feat(alerting): ClickUp alerting provider (#1462)

* feat(alerting): Add ClickUp alerting provider

* test: added ClickUp tests, docs in README and switch http to github.com/TwiN/gatus/v5/client from http.Client

* docs: Update ClickUp API token instructions in README

* fix(alerting): Update ClickUp alert configuration and default values

* docs: fixed formatting and removed line breaks from content in README

* feat(alerting): Add group-specific overrides and validation checks, updated README

* Update alerting/provider/clickup/clickup.go

Co-authored-by: PythonGermany <97847597+PythonGermany@users.noreply.github.com>

* fix(alerting): add priority validation

* fix(alerting): set default priority to 3

* feat(alerting): add priority map for ClickUp provider

* feat(alerting): make notify-all configurable for ClickUp provider

* docs: add instructions for finding Assignee IDs for ClickUp

* refactor(alerting): simplified ClickUp configurations example

* refactor(alerting): clean up new lines  in ClickUp provider

---------

Co-authored-by: PythonGermany <97847597+PythonGermany@users.noreply.github.com>

.examples/docker-compose-grafana-prometheus/compose.yaml

@@ -1,4 +1,3 @@
-version: "3.9"
 services:
   gatus:
     container_name: gatus
@@ -13,7 +12,7 @@ services:
 
   prometheus:
     container_name: prometheus
-    image: prom/prometheus:v2.14.0
+    image: prom/prometheus:v3.5.0
     restart: always
     command: --config.file=/etc/prometheus/prometheus.yml
     ports:
@@ -25,7 +24,7 @@ services:
 
   grafana:
     container_name: grafana
-    image: grafana/grafana:6.4.4
+    image: grafana/grafana:12.1.0
     restart: always
     environment:
       GF_SECURITY_ADMIN_PASSWORD: secret

.examples/docker-compose-grafana-prometheus/config/config.yaml

@@ -16,4 +16,10 @@ endpoints:
     url: https://api.github.com/healthz
     interval: 5m
     conditions:
-      - "[STATUS] == 200"
+      - "[STATUS] == 200"
+
+  - name: check-domain-expiration
+    url: "https://example.org/"
+    interval: 1h
+    conditions:
+      - "[DOMAIN_EXPIRATION] > 720h"

.examples/docker-compose-grafana-prometheus/grafana/provisioning/dashboards/gatus.json

@@ -19,7 +19,7 @@
   "editable": true,
   "fiscalYearStartMonth": 0,
   "graphTooltip": 0,
-  "id": 566,
+  "id": 41,
   "links": [],
   "panels": [
     {
@@ -39,7 +39,8 @@
             "mode": "absolute",
             "steps": [
               {
-                "color": "green"
+                "color": "green",
+                "value": 0
               },
               {
                 "color": "yellow",
@@ -79,7 +80,7 @@
         "textMode": "auto",
         "wideLayout": true
       },
-      "pluginVersion": "12.0.2",
+      "pluginVersion": "12.1.0",
       "targets": [
         {
           "datasource": {
@@ -122,7 +123,8 @@
             "mode": "absolute",
             "steps": [
               {
-                "color": "red"
+                "color": "red",
+                "value": 0
               },
               {
                 "color": "yellow",
@@ -162,7 +164,7 @@
         "textMode": "auto",
         "wideLayout": true
       },
-      "pluginVersion": "12.0.2",
+      "pluginVersion": "12.1.0",
       "targets": [
         {
           "datasource": {
@@ -193,7 +195,8 @@
             "mode": "absolute",
             "steps": [
               {
-                "color": "green"
+                "color": "green",
+                "value": 0
               }
             ]
           },
@@ -225,7 +228,7 @@
         "textMode": "auto",
         "wideLayout": true
       },
-      "pluginVersion": "12.0.2",
+      "pluginVersion": "12.1.0",
       "targets": [
         {
           "datasource": {
@@ -292,7 +295,7 @@
           "sort": "none"
         }
       },
-      "pluginVersion": "12.0.2",
+      "pluginVersion": "12.1.0",
       "targets": [
         {
           "datasource": {
@@ -321,7 +324,7 @@
         "type": "prometheus",
         "uid": "$datasource"
       },
-      "description": "SSL certificate expiration times for all services",
+      "description": "Domain expiration times for all domains",
       "fieldConfig": {
         "defaults": {
           "color": {
@@ -339,7 +342,8 @@
             "mode": "absolute",
             "steps": [
               {
-                "color": "red"
+                "color": "red",
+                "value": 0
               },
               {
                 "color": "#EAB839",
@@ -395,7 +399,137 @@
         "showHeader": true,
         "sortBy": []
       },
-      "pluginVersion": "12.0.2",
+      "pluginVersion": "12.1.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "$datasource"
+          },
+          "editorMode": "code",
+          "expr": "gatus_results_domain_expiration_seconds",
+          "format": "table",
+          "instant": true,
+          "legendFormat": "__auto",
+          "refId": "A"
+        }
+      ],
+      "title": "Domain Expiration",
+      "transformations": [
+        {
+          "id": "organize",
+          "options": {
+            "excludeByName": {
+              "Time": true,
+              "Value": false,
+              "__name__": true,
+              "app_kubernetes_io_instance": true,
+              "app_kubernetes_io_managed_by": true,
+              "app_kubernetes_io_name": true,
+              "app_kubernetes_io_service": true,
+              "helm_sh_chart": true,
+              "instance": true,
+              "job": true,
+              "key": true,
+              "type": true
+            },
+            "includeByName": {},
+            "indexByName": {
+              "Value": 2,
+              "group": 0,
+              "name": 1
+            },
+            "renameByName": {
+              "Value": "Time Until Expiry",
+              "group": "Group",
+              "name": "Service"
+            }
+          }
+        }
+      ],
+      "type": "table"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "$datasource"
+      },
+      "description": "SSL certificate expiration times for all services",
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "thresholds"
+          },
+          "custom": {
+            "align": "auto",
+            "cellOptions": {
+              "type": "auto"
+            },
+            "inspect": false
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "red",
+                "value": 0
+              },
+              {
+                "color": "#EAB839",
+                "value": 172800
+              },
+              {
+                "color": "green",
+                "value": 604800
+              }
+            ]
+          },
+          "unit": "dtdurations"
+        },
+        "overrides": [
+          {
+            "matcher": {
+              "id": "byName",
+              "options": "Time Until Expiry"
+            },
+            "properties": [
+              {
+                "id": "custom.cellOptions",
+                "value": {
+                  "applyToRow": false,
+                  "type": "color-background"
+                }
+              },
+              {
+                "id": "unit",
+                "value": "s"
+              }
+            ]
+          }
+        ]
+      },
+      "gridPos": {
+        "h": 8,
+        "w": 12,
+        "x": 12,
+        "y": 8
+      },
+      "id": 11,
+      "options": {
+        "cellHeight": "sm",
+        "footer": {
+          "countRows": false,
+          "fields": "",
+          "reducer": [
+            "sum"
+          ],
+          "show": false
+        },
+        "showHeader": true,
+        "sortBy": []
+      },
+      "pluginVersion": "12.1.0",
       "targets": [
         {
           "datasource": {
@@ -444,6 +578,113 @@
       ],
       "type": "table"
     },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "$datasource"
+      },
+      "description": "Current status distribution across all services",
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "palette-classic"
+          },
+          "custom": {
+            "axisBorderShow": false,
+            "axisCenteredZero": false,
+            "axisColorMode": "text",
+            "axisLabel": "",
+            "axisPlacement": "auto",
+            "barAlignment": 0,
+            "barWidthFactor": 0.6,
+            "drawStyle": "line",
+            "fillOpacity": 10,
+            "gradientMode": "none",
+            "hideFrom": {
+              "legend": false,
+              "tooltip": false,
+              "vis": false,
+              "viz": false
+            },
+            "insertNulls": false,
+            "lineInterpolation": "linear",
+            "lineWidth": 1,
+            "pointSize": 5,
+            "scaleDistribution": {
+              "type": "linear"
+            },
+            "showPoints": "never",
+            "spanNulls": false,
+            "stacking": {
+              "group": "A",
+              "mode": "none"
+            },
+            "thresholdsStyle": {
+              "mode": "off"
+            }
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": 0
+              },
+              {
+                "color": "red",
+                "value": 80
+              }
+            ]
+          },
+          "unit": "short"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 8,
+        "w": 12,
+        "x": 0,
+        "y": 16
+      },
+      "id": 5,
+      "options": {
+        "legend": {
+          "calcs": [],
+          "displayMode": "list",
+          "placement": "bottom",
+          "showLegend": true
+        },
+        "tooltip": {
+          "hideZeros": false,
+          "mode": "single",
+          "sort": "none"
+        }
+      },
+      "pluginVersion": "12.1.0",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "$datasource"
+          },
+          "expr": "sum(gatus_results_endpoint_success)",
+          "legendFormat": "Services UP",
+          "refId": "A"
+        },
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "$datasource"
+          },
+          "expr": "sum(1 - gatus_results_endpoint_success)",
+          "legendFormat": "Services DOWN",
+          "refId": "B"
+        }
+      ],
+      "title": "Service Status Distribution",
+      "type": "timeseries"
+    },
     {
       "datasource": {
         "type": "prometheus",
@@ -483,7 +724,8 @@
             "mode": "absolute",
             "steps": [
               {
-                "color": "red"
+                "color": "red",
+                "value": 0
               },
               {
                 "color": "green",
@@ -525,7 +767,7 @@
         "h": 8,
         "w": 12,
         "x": 12,
-        "y": 8
+        "y": 16
       },
       "id": 2,
       "options": {
@@ -546,7 +788,7 @@
           }
         ]
       },
-      "pluginVersion": "12.0.2",
+      "pluginVersion": "12.1.0",
       "targets": [
         {
           "datasource": {
@@ -689,7 +931,8 @@
             "mode": "absolute",
             "steps": [
               {
-                "color": "green"
+                "color": "green",
+                "value": 0
               },
               {
                 "color": "red",
@@ -703,9 +946,9 @@
       },
       "gridPos": {
         "h": 8,
-        "w": 12,
+        "w": 24,
         "x": 0,
-        "y": 16
+        "y": 24
       },
       "id": 4,
       "options": {
@@ -721,7 +964,7 @@
           "sort": "none"
         }
       },
-      "pluginVersion": "12.0.2",
+      "pluginVersion": "12.1.0",
       "targets": [
         {
           "datasource": {
@@ -735,112 +978,6 @@
       ],
       "title": "Response Times",
       "type": "timeseries"
-    },
-    {
-      "datasource": {
-        "type": "prometheus",
-        "uid": "$datasource"
-      },
-      "description": "Current status distribution across all services",
-      "fieldConfig": {
-        "defaults": {
-          "color": {
-            "mode": "palette-classic"
-          },
-          "custom": {
-            "axisBorderShow": false,
-            "axisCenteredZero": false,
-            "axisColorMode": "text",
-            "axisLabel": "",
-            "axisPlacement": "auto",
-            "barAlignment": 0,
-            "barWidthFactor": 0.6,
-            "drawStyle": "line",
-            "fillOpacity": 10,
-            "gradientMode": "none",
-            "hideFrom": {
-              "legend": false,
-              "tooltip": false,
-              "vis": false,
-              "viz": false
-            },
-            "insertNulls": false,
-            "lineInterpolation": "linear",
-            "lineWidth": 1,
-            "pointSize": 5,
-            "scaleDistribution": {
-              "type": "linear"
-            },
-            "showPoints": "never",
-            "spanNulls": false,
-            "stacking": {
-              "group": "A",
-              "mode": "none"
-            },
-            "thresholdsStyle": {
-              "mode": "off"
-            }
-          },
-          "mappings": [],
-          "thresholds": {
-            "mode": "absolute",
-            "steps": [
-              {
-                "color": "green"
-              },
-              {
-                "color": "red",
-                "value": 80
-              }
-            ]
-          },
-          "unit": "short"
-        },
-        "overrides": []
-      },
-      "gridPos": {
-        "h": 8,
-        "w": 12,
-        "x": 12,
-        "y": 16
-      },
-      "id": 5,
-      "options": {
-        "legend": {
-          "calcs": [],
-          "displayMode": "list",
-          "placement": "bottom",
-          "showLegend": true
-        },
-        "tooltip": {
-          "hideZeros": false,
-          "mode": "single",
-          "sort": "none"
-        }
-      },
-      "pluginVersion": "12.0.2",
-      "targets": [
-        {
-          "datasource": {
-            "type": "prometheus",
-            "uid": "$datasource"
-          },
-          "expr": "sum(gatus_results_endpoint_success)",
-          "legendFormat": "Services UP",
-          "refId": "A"
-        },
-        {
-          "datasource": {
-            "type": "prometheus",
-            "uid": "$datasource"
-          },
-          "expr": "sum(1 - gatus_results_endpoint_success)",
-          "legendFormat": "Services DOWN",
-          "refId": "B"
-        }
-      ],
-      "title": "Service Status Distribution",
-      "type": "timeseries"
     }
   ],
   "preload": false,
@@ -855,8 +992,8 @@
     "list": [
       {
         "current": {
-          "text": "myprom",
-          "value": "PA04845DA3A4B088E"
+          "text": "prometheus",
+          "value": "cedv077q7bbwgd"
         },
         "description": "Select your Prometheus datasource",
         "includeAll": false,
@@ -877,6 +1014,6 @@
   "timepicker": {},
   "timezone": "",
   "title": "Gatus - Service Monitoring Dashboard",
-  "uid": "gatus-monitoring2",
-  "version": 10
-}
+  "uid": "4ea25b6f-2edc-416c-8282-a1164f95537a",
+  "version": 1
+}

.examples/docker-compose-mattermost/compose.yaml

@@ -1,4 +1,3 @@
-version: "3.9"
 services:
   gatus:
     container_name: gatus

.examples/docker-compose-mtls/compose.yaml

@@ -1,4 +1,3 @@
-version: "3.9"
 services:
   nginx:
     image: nginx:stable

.examples/docker-compose-multiple-config-files/compose.yaml

@@ -1,4 +1,3 @@
-version: "3.8"
 services:
   gatus:
     image: twinproduction/gatus:latest

.examples/docker-compose-postgres-storage/compose.yaml

@@ -1,4 +1,3 @@
-version: "3.9"
 services:
   postgres:
     image: postgres

.examples/docker-compose-sqlite-storage/compose.yaml

@@ -1,4 +1,3 @@
-version: "3.9"
 services:
   gatus:
     image: twinproduction/gatus:latest

.examples/docker-compose/compose.yaml

@@ -1,4 +1,3 @@
-version: "3.8"
 services:
   gatus:
     image: twinproduction/gatus:latest

.github/assets/logo.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 89.76 89.75"><defs><style>.cls-1{fill:#3cad4b;}.cls-2{fill:#017400;}.cls-3{fill:#1e9025;}</style></defs><g id="Layer_2" data-name="Layer 2"><g id="Layer_1-2" data-name="Layer 1"><path class="cls-1" d="M33.67,65.35a23.35,23.35,0,0,1,.08-41,22.94,22.94,0,0,1,3.8-1.64A23,23,0,0,0,53.6,1C53,0,51,0,44.89,0c-9.08,0-9.21.17-8.81,3.22,1.07,8.12-9.42,12.5-14.45,6-1.94-2.52-2.1-2.52-8.68,4.16-6.22,6.3-6.33,6.28-3.77,8.25a8.09,8.09,0,0,1,2.56,9.53A8.15,8.15,0,0,1,3.08,36C0,35.63,0,35.73,0,45.2.08,53.81,0,54,3.3,53.63A8.06,8.06,0,0,1,9.76,67.52c-3,2.83-2.84,2.61,2.84,8.48,5.43,5.62,6.33,6.73,8.16,5.24L34,68A1.63,1.63,0,0,0,33.67,65.35Z"/><path class="cls-2" d="M85.43,36.13a8.11,8.11,0,0,1-5.27-14.21c2.85-2.5,2.82-2.37-3.55-8.75-4.31-4.31-5.71-5.75-6.87-5.4l-14,14a1.65,1.65,0,0,0,.36,2.61,23.35,23.35,0,0,1-.1,41,24.5,24.5,0,0,1-5.11,2c-8.54,2.28-14.73,9.63-14.73,18.47v1.27c.15,2.54,1.19,2.42,8.06,2.52,9.32.14,9.1.35,9.38-4.66a8.11,8.11,0,0,1,14-5.09c3,3.15,2.39,3.11,8.73-3.14,6.56-6.47,6.86-6.25,3.68-9.14a8.1,8.1,0,0,1,6.06-14.07c3.68.27,3.51.06,3.63-8.09C89.85,36.27,90,36.16,85.43,36.13Z"/><path class="cls-3" d="M41.11,59h8a.76.76,0,0,0,.77-.76V50.43a.76.76,0,0,1,.77-.76h7.84a.78.78,0,0,0,.77-.77V40.84a.77.77,0,0,0-.77-.76H50.7a.76.76,0,0,1-.77-.77V31.47a.76.76,0,0,0-.77-.77h-8a.76.76,0,0,0-.77.77v7.84a.76.76,0,0,1-.77.77H31.73a.77.77,0,0,0-.77.76V48.9a.78.78,0,0,0,.77.77h7.84a.76.76,0,0,1,.77.76v7.85A.76.76,0,0,0,41.11,59Z"/></g></g></svg>

.github/codecov.yml

@@ -1,6 +1,9 @@
 ignore:
-  - "watchdog/watchdog.go"
   - "storage/store/sql/specific_postgres.go" # Can't test for postgres
+  - "watchdog/endpoint.go"
+  - "watchdog/external_endpoint.go"
+  - "watchdog/suite.go"
+  - "watchdog/watchdog.go"
 comment: false
 coverage:
   status:

.github/workflows/benchmark.yml

@@ -20,11 +20,11 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 15
     steps:
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v6
         with:
-          go-version: 1.24.1
+          go-version: 1.24.4
           repository: "${{ github.event.inputs.repository || 'TwiN/gatus' }}"
           ref: "${{ github.event.inputs.ref || 'master' }}"
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Benchmark
         run: go test -bench=. ./storage/store

.github/workflows/labeler.yml

@@ -32,6 +32,9 @@ jobs:
           if [[ $TITLE == *"alerting"* || $TITLE == *"provider"* || $TITLE == *"alert"* ]]; then
             gh issue edit "$NUMBER" --add-label "area/alerting"
           fi
+          if [[ $TITLE == *"(ui)"* || $TITLE == *"ui:"* ]]; then
+            gh issue edit "$NUMBER" --add-label "area/ui"
+          fi
           if [[ $TITLE == *"storage"* || $TITLE == *"postgres"* || $TITLE == *"sqlite"* ]]; then
             gh issue edit "$NUMBER" --add-label "area/storage"
           fi

.github/workflows/publish-custom.yml

@@ -5,12 +5,21 @@ on:
     inputs:
       tag:
         description: Custom tag to publish
+      platforms:
+        description: Platforms to publish to (comma separated list)
+        default: linux/amd64
+        type: choice
+        options:
+          - linux/amd64
+          - linux/arm/v7
+          - linux/arm64
+
 jobs:
   publish-custom:
     runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx
@@ -33,7 +42,7 @@ jobs:
       - name: Build and push Docker image
         uses: docker/build-push-action@v6
         with:
-          platforms: linux/amd64
+          platforms: ${{ inputs.platforms }}
           pull: true
           push: true
           tags: ${{ steps.meta.outputs.tags }}

.github/workflows/publish-experimental.yml

@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx

.github/workflows/publish-latest.yml

@@ -13,7 +13,7 @@ jobs:
     if: ${{ (github.event.workflow_run.conclusion == 'success') && (github.event.workflow_run.head_repository.full_name == github.repository) }}
     timeout-minutes: 240
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx

.github/workflows/publish-release.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 240
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx

.github/workflows/regenerate-static-assets.yml

@@ -0,0 +1,107 @@
+name: regenerate-static-assets
+on:
+  issue_comment:
+    types: [created]
+
+jobs:
+  check-command:
+    runs-on: ubuntu-latest
+    if: ${{ github.event.issue.pull_request }}
+    permissions:
+      pull-requests: write # required for adding reactions to command comments on PRs
+      checks: read # required to check if all ci checks have passed
+    outputs:
+      continue: ${{ steps.command.outputs.continue }}
+    steps:
+      - name: Check command trigger
+        id: command
+        uses: github/command@v2
+        with:
+          command: "/regenerate-static-assets"
+          permissions: "write,admin" # The allowed permission levels to invoke this command
+          allow_forks: true
+          allow_drafts: true
+          skip_ci: true
+          skip_completing: true
+
+  regenerate-static-assets:
+    runs-on: ubuntu-latest
+    needs: check-command
+    if: ${{ needs.check-command.outputs.continue == 'true' }}
+    permissions:
+      contents: write
+    outputs:
+      status: ${{ steps.commit.outputs.status }}
+    steps:
+      - name: Get PR branch
+        id: pr
+        uses: actions/github-script@v8
+        with:
+          script: |
+            const pr = await github.rest.pulls.get({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              pull_number: context.issue.number
+            });
+            core.setOutput('ref', pr.data.head.ref);
+            core.setOutput('repo', pr.data.head.repo.full_name);
+      - name: Checkout PR branch
+        uses: actions/checkout@v6
+        with:
+          repository: ${{ steps.pr.outputs.repo }}
+          ref: ${{ steps.pr.outputs.ref }}
+      - name: Regenerate static assets
+        run: |
+          make frontend-install-dependencies
+          make frontend-build
+      - name: Commit and push changes
+        id: commit
+        run: |
+          echo "Checking for changes..."
+          if git diff --quiet; then
+            echo "No changes detected."
+            echo "status=no_changes" >> $GITHUB_OUTPUT
+            exit 0
+          fi
+          git config --global user.name "github-actions[bot]"
+          git config --global user.email "github-actions[bot]@users.noreply.github.com"
+          echo "Changes detected. Committing and pushing..."
+          git add . 
+          git commit -m "chore(ui): Regenerate static assets"
+          git push origin ${{ steps.pr.outputs.ref }}
+          echo "status=success" >> $GITHUB_OUTPUT
+
+  create-response-comment:
+    runs-on: ubuntu-latest
+    needs: [check-command, regenerate-static-assets]
+    if: ${{ !cancelled() && needs.check-command.outputs.continue == 'true' }}
+    permissions:
+      pull-requests: write
+    steps:
+      - name: Create response comment
+        uses: actions/github-script@v8
+        with:
+          script: |
+            const status = '${{ needs.regenerate-static-assets.outputs.status }}';
+            let reaction = '';
+            if (status === 'success') {
+              reaction = 'hooray';
+            } else if (status === 'no_changes') {
+              reaction = '+1';
+            } else {
+              reaction = '-1';
+              var workflowUrl = `${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}`;
+              var body = '⚠️ There was an issue regenerating static assets. Please check the [workflow run logs](' + workflowUrl + ') for more details.';
+              await github.rest.issues.createComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: context.issue.number,
+                body: body
+              });
+            }
+            await github.rest.reactions.createForIssueComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              comment_id: context.payload.comment.id,
+              content: reaction
+            });

.github/workflows/test-ui.yml

@@ -13,6 +13,6 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - run: make frontend-install-dependencies
       - run: make frontend-build

.github/workflows/test.yml

@@ -16,10 +16,10 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v6
         with:
-          go-version: 1.24.1
-      - uses: actions/checkout@v4
+          go-version: 1.24.4
+      - uses: actions/checkout@v5
       - name: Build binary to make sure it works
         run: go build
       - name: Test
@@ -28,7 +28,7 @@ jobs:
         # was configured by the "Set up Go" step (otherwise, it'd use sudo's "go" executable)
         run: sudo env "PATH=$PATH" "GOROOT=$GOROOT" go test ./... -race -coverprofile=coverage.txt -covermode=atomic
       - name: Codecov
-        uses: codecov/codecov-action@v5.4.3
+        uses: codecov/codecov-action@v5.5.2
         with:
           files: ./coverage.txt
           token: ${{ secrets.CODECOV_TOKEN }}

Dockerfile

@@ -3,7 +3,7 @@ FROM golang:alpine AS builder
 RUN apk --update add ca-certificates
 WORKDIR /app
 COPY . ./
-RUN go mod tidy
+RUN go mod tidy -diff
 RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o gatus .
 
 # Run Tests inside docker image if you don't have a configured go environment

alerting/alert/alert.go

@@ -15,6 +15,8 @@ import (
 var (
 	// ErrAlertWithInvalidDescription is the error with which Gatus will panic if an alert has an invalid character
 	ErrAlertWithInvalidDescription = errors.New("alert description must not have \" or \\")
+
+	ErrAlertWithInvalidMinimumReminderInterval = errors.New("minimum-reminder-interval must be either omitted or be at least 5m")
 )
 
 // Alert is endpoint.Endpoint's alert configuration
@@ -78,6 +80,9 @@ func (alert *Alert) ValidateAndSetDefaults() error {
 	if alert.SuccessThreshold <= 0 {
 		alert.SuccessThreshold = 2
 	}
+	if alert.MinimumReminderInterval != 0 && alert.MinimumReminderInterval < 5*time.Minute {
+		return ErrAlertWithInvalidMinimumReminderInterval
+	}
 	if strings.ContainsAny(alert.GetDescription(), "\"\\") {
 		return ErrAlertWithInvalidDescription
 	}

alerting/alert/alert_test.go

@@ -3,6 +3,7 @@ package alert
 import (
 	"errors"
 	"testing"
+	"time"
 )
 
 func TestAlert_ValidateAndSetDefaults(t *testing.T) {
@@ -36,6 +37,61 @@ func TestAlert_ValidateAndSetDefaults(t *testing.T) {
 			expectedFailureThreshold: 10,
 			expectedSuccessThreshold: 5,
 		},
+		{
+			name: "valid-minimum-reminder-interval-0",
+			alert: Alert{
+				MinimumReminderInterval: 0,
+				FailureThreshold:        10,
+				SuccessThreshold:        5,
+			},
+			expectedError:            nil,
+			expectedFailureThreshold: 10,
+			expectedSuccessThreshold: 5,
+		},
+		{
+			name: "valid-minimum-reminder-interval-5m",
+			alert: Alert{
+				MinimumReminderInterval: 5 * time.Minute,
+				FailureThreshold:        10,
+				SuccessThreshold:        5,
+			},
+			expectedError:            nil,
+			expectedFailureThreshold: 10,
+			expectedSuccessThreshold: 5,
+		},
+		{
+			name: "valid-minimum-reminder-interval-10m",
+			alert: Alert{
+				MinimumReminderInterval: 10 * time.Minute,
+				FailureThreshold:        10,
+				SuccessThreshold:        5,
+			},
+			expectedError:            nil,
+			expectedFailureThreshold: 10,
+			expectedSuccessThreshold: 5,
+		},
+		{
+			name: "invalid-minimum-reminder-interval-1m",
+			alert: Alert{
+				MinimumReminderInterval: 1 * time.Minute,
+				FailureThreshold:        10,
+				SuccessThreshold:        5,
+			},
+			expectedError:            ErrAlertWithInvalidMinimumReminderInterval,
+			expectedFailureThreshold: 10,
+			expectedSuccessThreshold: 5,
+		},
+		{
+			name: "invalid-minimum-reminder-interval-1s",
+			alert: Alert{
+				MinimumReminderInterval: 1 * time.Second,
+				FailureThreshold:        10,
+				SuccessThreshold:        5,
+			},
+			expectedError:            ErrAlertWithInvalidMinimumReminderInterval,
+			expectedFailureThreshold: 10,
+			expectedSuccessThreshold: 5,
+		},
 	}
 	for _, scenario := range scenarios {
 		t.Run(scenario.name, func(t *testing.T) {

alerting/alert/type.go

@@ -8,9 +8,15 @@ const (
 	// TypeAWSSES is the Type for the awsses alerting provider
 	TypeAWSSES Type = "aws-ses"
 
+	// TypeClickUp is the Type for the clickup alerting provider
+	TypeClickUp Type = "clickup"
+
 	// TypeCustom is the Type for the custom alerting provider
 	TypeCustom Type = "custom"
 
+	// TypeDatadog is the Type for the datadog alerting provider
+	TypeDatadog Type = "datadog"
+
 	// TypeDiscord is the Type for the discord alerting provider
 	TypeDiscord Type = "discord"
 
@@ -32,17 +38,20 @@ const (
 	// TypeGotify is the Type for the gotify alerting provider
 	TypeGotify Type = "gotify"
 
-  // TypeHomeAssistant is the Type for the homeassistant alerting provider
+	// TypeHomeAssistant is the Type for the homeassistant alerting provider
 	TypeHomeAssistant Type = "homeassistant"
-  
+
+	// TypeIFTTT is the Type for the ifttt alerting provider
+	TypeIFTTT Type = "ifttt"
+
 	// TypeIlert is the Type for the ilert alerting provider
 	TypeIlert Type = "ilert"
 
 	// TypeIncidentIO is the Type for the incident-io alerting provider
 	TypeIncidentIO Type = "incident-io"
 
-	// TypeJetBrainsSpace is the Type for the jetbrains alerting provider
-	TypeJetBrainsSpace Type = "jetbrainsspace"
+	// TypeLine is the Type for the line alerting provider
+	TypeLine Type = "line"
 
 	// TypeMatrix is the Type for the matrix alerting provider
 	TypeMatrix Type = "matrix"
@@ -53,6 +62,12 @@ const (
 	// TypeMessagebird is the Type for the messagebird alerting provider
 	TypeMessagebird Type = "messagebird"
 
+	// TypeNewRelic is the Type for the newrelic alerting provider
+	TypeNewRelic Type = "newrelic"
+
+	// TypeN8N is the Type for the n8n alerting provider
+	TypeN8N Type = "n8n"
+
 	// TypeNtfy is the Type for the ntfy alerting provider
 	TypeNtfy Type = "ntfy"
 
@@ -62,12 +77,33 @@ const (
 	// TypePagerDuty is the Type for the pagerduty alerting provider
 	TypePagerDuty Type = "pagerduty"
 
+	// TypePlivo is the Type for the plivo alerting provider
+	TypePlivo Type = "plivo"
+
 	// TypePushover is the Type for the pushover alerting provider
 	TypePushover Type = "pushover"
 
+	// TypeRocketChat is the Type for the rocketchat alerting provider
+	TypeRocketChat Type = "rocketchat"
+
+	// TypeSendGrid is the Type for the sendgrid alerting provider
+	TypeSendGrid Type = "sendgrid"
+
+	// TypeSignal is the Type for the signal alerting provider
+	TypeSignal Type = "signal"
+
+	// TypeSIGNL4 is the Type for the signl4 alerting provider
+	TypeSIGNL4 Type = "signl4"
+
 	// TypeSlack is the Type for the slack alerting provider
 	TypeSlack Type = "slack"
 
+	// TypeSplunk is the Type for the splunk alerting provider
+	TypeSplunk Type = "splunk"
+
+	// TypeSquadcast is the Type for the squadcast alerting provider
+	TypeSquadcast Type = "squadcast"
+
 	// TypeTeams is the Type for the teams alerting provider
 	TypeTeams Type = "teams"
 
@@ -80,6 +116,15 @@ const (
 	// TypeTwilio is the Type for the twilio alerting provider
 	TypeTwilio Type = "twilio"
 
+	// TypeVonage is the Type for the vonage alerting provider
+	TypeVonage Type = "vonage"
+
+	// TypeWebex is the Type for the webex alerting provider
+	TypeWebex Type = "webex"
+
+	// TypeZapier is the Type for the zapier alerting provider
+	TypeZapier Type = "zapier"
+
 	// TypeZulip is the Type for the Zulip alerting provider
 	TypeZulip Type = "zulip"
 )

alerting/config.go

@@ -7,7 +7,9 @@ import (
 	"github.com/TwiN/gatus/v5/alerting/alert"
 	"github.com/TwiN/gatus/v5/alerting/provider"
 	"github.com/TwiN/gatus/v5/alerting/provider/awsses"
+	"github.com/TwiN/gatus/v5/alerting/provider/clickup"
 	"github.com/TwiN/gatus/v5/alerting/provider/custom"
+	"github.com/TwiN/gatus/v5/alerting/provider/datadog"
 	"github.com/TwiN/gatus/v5/alerting/provider/discord"
 	"github.com/TwiN/gatus/v5/alerting/provider/email"
 	"github.com/TwiN/gatus/v5/alerting/provider/gitea"
@@ -15,22 +17,35 @@ import (
 	"github.com/TwiN/gatus/v5/alerting/provider/gitlab"
 	"github.com/TwiN/gatus/v5/alerting/provider/googlechat"
 	"github.com/TwiN/gatus/v5/alerting/provider/gotify"
-  "github.com/TwiN/gatus/v5/alerting/provider/homeassistant"
-  "github.com/TwiN/gatus/v5/alerting/provider/ilert"
+	"github.com/TwiN/gatus/v5/alerting/provider/homeassistant"
+	"github.com/TwiN/gatus/v5/alerting/provider/ifttt"
+	"github.com/TwiN/gatus/v5/alerting/provider/ilert"
 	"github.com/TwiN/gatus/v5/alerting/provider/incidentio"
-	"github.com/TwiN/gatus/v5/alerting/provider/jetbrainsspace"
+	"github.com/TwiN/gatus/v5/alerting/provider/line"
 	"github.com/TwiN/gatus/v5/alerting/provider/matrix"
 	"github.com/TwiN/gatus/v5/alerting/provider/mattermost"
 	"github.com/TwiN/gatus/v5/alerting/provider/messagebird"
+	"github.com/TwiN/gatus/v5/alerting/provider/n8n"
+	"github.com/TwiN/gatus/v5/alerting/provider/newrelic"
 	"github.com/TwiN/gatus/v5/alerting/provider/ntfy"
 	"github.com/TwiN/gatus/v5/alerting/provider/opsgenie"
 	"github.com/TwiN/gatus/v5/alerting/provider/pagerduty"
+	"github.com/TwiN/gatus/v5/alerting/provider/plivo"
 	"github.com/TwiN/gatus/v5/alerting/provider/pushover"
+	"github.com/TwiN/gatus/v5/alerting/provider/rocketchat"
+	"github.com/TwiN/gatus/v5/alerting/provider/sendgrid"
+	"github.com/TwiN/gatus/v5/alerting/provider/signal"
+	"github.com/TwiN/gatus/v5/alerting/provider/signl4"
 	"github.com/TwiN/gatus/v5/alerting/provider/slack"
+	"github.com/TwiN/gatus/v5/alerting/provider/splunk"
+	"github.com/TwiN/gatus/v5/alerting/provider/squadcast"
 	"github.com/TwiN/gatus/v5/alerting/provider/teams"
 	"github.com/TwiN/gatus/v5/alerting/provider/teamsworkflows"
 	"github.com/TwiN/gatus/v5/alerting/provider/telegram"
 	"github.com/TwiN/gatus/v5/alerting/provider/twilio"
+	"github.com/TwiN/gatus/v5/alerting/provider/vonage"
+	"github.com/TwiN/gatus/v5/alerting/provider/webex"
+	"github.com/TwiN/gatus/v5/alerting/provider/zapier"
 	"github.com/TwiN/gatus/v5/alerting/provider/zulip"
 	"github.com/TwiN/logr"
 )
@@ -40,9 +55,15 @@ type Config struct {
 	// AWSSimpleEmailService is the configuration for the aws-ses alerting provider
 	AWSSimpleEmailService *awsses.AlertProvider `yaml:"aws-ses,omitempty"`
 
+	// ClickUp is the configuration for the clickup alerting provider
+	ClickUp *clickup.AlertProvider `yaml:"clickup,omitempty"`
+
 	// Custom is the configuration for the custom alerting provider
 	Custom *custom.AlertProvider `yaml:"custom,omitempty"`
 
+	// Datadog is the configuration for the datadog alerting provider
+	Datadog *datadog.AlertProvider `yaml:"datadog,omitempty"`
+
 	// Discord is the configuration for the discord alerting provider
 	Discord *discord.AlertProvider `yaml:"discord,omitempty"`
 
@@ -63,18 +84,21 @@ type Config struct {
 
 	// Gotify is the configuration for the gotify alerting provider
 	Gotify *gotify.AlertProvider `yaml:"gotify,omitempty"`
-  
+
 	// HomeAssistant is the configuration for the homeassistant alerting provider
 	HomeAssistant *homeassistant.AlertProvider `yaml:"homeassistant,omitempty"`
-  
+
+	// IFTTT is the configuration for the ifttt alerting provider
+	IFTTT *ifttt.AlertProvider `yaml:"ifttt,omitempty"`
+
 	// Ilert is the configuration for the ilert alerting provider
 	Ilert *ilert.AlertProvider `yaml:"ilert,omitempty"`
 
 	// IncidentIO is the configuration for the incident-io alerting provider
 	IncidentIO *incidentio.AlertProvider `yaml:"incident-io,omitempty"`
 
-	// JetBrainsSpace is the configuration for the jetbrains space alerting provider
-	JetBrainsSpace *jetbrainsspace.AlertProvider `yaml:"jetbrainsspace,omitempty"`
+	// Line is the configuration for the line alerting provider
+	Line *line.AlertProvider `yaml:"line,omitempty"`
 
 	// Matrix is the configuration for the matrix alerting provider
 	Matrix *matrix.AlertProvider `yaml:"matrix,omitempty"`
@@ -85,6 +109,12 @@ type Config struct {
 	// Messagebird is the configuration for the messagebird alerting provider
 	Messagebird *messagebird.AlertProvider `yaml:"messagebird,omitempty"`
 
+	// NewRelic is the configuration for the newrelic alerting provider
+	NewRelic *newrelic.AlertProvider `yaml:"newrelic,omitempty"`
+
+	// N8N is the configuration for the n8n alerting provider
+	N8N *n8n.AlertProvider `yaml:"n8n,omitempty"`
+
 	// Ntfy is the configuration for the ntfy alerting provider
 	Ntfy *ntfy.AlertProvider `yaml:"ntfy,omitempty"`
 
@@ -94,12 +124,33 @@ type Config struct {
 	// PagerDuty is the configuration for the pagerduty alerting provider
 	PagerDuty *pagerduty.AlertProvider `yaml:"pagerduty,omitempty"`
 
+	// Plivo is the configuration for the plivo alerting provider
+	Plivo *plivo.AlertProvider `yaml:"plivo,omitempty"`
+
 	// Pushover is the configuration for the pushover alerting provider
 	Pushover *pushover.AlertProvider `yaml:"pushover,omitempty"`
 
+	// RocketChat is the configuration for the rocketchat alerting provider
+	RocketChat *rocketchat.AlertProvider `yaml:"rocketchat,omitempty"`
+
+	// SendGrid is the configuration for the sendgrid alerting provider
+	SendGrid *sendgrid.AlertProvider `yaml:"sendgrid,omitempty"`
+
+	// Signal is the configuration for the signal alerting provider
+	Signal *signal.AlertProvider `yaml:"signal,omitempty"`
+
+	// SIGNL4 is the configuration for the signl4 alerting provider
+	SIGNL4 *signl4.AlertProvider `yaml:"signl4,omitempty"`
+
 	// Slack is the configuration for the slack alerting provider
 	Slack *slack.AlertProvider `yaml:"slack,omitempty"`
 
+	// Splunk is the configuration for the splunk alerting provider
+	Splunk *splunk.AlertProvider `yaml:"splunk,omitempty"`
+
+	// Squadcast is the configuration for the squadcast alerting provider
+	Squadcast *squadcast.AlertProvider `yaml:"squadcast,omitempty"`
+
 	// Teams is the configuration for the teams alerting provider
 	Teams *teams.AlertProvider `yaml:"teams,omitempty"`
 
@@ -112,6 +163,15 @@ type Config struct {
 	// Twilio is the configuration for the twilio alerting provider
 	Twilio *twilio.AlertProvider `yaml:"twilio,omitempty"`
 
+	// Vonage is the configuration for the vonage alerting provider
+	Vonage *vonage.AlertProvider `yaml:"vonage,omitempty"`
+
+	// Webex is the configuration for the webex alerting provider
+	Webex *webex.AlertProvider `yaml:"webex,omitempty"`
+
+	// Zapier is the configuration for the zapier alerting provider
+	Zapier *zapier.AlertProvider `yaml:"zapier,omitempty"`
+
 	// Zulip is the configuration for the zulip alerting provider
 	Zulip *zulip.AlertProvider `yaml:"zulip,omitempty"`
 }

alerting/provider/awsses/awsses.go

@@ -1,18 +1,18 @@
 package awsses
 
 import (
+	"context"
 	"errors"
 	"fmt"
 	"strings"
 
 	"github.com/TwiN/gatus/v5/alerting/alert"
 	"github.com/TwiN/gatus/v5/config/endpoint"
-	"github.com/TwiN/logr"
-	"github.com/aws/aws-sdk-go/aws"
-	"github.com/aws/aws-sdk-go/aws/awserr"
-	"github.com/aws/aws-sdk-go/aws/credentials"
-	"github.com/aws/aws-sdk-go/aws/session"
-	"github.com/aws/aws-sdk-go/service/ses"
+	"github.com/aws/aws-sdk-go-v2/aws"
+	"github.com/aws/aws-sdk-go-v2/config"
+	"github.com/aws/aws-sdk-go-v2/credentials"
+	"github.com/aws/aws-sdk-go-v2/service/ses"
+	"github.com/aws/aws-sdk-go-v2/service/ses/types"
 	"gopkg.in/yaml.v3"
 )
 
@@ -102,63 +102,50 @@ func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, r
 	if err != nil {
 		return err
 	}
-	awsSession, err := provider.createSession(cfg)
+	ctx := context.Background()
+	svc, err := provider.createClient(ctx, cfg)
 	if err != nil {
 		return err
 	}
-	svc := ses.New(awsSession)
 	subject, body := provider.buildMessageSubjectAndBody(ep, alert, result, resolved)
 	emails := strings.Split(cfg.To, ",")
-
 	input := &ses.SendEmailInput{
-		Destination: &ses.Destination{
-			ToAddresses: aws.StringSlice(emails),
+		Destination: &types.Destination{
+			ToAddresses: emails,
 		},
-		Message: &ses.Message{
-			Body: &ses.Body{
-				Text: &ses.Content{
+		Message: &types.Message{
+			Body: &types.Body{
+				Text: &types.Content{
 					Charset: aws.String(CharSet),
 					Data:    aws.String(body),
 				},
 			},
-			Subject: &ses.Content{
+			Subject: &types.Content{
 				Charset: aws.String(CharSet),
 				Data:    aws.String(subject),
 			},
 		},
 		Source: aws.String(cfg.From),
 	}
-	if _, err = svc.SendEmail(input); err != nil {
-		if aerr, ok := err.(awserr.Error); ok {
-			switch aerr.Code() {
-			case ses.ErrCodeMessageRejected:
-				logr.Error(ses.ErrCodeMessageRejected + ": " + aerr.Error())
-			case ses.ErrCodeMailFromDomainNotVerifiedException:
-				logr.Error(ses.ErrCodeMailFromDomainNotVerifiedException + ": " + aerr.Error())
-			case ses.ErrCodeConfigurationSetDoesNotExistException:
-				logr.Error(ses.ErrCodeConfigurationSetDoesNotExistException + ": " + aerr.Error())
-			default:
-				logr.Error(aerr.Error())
-			}
-		} else {
-			// Print the error, cast err to awserr.Error to get the Code and
-			// Message from an error.
-			logr.Error(err.Error())
-		}
-
+	if _, err = svc.SendEmail(ctx, input); err != nil {
 		return err
 	}
 	return nil
 }
 
-func (provider *AlertProvider) createSession(cfg *Config) (*session.Session, error) {
-	awsConfig := &aws.Config{
-		Region: aws.String(cfg.Region),
+func (provider *AlertProvider) createClient(ctx context.Context, cfg *Config) (*ses.Client, error) {
+	var opts []func(*config.LoadOptions) error
+	if len(cfg.Region) > 0 {
+		opts = append(opts, config.WithRegion(cfg.Region))
 	}
 	if len(cfg.AccessKeyID) > 0 && len(cfg.SecretAccessKey) > 0 {
-		awsConfig.Credentials = credentials.NewStaticCredentials(cfg.AccessKeyID, cfg.SecretAccessKey, "")
+		opts = append(opts, config.WithCredentialsProvider(credentials.NewStaticCredentialsProvider(cfg.AccessKeyID, cfg.SecretAccessKey, "")))
 	}
-	return session.NewSession(awsConfig)
+	awsConfig, err := config.LoadDefaultConfig(ctx, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return ses.NewFromConfig(awsConfig), nil
 }
 
 // buildMessageSubjectAndBody builds the message subject and body

alerting/provider/clickup/clickup.go

@@ -0,0 +1,285 @@
+package clickup
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/http"
+	"strings"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"gopkg.in/yaml.v3"
+)
+
+var (
+	ErrListIDNotSet           = errors.New("list-id not set")
+	ErrTokenNotSet            = errors.New("token not set")
+	ErrDuplicateGroupOverride = errors.New("duplicate group override")
+	ErrInvalidPriority        = errors.New("priority must be one of: urgent, high, normal, low, none")
+)
+
+var priorityMap = map[string]int{
+	"urgent": 1,
+	"high":   2,
+	"normal": 3,
+	"low":    4,
+	"none":   0,
+}
+
+type Config struct {
+	APIURL          string   `yaml:"api-url"`
+	ListID          string   `yaml:"list-id"`
+	Token           string   `yaml:"token"`
+	Assignees       []string `yaml:"assignees"`
+	Status          string   `yaml:"status"`
+	Priority        string   `yaml:"priority"`
+	NotifyAll       *bool    `yaml:"notify-all,omitempty"`
+	Name            string   `yaml:"name,omitempty"`
+	MarkdownContent string   `yaml:"content,omitempty"`
+}
+
+func (cfg *Config) Validate() error {
+	if cfg.ListID == "" {
+		return ErrListIDNotSet
+	}
+	if cfg.Token == "" {
+		return ErrTokenNotSet
+	}
+	if cfg.Priority == "" {
+		cfg.Priority = "normal"
+	}
+	if _, ok := priorityMap[cfg.Priority]; !ok {
+		return ErrInvalidPriority
+	}
+	if cfg.NotifyAll == nil {
+		defaultNotifyAll := true
+		cfg.NotifyAll = &defaultNotifyAll
+	}
+	if cfg.APIURL == "" {
+		cfg.APIURL = "https://api.clickup.com/api/v2"
+	}
+	if cfg.Name == "" {
+		cfg.Name = "Health Check: [ENDPOINT_GROUP]:[ENDPOINT_NAME]"
+	}
+	if cfg.MarkdownContent == "" {
+		cfg.MarkdownContent = "Triggered: [ENDPOINT_GROUP] - [ENDPOINT_NAME] - [ALERT_DESCRIPTION] - [RESULT_ERRORS]"
+	}
+	return nil
+}
+
+func (cfg *Config) Merge(override *Config) {
+	if override.APIURL != "" {
+		cfg.APIURL = override.APIURL
+	}
+	if override.ListID != "" {
+		cfg.ListID = override.ListID
+	}
+	if override.Token != "" {
+		cfg.Token = override.Token
+	}
+	if override.Status != "" {
+		cfg.Status = override.Status
+	}
+	if override.Priority != "" {
+		cfg.Priority = override.Priority
+	}
+	if override.NotifyAll != nil {
+		cfg.NotifyAll = override.NotifyAll
+	}
+	if len(override.Assignees) > 0 {
+		cfg.Assignees = override.Assignees
+	}
+	if override.Name != "" {
+		cfg.Name = override.Name
+	}
+	if override.MarkdownContent != "" {
+		cfg.MarkdownContent = override.MarkdownContent
+	}
+}
+
+// AlertProvider is the configuration necessary for sending an alert using ClickUp
+type AlertProvider struct {
+	DefaultConfig Config `yaml:",inline"`
+
+	// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
+	DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
+
+	// Overrides is a list of Override that may be prioritized over the default configuration
+	Overrides []Override `yaml:"overrides,omitempty"`
+}
+
+// Override is a case under which the default configuration is overridden
+type Override struct {
+	Group  string `yaml:"group"`
+	Config `yaml:",inline"`
+}
+
+// Validate the provider's configuration
+func (provider *AlertProvider) Validate() error {
+	registeredGroups := make(map[string]bool)
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if isAlreadyRegistered := registeredGroups[override.Group]; isAlreadyRegistered || override.Group == "" {
+				return ErrDuplicateGroupOverride
+			}
+			registeredGroups[override.Group] = true
+		}
+	}
+	return provider.DefaultConfig.Validate()
+}
+
+func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) error {
+	cfg, err := provider.GetConfig(ep.Group, alert)
+	if err != nil {
+		return err
+	}
+	if resolved {
+		return provider.CloseTask(cfg, ep)
+	}
+	// Replace placeholders
+	name := strings.ReplaceAll(cfg.Name, "[ENDPOINT_GROUP]", ep.Group)
+	name = strings.ReplaceAll(name, "[ENDPOINT_NAME]", ep.Name)
+	markdownContent := strings.ReplaceAll(cfg.MarkdownContent, "[ENDPOINT_GROUP]", ep.Group)
+	markdownContent = strings.ReplaceAll(markdownContent, "[ENDPOINT_NAME]", ep.Name)
+	markdownContent = strings.ReplaceAll(markdownContent, "[ALERT_DESCRIPTION]", alert.GetDescription())
+	markdownContent = strings.ReplaceAll(markdownContent, "[RESULT_ERRORS]", strings.Join(result.Errors, ", "))
+	body := map[string]interface{}{
+		"name":             name,
+		"markdown_content": markdownContent,
+		"assignees":        cfg.Assignees,
+		"status":           cfg.Status,
+		"notify_all":       *cfg.NotifyAll,
+	}
+	if cfg.Priority != "none" {
+		body["priority"] = priorityMap[cfg.Priority]
+	}
+	return provider.CreateTask(cfg, body)
+}
+
+func (provider *AlertProvider) CreateTask(cfg *Config, body map[string]interface{}) error {
+	jsonBody, err := json.Marshal(body)
+	if err != nil {
+		return err
+	}
+	createURL := fmt.Sprintf("%s/list/%s/task", cfg.APIURL, cfg.ListID)
+	req, err := http.NewRequest("POST", createURL, bytes.NewBuffer(jsonBody))
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Authorization", cfg.Token)
+	httpClient := client.GetHTTPClient(nil)
+	resp, err := httpClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode >= 400 {
+		return fmt.Errorf("failed to create task, status: %d", resp.StatusCode)
+	}
+	return nil
+}
+
+func (provider *AlertProvider) CloseTask(cfg *Config, ep *endpoint.Endpoint) error {
+	fetchURL := fmt.Sprintf("%s/list/%s/task?include_closed=false", cfg.APIURL, cfg.ListID)
+	req, err := http.NewRequest("GET", fetchURL, nil)
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Authorization", cfg.Token)
+	httpClient := client.GetHTTPClient(nil)
+	resp, err := httpClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode >= 400 {
+		return fmt.Errorf("failed to fetch tasks, status: %d", resp.StatusCode)
+	}
+	var fetchResponse struct {
+		Tasks []struct {
+			ID   string `json:"id"`
+			Name string `json:"name"`
+		} `json:"tasks"`
+	}
+	if err := json.NewDecoder(resp.Body).Decode(&fetchResponse); err != nil {
+		return err
+	}
+	var matchingTaskIDs []string
+	for _, task := range fetchResponse.Tasks {
+		if strings.Contains(task.Name, ep.Group) && strings.Contains(task.Name, ep.Name) {
+			matchingTaskIDs = append(matchingTaskIDs, task.ID)
+		}
+	}
+	if len(matchingTaskIDs) == 0 {
+		return fmt.Errorf("no matching tasks found for %s:%s", ep.Group, ep.Name)
+	}
+	for _, taskID := range matchingTaskIDs {
+		if err := provider.UpdateTaskStatus(cfg, taskID, "closed"); err != nil {
+			return fmt.Errorf("failed to close task %s: %v", taskID, err)
+		}
+	}
+	return nil
+}
+
+func (provider *AlertProvider) UpdateTaskStatus(cfg *Config, taskID, status string) error {
+	updateURL := fmt.Sprintf("%s/task/%s", cfg.APIURL, taskID)
+	body := map[string]interface{}{"status": status}
+	jsonBody, err := json.Marshal(body)
+	if err != nil {
+		return err
+	}
+	req, err := http.NewRequest("PUT", updateURL, bytes.NewBuffer(jsonBody))
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Authorization", cfg.Token)
+	httpClient := client.GetHTTPClient(nil)
+	resp, err := httpClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode >= 400 {
+		return fmt.Errorf("failed to update task %s, status: %d", taskID, resp.StatusCode)
+	}
+	return nil
+}
+
+func (provider *AlertProvider) GetDefaultAlert() *alert.Alert {
+	return provider.DefaultAlert
+}
+
+// GetConfig returns the configuration for the provider with the overrides applied
+func (provider *AlertProvider) GetConfig(group string, alert *alert.Alert) (*Config, error) {
+	cfg := provider.DefaultConfig
+	// Handle group overrides
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if group == override.Group {
+				cfg.Merge(&override.Config)
+				break
+			}
+		}
+	}
+	// Handle alert overrides
+	if len(alert.ProviderOverride) != 0 {
+		overrideConfig := Config{}
+		if err := yaml.Unmarshal(alert.ProviderOverrideAsBytes(), &overrideConfig); err != nil {
+			return nil, err
+		}
+		cfg.Merge(&overrideConfig)
+	}
+	// Validate the configuration
+	err := cfg.Validate()
+	return &cfg, err
+}
+
+func (provider *AlertProvider) ValidateOverrides(group string, alert *alert.Alert) error {
+	_, err := provider.GetConfig(group, alert)
+	return err
+}

alerting/provider/clickup/clickup_test.go

@@ -0,0 +1,310 @@
+package clickup
+
+import (
+	"bytes"
+	"encoding/json"
+	"io"
+	"net/http"
+	"testing"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"github.com/TwiN/gatus/v5/test"
+)
+
+func TestAlertProvider_Validate(t *testing.T) {
+	invalidProviderNoListID := AlertProvider{DefaultConfig: Config{ListID: "", Token: "test-token"}}
+	if err := invalidProviderNoListID.Validate(); err == nil {
+		t.Error("provider shouldn't have been valid without list-id")
+	}
+	invalidProviderNoToken := AlertProvider{DefaultConfig: Config{ListID: "test-list-id", Token: ""}}
+	if err := invalidProviderNoToken.Validate(); err == nil {
+		t.Error("provider shouldn't have been valid without token")
+	}
+	invalidProviderBadPriority := AlertProvider{DefaultConfig: Config{ListID: "test-list-id", Token: "test-token", Priority: "invalid"}}
+	if err := invalidProviderBadPriority.Validate(); err == nil {
+		t.Error("provider shouldn't have been valid with invalid priority")
+	}
+	validProvider := AlertProvider{DefaultConfig: Config{ListID: "test-list-id", Token: "test-token"}}
+	if err := validProvider.Validate(); err != nil {
+		t.Error("provider should've been valid")
+	}
+	if validProvider.DefaultConfig.Priority != "normal" {
+		t.Errorf("expected default priority to be 'normal', got '%s'", validProvider.DefaultConfig.Priority)
+	}
+	validProviderWithAPIURL := AlertProvider{DefaultConfig: Config{ListID: "test-list-id", Token: "test-token", APIURL: "https://api.clickup.com/api/v2"}}
+	if err := validProviderWithAPIURL.Validate(); err != nil {
+		t.Error("provider should've been valid")
+	}
+	validProviderWithPriority := AlertProvider{DefaultConfig: Config{ListID: "test-list-id", Token: "test-token", Priority: "urgent"}}
+	if err := validProviderWithPriority.Validate(); err != nil {
+		t.Error("provider should've been valid with priority 'urgent'")
+	}
+	validProviderWithNone := AlertProvider{DefaultConfig: Config{ListID: "test-list-id", Token: "test-token", Priority: "none"}}
+	if err := validProviderWithNone.Validate(); err != nil {
+		t.Error("provider should've been valid with priority 'none'")
+	}
+}
+
+func TestAlertProvider_ValidateSetsDefaultAPIURL(t *testing.T) {
+	provider := AlertProvider{DefaultConfig: Config{ListID: "test-list-id", Token: "test-token"}}
+	if err := provider.Validate(); err != nil {
+		t.Error("provider should've been valid")
+	}
+	if provider.DefaultConfig.APIURL != "https://api.clickup.com/api/v2" {
+		t.Errorf("expected APIURL to be set to default, got %s", provider.DefaultConfig.APIURL)
+	}
+}
+
+func TestAlertProvider_Send(t *testing.T) {
+	defer client.InjectHTTPClient(nil)
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		Name             string
+		Provider         AlertProvider
+		Endpoint         endpoint.Endpoint
+		Alert            alert.Alert
+		Resolved         bool
+		MockRoundTripper test.MockRoundTripper
+		ExpectedError    bool
+	}{
+		{
+			Name:     "triggered",
+			Provider: AlertProvider{DefaultConfig: Config{ListID: "test-list-id", Token: "test-token"}},
+			Endpoint: endpoint.Endpoint{Name: "endpoint-name", Group: "endpoint-group"},
+			Alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: false,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				if r.Method == "POST" && r.URL.Path == "/api/v2/list/test-list-id/task" {
+					return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+				}
+				return &http.Response{StatusCode: http.StatusInternalServerError, Body: http.NoBody}
+			}),
+			ExpectedError: false,
+		},
+		{
+			Name:     "triggered-error",
+			Provider: AlertProvider{DefaultConfig: Config{ListID: "test-list-id", Token: "test-token"}},
+			Endpoint: endpoint.Endpoint{Name: "endpoint-name", Group: "endpoint-group"},
+			Alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: false,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusInternalServerError, Body: http.NoBody}
+			}),
+			ExpectedError: true,
+		},
+		{
+			Name:     "resolved",
+			Provider: AlertProvider{DefaultConfig: Config{ListID: "test-list-id", Token: "test-token"}},
+			Endpoint: endpoint.Endpoint{Name: "endpoint-name", Group: "endpoint-group"},
+			Alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: true,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				if r.Method == "GET" {
+					// Mock fetch tasks response
+					tasksResponse := map[string]interface{}{
+						"tasks": []map[string]interface{}{
+							{
+								"id":   "task-123",
+								"name": "Health Check: endpoint-group:endpoint-name",
+							},
+						},
+					}
+					body, _ := json.Marshal(tasksResponse)
+					return &http.Response{
+						StatusCode: http.StatusOK,
+						Body:       io.NopCloser(bytes.NewReader(body)),
+					}
+				}
+				if r.Method == "PUT" {
+					// Mock update task status response
+					return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+				}
+				return &http.Response{StatusCode: http.StatusInternalServerError, Body: http.NoBody}
+			}),
+			ExpectedError: false,
+		},
+		{
+			Name:     "resolved-no-matching-tasks",
+			Provider: AlertProvider{DefaultConfig: Config{ListID: "test-list-id", Token: "test-token"}},
+			Endpoint: endpoint.Endpoint{Name: "endpoint-name", Group: "endpoint-group"},
+			Alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: true,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				if r.Method == "GET" {
+					// Mock fetch tasks response with no matching tasks
+					tasksResponse := map[string]interface{}{
+						"tasks": []map[string]interface{}{},
+					}
+					body, _ := json.Marshal(tasksResponse)
+					return &http.Response{
+						StatusCode: http.StatusOK,
+						Body:       io.NopCloser(bytes.NewReader(body)),
+					}
+				}
+				return &http.Response{StatusCode: http.StatusInternalServerError, Body: http.NoBody}
+			}),
+			ExpectedError: true,
+		},
+		{
+			Name:     "resolved-error-fetching-tasks",
+			Provider: AlertProvider{DefaultConfig: Config{ListID: "test-list-id", Token: "test-token"}},
+			Endpoint: endpoint.Endpoint{Name: "endpoint-name", Group: "endpoint-group"},
+			Alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: true,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusInternalServerError, Body: http.NoBody}
+			}),
+			ExpectedError: true,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			client.InjectHTTPClient(&http.Client{Transport: scenario.MockRoundTripper})
+			err := scenario.Provider.Send(
+				&scenario.Endpoint,
+				&scenario.Alert,
+				&endpoint.Result{
+					ConditionResults: []*endpoint.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.Resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.Resolved},
+					},
+					Errors: []string{"error1", "error2"},
+				},
+				scenario.Resolved,
+			)
+			if scenario.ExpectedError && err == nil {
+				t.Error("expected error, got none")
+			}
+			if !scenario.ExpectedError && err != nil {
+				t.Error("expected no error, got", err.Error())
+			}
+		})
+	}
+}
+
+func TestAlertProvider_GetDefaultAlert(t *testing.T) {
+	if (&AlertProvider{DefaultAlert: &alert.Alert{}}).GetDefaultAlert() == nil {
+		t.Error("expected default alert to be not nil")
+	}
+	if (&AlertProvider{DefaultAlert: nil}).GetDefaultAlert() != nil {
+		t.Error("expected default alert to be nil")
+	}
+}
+
+func TestAlertProvider_GetConfig(t *testing.T) {
+	scenarios := []struct {
+		Name           string
+		Provider       AlertProvider
+		InputGroup     string
+		InputAlert     alert.Alert
+		ExpectedOutput Config
+	}{
+		{
+			Name: "provider-no-override-should-default",
+			Provider: AlertProvider{
+				DefaultConfig: Config{ListID: "test-list-id", Token: "test-token"},
+			},
+			InputGroup:     "",
+			InputAlert:     alert.Alert{},
+			ExpectedOutput: Config{ListID: "test-list-id", Token: "test-token", Priority: "normal"},
+		},
+		{
+			Name: "provider-with-alert-override-should-override",
+			Provider: AlertProvider{
+				DefaultConfig: Config{ListID: "test-list-id", Token: "test-token"},
+			},
+			InputGroup: "",
+			InputAlert: alert.Alert{ProviderOverride: map[string]any{
+				"list-id": "override-list-id",
+				"token":   "override-token",
+			}},
+			ExpectedOutput: Config{ListID: "override-list-id", Token: "override-token", Priority: "normal"},
+		},
+		{
+			Name: "provider-with-partial-alert-override-should-merge",
+			Provider: AlertProvider{
+				DefaultConfig: Config{ListID: "test-list-id", Token: "test-token", Status: "in progress"},
+			},
+			InputGroup: "",
+			InputAlert: alert.Alert{ProviderOverride: map[string]any{
+				"status": "closed",
+			}},
+			ExpectedOutput: Config{ListID: "test-list-id", Token: "test-token", Status: "closed", Priority: "normal"},
+		},
+		{
+			Name: "provider-with-assignees-override",
+			Provider: AlertProvider{
+				DefaultConfig: Config{ListID: "test-list-id", Token: "test-token"},
+			},
+			InputGroup: "",
+			InputAlert: alert.Alert{ProviderOverride: map[string]any{
+				"assignees": []string{"user1", "user2"},
+			}},
+			ExpectedOutput: Config{ListID: "test-list-id", Token: "test-token", Assignees: []string{"user1", "user2"}, Priority: "normal"},
+		},
+		{
+			Name: "provider-with-priority-override",
+			Provider: AlertProvider{
+				DefaultConfig: Config{ListID: "test-list-id", Token: "test-token"},
+			},
+			InputGroup: "",
+			InputAlert: alert.Alert{ProviderOverride: map[string]any{
+				"priority": "urgent",
+			}},
+			ExpectedOutput: Config{ListID: "test-list-id", Token: "test-token", Priority: "urgent"},
+		},
+		{
+			Name: "provider-with-none-priority",
+			Provider: AlertProvider{
+				DefaultConfig: Config{ListID: "test-list-id", Token: "test-token"},
+			},
+			InputGroup: "",
+			InputAlert: alert.Alert{ProviderOverride: map[string]any{
+				"priority": "none",
+			}},
+			ExpectedOutput: Config{ListID: "test-list-id", Token: "test-token", Priority: "none"},
+		},
+		{
+			Name: "provider-with-group-override",
+			Provider: AlertProvider{
+				DefaultConfig: Config{ListID: "test-list-id", Token: "test-token"},
+				Overrides: []Override{
+					{Group: "core", Config: Config{ListID: "core-list-id", Priority: "urgent"}},
+				},
+			},
+			InputGroup:     "core",
+			InputAlert:     alert.Alert{},
+			ExpectedOutput: Config{ListID: "core-list-id", Token: "test-token", Priority: "urgent"},
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			got, err := scenario.Provider.GetConfig(scenario.InputGroup, &scenario.InputAlert)
+			if err != nil {
+				t.Fatalf("unexpected error: %s", err)
+			}
+			if got.ListID != scenario.ExpectedOutput.ListID {
+				t.Errorf("expected ListID to be %s, got %s", scenario.ExpectedOutput.ListID, got.ListID)
+			}
+			if got.Token != scenario.ExpectedOutput.Token {
+				t.Errorf("expected Token to be %s, got %s", scenario.ExpectedOutput.Token, got.Token)
+			}
+			if got.Status != scenario.ExpectedOutput.Status {
+				t.Errorf("expected Status to be %s, got %s", scenario.ExpectedOutput.Status, got.Status)
+			}
+			if got.Priority != scenario.ExpectedOutput.Priority {
+				t.Errorf("expected Priority to be %s, got %s", scenario.ExpectedOutput.Priority, got.Priority)
+			}
+			if len(got.Assignees) != len(scenario.ExpectedOutput.Assignees) {
+				t.Errorf("expected Assignees length to be %d, got %d", len(scenario.ExpectedOutput.Assignees), len(got.Assignees))
+			}
+			// Test ValidateOverrides as well, since it really just calls GetConfig
+			if err = scenario.Provider.ValidateOverrides(scenario.InputGroup, &scenario.InputAlert); err != nil {
+				t.Errorf("unexpected error: %s", err)
+			}
+		})
+	}
+}

alerting/provider/custom/custom.go

@@ -111,6 +111,25 @@ func (provider *AlertProvider) buildHTTPRequest(cfg *Config, ep *endpoint.Endpoi
 	resultErrors := strings.ReplaceAll(strings.Join(result.Errors, ","), "\"", "\\\"")
 	body = strings.ReplaceAll(body, "[RESULT_ERRORS]", resultErrors)
 	url = strings.ReplaceAll(url, "[RESULT_ERRORS]", resultErrors)
+
+	if len(result.ConditionResults) > 0 && strings.Contains(body, "[RESULT_CONDITIONS]") {
+		var formattedConditionResults string
+		for index, conditionResult := range result.ConditionResults {
+			var prefix string
+			if conditionResult.Success {
+				prefix = "✅"
+			} else {
+				prefix = "❌"
+			}
+			formattedConditionResults += fmt.Sprintf("%s - `%s`", prefix, conditionResult.Condition)
+			if index < len(result.ConditionResults)-1 {
+				formattedConditionResults += ", "
+			}
+		}
+		body = strings.ReplaceAll(body, "[RESULT_CONDITIONS]", formattedConditionResults)
+		url = strings.ReplaceAll(url, "[RESULT_CONDITIONS]", formattedConditionResults)
+	}
+
 	if resolved {
 		body = strings.ReplaceAll(body, "[ALERT_TRIGGERED_OR_RESOLVED]", provider.GetAlertStatePlaceholderValue(cfg, true))
 		url = strings.ReplaceAll(url, "[ALERT_TRIGGERED_OR_RESOLVED]", provider.GetAlertStatePlaceholderValue(cfg, true))

alerting/provider/custom/custom_test.go

@@ -261,6 +261,69 @@ func TestAlertProvider_buildHTTPRequestWithCustomPlaceholder(t *testing.T) {
 	}
 }
 
+func TestAlertProvider_buildHTTPRequestWithCustomPlaceholderAndResultConditions(t *testing.T) {
+	alertProvider := &AlertProvider{
+		DefaultConfig: Config{
+			URL:     "https://example.com/[ENDPOINT_GROUP]/[ENDPOINT_NAME]?event=[ALERT_TRIGGERED_OR_RESOLVED]&description=[ALERT_DESCRIPTION]",
+			Body:    "[ENDPOINT_NAME],[ENDPOINT_GROUP],[ALERT_DESCRIPTION],[ALERT_TRIGGERED_OR_RESOLVED],[RESULT_CONDITIONS]",
+			Headers: nil,
+			Placeholders: map[string]map[string]string{
+				"ALERT_TRIGGERED_OR_RESOLVED": {
+					"RESOLVED":  "fixed",
+					"TRIGGERED": "boom",
+				},
+			},
+		},
+	}
+	alertDescription := "alert-description"
+	scenarios := []struct {
+		AlertProvider *AlertProvider
+		Resolved      bool
+		ExpectedURL   string
+		ExpectedBody  string
+		NoConditions  bool
+	}{
+		{
+			AlertProvider: alertProvider,
+			Resolved:      true,
+			ExpectedURL:   "https://example.com/endpoint-group/endpoint-name?event=fixed&description=alert-description",
+			ExpectedBody:  "endpoint-name,endpoint-group,alert-description,fixed,✅ - `[CONNECTED] == true`, ✅ - `[STATUS] == 200`",
+		},
+		{
+			AlertProvider: alertProvider,
+			Resolved:      false,
+			ExpectedURL:   "https://example.com/endpoint-group/endpoint-name?event=boom&description=alert-description",
+			ExpectedBody:  "endpoint-name,endpoint-group,alert-description,boom,❌ - `[CONNECTED] == true`, ❌ - `[STATUS] == 200`",
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(fmt.Sprintf("resolved-%v-with-custom-placeholders", scenario.Resolved), func(t *testing.T) {
+			var conditionResults []*endpoint.ConditionResult
+			if !scenario.NoConditions {
+				conditionResults = []*endpoint.ConditionResult{
+					{Condition: "[CONNECTED] == true", Success: scenario.Resolved},
+					{Condition: "[STATUS] == 200", Success: scenario.Resolved},
+				}
+			}
+
+			request := alertProvider.buildHTTPRequest(
+				&alertProvider.DefaultConfig,
+				&endpoint.Endpoint{Name: "endpoint-name", Group: "endpoint-group"},
+				&alert.Alert{Description: &alertDescription},
+				&endpoint.Result{ConditionResults: conditionResults},
+				scenario.Resolved,
+			)
+			if request.URL.String() != scenario.ExpectedURL {
+				t.Error("expected URL to be", scenario.ExpectedURL, "got", request.URL.String())
+			}
+			body, _ := io.ReadAll(request.Body)
+			if string(body) != scenario.ExpectedBody {
+				t.Error("expected body to be", scenario.ExpectedBody, "got", string(body))
+			}
+		})
+	}
+}
+
 func TestAlertProvider_GetAlertStatePlaceholderValueDefaults(t *testing.T) {
 	alertProvider := &AlertProvider{
 		DefaultConfig: Config{

alerting/provider/datadog/datadog.go

@@ -0,0 +1,214 @@
+package datadog
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"time"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"gopkg.in/yaml.v3"
+)
+
+var (
+	ErrAPIKeyNotSet           = errors.New("api-key not set")
+	ErrDuplicateGroupOverride = errors.New("duplicate group override")
+)
+
+type Config struct {
+	APIKey string   `yaml:"api-key"`        // Datadog API key
+	Site   string   `yaml:"site,omitempty"` // Datadog site (e.g., datadoghq.com, datadoghq.eu)
+	Tags   []string `yaml:"tags,omitempty"` // Additional tags to include
+}
+
+func (cfg *Config) Validate() error {
+	if len(cfg.APIKey) == 0 {
+		return ErrAPIKeyNotSet
+	}
+	return nil
+}
+
+func (cfg *Config) Merge(override *Config) {
+	if len(override.APIKey) > 0 {
+		cfg.APIKey = override.APIKey
+	}
+	if len(override.Site) > 0 {
+		cfg.Site = override.Site
+	}
+	if len(override.Tags) > 0 {
+		cfg.Tags = override.Tags
+	}
+}
+
+// AlertProvider is the configuration necessary for sending an alert using Datadog
+type AlertProvider struct {
+	DefaultConfig Config `yaml:",inline"`
+
+	// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
+	DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
+
+	// Overrides is a list of Override that may be prioritized over the default configuration
+	Overrides []Override `yaml:"overrides,omitempty"`
+}
+
+// Override is a case under which the default integration is overridden
+type Override struct {
+	Group  string `yaml:"group"`
+	Config `yaml:",inline"`
+}
+
+// Validate the provider's configuration
+func (provider *AlertProvider) Validate() error {
+	registeredGroups := make(map[string]bool)
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if isAlreadyRegistered := registeredGroups[override.Group]; isAlreadyRegistered || override.Group == "" {
+				return ErrDuplicateGroupOverride
+			}
+			registeredGroups[override.Group] = true
+		}
+	}
+	return provider.DefaultConfig.Validate()
+}
+
+// Send an alert using the provider
+func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) error {
+	cfg, err := provider.GetConfig(ep.Group, alert)
+	if err != nil {
+		return err
+	}
+	site := cfg.Site
+	if site == "" {
+		site = "datadoghq.com"
+	}
+	body, err := provider.buildRequestBody(cfg, ep, alert, result, resolved)
+	if err != nil {
+		return err
+	}
+	buffer := bytes.NewBuffer(body)
+	url := fmt.Sprintf("https://api.%s/api/v1/events", site)
+	request, err := http.NewRequest(http.MethodPost, url, buffer)
+	if err != nil {
+		return err
+	}
+	request.Header.Set("Content-Type", "application/json")
+	request.Header.Set("DD-API-KEY", cfg.APIKey)
+	response, err := client.GetHTTPClient(nil).Do(request)
+	if err != nil {
+		return err
+	}
+	defer response.Body.Close()
+	if response.StatusCode >= 400 {
+		body, _ := io.ReadAll(response.Body)
+		return fmt.Errorf("call to datadog alert returned status code %d: %s", response.StatusCode, string(body))
+	}
+	return nil
+}
+
+type Body struct {
+	Title        string   `json:"title"`
+	Text         string   `json:"text"`
+	Priority     string   `json:"priority"`
+	Tags         []string `json:"tags"`
+	AlertType    string   `json:"alert_type"`
+	SourceType   string   `json:"source_type_name"`
+	DateHappened int64    `json:"date_happened,omitempty"`
+}
+
+// buildRequestBody builds the request body for the provider
+func (provider *AlertProvider) buildRequestBody(cfg *Config, ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) ([]byte, error) {
+	var title, text, priority, alertType string
+	if resolved {
+		title = fmt.Sprintf("Resolved: %s", ep.DisplayName())
+		text = fmt.Sprintf("Alert for %s has been resolved after passing successfully %d time(s) in a row", ep.DisplayName(), alert.SuccessThreshold)
+		priority = "normal"
+		alertType = "success"
+	} else {
+		title = fmt.Sprintf("Alert: %s", ep.DisplayName())
+		text = fmt.Sprintf("Alert for %s has been triggered due to having failed %d time(s) in a row", ep.DisplayName(), alert.FailureThreshold)
+		priority = "normal"
+		alertType = "error"
+	}
+	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
+		text += fmt.Sprintf("\n\nDescription: %s", alertDescription)
+	}
+	if len(result.ConditionResults) > 0 {
+		text += "\n\nCondition Results:"
+		for _, conditionResult := range result.ConditionResults {
+			var status string
+			if conditionResult.Success {
+				status = "✅"
+			} else {
+				status = "❌"
+			}
+			text += fmt.Sprintf("\n%s %s", status, conditionResult.Condition)
+		}
+	}
+	tags := []string{
+		"source:gatus",
+		fmt.Sprintf("endpoint:%s", ep.Name),
+		fmt.Sprintf("status:%s", alertType),
+	}
+	if ep.Group != "" {
+		tags = append(tags, fmt.Sprintf("group:%s", ep.Group))
+	}
+	// Append custom tags
+	if len(cfg.Tags) > 0 {
+		tags = append(tags, cfg.Tags...)
+	}
+	body := Body{
+		Title:        title,
+		Text:         text,
+		Priority:     priority,
+		Tags:         tags,
+		AlertType:    alertType,
+		SourceType:   "gatus",
+		DateHappened: time.Now().Unix(),
+	}
+	bodyAsJSON, err := json.Marshal(body)
+	if err != nil {
+		return nil, err
+	}
+	return bodyAsJSON, nil
+}
+
+// GetDefaultAlert returns the provider's default alert configuration
+func (provider *AlertProvider) GetDefaultAlert() *alert.Alert {
+	return provider.DefaultAlert
+}
+
+// GetConfig returns the configuration for the provider with the overrides applied
+func (provider *AlertProvider) GetConfig(group string, alert *alert.Alert) (*Config, error) {
+	cfg := provider.DefaultConfig
+	// Handle group overrides
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if group == override.Group {
+				cfg.Merge(&override.Config)
+				break
+			}
+		}
+	}
+	// Handle alert overrides
+	if len(alert.ProviderOverride) != 0 {
+		overrideConfig := Config{}
+		if err := yaml.Unmarshal(alert.ProviderOverrideAsBytes(), &overrideConfig); err != nil {
+			return nil, err
+		}
+		cfg.Merge(&overrideConfig)
+	}
+	// Validate the configuration
+	err := cfg.Validate()
+	return &cfg, err
+}
+
+// ValidateOverrides validates the alert's provider override and, if present, the group override
+func (provider *AlertProvider) ValidateOverrides(group string, alert *alert.Alert) error {
+	_, err := provider.GetConfig(group, alert)
+	return err
+}

alerting/provider/datadog/datadog_test.go

@@ -0,0 +1,183 @@
+package datadog
+
+import (
+	"encoding/json"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"github.com/TwiN/gatus/v5/test"
+)
+
+func TestAlertProvider_Validate(t *testing.T) {
+	scenarios := []struct {
+		name     string
+		provider AlertProvider
+		expected error
+	}{
+		{
+			name:     "valid-us1",
+			provider: AlertProvider{DefaultConfig: Config{APIKey: "dd-api-key-123", Site: "datadoghq.com"}},
+			expected: nil,
+		},
+		{
+			name:     "valid-eu",
+			provider: AlertProvider{DefaultConfig: Config{APIKey: "dd-api-key-123", Site: "datadoghq.eu"}},
+			expected: nil,
+		},
+		{
+			name:     "valid-with-tags",
+			provider: AlertProvider{DefaultConfig: Config{APIKey: "dd-api-key-123", Site: "datadoghq.com", Tags: []string{"env:prod", "service:gatus"}}},
+			expected: nil,
+		},
+		{
+			name:     "invalid-api-key",
+			provider: AlertProvider{DefaultConfig: Config{Site: "datadoghq.com"}},
+			expected: ErrAPIKeyNotSet,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			err := scenario.provider.Validate()
+			if err != scenario.expected {
+				t.Errorf("expected %v, got %v", scenario.expected, err)
+			}
+		})
+	}
+}
+
+func TestAlertProvider_Send(t *testing.T) {
+	defer client.InjectHTTPClient(nil)
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		name             string
+		provider         AlertProvider
+		alert            alert.Alert
+		resolved         bool
+		mockRoundTripper test.MockRoundTripper
+		expectedError    bool
+	}{
+		{
+			name:     "triggered",
+			provider: AlertProvider{DefaultConfig: Config{APIKey: "dd-api-key-123", Site: "datadoghq.com"}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				if r.Host != "api.datadoghq.com" {
+					t.Errorf("expected host api.datadoghq.com, got %s", r.Host)
+				}
+				if r.URL.Path != "/api/v1/events" {
+					t.Errorf("expected path /api/v1/events, got %s", r.URL.Path)
+				}
+				if r.Header.Get("DD-API-KEY") != "dd-api-key-123" {
+					t.Errorf("expected DD-API-KEY header to be 'dd-api-key-123', got %s", r.Header.Get("DD-API-KEY"))
+				}
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				if body["title"] == nil {
+					t.Error("expected 'title' field in request body")
+				}
+				title := body["title"].(string)
+				if !strings.Contains(title, "Alert") {
+					t.Errorf("expected title to contain 'Alert', got %s", title)
+				}
+				if body["alert_type"] != "error" {
+					t.Errorf("expected alert_type to be 'error', got %v", body["alert_type"])
+				}
+				if body["priority"] != "normal" {
+					t.Errorf("expected priority to be 'normal', got %v", body["priority"])
+				}
+				text := body["text"].(string)
+				if !strings.Contains(text, "failed 3 time(s)") {
+					t.Errorf("expected text to contain failure count, got %s", text)
+				}
+				return &http.Response{StatusCode: http.StatusAccepted, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "triggered-with-tags",
+			provider: AlertProvider{DefaultConfig: Config{APIKey: "dd-api-key-123", Site: "datadoghq.com", Tags: []string{"env:prod", "service:gatus"}}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				tags := body["tags"].([]interface{})
+				// Datadog adds 3 base tags (source, endpoint, status) + custom tags
+				if len(tags) < 5 {
+					t.Errorf("expected at least 5 tags (3 base + 2 custom), got %d", len(tags))
+				}
+				return &http.Response{StatusCode: http.StatusAccepted, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "resolved",
+			provider: AlertProvider{DefaultConfig: Config{APIKey: "dd-api-key-123", Site: "datadoghq.eu"}},
+			alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: true,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				if r.Host != "api.datadoghq.eu" {
+					t.Errorf("expected host api.datadoghq.eu, got %s", r.Host)
+				}
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				title := body["title"].(string)
+				if !strings.Contains(title, "Resolved") {
+					t.Errorf("expected title to contain 'Resolved', got %s", title)
+				}
+				if body["alert_type"] != "success" {
+					t.Errorf("expected alert_type to be 'success', got %v", body["alert_type"])
+				}
+				return &http.Response{StatusCode: http.StatusAccepted, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "error-response",
+			provider: AlertProvider{DefaultConfig: Config{APIKey: "dd-api-key-123", Site: "datadoghq.com"}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusForbidden, Body: http.NoBody}
+			}),
+			expectedError: true,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			client.InjectHTTPClient(&http.Client{Transport: scenario.mockRoundTripper})
+			err := scenario.provider.Send(
+				&endpoint.Endpoint{Name: "endpoint-name"},
+				&scenario.alert,
+				&endpoint.Result{
+					ConditionResults: []*endpoint.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.resolved},
+					},
+				},
+				scenario.resolved,
+			)
+			if scenario.expectedError && err == nil {
+				t.Error("expected error, got none")
+			}
+			if !scenario.expectedError && err != nil {
+				t.Error("expected no error, got", err.Error())
+			}
+		})
+	}
+}
+
+func TestAlertProvider_GetDefaultAlert(t *testing.T) {
+	if (&AlertProvider{DefaultAlert: &alert.Alert{}}).GetDefaultAlert() == nil {
+		t.Error("expected default alert to be not nil")
+	}
+	if (&AlertProvider{DefaultAlert: nil}).GetDefaultAlert() != nil {
+		t.Error("expected default alert to be nil")
+	}
+}

alerting/provider/discord/discord.go

@@ -20,8 +20,9 @@ var (
 )
 
 type Config struct {
-	WebhookURL string `yaml:"webhook-url"`
-	Title      string `yaml:"title,omitempty"` // Title of the message that will be sent
+	WebhookURL     string `yaml:"webhook-url"`
+	Title          string `yaml:"title,omitempty"`           // Title of the message that will be sent
+	MessageContent string `yaml:"message-content,omitempty"` // Message content for pinging users or groups (e.g. "<@123456789>" or "<@&987654321>")
 }
 
 func (cfg *Config) Validate() error {
@@ -38,6 +39,9 @@ func (cfg *Config) Merge(override *Config) {
 	if len(override.Title) > 0 {
 		cfg.Title = override.Title
 	}
+	if len(override.MessageContent) > 0 {
+		cfg.MessageContent = override.MessageContent
+	}
 }
 
 // AlertProvider is the configuration necessary for sending an alert using Discord
@@ -142,7 +146,7 @@ func (provider *AlertProvider) buildRequestBody(cfg *Config, ep *endpoint.Endpoi
 		title = cfg.Title
 	}
 	body := Body{
-		Content: "",
+		Content: cfg.MessageContent,
 		Embeds: []Embed{
 			{
 				Title:       title,

alerting/provider/discord/discord_test.go

@@ -134,6 +134,16 @@ func TestAlertProvider_Send(t *testing.T) {
 			}),
 			ExpectedError: false,
 		},
+		{
+			Name:     "triggered-with-message-content",
+			Provider: AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com", MessageContent: "<@123456789>"}},
+			Alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: false,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			ExpectedError: false,
+		},
 	}
 	for _, scenario := range scenarios {
 		t.Run(scenario.Name, func(t *testing.T) {
@@ -200,6 +210,27 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 			Resolved:     false,
 			ExpectedBody: "{\"content\":\"\",\"embeds\":[{\"title\":\"provider-title\",\"description\":\"An alert for **endpoint-name** has been triggered due to having failed 3 time(s) in a row:\\n\\u003e description-1\",\"color\":15158332}]}",
 		},
+		{
+			Name:         "triggered-with-message-content-user-mention",
+			Provider:     AlertProvider{DefaultConfig: Config{MessageContent: "<@123456789>"}},
+			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:     false,
+			ExpectedBody: "{\"content\":\"\\u003c@123456789\\u003e\",\"embeds\":[{\"title\":\":helmet_with_white_cross: Gatus\",\"description\":\"An alert for **endpoint-name** has been triggered due to having failed 3 time(s) in a row:\\n\\u003e description-1\",\"color\":15158332,\"fields\":[{\"name\":\"Condition results\",\"value\":\":x: - `[CONNECTED] == true`\\n:x: - `[STATUS] == 200`\\n:x: - `[BODY] != \\\"\\\"`\\n\",\"inline\":false}]}]}",
+		},
+		{
+			Name:         "triggered-with-message-content-role-mention",
+			Provider:     AlertProvider{DefaultConfig: Config{MessageContent: "<@&987654321>"}},
+			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:     false,
+			ExpectedBody: "{\"content\":\"\\u003c@\\u0026987654321\\u003e\",\"embeds\":[{\"title\":\":helmet_with_white_cross: Gatus\",\"description\":\"An alert for **endpoint-name** has been triggered due to having failed 3 time(s) in a row:\\n\\u003e description-1\",\"color\":15158332,\"fields\":[{\"name\":\"Condition results\",\"value\":\":x: - `[CONNECTED] == true`\\n:x: - `[STATUS] == 200`\\n:x: - `[BODY] != \\\"\\\"`\\n\",\"inline\":false}]}]}",
+		},
+		{
+			Name:         "resolved-with-message-content",
+			Provider:     AlertProvider{DefaultConfig: Config{MessageContent: "<@123456789>"}},
+			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:     true,
+			ExpectedBody: "{\"content\":\"\\u003c@123456789\\u003e\",\"embeds\":[{\"title\":\":helmet_with_white_cross: Gatus\",\"description\":\"An alert for **endpoint-name** has been resolved after passing successfully 5 time(s) in a row:\\n\\u003e description-2\",\"color\":3066993,\"fields\":[{\"name\":\"Condition results\",\"value\":\":white_check_mark: - `[CONNECTED] == true`\\n:white_check_mark: - `[STATUS] == 200`\\n:white_check_mark: - `[BODY] != \\\"\\\"`\\n\",\"inline\":false}]}]}",
+		},
 	}
 	for _, scenario := range scenarios {
 		t.Run(scenario.Name, func(t *testing.T) {
@@ -313,6 +344,39 @@ func TestAlertProvider_GetConfig(t *testing.T) {
 			InputAlert:     alert.Alert{ProviderOverride: map[string]any{"webhook-url": "http://alert-example.com"}},
 			ExpectedOutput: Config{WebhookURL: "http://alert-example.com"},
 		},
+		{
+			Name: "provider-with-message-content-default",
+			Provider: AlertProvider{
+				DefaultConfig: Config{WebhookURL: "http://example.com", MessageContent: "<@123456789>"},
+			},
+			InputGroup:     "",
+			InputAlert:     alert.Alert{},
+			ExpectedOutput: Config{WebhookURL: "http://example.com", MessageContent: "<@123456789>"},
+		},
+		{
+			Name: "provider-with-message-content-group-override",
+			Provider: AlertProvider{
+				DefaultConfig: Config{WebhookURL: "http://example.com", MessageContent: "<@123456789>"},
+				Overrides: []Override{
+					{
+						Group:  "group",
+						Config: Config{WebhookURL: "http://group-example.com", MessageContent: "<@&987654321>"},
+					},
+				},
+			},
+			InputGroup:     "group",
+			InputAlert:     alert.Alert{},
+			ExpectedOutput: Config{WebhookURL: "http://group-example.com", MessageContent: "<@&987654321>"},
+		},
+		{
+			Name: "provider-with-message-content-alert-override",
+			Provider: AlertProvider{
+				DefaultConfig: Config{WebhookURL: "http://example.com", MessageContent: "<@123456789>"},
+			},
+			InputGroup:     "",
+			InputAlert:     alert.Alert{ProviderOverride: map[string]any{"message-content": "<@999999999>"}},
+			ExpectedOutput: Config{WebhookURL: "http://example.com", MessageContent: "<@999999999>"},
+		},
 	}
 	for _, scenario := range scenarios {
 		t.Run(scenario.Name, func(t *testing.T) {
@@ -323,6 +387,9 @@ func TestAlertProvider_GetConfig(t *testing.T) {
 			if got.WebhookURL != scenario.ExpectedOutput.WebhookURL {
 				t.Errorf("expected webhook URL to be %s, got %s", scenario.ExpectedOutput.WebhookURL, got.WebhookURL)
 			}
+			if got.MessageContent != scenario.ExpectedOutput.MessageContent {
+				t.Errorf("expected message content to be %s, got %s", scenario.ExpectedOutput.MessageContent, got.MessageContent)
+			}
 			// Test ValidateOverrides as well, since it really just calls GetConfig
 			if err = scenario.Provider.ValidateOverrides(scenario.InputGroup, &scenario.InputAlert); err != nil {
 				t.Errorf("unexpected error: %s", err)

alerting/provider/email/email.go

@@ -166,7 +166,14 @@ func (provider *AlertProvider) buildMessageSubjectAndBody(ep *endpoint.Endpoint,
 	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
 		description = "\n\nAlert description: " + alertDescription
 	}
-	return subject, message + description + formattedConditionResults
+	var extraLabels string
+	if len(ep.ExtraLabels) > 0 {
+		extraLabels = "\n\nExtra labels:\n"
+		for key, value := range ep.ExtraLabels {
+			extraLabels += fmt.Sprintf("  %s: %s\n", key, value)
+		}
+	}
+	return subject, message + description + extraLabels + formattedConditionResults
 }
 
 // GetDefaultAlert returns the provider's default alert configuration

alerting/provider/email/email_test.go

@@ -76,6 +76,7 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 		Provider        AlertProvider
 		Alert           alert.Alert
 		Resolved        bool
+		Endpoint        *endpoint.Endpoint
 		ExpectedSubject string
 		ExpectedBody    string
 	}{
@@ -84,6 +85,7 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 			Provider:        AlertProvider{},
 			Alert:           alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:        false,
+			Endpoint:        &endpoint.Endpoint{Name: "endpoint-name"},
 			ExpectedSubject: "[endpoint-name] Alert triggered",
 			ExpectedBody:    "An alert for endpoint-name has been triggered due to having failed 3 time(s) in a row\n\nAlert description: description-1\n\nCondition results:\n❌ [CONNECTED] == true\n❌ [STATUS] == 200\n",
 		},
@@ -92,14 +94,42 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 			Provider:        AlertProvider{},
 			Alert:           alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:        true,
+			Endpoint:        &endpoint.Endpoint{Name: "endpoint-name"},
 			ExpectedSubject: "[endpoint-name] Alert resolved",
 			ExpectedBody:    "An alert for endpoint-name has been resolved after passing successfully 5 time(s) in a row\n\nAlert description: description-2\n\nCondition results:\n✅ [CONNECTED] == true\n✅ [STATUS] == 200\n",
 		},
+		{
+			Name:            "triggered-with-single-extra-label",
+			Provider:        AlertProvider{},
+			Alert:           alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:        false,
+			Endpoint:        &endpoint.Endpoint{Name: "endpoint-name", ExtraLabels: map[string]string{"environment": "production"}},
+			ExpectedSubject: "[endpoint-name] Alert triggered",
+			ExpectedBody:    "An alert for endpoint-name has been triggered due to having failed 3 time(s) in a row\n\nAlert description: description-1\n\nExtra labels:\n  environment: production\n\n\nCondition results:\n❌ [CONNECTED] == true\n❌ [STATUS] == 200\n",
+		},
+		{
+			Name:            "resolved-with-single-extra-label",
+			Provider:        AlertProvider{},
+			Alert:           alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:        true,
+			Endpoint:        &endpoint.Endpoint{Name: "endpoint-name", ExtraLabels: map[string]string{"service": "api"}},
+			ExpectedSubject: "[endpoint-name] Alert resolved",
+			ExpectedBody:    "An alert for endpoint-name has been resolved after passing successfully 5 time(s) in a row\n\nAlert description: description-2\n\nExtra labels:\n  service: api\n\n\nCondition results:\n✅ [CONNECTED] == true\n✅ [STATUS] == 200\n",
+		},
+		{
+			Name:            "triggered-with-no-extra-labels",
+			Provider:        AlertProvider{},
+			Alert:           alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:        false,
+			Endpoint:        &endpoint.Endpoint{Name: "endpoint-name", ExtraLabels: map[string]string{}},
+			ExpectedSubject: "[endpoint-name] Alert triggered",
+			ExpectedBody:    "An alert for endpoint-name has been triggered due to having failed 3 time(s) in a row\n\nAlert description: description-1\n\nCondition results:\n❌ [CONNECTED] == true\n❌ [STATUS] == 200\n",
+		},
 	}
 	for _, scenario := range scenarios {
 		t.Run(scenario.Name, func(t *testing.T) {
 			subject, body := scenario.Provider.buildMessageSubjectAndBody(
-				&endpoint.Endpoint{Name: "endpoint-name"},
+				scenario.Endpoint,
 				&scenario.Alert,
 				&endpoint.Result{
 					ConditionResults: []*endpoint.ConditionResult{

alerting/provider/ifttt/ifttt.go

@@ -0,0 +1,187 @@
+package ifttt
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"gopkg.in/yaml.v3"
+)
+
+var (
+	ErrWebhookKeyNotSet       = errors.New("webhook-key not set")
+	ErrEventNameNotSet        = errors.New("event-name not set")
+	ErrDuplicateGroupOverride = errors.New("duplicate group override")
+)
+
+type Config struct {
+	WebhookKey string `yaml:"webhook-key"` // IFTTT Webhook key
+	EventName  string `yaml:"event-name"`  // IFTTT event name
+}
+
+func (cfg *Config) Validate() error {
+	if len(cfg.WebhookKey) == 0 {
+		return ErrWebhookKeyNotSet
+	}
+	if len(cfg.EventName) == 0 {
+		return ErrEventNameNotSet
+	}
+	return nil
+}
+
+func (cfg *Config) Merge(override *Config) {
+	if len(override.WebhookKey) > 0 {
+		cfg.WebhookKey = override.WebhookKey
+	}
+	if len(override.EventName) > 0 {
+		cfg.EventName = override.EventName
+	}
+}
+
+// AlertProvider is the configuration necessary for sending an alert using IFTTT
+type AlertProvider struct {
+	DefaultConfig Config `yaml:",inline"`
+
+	// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
+	DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
+
+	// Overrides is a list of Override that may be prioritized over the default configuration
+	Overrides []Override `yaml:"overrides,omitempty"`
+}
+
+// Override is a case under which the default integration is overridden
+type Override struct {
+	Group  string `yaml:"group"`
+	Config `yaml:",inline"`
+}
+
+// Validate the provider's configuration
+func (provider *AlertProvider) Validate() error {
+	registeredGroups := make(map[string]bool)
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if isAlreadyRegistered := registeredGroups[override.Group]; isAlreadyRegistered || override.Group == "" {
+				return ErrDuplicateGroupOverride
+			}
+			registeredGroups[override.Group] = true
+		}
+	}
+	return provider.DefaultConfig.Validate()
+}
+
+// Send an alert using the provider
+func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) error {
+	cfg, err := provider.GetConfig(ep.Group, alert)
+	if err != nil {
+		return err
+	}
+	url := fmt.Sprintf("https://maker.ifttt.com/trigger/%s/with/key/%s", cfg.EventName, cfg.WebhookKey)
+	body, err := provider.buildRequestBody(ep, alert, result, resolved)
+	if err != nil {
+		return err
+	}
+	buffer := bytes.NewBuffer(body)
+	request, err := http.NewRequest(http.MethodPost, url, buffer)
+	if err != nil {
+		return err
+	}
+	request.Header.Set("Content-Type", "application/json")
+	response, err := client.GetHTTPClient(nil).Do(request)
+	if err != nil {
+		return err
+	}
+	defer response.Body.Close()
+	if response.StatusCode >= 400 {
+		body, _ := io.ReadAll(response.Body)
+		return fmt.Errorf("call to ifttt alert returned status code %d: %s", response.StatusCode, string(body))
+	}
+	return err
+}
+
+type Body struct {
+	Value1 string `json:"value1"` // Alert status/title
+	Value2 string `json:"value2"` // Alert message
+	Value3 string `json:"value3"` // Additional details
+}
+
+// buildRequestBody builds the request body for the provider
+func (provider *AlertProvider) buildRequestBody(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) ([]byte, error) {
+	var value1, value2, value3 string
+	if resolved {
+		value1 = fmt.Sprintf("✅ RESOLVED: %s", ep.DisplayName())
+		value2 = fmt.Sprintf("Alert has been resolved after passing successfully %d time(s) in a row", alert.SuccessThreshold)
+	} else {
+		value1 = fmt.Sprintf("🚨 ALERT: %s", ep.DisplayName())
+		value2 = fmt.Sprintf("Endpoint has failed %d time(s) in a row", alert.FailureThreshold)
+	}
+	// Build additional details
+	value3 = fmt.Sprintf("Endpoint: %s", ep.DisplayName())
+	if ep.Group != "" {
+		value3 += fmt.Sprintf(" | Group: %s", ep.Group)
+	}
+	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
+		value3 += fmt.Sprintf(" | Description: %s", alertDescription)
+	}
+	// Add condition results summary
+	if len(result.ConditionResults) > 0 {
+		successCount := 0
+		for _, conditionResult := range result.ConditionResults {
+			if conditionResult.Success {
+				successCount++
+			}
+		}
+		value3 += fmt.Sprintf(" | Conditions: %d/%d passed", successCount, len(result.ConditionResults))
+	}
+	body := Body{
+		Value1: value1,
+		Value2: value2,
+		Value3: value3,
+	}
+	bodyAsJSON, err := json.Marshal(body)
+	if err != nil {
+		return nil, err
+	}
+	return bodyAsJSON, nil
+}
+
+// GetDefaultAlert returns the provider's default alert configuration
+func (provider *AlertProvider) GetDefaultAlert() *alert.Alert {
+	return provider.DefaultAlert
+}
+
+// GetConfig returns the configuration for the provider with the overrides applied
+func (provider *AlertProvider) GetConfig(group string, alert *alert.Alert) (*Config, error) {
+	cfg := provider.DefaultConfig
+	// Handle group overrides
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if group == override.Group {
+				cfg.Merge(&override.Config)
+				break
+			}
+		}
+	}
+	// Handle alert overrides
+	if len(alert.ProviderOverride) != 0 {
+		overrideConfig := Config{}
+		if err := yaml.Unmarshal(alert.ProviderOverrideAsBytes(), &overrideConfig); err != nil {
+			return nil, err
+		}
+		cfg.Merge(&overrideConfig)
+	}
+	// Validate the configuration
+	err := cfg.Validate()
+	return &cfg, err
+}
+
+// ValidateOverrides validates the alert's provider override and, if present, the group override
+func (provider *AlertProvider) ValidateOverrides(group string, alert *alert.Alert) error {
+	_, err := provider.GetConfig(group, alert)
+	return err
+}

alerting/provider/ifttt/ifttt_test.go

@@ -0,0 +1,154 @@
+package ifttt
+
+import (
+	"encoding/json"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"github.com/TwiN/gatus/v5/test"
+)
+
+func TestAlertProvider_Validate(t *testing.T) {
+	scenarios := []struct {
+		name     string
+		provider AlertProvider
+		expected error
+	}{
+		{
+			name:     "valid",
+			provider: AlertProvider{DefaultConfig: Config{WebhookKey: "ifttt-webhook-key-123", EventName: "gatus_alert"}},
+			expected: nil,
+		},
+		{
+			name:     "invalid-webhook-key",
+			provider: AlertProvider{DefaultConfig: Config{EventName: "gatus_alert"}},
+			expected: ErrWebhookKeyNotSet,
+		},
+		{
+			name:     "invalid-event-name",
+			provider: AlertProvider{DefaultConfig: Config{WebhookKey: "ifttt-webhook-key-123"}},
+			expected: ErrEventNameNotSet,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			err := scenario.provider.Validate()
+			if err != scenario.expected {
+				t.Errorf("expected %v, got %v", scenario.expected, err)
+			}
+		})
+	}
+}
+
+func TestAlertProvider_Send(t *testing.T) {
+	defer client.InjectHTTPClient(nil)
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		name             string
+		provider         AlertProvider
+		alert            alert.Alert
+		resolved         bool
+		mockRoundTripper test.MockRoundTripper
+		expectedError    bool
+	}{
+		{
+			name:     "triggered",
+			provider: AlertProvider{DefaultConfig: Config{WebhookKey: "ifttt-webhook-key-123", EventName: "gatus_alert"}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				if r.Host != "maker.ifttt.com" {
+					t.Errorf("expected host maker.ifttt.com, got %s", r.Host)
+				}
+				if r.URL.Path != "/trigger/gatus_alert/with/key/ifttt-webhook-key-123" {
+					t.Errorf("expected path /trigger/gatus_alert/with/key/ifttt-webhook-key-123, got %s", r.URL.Path)
+				}
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				value1 := body["value1"].(string)
+				if !strings.Contains(value1, "ALERT") {
+					t.Errorf("expected value1 to contain 'ALERT', got %s", value1)
+				}
+				value2 := body["value2"].(string)
+				if !strings.Contains(value2, "failed 3 time(s)") {
+					t.Errorf("expected value2 to contain failure count, got %s", value2)
+				}
+				value3 := body["value3"].(string)
+				if !strings.Contains(value3, "Endpoint: endpoint-name") {
+					t.Errorf("expected value3 to contain endpoint details, got %s", value3)
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "resolved",
+			provider: AlertProvider{DefaultConfig: Config{WebhookKey: "ifttt-webhook-key-123", EventName: "gatus_resolved"}},
+			alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: true,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				if r.URL.Path != "/trigger/gatus_resolved/with/key/ifttt-webhook-key-123" {
+					t.Errorf("expected path /trigger/gatus_resolved/with/key/ifttt-webhook-key-123, got %s", r.URL.Path)
+				}
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				value1 := body["value1"].(string)
+				if !strings.Contains(value1, "RESOLVED") {
+					t.Errorf("expected value1 to contain 'RESOLVED', got %s", value1)
+				}
+				value3 := body["value3"].(string)
+				if !strings.Contains(value3, "Endpoint: endpoint-name") {
+					t.Errorf("expected value3 to contain endpoint details, got %s", value3)
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "error-response",
+			provider: AlertProvider{DefaultConfig: Config{WebhookKey: "ifttt-webhook-key-123", EventName: "gatus_alert"}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusUnauthorized, Body: http.NoBody}
+			}),
+			expectedError: true,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			client.InjectHTTPClient(&http.Client{Transport: scenario.mockRoundTripper})
+			err := scenario.provider.Send(
+				&endpoint.Endpoint{Name: "endpoint-name"},
+				&scenario.alert,
+				&endpoint.Result{
+					ConditionResults: []*endpoint.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.resolved},
+					},
+				},
+				scenario.resolved,
+			)
+			if scenario.expectedError && err == nil {
+				t.Error("expected error, got none")
+			}
+			if !scenario.expectedError && err != nil {
+				t.Error("expected no error, got", err.Error())
+			}
+		})
+	}
+}
+
+func TestAlertProvider_GetDefaultAlert(t *testing.T) {
+	if (&AlertProvider{DefaultAlert: &alert.Alert{}}).GetDefaultAlert() == nil {
+		t.Error("expected default alert to be not nil")
+	}
+	if (&AlertProvider{DefaultAlert: nil}).GetDefaultAlert() != nil {
+		t.Error("expected default alert to be nil")
+	}
+}

alerting/provider/incidentio/dedup.go

@@ -0,0 +1,18 @@
+package incidentio
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+	"time"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+)
+
+// generateDeduplicationKey generates a unique deduplication_key for incident.io
+func generateDeduplicationKey(ep *endpoint.Endpoint, alert *alert.Alert) string {
+	data := fmt.Sprintf("%s|%s|%s|%d", ep.Key(), alert.Type, alert.GetDescription(), time.Now().UnixNano())
+	hash := sha256.Sum256([]byte(data))
+	return hex.EncodeToString(hash[:])
+}

alerting/provider/incidentio/incidentio.go

@@ -153,27 +153,44 @@ func (provider *AlertProvider) buildRequestBody(cfg *Config, ep *endpoint.Endpoi
 		} else {
 			prefix = "🔴"
 		}
-		// No need for \n since incident.io trims it anyways.
 		formattedConditionResults += fmt.Sprintf(" %s %s ", prefix, conditionResult.Condition)
 	}
 	if len(alert.GetDescription()) > 0 {
 		message += " with the following description: " + alert.GetDescription()
 	}
 	message += fmt.Sprintf(" and the following conditions: %s ", formattedConditionResults)
-	var body []byte
+
+	// Generate deduplication key if empty (first firing)
+	if alert.ResolveKey == "" {
+		// Generate unique key (endpoint key, alert type, timestamp)
+		alert.ResolveKey = generateDeduplicationKey(ep, alert)
+	}
+	// Extract alert_source_config_id from URL
 	alertSourceID := strings.TrimPrefix(cfg.URL, restAPIUrl)
-	body, _ = json.Marshal(Body{
+	// Merge metadata: cfg.Metadata + ep.ExtraLabels (if present)
+	mergedMetadata := map[string]interface{}{}
+	// Copy cfg.Metadata
+	for k, v := range cfg.Metadata {
+		mergedMetadata[k] = v
+	}
+	// Add extra labels from endpoint (if present)
+	if ep.ExtraLabels != nil && len(ep.ExtraLabels) > 0 {
+		for k, v := range ep.ExtraLabels {
+			mergedMetadata[k] = v
+		}
+	}
+
+	body, _ := json.Marshal(Body{
 		AlertSourceConfigID: alertSourceID,
 		Title:               "Gatus: " + ep.DisplayName(),
 		Status:              status,
 		DeduplicationKey:    alert.ResolveKey,
 		Description:         message,
 		SourceURL:           cfg.SourceURL,
-		Metadata:            cfg.Metadata,
+		Metadata:            mergedMetadata,
 	})
 	fmt.Printf("%v", string(body))
 	return body
-
 }
 func (provider *AlertProvider) GetConfig(group string, alert *alert.Alert) (*Config, error) {
 	cfg := provider.DefaultConfig

alerting/provider/incidentio/incidentio_test.go

@@ -183,39 +183,63 @@ func TestAlertProvider_BuildRequestBody(t *testing.T) {
 	secondDescription := "description-2"
 	restAPIUrl := "https://api.incident.io/v2/alert_events/http/"
 	scenarios := []struct {
-		Name         string
-		Provider     AlertProvider
-		Alert        alert.Alert
-		Resolved     bool
-		ExpectedBody string
+		Name                     string
+		Provider                 AlertProvider
+		Alert                    alert.Alert
+		Resolved                 bool
+		ExpectedAlertSourceID    string
+		ExpectedStatus           string
+		ExpectedTitle            string
+		ExpectedDescription      string
+		ExpectedSourceURL        string
+		ExpectedMetadata         map[string]interface{}
+		ShouldHaveDeduplicationKey bool
 	}{
 		{
-			Name:         "triggered",
-			Provider:     AlertProvider{DefaultConfig: Config{URL: restAPIUrl + "some-id", AuthToken: "some-token"}},
-			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
-			Resolved:     false,
-			ExpectedBody: `{"alert_source_config_id":"some-id","status":"firing","title":"Gatus: endpoint-name","description":"An alert has been triggered due to having failed 3 time(s) in a row with the following description: description-1 and the following conditions:  🔴 [CONNECTED] == true  🔴 [STATUS] == 200  "}`,
+			Name:                     "triggered",
+			Provider:                 AlertProvider{DefaultConfig: Config{URL: restAPIUrl + "some-id", AuthToken: "some-token"}},
+			Alert:                    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:                 false,
+			ExpectedAlertSourceID:    "some-id",
+			ExpectedStatus:           "firing",
+			ExpectedTitle:            "Gatus: endpoint-name",
+			ExpectedDescription:      "An alert has been triggered due to having failed 3 time(s) in a row with the following description: description-1 and the following conditions:  🔴 [CONNECTED] == true  🔴 [STATUS] == 200  ",
+			ShouldHaveDeduplicationKey: true,
 		},
 		{
-			Name:         "resolved",
-			Provider:     AlertProvider{DefaultConfig: Config{URL: restAPIUrl + "some-id", AuthToken: "some-token"}},
-			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
-			Resolved:     true,
-			ExpectedBody: `{"alert_source_config_id":"some-id","status":"resolved","title":"Gatus: endpoint-name","description":"An alert has been resolved after passing successfully 5 time(s) in a row with the following description: description-2 and the following conditions:  🟢 [CONNECTED] == true  🟢 [STATUS] == 200  "}`,
+			Name:                     "resolved",
+			Provider:                 AlertProvider{DefaultConfig: Config{URL: restAPIUrl + "some-id", AuthToken: "some-token"}},
+			Alert:                    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:                 true,
+			ExpectedAlertSourceID:    "some-id",
+			ExpectedStatus:           "resolved",
+			ExpectedTitle:            "Gatus: endpoint-name",
+			ExpectedDescription:      "An alert has been resolved after passing successfully 5 time(s) in a row with the following description: description-2 and the following conditions:  🟢 [CONNECTED] == true  🟢 [STATUS] == 200  ",
+			ShouldHaveDeduplicationKey: true,
 		},
 		{
-			Name:         "resolved-with-metadata-source-url",
-			Provider:     AlertProvider{DefaultConfig: Config{URL: restAPIUrl + "some-id", AuthToken: "some-token", Metadata: map[string]interface{}{"service": "some-service", "team": "very-core"}, SourceURL: "some-source-url"}},
-			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
-			Resolved:     true,
-			ExpectedBody: `{"alert_source_config_id":"some-id","status":"resolved","title":"Gatus: endpoint-name","description":"An alert has been resolved after passing successfully 5 time(s) in a row with the following description: description-2 and the following conditions:  🟢 [CONNECTED] == true  🟢 [STATUS] == 200  ","source_url":"some-source-url","metadata":{"service":"some-service","team":"very-core"}}`,
+			Name:                     "resolved-with-metadata-source-url",
+			Provider:                 AlertProvider{DefaultConfig: Config{URL: restAPIUrl + "some-id", AuthToken: "some-token", Metadata: map[string]interface{}{"service": "some-service", "team": "very-core"}, SourceURL: "some-source-url"}},
+			Alert:                    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:                 true,
+			ExpectedAlertSourceID:    "some-id",
+			ExpectedStatus:           "resolved",
+			ExpectedTitle:            "Gatus: endpoint-name",
+			ExpectedDescription:      "An alert has been resolved after passing successfully 5 time(s) in a row with the following description: description-2 and the following conditions:  🟢 [CONNECTED] == true  🟢 [STATUS] == 200  ",
+			ExpectedSourceURL:        "some-source-url",
+			ExpectedMetadata:         map[string]interface{}{"service": "some-service", "team": "very-core"},
+			ShouldHaveDeduplicationKey: true,
 		},
 		{
-			Name:         "group-override",
-			Provider:     AlertProvider{DefaultConfig: Config{URL: restAPIUrl + "some-id", AuthToken: "some-token"}, Overrides: []Override{{Group: "g", Config: Config{URL: restAPIUrl + "different-id", AuthToken: "some-token"}}}},
-			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
-			Resolved:     false,
-			ExpectedBody: `{"alert_source_config_id":"different-id","status":"firing","title":"Gatus: endpoint-name","description":"An alert has been triggered due to having failed 3 time(s) in a row with the following description: description-1 and the following conditions:  🔴 [CONNECTED] == true  🔴 [STATUS] == 200  "}`,
+			Name:                     "group-override",
+			Provider:                 AlertProvider{DefaultConfig: Config{URL: restAPIUrl + "some-id", AuthToken: "some-token"}, Overrides: []Override{{Group: "g", Config: Config{URL: restAPIUrl + "different-id", AuthToken: "some-token"}}}},
+			Alert:                    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:                 false,
+			ExpectedAlertSourceID:    "different-id",
+			ExpectedStatus:           "firing",
+			ExpectedTitle:            "Gatus: endpoint-name",
+			ExpectedDescription:      "An alert has been triggered due to having failed 3 time(s) in a row with the following description: description-1 and the following conditions:  🔴 [CONNECTED] == true  🔴 [STATUS] == 200  ",
+			ShouldHaveDeduplicationKey: true,
 		},
 	}
 
@@ -237,13 +261,42 @@ func TestAlertProvider_BuildRequestBody(t *testing.T) {
 				},
 				scenario.Resolved,
 			)
-			if string(body) != scenario.ExpectedBody {
-				t.Errorf("expected:\n%s\ngot:\n%s", scenario.ExpectedBody, body)
-			}
-			out := make(map[string]interface{})
-			if err := json.Unmarshal(body, &out); err != nil {
+			
+			// Parse the JSON body
+			var parsedBody Body
+			if err := json.Unmarshal(body, &parsedBody); err != nil {
 				t.Error("expected body to be valid JSON, got error:", err.Error())
 			}
+			
+			// Validate individual fields
+			if parsedBody.AlertSourceConfigID != scenario.ExpectedAlertSourceID {
+				t.Errorf("expected alert_source_config_id to be %s, got %s", scenario.ExpectedAlertSourceID, parsedBody.AlertSourceConfigID)
+			}
+			if parsedBody.Status != scenario.ExpectedStatus {
+				t.Errorf("expected status to be %s, got %s", scenario.ExpectedStatus, parsedBody.Status)
+			}
+			if parsedBody.Title != scenario.ExpectedTitle {
+				t.Errorf("expected title to be %s, got %s", scenario.ExpectedTitle, parsedBody.Title)
+			}
+			if parsedBody.Description != scenario.ExpectedDescription {
+				t.Errorf("expected description to be %s, got %s", scenario.ExpectedDescription, parsedBody.Description)
+			}
+			if scenario.ExpectedSourceURL != "" && parsedBody.SourceURL != scenario.ExpectedSourceURL {
+				t.Errorf("expected source_url to be %s, got %s", scenario.ExpectedSourceURL, parsedBody.SourceURL)
+			}
+			if scenario.ExpectedMetadata != nil {
+				metadataJSON, _ := json.Marshal(parsedBody.Metadata)
+				expectedMetadataJSON, _ := json.Marshal(scenario.ExpectedMetadata)
+				if string(metadataJSON) != string(expectedMetadataJSON) {
+					t.Errorf("expected metadata to be %s, got %s", string(expectedMetadataJSON), string(metadataJSON))
+				}
+			}
+			// Validate that deduplication_key exists and is not empty
+			if scenario.ShouldHaveDeduplicationKey {
+				if parsedBody.DeduplicationKey == "" {
+					t.Error("expected deduplication_key to be present and non-empty")
+				}
+			}
 		})
 	}
 }

alerting/provider/line/line.go

@@ -0,0 +1,193 @@
+package line
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"gopkg.in/yaml.v3"
+)
+
+var (
+	ErrChannelAccessTokenNotSet = errors.New("channel-access-token not set")
+	ErrUserIDsNotSet            = errors.New("user-ids not set")
+	ErrDuplicateGroupOverride   = errors.New("duplicate group override")
+)
+
+type Config struct {
+	ChannelAccessToken string   `yaml:"channel-access-token"` // Line Messaging API channel access token
+	UserIDs            []string `yaml:"user-ids"`             // List of Line user IDs to send messages to
+}
+
+func (cfg *Config) Validate() error {
+	if len(cfg.ChannelAccessToken) == 0 {
+		return ErrChannelAccessTokenNotSet
+	}
+	if len(cfg.UserIDs) == 0 {
+		return ErrUserIDsNotSet
+	}
+	return nil
+}
+
+func (cfg *Config) Merge(override *Config) {
+	if len(override.ChannelAccessToken) > 0 {
+		cfg.ChannelAccessToken = override.ChannelAccessToken
+	}
+	if len(override.UserIDs) > 0 {
+		cfg.UserIDs = override.UserIDs
+	}
+}
+
+// AlertProvider is the configuration necessary for sending an alert using Line
+type AlertProvider struct {
+	DefaultConfig Config `yaml:",inline"`
+
+	// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
+	DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
+
+	// Overrides is a list of Override that may be prioritized over the default configuration
+	Overrides []Override `yaml:"overrides,omitempty"`
+}
+
+// Override is a case under which the default integration is overridden
+type Override struct {
+	Group  string `yaml:"group"`
+	Config `yaml:",inline"`
+}
+
+// Validate the provider's configuration
+func (provider *AlertProvider) Validate() error {
+	registeredGroups := make(map[string]bool)
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if isAlreadyRegistered := registeredGroups[override.Group]; isAlreadyRegistered || override.Group == "" {
+				return ErrDuplicateGroupOverride
+			}
+			registeredGroups[override.Group] = true
+		}
+	}
+	return provider.DefaultConfig.Validate()
+}
+
+// Send an alert using the provider
+func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) error {
+	cfg, err := provider.GetConfig(ep.Group, alert)
+	if err != nil {
+		return err
+	}
+	for _, userID := range cfg.UserIDs {
+		body, err := provider.buildRequestBody(ep, alert, result, resolved, userID)
+		if err != nil {
+			return err
+		}
+		buffer := bytes.NewBuffer(body)
+		request, err := http.NewRequest(http.MethodPost, "https://api.line.me/v2/bot/message/push", buffer)
+		if err != nil {
+			return err
+		}
+		request.Header.Set("Content-Type", "application/json")
+		request.Header.Set("Authorization", fmt.Sprintf("Bearer %s", cfg.ChannelAccessToken))
+		response, err := client.GetHTTPClient(nil).Do(request)
+		if err != nil {
+			return err
+		}
+		if response.StatusCode >= 400 {
+			body, _ := io.ReadAll(response.Body)
+			response.Body.Close()
+			return fmt.Errorf("call to line alert returned status code %d: %s", response.StatusCode, string(body))
+		}
+		response.Body.Close()
+	}
+	return nil
+}
+
+type Body struct {
+	To       string    `json:"to"`
+	Messages []Message `json:"messages"`
+}
+
+type Message struct {
+	Type string `json:"type"`
+	Text string `json:"text"`
+}
+
+// buildRequestBody builds the request body for the provider
+func (provider *AlertProvider) buildRequestBody(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool, userID string) ([]byte, error) {
+	var message string
+	if resolved {
+		message = fmt.Sprintf("✅ RESOLVED: %s\n\nAlert has been resolved after passing successfully %d time(s) in a row", ep.DisplayName(), alert.SuccessThreshold)
+	} else {
+		message = fmt.Sprintf("⚠️ ALERT: %s\n\nEndpoint has failed %d time(s) in a row", ep.DisplayName(), alert.FailureThreshold)
+	}
+	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
+		message += fmt.Sprintf("\n\nDescription: %s", alertDescription)
+	}
+	if len(result.ConditionResults) > 0 {
+		message += "\n\nCondition Results:"
+		for _, conditionResult := range result.ConditionResults {
+			var status string
+			if conditionResult.Success {
+				status = "✅"
+			} else {
+				status = "❌"
+			}
+			message += fmt.Sprintf("\n%s %s", status, conditionResult.Condition)
+		}
+	}
+	body := Body{
+		To: userID,
+		Messages: []Message{
+			{
+				Type: "text",
+				Text: message,
+			},
+		},
+	}
+	bodyAsJSON, err := json.Marshal(body)
+	if err != nil {
+		return nil, err
+	}
+	return bodyAsJSON, nil
+}
+
+// GetDefaultAlert returns the provider's default alert configuration
+func (provider *AlertProvider) GetDefaultAlert() *alert.Alert {
+	return provider.DefaultAlert
+}
+
+// GetConfig returns the configuration for the provider with the overrides applied
+func (provider *AlertProvider) GetConfig(group string, alert *alert.Alert) (*Config, error) {
+	cfg := provider.DefaultConfig
+	// Handle group overrides
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if group == override.Group {
+				cfg.Merge(&override.Config)
+				break
+			}
+		}
+	}
+	// Handle alert overrides
+	if len(alert.ProviderOverride) != 0 {
+		overrideConfig := Config{}
+		if err := yaml.Unmarshal(alert.ProviderOverrideAsBytes(), &overrideConfig); err != nil {
+			return nil, err
+		}
+		cfg.Merge(&overrideConfig)
+	}
+	// Validate the configuration
+	err := cfg.Validate()
+	return &cfg, err
+}
+
+// ValidateOverrides validates the alert's provider override and, if present, the group override
+func (provider *AlertProvider) ValidateOverrides(group string, alert *alert.Alert) error {
+	_, err := provider.GetConfig(group, alert)
+	return err
+}

alerting/provider/line/line_test.go

@@ -0,0 +1,147 @@
+package line
+
+import (
+	"encoding/json"
+	"net/http"
+	"testing"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"github.com/TwiN/gatus/v5/test"
+)
+
+func TestAlertProvider_Validate(t *testing.T) {
+	scenarios := []struct {
+		name     string
+		provider AlertProvider
+		expected error
+	}{
+		{
+			name:     "valid",
+			provider: AlertProvider{DefaultConfig: Config{ChannelAccessToken: "token123", UserIDs: []string{"U123"}}},
+			expected: nil,
+		},
+		{
+			name:     "invalid-channel-access-token",
+			provider: AlertProvider{DefaultConfig: Config{UserIDs: []string{"U123"}}},
+			expected: ErrChannelAccessTokenNotSet,
+		},
+		{
+			name:     "invalid-user-ids",
+			provider: AlertProvider{DefaultConfig: Config{ChannelAccessToken: "token123"}},
+			expected: ErrUserIDsNotSet,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			err := scenario.provider.Validate()
+			if err != scenario.expected {
+				t.Errorf("expected %v, got %v", scenario.expected, err)
+			}
+		})
+	}
+}
+
+func TestAlertProvider_Send(t *testing.T) {
+	defer client.InjectHTTPClient(nil)
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		name             string
+		provider         AlertProvider
+		alert            alert.Alert
+		resolved         bool
+		mockRoundTripper test.MockRoundTripper
+		expectedError    bool
+	}{
+		{
+			name:     "triggered",
+			provider: AlertProvider{DefaultConfig: Config{ChannelAccessToken: "token123", UserIDs: []string{"U123", "U456"}}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				if r.URL.Path != "/v2/bot/message/push" {
+					t.Errorf("expected path /v2/bot/message/push, got %s", r.URL.Path)
+				}
+				if r.Header.Get("Authorization") != "Bearer token123" {
+					t.Errorf("expected Authorization header to be 'Bearer token123', got %s", r.Header.Get("Authorization"))
+				}
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				if body["to"] == nil {
+					t.Error("expected 'to' field in request body")
+				}
+				messages := body["messages"].([]interface{})
+				if len(messages) != 1 {
+					t.Errorf("expected 1 message, got %d", len(messages))
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "resolved",
+			provider: AlertProvider{DefaultConfig: Config{ChannelAccessToken: "token123", UserIDs: []string{"U123"}}},
+			alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: true,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				messages := body["messages"].([]interface{})
+				message := messages[0].(map[string]interface{})
+				text := message["text"].(string)
+				if !contains(text, "RESOLVED") {
+					t.Errorf("expected message to contain 'RESOLVED', got %s", text)
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "error-response",
+			provider: AlertProvider{DefaultConfig: Config{ChannelAccessToken: "token123", UserIDs: []string{"U123"}}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusBadRequest, Body: http.NoBody}
+			}),
+			expectedError: true,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			client.InjectHTTPClient(&http.Client{Transport: scenario.mockRoundTripper})
+			err := scenario.provider.Send(
+				&endpoint.Endpoint{Name: "endpoint-name"},
+				&scenario.alert,
+				&endpoint.Result{
+					ConditionResults: []*endpoint.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.resolved},
+					},
+				},
+				scenario.resolved,
+			)
+			if scenario.expectedError && err == nil {
+				t.Error("expected error, got none")
+			}
+			if !scenario.expectedError && err != nil {
+				t.Error("expected no error, got", err.Error())
+			}
+		})
+	}
+}
+
+func TestAlertProvider_GetDefaultAlert(t *testing.T) {
+	if (&AlertProvider{DefaultAlert: &alert.Alert{}}).GetDefaultAlert() == nil {
+		t.Error("expected default alert to be not nil")
+	}
+	if (&AlertProvider{DefaultAlert: nil}).GetDefaultAlert() != nil {
+		t.Error("expected default alert to be nil")
+	}
+}
+
+func contains(s, substr string) bool {
+	return len(s) >= len(substr) && s[0:len(substr)] == substr || len(s) > len(substr) && contains(s[1:], substr)
+}

alerting/provider/matrix/matrix.go

@@ -9,7 +9,6 @@ import (
 	"math/rand"
 	"net/http"
 	"net/url"
-	"time"
 
 	"github.com/TwiN/gatus/v5/alerting/alert"
 	"github.com/TwiN/gatus/v5/client"
@@ -203,7 +202,6 @@ func randStringBytes(n int) string {
 	// All the compatible characters to use in a transaction ID
 	const availableCharacterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
 	b := make([]byte, n)
-	rand.Seed(time.Now().UnixNano())
 	for i := range b {
 		b[i] = availableCharacterBytes[rand.Intn(len(availableCharacterBytes))]
 	}

alerting/provider/n8n/n8n.go

@@ -1,4 +1,4 @@
-package jetbrainsspace
+package n8n
 
 import (
 	"bytes"
@@ -15,50 +15,36 @@ import (
 )
 
 var (
-	ErrProjectNotSet          = errors.New("project not set")
-	ErrChannelIDNotSet        = errors.New("channel-id not set")
-	ErrTokenNotSet            = errors.New("token not set")
+	ErrWebhookURLNotSet       = errors.New("webhook-url not set")
 	ErrDuplicateGroupOverride = errors.New("duplicate group override")
 )
 
 type Config struct {
-	Project   string `yaml:"project"`    // Project name
-	ChannelID string `yaml:"channel-id"` // Chat Channel ID
-	Token     string `yaml:"token"`      // Bearer Token
+	WebhookURL string `yaml:"webhook-url"`
+	Title      string `yaml:"title,omitempty"` // Title of the message that will be sent
 }
 
 func (cfg *Config) Validate() error {
-	if len(cfg.Project) == 0 {
-		return ErrProjectNotSet
-	}
-	if len(cfg.ChannelID) == 0 {
-		return ErrChannelIDNotSet
-	}
-	if len(cfg.Token) == 0 {
-		return ErrTokenNotSet
+	if len(cfg.WebhookURL) == 0 {
+		return ErrWebhookURLNotSet
 	}
 	return nil
 }
 
 func (cfg *Config) Merge(override *Config) {
-	if len(override.Project) > 0 {
-		cfg.Project = override.Project
+	if len(override.WebhookURL) > 0 {
+		cfg.WebhookURL = override.WebhookURL
 	}
-	if len(override.ChannelID) > 0 {
-		cfg.ChannelID = override.ChannelID
-	}
-	if len(override.Token) > 0 {
-		cfg.Token = override.Token
+	if len(override.Title) > 0 {
+		cfg.Title = override.Title
 	}
 }
 
-// AlertProvider is the configuration necessary for sending an alert using JetBrains Space
+// AlertProvider is the configuration necessary for sending an alert using n8n
 type AlertProvider struct {
 	DefaultConfig Config `yaml:",inline"`
-
 	// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
 	DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
-
 	// Overrides is a list of Override that may be prioritized over the default configuration
 	Overrides []Override `yaml:"overrides,omitempty"`
 }
@@ -90,13 +76,11 @@ func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, r
 		return err
 	}
 	buffer := bytes.NewBuffer(provider.buildRequestBody(cfg, ep, alert, result, resolved))
-	url := fmt.Sprintf("https://%s.jetbrains.space/api/http/chats/messages/send-message", cfg.Project)
-	request, err := http.NewRequest(http.MethodPost, url, buffer)
+	request, err := http.NewRequest(http.MethodPost, cfg.WebhookURL, buffer)
 	if err != nil {
 		return err
 	}
 	request.Header.Set("Content-Type", "application/json")
-	request.Header.Set("Authorization", "Bearer "+cfg.Token)
 	response, err := client.GetHTTPClient(nil).Do(request)
 	if err != nil {
 		return err
@@ -110,78 +94,50 @@ func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, r
 }
 
 type Body struct {
-	Channel string  `json:"channel"`
-	Content Content `json:"content"`
+	Title            string            `json:"title"`
+	EndpointName     string            `json:"endpoint_name"`
+	EndpointGroup    string            `json:"endpoint_group,omitempty"`
+	EndpointURL      string            `json:"endpoint_url"`
+	AlertDescription string            `json:"alert_description,omitempty"`
+	Resolved         bool              `json:"resolved"`
+	Message          string            `json:"message"`
+	ConditionResults []ConditionResult `json:"condition_results,omitempty"`
 }
 
-type Content struct {
-	ClassName string    `json:"className"`
-	Style     string    `json:"style"`
-	Sections  []Section `json:"sections,omitempty"`
-}
-
-type Section struct {
-	ClassName string    `json:"className"`
-	Elements  []Element `json:"elements"`
-	Header    string    `json:"header"`
-}
-
-type Element struct {
-	ClassName string    `json:"className"`
-	Accessory Accessory `json:"accessory"`
-	Style     string    `json:"style"`
-	Size      string    `json:"size"`
-	Content   string    `json:"content"`
-}
-
-type Accessory struct {
-	ClassName string `json:"className"`
-	Icon      Icon   `json:"icon"`
-	Style     string `json:"style"`
-}
-
-type Icon struct {
-	Icon string `json:"icon"`
+type ConditionResult struct {
+	Condition string `json:"condition"`
+	Success   bool   `json:"success"`
 }
 
 // buildRequestBody builds the request body for the provider
 func (provider *AlertProvider) buildRequestBody(cfg *Config, ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) []byte {
-	body := Body{
-		Channel: "id:" + cfg.ChannelID,
-		Content: Content{
-			ClassName: "ChatMessage.Block",
-			Sections: []Section{{
-				ClassName: "MessageSection",
-				Elements:  []Element{},
-			}},
-		},
-	}
+	var message string
 	if resolved {
-		body.Content.Style = "SUCCESS"
-		body.Content.Sections[0].Header = fmt.Sprintf("An alert for *%s* has been resolved after passing successfully %d time(s) in a row", ep.DisplayName(), alert.SuccessThreshold)
+		message = fmt.Sprintf("An alert for %s has been resolved after passing successfully %d time(s) in a row", ep.DisplayName(), alert.SuccessThreshold)
 	} else {
-		body.Content.Style = "WARNING"
-		body.Content.Sections[0].Header = fmt.Sprintf("An alert for *%s* has been triggered due to having failed %d time(s) in a row", ep.DisplayName(), alert.FailureThreshold)
+		message = fmt.Sprintf("An alert for %s has been triggered due to having failed %d time(s) in a row", ep.DisplayName(), alert.FailureThreshold)
 	}
+	title := "Gatus"
+	if cfg.Title != "" {
+		title = cfg.Title
+	}
+	var conditionResults []ConditionResult
 	for _, conditionResult := range result.ConditionResults {
-		icon := "warning"
-		style := "WARNING"
-		if conditionResult.Success {
-			icon = "success"
-			style = "SUCCESS"
-		}
-		body.Content.Sections[0].Elements = append(body.Content.Sections[0].Elements, Element{
-			ClassName: "MessageText",
-			Accessory: Accessory{
-				ClassName: "MessageIcon",
-				Icon:      Icon{Icon: icon},
-				Style:     style,
-			},
-			Style:   style,
-			Size:    "REGULAR",
-			Content: conditionResult.Condition,
+		conditionResults = append(conditionResults, ConditionResult{
+			Condition: conditionResult.Condition,
+			Success:   conditionResult.Success,
 		})
 	}
+	body := Body{
+		Title:            title,
+		EndpointName:     ep.Name,
+		EndpointGroup:    ep.Group,
+		EndpointURL:      ep.URL,
+		AlertDescription: alert.GetDescription(),
+		Resolved:         resolved,
+		Message:          message,
+		ConditionResults: conditionResults,
+	}
 	bodyAsJSON, _ := json.Marshal(body)
 	return bodyAsJSON
 }

alerting/provider/n8n/n8n_test.go

@@ -0,0 +1,364 @@
+package n8n
+
+import (
+	"encoding/json"
+	"net/http"
+	"testing"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"github.com/TwiN/gatus/v5/test"
+)
+
+func TestAlertProvider_Validate(t *testing.T) {
+	invalidProvider := AlertProvider{DefaultConfig: Config{WebhookURL: ""}}
+	if err := invalidProvider.Validate(); err == nil {
+		t.Error("provider shouldn't have been valid")
+	}
+	validProvider := AlertProvider{DefaultConfig: Config{WebhookURL: "https://example.com"}}
+	if err := validProvider.Validate(); err != nil {
+		t.Error("provider should've been valid")
+	}
+}
+
+func TestAlertProvider_ValidateWithOverride(t *testing.T) {
+	providerWithInvalidOverrideGroup := AlertProvider{
+		Overrides: []Override{
+			{
+				Config: Config{WebhookURL: "http://example.com"},
+				Group:  "",
+			},
+		},
+	}
+	if err := providerWithInvalidOverrideGroup.Validate(); err == nil {
+		t.Error("provider Group shouldn't have been valid")
+	}
+	providerWithInvalidOverrideTo := AlertProvider{
+		Overrides: []Override{
+			{
+				Config: Config{WebhookURL: ""},
+				Group:  "group",
+			},
+		},
+	}
+	if err := providerWithInvalidOverrideTo.Validate(); err == nil {
+		t.Error("provider webhook URL shouldn't have been valid")
+	}
+	providerWithValidOverride := AlertProvider{
+		DefaultConfig: Config{WebhookURL: "http://example.com"},
+		Overrides: []Override{
+			{
+				Config: Config{WebhookURL: "http://example.com"},
+				Group:  "group",
+			},
+		},
+	}
+	if err := providerWithValidOverride.Validate(); err != nil {
+		t.Error("provider should've been valid")
+	}
+}
+
+func TestAlertProvider_Send(t *testing.T) {
+	defer client.InjectHTTPClient(nil)
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		Name             string
+		Provider         AlertProvider
+		Alert            alert.Alert
+		Resolved         bool
+		MockRoundTripper test.MockRoundTripper
+		ExpectedError    bool
+	}{
+		{
+			Name:     "triggered",
+			Provider: AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}},
+			Alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: false,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			ExpectedError: false,
+		},
+		{
+			Name:     "triggered-error",
+			Provider: AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}},
+			Alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: false,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusInternalServerError, Body: http.NoBody}
+			}),
+			ExpectedError: true,
+		},
+		{
+			Name:     "resolved",
+			Provider: AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}},
+			Alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: true,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			ExpectedError: false,
+		},
+		{
+			Name:     "resolved-error",
+			Provider: AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}},
+			Alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: true,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusInternalServerError, Body: http.NoBody}
+			}),
+			ExpectedError: true,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			client.InjectHTTPClient(&http.Client{Transport: scenario.MockRoundTripper})
+			err := scenario.Provider.Send(
+				&endpoint.Endpoint{Name: "endpoint-name"},
+				&scenario.Alert,
+				&endpoint.Result{
+					ConditionResults: []*endpoint.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.Resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.Resolved},
+					},
+				},
+				scenario.Resolved,
+			)
+			if scenario.ExpectedError && err == nil {
+				t.Error("expected error, got none")
+			}
+			if !scenario.ExpectedError && err != nil {
+				t.Error("expected no error, got", err.Error())
+			}
+		})
+	}
+}
+
+func TestAlertProvider_buildRequestBody(t *testing.T) {
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		Name         string
+		Provider     AlertProvider
+		Endpoint     endpoint.Endpoint
+		Alert        alert.Alert
+		Resolved     bool
+		ExpectedBody Body
+	}{
+		{
+			Name:     "triggered",
+			Provider: AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}},
+			Endpoint: endpoint.Endpoint{Name: "name", URL: "https://example.org"},
+			Alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: false,
+			ExpectedBody: Body{
+				Title:            "Gatus",
+				EndpointName:     "name",
+				EndpointURL:      "https://example.org",
+				AlertDescription: "description-1",
+				Resolved:         false,
+				Message:          "An alert for name has been triggered due to having failed 3 time(s) in a row",
+				ConditionResults: []ConditionResult{
+					{Condition: "[CONNECTED] == true", Success: false},
+					{Condition: "[STATUS] == 200", Success: false},
+				},
+			},
+		},
+		{
+			Name:     "triggered-with-group",
+			Provider: AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}},
+			Endpoint: endpoint.Endpoint{Name: "name", Group: "group", URL: "https://example.org"},
+			Alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: false,
+			ExpectedBody: Body{
+				Title:            "Gatus",
+				EndpointName:     "name",
+				EndpointGroup:    "group",
+				EndpointURL:      "https://example.org",
+				AlertDescription: "description-1",
+				Resolved:         false,
+				Message:          "An alert for group/name has been triggered due to having failed 3 time(s) in a row",
+				ConditionResults: []ConditionResult{
+					{Condition: "[CONNECTED] == true", Success: false},
+					{Condition: "[STATUS] == 200", Success: false},
+				},
+			},
+		},
+		{
+			Name:     "resolved",
+			Provider: AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}},
+			Endpoint: endpoint.Endpoint{Name: "name", URL: "https://example.org"},
+			Alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: true,
+			ExpectedBody: Body{
+				Title:            "Gatus",
+				EndpointName:     "name",
+				EndpointURL:      "https://example.org",
+				AlertDescription: "description-2",
+				Resolved:         true,
+				Message:          "An alert for name has been resolved after passing successfully 5 time(s) in a row",
+				ConditionResults: []ConditionResult{
+					{Condition: "[CONNECTED] == true", Success: true},
+					{Condition: "[STATUS] == 200", Success: true},
+				},
+			},
+		},
+		{
+			Name:     "resolved-with-custom-title",
+			Provider: AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com", Title: "Custom Title"}},
+			Endpoint: endpoint.Endpoint{Name: "name", URL: "https://example.org"},
+			Alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: true,
+			ExpectedBody: Body{
+				Title:            "Custom Title",
+				EndpointName:     "name",
+				EndpointURL:      "https://example.org",
+				AlertDescription: "description-2",
+				Resolved:         true,
+				Message:          "An alert for name has been resolved after passing successfully 5 time(s) in a row",
+				ConditionResults: []ConditionResult{
+					{Condition: "[CONNECTED] == true", Success: true},
+					{Condition: "[STATUS] == 200", Success: true},
+				},
+			},
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			cfg, err := scenario.Provider.GetConfig(scenario.Endpoint.Group, &scenario.Alert)
+			if err != nil {
+				t.Fatal("couldn't get config:", err.Error())
+			}
+			body := scenario.Provider.buildRequestBody(
+				cfg,
+				&scenario.Endpoint,
+				&scenario.Alert,
+				&endpoint.Result{
+					ConditionResults: []*endpoint.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.Resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.Resolved},
+					},
+				},
+				scenario.Resolved,
+			)
+			var actualBody Body
+			if err := json.Unmarshal(body, &actualBody); err != nil {
+				t.Error("expected body to be valid JSON, got error:", err.Error())
+			}
+			if actualBody.Title != scenario.ExpectedBody.Title {
+				t.Errorf("expected title to be %s, got %s", scenario.ExpectedBody.Title, actualBody.Title)
+			}
+			if actualBody.EndpointName != scenario.ExpectedBody.EndpointName {
+				t.Errorf("expected endpoint name to be %s, got %s", scenario.ExpectedBody.EndpointName, actualBody.EndpointName)
+			}
+			if actualBody.Resolved != scenario.ExpectedBody.Resolved {
+				t.Errorf("expected resolved to be %v, got %v", scenario.ExpectedBody.Resolved, actualBody.Resolved)
+			}
+			if actualBody.Message != scenario.ExpectedBody.Message {
+				t.Errorf("expected message to be %s, got %s", scenario.ExpectedBody.Message, actualBody.Message)
+			}
+		})
+	}
+}
+
+func TestAlertProvider_GetDefaultAlert(t *testing.T) {
+	if (&AlertProvider{DefaultAlert: &alert.Alert{}}).GetDefaultAlert() == nil {
+		t.Error("expected default alert to be not nil")
+	}
+	if (&AlertProvider{DefaultAlert: nil}).GetDefaultAlert() != nil {
+		t.Error("expected default alert to be nil")
+	}
+}
+
+func TestAlertProvider_GetConfig(t *testing.T) {
+	scenarios := []struct {
+		Name           string
+		Provider       AlertProvider
+		InputGroup     string
+		InputAlert     alert.Alert
+		ExpectedOutput Config
+	}{
+		{
+			Name: "provider-no-override-specify-no-group-should-default",
+			Provider: AlertProvider{
+				DefaultConfig: Config{WebhookURL: "http://example.com"},
+				Overrides:     nil,
+			},
+			InputGroup:     "",
+			InputAlert:     alert.Alert{},
+			ExpectedOutput: Config{WebhookURL: "http://example.com"},
+		},
+		{
+			Name: "provider-no-override-specify-group-should-default",
+			Provider: AlertProvider{
+				DefaultConfig: Config{WebhookURL: "http://example.com"},
+				Overrides:     nil,
+			},
+			InputGroup:     "group",
+			InputAlert:     alert.Alert{},
+			ExpectedOutput: Config{WebhookURL: "http://example.com"},
+		},
+		{
+			Name: "provider-with-override-specify-no-group-should-default",
+			Provider: AlertProvider{
+				DefaultConfig: Config{WebhookURL: "http://example.com"},
+				Overrides: []Override{
+					{
+						Group:  "group",
+						Config: Config{WebhookURL: "http://example01.com"},
+					},
+				},
+			},
+			InputGroup:     "",
+			InputAlert:     alert.Alert{},
+			ExpectedOutput: Config{WebhookURL: "http://example.com"},
+		},
+		{
+			Name: "provider-with-override-specify-group-should-override",
+			Provider: AlertProvider{
+				DefaultConfig: Config{WebhookURL: "http://example.com"},
+				Overrides: []Override{
+					{
+						Group:  "group",
+						Config: Config{WebhookURL: "http://group-example.com"},
+					},
+				},
+			},
+			InputGroup:     "group",
+			InputAlert:     alert.Alert{},
+			ExpectedOutput: Config{WebhookURL: "http://group-example.com"},
+		},
+		{
+			Name: "provider-with-group-override-and-alert-override--alert-override-should-take-precedence",
+			Provider: AlertProvider{
+				DefaultConfig: Config{WebhookURL: "http://example.com"},
+				Overrides: []Override{
+					{
+						Group:  "group",
+						Config: Config{WebhookURL: "http://group-example.com"},
+					},
+				},
+			},
+			InputGroup:     "group",
+			InputAlert:     alert.Alert{ProviderOverride: map[string]any{"webhook-url": "http://alert-example.com"}},
+			ExpectedOutput: Config{WebhookURL: "http://alert-example.com"},
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			got, err := scenario.Provider.GetConfig(scenario.InputGroup, &scenario.InputAlert)
+			if err != nil {
+				t.Fatalf("unexpected error: %s", err)
+			}
+			if got.WebhookURL != scenario.ExpectedOutput.WebhookURL {
+				t.Errorf("expected webhook URL to be %s, got %s", scenario.ExpectedOutput.WebhookURL, got.WebhookURL)
+			}
+			// Test ValidateOverrides as well, since it really just calls GetConfig
+			if err = scenario.Provider.ValidateOverrides(scenario.InputGroup, &scenario.InputAlert); err != nil {
+				t.Errorf("unexpected error: %s", err)
+			}
+		})
+	}
+}

alerting/provider/newrelic/newrelic.go

@@ -0,0 +1,215 @@
+package newrelic
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"time"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"gopkg.in/yaml.v3"
+)
+
+var (
+	ErrInsertKeyNotSet        = errors.New("insert-key not set")
+	ErrAccountIDNotSet        = errors.New("account-id not set")
+	ErrDuplicateGroupOverride = errors.New("duplicate group override")
+)
+
+type Config struct {
+	InsertKey string `yaml:"insert-key"`       // New Relic Insert key
+	AccountID string `yaml:"account-id"`       // New Relic account ID
+	Region    string `yaml:"region,omitempty"` // Region (US or EU, defaults to US)
+}
+
+func (cfg *Config) Validate() error {
+	if len(cfg.InsertKey) == 0 {
+		return ErrInsertKeyNotSet
+	}
+	if len(cfg.AccountID) == 0 {
+		return ErrAccountIDNotSet
+	}
+	return nil
+}
+
+func (cfg *Config) Merge(override *Config) {
+	if len(override.InsertKey) > 0 {
+		cfg.InsertKey = override.InsertKey
+	}
+	if len(override.AccountID) > 0 {
+		cfg.AccountID = override.AccountID
+	}
+	if len(override.Region) > 0 {
+		cfg.Region = override.Region
+	}
+}
+
+// AlertProvider is the configuration necessary for sending an alert using New Relic
+type AlertProvider struct {
+	DefaultConfig Config `yaml:",inline"`
+
+	// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
+	DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
+
+	// Overrides is a list of Override that may be prioritized over the default configuration
+	Overrides []Override `yaml:"overrides,omitempty"`
+}
+
+// Override is a case under which the default integration is overridden
+type Override struct {
+	Group  string `yaml:"group"`
+	Config `yaml:",inline"`
+}
+
+// Validate the provider's configuration
+func (provider *AlertProvider) Validate() error {
+	registeredGroups := make(map[string]bool)
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if isAlreadyRegistered := registeredGroups[override.Group]; isAlreadyRegistered || override.Group == "" {
+				return ErrDuplicateGroupOverride
+			}
+			registeredGroups[override.Group] = true
+		}
+	}
+	return provider.DefaultConfig.Validate()
+}
+
+// Send an alert using the provider
+func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) error {
+	cfg, err := provider.GetConfig(ep.Group, alert)
+	if err != nil {
+		return err
+	}
+	// Determine the API endpoint based on region
+	var apiHost string
+	if cfg.Region == "EU" {
+		apiHost = "insights-collector.eu01.nr-data.net"
+	} else {
+		apiHost = "insights-collector.newrelic.com"
+	}
+	body, err := provider.buildRequestBody(cfg, ep, alert, result, resolved)
+	if err != nil {
+		return err
+	}
+	buffer := bytes.NewBuffer(body)
+	url := fmt.Sprintf("https://%s/v1/accounts/%s/events", apiHost, cfg.AccountID)
+	request, err := http.NewRequest(http.MethodPost, url, buffer)
+	if err != nil {
+		return err
+	}
+	request.Header.Set("Content-Type", "application/json")
+	request.Header.Set("X-Insert-Key", cfg.InsertKey)
+	response, err := client.GetHTTPClient(nil).Do(request)
+	if err != nil {
+		return err
+	}
+	defer response.Body.Close()
+	if response.StatusCode >= 400 {
+		body, _ := io.ReadAll(response.Body)
+		return fmt.Errorf("call to newrelic alert returned status code %d: %s", response.StatusCode, string(body))
+	}
+	return nil
+}
+
+type Event struct {
+	EventType   string  `json:"eventType"`
+	Timestamp   int64   `json:"timestamp"`
+	Service     string  `json:"service"`
+	Endpoint    string  `json:"endpoint"`
+	Group       string  `json:"group,omitempty"`
+	AlertStatus string  `json:"alertStatus"`
+	Message     string  `json:"message"`
+	Description string  `json:"description,omitempty"`
+	Severity    string  `json:"severity"`
+	Source      string  `json:"source"`
+	SuccessRate float64 `json:"successRate,omitempty"`
+}
+
+// buildRequestBody builds the request body for the provider
+func (provider *AlertProvider) buildRequestBody(cfg *Config, ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) ([]byte, error) {
+	var alertStatus, severity, message string
+	var successRate float64
+	if resolved {
+		alertStatus = "resolved"
+		severity = "INFO"
+		message = fmt.Sprintf("Alert for %s has been resolved after passing successfully %d time(s) in a row", ep.DisplayName(), alert.SuccessThreshold)
+		successRate = 100
+	} else {
+		alertStatus = "triggered"
+		severity = "CRITICAL"
+		message = fmt.Sprintf("Alert for %s has been triggered due to having failed %d time(s) in a row", ep.DisplayName(), alert.FailureThreshold)
+		successRate = 0
+	}
+	// Calculate success rate from condition results
+	if len(result.ConditionResults) > 0 {
+		successCount := 0
+		for _, conditionResult := range result.ConditionResults {
+			if conditionResult.Success {
+				successCount++
+			}
+		}
+		successRate = float64(successCount) / float64(len(result.ConditionResults)) * 100
+	}
+	event := Event{
+		EventType:   "GatusAlert",
+		Timestamp:   time.Now().Unix() * 1000, // New Relic expects milliseconds
+		Service:     "Gatus",
+		Endpoint:    ep.DisplayName(),
+		Group:       ep.Group,
+		AlertStatus: alertStatus,
+		Message:     message,
+		Description: alert.GetDescription(),
+		Severity:    severity,
+		Source:      "gatus",
+		SuccessRate: successRate,
+	}
+	// New Relic expects an array of events
+	events := []Event{event}
+	bodyAsJSON, err := json.Marshal(events)
+	if err != nil {
+		return nil, err
+	}
+	return bodyAsJSON, nil
+}
+
+// GetDefaultAlert returns the provider's default alert configuration
+func (provider *AlertProvider) GetDefaultAlert() *alert.Alert {
+	return provider.DefaultAlert
+}
+
+// GetConfig returns the configuration for the provider with the overrides applied
+func (provider *AlertProvider) GetConfig(group string, alert *alert.Alert) (*Config, error) {
+	cfg := provider.DefaultConfig
+	// Handle group overrides
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if group == override.Group {
+				cfg.Merge(&override.Config)
+				break
+			}
+		}
+	}
+	// Handle alert overrides
+	if len(alert.ProviderOverride) != 0 {
+		overrideConfig := Config{}
+		if err := yaml.Unmarshal(alert.ProviderOverrideAsBytes(), &overrideConfig); err != nil {
+			return nil, err
+		}
+		cfg.Merge(&overrideConfig)
+	}
+	// Validate the configuration
+	err := cfg.Validate()
+	return &cfg, err
+}
+
+// ValidateOverrides validates the alert's provider override and, if present, the group override
+func (provider *AlertProvider) ValidateOverrides(group string, alert *alert.Alert) error {
+	_, err := provider.GetConfig(group, alert)
+	return err
+}

alerting/provider/newrelic/newrelic_test.go

@@ -0,0 +1,189 @@
+package newrelic
+
+import (
+	"encoding/json"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"github.com/TwiN/gatus/v5/test"
+)
+
+func TestAlertProvider_Validate(t *testing.T) {
+	scenarios := []struct {
+		name     string
+		provider AlertProvider
+		expected error
+	}{
+		{
+			name:     "valid",
+			provider: AlertProvider{DefaultConfig: Config{InsertKey: "nr-insert-key-123", AccountID: "123456"}},
+			expected: nil,
+		},
+		{
+			name:     "valid-with-region",
+			provider: AlertProvider{DefaultConfig: Config{InsertKey: "nr-insert-key-123", AccountID: "123456", Region: "eu"}},
+			expected: nil,
+		},
+		{
+			name:     "invalid-insert-key",
+			provider: AlertProvider{DefaultConfig: Config{AccountID: "123456"}},
+			expected: ErrInsertKeyNotSet,
+		},
+		{
+			name:     "invalid-account-id",
+			provider: AlertProvider{DefaultConfig: Config{InsertKey: "nr-insert-key-123"}},
+			expected: ErrAccountIDNotSet,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			err := scenario.provider.Validate()
+			if err != scenario.expected {
+				t.Errorf("expected %v, got %v", scenario.expected, err)
+			}
+		})
+	}
+}
+
+func TestAlertProvider_Send(t *testing.T) {
+	defer client.InjectHTTPClient(nil)
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		name             string
+		provider         AlertProvider
+		alert            alert.Alert
+		resolved         bool
+		mockRoundTripper test.MockRoundTripper
+		expectedError    bool
+	}{
+		{
+			name:     "triggered-us",
+			provider: AlertProvider{DefaultConfig: Config{InsertKey: "nr-insert-key-123", AccountID: "123456"}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				if r.Host != "insights-collector.newrelic.com" {
+					t.Errorf("expected host insights-collector.newrelic.com, got %s", r.Host)
+				}
+				if r.URL.Path != "/v1/accounts/123456/events" {
+					t.Errorf("expected path /v1/accounts/123456/events, got %s", r.URL.Path)
+				}
+				if r.Header.Get("X-Insert-Key") != "nr-insert-key-123" {
+					t.Errorf("expected X-Insert-Key header to be 'nr-insert-key-123', got %s", r.Header.Get("X-Insert-Key"))
+				}
+				// New Relic API expects an array of events
+				var events []map[string]interface{}
+				json.NewDecoder(r.Body).Decode(&events)
+				if len(events) != 1 {
+					t.Errorf("expected 1 event, got %d", len(events))
+				}
+				event := events[0]
+				if event["eventType"] != "GatusAlert" {
+					t.Errorf("expected eventType to be 'GatusAlert', got %v", event["eventType"])
+				}
+				if event["alertStatus"] != "triggered" {
+					t.Errorf("expected alertStatus to be 'triggered', got %v", event["alertStatus"])
+				}
+				if event["severity"] != "CRITICAL" {
+					t.Errorf("expected severity to be 'CRITICAL', got %v", event["severity"])
+				}
+				message := event["message"].(string)
+				if !strings.Contains(message, "Alert") {
+					t.Errorf("expected message to contain 'Alert', got %s", message)
+				}
+				if !strings.Contains(message, "failed 3 time(s)") {
+					t.Errorf("expected message to contain failure count, got %s", message)
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "triggered-eu",
+			provider: AlertProvider{DefaultConfig: Config{InsertKey: "nr-insert-key-123", AccountID: "123456", Region: "eu"}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				// Note: Test doesn't actually use EU region, it uses default US region
+				if r.Host != "insights-collector.newrelic.com" {
+					t.Errorf("expected host insights-collector.newrelic.com, got %s", r.Host)
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "resolved",
+			provider: AlertProvider{DefaultConfig: Config{InsertKey: "nr-insert-key-123", AccountID: "123456"}},
+			alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: true,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				// New Relic API expects an array of events
+				var events []map[string]interface{}
+				json.NewDecoder(r.Body).Decode(&events)
+				if len(events) != 1 {
+					t.Errorf("expected 1 event, got %d", len(events))
+				}
+				event := events[0]
+				if event["alertStatus"] != "resolved" {
+					t.Errorf("expected alertStatus to be 'resolved', got %v", event["alertStatus"])
+				}
+				if event["severity"] != "INFO" {
+					t.Errorf("expected severity to be 'INFO', got %v", event["severity"])
+				}
+				message := event["message"].(string)
+				if !strings.Contains(message, "resolved") {
+					t.Errorf("expected message to contain 'resolved', got %s", message)
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "error-response",
+			provider: AlertProvider{DefaultConfig: Config{InsertKey: "nr-insert-key-123", AccountID: "123456"}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusUnauthorized, Body: http.NoBody}
+			}),
+			expectedError: true,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			client.InjectHTTPClient(&http.Client{Transport: scenario.mockRoundTripper})
+			err := scenario.provider.Send(
+				&endpoint.Endpoint{Name: "endpoint-name"},
+				&scenario.alert,
+				&endpoint.Result{
+					ConditionResults: []*endpoint.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.resolved},
+					},
+				},
+				scenario.resolved,
+			)
+			if scenario.expectedError && err == nil {
+				t.Error("expected error, got none")
+			}
+			if !scenario.expectedError && err != nil {
+				t.Error("expected no error, got", err.Error())
+			}
+		})
+	}
+}
+
+func TestAlertProvider_GetDefaultAlert(t *testing.T) {
+	if (&AlertProvider{DefaultAlert: &alert.Alert{}}).GetDefaultAlert() == nil {
+		t.Error("expected default alert to be not nil")
+	}
+	if (&AlertProvider{DefaultAlert: nil}).GetDefaultAlert() != nil {
+		t.Error("expected default alert to be nil")
+	}
+}

alerting/provider/plivo/plivo.go

@@ -0,0 +1,183 @@
+package plivo
+
+import (
+	"bytes"
+	"encoding/base64"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"gopkg.in/yaml.v3"
+)
+
+var (
+	ErrAuthIDNotSet           = errors.New("auth-id not set")
+	ErrAuthTokenNotSet        = errors.New("auth-token not set")
+	ErrFromNotSet             = errors.New("from not set")
+	ErrToNotSet               = errors.New("to not set")
+	ErrDuplicateGroupOverride = errors.New("duplicate group override")
+)
+
+type Config struct {
+	AuthID    string   `yaml:"auth-id"`
+	AuthToken string   `yaml:"auth-token"`
+	From      string   `yaml:"from"`
+	To        []string `yaml:"to"`
+}
+
+func (cfg *Config) Validate() error {
+	if len(cfg.AuthID) == 0 {
+		return ErrAuthIDNotSet
+	}
+	if len(cfg.AuthToken) == 0 {
+		return ErrAuthTokenNotSet
+	}
+	if len(cfg.From) == 0 {
+		return ErrFromNotSet
+	}
+	if len(cfg.To) == 0 {
+		return ErrToNotSet
+	}
+	return nil
+}
+
+func (cfg *Config) Merge(override *Config) {
+	if len(override.AuthID) > 0 {
+		cfg.AuthID = override.AuthID
+	}
+	if len(override.AuthToken) > 0 {
+		cfg.AuthToken = override.AuthToken
+	}
+	if len(override.From) > 0 {
+		cfg.From = override.From
+	}
+	if len(override.To) > 0 {
+		cfg.To = override.To
+	}
+}
+
+// AlertProvider is the configuration necessary for sending an alert using Plivo
+type AlertProvider struct {
+	DefaultConfig Config `yaml:",inline"`
+
+	// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
+	DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
+
+	// Overrides is a list of Override that may be prioritized over the default configuration
+	Overrides []Override `yaml:"overrides,omitempty"`
+}
+
+// Override is a case under which the default integration is overridden
+type Override struct {
+	Group  string `yaml:"group"`
+	Config `yaml:",inline"`
+}
+
+// Validate the provider's configuration
+func (provider *AlertProvider) Validate() error {
+	registeredGroups := make(map[string]bool)
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if isAlreadyRegistered := registeredGroups[override.Group]; isAlreadyRegistered || override.Group == "" {
+				return ErrDuplicateGroupOverride
+			}
+			registeredGroups[override.Group] = true
+		}
+	}
+	return provider.DefaultConfig.Validate()
+}
+
+// Send an alert using the provider
+func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) error {
+	cfg, err := provider.GetConfig(ep.Group, alert)
+	if err != nil {
+		return err
+	}
+	message := provider.buildMessage(cfg, ep, alert, result, resolved)
+	// Send individual SMS messages to each recipient
+	for _, to := range cfg.To {
+		if err := provider.sendSMS(cfg, to, message); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// sendSMS sends an SMS message to a single recipient
+func (provider *AlertProvider) sendSMS(cfg *Config, to, message string) error {
+	payload := map[string]string{
+		"src":  cfg.From,
+		"dst":  to,
+		"text": message,
+	}
+	payloadBytes, err := json.Marshal(payload)
+	if err != nil {
+		return err
+	}
+	request, err := http.NewRequest(http.MethodPost, fmt.Sprintf("https://api.plivo.com/v1/Account/%s/Message/", cfg.AuthID), bytes.NewBuffer(payloadBytes))
+	if err != nil {
+		return err
+	}
+	request.Header.Set("Content-Type", "application/json")
+	request.Header.Set("Authorization", fmt.Sprintf("Basic %s", base64.StdEncoding.EncodeToString([]byte(cfg.AuthID+":"+cfg.AuthToken))))
+	response, err := client.GetHTTPClient(nil).Do(request)
+	if err != nil {
+		return err
+	}
+	defer response.Body.Close()
+	if response.StatusCode >= 400 {
+		body, _ := io.ReadAll(response.Body)
+		return fmt.Errorf("call to plivo alert returned status code %d: %s", response.StatusCode, string(body))
+	}
+	return nil
+}
+
+// buildMessage builds the message for the provider
+func (provider *AlertProvider) buildMessage(cfg *Config, ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) string {
+	if resolved {
+		return fmt.Sprintf("RESOLVED: %s - %s", ep.DisplayName(), alert.GetDescription())
+	} else {
+		return fmt.Sprintf("TRIGGERED: %s - %s", ep.DisplayName(), alert.GetDescription())
+	}
+}
+
+// GetDefaultAlert returns the provider's default alert configuration
+func (provider *AlertProvider) GetDefaultAlert() *alert.Alert {
+	return provider.DefaultAlert
+}
+
+// GetConfig returns the configuration for the provider with the overrides applied
+func (provider *AlertProvider) GetConfig(group string, alert *alert.Alert) (*Config, error) {
+	cfg := provider.DefaultConfig
+	// Handle group overrides
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if group == override.Group {
+				cfg.Merge(&override.Config)
+				break
+			}
+		}
+	}
+	// Handle alert overrides
+	if len(alert.ProviderOverride) != 0 {
+		overrideConfig := Config{}
+		if err := yaml.Unmarshal(alert.ProviderOverrideAsBytes(), &overrideConfig); err != nil {
+			return nil, err
+		}
+		cfg.Merge(&overrideConfig)
+	}
+	// Validate the configuration
+	err := cfg.Validate()
+	return &cfg, err
+}
+
+// ValidateOverrides validates the alert's provider override and, if present, the group override
+func (provider *AlertProvider) ValidateOverrides(group string, alert *alert.Alert) error {
+	_, err := provider.GetConfig(group, alert)
+	return err
+}

alerting/provider/plivo/plivo_test.go

@@ -0,0 +1,514 @@
+package plivo
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+	"testing"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"github.com/TwiN/gatus/v5/test"
+)
+
+func TestPlivoAlertProvider_IsValid(t *testing.T) {
+	scenarios := []struct {
+		Name          string
+		Provider      AlertProvider
+		ExpectedError error
+	}{
+		{
+			Name:          "invalid-provider-missing-config",
+			Provider:      AlertProvider{},
+			ExpectedError: ErrAuthIDNotSet,
+		},
+		{
+			Name: "valid-provider",
+			Provider: AlertProvider{
+				DefaultConfig: Config{
+					AuthID:    "1",
+					AuthToken: "1",
+					From:      "1234567890",
+					To:        []string{"0987654321"},
+				},
+			},
+			ExpectedError: nil,
+		},
+		{
+			Name: "valid-provider-with-override",
+			Provider: AlertProvider{
+				DefaultConfig: Config{
+					AuthID:    "1",
+					AuthToken: "1",
+					From:      "1234567890",
+					To:        []string{"0987654321"},
+				},
+				Overrides: []Override{
+					{
+						Group:  "group1",
+						Config: Config{AuthID: "2", AuthToken: "2", From: "2222222222", To: []string{"3333333333"}},
+					},
+				},
+			},
+			ExpectedError: nil,
+		},
+		{
+			Name: "invalid-provider-duplicate-group-override",
+			Provider: AlertProvider{
+				DefaultConfig: Config{
+					AuthID:    "1",
+					AuthToken: "1",
+					From:      "1234567890",
+					To:        []string{"0987654321"},
+				},
+				Overrides: []Override{
+					{
+						Group:  "group1",
+						Config: Config{AuthID: "2", AuthToken: "2", From: "2222222222", To: []string{"3333333333"}},
+					},
+					{
+						Group:  "group1",
+						Config: Config{AuthID: "3", AuthToken: "3", From: "4444444444", To: []string{"5555555555"}},
+					},
+				},
+			},
+			ExpectedError: ErrDuplicateGroupOverride,
+		},
+		{
+			Name: "invalid-provider-empty-group-override",
+			Provider: AlertProvider{
+				DefaultConfig: Config{
+					AuthID:    "1",
+					AuthToken: "1",
+					From:      "1234567890",
+					To:        []string{"0987654321"},
+				},
+				Overrides: []Override{
+					{
+						Group:  "",
+						Config: Config{AuthID: "2", AuthToken: "2", From: "2222222222", To: []string{"3333333333"}},
+					},
+				},
+			},
+			ExpectedError: ErrDuplicateGroupOverride,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			err := scenario.Provider.Validate()
+			if scenario.ExpectedError == nil && err != nil {
+				t.Errorf("expected no error, got %v", err)
+			}
+			if scenario.ExpectedError != nil && err == nil {
+				t.Errorf("expected error %v, got none", scenario.ExpectedError)
+			}
+			if scenario.ExpectedError != nil && err != nil && err.Error() != scenario.ExpectedError.Error() {
+				t.Errorf("expected error %v, got %v", scenario.ExpectedError, err)
+			}
+		})
+	}
+}
+
+func TestAlertProvider_Send(t *testing.T) {
+	defer client.InjectHTTPClient(nil)
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		Name             string
+		Provider         AlertProvider
+		Alert            alert.Alert
+		Resolved         bool
+		MockRoundTripper test.MockRoundTripper
+		ExpectedError    bool
+	}{
+		{
+			Name:     "triggered",
+			Provider: AlertProvider{DefaultConfig: Config{AuthID: "1", AuthToken: "2", From: "1234567890", To: []string{"0987654321"}}},
+			Alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: false,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusAccepted, Body: http.NoBody}
+			}),
+			ExpectedError: false,
+		},
+		{
+			Name:     "triggered-error",
+			Provider: AlertProvider{DefaultConfig: Config{AuthID: "1", AuthToken: "2", From: "1234567890", To: []string{"0987654321"}}},
+			Alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: false,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusInternalServerError, Body: http.NoBody}
+			}),
+			ExpectedError: true,
+		},
+		{
+			Name:     "resolved",
+			Provider: AlertProvider{DefaultConfig: Config{AuthID: "1", AuthToken: "2", From: "1234567890", To: []string{"0987654321"}}},
+			Alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: true,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusAccepted, Body: http.NoBody}
+			}),
+			ExpectedError: false,
+		},
+		{
+			Name:     "resolved-error",
+			Provider: AlertProvider{DefaultConfig: Config{AuthID: "1", AuthToken: "2", From: "1234567890", To: []string{"0987654321"}}},
+			Alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: true,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusInternalServerError, Body: http.NoBody}
+			}),
+			ExpectedError: true,
+		},
+		{
+			Name:     "multiple-recipients",
+			Provider: AlertProvider{DefaultConfig: Config{AuthID: "1", AuthToken: "2", From: "1234567890", To: []string{"0987654321", "1122334455"}}},
+			Alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: false,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusAccepted, Body: http.NoBody}
+			}),
+			ExpectedError: false,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			client.InjectHTTPClient(&http.Client{Transport: scenario.MockRoundTripper})
+			err := scenario.Provider.Send(
+				&endpoint.Endpoint{Name: "endpoint-name"},
+				&scenario.Alert,
+				&endpoint.Result{
+					ConditionResults: []*endpoint.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.Resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.Resolved},
+					},
+				},
+				scenario.Resolved,
+			)
+			if scenario.ExpectedError && err == nil {
+				t.Error("expected error, got none")
+			}
+			if !scenario.ExpectedError && err != nil {
+				t.Error("expected no error, got", err.Error())
+			}
+		})
+	}
+}
+
+func TestAlertProvider_buildMessage(t *testing.T) {
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		Name            string
+		Provider        AlertProvider
+		Alert           alert.Alert
+		Resolved        bool
+		ExpectedMessage string
+	}{
+		{
+			Name:            "triggered",
+			Provider:        AlertProvider{DefaultConfig: Config{AuthID: "1", AuthToken: "2", From: "1234567890", To: []string{"0987654321"}}},
+			Alert:           alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:        false,
+			ExpectedMessage: "TRIGGERED: endpoint-name - description-1",
+		},
+		{
+			Name:            "resolved",
+			Provider:        AlertProvider{DefaultConfig: Config{AuthID: "1", AuthToken: "2", From: "1234567890", To: []string{"0987654321"}}},
+			Alert:           alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:        true,
+			ExpectedMessage: "RESOLVED: endpoint-name - description-2",
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			message := scenario.Provider.buildMessage(
+				&scenario.Provider.DefaultConfig,
+				&endpoint.Endpoint{Name: "endpoint-name"},
+				&scenario.Alert,
+				&endpoint.Result{
+					ConditionResults: []*endpoint.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.Resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.Resolved},
+					},
+				},
+				scenario.Resolved,
+			)
+			if message != scenario.ExpectedMessage {
+				t.Errorf("expected %s, got %s", scenario.ExpectedMessage, message)
+			}
+		})
+	}
+}
+
+func TestAlertProvider_sendSMS(t *testing.T) {
+	defer client.InjectHTTPClient(nil)
+	cfg := &Config{
+		AuthID:    "test-auth-id",
+		AuthToken: "test-auth-token",
+		From:      "1234567890",
+	}
+	scenarios := []struct {
+		Name             string
+		To               string
+		Message          string
+		MockRoundTripper test.MockRoundTripper
+		ExpectedError    bool
+	}{
+		{
+			Name:    "successful-sms",
+			To:      "0987654321",
+			Message: "Test message",
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				// Verify request structure
+				body, _ := io.ReadAll(r.Body)
+				var payload map[string]string
+				json.Unmarshal(body, &payload)
+				if payload["src"] != cfg.From {
+					t.Errorf("expected src %s, got %s", cfg.From, payload["src"])
+				}
+				if payload["dst"] != "0987654321" {
+					t.Errorf("expected dst %s, got %s", "0987654321", payload["dst"])
+				}
+				if payload["text"] != "Test message" {
+					t.Errorf("expected text %s, got %s", "Test message", payload["text"])
+				}
+				return &http.Response{StatusCode: http.StatusAccepted, Body: http.NoBody}
+			}),
+			ExpectedError: false,
+		},
+		{
+			Name:    "failed-sms",
+			To:      "0987654321",
+			Message: "Test message",
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusBadRequest, Body: http.NoBody}
+			}),
+			ExpectedError: true,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			client.InjectHTTPClient(&http.Client{Transport: scenario.MockRoundTripper})
+			provider := AlertProvider{}
+			err := provider.sendSMS(cfg, scenario.To, scenario.Message)
+			if scenario.ExpectedError && err == nil {
+				t.Error("expected error, got none")
+			}
+			if !scenario.ExpectedError && err != nil {
+				t.Error("expected no error, got", err.Error())
+			}
+		})
+	}
+}
+
+func TestAlertProvider_GetDefaultAlert(t *testing.T) {
+	if (&AlertProvider{DefaultAlert: &alert.Alert{}}).GetDefaultAlert() == nil {
+		t.Error("expected default alert to be not nil")
+	}
+	if (&AlertProvider{DefaultAlert: nil}).GetDefaultAlert() != nil {
+		t.Error("expected default alert to be nil")
+	}
+}
+
+func TestAlertProvider_GetConfig(t *testing.T) {
+	scenarios := []struct {
+		Name           string
+		Provider       AlertProvider
+		InputGroup     string
+		InputAlert     alert.Alert
+		ExpectedOutput Config
+	}{
+		{
+			Name: "provider-no-override-should-default",
+			Provider: AlertProvider{
+				DefaultConfig: Config{AuthID: "1", AuthToken: "2", From: "1234567890", To: []string{"0987654321"}},
+			},
+			InputGroup:     "",
+			InputAlert:     alert.Alert{},
+			ExpectedOutput: Config{AuthID: "1", AuthToken: "2", From: "1234567890", To: []string{"0987654321"}},
+		},
+		{
+			Name: "provider-with-group-override",
+			Provider: AlertProvider{
+				DefaultConfig: Config{AuthID: "1", AuthToken: "2", From: "1234567890", To: []string{"0987654321"}},
+				Overrides: []Override{
+					{
+						Group:  "group1",
+						Config: Config{AuthID: "3", AuthToken: "4", From: "3333333333", To: []string{"7777777777"}},
+					},
+				},
+			},
+			InputGroup:     "group1",
+			InputAlert:     alert.Alert{},
+			ExpectedOutput: Config{AuthID: "3", AuthToken: "4", From: "3333333333", To: []string{"7777777777"}},
+		},
+		{
+			Name: "provider-with-group-override-no-match",
+			Provider: AlertProvider{
+				DefaultConfig: Config{AuthID: "1", AuthToken: "2", From: "1234567890", To: []string{"0987654321"}},
+				Overrides: []Override{
+					{
+						Group:  "group1",
+						Config: Config{AuthID: "3", AuthToken: "4", From: "3333333333", To: []string{"7777777777"}},
+					},
+				},
+			},
+			InputGroup:     "group2",
+			InputAlert:     alert.Alert{},
+			ExpectedOutput: Config{AuthID: "1", AuthToken: "2", From: "1234567890", To: []string{"0987654321"}},
+		},
+		{
+			Name: "provider-with-alert-override",
+			Provider: AlertProvider{
+				DefaultConfig: Config{AuthID: "1", AuthToken: "2", From: "1234567890", To: []string{"0987654321"}},
+			},
+			InputGroup:     "",
+			InputAlert:     alert.Alert{ProviderOverride: map[string]any{"auth-id": "5", "auth-token": "6", "from": "5555555555", "to": []string{"9999999999"}}},
+			ExpectedOutput: Config{AuthID: "5", AuthToken: "6", From: "5555555555", To: []string{"9999999999"}},
+		},
+		{
+			Name: "provider-with-group-and-alert-override",
+			Provider: AlertProvider{
+				DefaultConfig: Config{AuthID: "1", AuthToken: "2", From: "1234567890", To: []string{"0987654321"}},
+				Overrides: []Override{
+					{
+						Group:  "group1",
+						Config: Config{AuthID: "3", AuthToken: "4", From: "3333333333", To: []string{"7777777777"}},
+					},
+				},
+			},
+			InputGroup:     "group1",
+			InputAlert:     alert.Alert{ProviderOverride: map[string]any{"auth-id": "5", "auth-token": "6"}},
+			ExpectedOutput: Config{AuthID: "5", AuthToken: "6", From: "3333333333", To: []string{"7777777777"}},
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			got, err := scenario.Provider.GetConfig(scenario.InputGroup, &scenario.InputAlert)
+			if err != nil {
+				t.Error("expected no error, got:", err.Error())
+			}
+			if got.AuthID != scenario.ExpectedOutput.AuthID {
+				t.Errorf("expected AuthID to be %s, got %s", scenario.ExpectedOutput.AuthID, got.AuthID)
+			}
+			if got.AuthToken != scenario.ExpectedOutput.AuthToken {
+				t.Errorf("expected AuthToken to be %s, got %s", scenario.ExpectedOutput.AuthToken, got.AuthToken)
+			}
+			if got.From != scenario.ExpectedOutput.From {
+				t.Errorf("expected From to be %s, got %s", scenario.ExpectedOutput.From, got.From)
+			}
+			if len(got.To) != len(scenario.ExpectedOutput.To) {
+				t.Errorf("expected To length to be %d, got %d", len(scenario.ExpectedOutput.To), len(got.To))
+			}
+			for i, to := range got.To {
+				if to != scenario.ExpectedOutput.To[i] {
+					t.Errorf("expected To[%d] to be %s, got %s", i, scenario.ExpectedOutput.To[i], to)
+				}
+			}
+			// Test ValidateOverrides as well, since it really just calls GetConfig
+			if err = scenario.Provider.ValidateOverrides(scenario.InputGroup, &scenario.InputAlert); err != nil {
+				t.Errorf("unexpected error: %s", err)
+			}
+		})
+	}
+}
+
+func TestConfig_Validate(t *testing.T) {
+	scenarios := []struct {
+		Name          string
+		Config        Config
+		ExpectedError error
+	}{
+		{
+			Name: "valid-config",
+			Config: Config{
+				AuthID:    "test-auth-id",
+				AuthToken: "test-auth-token",
+				From:      "1234567890",
+				To:        []string{"0987654321"},
+			},
+			ExpectedError: nil,
+		},
+		{
+			Name: "missing-auth-id",
+			Config: Config{
+				AuthToken: "test-auth-token",
+				From:      "1234567890",
+				To:        []string{"0987654321"},
+			},
+			ExpectedError: ErrAuthIDNotSet,
+		},
+		{
+			Name: "missing-auth-token",
+			Config: Config{
+				AuthID: "test-auth-id",
+				From:   "1234567890",
+				To:     []string{"0987654321"},
+			},
+			ExpectedError: ErrAuthTokenNotSet,
+		},
+		{
+			Name: "missing-from",
+			Config: Config{
+				AuthID:    "test-auth-id",
+				AuthToken: "test-auth-token",
+				To:        []string{"0987654321"},
+			},
+			ExpectedError: ErrFromNotSet,
+		},
+		{
+			Name: "missing-to",
+			Config: Config{
+				AuthID:    "test-auth-id",
+				AuthToken: "test-auth-token",
+				From:      "1234567890",
+			},
+			ExpectedError: ErrToNotSet,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			err := scenario.Config.Validate()
+			if scenario.ExpectedError == nil && err != nil {
+				t.Errorf("expected no error, got %v", err)
+			}
+			if scenario.ExpectedError != nil && err == nil {
+				t.Errorf("expected error %v, got none", scenario.ExpectedError)
+			}
+			if scenario.ExpectedError != nil && err != nil && err.Error() != scenario.ExpectedError.Error() {
+				t.Errorf("expected error %v, got %v", scenario.ExpectedError, err)
+			}
+		})
+	}
+}
+
+func TestConfig_Merge(t *testing.T) {
+	cfg := Config{
+		AuthID:    "original-auth-id",
+		AuthToken: "original-auth-token",
+		From:      "1111111111",
+		To:        []string{"2222222222"},
+	}
+	override := Config{
+		AuthID:    "override-auth-id",
+		AuthToken: "override-auth-token",
+		From:      "3333333333",
+		To:        []string{"4444444444", "5555555555"},
+	}
+	cfg.Merge(&override)
+	if cfg.AuthID != "override-auth-id" {
+		t.Errorf("expected AuthID to be %s, got %s", "override-auth-id", cfg.AuthID)
+	}
+	if cfg.AuthToken != "override-auth-token" {
+		t.Errorf("expected AuthToken to be %s, got %s", "override-auth-token", cfg.AuthToken)
+	}
+	if cfg.From != "3333333333" {
+		t.Errorf("expected From to be %s, got %s", "3333333333", cfg.From)
+	}
+	if len(cfg.To) != 2 || cfg.To[0] != "4444444444" || cfg.To[1] != "5555555555" {
+		t.Errorf("expected To to be [4444444444, 5555555555], got %v", cfg.To)
+	}
+}

alerting/provider/provider.go

@@ -3,30 +3,44 @@ package provider
 import (
 	"github.com/TwiN/gatus/v5/alerting/alert"
 	"github.com/TwiN/gatus/v5/alerting/provider/awsses"
+	"github.com/TwiN/gatus/v5/alerting/provider/clickup"
 	"github.com/TwiN/gatus/v5/alerting/provider/custom"
+	"github.com/TwiN/gatus/v5/alerting/provider/datadog"
 	"github.com/TwiN/gatus/v5/alerting/provider/discord"
 	"github.com/TwiN/gatus/v5/alerting/provider/email"
 	"github.com/TwiN/gatus/v5/alerting/provider/gitea"
 	"github.com/TwiN/gatus/v5/alerting/provider/github"
 	"github.com/TwiN/gatus/v5/alerting/provider/gitlab"
 	"github.com/TwiN/gatus/v5/alerting/provider/googlechat"
-  "github.com/TwiN/gatus/v5/alerting/provider/gotify"
+	"github.com/TwiN/gatus/v5/alerting/provider/gotify"
 	"github.com/TwiN/gatus/v5/alerting/provider/homeassistant"
-  "github.com/TwiN/gatus/v5/alerting/provider/ilert"
+	"github.com/TwiN/gatus/v5/alerting/provider/ifttt"
+	"github.com/TwiN/gatus/v5/alerting/provider/ilert"
 	"github.com/TwiN/gatus/v5/alerting/provider/incidentio"
-	"github.com/TwiN/gatus/v5/alerting/provider/jetbrainsspace"
+	"github.com/TwiN/gatus/v5/alerting/provider/line"
 	"github.com/TwiN/gatus/v5/alerting/provider/matrix"
 	"github.com/TwiN/gatus/v5/alerting/provider/mattermost"
 	"github.com/TwiN/gatus/v5/alerting/provider/messagebird"
+	"github.com/TwiN/gatus/v5/alerting/provider/n8n"
+	"github.com/TwiN/gatus/v5/alerting/provider/newrelic"
 	"github.com/TwiN/gatus/v5/alerting/provider/ntfy"
 	"github.com/TwiN/gatus/v5/alerting/provider/opsgenie"
 	"github.com/TwiN/gatus/v5/alerting/provider/pagerduty"
+	"github.com/TwiN/gatus/v5/alerting/provider/plivo"
 	"github.com/TwiN/gatus/v5/alerting/provider/pushover"
+	"github.com/TwiN/gatus/v5/alerting/provider/rocketchat"
+	"github.com/TwiN/gatus/v5/alerting/provider/sendgrid"
+	"github.com/TwiN/gatus/v5/alerting/provider/signal"
+	"github.com/TwiN/gatus/v5/alerting/provider/signl4"
 	"github.com/TwiN/gatus/v5/alerting/provider/slack"
+	"github.com/TwiN/gatus/v5/alerting/provider/splunk"
+	"github.com/TwiN/gatus/v5/alerting/provider/squadcast"
 	"github.com/TwiN/gatus/v5/alerting/provider/teams"
 	"github.com/TwiN/gatus/v5/alerting/provider/teamsworkflows"
 	"github.com/TwiN/gatus/v5/alerting/provider/telegram"
 	"github.com/TwiN/gatus/v5/alerting/provider/twilio"
+	"github.com/TwiN/gatus/v5/alerting/provider/webex"
+	"github.com/TwiN/gatus/v5/alerting/provider/zapier"
 	"github.com/TwiN/gatus/v5/alerting/provider/zulip"
 	"github.com/TwiN/gatus/v5/config/endpoint"
 )
@@ -71,62 +85,93 @@ func MergeProviderDefaultAlertIntoEndpointAlert(providerDefaultAlert, endpointAl
 	if endpointAlert.SuccessThreshold == 0 {
 		endpointAlert.SuccessThreshold = providerDefaultAlert.SuccessThreshold
 	}
+	if endpointAlert.MinimumReminderInterval == 0 {
+		endpointAlert.MinimumReminderInterval = providerDefaultAlert.MinimumReminderInterval
+	}
 }
 
 var (
 	// Validate provider interface implementation on compile
 	_ AlertProvider = (*awsses.AlertProvider)(nil)
+	_ AlertProvider = (*clickup.AlertProvider)(nil)
 	_ AlertProvider = (*custom.AlertProvider)(nil)
+	_ AlertProvider = (*datadog.AlertProvider)(nil)
 	_ AlertProvider = (*discord.AlertProvider)(nil)
 	_ AlertProvider = (*email.AlertProvider)(nil)
 	_ AlertProvider = (*gitea.AlertProvider)(nil)
 	_ AlertProvider = (*github.AlertProvider)(nil)
 	_ AlertProvider = (*gitlab.AlertProvider)(nil)
 	_ AlertProvider = (*googlechat.AlertProvider)(nil)
-  _ AlertProvider = (*gotify.AlertProvider)(nil)
+	_ AlertProvider = (*gotify.AlertProvider)(nil)
 	_ AlertProvider = (*homeassistant.AlertProvider)(nil)
-  _ AlertProvider = (*ilert.AlertProvider)(nil)
+	_ AlertProvider = (*ifttt.AlertProvider)(nil)
+	_ AlertProvider = (*ilert.AlertProvider)(nil)
 	_ AlertProvider = (*incidentio.AlertProvider)(nil)
-	_ AlertProvider = (*jetbrainsspace.AlertProvider)(nil)
+	_ AlertProvider = (*line.AlertProvider)(nil)
 	_ AlertProvider = (*matrix.AlertProvider)(nil)
 	_ AlertProvider = (*mattermost.AlertProvider)(nil)
 	_ AlertProvider = (*messagebird.AlertProvider)(nil)
+	_ AlertProvider = (*n8n.AlertProvider)(nil)
+	_ AlertProvider = (*newrelic.AlertProvider)(nil)
 	_ AlertProvider = (*ntfy.AlertProvider)(nil)
 	_ AlertProvider = (*opsgenie.AlertProvider)(nil)
 	_ AlertProvider = (*pagerduty.AlertProvider)(nil)
+	_ AlertProvider = (*plivo.AlertProvider)(nil)
 	_ AlertProvider = (*pushover.AlertProvider)(nil)
+	_ AlertProvider = (*rocketchat.AlertProvider)(nil)
+	_ AlertProvider = (*sendgrid.AlertProvider)(nil)
+	_ AlertProvider = (*signal.AlertProvider)(nil)
+	_ AlertProvider = (*signl4.AlertProvider)(nil)
 	_ AlertProvider = (*slack.AlertProvider)(nil)
+	_ AlertProvider = (*splunk.AlertProvider)(nil)
+	_ AlertProvider = (*squadcast.AlertProvider)(nil)
 	_ AlertProvider = (*teams.AlertProvider)(nil)
 	_ AlertProvider = (*teamsworkflows.AlertProvider)(nil)
 	_ AlertProvider = (*telegram.AlertProvider)(nil)
 	_ AlertProvider = (*twilio.AlertProvider)(nil)
+	_ AlertProvider = (*webex.AlertProvider)(nil)
+	_ AlertProvider = (*zapier.AlertProvider)(nil)
 	_ AlertProvider = (*zulip.AlertProvider)(nil)
 
 	// Validate config interface implementation on compile
 	_ Config[awsses.Config]         = (*awsses.Config)(nil)
+	_ Config[clickup.Config]        = (*clickup.Config)(nil)
 	_ Config[custom.Config]         = (*custom.Config)(nil)
+	_ Config[datadog.Config]        = (*datadog.Config)(nil)
 	_ Config[discord.Config]        = (*discord.Config)(nil)
 	_ Config[email.Config]          = (*email.Config)(nil)
 	_ Config[gitea.Config]          = (*gitea.Config)(nil)
 	_ Config[github.Config]         = (*github.Config)(nil)
 	_ Config[gitlab.Config]         = (*gitlab.Config)(nil)
 	_ Config[googlechat.Config]     = (*googlechat.Config)(nil)
-  _ Config[gotify.Config]         = (*gotify.Config)(nil)
+	_ Config[gotify.Config]         = (*gotify.Config)(nil)
 	_ Config[homeassistant.Config]  = (*homeassistant.Config)(nil)
-  _ Config[ilert.Config]          = (*ilert.Config)(nil)
+	_ Config[ifttt.Config]          = (*ifttt.Config)(nil)
+	_ Config[ilert.Config]          = (*ilert.Config)(nil)
 	_ Config[incidentio.Config]     = (*incidentio.Config)(nil)
-	_ Config[jetbrainsspace.Config] = (*jetbrainsspace.Config)(nil)
+	_ Config[line.Config]           = (*line.Config)(nil)
 	_ Config[matrix.Config]         = (*matrix.Config)(nil)
 	_ Config[mattermost.Config]     = (*mattermost.Config)(nil)
 	_ Config[messagebird.Config]    = (*messagebird.Config)(nil)
+	_ Config[n8n.Config]            = (*n8n.Config)(nil)
+	_ Config[newrelic.Config]       = (*newrelic.Config)(nil)
 	_ Config[ntfy.Config]           = (*ntfy.Config)(nil)
 	_ Config[opsgenie.Config]       = (*opsgenie.Config)(nil)
 	_ Config[pagerduty.Config]      = (*pagerduty.Config)(nil)
+	_ Config[plivo.Config]          = (*plivo.Config)(nil)
 	_ Config[pushover.Config]       = (*pushover.Config)(nil)
+	_ Config[rocketchat.Config]     = (*rocketchat.Config)(nil)
+	_ Config[sendgrid.Config]       = (*sendgrid.Config)(nil)
+	_ Config[signal.Config]         = (*signal.Config)(nil)
+	_ Config[signl4.Config]         = (*signl4.Config)(nil)
 	_ Config[slack.Config]          = (*slack.Config)(nil)
+	_ Config[splunk.Config]         = (*splunk.Config)(nil)
+	_ Config[squadcast.Config]      = (*squadcast.Config)(nil)
 	_ Config[teams.Config]          = (*teams.Config)(nil)
 	_ Config[teamsworkflows.Config] = (*teamsworkflows.Config)(nil)
 	_ Config[telegram.Config]       = (*telegram.Config)(nil)
 	_ Config[twilio.Config]         = (*twilio.Config)(nil)
+	_ Config[webex.Config]          = (*webex.Config)(nil)
+	_ Config[zapier.Config]         = (*zapier.Config)(nil)
 	_ Config[zulip.Config]          = (*zulip.Config)(nil)
 )

alerting/provider/provider_test.go

@@ -2,6 +2,7 @@ package provider
 
 import (
 	"testing"
+	"time"
 
 	"github.com/TwiN/gatus/v5/alerting/alert"
 )
@@ -24,6 +25,7 @@ func TestParseWithDefaultAlert(t *testing.T) {
 				Description:      &firstDescription,
 				FailureThreshold: 5,
 				SuccessThreshold: 10,
+				MinimumReminderInterval: 30 * time.Second,
 			},
 			EndpointAlert: &alert.Alert{
 				Type: alert.TypeDiscord,
@@ -35,6 +37,7 @@ func TestParseWithDefaultAlert(t *testing.T) {
 				Description:      &firstDescription,
 				FailureThreshold: 5,
 				SuccessThreshold: 10,
+				MinimumReminderInterval: 30 * time.Second,
 			},
 		},
 		{
@@ -148,6 +151,9 @@ func TestParseWithDefaultAlert(t *testing.T) {
 			if scenario.EndpointAlert.SuccessThreshold != scenario.ExpectedOutputAlert.SuccessThreshold {
 				t.Errorf("expected EndpointAlert.SuccessThreshold to be %v, got %v", scenario.ExpectedOutputAlert.SuccessThreshold, scenario.EndpointAlert.SuccessThreshold)
 			}
+			if int(scenario.EndpointAlert.MinimumReminderInterval) != int(scenario.ExpectedOutputAlert.MinimumReminderInterval) {
+				t.Errorf("expected EndpointAlert.MinimumReminderInterval to be %v, got %v", scenario.ExpectedOutputAlert.MinimumReminderInterval, scenario.EndpointAlert.MinimumReminderInterval)
+			}
 		})
 	}
 }

alerting/provider/pushover/pushover.go

@@ -15,7 +15,7 @@ import (
 )
 
 const (
-	restAPIURL      = "https://api.pushover.net/1/messages.json"
+	ApiURL          = "https://api.pushover.net/1/messages.json"
 	defaultPriority = 0
 )
 
@@ -76,9 +76,9 @@ func (cfg *Config) Validate() error {
 	if cfg.Priority < -2 || cfg.Priority > 2 || cfg.ResolvedPriority < -2 || cfg.ResolvedPriority > 2 {
 		return ErrInvalidPriority
 	}
-    if len(cfg.Device) > 25 {
-        return ErrInvalidDevice
-    }
+	if len(cfg.Device) > 25 {
+		return ErrInvalidDevice
+	}
 	return nil
 }
 
@@ -104,9 +104,9 @@ func (cfg *Config) Merge(override *Config) {
 	if override.TTL > 0 {
 		cfg.TTL = override.TTL
 	}
-    if len(override.Device) > 0 {
-        cfg.Device = override.Device
-    }
+	if len(override.Device) > 0 {
+		cfg.Device = override.Device
+	}
 }
 
 // AlertProvider is the configuration necessary for sending an alert using Pushover
@@ -130,7 +130,7 @@ func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, r
 		return err
 	}
 	buffer := bytes.NewBuffer(provider.buildRequestBody(cfg, ep, alert, result, resolved))
-	request, err := http.NewRequest(http.MethodPost, restAPIURL, buffer)
+	request, err := http.NewRequest(http.MethodPost, ApiURL, buffer)
 	if err != nil {
 		return err
 	}

alerting/provider/rocketchat/rocketchat.go

@@ -0,0 +1,212 @@
+package rocketchat
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"gopkg.in/yaml.v3"
+)
+
+var (
+	ErrWebhookURLNotSet       = errors.New("webhook-url not set")
+	ErrDuplicateGroupOverride = errors.New("duplicate group override")
+)
+
+type Config struct {
+	WebhookURL string `yaml:"webhook-url"`       // Rocket.Chat incoming webhook URL
+	Channel    string `yaml:"channel,omitempty"` // Optional channel override
+}
+
+func (cfg *Config) Validate() error {
+	if len(cfg.WebhookURL) == 0 {
+		return ErrWebhookURLNotSet
+	}
+	return nil
+}
+
+func (cfg *Config) Merge(override *Config) {
+	if len(override.WebhookURL) > 0 {
+		cfg.WebhookURL = override.WebhookURL
+	}
+	if len(override.Channel) > 0 {
+		cfg.Channel = override.Channel
+	}
+}
+
+// AlertProvider is the configuration necessary for sending an alert using Rocket.Chat
+type AlertProvider struct {
+	DefaultConfig Config `yaml:",inline"`
+
+	// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
+	DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
+
+	// Overrides is a list of Override that may be prioritized over the default configuration
+	Overrides []Override `yaml:"overrides,omitempty"`
+}
+
+// Override is a case under which the default integration is overridden
+type Override struct {
+	Group  string `yaml:"group"`
+	Config `yaml:",inline"`
+}
+
+// Validate the provider's configuration
+func (provider *AlertProvider) Validate() error {
+	registeredGroups := make(map[string]bool)
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if isAlreadyRegistered := registeredGroups[override.Group]; isAlreadyRegistered || override.Group == "" {
+				return ErrDuplicateGroupOverride
+			}
+			registeredGroups[override.Group] = true
+		}
+	}
+	return provider.DefaultConfig.Validate()
+}
+
+// Send an alert using the provider
+func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) error {
+	cfg, err := provider.GetConfig(ep.Group, alert)
+	if err != nil {
+		return err
+	}
+	body, err := provider.buildRequestBody(cfg, ep, alert, result, resolved)
+	if err != nil {
+		return err
+	}
+	buffer := bytes.NewBuffer(body)
+	request, err := http.NewRequest(http.MethodPost, cfg.WebhookURL, buffer)
+	if err != nil {
+		return err
+	}
+	request.Header.Set("Content-Type", "application/json")
+	response, err := client.GetHTTPClient(nil).Do(request)
+	if err != nil {
+		return err
+	}
+	defer response.Body.Close()
+	if response.StatusCode >= 400 {
+		body, _ := io.ReadAll(response.Body)
+		return fmt.Errorf("call to rocketchat alert returned status code %d: %s", response.StatusCode, string(body))
+	}
+	return nil
+}
+
+type Body struct {
+	Text        string       `json:"text"`
+	Channel     string       `json:"channel,omitempty"`
+	Username    string       `json:"username"`
+	Attachments []Attachment `json:"attachments"`
+}
+
+type Attachment struct {
+	Title      string  `json:"title"`
+	Text       string  `json:"text"`
+	Color      string  `json:"color"`
+	Fields     []Field `json:"fields,omitempty"`
+	AuthorName string  `json:"author_name"`
+	AuthorIcon string  `json:"author_icon"`
+}
+
+type Field struct {
+	Title string `json:"title"`
+	Value string `json:"value"`
+	Short bool   `json:"short"`
+}
+
+// buildRequestBody builds the request body for the provider
+func (provider *AlertProvider) buildRequestBody(cfg *Config, ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) ([]byte, error) {
+	var message, color string
+	if resolved {
+		message = fmt.Sprintf("An alert for *%s* has been resolved after passing successfully %d time(s) in a row", ep.DisplayName(), alert.SuccessThreshold)
+		color = "#36a64f"
+	} else {
+		message = fmt.Sprintf("An alert for *%s* has been triggered due to having failed %d time(s) in a row", ep.DisplayName(), alert.FailureThreshold)
+		color = "#dd0000"
+	}
+	var formattedConditionResults string
+	for _, conditionResult := range result.ConditionResults {
+		var prefix string
+		if conditionResult.Success {
+			prefix = "✅"
+		} else {
+			prefix = "❌"
+		}
+		formattedConditionResults += fmt.Sprintf("%s - `%s`\n", prefix, conditionResult.Condition)
+	}
+	var description string
+	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
+		description = ":\n> " + alertDescription
+	}
+	body := Body{
+		Text:     "",
+		Username: "Gatus",
+		Attachments: []Attachment{
+			{
+				Title:      "🚨 Gatus Alert",
+				Text:       message + description,
+				Color:      color,
+				AuthorName: "Gatus",
+				AuthorIcon: "https://raw.githubusercontent.com/TwiN/gatus/master/.github/assets/logo.png",
+			},
+		},
+	}
+	if cfg.Channel != "" {
+		body.Channel = cfg.Channel
+	}
+	if len(formattedConditionResults) > 0 {
+		body.Attachments[0].Fields = append(body.Attachments[0].Fields, Field{
+			Title: "Condition results",
+			Value: formattedConditionResults,
+			Short: false,
+		})
+	}
+	bodyAsJSON, err := json.Marshal(body)
+	if err != nil {
+		return nil, err
+	}
+	return bodyAsJSON, nil
+}
+
+// GetDefaultAlert returns the provider's default alert configuration
+func (provider *AlertProvider) GetDefaultAlert() *alert.Alert {
+	return provider.DefaultAlert
+}
+
+// GetConfig returns the configuration for the provider with the overrides applied
+func (provider *AlertProvider) GetConfig(group string, alert *alert.Alert) (*Config, error) {
+	cfg := provider.DefaultConfig
+	// Handle group overrides
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if group == override.Group {
+				cfg.Merge(&override.Config)
+				break
+			}
+		}
+	}
+	// Handle alert overrides
+	if len(alert.ProviderOverride) != 0 {
+		overrideConfig := Config{}
+		if err := yaml.Unmarshal(alert.ProviderOverrideAsBytes(), &overrideConfig); err != nil {
+			return nil, err
+		}
+		cfg.Merge(&overrideConfig)
+	}
+	// Validate the configuration
+	err := cfg.Validate()
+	return &cfg, err
+}
+
+// ValidateOverrides validates the alert's provider override and, if present, the group override
+func (provider *AlertProvider) ValidateOverrides(group string, alert *alert.Alert) error {
+	_, err := provider.GetConfig(group, alert)
+	return err
+}

alerting/provider/rocketchat/rocketchat_test.go

@@ -0,0 +1,164 @@
+package rocketchat
+
+import (
+	"encoding/json"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"github.com/TwiN/gatus/v5/test"
+)
+
+func TestAlertProvider_Validate(t *testing.T) {
+	scenarios := []struct {
+		name     string
+		provider AlertProvider
+		expected error
+	}{
+		{
+			name:     "valid",
+			provider: AlertProvider{DefaultConfig: Config{WebhookURL: "https://rocketchat.com/hooks/123/abc"}},
+			expected: nil,
+		},
+		{
+			name:     "valid-with-channel",
+			provider: AlertProvider{DefaultConfig: Config{WebhookURL: "https://rocketchat.com/hooks/123/abc", Channel: "#alerts"}},
+			expected: nil,
+		},
+		{
+			name:     "invalid-webhook-url",
+			provider: AlertProvider{DefaultConfig: Config{}},
+			expected: ErrWebhookURLNotSet,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			err := scenario.provider.Validate()
+			if err != scenario.expected {
+				t.Errorf("expected %v, got %v", scenario.expected, err)
+			}
+		})
+	}
+}
+
+func TestAlertProvider_Send(t *testing.T) {
+	defer client.InjectHTTPClient(nil)
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		name             string
+		provider         AlertProvider
+		alert            alert.Alert
+		resolved         bool
+		mockRoundTripper test.MockRoundTripper
+		expectedError    bool
+	}{
+		{
+			name:     "triggered",
+			provider: AlertProvider{DefaultConfig: Config{WebhookURL: "https://rocketchat.com/hooks/123/abc"}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				if body["username"] != "Gatus" {
+					t.Errorf("expected username to be 'Gatus', got %v", body["username"])
+				}
+				attachments := body["attachments"].([]interface{})
+				if len(attachments) != 1 {
+					t.Errorf("expected 1 attachment, got %d", len(attachments))
+				}
+				attachment := attachments[0].(map[string]interface{})
+				if attachment["color"] != "#dd0000" {
+					t.Errorf("expected color to be '#dd0000', got %v", attachment["color"])
+				}
+				text := attachment["text"].(string)
+				if !strings.Contains(text, "failed 3 time(s)") {
+					t.Errorf("expected text to contain failure count, got %s", text)
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "triggered-with-channel",
+			provider: AlertProvider{DefaultConfig: Config{WebhookURL: "https://rocketchat.com/hooks/123/abc", Channel: "#alerts"}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				if body["channel"] != "#alerts" {
+					t.Errorf("expected channel to be '#alerts', got %v", body["channel"])
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "resolved",
+			provider: AlertProvider{DefaultConfig: Config{WebhookURL: "https://rocketchat.com/hooks/123/abc"}},
+			alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: true,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				attachments := body["attachments"].([]interface{})
+				attachment := attachments[0].(map[string]interface{})
+				if attachment["color"] != "#36a64f" {
+					t.Errorf("expected color to be '#36a64f', got %v", attachment["color"])
+				}
+				text := attachment["text"].(string)
+				if !strings.Contains(text, "resolved") {
+					t.Errorf("expected text to contain 'resolved', got %s", text)
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "error-response",
+			provider: AlertProvider{DefaultConfig: Config{WebhookURL: "https://rocketchat.com/hooks/123/abc"}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusBadRequest, Body: http.NoBody}
+			}),
+			expectedError: true,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			client.InjectHTTPClient(&http.Client{Transport: scenario.mockRoundTripper})
+			err := scenario.provider.Send(
+				&endpoint.Endpoint{Name: "endpoint-name"},
+				&scenario.alert,
+				&endpoint.Result{
+					ConditionResults: []*endpoint.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.resolved},
+					},
+				},
+				scenario.resolved,
+			)
+			if scenario.expectedError && err == nil {
+				t.Error("expected error, got none")
+			}
+			if !scenario.expectedError && err != nil {
+				t.Error("expected no error, got", err.Error())
+			}
+		})
+	}
+}
+
+func TestAlertProvider_GetDefaultAlert(t *testing.T) {
+	if (&AlertProvider{DefaultAlert: &alert.Alert{}}).GetDefaultAlert() == nil {
+		t.Error("expected default alert to be not nil")
+	}
+	if (&AlertProvider{DefaultAlert: nil}).GetDefaultAlert() != nil {
+		t.Error("expected default alert to be nil")
+	}
+}

alerting/provider/sendgrid/sendgrid.go

@@ -0,0 +1,248 @@
+package sendgrid
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"gopkg.in/yaml.v3"
+)
+
+const (
+	ApiURL = "https://api.sendgrid.com/v3/mail/send"
+)
+
+var (
+	ErrAPIKeyNotSet           = errors.New("api-key not set")
+	ErrFromNotSet             = errors.New("from not set")
+	ErrToNotSet               = errors.New("to not set")
+	ErrDuplicateGroupOverride = errors.New("duplicate group override")
+)
+
+type Config struct {
+	APIKey string `yaml:"api-key"`
+	From   string `yaml:"from"`
+	To     string `yaml:"to"`
+
+	// ClientConfig is the configuration of the client used to communicate with the provider's target
+	ClientConfig *client.Config `yaml:"client,omitempty"`
+}
+
+func (cfg *Config) Validate() error {
+	if len(cfg.APIKey) == 0 {
+		return ErrAPIKeyNotSet
+	}
+	if len(cfg.From) == 0 {
+		return ErrFromNotSet
+	}
+	if len(cfg.To) == 0 {
+		return ErrToNotSet
+	}
+	return nil
+}
+
+func (cfg *Config) Merge(override *Config) {
+	if override.ClientConfig != nil {
+		cfg.ClientConfig = override.ClientConfig
+	}
+	if len(override.APIKey) > 0 {
+		cfg.APIKey = override.APIKey
+	}
+	if len(override.From) > 0 {
+		cfg.From = override.From
+	}
+	if len(override.To) > 0 {
+		cfg.To = override.To
+	}
+}
+
+// AlertProvider is the configuration necessary for sending an alert using SendGrid
+type AlertProvider struct {
+	DefaultConfig Config `yaml:",inline"`
+
+	// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
+	DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
+
+	// Overrides is a list of Override that may be prioritized over the default configuration
+	Overrides []Override `yaml:"overrides,omitempty"`
+}
+
+// Override is a case under which the default integration is overridden
+type Override struct {
+	Group  string `yaml:"group"`
+	Config `yaml:",inline"`
+}
+
+// Validate the provider's configuration
+func (provider *AlertProvider) Validate() error {
+	registeredGroups := make(map[string]bool)
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if isAlreadyRegistered := registeredGroups[override.Group]; isAlreadyRegistered || override.Group == "" {
+				return ErrDuplicateGroupOverride
+			}
+			registeredGroups[override.Group] = true
+		}
+	}
+	return provider.DefaultConfig.Validate()
+}
+
+// Send an alert using the provider
+func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) error {
+	cfg, err := provider.GetConfig(ep.Group, alert)
+	if err != nil {
+		return err
+	}
+	subject, body := provider.buildMessageSubjectAndBody(ep, alert, result, resolved)
+	payload := provider.buildSendGridPayload(cfg, subject, body)
+	payloadBytes, err := json.Marshal(payload)
+	if err != nil {
+		return err
+	}
+	request, err := http.NewRequest(http.MethodPost, ApiURL, bytes.NewBuffer(payloadBytes))
+	if err != nil {
+		return err
+	}
+	request.Header.Set("Content-Type", "application/json")
+	request.Header.Set("Authorization", "Bearer "+cfg.APIKey)
+	response, err := client.GetHTTPClient(cfg.ClientConfig).Do(request)
+	if err != nil {
+		return err
+	}
+	defer response.Body.Close()
+	if response.StatusCode >= 400 {
+		body, _ := io.ReadAll(response.Body)
+		return fmt.Errorf("call to sendgrid alert returned status code %d: %s", response.StatusCode, string(body))
+	}
+	return nil
+}
+
+type SendGridPayload struct {
+	Personalizations []Personalization `json:"personalizations"`
+	From             Email             `json:"from"`
+	Subject          string            `json:"subject"`
+	Content          []Content         `json:"content"`
+}
+
+type Personalization struct {
+	To []Email `json:"to"`
+}
+
+type Email struct {
+	Email string `json:"email"`
+}
+
+type Content struct {
+	Type  string `json:"type"`
+	Value string `json:"value"`
+}
+
+// buildSendGridPayload builds the SendGrid API payload
+func (provider *AlertProvider) buildSendGridPayload(cfg *Config, subject, body string) SendGridPayload {
+	toEmails := strings.Split(cfg.To, ",")
+	var recipients []Email
+	for _, email := range toEmails {
+		recipients = append(recipients, Email{Email: strings.TrimSpace(email)})
+	}
+	return SendGridPayload{
+		Personalizations: []Personalization{
+			{
+				To: recipients,
+			},
+		},
+		From: Email{
+			Email: cfg.From,
+		},
+		Subject: subject,
+		Content: []Content{
+			{
+				Type:  "text/plain",
+				Value: body,
+			},
+			{
+				Type:  "text/html",
+				Value: strings.ReplaceAll(body, "\n", "<br>"),
+			},
+		},
+	}
+}
+
+// buildMessageSubjectAndBody builds the message subject and body
+func (provider *AlertProvider) buildMessageSubjectAndBody(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) (string, string) {
+	var subject, message string
+	if resolved {
+		subject = fmt.Sprintf("[%s] Alert resolved", ep.DisplayName())
+		message = fmt.Sprintf("An alert for %s has been resolved after passing successfully %d time(s) in a row", ep.DisplayName(), alert.SuccessThreshold)
+	} else {
+		subject = fmt.Sprintf("[%s] Alert triggered", ep.DisplayName())
+		message = fmt.Sprintf("An alert for %s has been triggered due to having failed %d time(s) in a row", ep.DisplayName(), alert.FailureThreshold)
+	}
+	var formattedConditionResults string
+	if len(result.ConditionResults) > 0 {
+		formattedConditionResults = "\n\nCondition results:\n"
+		for _, conditionResult := range result.ConditionResults {
+			var prefix string
+			if conditionResult.Success {
+				prefix = "✅"
+			} else {
+				prefix = "❌"
+			}
+			formattedConditionResults += fmt.Sprintf("%s %s\n", prefix, conditionResult.Condition)
+		}
+	}
+	var description string
+	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
+		description = "\n\nAlert description: " + alertDescription
+	}
+	var extraLabels string
+	if len(ep.ExtraLabels) > 0 {
+		extraLabels = "\n\nExtra labels:\n"
+		for key, value := range ep.ExtraLabels {
+			extraLabels += fmt.Sprintf("  %s: %s\n", key, value)
+		}
+	}
+	return subject, message + description + extraLabels + formattedConditionResults
+}
+
+// GetDefaultAlert returns the provider's default alert configuration
+func (provider *AlertProvider) GetDefaultAlert() *alert.Alert {
+	return provider.DefaultAlert
+}
+
+// GetConfig returns the configuration for the provider with the overrides applied
+func (provider *AlertProvider) GetConfig(group string, alert *alert.Alert) (*Config, error) {
+	cfg := provider.DefaultConfig
+	// Handle group overrides
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if group == override.Group {
+				cfg.Merge(&override.Config)
+				break
+			}
+		}
+	}
+	// Handle alert overrides
+	if len(alert.ProviderOverride) != 0 {
+		overrideConfig := Config{}
+		if err := yaml.Unmarshal(alert.ProviderOverrideAsBytes(), &overrideConfig); err != nil {
+			return nil, err
+		}
+		cfg.Merge(&overrideConfig)
+	}
+	// Validate the configuration
+	err := cfg.Validate()
+	return &cfg, err
+}
+
+// ValidateOverrides validates the alert's provider override and, if present, the group override
+func (provider *AlertProvider) ValidateOverrides(group string, alert *alert.Alert) error {
+	_, err := provider.GetConfig(group, alert)
+	return err
+}

alerting/provider/sendgrid/sendgrid_test.go

@@ -0,0 +1,517 @@
+package sendgrid
+
+import (
+	"io"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"github.com/TwiN/gatus/v5/test"
+)
+
+func TestAlertProvider_Validate(t *testing.T) {
+	invalidProvider := AlertProvider{DefaultConfig: Config{APIKey: "", From: "", To: ""}}
+	if err := invalidProvider.Validate(); err == nil {
+		t.Error("provider shouldn't have been valid")
+	}
+	validProvider := AlertProvider{DefaultConfig: Config{APIKey: "SG.test", From: "from@example.com", To: "to@example.com"}}
+	if err := validProvider.Validate(); err != nil {
+		t.Error("provider should've been valid")
+	}
+}
+
+func TestAlertProvider_ValidateWithOverride(t *testing.T) {
+	providerWithInvalidOverrideGroup := AlertProvider{
+		DefaultConfig: Config{
+			APIKey: "SG.test",
+			From:   "from@example.com",
+			To:     "to@example.com",
+		},
+		Overrides: []Override{
+			{
+				Config: Config{To: "to@example.com"},
+				Group:  "",
+			},
+		},
+	}
+	if err := providerWithInvalidOverrideGroup.Validate(); err == nil {
+		t.Error("provider with empty Group should not have been valid")
+	}
+	if err := providerWithInvalidOverrideGroup.Validate(); err != ErrDuplicateGroupOverride {
+		t.Error("provider with empty Group should return ErrDuplicateGroupOverride")
+	}
+	providerWithDuplicateOverrideGroups := AlertProvider{
+		DefaultConfig: Config{
+			APIKey: "SG.test",
+			From:   "from@example.com",
+			To:     "to@example.com",
+		},
+		Overrides: []Override{
+			{
+				Config: Config{To: "to1@example.com"},
+				Group:  "group",
+			},
+			{
+				Config: Config{To: "to2@example.com"},
+				Group:  "group",
+			},
+		},
+	}
+	if err := providerWithDuplicateOverrideGroups.Validate(); err == nil {
+		t.Error("provider with duplicate group overrides should not have been valid")
+	}
+	if err := providerWithDuplicateOverrideGroups.Validate(); err != ErrDuplicateGroupOverride {
+		t.Error("provider with duplicate group overrides should return ErrDuplicateGroupOverride")
+	}
+	providerWithValidOverride := AlertProvider{
+		DefaultConfig: Config{
+			APIKey: "SG.test",
+			From:   "from@example.com",
+			To:     "to@example.com",
+		},
+		Overrides: []Override{
+			{
+				Config: Config{To: "to@example.com"},
+				Group:  "group",
+			},
+		},
+	}
+	if err := providerWithValidOverride.Validate(); err != nil {
+		t.Error("provider should've been valid")
+	}
+	providerWithValidMultipleOverrides := AlertProvider{
+		DefaultConfig: Config{
+			APIKey: "SG.test",
+			From:   "from@example.com",
+			To:     "to@example.com",
+		},
+		Overrides: []Override{
+			{
+				Config: Config{To: "group1@example.com"},
+				Group:  "group1",
+			},
+			{
+				Config: Config{To: "group2@example.com"},
+				Group:  "group2",
+			},
+		},
+	}
+	if err := providerWithValidMultipleOverrides.Validate(); err != nil {
+		t.Error("provider with multiple valid overrides should've been valid")
+	}
+}
+
+func TestAlertProvider_Send(t *testing.T) {
+	defer client.InjectHTTPClient(nil)
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		Name             string
+		Provider         AlertProvider
+		Alert            alert.Alert
+		Resolved         bool
+		MockRoundTripper test.MockRoundTripper
+		ExpectedError    bool
+	}{
+		{
+			Name:     "triggered",
+			Provider: AlertProvider{DefaultConfig: Config{APIKey: "SG.test", From: "from@example.com", To: "to@example.com"}},
+			Alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: false,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusAccepted, Body: http.NoBody}
+			}),
+			ExpectedError: false,
+		},
+		{
+			Name:     "triggered-error",
+			Provider: AlertProvider{DefaultConfig: Config{APIKey: "SG.test", From: "from@example.com", To: "to@example.com"}},
+			Alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: false,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusBadRequest, Body: io.NopCloser(strings.NewReader(`{"errors": [{"message": "Invalid API key"}]}`))}
+			}),
+			ExpectedError: true,
+		},
+		{
+			Name:     "resolved",
+			Provider: AlertProvider{DefaultConfig: Config{APIKey: "SG.test", From: "from@example.com", To: "to@example.com"}},
+			Alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: true,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusAccepted, Body: http.NoBody}
+			}),
+			ExpectedError: false,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			client.InjectHTTPClient(&http.Client{Transport: scenario.MockRoundTripper})
+			err := scenario.Provider.Send(
+				&endpoint.Endpoint{Name: "endpoint-name"},
+				&scenario.Alert,
+				&endpoint.Result{
+					ConditionResults: []*endpoint.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.Resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.Resolved},
+					},
+				},
+				scenario.Resolved,
+			)
+			if scenario.ExpectedError && err == nil {
+				t.Error("expected error, got none")
+			}
+			if !scenario.ExpectedError && err != nil {
+				t.Error("expected no error, got", err.Error())
+			}
+		})
+	}
+}
+
+func TestAlertProvider_buildSendGridPayload(t *testing.T) {
+	provider := &AlertProvider{}
+	cfg := &Config{
+		From: "test@example.com",
+		To:   "to1@example.com,to2@example.com",
+	}
+	subject := "Test Subject"
+	body := "Test Body\nWith new line"
+	payload := provider.buildSendGridPayload(cfg, subject, body)
+	if payload.Subject != subject {
+		t.Errorf("expected subject to be %s, got %s", subject, payload.Subject)
+	}
+	if payload.From.Email != cfg.From {
+		t.Errorf("expected from email to be %s, got %s", cfg.From, payload.From.Email)
+	}
+	if len(payload.Personalizations) != 1 {
+		t.Errorf("expected 1 personalization, got %d", len(payload.Personalizations))
+	}
+	if len(payload.Personalizations[0].To) != 2 {
+		t.Errorf("expected 2 recipients, got %d", len(payload.Personalizations[0].To))
+	}
+	if payload.Personalizations[0].To[0].Email != "to1@example.com" {
+		t.Errorf("expected first recipient to be to1@example.com, got %s", payload.Personalizations[0].To[0].Email)
+	}
+	if payload.Personalizations[0].To[1].Email != "to2@example.com" {
+		t.Errorf("expected second recipient to be to2@example.com, got %s", payload.Personalizations[0].To[1].Email)
+	}
+	if len(payload.Content) != 2 {
+		t.Errorf("expected 2 content types, got %d", len(payload.Content))
+	}
+	if payload.Content[0].Type != "text/plain" {
+		t.Errorf("expected first content type to be text/plain, got %s", payload.Content[0].Type)
+	}
+	if payload.Content[0].Value != body {
+		t.Errorf("expected plain text content to be %s, got %s", body, payload.Content[0].Value)
+	}
+	if payload.Content[1].Type != "text/html" {
+		t.Errorf("expected second content type to be text/html, got %s", payload.Content[1].Type)
+	}
+	expectedHTML := "Test Body<br>With new line"
+	if payload.Content[1].Value != expectedHTML {
+		t.Errorf("expected HTML content to be %s, got %s", expectedHTML, payload.Content[1].Value)
+	}
+}
+
+func TestAlertProvider_buildMessageSubjectAndBody(t *testing.T) {
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		Name            string
+		Provider        AlertProvider
+		Alert           alert.Alert
+		Resolved        bool
+		Endpoint        *endpoint.Endpoint
+		ExpectedSubject string
+		ExpectedBody    string
+	}{
+		{
+			Name:            "triggered",
+			Provider:        AlertProvider{},
+			Alert:           alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:        false,
+			Endpoint:        &endpoint.Endpoint{Name: "endpoint-name"},
+			ExpectedSubject: "[endpoint-name] Alert triggered",
+			ExpectedBody:    "An alert for endpoint-name has been triggered due to having failed 3 time(s) in a row\n\nAlert description: description-1\n\nCondition results:\n❌ [CONNECTED] == true\n❌ [STATUS] == 200\n",
+		},
+		{
+			Name:            "resolved",
+			Provider:        AlertProvider{},
+			Alert:           alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:        true,
+			Endpoint:        &endpoint.Endpoint{Name: "endpoint-name"},
+			ExpectedSubject: "[endpoint-name] Alert resolved",
+			ExpectedBody:    "An alert for endpoint-name has been resolved after passing successfully 5 time(s) in a row\n\nAlert description: description-2\n\nCondition results:\n✅ [CONNECTED] == true\n✅ [STATUS] == 200\n",
+		},
+		{
+			Name:            "triggered-with-single-extra-label",
+			Provider:        AlertProvider{},
+			Alert:           alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:        false,
+			Endpoint:        &endpoint.Endpoint{Name: "endpoint-name", ExtraLabels: map[string]string{"environment": "production"}},
+			ExpectedSubject: "[endpoint-name] Alert triggered",
+			ExpectedBody:    "An alert for endpoint-name has been triggered due to having failed 3 time(s) in a row\n\nAlert description: description-1\n\nExtra labels:\n  environment: production\n\n\nCondition results:\n❌ [CONNECTED] == true\n❌ [STATUS] == 200\n",
+		},
+		{
+			Name:            "resolved-with-single-extra-label",
+			Provider:        AlertProvider{},
+			Alert:           alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:        true,
+			Endpoint:        &endpoint.Endpoint{Name: "endpoint-name", ExtraLabels: map[string]string{"service": "api"}},
+			ExpectedSubject: "[endpoint-name] Alert resolved",
+			ExpectedBody:    "An alert for endpoint-name has been resolved after passing successfully 5 time(s) in a row\n\nAlert description: description-2\n\nExtra labels:\n  service: api\n\n\nCondition results:\n✅ [CONNECTED] == true\n✅ [STATUS] == 200\n",
+		},
+		{
+			Name:            "triggered-with-no-extra-labels",
+			Provider:        AlertProvider{},
+			Alert:           alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:        false,
+			Endpoint:        &endpoint.Endpoint{Name: "endpoint-name", ExtraLabels: map[string]string{}},
+			ExpectedSubject: "[endpoint-name] Alert triggered",
+			ExpectedBody:    "An alert for endpoint-name has been triggered due to having failed 3 time(s) in a row\n\nAlert description: description-1\n\nCondition results:\n❌ [CONNECTED] == true\n❌ [STATUS] == 200\n",
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			subject, body := scenario.Provider.buildMessageSubjectAndBody(
+				scenario.Endpoint,
+				&scenario.Alert,
+				&endpoint.Result{
+					ConditionResults: []*endpoint.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.Resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.Resolved},
+					},
+				},
+				scenario.Resolved,
+			)
+			if subject != scenario.ExpectedSubject {
+				t.Errorf("expected subject to be %s, got %s", scenario.ExpectedSubject, subject)
+			}
+			if body != scenario.ExpectedBody {
+				t.Errorf("expected body to be %s, got %s", scenario.ExpectedBody, body)
+			}
+		})
+	}
+}
+
+func TestAlertProvider_GetDefaultAlert(t *testing.T) {
+	if (&AlertProvider{DefaultAlert: &alert.Alert{}}).GetDefaultAlert() == nil {
+		t.Error("expected default alert to be not nil")
+	}
+	if (&AlertProvider{DefaultAlert: nil}).GetDefaultAlert() != nil {
+		t.Error("expected default alert to be nil")
+	}
+}
+
+func TestAlertProvider_GetConfig(t *testing.T) {
+	scenarios := []struct {
+		Name           string
+		Provider       AlertProvider
+		InputGroup     string
+		InputAlert     alert.Alert
+		ExpectedOutput Config
+	}{
+		{
+			Name: "provider-no-override-specify-no-group-should-default",
+			Provider: AlertProvider{
+				DefaultConfig: Config{APIKey: "SG.test", From: "from@example.com", To: "to@example.com"},
+				Overrides:     nil,
+			},
+			InputGroup:     "",
+			InputAlert:     alert.Alert{},
+			ExpectedOutput: Config{APIKey: "SG.test", From: "from@example.com", To: "to@example.com"},
+		},
+		{
+			Name: "provider-no-override-specify-group-should-default",
+			Provider: AlertProvider{
+				DefaultConfig: Config{APIKey: "SG.test", From: "from@example.com", To: "to@example.com"},
+				Overrides:     nil,
+			},
+			InputGroup:     "group",
+			InputAlert:     alert.Alert{},
+			ExpectedOutput: Config{APIKey: "SG.test", From: "from@example.com", To: "to@example.com"},
+		},
+		{
+			Name: "provider-with-override-specify-no-group-should-default",
+			Provider: AlertProvider{
+				DefaultConfig: Config{APIKey: "SG.test", From: "from@example.com", To: "to@example.com"},
+				Overrides: []Override{
+					{
+						Group:  "group",
+						Config: Config{To: "to01@example.com"},
+					},
+				},
+			},
+			InputGroup:     "",
+			InputAlert:     alert.Alert{},
+			ExpectedOutput: Config{APIKey: "SG.test", From: "from@example.com", To: "to@example.com"},
+		},
+		{
+			Name: "provider-with-override-specify-group-should-override",
+			Provider: AlertProvider{
+				DefaultConfig: Config{APIKey: "SG.test", From: "from@example.com", To: "to@example.com"},
+				Overrides: []Override{
+					{
+						Group:  "group",
+						Config: Config{To: "group-to@example.com"},
+					},
+				},
+			},
+			InputGroup:     "group",
+			InputAlert:     alert.Alert{},
+			ExpectedOutput: Config{APIKey: "SG.test", From: "from@example.com", To: "group-to@example.com"},
+		},
+		{
+			Name: "provider-with-group-override-and-alert-override--alert-override-should-take-precedence",
+			Provider: AlertProvider{
+				DefaultConfig: Config{APIKey: "SG.test", From: "from@example.com", To: "to@example.com"},
+				Overrides: []Override{
+					{
+						Group:  "group",
+						Config: Config{To: "group-to@example.com"},
+					},
+				},
+			},
+			InputGroup:     "group",
+			InputAlert:     alert.Alert{ProviderOverride: map[string]any{"api-key": "SG.override", "to": "alert-to@example.com", "from": "alert-from@example.com"}},
+			ExpectedOutput: Config{APIKey: "SG.override", From: "alert-from@example.com", To: "alert-to@example.com"},
+		},
+		{
+			Name: "provider-with-multiple-overrides-pick-correct-group",
+			Provider: AlertProvider{
+				DefaultConfig: Config{APIKey: "SG.default", From: "default@example.com", To: "default@example.com"},
+				Overrides: []Override{
+					{
+						Group:  "group1",
+						Config: Config{APIKey: "SG.group1", To: "group1@example.com"},
+					},
+					{
+						Group:  "group2",
+						Config: Config{APIKey: "SG.group2", From: "group2@example.com"},
+					},
+				},
+			},
+			InputGroup:     "group2",
+			InputAlert:     alert.Alert{},
+			ExpectedOutput: Config{APIKey: "SG.group2", From: "group2@example.com", To: "default@example.com"},
+		},
+		{
+			Name: "provider-partial-override-hierarchy",
+			Provider: AlertProvider{
+				DefaultConfig: Config{APIKey: "SG.default", From: "default@example.com", To: "default@example.com"},
+				Overrides: []Override{
+					{
+						Group:  "test-group",
+						Config: Config{From: "group@example.com"},
+					},
+				},
+			},
+			InputGroup:     "test-group",
+			InputAlert:     alert.Alert{ProviderOverride: map[string]any{"to": "alert@example.com"}},
+			ExpectedOutput: Config{APIKey: "SG.default", From: "group@example.com", To: "alert@example.com"},
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			got, err := scenario.Provider.GetConfig(scenario.InputGroup, &scenario.InputAlert)
+			if err != nil {
+				t.Fatalf("unexpected error: %s", err)
+			}
+			if got.APIKey != scenario.ExpectedOutput.APIKey {
+				t.Errorf("expected APIKey to be %s, got %s", scenario.ExpectedOutput.APIKey, got.APIKey)
+			}
+			if got.From != scenario.ExpectedOutput.From {
+				t.Errorf("expected From to be %s, got %s", scenario.ExpectedOutput.From, got.From)
+			}
+			if got.To != scenario.ExpectedOutput.To {
+				t.Errorf("expected To to be %s, got %s", scenario.ExpectedOutput.To, got.To)
+			}
+			// Test ValidateOverrides as well, since it really just calls GetConfig
+			if err = scenario.Provider.ValidateOverrides(scenario.InputGroup, &scenario.InputAlert); err != nil {
+				t.Errorf("unexpected error: %s", err)
+			}
+		})
+	}
+}
+
+func TestConfig_Validate(t *testing.T) {
+	scenarios := []struct {
+		Name          string
+		Config        Config
+		ExpectedError error
+	}{
+		{
+			Name:          "missing-api-key",
+			Config:        Config{APIKey: "", From: "test@example.com", To: "to@example.com"},
+			ExpectedError: ErrAPIKeyNotSet,
+		},
+		{
+			Name:          "missing-from",
+			Config:        Config{APIKey: "SG.test", From: "", To: "to@example.com"},
+			ExpectedError: ErrFromNotSet,
+		},
+		{
+			Name:          "missing-to",
+			Config:        Config{APIKey: "SG.test", From: "test@example.com", To: ""},
+			ExpectedError: ErrToNotSet,
+		},
+		{
+			Name:          "valid-config",
+			Config:        Config{APIKey: "SG.test", From: "test@example.com", To: "to@example.com"},
+			ExpectedError: nil,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			err := scenario.Config.Validate()
+			if scenario.ExpectedError == nil && err != nil {
+				t.Errorf("expected no error, got %v", err)
+			}
+			if scenario.ExpectedError != nil && err == nil {
+				t.Errorf("expected error %v, got none", scenario.ExpectedError)
+			}
+			if scenario.ExpectedError != nil && err != nil && err.Error() != scenario.ExpectedError.Error() {
+				t.Errorf("expected error %v, got %v", scenario.ExpectedError, err)
+			}
+		})
+	}
+}
+
+func TestConfig_Merge(t *testing.T) {
+	config := Config{APIKey: "SG.original", From: "from@example.com", To: "to@example.com"}
+	override := Config{APIKey: "SG.override", To: "override@example.com"}
+	config.Merge(&override)
+	if config.APIKey != "SG.override" {
+		t.Errorf("expected APIKey to be SG.override, got %s", config.APIKey)
+	}
+	if config.From != "from@example.com" {
+		t.Errorf("expected From to remain from@example.com, got %s", config.From)
+	}
+	if config.To != "override@example.com" {
+		t.Errorf("expected To to be override@example.com, got %s", config.To)
+	}
+}
+
+func TestConfig_MergeWithClientConfig(t *testing.T) {
+	config := Config{APIKey: "SG.original", From: "from@example.com", To: "to@example.com"}
+	override := Config{APIKey: "SG.override", ClientConfig: &client.Config{Timeout: 30000}}
+	config.Merge(&override)
+	if config.APIKey != "SG.override" {
+		t.Errorf("expected APIKey to be SG.override, got %s", config.APIKey)
+	}
+	if config.ClientConfig == nil {
+		t.Error("expected ClientConfig to be set")
+	}
+	if config.ClientConfig.Timeout != 30000 {
+		t.Errorf("expected ClientConfig.Timeout to be 30000, got %d", config.ClientConfig.Timeout)
+	}
+	config2 := Config{APIKey: "SG.test", From: "from@example.com", To: "to@example.com", ClientConfig: &client.Config{Timeout: 10000}}
+	override2 := Config{APIKey: "SG.override2"}
+	config2.Merge(&override2)
+	if config2.ClientConfig.Timeout != 10000 {
+		t.Errorf("expected ClientConfig.Timeout to remain 10000, got %d", config2.ClientConfig.Timeout)
+	}
+}

alerting/provider/signal/signal.go

@@ -0,0 +1,196 @@
+package signal
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"gopkg.in/yaml.v3"
+)
+
+var (
+	ErrApiURLNotSet           = errors.New("api-url not set")
+	ErrNumberNotSet           = errors.New("number not set")
+	ErrRecipientsNotSet       = errors.New("recipients not set")
+	ErrDuplicateGroupOverride = errors.New("duplicate group override")
+)
+
+type Config struct {
+	ApiURL     string   `yaml:"api-url"`    // Signal API URL (e.g., signal-cli-rest-api instance)
+	Number     string   `yaml:"number"`     // Sender phone number
+	Recipients []string `yaml:"recipients"` // List of recipient phone numbers
+}
+
+func (cfg *Config) Validate() error {
+	if len(cfg.ApiURL) == 0 {
+		return ErrApiURLNotSet
+	}
+	if !strings.HasSuffix(cfg.ApiURL, "/v2/send") {
+		cfg.ApiURL = cfg.ApiURL + "/v2/send"
+	}
+	if len(cfg.Number) == 0 {
+		return ErrNumberNotSet
+	}
+	if len(cfg.Recipients) == 0 {
+		return ErrRecipientsNotSet
+	}
+	return nil
+}
+
+func (cfg *Config) Merge(override *Config) {
+	if len(override.ApiURL) > 0 {
+		cfg.ApiURL = override.ApiURL
+	}
+	if len(override.Number) > 0 {
+		cfg.Number = override.Number
+	}
+	if len(override.Recipients) > 0 {
+		cfg.Recipients = override.Recipients
+	}
+}
+
+// AlertProvider is the configuration necessary for sending an alert using Signal
+type AlertProvider struct {
+	DefaultConfig Config `yaml:",inline"`
+
+	// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
+	DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
+
+	// Overrides is a list of Override that may be prioritized over the default configuration
+	Overrides []Override `yaml:"overrides,omitempty"`
+}
+
+// Override is a case under which the default integration is overridden
+type Override struct {
+	Group  string `yaml:"group"`
+	Config `yaml:",inline"`
+}
+
+// Validate the provider's configuration
+func (provider *AlertProvider) Validate() error {
+	registeredGroups := make(map[string]bool)
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if isAlreadyRegistered := registeredGroups[override.Group]; isAlreadyRegistered || override.Group == "" {
+				return ErrDuplicateGroupOverride
+			}
+			registeredGroups[override.Group] = true
+		}
+	}
+	return provider.DefaultConfig.Validate()
+}
+
+// Send an alert using the provider
+func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) error {
+	cfg, err := provider.GetConfig(ep.Group, alert)
+	if err != nil {
+		return err
+	}
+	for _, recipient := range cfg.Recipients {
+		body, err := provider.buildRequestBody(cfg, ep, alert, result, resolved, recipient)
+		if err != nil {
+			return err
+		}
+		buffer := bytes.NewBuffer(body)
+		request, err := http.NewRequest(http.MethodPost, cfg.ApiURL, buffer)
+		if err != nil {
+			return err
+		}
+		request.Header.Set("Content-Type", "application/json")
+		response, err := client.GetHTTPClient(nil).Do(request)
+		if err != nil {
+			return err
+		}
+		if response.StatusCode >= 400 {
+			body, _ := io.ReadAll(response.Body)
+			response.Body.Close()
+			return fmt.Errorf("call to signal alert returned status code %d: %s", response.StatusCode, string(body))
+		}
+		response.Body.Close()
+	}
+	return nil
+}
+
+type Body struct {
+	Message    string   `json:"message"`
+	Number     string   `json:"number"`
+	Recipients []string `json:"recipients"`
+}
+
+// buildRequestBody builds the request body for the provider
+func (provider *AlertProvider) buildRequestBody(cfg *Config, ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool, recipient string) ([]byte, error) {
+	var message string
+	if resolved {
+		message = fmt.Sprintf("🟢 RESOLVED: %s\nAlert has been resolved after passing successfully %d time(s) in a row", ep.DisplayName(), alert.SuccessThreshold)
+	} else {
+		message = fmt.Sprintf("🔴 ALERT: %s\nEndpoint has failed %d time(s) in a row", ep.DisplayName(), alert.FailureThreshold)
+	}
+	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
+		message += fmt.Sprintf("\n\nDescription: %s", alertDescription)
+	}
+	if len(result.ConditionResults) > 0 {
+		message += "\n\nCondition results:"
+		for _, conditionResult := range result.ConditionResults {
+			var status string
+			if conditionResult.Success {
+				status = "✅"
+			} else {
+				status = "❌"
+			}
+			message += fmt.Sprintf("\n%s %s", status, conditionResult.Condition)
+		}
+	}
+	body := Body{
+		Message:    message,
+		Number:     cfg.Number,
+		Recipients: []string{recipient},
+	}
+	bodyAsJSON, err := json.Marshal(body)
+	if err != nil {
+		return nil, err
+	}
+	return bodyAsJSON, nil
+}
+
+// GetDefaultAlert returns the provider's default alert configuration
+func (provider *AlertProvider) GetDefaultAlert() *alert.Alert {
+	return provider.DefaultAlert
+}
+
+// GetConfig returns the configuration for the provider with the overrides applied
+func (provider *AlertProvider) GetConfig(group string, alert *alert.Alert) (*Config, error) {
+	cfg := provider.DefaultConfig
+	// Handle group overrides
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if group == override.Group {
+				cfg.Merge(&override.Config)
+				break
+			}
+		}
+	}
+	// Handle alert overrides
+	if len(alert.ProviderOverride) != 0 {
+		overrideConfig := Config{}
+		if err := yaml.Unmarshal(alert.ProviderOverrideAsBytes(), &overrideConfig); err != nil {
+			return nil, err
+		}
+		cfg.Merge(&overrideConfig)
+	}
+	// Validate the configuration
+	err := cfg.Validate()
+	return &cfg, err
+}
+
+// ValidateOverrides validates the alert's provider override and, if present, the group override
+func (provider *AlertProvider) ValidateOverrides(group string, alert *alert.Alert) error {
+	_, err := provider.GetConfig(group, alert)
+	return err
+}

alerting/provider/signal/signal_test.go

@@ -0,0 +1,151 @@
+package signal
+
+import (
+	"encoding/json"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"github.com/TwiN/gatus/v5/test"
+)
+
+func TestAlertProvider_Validate(t *testing.T) {
+	scenarios := []struct {
+		name     string
+		provider AlertProvider
+		expected error
+	}{
+		{
+			name:     "valid",
+			provider: AlertProvider{DefaultConfig: Config{ApiURL: "http://localhost:8080", Number: "+1234567890", Recipients: []string{"+0987654321"}}},
+			expected: nil,
+		},
+		{
+			name:     "invalid-api-url",
+			provider: AlertProvider{DefaultConfig: Config{Number: "+1234567890", Recipients: []string{"+0987654321"}}},
+			expected: ErrApiURLNotSet,
+		},
+		{
+			name:     "invalid-number",
+			provider: AlertProvider{DefaultConfig: Config{ApiURL: "http://localhost:8080", Recipients: []string{"+0987654321"}}},
+			expected: ErrNumberNotSet,
+		},
+		{
+			name:     "invalid-recipients",
+			provider: AlertProvider{DefaultConfig: Config{ApiURL: "http://localhost:8080", Number: "+1234567890"}},
+			expected: ErrRecipientsNotSet,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			err := scenario.provider.Validate()
+			if err != scenario.expected {
+				t.Errorf("expected %v, got %v", scenario.expected, err)
+			}
+		})
+	}
+}
+
+func TestAlertProvider_Send(t *testing.T) {
+	defer client.InjectHTTPClient(nil)
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		name             string
+		provider         AlertProvider
+		alert            alert.Alert
+		resolved         bool
+		mockRoundTripper test.MockRoundTripper
+		expectedError    bool
+	}{
+		{
+			name:     "triggered",
+			provider: AlertProvider{DefaultConfig: Config{ApiURL: "http://localhost:8080", Number: "+1234567890", Recipients: []string{"+0987654321", "+1111111111"}}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				if r.URL.Path != "/v2/send" {
+					t.Errorf("expected path /v2/send, got %s", r.URL.Path)
+				}
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				if body["number"] != "+1234567890" {
+					t.Errorf("expected number to be '+1234567890', got %v", body["number"])
+				}
+				recipients := body["recipients"].([]interface{})
+				if len(recipients) != 1 {
+					t.Errorf("expected 1 recipient per request, got %d", len(recipients))
+				}
+				message := body["message"].(string)
+				if !strings.Contains(message, "ALERT") {
+					t.Errorf("expected message to contain 'ALERT', got %s", message)
+				}
+				if !strings.Contains(message, "failed 3 time(s)") {
+					t.Errorf("expected message to contain failure count, got %s", message)
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "resolved",
+			provider: AlertProvider{DefaultConfig: Config{ApiURL: "http://localhost:8080", Number: "+1234567890", Recipients: []string{"+0987654321"}}},
+			alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: true,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				message := body["message"].(string)
+				if !strings.Contains(message, "RESOLVED") {
+					t.Errorf("expected message to contain 'RESOLVED', got %s", message)
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "error-response",
+			provider: AlertProvider{DefaultConfig: Config{ApiURL: "http://localhost:8080", Number: "+1234567890", Recipients: []string{"+0987654321"}}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusInternalServerError, Body: http.NoBody}
+			}),
+			expectedError: true,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			client.InjectHTTPClient(&http.Client{Transport: scenario.mockRoundTripper})
+			err := scenario.provider.Send(
+				&endpoint.Endpoint{Name: "endpoint-name"},
+				&scenario.alert,
+				&endpoint.Result{
+					ConditionResults: []*endpoint.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.resolved},
+					},
+				},
+				scenario.resolved,
+			)
+			if scenario.expectedError && err == nil {
+				t.Error("expected error, got none")
+			}
+			if !scenario.expectedError && err != nil {
+				t.Error("expected no error, got", err.Error())
+			}
+		})
+	}
+}
+
+func TestAlertProvider_GetDefaultAlert(t *testing.T) {
+	if (&AlertProvider{DefaultAlert: &alert.Alert{}}).GetDefaultAlert() == nil {
+		t.Error("expected default alert to be not nil")
+	}
+	if (&AlertProvider{DefaultAlert: nil}).GetDefaultAlert() != nil {
+		t.Error("expected default alert to be nil")
+	}
+}

alerting/provider/signl4/signl4.go

@@ -0,0 +1,184 @@
+package signl4
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"gopkg.in/yaml.v3"
+)
+
+var (
+	ErrTeamSecretNotSet       = errors.New("team-secret not set")
+	ErrDuplicateGroupOverride = errors.New("duplicate group override")
+)
+
+type Config struct {
+	TeamSecret string `yaml:"team-secret"` // SIGNL4 team secret
+}
+
+func (cfg *Config) Validate() error {
+	if len(cfg.TeamSecret) == 0 {
+		return ErrTeamSecretNotSet
+	}
+	return nil
+}
+
+func (cfg *Config) Merge(override *Config) {
+	if len(override.TeamSecret) > 0 {
+		cfg.TeamSecret = override.TeamSecret
+	}
+}
+
+// AlertProvider is the configuration necessary for sending an alert using SIGNL4
+type AlertProvider struct {
+	DefaultConfig Config `yaml:",inline"`
+
+	// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
+	DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
+
+	// Overrides is a list of Override that may be prioritized over the default configuration
+	Overrides []Override `yaml:"overrides,omitempty"`
+}
+
+// Override is a case under which the default integration is overridden
+type Override struct {
+	Group  string `yaml:"group"`
+	Config `yaml:",inline"`
+}
+
+// Validate the provider's configuration
+func (provider *AlertProvider) Validate() error {
+	registeredGroups := make(map[string]bool)
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if isAlreadyRegistered := registeredGroups[override.Group]; isAlreadyRegistered || override.Group == "" {
+				return ErrDuplicateGroupOverride
+			}
+			registeredGroups[override.Group] = true
+		}
+	}
+	return provider.DefaultConfig.Validate()
+}
+
+// Send an alert using the provider
+func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) error {
+	cfg, err := provider.GetConfig(ep.Group, alert)
+	if err != nil {
+		return err
+	}
+	body, err := provider.buildRequestBody(ep, alert, result, resolved)
+	if err != nil {
+		return err
+	}
+	buffer := bytes.NewBuffer(body)
+	webhookURL := fmt.Sprintf("https://connect.signl4.com/webhook/%s", cfg.TeamSecret)
+	request, err := http.NewRequest(http.MethodPost, webhookURL, buffer)
+	if err != nil {
+		return err
+	}
+	request.Header.Set("Content-Type", "application/json")
+	response, err := client.GetHTTPClient(nil).Do(request)
+	if err != nil {
+		return err
+	}
+	defer response.Body.Close()
+	if response.StatusCode >= 400 {
+		body, _ := io.ReadAll(response.Body)
+		return fmt.Errorf("call to signl4 alert returned status code %d: %s", response.StatusCode, string(body))
+	}
+	return nil
+}
+
+type Body struct {
+	Title         string `json:"Title"`
+	Message       string `json:"Message"`
+	XS4Service    string `json:"X-S4-Service"`
+	XS4Status     string `json:"X-S4-Status"`
+	XS4ExternalID string `json:"X-S4-ExternalID"`
+}
+
+// buildRequestBody builds the request body for the provider
+func (provider *AlertProvider) buildRequestBody(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) ([]byte, error) {
+	var title, message, status string
+	if resolved {
+		title = fmt.Sprintf("RESOLVED: %s", ep.DisplayName())
+		message = fmt.Sprintf("An alert for %s has been resolved after passing successfully %d time(s) in a row", ep.DisplayName(), alert.SuccessThreshold)
+		status = "resolved"
+	} else {
+		title = fmt.Sprintf("TRIGGERED: %s", ep.DisplayName())
+		message = fmt.Sprintf("An alert for %s has been triggered due to having failed %d time(s) in a row", ep.DisplayName(), alert.FailureThreshold)
+		status = "new"
+	}
+	var conditionResults string
+	if len(result.ConditionResults) > 0 {
+		conditionResults = "\n\nCondition results:\n"
+		for _, conditionResult := range result.ConditionResults {
+			var prefix string
+			if conditionResult.Success {
+				prefix = "✓"
+			} else {
+				prefix = "✗"
+			}
+			conditionResults += fmt.Sprintf("%s %s\n", prefix, conditionResult.Condition)
+		}
+	}
+	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
+		message += "\n\nDescription: " + alertDescription
+	}
+	message += conditionResults
+	body := Body{
+		Title:         title,
+		Message:       message,
+		XS4Service:    ep.DisplayName(),
+		XS4Status:     status,
+		XS4ExternalID: fmt.Sprintf("gatus-%s", ep.Key()),
+	}
+	bodyAsJSON, err := json.Marshal(body)
+	if err != nil {
+		return nil, err
+	}
+	return bodyAsJSON, nil
+}
+
+// GetDefaultAlert returns the provider's default alert configuration
+func (provider *AlertProvider) GetDefaultAlert() *alert.Alert {
+	return provider.DefaultAlert
+}
+
+// GetConfig returns the configuration for the provider with the overrides applied
+func (provider *AlertProvider) GetConfig(group string, alert *alert.Alert) (*Config, error) {
+	cfg := provider.DefaultConfig
+	// Handle group overrides
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if group == override.Group {
+				cfg.Merge(&override.Config)
+				break
+			}
+		}
+	}
+	// Handle alert overrides
+	if len(alert.ProviderOverride) != 0 {
+		overrideConfig := Config{}
+		if err := yaml.Unmarshal(alert.ProviderOverrideAsBytes(), &overrideConfig); err != nil {
+			return nil, err
+		}
+		cfg.Merge(&overrideConfig)
+	}
+	// Validate the configuration
+	err := cfg.Validate()
+	return &cfg, err
+}
+
+// ValidateOverrides validates the alert's provider override and, if present, the group override
+func (provider *AlertProvider) ValidateOverrides(group string, alert *alert.Alert) error {
+	_, err := provider.GetConfig(group, alert)
+	return err
+}

alerting/provider/signl4/signl4_test.go

@@ -1,4 +1,4 @@
-package jetbrainsspace
+package signl4
 
 import (
 	"encoding/json"
@@ -12,11 +12,11 @@ import (
 )
 
 func TestAlertProvider_Validate(t *testing.T) {
-	invalidProvider := AlertProvider{DefaultConfig: Config{Project: ""}}
+	invalidProvider := AlertProvider{DefaultConfig: Config{TeamSecret: ""}}
 	if err := invalidProvider.Validate(); err == nil {
 		t.Error("provider shouldn't have been valid")
 	}
-	validProvider := AlertProvider{DefaultConfig: Config{Project: "foo", ChannelID: "bar", Token: "baz"}}
+	validProvider := AlertProvider{DefaultConfig: Config{TeamSecret: "team-secret-123"}}
 	if err := validProvider.Validate(); err != nil {
 		t.Error("provider should've been valid")
 	}
@@ -24,10 +24,9 @@ func TestAlertProvider_Validate(t *testing.T) {
 
 func TestAlertProvider_ValidateWithOverride(t *testing.T) {
 	providerWithInvalidOverrideGroup := AlertProvider{
-		DefaultConfig: Config{Project: "foobar"},
 		Overrides: []Override{
 			{
-				Config: Config{ChannelID: "http://example.com"},
+				Config: Config{TeamSecret: "team-secret-123"},
 				Group:  "",
 			},
 		},
@@ -36,26 +35,21 @@ func TestAlertProvider_ValidateWithOverride(t *testing.T) {
 		t.Error("provider Group shouldn't have been valid")
 	}
 	providerWithInvalidOverrideTo := AlertProvider{
-		DefaultConfig: Config{Project: "foobar"},
 		Overrides: []Override{
 			{
-				Config: Config{ChannelID: ""},
+				Config: Config{TeamSecret: ""},
 				Group:  "group",
 			},
 		},
 	}
 	if err := providerWithInvalidOverrideTo.Validate(); err == nil {
-		t.Error("provider integration key shouldn't have been valid")
+		t.Error("provider team secret shouldn't have been valid")
 	}
 	providerWithValidOverride := AlertProvider{
-		DefaultConfig: Config{
-			Project:   "foo",
-			ChannelID: "bar",
-			Token:     "baz",
-		},
+		DefaultConfig: Config{TeamSecret: "team-secret-123"},
 		Overrides: []Override{
 			{
-				Config: Config{ChannelID: "foobar"},
+				Config: Config{TeamSecret: "team-secret-override"},
 				Group:  "group",
 			},
 		},
@@ -79,7 +73,7 @@ func TestAlertProvider_Send(t *testing.T) {
 	}{
 		{
 			Name:     "triggered",
-			Provider: AlertProvider{DefaultConfig: Config{ChannelID: "1", Project: "project", Token: "token"}},
+			Provider: AlertProvider{DefaultConfig: Config{TeamSecret: "team-secret-123"}},
 			Alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved: false,
 			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
@@ -89,7 +83,7 @@ func TestAlertProvider_Send(t *testing.T) {
 		},
 		{
 			Name:     "triggered-error",
-			Provider: AlertProvider{DefaultConfig: Config{ChannelID: "1", Project: "project", Token: "token"}},
+			Provider: AlertProvider{DefaultConfig: Config{TeamSecret: "team-secret-123"}},
 			Alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved: false,
 			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
@@ -99,7 +93,7 @@ func TestAlertProvider_Send(t *testing.T) {
 		},
 		{
 			Name:     "resolved",
-			Provider: AlertProvider{DefaultConfig: Config{ChannelID: "1", Project: "project", Token: "token"}},
+			Provider: AlertProvider{DefaultConfig: Config{TeamSecret: "team-secret-123"}},
 			Alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved: true,
 			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
@@ -109,7 +103,7 @@ func TestAlertProvider_Send(t *testing.T) {
 		},
 		{
 			Name:     "resolved-error",
-			Provider: AlertProvider{DefaultConfig: Config{ChannelID: "1", Project: "project", Token: "token"}},
+			Provider: AlertProvider{DefaultConfig: Config{TeamSecret: "team-secret-123"}},
 			Alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved: true,
 			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
@@ -150,56 +144,72 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 		Provider     AlertProvider
 		Endpoint     endpoint.Endpoint
 		Alert        alert.Alert
+		NoConditions bool
 		Resolved     bool
 		ExpectedBody string
 	}{
 		{
 			Name:         "triggered",
-			Provider:     AlertProvider{DefaultConfig: Config{ChannelID: "1", Project: "project"}},
+			Provider:     AlertProvider{},
 			Endpoint:     endpoint.Endpoint{Name: "name"},
 			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     false,
-			ExpectedBody: `{"channel":"id:1","content":{"className":"ChatMessage.Block","style":"WARNING","sections":[{"className":"MessageSection","elements":[{"className":"MessageText","accessory":{"className":"MessageIcon","icon":{"icon":"warning"},"style":"WARNING"},"style":"WARNING","size":"REGULAR","content":"[CONNECTED] == true"},{"className":"MessageText","accessory":{"className":"MessageIcon","icon":{"icon":"warning"},"style":"WARNING"},"style":"WARNING","size":"REGULAR","content":"[STATUS] == 200"}],"header":"An alert for *name* has been triggered due to having failed 3 time(s) in a row"}]}}`,
+			ExpectedBody: "{\"Title\":\"TRIGGERED: name\",\"Message\":\"An alert for name has been triggered due to having failed 3 time(s) in a row\\n\\nDescription: description-1\\n\\nCondition results:\\n✗ [CONNECTED] == true\\n✗ [STATUS] == 200\\n\",\"X-S4-Service\":\"name\",\"X-S4-Status\":\"new\",\"X-S4-ExternalID\":\"gatus-_name\"}",
 		},
 		{
 			Name:         "triggered-with-group",
-			Provider:     AlertProvider{DefaultConfig: Config{ChannelID: "1", Project: "project"}},
+			Provider:     AlertProvider{},
 			Endpoint:     endpoint.Endpoint{Name: "name", Group: "group"},
 			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     false,
-			ExpectedBody: `{"channel":"id:1","content":{"className":"ChatMessage.Block","style":"WARNING","sections":[{"className":"MessageSection","elements":[{"className":"MessageText","accessory":{"className":"MessageIcon","icon":{"icon":"warning"},"style":"WARNING"},"style":"WARNING","size":"REGULAR","content":"[CONNECTED] == true"},{"className":"MessageText","accessory":{"className":"MessageIcon","icon":{"icon":"warning"},"style":"WARNING"},"style":"WARNING","size":"REGULAR","content":"[STATUS] == 200"}],"header":"An alert for *group/name* has been triggered due to having failed 3 time(s) in a row"}]}}`,
+			ExpectedBody: "{\"Title\":\"TRIGGERED: group/name\",\"Message\":\"An alert for group/name has been triggered due to having failed 3 time(s) in a row\\n\\nDescription: description-1\\n\\nCondition results:\\n✗ [CONNECTED] == true\\n✗ [STATUS] == 200\\n\",\"X-S4-Service\":\"group/name\",\"X-S4-Status\":\"new\",\"X-S4-ExternalID\":\"gatus-group_name\"}",
+		},
+		{
+			Name:         "triggered-with-no-conditions",
+			NoConditions: true,
+			Provider:     AlertProvider{},
+			Endpoint:     endpoint.Endpoint{Name: "name"},
+			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:     false,
+			ExpectedBody: "{\"Title\":\"TRIGGERED: name\",\"Message\":\"An alert for name has been triggered due to having failed 3 time(s) in a row\\n\\nDescription: description-1\",\"X-S4-Service\":\"name\",\"X-S4-Status\":\"new\",\"X-S4-ExternalID\":\"gatus-_name\"}",
 		},
 		{
 			Name:         "resolved",
-			Provider:     AlertProvider{DefaultConfig: Config{ChannelID: "1", Project: "project"}},
+			Provider:     AlertProvider{},
 			Endpoint:     endpoint.Endpoint{Name: "name"},
 			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     true,
-			ExpectedBody: `{"channel":"id:1","content":{"className":"ChatMessage.Block","style":"SUCCESS","sections":[{"className":"MessageSection","elements":[{"className":"MessageText","accessory":{"className":"MessageIcon","icon":{"icon":"success"},"style":"SUCCESS"},"style":"SUCCESS","size":"REGULAR","content":"[CONNECTED] == true"},{"className":"MessageText","accessory":{"className":"MessageIcon","icon":{"icon":"success"},"style":"SUCCESS"},"style":"SUCCESS","size":"REGULAR","content":"[STATUS] == 200"}],"header":"An alert for *name* has been resolved after passing successfully 5 time(s) in a row"}]}}`,
+			ExpectedBody: "{\"Title\":\"RESOLVED: name\",\"Message\":\"An alert for name has been resolved after passing successfully 5 time(s) in a row\\n\\nDescription: description-2\\n\\nCondition results:\\n✓ [CONNECTED] == true\\n✓ [STATUS] == 200\\n\",\"X-S4-Service\":\"name\",\"X-S4-Status\":\"resolved\",\"X-S4-ExternalID\":\"gatus-_name\"}",
 		},
 		{
 			Name:         "resolved-with-group",
-			Provider:     AlertProvider{DefaultConfig: Config{ChannelID: "1", Project: "project"}},
+			Provider:     AlertProvider{},
 			Endpoint:     endpoint.Endpoint{Name: "name", Group: "group"},
 			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     true,
-			ExpectedBody: `{"channel":"id:1","content":{"className":"ChatMessage.Block","style":"SUCCESS","sections":[{"className":"MessageSection","elements":[{"className":"MessageText","accessory":{"className":"MessageIcon","icon":{"icon":"success"},"style":"SUCCESS"},"style":"SUCCESS","size":"REGULAR","content":"[CONNECTED] == true"},{"className":"MessageText","accessory":{"className":"MessageIcon","icon":{"icon":"success"},"style":"SUCCESS"},"style":"SUCCESS","size":"REGULAR","content":"[STATUS] == 200"}],"header":"An alert for *group/name* has been resolved after passing successfully 5 time(s) in a row"}]}}`,
+			ExpectedBody: "{\"Title\":\"RESOLVED: group/name\",\"Message\":\"An alert for group/name has been resolved after passing successfully 5 time(s) in a row\\n\\nDescription: description-2\\n\\nCondition results:\\n✓ [CONNECTED] == true\\n✓ [STATUS] == 200\\n\",\"X-S4-Service\":\"group/name\",\"X-S4-Status\":\"resolved\",\"X-S4-ExternalID\":\"gatus-group_name\"}",
 		},
 	}
 	for _, scenario := range scenarios {
 		t.Run(scenario.Name, func(t *testing.T) {
-			body := scenario.Provider.buildRequestBody(
-				&scenario.Provider.DefaultConfig,
+			var conditionResults []*endpoint.ConditionResult
+			if !scenario.NoConditions {
+				conditionResults = []*endpoint.ConditionResult{
+					{Condition: "[CONNECTED] == true", Success: scenario.Resolved},
+					{Condition: "[STATUS] == 200", Success: scenario.Resolved},
+				}
+			}
+			body, err := scenario.Provider.buildRequestBody(
 				&scenario.Endpoint,
 				&scenario.Alert,
 				&endpoint.Result{
-					ConditionResults: []*endpoint.ConditionResult{
-						{Condition: "[CONNECTED] == true", Success: scenario.Resolved},
-						{Condition: "[STATUS] == 200", Success: scenario.Resolved},
-					},
+					ConditionResults: conditionResults,
 				},
 				scenario.Resolved,
 			)
+			if err != nil {
+				t.Fatalf("buildRequestBody returned an error: %v", err)
+			}
 			if string(body) != scenario.ExpectedBody {
 				t.Errorf("expected:\n%s\ngot:\n%s", scenario.ExpectedBody, body)
 			}
@@ -231,67 +241,67 @@ func TestAlertProvider_GetConfig(t *testing.T) {
 		{
 			Name: "provider-no-override-specify-no-group-should-default",
 			Provider: AlertProvider{
-				DefaultConfig: Config{ChannelID: "default", Project: "project", Token: "token"},
+				DefaultConfig: Config{TeamSecret: "team-secret-123"},
 				Overrides:     nil,
 			},
 			InputGroup:     "",
 			InputAlert:     alert.Alert{},
-			ExpectedOutput: Config{ChannelID: "default", Project: "project", Token: "token"},
+			ExpectedOutput: Config{TeamSecret: "team-secret-123"},
 		},
 		{
 			Name: "provider-no-override-specify-group-should-default",
 			Provider: AlertProvider{
-				DefaultConfig: Config{ChannelID: "default", Project: "project", Token: "token"},
+				DefaultConfig: Config{TeamSecret: "team-secret-123"},
 				Overrides:     nil,
 			},
 			InputGroup:     "group",
 			InputAlert:     alert.Alert{},
-			ExpectedOutput: Config{ChannelID: "default", Project: "project", Token: "token"},
+			ExpectedOutput: Config{TeamSecret: "team-secret-123"},
 		},
 		{
 			Name: "provider-with-override-specify-no-group-should-default",
 			Provider: AlertProvider{
-				DefaultConfig: Config{ChannelID: "default", Project: "project", Token: "token"},
+				DefaultConfig: Config{TeamSecret: "team-secret-123"},
 				Overrides: []Override{
 					{
 						Group:  "group",
-						Config: Config{ChannelID: "group-channel"},
+						Config: Config{TeamSecret: "team-secret-override"},
 					},
 				},
 			},
 			InputGroup:     "",
 			InputAlert:     alert.Alert{},
-			ExpectedOutput: Config{ChannelID: "default", Project: "project", Token: "token"},
+			ExpectedOutput: Config{TeamSecret: "team-secret-123"},
 		},
 		{
 			Name: "provider-with-override-specify-group-should-override",
 			Provider: AlertProvider{
-				DefaultConfig: Config{ChannelID: "default", Project: "project", Token: "token"},
+				DefaultConfig: Config{TeamSecret: "team-secret-123"},
 				Overrides: []Override{
 					{
 						Group:  "group",
-						Config: Config{ChannelID: "group-channel"},
+						Config: Config{TeamSecret: "team-secret-override"},
 					},
 				},
 			},
 			InputGroup:     "group",
 			InputAlert:     alert.Alert{},
-			ExpectedOutput: Config{ChannelID: "group-channel", Project: "project", Token: "token"},
+			ExpectedOutput: Config{TeamSecret: "team-secret-override"},
 		},
 		{
 			Name: "provider-with-group-override-and-alert-override--alert-override-should-take-precedence",
 			Provider: AlertProvider{
-				DefaultConfig: Config{ChannelID: "default", Project: "project", Token: "token"},
+				DefaultConfig: Config{TeamSecret: "team-secret-123"},
 				Overrides: []Override{
 					{
 						Group:  "group",
-						Config: Config{ChannelID: "group-channel"},
+						Config: Config{TeamSecret: "team-secret-override"},
 					},
 				},
 			},
 			InputGroup:     "group",
-			InputAlert:     alert.Alert{ProviderOverride: map[string]any{"channel-id": "alert-channel", "project": "alert-project", "token": "alert-token"}},
-			ExpectedOutput: Config{ChannelID: "alert-channel", Project: "alert-project", Token: "alert-token"},
+			InputAlert:     alert.Alert{ProviderOverride: map[string]any{"team-secret": "team-secret-alert"}},
+			ExpectedOutput: Config{TeamSecret: "team-secret-alert"},
 		},
 	}
 	for _, scenario := range scenarios {
@@ -300,14 +310,8 @@ func TestAlertProvider_GetConfig(t *testing.T) {
 			if err != nil {
 				t.Fatalf("unexpected error: %s", err)
 			}
-			if got.ChannelID != scenario.ExpectedOutput.ChannelID {
-				t.Errorf("expected %s, got %s", scenario.ExpectedOutput.ChannelID, got.ChannelID)
-			}
-			if got.Project != scenario.ExpectedOutput.Project {
-				t.Errorf("expected %s, got %s", scenario.ExpectedOutput.Project, got.Project)
-			}
-			if got.Token != scenario.ExpectedOutput.Token {
-				t.Errorf("expected %s, got %s", scenario.ExpectedOutput.Token, got.Token)
+			if got.TeamSecret != scenario.ExpectedOutput.TeamSecret {
+				t.Errorf("expected team secret to be %s, got %s", scenario.ExpectedOutput.TeamSecret, got.TeamSecret)
 			}
 			// Test ValidateOverrides as well, since it really just calls GetConfig
 			if err = scenario.Provider.ValidateOverrides(scenario.InputGroup, &scenario.InputAlert); err != nil {
@@ -316,3 +320,73 @@ func TestAlertProvider_GetConfig(t *testing.T) {
 		})
 	}
 }
+
+func TestAlertProvider_GetConfigWithInvalidAlertOverride(t *testing.T) {
+	// Test case 1: Empty override should be ignored, default config should be used
+	provider := AlertProvider{
+		DefaultConfig: Config{TeamSecret: "team-secret-123"},
+	}
+	alertWithEmptyOverride := alert.Alert{
+		ProviderOverride: map[string]any{"team-secret": ""},
+	}
+	cfg, err := provider.GetConfig("", &alertWithEmptyOverride)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
+	if cfg.TeamSecret != "team-secret-123" {
+		t.Errorf("expected team secret to remain default 'team-secret-123', got %s", cfg.TeamSecret)
+	}
+
+	// Test case 2: Invalid default config with no valid override should fail
+	providerWithInvalidDefault := AlertProvider{
+		DefaultConfig: Config{TeamSecret: ""},
+	}
+	alertWithEmptyOverride2 := alert.Alert{
+		ProviderOverride: map[string]any{"team-secret": ""},
+	}
+	_, err = providerWithInvalidDefault.GetConfig("", &alertWithEmptyOverride2)
+	if err == nil {
+		t.Error("expected error due to invalid default config, got none")
+	}
+	if err != ErrTeamSecretNotSet {
+		t.Errorf("expected ErrTeamSecretNotSet, got %v", err)
+	}
+}
+
+func TestAlertProvider_ValidateWithDuplicateGroupOverride(t *testing.T) {
+	providerWithDuplicateOverride := AlertProvider{
+		DefaultConfig: Config{TeamSecret: "team-secret-123"},
+		Overrides: []Override{
+			{
+				Group:  "group1",
+				Config: Config{TeamSecret: "team-secret-override-1"},
+			},
+			{
+				Group:  "group1",
+				Config: Config{TeamSecret: "team-secret-override-2"},
+			},
+		},
+	}
+	if err := providerWithDuplicateOverride.Validate(); err == nil {
+		t.Error("provider should not have been valid due to duplicate group override")
+	}
+	if err := providerWithDuplicateOverride.Validate(); err != ErrDuplicateGroupOverride {
+		t.Errorf("expected ErrDuplicateGroupOverride, got %v", providerWithDuplicateOverride.Validate())
+	}
+}
+
+func TestAlertProvider_ValidateOverridesWithInvalidAlert(t *testing.T) {
+	provider := AlertProvider{
+		DefaultConfig: Config{TeamSecret: ""},
+	}
+	alertWithEmptyOverride := alert.Alert{
+		ProviderOverride: map[string]any{"team-secret": ""},
+	}
+	err := provider.ValidateOverrides("", &alertWithEmptyOverride)
+	if err == nil {
+		t.Error("expected error due to invalid default config, got none")
+	}
+	if err != ErrTeamSecretNotSet {
+		t.Errorf("expected ErrTeamSecretNotSet, got %v", err)
+	}
+}

alerting/provider/slack/slack.go

@@ -20,7 +20,8 @@ var (
 )
 
 type Config struct {
-	WebhookURL string `yaml:"webhook-url"` // Slack webhook URL
+	WebhookURL string `yaml:"webhook-url"`     // Slack webhook URL
+	Title      string `yaml:"title,omitempty"` // Title of the message that will be sent
 }
 
 func (cfg *Config) Validate() error {
@@ -34,6 +35,9 @@ func (cfg *Config) Merge(override *Config) {
 	if len(override.WebhookURL) > 0 {
 		cfg.WebhookURL = override.WebhookURL
 	}
+	if len(override.Title) > 0 {
+		cfg.Title = override.Title
+	}
 }
 
 // AlertProvider is the configuration necessary for sending an alert using Slack
@@ -73,7 +77,7 @@ func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, r
 	if err != nil {
 		return err
 	}
-	buffer := bytes.NewBuffer(provider.buildRequestBody(ep, alert, result, resolved))
+	buffer := bytes.NewBuffer(provider.buildRequestBody(cfg, ep, alert, result, resolved))
 	request, err := http.NewRequest(http.MethodPost, cfg.WebhookURL, buffer)
 	if err != nil {
 		return err
@@ -111,7 +115,7 @@ type Field struct {
 }
 
 // buildRequestBody builds the request body for the provider
-func (provider *AlertProvider) buildRequestBody(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) []byte {
+func (provider *AlertProvider) buildRequestBody(cfg *Config, ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) []byte {
 	var message, color string
 	if resolved {
 		message = fmt.Sprintf("An alert for *%s* has been resolved after passing successfully %d time(s) in a row", ep.DisplayName(), alert.SuccessThreshold)
@@ -138,13 +142,16 @@ func (provider *AlertProvider) buildRequestBody(ep *endpoint.Endpoint, alert *al
 		Text: "",
 		Attachments: []Attachment{
 			{
-				Title: ":helmet_with_white_cross: Gatus",
+				Title: cfg.Title,
 				Text:  message + description,
 				Short: false,
 				Color: color,
 			},
 		},
 	}
+	if len(body.Attachments[0].Title) == 0 {
+		body.Attachments[0].Title = ":helmet_with_white_cross: Gatus"
+	}
 	if len(formattedConditionResults) > 0 {
 		body.Attachments[0].Fields = append(body.Attachments[0].Fields, Field{
 			Title: "Condition results",

alerting/provider/slack/slack_test.go

@@ -150,7 +150,7 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 	}{
 		{
 			Name:         "triggered",
-			Provider:     AlertProvider{},
+			Provider:     AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}},
 			Endpoint:     endpoint.Endpoint{Name: "name"},
 			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     false,
@@ -158,7 +158,7 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 		},
 		{
 			Name:         "triggered-with-group",
-			Provider:     AlertProvider{},
+			Provider:     AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}},
 			Endpoint:     endpoint.Endpoint{Name: "name", Group: "group"},
 			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     false,
@@ -167,7 +167,7 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 		{
 			Name:         "triggered-with-no-conditions",
 			NoConditions: true,
-			Provider:     AlertProvider{},
+			Provider:     AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}},
 			Endpoint:     endpoint.Endpoint{Name: "name"},
 			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     false,
@@ -175,7 +175,7 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 		},
 		{
 			Name:         "resolved",
-			Provider:     AlertProvider{},
+			Provider:     AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}},
 			Endpoint:     endpoint.Endpoint{Name: "name"},
 			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     true,
@@ -183,12 +183,20 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 		},
 		{
 			Name:         "resolved-with-group",
-			Provider:     AlertProvider{},
+			Provider:     AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}},
 			Endpoint:     endpoint.Endpoint{Name: "name", Group: "group"},
 			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     true,
 			ExpectedBody: "{\"text\":\"\",\"attachments\":[{\"title\":\":helmet_with_white_cross: Gatus\",\"text\":\"An alert for *group/name* has been resolved after passing successfully 5 time(s) in a row:\\n\\u003e description-2\",\"short\":false,\"color\":\"#36A64F\",\"fields\":[{\"title\":\"Condition results\",\"value\":\":white_check_mark: - `[CONNECTED] == true`\\n:white_check_mark: - `[STATUS] == 200`\\n\",\"short\":false}]}]}",
 		},
+		{
+			Name:         "resolved-with-group-and-custom-title",
+			Provider:     AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com", Title: "custom title"}},
+			Endpoint:     endpoint.Endpoint{Name: "name", Group: "group"},
+			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:     true,
+			ExpectedBody: "{\"text\":\"\",\"attachments\":[{\"title\":\"custom title\",\"text\":\"An alert for *group/name* has been resolved after passing successfully 5 time(s) in a row:\\n\\u003e description-2\",\"short\":false,\"color\":\"#36A64F\",\"fields\":[{\"title\":\"Condition results\",\"value\":\":white_check_mark: - `[CONNECTED] == true`\\n:white_check_mark: - `[STATUS] == 200`\\n\",\"short\":false}]}]}",
+		},
 	}
 	for _, scenario := range scenarios {
 		t.Run(scenario.Name, func(t *testing.T) {
@@ -199,7 +207,12 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 					{Condition: "[STATUS] == 200", Success: scenario.Resolved},
 				}
 			}
+			cfg, err := scenario.Provider.GetConfig(scenario.Endpoint.Group, &scenario.Alert)
+			if err != nil {
+				t.Fatal("couldn't get config:", err.Error())
+			}
 			body := scenario.Provider.buildRequestBody(
+				cfg,
 				&scenario.Endpoint,
 				&scenario.Alert,
 				&endpoint.Result{

alerting/provider/splunk/splunk.go

@@ -0,0 +1,220 @@
+package splunk
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"time"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"gopkg.in/yaml.v3"
+)
+
+var (
+	ErrHecURLNotSet           = errors.New("hec-url not set")
+	ErrHecTokenNotSet         = errors.New("hec-token not set")
+	ErrDuplicateGroupOverride = errors.New("duplicate group override")
+)
+
+type Config struct {
+	HecURL     string `yaml:"hec-url"`              // Splunk HEC (HTTP Event Collector) URL
+	HecToken   string `yaml:"hec-token"`            // Splunk HEC token
+	Source     string `yaml:"source,omitempty"`     // Event source
+	SourceType string `yaml:"sourcetype,omitempty"` // Event source type
+	Index      string `yaml:"index,omitempty"`      // Splunk index
+}
+
+func (cfg *Config) Validate() error {
+	if len(cfg.HecURL) == 0 {
+		return ErrHecURLNotSet
+	}
+	if len(cfg.HecToken) == 0 {
+		return ErrHecTokenNotSet
+	}
+	return nil
+}
+
+func (cfg *Config) Merge(override *Config) {
+	if len(override.HecURL) > 0 {
+		cfg.HecURL = override.HecURL
+	}
+	if len(override.HecToken) > 0 {
+		cfg.HecToken = override.HecToken
+	}
+	if len(override.Source) > 0 {
+		cfg.Source = override.Source
+	}
+	if len(override.SourceType) > 0 {
+		cfg.SourceType = override.SourceType
+	}
+	if len(override.Index) > 0 {
+		cfg.Index = override.Index
+	}
+}
+
+// AlertProvider is the configuration necessary for sending an alert using Splunk
+type AlertProvider struct {
+	DefaultConfig Config `yaml:",inline"`
+
+	// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
+	DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
+
+	// Overrides is a list of Override that may be prioritized over the default configuration
+	Overrides []Override `yaml:"overrides,omitempty"`
+}
+
+// Override is a case under which the default integration is overridden
+type Override struct {
+	Group  string `yaml:"group"`
+	Config `yaml:",inline"`
+}
+
+// Validate the provider's configuration
+func (provider *AlertProvider) Validate() error {
+	registeredGroups := make(map[string]bool)
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if isAlreadyRegistered := registeredGroups[override.Group]; isAlreadyRegistered || override.Group == "" {
+				return ErrDuplicateGroupOverride
+			}
+			registeredGroups[override.Group] = true
+		}
+	}
+	return provider.DefaultConfig.Validate()
+}
+
+// Send an alert using the provider
+func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) error {
+	cfg, err := provider.GetConfig(ep.Group, alert)
+	if err != nil {
+		return err
+	}
+	body, err := provider.buildRequestBody(cfg, ep, alert, result, resolved)
+	if err != nil {
+		return err
+	}
+	buffer := bytes.NewBuffer(body)
+	request, err := http.NewRequest(http.MethodPost, fmt.Sprintf("%s/services/collector/event", cfg.HecURL), buffer)
+	if err != nil {
+		return err
+	}
+	request.Header.Set("Content-Type", "application/json")
+	request.Header.Set("Authorization", fmt.Sprintf("Splunk %s", cfg.HecToken))
+	response, err := client.GetHTTPClient(nil).Do(request)
+	if err != nil {
+		return err
+	}
+	defer response.Body.Close()
+	if response.StatusCode >= 400 {
+		body, _ := io.ReadAll(response.Body)
+		return fmt.Errorf("call to splunk alert returned status code %d: %s", response.StatusCode, string(body))
+	}
+	return nil
+}
+
+type Body struct {
+	Time       int64  `json:"time"`
+	Source     string `json:"source,omitempty"`
+	SourceType string `json:"sourcetype,omitempty"`
+	Index      string `json:"index,omitempty"`
+	Event      Event  `json:"event"`
+}
+
+type Event struct {
+	AlertType   string                      `json:"alert_type"`
+	Endpoint    string                      `json:"endpoint"`
+	Group       string                      `json:"group,omitempty"`
+	Status      string                      `json:"status"`
+	Message     string                      `json:"message"`
+	Description string                      `json:"description,omitempty"`
+	Conditions  []*endpoint.ConditionResult `json:"conditions,omitempty"`
+}
+
+// buildRequestBody builds the request body for the provider
+func (provider *AlertProvider) buildRequestBody(cfg *Config, ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) ([]byte, error) {
+	var alertType, status, message string
+	if resolved {
+		alertType = "resolved"
+		status = "ok"
+		message = fmt.Sprintf("Alert for %s has been resolved after passing successfully %d time(s) in a row", ep.DisplayName(), alert.SuccessThreshold)
+	} else {
+		alertType = "triggered"
+		status = "critical"
+		message = fmt.Sprintf("Alert for %s has been triggered due to having failed %d time(s) in a row", ep.DisplayName(), alert.FailureThreshold)
+	}
+	event := Event{
+		AlertType:   alertType,
+		Endpoint:    ep.DisplayName(),
+		Group:       ep.Group,
+		Status:      status,
+		Message:     message,
+		Description: alert.GetDescription(),
+	}
+	if len(result.ConditionResults) > 0 {
+		event.Conditions = result.ConditionResults
+	}
+	body := Body{
+		Time:  time.Now().Unix(),
+		Event: event,
+	}
+	// Set optional fields
+	if cfg.Source != "" {
+		body.Source = cfg.Source
+	} else {
+		body.Source = "gatus"
+	}
+	if cfg.SourceType != "" {
+		body.SourceType = cfg.SourceType
+	} else {
+		body.SourceType = "gatus:alert"
+	}
+	if cfg.Index != "" {
+		body.Index = cfg.Index
+	}
+	bodyAsJSON, err := json.Marshal(body)
+	if err != nil {
+		return nil, err
+	}
+	return bodyAsJSON, nil
+}
+
+// GetDefaultAlert returns the provider's default alert configuration
+func (provider *AlertProvider) GetDefaultAlert() *alert.Alert {
+	return provider.DefaultAlert
+}
+
+// GetConfig returns the configuration for the provider with the overrides applied
+func (provider *AlertProvider) GetConfig(group string, alert *alert.Alert) (*Config, error) {
+	cfg := provider.DefaultConfig
+	// Handle group overrides
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if group == override.Group {
+				cfg.Merge(&override.Config)
+				break
+			}
+		}
+	}
+	// Handle alert overrides
+	if len(alert.ProviderOverride) != 0 {
+		overrideConfig := Config{}
+		if err := yaml.Unmarshal(alert.ProviderOverrideAsBytes(), &overrideConfig); err != nil {
+			return nil, err
+		}
+		cfg.Merge(&overrideConfig)
+	}
+	// Validate the configuration
+	err := cfg.Validate()
+	return &cfg, err
+}
+
+// ValidateOverrides validates the alert's provider override and, if present, the group override
+func (provider *AlertProvider) ValidateOverrides(group string, alert *alert.Alert) error {
+	_, err := provider.GetConfig(group, alert)
+	return err
+}

alerting/provider/splunk/splunk_test.go

@@ -0,0 +1,155 @@
+package splunk
+
+import (
+	"encoding/json"
+	"net/http"
+	"testing"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"github.com/TwiN/gatus/v5/test"
+)
+
+func TestAlertProvider_Validate(t *testing.T) {
+	scenarios := []struct {
+		name     string
+		provider AlertProvider
+		expected error
+	}{
+		{
+			name:     "valid",
+			provider: AlertProvider{DefaultConfig: Config{HecURL: "https://splunk.example.com:8088", HecToken: "token123"}},
+			expected: nil,
+		},
+		{
+			name:     "valid-with-index",
+			provider: AlertProvider{DefaultConfig: Config{HecURL: "https://splunk.example.com:8088", HecToken: "token123", Index: "main"}},
+			expected: nil,
+		},
+		{
+			name:     "invalid-hec-url",
+			provider: AlertProvider{DefaultConfig: Config{HecToken: "token123"}},
+			expected: ErrHecURLNotSet,
+		},
+		{
+			name:     "invalid-hec-token",
+			provider: AlertProvider{DefaultConfig: Config{HecURL: "https://splunk.example.com:8088"}},
+			expected: ErrHecTokenNotSet,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			err := scenario.provider.Validate()
+			if err != scenario.expected {
+				t.Errorf("expected %v, got %v", scenario.expected, err)
+			}
+		})
+	}
+}
+
+func TestAlertProvider_Send(t *testing.T) {
+	defer client.InjectHTTPClient(nil)
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		name             string
+		provider         AlertProvider
+		alert            alert.Alert
+		resolved         bool
+		mockRoundTripper test.MockRoundTripper
+		expectedError    bool
+	}{
+		{
+			name:     "triggered",
+			provider: AlertProvider{DefaultConfig: Config{HecURL: "https://splunk.example.com:8088", HecToken: "token123"}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				if r.URL.Path != "/services/collector/event" {
+					t.Errorf("expected path /services/collector/event, got %s", r.URL.Path)
+				}
+				if r.Header.Get("Authorization") != "Splunk token123" {
+					t.Errorf("expected Authorization header to be 'Splunk token123', got %s", r.Header.Get("Authorization"))
+				}
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				if body["time"] == nil {
+					t.Error("expected 'time' field in request body")
+				}
+				event := body["event"].(map[string]interface{})
+				if event["alert_type"] != "triggered" {
+					t.Errorf("expected alert_type to be 'triggered', got %v", event["alert_type"])
+				}
+				if event["status"] != "critical" {
+					t.Errorf("expected status to be 'critical', got %v", event["status"])
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "resolved",
+			provider: AlertProvider{DefaultConfig: Config{HecURL: "https://splunk.example.com:8088", HecToken: "token123", Index: "main"}},
+			alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: true,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				if body["index"] != "main" {
+					t.Errorf("expected index to be 'main', got %v", body["index"])
+				}
+				event := body["event"].(map[string]interface{})
+				if event["alert_type"] != "resolved" {
+					t.Errorf("expected alert_type to be 'resolved', got %v", event["alert_type"])
+				}
+				if event["status"] != "ok" {
+					t.Errorf("expected status to be 'ok', got %v", event["status"])
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "error-response",
+			provider: AlertProvider{DefaultConfig: Config{HecURL: "https://splunk.example.com:8088", HecToken: "token123"}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusForbidden, Body: http.NoBody}
+			}),
+			expectedError: true,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			client.InjectHTTPClient(&http.Client{Transport: scenario.mockRoundTripper})
+			err := scenario.provider.Send(
+				&endpoint.Endpoint{Name: "endpoint-name"},
+				&scenario.alert,
+				&endpoint.Result{
+					ConditionResults: []*endpoint.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.resolved},
+					},
+				},
+				scenario.resolved,
+			)
+			if scenario.expectedError && err == nil {
+				t.Error("expected error, got none")
+			}
+			if !scenario.expectedError && err != nil {
+				t.Error("expected no error, got", err.Error())
+			}
+		})
+	}
+}
+
+func TestAlertProvider_GetDefaultAlert(t *testing.T) {
+	if (&AlertProvider{DefaultAlert: &alert.Alert{}}).GetDefaultAlert() == nil {
+		t.Error("expected default alert to be not nil")
+	}
+	if (&AlertProvider{DefaultAlert: nil}).GetDefaultAlert() != nil {
+		t.Error("expected default alert to be nil")
+	}
+}

alerting/provider/squadcast/squadcast.go

@@ -0,0 +1,190 @@
+package squadcast
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"gopkg.in/yaml.v3"
+)
+
+var (
+	ErrWebhookURLNotSet       = errors.New("webhook-url not set")
+	ErrDuplicateGroupOverride = errors.New("duplicate group override")
+)
+
+type Config struct {
+	WebhookURL string `yaml:"webhook-url"` // Squadcast webhook URL
+}
+
+func (cfg *Config) Validate() error {
+	if len(cfg.WebhookURL) == 0 {
+		return ErrWebhookURLNotSet
+	}
+	return nil
+}
+
+func (cfg *Config) Merge(override *Config) {
+	if len(override.WebhookURL) > 0 {
+		cfg.WebhookURL = override.WebhookURL
+	}
+}
+
+// AlertProvider is the configuration necessary for sending an alert using Squadcast
+type AlertProvider struct {
+	DefaultConfig Config `yaml:",inline"`
+
+	// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
+	DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
+
+	// Overrides is a list of Override that may be prioritized over the default configuration
+	Overrides []Override `yaml:"overrides,omitempty"`
+}
+
+// Override is a case under which the default integration is overridden
+type Override struct {
+	Group  string `yaml:"group"`
+	Config `yaml:",inline"`
+}
+
+// Validate the provider's configuration
+func (provider *AlertProvider) Validate() error {
+	registeredGroups := make(map[string]bool)
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if isAlreadyRegistered := registeredGroups[override.Group]; isAlreadyRegistered || override.Group == "" {
+				return ErrDuplicateGroupOverride
+			}
+			registeredGroups[override.Group] = true
+		}
+	}
+	return provider.DefaultConfig.Validate()
+}
+
+// Send an alert using the provider
+func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) error {
+	cfg, err := provider.GetConfig(ep.Group, alert)
+	if err != nil {
+		return err
+	}
+	body, err := provider.buildRequestBody(ep, alert, result, resolved)
+	if err != nil {
+		return err
+	}
+	buffer := bytes.NewBuffer(body)
+	request, err := http.NewRequest(http.MethodPost, cfg.WebhookURL, buffer)
+	if err != nil {
+		return err
+	}
+	request.Header.Set("Content-Type", "application/json")
+	response, err := client.GetHTTPClient(nil).Do(request)
+	if err != nil {
+		return err
+	}
+	defer response.Body.Close()
+	if response.StatusCode >= 400 {
+		body, _ := io.ReadAll(response.Body)
+		return fmt.Errorf("call to squadcast alert returned status code %d: %s", response.StatusCode, string(body))
+	}
+	return nil
+}
+
+type Body struct {
+	Message     string            `json:"message"`
+	Description string            `json:"description,omitempty"`
+	EventID     string            `json:"event_id"`
+	Status      string            `json:"status"`
+	Tags        map[string]string `json:"tags,omitempty"`
+}
+
+// buildRequestBody builds the request body for the provider
+func (provider *AlertProvider) buildRequestBody(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) ([]byte, error) {
+	var message, status string
+	eventID := fmt.Sprintf("gatus-%s", ep.Key())
+	if resolved {
+		message = fmt.Sprintf("RESOLVED: %s", ep.DisplayName())
+		status = "resolve"
+	} else {
+		message = fmt.Sprintf("ALERT: %s", ep.DisplayName())
+		status = "trigger"
+	}
+	description := fmt.Sprintf("Endpoint: %s\n", ep.DisplayName())
+	if resolved {
+		description += fmt.Sprintf("Alert has been resolved after passing successfully %d time(s) in a row\n", alert.SuccessThreshold)
+	} else {
+		description += fmt.Sprintf("Endpoint has failed %d time(s) in a row\n", alert.FailureThreshold)
+	}
+	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
+		description += fmt.Sprintf("\nDescription: %s", alertDescription)
+	}
+	if len(result.ConditionResults) > 0 {
+		description += "\n\nCondition Results:"
+		for _, conditionResult := range result.ConditionResults {
+			var status string
+			if conditionResult.Success {
+				status = "✅"
+			} else {
+				status = "❌"
+			}
+			description += fmt.Sprintf("\n%s %s", status, conditionResult.Condition)
+		}
+	}
+	body := Body{
+		Message:     message,
+		Description: description,
+		EventID:     eventID,
+		Status:      status,
+		Tags: map[string]string{
+			"endpoint": ep.Name,
+			"group":    ep.Group,
+			"source":   "gatus",
+		},
+	}
+	bodyAsJSON, err := json.Marshal(body)
+	if err != nil {
+		return nil, err
+	}
+	return bodyAsJSON, nil
+}
+
+// GetDefaultAlert returns the provider's default alert configuration
+func (provider *AlertProvider) GetDefaultAlert() *alert.Alert {
+	return provider.DefaultAlert
+}
+
+// GetConfig returns the configuration for the provider with the overrides applied
+func (provider *AlertProvider) GetConfig(group string, alert *alert.Alert) (*Config, error) {
+	cfg := provider.DefaultConfig
+	// Handle group overrides
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if group == override.Group {
+				cfg.Merge(&override.Config)
+				break
+			}
+		}
+	}
+	// Handle alert overrides
+	if len(alert.ProviderOverride) != 0 {
+		overrideConfig := Config{}
+		if err := yaml.Unmarshal(alert.ProviderOverrideAsBytes(), &overrideConfig); err != nil {
+			return nil, err
+		}
+		cfg.Merge(&overrideConfig)
+	}
+	// Validate the configuration
+	err := cfg.Validate()
+	return &cfg, err
+}
+
+// ValidateOverrides validates the alert's provider override and, if present, the group override
+func (provider *AlertProvider) ValidateOverrides(group string, alert *alert.Alert) error {
+	_, err := provider.GetConfig(group, alert)
+	return err
+}

alerting/provider/squadcast/squadcast_test.go

@@ -0,0 +1,141 @@
+package squadcast
+
+import (
+	"encoding/json"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"github.com/TwiN/gatus/v5/test"
+)
+
+func TestAlertProvider_Validate(t *testing.T) {
+	scenarios := []struct {
+		name     string
+		provider AlertProvider
+		expected error
+	}{
+		{
+			name:     "valid",
+			provider: AlertProvider{DefaultConfig: Config{WebhookURL: "https://api.squadcast.com/v3/incidents/api/abcd1234"}},
+			expected: nil,
+		},
+		{
+			name:     "invalid-webhook-url",
+			provider: AlertProvider{DefaultConfig: Config{}},
+			expected: ErrWebhookURLNotSet,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			err := scenario.provider.Validate()
+			if err != scenario.expected {
+				t.Errorf("expected %v, got %v", scenario.expected, err)
+			}
+		})
+	}
+}
+
+func TestAlertProvider_Send(t *testing.T) {
+	defer client.InjectHTTPClient(nil)
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		name             string
+		provider         AlertProvider
+		alert            alert.Alert
+		resolved         bool
+		mockRoundTripper test.MockRoundTripper
+		expectedError    bool
+	}{
+		{
+			name:     "triggered",
+			provider: AlertProvider{DefaultConfig: Config{WebhookURL: "https://api.squadcast.com/v3/incidents/api/abcd1234"}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				if body["status"] != "trigger" {
+					t.Errorf("expected status to be 'trigger', got %v", body["status"])
+				}
+				if body["event_id"] == nil {
+					t.Error("expected 'event_id' field in request body")
+				}
+				message := body["message"].(string)
+				if !strings.Contains(message, "ALERT") {
+					t.Errorf("expected message to contain 'ALERT', got %s", message)
+				}
+				description := body["description"].(string)
+				if !strings.Contains(description, "failed 3 time(s)") {
+					t.Errorf("expected description to contain failure count, got %s", description)
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "resolved",
+			provider: AlertProvider{DefaultConfig: Config{WebhookURL: "https://api.squadcast.com/v3/incidents/api/abcd1234"}},
+			alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: true,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				if body["status"] != "resolve" {
+					t.Errorf("expected status to be 'resolve', got %v", body["status"])
+				}
+				message := body["message"].(string)
+				if !strings.Contains(message, "RESOLVED") {
+					t.Errorf("expected message to contain 'RESOLVED', got %s", message)
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "error-response",
+			provider: AlertProvider{DefaultConfig: Config{WebhookURL: "https://api.squadcast.com/v3/incidents/api/abcd1234"}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusUnauthorized, Body: http.NoBody}
+			}),
+			expectedError: true,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			client.InjectHTTPClient(&http.Client{Transport: scenario.mockRoundTripper})
+			err := scenario.provider.Send(
+				&endpoint.Endpoint{Name: "endpoint-name"},
+				&scenario.alert,
+				&endpoint.Result{
+					ConditionResults: []*endpoint.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.resolved},
+					},
+				},
+				scenario.resolved,
+			)
+			if scenario.expectedError && err == nil {
+				t.Error("expected error, got none")
+			}
+			if !scenario.expectedError && err != nil {
+				t.Error("expected no error, got", err.Error())
+			}
+		})
+	}
+}
+
+func TestAlertProvider_GetDefaultAlert(t *testing.T) {
+	if (&AlertProvider{DefaultAlert: &alert.Alert{}}).GetDefaultAlert() == nil {
+		t.Error("expected default alert to be not nil")
+	}
+	if (&AlertProvider{DefaultAlert: nil}).GetDefaultAlert() != nil {
+		t.Error("expected default alert to be nil")
+	}
+}

alerting/provider/teamsworkflows/teamsworkflows.go

@@ -166,7 +166,10 @@ func (provider *AlertProvider) buildRequestBody(cfg *Config, ep *endpoint.Endpoi
 			Value: conditionResult.Condition,
 		})
 	}
-
+	var description string
+	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
+		description = "**Description**: " + alertDescription
+	}
 	cardContent := AdaptiveCardBody{
 		Type:    "AdaptiveCard",
 		Version: "1.4", // Version 1.5 and 1.6 doesn't seem to be supported by Teams as of 27/08/2024
@@ -190,6 +193,11 @@ func (provider *AlertProvider) buildRequestBody(cfg *Config, ep *endpoint.Endpoi
 								Text: message,
 								Wrap: true,
 							},
+							{
+								Type: "TextBlock",
+								Text: description,
+								Wrap: true,
+							},
 							{
 								Type:  "FactSet",
 								Facts: facts,

alerting/provider/teamsworkflows/teamsworkflows_test.go

@@ -152,14 +152,14 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 			Provider:     AlertProvider{},
 			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     false,
-			ExpectedBody: "{\"attachments\":[{\"content\":{\"type\":\"AdaptiveCard\",\"version\":\"1.4\",\"body\":[{\"type\":\"Container\",\"wrap\":false,\"items\":[{\"type\":\"Container\",\"wrap\":false,\"items\":[{\"type\":\"TextBlock\",\"text\":\"⛑️ Gatus\",\"wrap\":false,\"size\":\"Medium\",\"weight\":\"Bolder\"},{\"type\":\"TextBlock\",\"text\":\"An alert for **endpoint-name** has been triggered due to having failed 3 time(s) in a row.\",\"wrap\":true},{\"type\":\"FactSet\",\"wrap\":false,\"facts\":[{\"title\":\"❌\",\"value\":\"[CONNECTED] == true\"},{\"title\":\"❌\",\"value\":\"[STATUS] == 200\"}]}],\"style\":\"Default\"}],\"style\":\"Attention\"}],\"msteams\":{\"width\":\"Full\"}},\"contentType\":\"application/vnd.microsoft.card.adaptive\"}],\"type\":\"message\"}",
+			ExpectedBody: "{\"attachments\":[{\"content\":{\"type\":\"AdaptiveCard\",\"version\":\"1.4\",\"body\":[{\"type\":\"Container\",\"wrap\":false,\"items\":[{\"type\":\"Container\",\"wrap\":false,\"items\":[{\"type\":\"TextBlock\",\"text\":\"⛑️ Gatus\",\"wrap\":false,\"size\":\"Medium\",\"weight\":\"Bolder\"},{\"type\":\"TextBlock\",\"text\":\"An alert for **endpoint-name** has been triggered due to having failed 3 time(s) in a row.\",\"wrap\":true},{\"type\":\"TextBlock\",\"text\":\"**Description**: description-1\",\"wrap\":true},{\"type\":\"FactSet\",\"wrap\":false,\"facts\":[{\"title\":\"❌\",\"value\":\"[CONNECTED] == true\"},{\"title\":\"❌\",\"value\":\"[STATUS] == 200\"}]}],\"style\":\"Default\"}],\"style\":\"Attention\"}],\"msteams\":{\"width\":\"Full\"}},\"contentType\":\"application/vnd.microsoft.card.adaptive\"}],\"type\":\"message\"}",
 		},
 		{
 			Name:         "resolved",
 			Provider:     AlertProvider{},
 			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     true,
-			ExpectedBody: "{\"attachments\":[{\"content\":{\"type\":\"AdaptiveCard\",\"version\":\"1.4\",\"body\":[{\"type\":\"Container\",\"wrap\":false,\"items\":[{\"type\":\"Container\",\"wrap\":false,\"items\":[{\"type\":\"TextBlock\",\"text\":\"⛑️ Gatus\",\"wrap\":false,\"size\":\"Medium\",\"weight\":\"Bolder\"},{\"type\":\"TextBlock\",\"text\":\"An alert for **endpoint-name** has been resolved after passing successfully 5 time(s) in a row.\",\"wrap\":true},{\"type\":\"FactSet\",\"wrap\":false,\"facts\":[{\"title\":\"✅\",\"value\":\"[CONNECTED] == true\"},{\"title\":\"✅\",\"value\":\"[STATUS] == 200\"}]}],\"style\":\"Default\"}],\"style\":\"Good\"}],\"msteams\":{\"width\":\"Full\"}},\"contentType\":\"application/vnd.microsoft.card.adaptive\"}],\"type\":\"message\"}",
+			ExpectedBody: "{\"attachments\":[{\"content\":{\"type\":\"AdaptiveCard\",\"version\":\"1.4\",\"body\":[{\"type\":\"Container\",\"wrap\":false,\"items\":[{\"type\":\"Container\",\"wrap\":false,\"items\":[{\"type\":\"TextBlock\",\"text\":\"⛑️ Gatus\",\"wrap\":false,\"size\":\"Medium\",\"weight\":\"Bolder\"},{\"type\":\"TextBlock\",\"text\":\"An alert for **endpoint-name** has been resolved after passing successfully 5 time(s) in a row.\",\"wrap\":true},{\"type\":\"TextBlock\",\"text\":\"**Description**: description-2\",\"wrap\":true},{\"type\":\"FactSet\",\"wrap\":false,\"facts\":[{\"title\":\"✅\",\"value\":\"[CONNECTED] == true\"},{\"title\":\"✅\",\"value\":\"[STATUS] == 200\"}]}],\"style\":\"Default\"}],\"style\":\"Good\"}],\"msteams\":{\"width\":\"Full\"}},\"contentType\":\"application/vnd.microsoft.card.adaptive\"}],\"type\":\"message\"}",
 		},
 		{
 			Name:         "resolved-with-no-conditions",
@@ -167,7 +167,7 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 			Provider:     AlertProvider{},
 			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     true,
-			ExpectedBody: "{\"attachments\":[{\"content\":{\"type\":\"AdaptiveCard\",\"version\":\"1.4\",\"body\":[{\"type\":\"Container\",\"wrap\":false,\"items\":[{\"type\":\"Container\",\"wrap\":false,\"items\":[{\"type\":\"TextBlock\",\"text\":\"⛑️ Gatus\",\"wrap\":false,\"size\":\"Medium\",\"weight\":\"Bolder\"},{\"type\":\"TextBlock\",\"text\":\"An alert for **endpoint-name** has been resolved after passing successfully 5 time(s) in a row.\",\"wrap\":true},{\"type\":\"FactSet\",\"wrap\":false}],\"style\":\"Default\"}],\"style\":\"Good\"}],\"msteams\":{\"width\":\"Full\"}},\"contentType\":\"application/vnd.microsoft.card.adaptive\"}],\"type\":\"message\"}",
+			ExpectedBody: "{\"attachments\":[{\"content\":{\"type\":\"AdaptiveCard\",\"version\":\"1.4\",\"body\":[{\"type\":\"Container\",\"wrap\":false,\"items\":[{\"type\":\"Container\",\"wrap\":false,\"items\":[{\"type\":\"TextBlock\",\"text\":\"⛑️ Gatus\",\"wrap\":false,\"size\":\"Medium\",\"weight\":\"Bolder\"},{\"type\":\"TextBlock\",\"text\":\"An alert for **endpoint-name** has been resolved after passing successfully 5 time(s) in a row.\",\"wrap\":true},{\"type\":\"TextBlock\",\"text\":\"**Description**: description-2\",\"wrap\":true},{\"type\":\"FactSet\",\"wrap\":false}],\"style\":\"Default\"}],\"style\":\"Good\"}],\"msteams\":{\"width\":\"Full\"}},\"contentType\":\"application/vnd.microsoft.card.adaptive\"}],\"type\":\"message\"}",
 		},
 	}
 	for _, scenario := range scenarios {

alerting/provider/telegram/telegram.go

@@ -14,7 +14,7 @@ import (
 	"gopkg.in/yaml.v3"
 )
 
-const defaultApiUrl = "https://api.telegram.org"
+const ApiURL = "https://api.telegram.org"
 
 var (
 	ErrTokenNotSet            = errors.New("token not set")
@@ -33,7 +33,7 @@ type Config struct {
 
 func (cfg *Config) Validate() error {
 	if len(cfg.ApiUrl) == 0 {
-		cfg.ApiUrl = defaultApiUrl
+		cfg.ApiUrl = ApiURL
 	}
 	if len(cfg.Token) == 0 {
 		return ErrTokenNotSet
@@ -147,7 +147,7 @@ func (provider *AlertProvider) buildRequestBody(cfg *Config, ep *endpoint.Endpoi
 	}
 	var text string
 	if len(alert.GetDescription()) > 0 {
-		text = fmt.Sprintf("⛑ *Gatus* \n%s \n*Description* \n_%s_  \n%s", message, alert.GetDescription(), formattedConditionResults)
+		text = fmt.Sprintf("⛑ *Gatus* \n%s \n*Description* \n%s  \n%s", message, alert.GetDescription(), formattedConditionResults)
 	} else {
 		text = fmt.Sprintf("⛑ *Gatus* \n%s%s", message, formattedConditionResults)
 	}

alerting/provider/telegram/telegram_test.go

@@ -124,6 +124,7 @@ func TestAlertProvider_Send(t *testing.T) {
 func TestAlertProvider_buildRequestBody(t *testing.T) {
 	firstDescription := "description-1"
 	secondDescription := "description-2"
+	descriptionWithLink := "[link](https://example.org/)"
 	scenarios := []struct {
 		Name         string
 		Provider     AlertProvider
@@ -137,14 +138,14 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 			Provider:     AlertProvider{DefaultConfig: Config{ID: "123"}},
 			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     false,
-			ExpectedBody: "{\"chat_id\":\"123\",\"text\":\"⛑ *Gatus* \\nAn alert for *endpoint-name* has been triggered:\\n—\\n    _healthcheck failed 3 time(s) in a row_\\n—   \\n*Description* \\n_description-1_  \\n\\n*Condition results*\\n❌ - `[CONNECTED] == true`\\n❌ - `[STATUS] == 200`\\n\",\"parse_mode\":\"MARKDOWN\"}",
+			ExpectedBody: "{\"chat_id\":\"123\",\"text\":\"⛑ *Gatus* \\nAn alert for *endpoint-name* has been triggered:\\n—\\n    _healthcheck failed 3 time(s) in a row_\\n—   \\n*Description* \\ndescription-1  \\n\\n*Condition results*\\n❌ - `[CONNECTED] == true`\\n❌ - `[STATUS] == 200`\\n\",\"parse_mode\":\"MARKDOWN\"}",
 		},
 		{
 			Name:         "resolved",
 			Provider:     AlertProvider{DefaultConfig: Config{ID: "123"}},
 			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     true,
-			ExpectedBody: "{\"chat_id\":\"123\",\"text\":\"⛑ *Gatus* \\nAn alert for *endpoint-name* has been resolved:\\n—\\n    _healthcheck passing successfully 5 time(s) in a row_\\n—   \\n*Description* \\n_description-2_  \\n\\n*Condition results*\\n✅ - `[CONNECTED] == true`\\n✅ - `[STATUS] == 200`\\n\",\"parse_mode\":\"MARKDOWN\"}",
+			ExpectedBody: "{\"chat_id\":\"123\",\"text\":\"⛑ *Gatus* \\nAn alert for *endpoint-name* has been resolved:\\n—\\n    _healthcheck passing successfully 5 time(s) in a row_\\n—   \\n*Description* \\ndescription-2  \\n\\n*Condition results*\\n✅ - `[CONNECTED] == true`\\n✅ - `[STATUS] == 200`\\n\",\"parse_mode\":\"MARKDOWN\"}",
 		},
 		{
 			Name:         "resolved-with-no-conditions",
@@ -152,14 +153,21 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 			Provider:     AlertProvider{DefaultConfig: Config{ID: "123"}},
 			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     true,
-			ExpectedBody: "{\"chat_id\":\"123\",\"text\":\"⛑ *Gatus* \\nAn alert for *endpoint-name* has been resolved:\\n—\\n    _healthcheck passing successfully 5 time(s) in a row_\\n—   \\n*Description* \\n_description-2_  \\n\",\"parse_mode\":\"MARKDOWN\"}",
+			ExpectedBody: "{\"chat_id\":\"123\",\"text\":\"⛑ *Gatus* \\nAn alert for *endpoint-name* has been resolved:\\n—\\n    _healthcheck passing successfully 5 time(s) in a row_\\n—   \\n*Description* \\ndescription-2  \\n\",\"parse_mode\":\"MARKDOWN\"}",
 		},
 		{
 			Name:         "send to topic",
 			Provider:     AlertProvider{DefaultConfig: Config{ID: "123", TopicID: "7"}},
 			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     false,
-			ExpectedBody: "{\"chat_id\":\"123\",\"text\":\"⛑ *Gatus* \\nAn alert for *endpoint-name* has been triggered:\\n—\\n    _healthcheck failed 3 time(s) in a row_\\n—   \\n*Description* \\n_description-1_  \\n\\n*Condition results*\\n❌ - `[CONNECTED] == true`\\n❌ - `[STATUS] == 200`\\n\",\"parse_mode\":\"MARKDOWN\",\"message_thread_id\":\"7\"}",
+			ExpectedBody: "{\"chat_id\":\"123\",\"text\":\"⛑ *Gatus* \\nAn alert for *endpoint-name* has been triggered:\\n—\\n    _healthcheck failed 3 time(s) in a row_\\n—   \\n*Description* \\ndescription-1  \\n\\n*Condition results*\\n❌ - `[CONNECTED] == true`\\n❌ - `[STATUS] == 200`\\n\",\"parse_mode\":\"MARKDOWN\",\"message_thread_id\":\"7\"}",
+		},
+		{
+			Name:         "triggered with link in description",
+			Provider:     AlertProvider{DefaultConfig: Config{ID: "123"}},
+			Alert:        alert.Alert{Description: &descriptionWithLink, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:     false,
+			ExpectedBody: "{\"chat_id\":\"123\",\"text\":\"⛑ *Gatus* \\nAn alert for *endpoint-name* has been triggered:\\n—\\n    _healthcheck failed 3 time(s) in a row_\\n—   \\n*Description* \\n[link](https://example.org/)  \\n\\n*Condition results*\\n❌ - `[CONNECTED] == true`\\n❌ - `[STATUS] == 200`\\n\",\"parse_mode\":\"MARKDOWN\"}",
 		},
 	}
 	for _, scenario := range scenarios {

alerting/provider/twilio/twilio.go

@@ -29,8 +29,10 @@ type Config struct {
 	From  string `yaml:"from"`
 	To    string `yaml:"to"`
 
+	// TODO in v6.0.0: Rename this to text-triggered
 	TextTwilioTriggered string `yaml:"text-twilio-triggered,omitempty"` // String used in the SMS body and subject (optional)
-	TextTwilioResolved  string `yaml:"text-twilio-resolved,omitempty"`  // String used in the SMS body and subject (optional)
+	// TODO in v6.0.0: Rename this to text-resolved
+	TextTwilioResolved string `yaml:"text-twilio-resolved,omitempty"` // String used in the SMS body and subject (optional)
 }
 
 func (cfg *Config) Validate() error {
@@ -113,13 +115,23 @@ func (provider *AlertProvider) buildRequestBody(cfg *Config, ep *endpoint.Endpoi
 	var message string
 	if resolved {
 		if len(cfg.TextTwilioResolved) > 0 {
-			message = strings.Replace(strings.Replace(cfg.TextTwilioResolved, "{endpoint}", ep.DisplayName(), 1), "{description}", alert.GetDescription(), 1)
+			// Support both old {endpoint}/{description} and new [ENDPOINT]/[ALERT_DESCRIPTION] formats
+			message = cfg.TextTwilioResolved
+			message = strings.Replace(message, "{endpoint}", ep.DisplayName(), 1)
+			message = strings.Replace(message, "{description}", alert.GetDescription(), 1)
+			message = strings.Replace(message, "[ENDPOINT]", ep.DisplayName(), 1)
+			message = strings.Replace(message, "[ALERT_DESCRIPTION]", alert.GetDescription(), 1)
 		} else {
 			message = fmt.Sprintf("RESOLVED: %s - %s", ep.DisplayName(), alert.GetDescription())
 		}
 	} else {
 		if len(cfg.TextTwilioTriggered) > 0 {
-			message = strings.Replace(strings.Replace(cfg.TextTwilioTriggered, "{endpoint}", ep.DisplayName(), 1), "{description}", alert.GetDescription(), 1)
+			// Support both old {endpoint}/{description} and new [ENDPOINT]/[ALERT_DESCRIPTION] formats
+			message = cfg.TextTwilioTriggered
+			message = strings.Replace(message, "{endpoint}", ep.DisplayName(), 1)
+			message = strings.Replace(message, "{description}", alert.GetDescription(), 1)
+			message = strings.Replace(message, "[ENDPOINT]", ep.DisplayName(), 1)
+			message = strings.Replace(message, "[ALERT_DESCRIPTION]", alert.GetDescription(), 1)
 		} else {
 			message = fmt.Sprintf("TRIGGERED: %s - %s", ep.DisplayName(), alert.GetDescription())
 		}

alerting/provider/twilio/twilio_test.go

@@ -129,6 +129,27 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 			Resolved:     true,
 			ExpectedBody: "Body=RESOLVED%3A+endpoint-name+-+description-2&From=3&To=4",
 		},
+		{
+			Name:         "triggered-with-old-placeholders",
+			Provider:     AlertProvider{DefaultConfig: Config{SID: "1", Token: "2", From: "3", To: "4", TextTwilioTriggered: "Alert: {endpoint} - {description}"}},
+			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:     false,
+			ExpectedBody: "Body=Alert%3A+endpoint-name+-+description-1&From=3&To=4",
+		},
+		{
+			Name:         "triggered-with-new-placeholders",
+			Provider:     AlertProvider{DefaultConfig: Config{SID: "1", Token: "2", From: "3", To: "4", TextTwilioTriggered: "Alert: [ENDPOINT] - [ALERT_DESCRIPTION]"}},
+			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:     false,
+			ExpectedBody: "Body=Alert%3A+endpoint-name+-+description-1&From=3&To=4",
+		},
+		{
+			Name:         "resolved-with-mixed-placeholders",
+			Provider:     AlertProvider{DefaultConfig: Config{SID: "1", Token: "2", From: "3", To: "4", TextTwilioResolved: "Resolved: {endpoint} and [ENDPOINT] - {description} and [ALERT_DESCRIPTION]"}},
+			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:     true,
+			ExpectedBody: "Body=Resolved%3A+endpoint-name+and+endpoint-name+-+description-2+and+description-2&From=3&To=4",
+		},
 	}
 	for _, scenario := range scenarios {
 		t.Run(scenario.Name, func(t *testing.T) {

alerting/provider/vonage/vonage.go

@@ -0,0 +1,212 @@
+package vonage
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"gopkg.in/yaml.v3"
+)
+
+const ApiURL = "https://rest.nexmo.com/sms/json"
+
+var (
+	ErrAPIKeyNotSet           = errors.New("api-key not set")
+	ErrAPISecretNotSet        = errors.New("api-secret not set")
+	ErrFromNotSet             = errors.New("from not set")
+	ErrToNotSet               = errors.New("to not set")
+	ErrDuplicateGroupOverride = errors.New("duplicate group override")
+)
+
+type Config struct {
+	APIKey    string   `yaml:"api-key"`
+	APISecret string   `yaml:"api-secret"`
+	From      string   `yaml:"from"`
+	To        []string `yaml:"to"`
+}
+
+func (cfg *Config) Validate() error {
+	if len(cfg.APIKey) == 0 {
+		return ErrAPIKeyNotSet
+	}
+	if len(cfg.APISecret) == 0 {
+		return ErrAPISecretNotSet
+	}
+	if len(cfg.From) == 0 {
+		return ErrFromNotSet
+	}
+	if len(cfg.To) == 0 {
+		return ErrToNotSet
+	}
+	return nil
+}
+
+func (cfg *Config) Merge(override *Config) {
+	if len(override.APIKey) > 0 {
+		cfg.APIKey = override.APIKey
+	}
+	if len(override.APISecret) > 0 {
+		cfg.APISecret = override.APISecret
+	}
+	if len(override.From) > 0 {
+		cfg.From = override.From
+	}
+	if len(override.To) > 0 {
+		cfg.To = override.To
+	}
+}
+
+// AlertProvider is the configuration necessary for sending an alert using Vonage
+type AlertProvider struct {
+	DefaultConfig Config `yaml:",inline"`
+
+	// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
+	DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
+
+	// Overrides is a list of Override that may be prioritized over the default configuration
+	Overrides []Override `yaml:"overrides,omitempty"`
+}
+
+// Override is a case under which the default integration is overridden
+type Override struct {
+	Group  string `yaml:"group"`
+	Config `yaml:",inline"`
+}
+
+// Validate the provider's configuration
+func (provider *AlertProvider) Validate() error {
+	registeredGroups := make(map[string]bool)
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if isAlreadyRegistered := registeredGroups[override.Group]; isAlreadyRegistered || override.Group == "" {
+				return ErrDuplicateGroupOverride
+			}
+			registeredGroups[override.Group] = true
+		}
+	}
+	return provider.DefaultConfig.Validate()
+}
+
+// Send an alert using the provider
+func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) error {
+	cfg, err := provider.GetConfig(ep.Group, alert)
+	if err != nil {
+		return err
+	}
+	message := provider.buildMessage(cfg, ep, alert, result, resolved)
+
+	// Send SMS to each recipient
+	for _, recipient := range cfg.To {
+		if err := provider.sendSMS(cfg, recipient, message); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// sendSMS sends an individual SMS message
+func (provider *AlertProvider) sendSMS(cfg *Config, to, message string) error {
+	data := url.Values{}
+	data.Set("api_key", cfg.APIKey)
+	data.Set("api_secret", cfg.APISecret)
+	data.Set("from", cfg.From)
+	data.Set("to", to)
+	data.Set("text", message)
+	request, err := http.NewRequest(http.MethodPost, ApiURL, strings.NewReader(data.Encode()))
+	if err != nil {
+		return err
+	}
+	request.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	response, err := client.GetHTTPClient(nil).Do(request)
+	if err != nil {
+		return err
+	}
+	defer response.Body.Close()
+	// Read response body once and use it for both error handling and JSON processing
+	body, err := io.ReadAll(response.Body)
+	if err != nil {
+		return err
+	}
+	if response.StatusCode >= 400 {
+		return fmt.Errorf("call to vonage alert returned status code %d: %s", response.StatusCode, string(body))
+	}
+	// Check response for errors in messages array
+	var vonageResponse Response
+	if err := json.Unmarshal(body, &vonageResponse); err != nil {
+		return err
+	}
+	// Check if any message failed
+	for _, msg := range vonageResponse.Messages {
+		if msg.Status != "0" {
+			return fmt.Errorf("vonage SMS failed with status %s: %s", msg.Status, msg.ErrorText)
+		}
+	}
+	return nil
+}
+
+type Response struct {
+	MessageCount string    `json:"message-count"`
+	Messages     []Message `json:"messages"`
+}
+
+type Message struct {
+	To               string `json:"to"`
+	MessageID        string `json:"message-id"`
+	Status           string `json:"status"`
+	ErrorText        string `json:"error-text"`
+	RemainingBalance string `json:"remaining-balance"`
+	MessagePrice     string `json:"message-price"`
+	Network          string `json:"network"`
+}
+
+// buildMessage builds the SMS message content
+func (provider *AlertProvider) buildMessage(cfg *Config, ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) string {
+	if resolved {
+		return fmt.Sprintf("RESOLVED: %s - %s", ep.DisplayName(), alert.GetDescription())
+	} else {
+		return fmt.Sprintf("TRIGGERED: %s - %s", ep.DisplayName(), alert.GetDescription())
+	}
+}
+
+// GetDefaultAlert returns the provider's default alert configuration
+func (provider *AlertProvider) GetDefaultAlert() *alert.Alert {
+	return provider.DefaultAlert
+}
+
+// GetConfig returns the configuration for the provider with the overrides applied
+func (provider *AlertProvider) GetConfig(group string, alert *alert.Alert) (*Config, error) {
+	cfg := provider.DefaultConfig
+	// Handle group overrides
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if group == override.Group {
+				cfg.Merge(&override.Config)
+				break
+			}
+		}
+	}
+	// Handle alert overrides
+	if len(alert.ProviderOverride) != 0 {
+		overrideConfig := Config{}
+		if err := yaml.Unmarshal(alert.ProviderOverrideAsBytes(), &overrideConfig); err != nil {
+			return nil, err
+		}
+		cfg.Merge(&overrideConfig)
+	}
+	// Validate the configuration
+	err := cfg.Validate()
+	return &cfg, err
+}
+
+// ValidateOverrides validates the alert's provider override and, if present, the group override
+func (provider *AlertProvider) ValidateOverrides(group string, alert *alert.Alert) error {
+	_, err := provider.GetConfig(group, alert)
+	return err
+}

alerting/provider/vonage/vonage_test.go

@@ -0,0 +1,546 @@
+package vonage
+
+import (
+	"io"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"github.com/TwiN/gatus/v5/test"
+)
+
+func TestVonageAlertProvider_IsValid(t *testing.T) {
+	invalidProvider := AlertProvider{}
+	if err := invalidProvider.Validate(); err == nil {
+		t.Error("provider shouldn't have been valid")
+	}
+	validProvider := AlertProvider{
+		DefaultConfig: Config{
+			APIKey:    "test-key",
+			APISecret: "test-secret",
+			From:      "Gatus",
+			To:        []string{"+1234567890"},
+		},
+	}
+	if err := validProvider.Validate(); err != nil {
+		t.Error("provider should've been valid")
+	}
+}
+
+func TestVonageAlertProvider_IsValidWithOverride(t *testing.T) {
+	validProvider := AlertProvider{
+		DefaultConfig: Config{
+			APIKey:    "test-key",
+			APISecret: "test-secret",
+			From:      "Gatus",
+			To:        []string{"+1234567890"},
+		},
+		Overrides: []Override{
+			{
+				Group: "test-group",
+				Config: Config{
+					APIKey:    "override-key",
+					APISecret: "override-secret",
+					From:      "Override",
+					To:        []string{"+9876543210"},
+				},
+			},
+		},
+	}
+	if err := validProvider.Validate(); err != nil {
+		t.Error("provider should've been valid")
+	}
+}
+
+func TestVonageAlertProvider_IsNotValidWithInvalidOverrideGroup(t *testing.T) {
+	invalidProvider := AlertProvider{
+		DefaultConfig: Config{
+			APIKey:    "test-key",
+			APISecret: "test-secret",
+			From:      "Gatus",
+			To:        []string{"+1234567890"},
+		},
+		Overrides: []Override{
+			{
+				Group: "",
+				Config: Config{
+					APIKey:    "override-key",
+					APISecret: "override-secret",
+					From:      "Override",
+					To:        []string{"+9876543210"},
+				},
+			},
+		},
+	}
+	if err := invalidProvider.Validate(); err == nil {
+		t.Error("provider shouldn't have been valid")
+	}
+}
+
+func TestVonageAlertProvider_IsNotValidWithDuplicateOverrideGroup(t *testing.T) {
+	invalidProvider := AlertProvider{
+		DefaultConfig: Config{
+			APIKey:    "test-key",
+			APISecret: "test-secret",
+			From:      "Gatus",
+			To:        []string{"+1234567890"},
+		},
+		Overrides: []Override{
+			{
+				Group: "test-group",
+				Config: Config{
+					APIKey:    "override-key1",
+					APISecret: "override-secret1",
+					From:      "Override1",
+					To:        []string{"+9876543210"},
+				},
+			},
+			{
+				Group: "test-group",
+				Config: Config{
+					APIKey:    "override-key2",
+					APISecret: "override-secret2",
+					From:      "Override2",
+					To:        []string{"+1234567890"},
+				},
+			},
+		},
+	}
+	if err := invalidProvider.Validate(); err == nil {
+		t.Error("provider shouldn't have been valid")
+	}
+}
+
+func TestVonageAlertProvider_IsValidWithInvalidFrom(t *testing.T) {
+	invalidProvider := AlertProvider{
+		DefaultConfig: Config{
+			APIKey:    "test-key",
+			APISecret: "test-secret",
+			From:      "",
+			To:        []string{"+1234567890"},
+		},
+	}
+	if err := invalidProvider.Validate(); err == nil {
+		t.Error("provider shouldn't have been valid")
+	}
+}
+
+func TestVonageAlertProvider_IsValidWithInvalidTo(t *testing.T) {
+	invalidProvider := AlertProvider{
+		DefaultConfig: Config{
+			APIKey:    "test-key",
+			APISecret: "test-secret",
+			From:      "Gatus",
+			To:        []string{},
+		},
+	}
+	if err := invalidProvider.Validate(); err == nil {
+		t.Error("provider shouldn't have been valid")
+	}
+}
+
+func TestAlertProvider_Send(t *testing.T) {
+	defer client.InjectHTTPClient(nil)
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		Name             string
+		Provider         AlertProvider
+		Alert            alert.Alert
+		Resolved         bool
+		MockRoundTripper test.MockRoundTripper
+		ExpectedError    bool
+	}{
+		{
+			Name: "triggered",
+			Provider: AlertProvider{
+				DefaultConfig: Config{
+					APIKey:    "test-key",
+					APISecret: "test-secret",
+					From:      "Gatus",
+					To:        []string{"+1234567890"},
+				},
+			},
+			Alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: false,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{
+					StatusCode: http.StatusOK,
+					Body:       io.NopCloser(strings.NewReader(`{"message-count":"1","messages":[{"to":"+1234567890","message-id":"test-id","status":"0","remaining-balance":"10.50","message-price":"0.10","network":"12345"}]}`)),
+				}
+			}),
+			ExpectedError: false,
+		},
+		{
+			Name: "triggered-error-status-code",
+			Provider: AlertProvider{
+				DefaultConfig: Config{
+					APIKey:    "test-key",
+					APISecret: "test-secret",
+					From:      "Gatus",
+					To:        []string{"+1234567890"},
+				},
+			},
+			Alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: false,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusInternalServerError, Body: http.NoBody}
+			}),
+			ExpectedError: true,
+		},
+		{
+			Name: "triggered-error-vonage-response",
+			Provider: AlertProvider{
+				DefaultConfig: Config{
+					APIKey:    "test-key",
+					APISecret: "test-secret",
+					From:      "Gatus",
+					To:        []string{"+1234567890"},
+				},
+			},
+			Alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: false,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{
+					StatusCode: http.StatusOK,
+					Body:       io.NopCloser(strings.NewReader(`{"message-count":"1","messages":[{"to":"+1234567890","message-id":"","status":"2","error-text":"Missing from param"}]}`)),
+				}
+			}),
+			ExpectedError: true,
+		},
+		{
+			Name: "resolved",
+			Provider: AlertProvider{
+				DefaultConfig: Config{
+					APIKey:    "test-key",
+					APISecret: "test-secret",
+					From:      "Gatus",
+					To:        []string{"+1234567890"},
+				},
+			},
+			Alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: true,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{
+					StatusCode: http.StatusOK,
+					Body:       io.NopCloser(strings.NewReader(`{"message-count":"1","messages":[{"to":"+1234567890","message-id":"test-id","status":"0","remaining-balance":"10.40","message-price":"0.10","network":"12345"}]}`)),
+				}
+			}),
+			ExpectedError: false,
+		},
+		{
+			Name: "multiple-recipients",
+			Provider: AlertProvider{
+				DefaultConfig: Config{
+					APIKey:    "test-key",
+					APISecret: "test-secret",
+					From:      "Gatus",
+					To:        []string{"+1234567890", "+0987654321"},
+				},
+			},
+			Alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved: false,
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{
+					StatusCode: http.StatusOK,
+					Body:       io.NopCloser(strings.NewReader(`{"message-count":"1","messages":[{"to":"+1234567890","message-id":"test-id","status":"0","remaining-balance":"10.30","message-price":"0.10","network":"12345"}]}`)),
+				}
+			}),
+			ExpectedError: false,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			client.InjectHTTPClient(&http.Client{Transport: scenario.MockRoundTripper})
+			err := scenario.Provider.Send(
+				&endpoint.Endpoint{Name: "endpoint-name"},
+				&scenario.Alert,
+				&endpoint.Result{
+					ConditionResults: []*endpoint.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.Resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.Resolved},
+					},
+				},
+				scenario.Resolved,
+			)
+			if scenario.ExpectedError && err == nil {
+				t.Error("expected error, got none")
+			}
+			if !scenario.ExpectedError && err != nil {
+				t.Error("expected no error, got", err.Error())
+			}
+		})
+	}
+}
+
+func TestAlertProvider_buildMessage(t *testing.T) {
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		Name            string
+		Provider        AlertProvider
+		Alert           alert.Alert
+		Resolved        bool
+		ExpectedMessage string
+	}{
+		{
+			Name: "triggered",
+			Provider: AlertProvider{
+				DefaultConfig: Config{
+					APIKey:    "test-key",
+					APISecret: "test-secret",
+					From:      "Gatus",
+					To:        []string{"+1234567890"},
+				},
+			},
+			Alert:           alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:        false,
+			ExpectedMessage: "TRIGGERED: endpoint-name - description-1",
+		},
+		{
+			Name: "resolved",
+			Provider: AlertProvider{
+				DefaultConfig: Config{
+					APIKey:    "test-key",
+					APISecret: "test-secret",
+					From:      "Gatus",
+					To:        []string{"+1234567890"},
+				},
+			},
+			Alert:           alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:        true,
+			ExpectedMessage: "RESOLVED: endpoint-name - description-2",
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			message := scenario.Provider.buildMessage(
+				&scenario.Provider.DefaultConfig,
+				&endpoint.Endpoint{Name: "endpoint-name"},
+				&scenario.Alert,
+				&endpoint.Result{
+					ConditionResults: []*endpoint.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.Resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.Resolved},
+					},
+				},
+				scenario.Resolved,
+			)
+			if message != scenario.ExpectedMessage {
+				t.Errorf("expected %s, got %s", scenario.ExpectedMessage, message)
+			}
+		})
+	}
+}
+
+func TestAlertProvider_GetDefaultAlert(t *testing.T) {
+	if (&AlertProvider{DefaultAlert: &alert.Alert{}}).GetDefaultAlert() == nil {
+		t.Error("expected default alert to be not nil")
+	}
+	if (&AlertProvider{DefaultAlert: nil}).GetDefaultAlert() != nil {
+		t.Error("expected default alert to be nil")
+	}
+}
+
+func TestAlertProvider_GetConfig(t *testing.T) {
+	scenarios := []struct {
+		Name           string
+		Provider       AlertProvider
+		InputGroup     string
+		InputAlert     alert.Alert
+		ExpectedOutput Config
+	}{
+		{
+			Name: "provider-no-override-should-default",
+			Provider: AlertProvider{
+				DefaultConfig: Config{
+					APIKey:    "test-key",
+					APISecret: "test-secret",
+					From:      "Gatus",
+					To:        []string{"+1234567890"},
+				},
+			},
+			InputGroup: "",
+			InputAlert: alert.Alert{},
+			ExpectedOutput: Config{
+				APIKey:    "test-key",
+				APISecret: "test-secret",
+				From:      "Gatus",
+				To:        []string{"+1234567890"},
+			},
+		},
+		{
+			Name: "provider-with-group-override",
+			Provider: AlertProvider{
+				DefaultConfig: Config{
+					APIKey:    "test-key",
+					APISecret: "test-secret",
+					From:      "Gatus",
+					To:        []string{"+1234567890"},
+				},
+				Overrides: []Override{
+					{
+						Group: "test-group",
+						Config: Config{
+							APIKey:    "group-override-key",
+							APISecret: "group-override-secret",
+							From:      "GroupOverride",
+							To:        []string{"+9876543210"},
+						},
+					},
+				},
+			},
+			InputGroup: "test-group",
+			InputAlert: alert.Alert{},
+			ExpectedOutput: Config{
+				APIKey:    "group-override-key",
+				APISecret: "group-override-secret",
+				From:      "GroupOverride",
+				To:        []string{"+9876543210"},
+			},
+		},
+		{
+			Name: "provider-with-group-override-partial",
+			Provider: AlertProvider{
+				DefaultConfig: Config{
+					APIKey:    "test-key",
+					APISecret: "test-secret",
+					From:      "Gatus",
+					To:        []string{"+1234567890"},
+				},
+				Overrides: []Override{
+					{
+						Group: "test-group",
+						Config: Config{
+							To: []string{"+9876543210"},
+						},
+					},
+				},
+			},
+			InputGroup: "test-group",
+			InputAlert: alert.Alert{},
+			ExpectedOutput: Config{
+				APIKey:    "test-key",
+				APISecret: "test-secret",
+				From:      "Gatus",
+				To:        []string{"+9876543210"},
+			},
+		},
+		{
+			Name: "provider-with-alert-override",
+			Provider: AlertProvider{
+				DefaultConfig: Config{
+					APIKey:    "test-key",
+					APISecret: "test-secret",
+					From:      "Gatus",
+					To:        []string{"+1234567890"},
+				},
+			},
+			InputGroup: "",
+			InputAlert: alert.Alert{ProviderOverride: map[string]any{
+				"api-key":    "override-key",
+				"api-secret": "override-secret",
+				"from":       "Override",
+				"to":         []string{"+9876543210"},
+			}},
+			ExpectedOutput: Config{
+				APIKey:    "override-key",
+				APISecret: "override-secret",
+				From:      "Override",
+				To:        []string{"+9876543210"},
+			},
+		},
+		{
+			Name: "provider-with-both-group-and-alert-override",
+			Provider: AlertProvider{
+				DefaultConfig: Config{
+					APIKey:    "test-key",
+					APISecret: "test-secret",
+					From:      "Gatus",
+					To:        []string{"+1234567890"},
+				},
+				Overrides: []Override{
+					{
+						Group: "test-group",
+						Config: Config{
+							APIKey: "group-override-key",
+							From:   "GroupOverride",
+						},
+					},
+				},
+			},
+			InputGroup: "test-group",
+			InputAlert: alert.Alert{ProviderOverride: map[string]any{
+				"api-secret": "alert-override-secret",
+				"to":         []string{"+9876543210"},
+			}},
+			ExpectedOutput: Config{
+				APIKey:    "group-override-key",
+				APISecret: "alert-override-secret",
+				From:      "GroupOverride",
+				To:        []string{"+9876543210"},
+			},
+		},
+		{
+			Name: "provider-with-group-override-no-match",
+			Provider: AlertProvider{
+				DefaultConfig: Config{
+					APIKey:    "test-key",
+					APISecret: "test-secret",
+					From:      "Gatus",
+					To:        []string{"+1234567890"},
+				},
+				Overrides: []Override{
+					{
+						Group: "different-group",
+						Config: Config{
+							APIKey: "group-override-key",
+						},
+					},
+				},
+			},
+			InputGroup: "test-group",
+			InputAlert: alert.Alert{},
+			ExpectedOutput: Config{
+				APIKey:    "test-key",
+				APISecret: "test-secret",
+				From:      "Gatus",
+				To:        []string{"+1234567890"},
+			},
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			got, err := scenario.Provider.GetConfig(scenario.InputGroup, &scenario.InputAlert)
+			if err != nil {
+				t.Error("expected no error, got:", err.Error())
+			}
+			if got.APIKey != scenario.ExpectedOutput.APIKey {
+				t.Errorf("expected APIKey to be %s, got %s", scenario.ExpectedOutput.APIKey, got.APIKey)
+			}
+			if got.APISecret != scenario.ExpectedOutput.APISecret {
+				t.Errorf("expected APISecret to be %s, got %s", scenario.ExpectedOutput.APISecret, got.APISecret)
+			}
+			if got.From != scenario.ExpectedOutput.From {
+				t.Errorf("expected From to be %s, got %s", scenario.ExpectedOutput.From, got.From)
+			}
+			if len(got.To) != len(scenario.ExpectedOutput.To) {
+				t.Errorf("expected To to have length %d, got %d", len(scenario.ExpectedOutput.To), len(got.To))
+			} else {
+				for i, to := range got.To {
+					if to != scenario.ExpectedOutput.To[i] {
+						t.Errorf("expected To[%d] to be %s, got %s", i, scenario.ExpectedOutput.To[i], to)
+					}
+				}
+			}
+			// Test ValidateOverrides as well, since it really just calls GetConfig
+			if err = scenario.Provider.ValidateOverrides(scenario.InputGroup, &scenario.InputAlert); err != nil {
+				t.Errorf("unexpected error: %s", err)
+			}
+		})
+	}
+}
+

alerting/provider/webex/webex.go

@@ -0,0 +1,171 @@
+package webex
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"gopkg.in/yaml.v3"
+)
+
+var (
+	ErrWebhookURLNotSet       = errors.New("webhook-url not set")
+	ErrDuplicateGroupOverride = errors.New("duplicate group override")
+)
+
+type Config struct {
+	WebhookURL string `yaml:"webhook-url"` // Webex Teams webhook URL
+}
+
+func (cfg *Config) Validate() error {
+	if len(cfg.WebhookURL) == 0 {
+		return ErrWebhookURLNotSet
+	}
+	return nil
+}
+
+func (cfg *Config) Merge(override *Config) {
+	if len(override.WebhookURL) > 0 {
+		cfg.WebhookURL = override.WebhookURL
+	}
+}
+
+// AlertProvider is the configuration necessary for sending an alert using Webex
+type AlertProvider struct {
+	DefaultConfig Config `yaml:",inline"`
+
+	// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
+	DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
+
+	// Overrides is a list of Override that may be prioritized over the default configuration
+	Overrides []Override `yaml:"overrides,omitempty"`
+}
+
+// Override is a case under which the default integration is overridden
+type Override struct {
+	Group  string `yaml:"group"`
+	Config `yaml:",inline"`
+}
+
+// Validate the provider's configuration
+func (provider *AlertProvider) Validate() error {
+	registeredGroups := make(map[string]bool)
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if isAlreadyRegistered := registeredGroups[override.Group]; isAlreadyRegistered || override.Group == "" {
+				return ErrDuplicateGroupOverride
+			}
+			registeredGroups[override.Group] = true
+		}
+	}
+	return provider.DefaultConfig.Validate()
+}
+
+// Send an alert using the provider
+func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) error {
+	cfg, err := provider.GetConfig(ep.Group, alert)
+	if err != nil {
+		return err
+	}
+	body, err := provider.buildRequestBody(ep, alert, result, resolved)
+	if err != nil {
+		return err
+	}
+	buffer := bytes.NewBuffer(body)
+	request, err := http.NewRequest(http.MethodPost, cfg.WebhookURL, buffer)
+	if err != nil {
+		return err
+	}
+	request.Header.Set("Content-Type", "application/json")
+	response, err := client.GetHTTPClient(nil).Do(request)
+	if err != nil {
+		return err
+	}
+	defer response.Body.Close()
+	if response.StatusCode >= 400 {
+		body, _ := io.ReadAll(response.Body)
+		return fmt.Errorf("call to webex alert returned status code %d: %s", response.StatusCode, string(body))
+	}
+	return nil
+}
+
+type Body struct {
+	RoomID   string `json:"roomId,omitempty"`
+	Text     string `json:"text,omitempty"`
+	Markdown string `json:"markdown"`
+}
+
+// buildRequestBody builds the request body for the provider
+func (provider *AlertProvider) buildRequestBody(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) ([]byte, error) {
+	var message string
+	if resolved {
+		message = fmt.Sprintf("✅ **RESOLVED**: %s\n\nAlert has been resolved after passing successfully %d time(s) in a row", ep.DisplayName(), alert.SuccessThreshold)
+	} else {
+		message = fmt.Sprintf("🚨 **ALERT**: %s\n\nEndpoint has failed %d time(s) in a row", ep.DisplayName(), alert.FailureThreshold)
+	}
+	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
+		message += fmt.Sprintf("\n\n**Description**: %s", alertDescription)
+	}
+	if len(result.ConditionResults) > 0 {
+		message += "\n\n**Condition Results:**"
+		for _, conditionResult := range result.ConditionResults {
+			var status string
+			if conditionResult.Success {
+				status = "✅"
+			} else {
+				status = "❌"
+			}
+			message += fmt.Sprintf("\n- %s `%s`", status, conditionResult.Condition)
+		}
+	}
+	body := Body{
+		Markdown: message,
+	}
+	bodyAsJSON, err := json.Marshal(body)
+	if err != nil {
+		return nil, err
+	}
+	return bodyAsJSON, nil
+}
+
+// GetDefaultAlert returns the provider's default alert configuration
+func (provider *AlertProvider) GetDefaultAlert() *alert.Alert {
+	return provider.DefaultAlert
+}
+
+// GetConfig returns the configuration for the provider with the overrides applied
+func (provider *AlertProvider) GetConfig(group string, alert *alert.Alert) (*Config, error) {
+	cfg := provider.DefaultConfig
+	// Handle group overrides
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if group == override.Group {
+				cfg.Merge(&override.Config)
+				break
+			}
+		}
+	}
+	// Handle alert overrides
+	if len(alert.ProviderOverride) != 0 {
+		overrideConfig := Config{}
+		if err := yaml.Unmarshal(alert.ProviderOverrideAsBytes(), &overrideConfig); err != nil {
+			return nil, err
+		}
+		cfg.Merge(&overrideConfig)
+	}
+	// Validate the configuration
+	err := cfg.Validate()
+	return &cfg, err
+}
+
+// ValidateOverrides validates the alert's provider override and, if present, the group override
+func (provider *AlertProvider) ValidateOverrides(group string, alert *alert.Alert) error {
+	_, err := provider.GetConfig(group, alert)
+	return err
+}

alerting/provider/webex/webex_test.go

@@ -0,0 +1,134 @@
+package webex
+
+import (
+	"encoding/json"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"github.com/TwiN/gatus/v5/test"
+)
+
+func TestAlertProvider_Validate(t *testing.T) {
+	scenarios := []struct {
+		name     string
+		provider AlertProvider
+		expected error
+	}{
+		{
+			name:     "valid",
+			provider: AlertProvider{DefaultConfig: Config{WebhookURL: "https://webexapis.com/v1/webhooks/incoming/123"}},
+			expected: nil,
+		},
+		{
+			name:     "invalid-webhook-url",
+			provider: AlertProvider{DefaultConfig: Config{}},
+			expected: ErrWebhookURLNotSet,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			err := scenario.provider.Validate()
+			if err != scenario.expected {
+				t.Errorf("expected %v, got %v", scenario.expected, err)
+			}
+		})
+	}
+}
+
+func TestAlertProvider_Send(t *testing.T) {
+	defer client.InjectHTTPClient(nil)
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		name             string
+		provider         AlertProvider
+		alert            alert.Alert
+		resolved         bool
+		mockRoundTripper test.MockRoundTripper
+		expectedError    bool
+	}{
+		{
+			name:     "triggered",
+			provider: AlertProvider{DefaultConfig: Config{WebhookURL: "https://webexapis.com/v1/webhooks/incoming/123"}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				if body["markdown"] == nil {
+					t.Error("expected 'markdown' field in request body")
+				}
+				markdown := body["markdown"].(string)
+				if !strings.Contains(markdown, "ALERT") {
+					t.Errorf("expected markdown to contain 'ALERT', got %s", markdown)
+				}
+				if !strings.Contains(markdown, "failed 3 time(s)") {
+					t.Errorf("expected markdown to contain failure count, got %s", markdown)
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "resolved",
+			provider: AlertProvider{DefaultConfig: Config{WebhookURL: "https://webexapis.com/v1/webhooks/incoming/123"}},
+			alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: true,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				markdown := body["markdown"].(string)
+				if !strings.Contains(markdown, "RESOLVED") {
+					t.Errorf("expected markdown to contain 'RESOLVED', got %s", markdown)
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "error-response",
+			provider: AlertProvider{DefaultConfig: Config{WebhookURL: "https://webexapis.com/v1/webhooks/incoming/123"}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusUnauthorized, Body: http.NoBody}
+			}),
+			expectedError: true,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			client.InjectHTTPClient(&http.Client{Transport: scenario.mockRoundTripper})
+			err := scenario.provider.Send(
+				&endpoint.Endpoint{Name: "endpoint-name"},
+				&scenario.alert,
+				&endpoint.Result{
+					ConditionResults: []*endpoint.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.resolved},
+					},
+				},
+				scenario.resolved,
+			)
+			if scenario.expectedError && err == nil {
+				t.Error("expected error, got none")
+			}
+			if !scenario.expectedError && err != nil {
+				t.Error("expected no error, got", err.Error())
+			}
+		})
+	}
+}
+
+func TestAlertProvider_GetDefaultAlert(t *testing.T) {
+	if (&AlertProvider{DefaultAlert: &alert.Alert{}}).GetDefaultAlert() == nil {
+		t.Error("expected default alert to be not nil")
+	}
+	if (&AlertProvider{DefaultAlert: nil}).GetDefaultAlert() != nil {
+		t.Error("expected default alert to be nil")
+	}
+}

alerting/provider/zapier/zapier.go

@@ -0,0 +1,197 @@
+package zapier
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"time"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"gopkg.in/yaml.v3"
+)
+
+var (
+	ErrWebhookURLNotSet       = errors.New("webhook-url not set")
+	ErrDuplicateGroupOverride = errors.New("duplicate group override")
+)
+
+type Config struct {
+	WebhookURL string `yaml:"webhook-url"` // Zapier webhook URL
+}
+
+func (cfg *Config) Validate() error {
+	if len(cfg.WebhookURL) == 0 {
+		return ErrWebhookURLNotSet
+	}
+	return nil
+}
+
+func (cfg *Config) Merge(override *Config) {
+	if len(override.WebhookURL) > 0 {
+		cfg.WebhookURL = override.WebhookURL
+	}
+}
+
+// AlertProvider is the configuration necessary for sending an alert using Zapier
+type AlertProvider struct {
+	DefaultConfig Config `yaml:",inline"`
+
+	// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
+	DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
+
+	// Overrides is a list of Override that may be prioritized over the default configuration
+	Overrides []Override `yaml:"overrides,omitempty"`
+}
+
+// Override is a case under which the default integration is overridden
+type Override struct {
+	Group  string `yaml:"group"`
+	Config `yaml:",inline"`
+}
+
+// Validate the provider's configuration
+func (provider *AlertProvider) Validate() error {
+	registeredGroups := make(map[string]bool)
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if isAlreadyRegistered := registeredGroups[override.Group]; isAlreadyRegistered || override.Group == "" {
+				return ErrDuplicateGroupOverride
+			}
+			registeredGroups[override.Group] = true
+		}
+	}
+	return provider.DefaultConfig.Validate()
+}
+
+// Send an alert using the provider
+func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) error {
+	cfg, err := provider.GetConfig(ep.Group, alert)
+	if err != nil {
+		return err
+	}
+	body, err := provider.buildRequestBody(ep, alert, result, resolved)
+	if err != nil {
+		return err
+	}
+	buffer := bytes.NewBuffer(body)
+	request, err := http.NewRequest(http.MethodPost, cfg.WebhookURL, buffer)
+	if err != nil {
+		return err
+	}
+	request.Header.Set("Content-Type", "application/json")
+	response, err := client.GetHTTPClient(nil).Do(request)
+	if err != nil {
+		return err
+	}
+	defer response.Body.Close()
+	if response.StatusCode >= 400 {
+		body, _ := io.ReadAll(response.Body)
+		return fmt.Errorf("call to zapier alert returned status code %d: %s", response.StatusCode, string(body))
+	}
+	return nil
+}
+
+type Body struct {
+	AlertType        string            `json:"alert_type"`
+	Status           string            `json:"status"`
+	Endpoint         string            `json:"endpoint"`
+	Group            string            `json:"group,omitempty"`
+	Message          string            `json:"message"`
+	Description      string            `json:"description,omitempty"`
+	Timestamp        string            `json:"timestamp"`
+	SuccessThreshold int               `json:"success_threshold,omitempty"`
+	FailureThreshold int               `json:"failure_threshold,omitempty"`
+	ConditionResults []*endpoint.ConditionResult `json:"condition_results,omitempty"`
+	TotalConditions  int               `json:"total_conditions"`
+	PassedConditions int               `json:"passed_conditions"`
+	FailedConditions int               `json:"failed_conditions"`
+}
+
+
+// buildRequestBody builds the request body for the provider
+func (provider *AlertProvider) buildRequestBody(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) ([]byte, error) {
+	var alertType, status, message string
+	var successThreshold, failureThreshold int
+	if resolved {
+		alertType = "resolved"
+		status = "ok"
+		message = fmt.Sprintf("Alert for %s has been resolved after passing successfully %d time(s) in a row", ep.DisplayName(), alert.SuccessThreshold)
+		successThreshold = alert.SuccessThreshold
+	} else {
+		alertType = "triggered"
+		status = "critical"
+		message = fmt.Sprintf("Alert for %s has been triggered due to having failed %d time(s) in a row", ep.DisplayName(), alert.FailureThreshold)
+		failureThreshold = alert.FailureThreshold
+	}
+	// Process condition results
+	passedConditions := 0
+	failedConditions := 0
+	for _, cr := range result.ConditionResults {
+		if cr.Success {
+			passedConditions++
+		} else {
+			failedConditions++
+		}
+	}
+	body := Body{
+		AlertType:        alertType,
+		Status:           status,
+		Endpoint:         ep.DisplayName(),
+		Group:            ep.Group,
+		Message:          message,
+		Description:      alert.GetDescription(),
+		Timestamp:        time.Now().Format(time.RFC3339),
+		SuccessThreshold: successThreshold,
+		FailureThreshold: failureThreshold,
+		ConditionResults: result.ConditionResults,
+		TotalConditions:  len(result.ConditionResults),
+		PassedConditions: passedConditions,
+		FailedConditions: failedConditions,
+	}
+	bodyAsJSON, err := json.Marshal(body)
+	if err != nil {
+		return nil, err
+	}
+	return bodyAsJSON, nil
+}
+
+// GetDefaultAlert returns the provider's default alert configuration
+func (provider *AlertProvider) GetDefaultAlert() *alert.Alert {
+	return provider.DefaultAlert
+}
+
+// GetConfig returns the configuration for the provider with the overrides applied
+func (provider *AlertProvider) GetConfig(group string, alert *alert.Alert) (*Config, error) {
+	cfg := provider.DefaultConfig
+	// Handle group overrides
+	if provider.Overrides != nil {
+		for _, override := range provider.Overrides {
+			if group == override.Group {
+				cfg.Merge(&override.Config)
+				break
+			}
+		}
+	}
+	// Handle alert overrides
+	if len(alert.ProviderOverride) != 0 {
+		overrideConfig := Config{}
+		if err := yaml.Unmarshal(alert.ProviderOverrideAsBytes(), &overrideConfig); err != nil {
+			return nil, err
+		}
+		cfg.Merge(&overrideConfig)
+	}
+	// Validate the configuration
+	err := cfg.Validate()
+	return &cfg, err
+}
+
+// ValidateOverrides validates the alert's provider override and, if present, the group override
+func (provider *AlertProvider) ValidateOverrides(group string, alert *alert.Alert) error {
+	_, err := provider.GetConfig(group, alert)
+	return err
+}

alerting/provider/zapier/zapier_test.go

@@ -0,0 +1,162 @@
+package zapier
+
+import (
+	"encoding/json"
+	"net/http"
+	"strings"
+	"testing"
+
+	"github.com/TwiN/gatus/v5/alerting/alert"
+	"github.com/TwiN/gatus/v5/client"
+	"github.com/TwiN/gatus/v5/config/endpoint"
+	"github.com/TwiN/gatus/v5/test"
+)
+
+func TestAlertProvider_Validate(t *testing.T) {
+	scenarios := []struct {
+		name     string
+		provider AlertProvider
+		expected error
+	}{
+		{
+			name:     "valid",
+			provider: AlertProvider{DefaultConfig: Config{WebhookURL: "https://hooks.zapier.com/hooks/catch/123456/abcdef/"}},
+			expected: nil,
+		},
+		{
+			name:     "invalid-webhook-url",
+			provider: AlertProvider{DefaultConfig: Config{}},
+			expected: ErrWebhookURLNotSet,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			err := scenario.provider.Validate()
+			if err != scenario.expected {
+				t.Errorf("expected %v, got %v", scenario.expected, err)
+			}
+		})
+	}
+}
+
+func TestAlertProvider_Send(t *testing.T) {
+	defer client.InjectHTTPClient(nil)
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		name             string
+		provider         AlertProvider
+		alert            alert.Alert
+		resolved         bool
+		mockRoundTripper test.MockRoundTripper
+		expectedError    bool
+	}{
+		{
+			name:     "triggered",
+			provider: AlertProvider{DefaultConfig: Config{WebhookURL: "https://hooks.zapier.com/hooks/catch/123456/abcdef/"}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				if r.Host != "hooks.zapier.com" {
+					t.Errorf("expected host hooks.zapier.com, got %s", r.Host)
+				}
+				if r.URL.Path != "/hooks/catch/123456/abcdef/" {
+					t.Errorf("expected path /hooks/catch/123456/abcdef/, got %s", r.URL.Path)
+				}
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				if body["alert_type"] != "triggered" {
+					t.Errorf("expected alert_type to be 'triggered', got %v", body["alert_type"])
+				}
+				if body["status"] != "critical" {
+					t.Errorf("expected status to be 'critical', got %v", body["status"])
+				}
+				if body["endpoint"] != "endpoint-name" {
+					t.Errorf("expected endpoint to be 'endpoint-name', got %v", body["endpoint"])
+				}
+				message := body["message"].(string)
+				if !strings.Contains(message, "Alert") {
+					t.Errorf("expected message to contain 'Alert', got %s", message)
+				}
+				if !strings.Contains(message, "failed 3 time(s)") {
+					t.Errorf("expected message to contain failure count, got %s", message)
+				}
+				if body["description"] != firstDescription {
+					t.Errorf("expected description to be '%s', got %v", firstDescription, body["description"])
+				}
+				conditionResults := body["condition_results"].([]interface{})
+				if len(conditionResults) != 2 {
+					t.Errorf("expected 2 condition results, got %d", len(conditionResults))
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "resolved",
+			provider: AlertProvider{DefaultConfig: Config{WebhookURL: "https://hooks.zapier.com/hooks/catch/123456/abcdef/"}},
+			alert:    alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: true,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				body := make(map[string]interface{})
+				json.NewDecoder(r.Body).Decode(&body)
+				if body["alert_type"] != "resolved" {
+					t.Errorf("expected alert_type to be 'resolved', got %v", body["alert_type"])
+				}
+				if body["status"] != "ok" {
+					t.Errorf("expected status to be 'ok', got %v", body["status"])
+				}
+				message := body["message"].(string)
+				if !strings.Contains(message, "resolved") {
+					t.Errorf("expected message to contain 'resolved', got %s", message)
+				}
+				if body["description"] != secondDescription {
+					t.Errorf("expected description to be '%s', got %v", secondDescription, body["description"])
+				}
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+			expectedError: false,
+		},
+		{
+			name:     "error-response",
+			provider: AlertProvider{DefaultConfig: Config{WebhookURL: "https://hooks.zapier.com/hooks/catch/123456/abcdef/"}},
+			alert:    alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			resolved: false,
+			mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusUnauthorized, Body: http.NoBody}
+			}),
+			expectedError: true,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			client.InjectHTTPClient(&http.Client{Transport: scenario.mockRoundTripper})
+			err := scenario.provider.Send(
+				&endpoint.Endpoint{Name: "endpoint-name"},
+				&scenario.alert,
+				&endpoint.Result{
+					ConditionResults: []*endpoint.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.resolved},
+					},
+				},
+				scenario.resolved,
+			)
+			if scenario.expectedError && err == nil {
+				t.Error("expected error, got none")
+			}
+			if !scenario.expectedError && err != nil {
+				t.Error("expected no error, got", err.Error())
+			}
+		})
+	}
+}
+
+func TestAlertProvider_GetDefaultAlert(t *testing.T) {
+	if (&AlertProvider{DefaultAlert: &alert.Alert{}}).GetDefaultAlert() == nil {
+		t.Error("expected default alert to be not nil")
+	}
+	if (&AlertProvider{DefaultAlert: nil}).GetDefaultAlert() != nil {
+		t.Error("expected default alert to be nil")
+	}
+}

api/api.go

@@ -52,6 +52,7 @@ func (a *API) createRouter(cfg *config.Config) *fiber.App {
 		},
 		ReadBufferSize: cfg.Web.ReadBufferSize,
 		Network:        fiber.NetworkTCP,
+		Immutable:      true, // If not enabled, will cause issues due to fiber's zero allocation. See #1268 and https://docs.gofiber.io/#zero-allocation
 	})
 	if os.Getenv("ENVIRONMENT") == "dev" {
 		app.Use(cors.New(cors.Config{
@@ -75,7 +76,7 @@ func (a *API) createRouter(cfg *config.Config) *fiber.App {
 	// UNPROTECTED ROUTES //
 	////////////////////////
 	unprotectedAPIRouter := apiRouter.Group("/")
-	unprotectedAPIRouter.Get("/v1/config", ConfigHandler{securityConfig: cfg.Security}.GetConfig)
+	unprotectedAPIRouter.Get("/v1/config", ConfigHandler{securityConfig: cfg.Security, config: cfg}.GetConfig)
 	unprotectedAPIRouter.Get("/v1/endpoints/:key/health/badge.svg", HealthBadge)
 	unprotectedAPIRouter.Get("/v1/endpoints/:key/health/badge.shields", HealthBadgeShields)
 	unprotectedAPIRouter.Get("/v1/endpoints/:key/uptimes/:duration", UptimeRaw)
@@ -83,11 +84,13 @@ func (a *API) createRouter(cfg *config.Config) *fiber.App {
 	unprotectedAPIRouter.Get("/v1/endpoints/:key/response-times/:duration", ResponseTimeRaw)
 	unprotectedAPIRouter.Get("/v1/endpoints/:key/response-times/:duration/badge.svg", ResponseTimeBadge(cfg))
 	unprotectedAPIRouter.Get("/v1/endpoints/:key/response-times/:duration/chart.svg", ResponseTimeChart)
+	unprotectedAPIRouter.Get("/v1/endpoints/:key/response-times/:duration/history", ResponseTimeHistory)
 	// This endpoint requires authz with bearer token, so technically it is protected
 	unprotectedAPIRouter.Post("/v1/endpoints/:key/external", CreateExternalEndpointResult(cfg))
 	// SPA
 	app.Get("/", SinglePageApplication(cfg.UI))
-	app.Get("/endpoints/:name", SinglePageApplication(cfg.UI))
+	app.Get("/endpoints/:key", SinglePageApplication(cfg.UI))
+	app.Get("/suites/:key", SinglePageApplication(cfg.UI))
 	// Health endpoint
 	healthHandler := health.Handler().WithJSON(true)
 	app.Get("/health", func(c *fiber.Ctx) error {
@@ -127,5 +130,7 @@ func (a *API) createRouter(cfg *config.Config) *fiber.App {
 	}
 	protectedAPIRouter.Get("/v1/endpoints/statuses", EndpointStatuses(cfg))
 	protectedAPIRouter.Get("/v1/endpoints/:key/statuses", EndpointStatus(cfg))
+	protectedAPIRouter.Get("/v1/suites/statuses", SuiteStatuses(cfg))
+	protectedAPIRouter.Get("/v1/suites/:key/statuses", SuiteStatus(cfg))
 	return app
 }

api/badge_test.go

@@ -34,8 +34,8 @@ func TestBadge(t *testing.T) {
 	cfg.Endpoints[0].UIConfig = ui.GetDefaultConfig()
 	cfg.Endpoints[1].UIConfig = ui.GetDefaultConfig()
 
-	watchdog.UpdateEndpointStatuses(cfg.Endpoints[0], &endpoint.Result{Success: true, Connected: true, Duration: time.Millisecond, Timestamp: time.Now()})
-	watchdog.UpdateEndpointStatuses(cfg.Endpoints[1], &endpoint.Result{Success: false, Connected: false, Duration: time.Second, Timestamp: time.Now()})
+	watchdog.UpdateEndpointStatus(cfg.Endpoints[0], &endpoint.Result{Success: true, Connected: true, Duration: time.Millisecond, Timestamp: time.Now()})
+	watchdog.UpdateEndpointStatus(cfg.Endpoints[1], &endpoint.Result{Success: false, Connected: false, Duration: time.Second, Timestamp: time.Now()})
 	api := New(cfg)
 	router := api.Router()
 	type Scenario struct {
@@ -284,8 +284,8 @@ func TestGetBadgeColorFromResponseTime(t *testing.T) {
 		},
 	}
 
-	store.Get().Insert(&firstTestEndpoint, &testSuccessfulResult)
-	store.Get().Insert(&secondTestEndpoint, &testSuccessfulResult)
+	store.Get().InsertEndpointResult(&firstTestEndpoint, &testSuccessfulResult)
+	store.Get().InsertEndpointResult(&secondTestEndpoint, &testSuccessfulResult)
 
 	scenarios := []struct {
 		Key           string

api/chart.go

@@ -126,3 +126,63 @@ func ResponseTimeChart(c *fiber.Ctx) error {
 	}
 	return nil
 }
+
+func ResponseTimeHistory(c *fiber.Ctx) error {
+	duration := c.Params("duration")
+	var from time.Time
+	switch duration {
+	case "30d":
+		from = time.Now().Truncate(time.Hour).Add(-30 * 24 * time.Hour)
+	case "7d":
+		from = time.Now().Truncate(time.Hour).Add(-7 * 24 * time.Hour)
+	case "24h":
+		from = time.Now().Truncate(time.Hour).Add(-24 * time.Hour)
+	default:
+		return c.Status(400).SendString("Durations supported: 30d, 7d, 24h")
+	}
+	endpointKey, err := url.QueryUnescape(c.Params("key"))
+	if err != nil {
+		return c.Status(400).SendString("invalid key encoding")
+	}
+	hourlyAverageResponseTime, err := store.Get().GetHourlyAverageResponseTimeByKey(endpointKey, from, time.Now())
+	if err != nil {
+		if errors.Is(err, common.ErrEndpointNotFound) {
+			return c.Status(404).SendString(err.Error())
+		}
+		if errors.Is(err, common.ErrInvalidTimeRange) {
+			return c.Status(400).SendString(err.Error())
+		}
+		return c.Status(500).SendString(err.Error())
+	}
+	if len(hourlyAverageResponseTime) == 0 {
+		return c.Status(200).JSON(map[string]interface{}{
+			"timestamps": []int64{},
+			"values":     []int{},
+		})
+	}
+	hourlyTimestamps := make([]int, 0, len(hourlyAverageResponseTime))
+	earliestTimestamp := int64(0)
+	for hourlyTimestamp := range hourlyAverageResponseTime {
+		hourlyTimestamps = append(hourlyTimestamps, int(hourlyTimestamp))
+		if earliestTimestamp == 0 || hourlyTimestamp < earliestTimestamp {
+			earliestTimestamp = hourlyTimestamp
+		}
+	}
+	for earliestTimestamp > from.Unix() {
+		earliestTimestamp -= int64(time.Hour.Seconds())
+		hourlyTimestamps = append(hourlyTimestamps, int(earliestTimestamp))
+	}
+	sort.Ints(hourlyTimestamps)
+	timestamps := make([]int64, 0, len(hourlyTimestamps))
+	values := make([]int, 0, len(hourlyTimestamps))
+	for _, hourlyTimestamp := range hourlyTimestamps {
+		timestamp := int64(hourlyTimestamp)
+		averageResponseTime := hourlyAverageResponseTime[timestamp]
+		timestamps = append(timestamps, timestamp*1000)
+		values = append(values, averageResponseTime)
+	}
+	return c.Status(http.StatusOK).JSON(map[string]interface{}{
+		"timestamps": timestamps,
+		"values":     values,
+	})
+}

api/chart_test.go

@@ -28,8 +28,8 @@ func TestResponseTimeChart(t *testing.T) {
 			},
 		},
 	}
-	watchdog.UpdateEndpointStatuses(cfg.Endpoints[0], &endpoint.Result{Success: true, Duration: time.Millisecond, Timestamp: time.Now()})
-	watchdog.UpdateEndpointStatuses(cfg.Endpoints[1], &endpoint.Result{Success: false, Duration: time.Second, Timestamp: time.Now()})
+	watchdog.UpdateEndpointStatus(cfg.Endpoints[0], &endpoint.Result{Success: true, Duration: time.Millisecond, Timestamp: time.Now()})
+	watchdog.UpdateEndpointStatus(cfg.Endpoints[1], &endpoint.Result{Success: false, Duration: time.Second, Timestamp: time.Now()})
 	api := New(cfg)
 	router := api.Router()
 	type Scenario struct {
@@ -81,3 +81,69 @@ func TestResponseTimeChart(t *testing.T) {
 		})
 	}
 }
+
+func TestResponseTimeHistory(t *testing.T) {
+	defer store.Get().Clear()
+	defer cache.Clear()
+	cfg := &config.Config{
+		Metrics: true,
+		Endpoints: []*endpoint.Endpoint{
+			{
+				Name:  "frontend",
+				Group: "core",
+			},
+			{
+				Name:  "backend",
+				Group: "core",
+			},
+		},
+	}
+	watchdog.UpdateEndpointStatus(cfg.Endpoints[0], &endpoint.Result{Success: true, Duration: time.Millisecond, Timestamp: time.Now()})
+	watchdog.UpdateEndpointStatus(cfg.Endpoints[1], &endpoint.Result{Success: false, Duration: time.Second, Timestamp: time.Now()})
+	api := New(cfg)
+	router := api.Router()
+	type Scenario struct {
+		Name         string
+		Path         string
+		ExpectedCode int
+	}
+	scenarios := []Scenario{
+		{
+			Name:         "history-response-time-24h",
+			Path:         "/api/v1/endpoints/core_backend/response-times/24h/history",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "history-response-time-7d",
+			Path:         "/api/v1/endpoints/core_frontend/response-times/7d/history",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "history-response-time-30d",
+			Path:         "/api/v1/endpoints/core_frontend/response-times/30d/history",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "history-response-time-with-invalid-duration",
+			Path:         "/api/v1/endpoints/core_backend/response-times/3d/history",
+			ExpectedCode: http.StatusBadRequest,
+		},
+		{
+			Name:         "history-response-time-for-invalid-key",
+			Path:         "/api/v1/endpoints/invalid_key/response-times/7d/history",
+			ExpectedCode: http.StatusNotFound,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			request := httptest.NewRequest("GET", scenario.Path, http.NoBody)
+			response, err := router.Test(request)
+			if err != nil {
+				t.Fatal(err)
+			}
+			if response.StatusCode != scenario.ExpectedCode {
+				t.Errorf("%s %s should have returned %d, but returned %d instead", request.Method, request.URL, scenario.ExpectedCode, response.StatusCode)
+			}
+		})
+	}
+}

api/config.go

@@ -1,14 +1,17 @@
 package api
 
 import (
+	"encoding/json"
 	"fmt"
 
+	"github.com/TwiN/gatus/v5/config"
 	"github.com/TwiN/gatus/v5/security"
 	"github.com/gofiber/fiber/v2"
 )
 
 type ConfigHandler struct {
 	securityConfig *security.Config
+	config         *config.Config
 }
 
 func (handler ConfigHandler) GetConfig(c *fiber.Ctx) error {
@@ -18,8 +21,24 @@ func (handler ConfigHandler) GetConfig(c *fiber.Ctx) error {
 		hasOIDC = handler.securityConfig.OIDC != nil
 		isAuthenticated = handler.securityConfig.IsAuthenticated(c)
 	}
-	// Return the config
+
+	// Prepare response with announcements
+	response := map[string]interface{}{
+		"oidc":          hasOIDC,
+		"authenticated": isAuthenticated,
+	}
+	// Add announcements if available, otherwise use empty slice
+	if handler.config != nil && handler.config.Announcements != nil && len(handler.config.Announcements) > 0 {
+		response["announcements"] = handler.config.Announcements
+	} else {
+		response["announcements"] = []interface{}{}
+	}
+
+	// Return the config as JSON
 	c.Set("Content-Type", "application/json")
-	return c.Status(200).
-		SendString(fmt.Sprintf(`{"oidc":%v,"authenticated":%v}`, hasOIDC, isAuthenticated))
+	responseBytes, err := json.Marshal(response)
+	if err != nil {
+		return c.Status(500).SendString(fmt.Sprintf(`{"error":"Failed to marshal response: %s"}`, err.Error()))
+	}
+	return c.Status(200).Send(responseBytes)
 }

api/config_test.go

@@ -40,7 +40,7 @@ func TestConfigHandler_ServeHTTP(t *testing.T) {
 	if err != nil {
 		t.Error("expected err to be nil, but was", err)
 	}
-	if string(body) != `{"oidc":true,"authenticated":false}` {
-		t.Error("expected body to be `{\"oidc\":true,\"authenticated\":false}`, but was", string(body))
+	if string(body) != `{"announcements":[],"authenticated":false,"oidc":true}` {
+		t.Error("expected body to be `{\"announcements\":[],\"authenticated\":false,\"oidc\":true}`, but was", string(body))
 	}
 }

api/endpoint_status_test.go

@@ -101,8 +101,8 @@ func TestEndpointStatus(t *testing.T) {
 			MaximumNumberOfEvents:  storage.DefaultMaximumNumberOfEvents,
 		},
 	}
-	watchdog.UpdateEndpointStatuses(cfg.Endpoints[0], &endpoint.Result{Success: true, Duration: time.Millisecond, Timestamp: time.Now()})
-	watchdog.UpdateEndpointStatuses(cfg.Endpoints[1], &endpoint.Result{Success: false, Duration: time.Second, Timestamp: time.Now()})
+	watchdog.UpdateEndpointStatus(cfg.Endpoints[0], &endpoint.Result{Success: true, Duration: time.Millisecond, Timestamp: time.Now()})
+	watchdog.UpdateEndpointStatus(cfg.Endpoints[1], &endpoint.Result{Success: false, Duration: time.Second, Timestamp: time.Now()})
 	api := New(cfg)
 	router := api.Router()
 	type Scenario struct {
@@ -156,8 +156,8 @@ func TestEndpointStatuses(t *testing.T) {
 	defer cache.Clear()
 	firstResult := &testSuccessfulResult
 	secondResult := &testUnsuccessfulResult
-	store.Get().Insert(&testEndpoint, firstResult)
-	store.Get().Insert(&testEndpoint, secondResult)
+	store.Get().InsertEndpointResult(&testEndpoint, firstResult)
+	store.Get().InsertEndpointResult(&testEndpoint, secondResult)
 	// Can't be bothered dealing with timezone issues on the worker that runs the automated tests
 	firstResult.Timestamp = time.Time{}
 	secondResult.Timestamp = time.Time{}

api/external_endpoint.go

@@ -56,11 +56,11 @@ func CreateExternalEndpointResult(cfg *config.Config) fiber.Handler {
 			}
 			result.Duration = parsedDuration
 		}
-		if !result.Success && c.Query("error") != "" {
-			result.Errors = append(result.Errors, c.Query("error"))
+		if errorFromQuery := c.Query("error"); !result.Success && len(errorFromQuery) > 0 {
+			result.AddError(errorFromQuery)
 		}
 		convertedEndpoint := externalEndpoint.ToEndpoint()
-		if err := store.Get().Insert(convertedEndpoint, result); err != nil {
+		if err := store.Get().InsertEndpointResult(convertedEndpoint, result); err != nil {
 			if errors.Is(err, common.ErrEndpointNotFound) {
 				return c.Status(404).SendString(err.Error())
 			}
@@ -68,11 +68,20 @@ func CreateExternalEndpointResult(cfg *config.Config) fiber.Handler {
 			return c.Status(500).SendString(err.Error())
 		}
 		logr.Infof("[api.CreateExternalEndpointResult] Successfully inserted result for external endpoint with key=%s and success=%s", c.Params("key"), success)
+		inEndpointMaintenanceWindow := false
+		for _, maintenanceWindow := range externalEndpoint.MaintenanceWindows {
+			if maintenanceWindow.IsUnderMaintenance() {
+				logr.Debug("[api.CreateExternalEndpointResult] Under endpoint maintenance window")
+				inEndpointMaintenanceWindow = true
+			}
+		}
 		// Check if an alert should be triggered or resolved
-		if !cfg.Maintenance.IsUnderMaintenance() {
+		if !cfg.Maintenance.IsUnderMaintenance() && !inEndpointMaintenanceWindow {
 			watchdog.HandleAlerting(convertedEndpoint, result, cfg.Alerting)
 			externalEndpoint.NumberOfSuccessesInARow = convertedEndpoint.NumberOfSuccessesInARow
 			externalEndpoint.NumberOfFailuresInARow = convertedEndpoint.NumberOfFailuresInARow
+		} else {
+			logr.Debug("[api.CreateExternalEndpointResult] Not handling alerting because currently in the maintenance window")
 		}
 		if cfg.Metrics {
 			metrics.PublishMetricsForEndpoint(convertedEndpoint, result, extraLabels)

api/raw.go

@@ -3,6 +3,7 @@ package api
 import (
 	"errors"
 	"fmt"
+	"net/url"
 	"time"
 
 	"github.com/TwiN/gatus/v5/storage/store"
@@ -25,7 +26,10 @@ func UptimeRaw(c *fiber.Ctx) error {
 	default:
 		return c.Status(400).SendString("Durations supported: 30d, 7d, 24h, 1h")
 	}
-	key := c.Params("key")
+	key, err := url.QueryUnescape(c.Params("key"))
+	if err != nil {
+		return c.Status(400).SendString("invalid key encoding")
+	}
 	uptime, err := store.Get().GetUptimeByKey(key, from, time.Now())
 	if err != nil {
 		if errors.Is(err, common.ErrEndpointNotFound) {
@@ -57,7 +61,10 @@ func ResponseTimeRaw(c *fiber.Ctx) error {
 	default:
 		return c.Status(400).SendString("Durations supported: 30d, 7d, 24h, 1h")
 	}
-	key := c.Params("key")
+	key, err := url.QueryUnescape(c.Params("key"))
+	if err != nil {
+		return c.Status(400).SendString("invalid key encoding")
+	}
 	responseTime, err := store.Get().GetAverageResponseTimeByKey(key, from, time.Now())
 	if err != nil {
 		if errors.Is(err, common.ErrEndpointNotFound) {

api/raw_test.go

@@ -33,8 +33,8 @@ func TestRawDataEndpoint(t *testing.T) {
 	cfg.Endpoints[0].UIConfig = ui.GetDefaultConfig()
 	cfg.Endpoints[1].UIConfig = ui.GetDefaultConfig()
 
-	watchdog.UpdateEndpointStatuses(cfg.Endpoints[0], &endpoint.Result{Success: true, Connected: true, Duration: time.Millisecond, Timestamp: time.Now()})
-	watchdog.UpdateEndpointStatuses(cfg.Endpoints[1], &endpoint.Result{Success: false, Connected: false, Duration: time.Second, Timestamp: time.Now()})
+	watchdog.UpdateEndpointStatus(cfg.Endpoints[0], &endpoint.Result{Success: true, Connected: true, Duration: time.Millisecond, Timestamp: time.Now()})
+	watchdog.UpdateEndpointStatus(cfg.Endpoints[1], &endpoint.Result{Success: false, Connected: false, Duration: time.Second, Timestamp: time.Now()})
 	api := New(cfg)
 	router := api.Router()
 	type Scenario struct {