fix(alerting): Resolve issue with blank GoogleChat messages (#364)

* debug: Print GoogleChat request body

* chore: Update TwiN/whois to v1.1.0

* fix: Add missing client changes

* test: Improve DNS tests

* chore: Remove accidental change

* docs: Add note for future change to default behavior

* fix(alerting): Don't include URL in Google Chat alert if endpoint type isn't HTTP

Fixes #362

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

@@ -26,7 +26,7 @@ endpoints:
       - "[STATUS] == 200"
 
   - name: example-dns-query
-    url: "1.1.1.1" # Address of the DNS server to use
+    url: "8.8.8.8" # Address of the DNS server to use
     interval: 5m
     dns:
       query-name: "example.com"

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

@@ -26,7 +26,7 @@ endpoints:
       - "[STATUS] == 200"
 
   - name: example-dns-query
-    url: "1.1.1.1" # Address of the DNS server to use
+    url: "8.8.8.8" # Address of the DNS server to use
     interval: 5m
     dns:
       query-name: "example.com"

.github/dependabot.yml

@@ -0,0 +1,15 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    labels: ["dependencies"]
+    schedule:
+      interval: "weekly"
+      day: "wednesday"
+  - package-ecosystem: "gomod"
+    directory: "/"
+    open-pull-requests-limit: 1
+    labels: ["dependencies"]
+    schedule:
+      interval: "weekly"
+      day: "wednesday"

.github/workflows/benchmark.yml

@@ -18,7 +18,7 @@ jobs:
     steps:
       - uses: actions/setup-go@v3
         with:
-          go-version: 1.18
+          go-version: 1.19
           repository: "${{ github.event.inputs.repository }}"
           ref: "${{ github.event.inputs.ref }}"
       - uses: actions/checkout@v3

.github/workflows/publish-experimental.yml

@@ -10,19 +10,18 @@ jobs:
       - name: Get image repository
         run: echo IMAGE_REPOSITORY=$(echo ${{ secrets.DOCKER_USERNAME }}/${{ github.event.repository.name }} | tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV
       - name: Set up QEMU
-        uses: docker/setup-qemu-action@v1
+        uses: docker/setup-qemu-action@v2
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
+        uses: docker/setup-buildx-action@v2
       - name: Login to Docker Registry
         uses: docker/login-action@v2
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
       - name: Build and push docker image
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v3
         with:
           platforms: linux/amd64
           pull: true
           push: true
-          tags: |
-            ${{ env.IMAGE_REPOSITORY }}:experimental
+          tags: ${{ env.IMAGE_REPOSITORY }}:experimental

.github/workflows/publish-latest.yml

@@ -4,6 +4,9 @@ on:
     workflows: ["build"]
     branches: [master]
     types: [completed]
+concurrency:
+  group: ${{ github.workflow }}
+  cancel-in-progress: true
 jobs:
   publish-latest:
     name: publish-latest
@@ -15,19 +18,18 @@ jobs:
       - name: Get image repository
         run: echo IMAGE_REPOSITORY=$(echo ${{ secrets.DOCKER_USERNAME }}/${{ github.event.repository.name }} | tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV
       - name: Set up QEMU
-        uses: docker/setup-qemu-action@v1
+        uses: docker/setup-qemu-action@v2
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
+        uses: docker/setup-buildx-action@v2
       - name: Login to Docker Registry
         uses: docker/login-action@v2
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
       - name: Build and push docker image
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v3
         with:
           platforms: linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64
           pull: true
           push: true
-          tags: |
-            ${{ env.IMAGE_REPOSITORY }}:latest
+          tags: ${{ env.IMAGE_REPOSITORY }}:latest

.github/workflows/publish-release.yml

@@ -14,19 +14,18 @@ jobs:
       - name: Get the release
         run: echo RELEASE=${GITHUB_REF/refs\/tags\//} >> $GITHUB_ENV
       - name: Set up QEMU
-        uses: docker/setup-qemu-action@v1
+        uses: docker/setup-qemu-action@v2
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
+        uses: docker/setup-buildx-action@v2
       - name: Login to Docker Registry
         uses: docker/login-action@v2
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
       - name: Build and push docker image
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v3
         with:
           platforms: linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64
           pull: true
           push: true
-          tags: |
-            ${{ env.IMAGE_REPOSITORY }}:${{ env.RELEASE }}
+          tags: ${{ env.IMAGE_REPOSITORY }}:${{ env.RELEASE }},${{ env.IMAGE_REPOSITORY }}:stable

.github/workflows/test.yml

@@ -1,4 +1,4 @@
-name: build
+name: test
 on:
   pull_request:
     paths-ignore:
@@ -9,23 +9,22 @@ on:
     paths-ignore:
       - '*.md'
 jobs:
-  build:
-    name: build
+  test:
     runs-on: ubuntu-latest
     timeout-minutes: 5
     steps:
       - uses: actions/setup-go@v3
         with:
-          go-version: 1.18
+          go-version: 1.19
       - uses: actions/checkout@v3
       - name: Build binary to make sure it works
-        run: go build -mod vendor
+        run: go build
       - name: Test
         # We're using "sudo" because one of the tests leverages ping, which requires super-user privileges.
         # As for the 'env "PATH=$PATH" "GOROOT=$GOROOT"', we need it to use the same "go" executable that
         # 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 -mod vendor ./... -race -coverprofile=coverage.txt -covermode=atomic
+        run: sudo env "PATH=$PATH" "GOROOT=$GOROOT" go test ./... -race -coverprofile=coverage.txt -covermode=atomic
       - name: Codecov
-        uses: codecov/codecov-action@v2.1.0
+        uses: codecov/codecov-action@v3.1.1
         with:
           files: ./coverage.txt

Dockerfile

@@ -3,7 +3,7 @@ FROM golang:alpine as builder
 RUN apk --update add ca-certificates
 WORKDIR /app
 COPY . ./
-RUN CGO_ENABLED=0 GOOS=linux go build -mod vendor -a -installsuffix cgo -o gatus .
+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
 #RUN apk update && apk add --virtual build-dependencies build-base gcc
@@ -13,7 +13,6 @@ RUN CGO_ENABLED=0 GOOS=linux go build -mod vendor -a -installsuffix cgo -o gatus
 FROM scratch
 COPY --from=builder /app/gatus .
 COPY --from=builder /app/config.yaml ./config/config.yaml
-COPY --from=builder /app/web/static ./web/static
 COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
 ENV PORT=8080
 EXPOSE ${PORT}

README.md

@@ -1,6 +1,6 @@
 ![Gatus](.github/assets/logo-with-dark-text.png)
 
-![build](https://github.com/TwiN/gatus/workflows/build/badge.svg?branch=master)
+![test](https://github.com/TwiN/gatus/workflows/test/badge.svg?branch=master)
 [![Go Report Card](https://goreportcard.com/badge/github.com/TwiN/gatus?)](https://goreportcard.com/report/github.com/TwiN/gatus)
 [![codecov](https://codecov.io/gh/TwiN/gatus/branch/master/graph/badge.svg)](https://codecov.io/gh/TwiN/gatus)
 [![Go version](https://img.shields.io/github/go-mod/go-version/TwiN/gatus.svg)](https://github.com/TwiN/gatus)
@@ -24,10 +24,13 @@ docker run -p 8080:8080 --name gatus twinproduction/gatus
 For more details, see [Usage](#usage)
 </details>
 
-![Gatus dashboard conditions](.github/assets/dashboard-conditions.png)
+![Gatus dashboard](.github/assets/dashboard-dark.png)
 
 Have any feedback or questions? [Create a discussion](https://github.com/TwiN/gatus/discussions/new).
 
+Like this project? Please consider [sponsoring me](https://github.com/sponsors/TwiN).
+
+
 ## Table of Contents
 - [Why Gatus?](#why-gatus)
 - [Features](#features)
@@ -45,6 +48,7 @@ Have any feedback or questions? [Create a discussion](https://github.com/TwiN/ga
     - [Configuring Matrix alerts](#configuring-matrix-alerts)
     - [Configuring Mattermost alerts](#configuring-mattermost-alerts)
     - [Configuring Messagebird alerts](#configuring-messagebird-alerts)
+    - [Configuring Ntfy alerts](#configuring-ntfy-alerts)
     - [Configuring Opsgenie alerts](#configuring-opsgenie-alerts)
     - [Configuring PagerDuty alerts](#configuring-pagerduty-alerts)
     - [Configuring Slack alerts](#configuring-slack-alerts)
@@ -56,7 +60,7 @@ Have any feedback or questions? [Create a discussion](https://github.com/TwiN/ga
   - [Maintenance](#maintenance)
   - [Security](#security)
     - [Basic](#basic)
-    - [OIDC (ALPHA)](#oidc-alpha)
+    - [OIDC](#oidc)
   - [Metrics](#metrics)
   - [Remote instances (EXPERIMENTAL)](#remote-instances-experimental)
 - [Deployment](#deployment)
@@ -70,14 +74,18 @@ Have any feedback or questions? [Create a discussion](https://github.com/TwiN/ga
   - [Recommended interval](#recommended-interval)
   - [Default timeouts](#default-timeouts)
   - [Monitoring a TCP endpoint](#monitoring-a-tcp-endpoint)
+  - [Monitoring a UDP endpoint](#monitoring-a-udp-endpoint)
+  - [Monitoring a SCTP endpoint](#monitoring-a-sctp-endpoint)
   - [Monitoring an endpoint using ICMP](#monitoring-an-endpoint-using-icmp)
   - [Monitoring an endpoint using DNS queries](#monitoring-an-endpoint-using-dns-queries)
   - [Monitoring an endpoint using STARTTLS](#monitoring-an-endpoint-using-starttls)
   - [Monitoring an endpoint using TLS](#monitoring-an-endpoint-using-tls)
+  - [Monitoring domain expiration](#monitoring-domain-expiration)
   - [disable-monitoring-lock](#disable-monitoring-lock)
   - [Reloading configuration on the fly](#reloading-configuration-on-the-fly)
   - [Endpoint groups](#endpoint-groups)
   - [Exposing Gatus on a custom port](#exposing-gatus-on-a-custom-port)
+  - [Keeping your configuration small](#keeping-your-configuration-small)
   - [Badges](#badges)
     - [Uptime](#uptime)
     - [Health](#health)
@@ -86,6 +94,7 @@ Have any feedback or questions? [Create a discussion](https://github.com/TwiN/ga
   - [High level design overview](#high-level-design-overview)
 - [Sponsors](#sponsors)
 
+
 ## Why Gatus?
 Before getting into the specifics, I want to address the most common question:
 > Why would I use Gatus when I can just use Prometheus’ Alertmanager, Cloudwatch or even Splunk?
@@ -115,7 +124,8 @@ The main features of Gatus are:
 - **[Badges](#badges)**: ![Uptime 7d](https://status.twin.sh/api/v1/endpoints/core_blog-external/uptimes/7d/badge.svg) ![Response time 24h](https://status.twin.sh/api/v1/endpoints/core_blog-external/response-times/24h/badge.svg)
 - **Dark mode**
 
-![Gatus dashboard dark mode](.github/assets/dashboard-dark.png)
+![Gatus dashboard conditions](.github/assets/dashboard-conditions.png)
+
 
 ## Usage
 By default, the configuration file is expected to be at `config/config.yaml`.
@@ -189,6 +199,7 @@ If you want to test it locally, see [Docker](#docker).
 | `web.port`                                      | Port to listen on.                                                                                                                                 | `8080`                     |
 | `ui`                                            | UI configuration.                                                                                                                                  | `{}`                       |
 | `ui.title`                                      | [Title of the document](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/title).                                                          | `Health Dashboard ǀ Gatus` |
+| `ui.description`                                | Meta description for the page.                                                                                                                     | `Gatus is an advanced...`. |
 | `ui.header`                                     | Header at the top of the dashboard.                                                                                                                | `Health Status`            |
 | `ui.logo`                                       | URL to the logo to display.                                                                                                                        | `""`                       |
 | `ui.link`                                       | Link to open when the logo is clicked.                                                                                                             | `""`                       |
@@ -197,7 +208,6 @@ If you want to test it locally, see [Docker](#docker).
 | `ui.buttons[].link`                             | Link to open when the button is clicked.                                                                                                           | Required `""`              |
 | `maintenance`                                   | [Maintenance configuration](#maintenance).                                                                                                         | `{}`                       |
 
-
 ### Conditions
 Here are some examples of conditions you can use:
 
@@ -222,18 +232,20 @@ Here are some examples of conditions you can use:
 | `[BODY].name == pat(john*)`      | String at JSONPath `$.name` matches pattern `john*` | `{"name":"john.doe"}`      | `{"name":"bob"}` |
 | `[BODY].id == any(1, 2)`         | Value at JSONPath `$.id` is equal to `1` or `2`     | 1, 2                       | 3, 4, 5          |
 | `[CERTIFICATE_EXPIRATION] > 48h` | Certificate expiration is more than 48h away        | 49h, 50h, 123h             | 1h, 24h, ...     |
+| `[DOMAIN_EXPIRATION] > 720h`     | The domain must expire in more than 720h            | 4000h                      | 1h, 24h, ...     |
 
 
 #### Placeholders
 | Placeholder                | Description                                                                               | Example of resolved value                    |
 |:---------------------------|:------------------------------------------------------------------------------------------|:---------------------------------------------|
-| `[STATUS]`                 | Resolves into the HTTP status of the request                                              | 404                                          |
-| `[RESPONSE_TIME]`          | Resolves into the response time the request took, in ms                                   | 10                                           |
-| `[IP]`                     | Resolves into the IP of the target host                                                   | 192.168.0.232                                |
+| `[STATUS]`                 | Resolves into the HTTP status of the request                                              | `404`                                        |
+| `[RESPONSE_TIME]`          | Resolves into the response time the request took, in ms                                   | `10`                                         |
+| `[IP]`                     | Resolves into the IP of the target host                                                   | `192.168.0.232`                              |
 | `[BODY]`                   | Resolves into the response body. Supports JSONPath.                                       | `{"name":"john.doe"}`                        |
 | `[CONNECTED]`              | Resolves into whether a connection could be established                                   | `true`                                       |
 | `[CERTIFICATE_EXPIRATION]` | Resolves into the duration before certificate expiration (valid units are "s", "m", "h".) | `24h`, `48h`, 0 (if not protocol with certs) |
-| `[DNS_RCODE]`              | Resolves into the DNS status of the response                                              | NOERROR                                      |
+| `[DOMAIN_EXPIRATION]`      | Resolves into the duration before the domain expires (valid units are "s", "m", "h".)     | `24h`, `48h`, `1234h56m78s`                  |
+| `[DNS_RCODE]`              | Resolves into the DNS status of the response                                              | `NOERROR`                                    |
 
 
 #### Functions
@@ -326,7 +338,7 @@ endpoints:
   - name: with-custom-dns-resolver
     url: "https://your.health.api/health"
     client:
-      dns-resolver: "tcp://1.1.1.1:53"
+      dns-resolver: "tcp://8.8.8.8:53"
     conditions:
       - "[STATUS] == 200"
 ```
@@ -346,6 +358,7 @@ endpoints:
       - "[STATUS] == 200"
 ```
 
+
 ### Alerting
 Gatus supports multiple alerting providers, such as Slack and PagerDuty, and supports different alerts for each
 individual endpoints with configurable descriptions and thresholds.
@@ -358,8 +371,10 @@ ignored.
 | `alerting.discord`     | Configuration for alerts of type `discord`. <br />See [Configuring Discord alerts](#configuring-discord-alerts).             | `{}`    |
 | `alerting.email`       | Configuration for alerts of type `email`. <br />See [Configuring Email alerts](#configuring-email-alerts).                   | `{}`    |
 | `alerting.googlechat`  | Configuration for alerts of type `googlechat`. <br />See [Configuring Google Chat alerts](#configuring-google-chat-alerts).  | `{}`    |
+| `alerting.matrix`      | Configuration for alerts of type `matrix`. <br />See [Configuring Matrix alerts](#configuring-matrix-alerts).                | `{}`    |
 | `alerting.mattermost`  | Configuration for alerts of type `mattermost`. <br />See [Configuring Mattermost alerts](#configuring-mattermost-alerts).    | `{}`    |
 | `alerting.messagebird` | Configuration for alerts of type `messagebird`. <br />See [Configuring Messagebird alerts](#configuring-messagebird-alerts). | `{}`    |
+| `alerting.ntfy`        | Configuration for alerts of type `ntfy`. <br />See [Configuring Ntfy alerts](#configuring-ntfy-alerts).                      | `{}`    |
 | `alerting.opsgenie`    | Configuration for alerts of type `opsgenie`. <br />See [Configuring Opsgenie alerts](#configuring-opsgenie-alerts).          | `{}`    |
 | `alerting.pagerduty`   | Configuration for alerts of type `pagerduty`. <br />See [Configuring PagerDuty alerts](#configuring-pagerduty-alerts).       | `{}`    |
 | `alerting.slack`       | Configuration for alerts of type `slack`. <br />See [Configuring Slack alerts](#configuring-slack-alerts).                   | `{}`    |
@@ -368,6 +383,7 @@ ignored.
 | `alerting.twilio`      | Settings for alerts of type `twilio`. <br />See [Configuring Twilio alerts](#configuring-twilio-alerts).                     | `{}`    |
 | `alerting.custom`      | Configuration for custom actions on failure or alerts. <br />See [Configuring Custom alerts](#configuring-custom-alerts).    | `{}`    |
 
+
 #### Configuring Discord alerts
 
 | Parameter                                  | Description                                                                                | Default       |
@@ -399,6 +415,7 @@ endpoints:
         send-on-resolved: true
 ```
 
+
 #### Configuring Email alerts
 
 | Parameter                          | Description                                                                                | Default       |
@@ -460,6 +477,7 @@ endpoints:
 
 **NOTE:** Some mail servers are painfully slow.
 
+
 #### Configuring Google Chat alerts
 
 | Parameter                                     | Description                                                                                 | Default       |
@@ -480,7 +498,7 @@ alerting:
 endpoints:
   - name: website
     url: "https://twin.sh/health"
-    interval: 30s
+    interval: 5m
     conditions:
       - "[STATUS] == 200"
       - "[BODY].status == UP"
@@ -492,25 +510,26 @@ endpoints:
         send-on-resolved: true
 ```
 
+
 #### Configuring Matrix alerts
-| Parameter                          | Description                                                                                      | Default                            |
-|:-----------------------------------|:-------------------------------------------------------------------------------------------------|:-----------------------------------|
-| `alerting.matrix`                  | Settings for alerts of type `matrix`                                                             | `{}`                               |
-| `alerting.matrix.server-url`       | Homeserver URL                                                                                   | `https://matrix-client.matrix.org` |
-| `alerting.matrix.access-token`     | Bot user access token (see https://webapps.stackexchange.com/q/131056)                           | Required `""`                      |
-| `alerting.matrix.internal-room-id` | Internal room ID of room to send alerts to (can be found in Element in Room Settings > Advanced) | Required `""`                      |
-| `alerting.matrix.default-alert`    | Default alert configuration. <br />See [Setting a default alert](#setting-a-default-alert)       | N/A                                |
+| Parameter                                | Description                                                                                | Default                            |
+|:-----------------------------------------|:-------------------------------------------------------------------------------------------|:-----------------------------------|
+| `alerting.matrix`                        | Configuration for alerts of type `matrix`                                                  | `{}`                               |
+| `alerting.matrix.server-url`             | Homeserver URL                                                                             | `https://matrix-client.matrix.org` |
+| `alerting.matrix.access-token`           | Bot user access token (see https://webapps.stackexchange.com/q/131056)                     | Required `""`                      |
+| `alerting.matrix.internal-room-id`       | Internal room ID of room to send alerts to (can be found in Room Settings > Advanced)      | Required `""`                      |
+| `alerting.matrix.default-alert`          | Default alert configuration. <br />See [Setting a default alert](#setting-a-default-alert) | N/A                                |
 
 ```yaml
 alerting:
   matrix:
-    server-url: "..."
-    access-token: "..."
-    internal-room-id: "..."
+    server-url: "https://matrix-client.matrix.org"
+    access-token: "123456"
+    internal-room-id: "!example:matrix.org"
 
 endpoints:
   - name: website
-    interval: 30s
+    interval: 5m
     url: "https://twin.sh/health"
     conditions:
       - "[STATUS] == 200"
@@ -523,6 +542,7 @@ endpoints:
         description: "healthcheck failed"
 ```
 
+
 #### Configuring Mattermost alerts
 | Parameter                                     | Description                                                                                 | Default       |
 |:----------------------------------------------|:--------------------------------------------------------------------------------------------|:--------------|
@@ -544,7 +564,7 @@ alerting:
 endpoints:
   - name: website
     url: "https://twin.sh/health"
-    interval: 30s
+    interval: 5m
     conditions:
       - "[STATUS] == 200"
       - "[BODY].status == UP"
@@ -560,10 +580,11 @@ Here's an example of what the notifications look like:
 
 ![Mattermost notifications](.github/assets/mattermost-alerts.png)
 
+
 #### Configuring Messagebird alerts
 | Parameter                            | Description                                                                                | Default       |
 |:-------------------------------------|:-------------------------------------------------------------------------------------------|:--------------|
-| `alerting.messagebird`               | Settings for alerts of type `messagebird`                                                  | `{}`          |
+| `alerting.messagebird`               | Configuration for alerts of type `messagebird`                                             | `{}`          |
 | `alerting.messagebird.access-key`    | Messagebird access key                                                                     | Required `""` |
 | `alerting.messagebird.originator`    | The sender of the message                                                                  | Required `""` |
 | `alerting.messagebird.recipients`    | The recipients of the message                                                              | Required `""` |
@@ -579,7 +600,7 @@ alerting:
 
 endpoints:
   - name: website
-    interval: 30s
+    interval: 5m
     url: "https://twin.sh/health"
     conditions:
       - "[STATUS] == 200"
@@ -594,6 +615,42 @@ endpoints:
 ```
 
 
+#### Configuring Ntfy alerts
+| Parameter                     | Description                                                                                | Default           |
+|:------------------------------|:-------------------------------------------------------------------------------------------|:------------------|
+| `alerting.ntfy`               | Configuration for alerts of type `ntfy`                                                    | `{}`              |
+| `alerting.ntfy.topic`         | Topic at which the alert will be sent                                                      | Required `""`     |
+| `alerting.ntfy.url`           | The URL of the target server                                                               | `https://ntfy.sh` |
+| `alerting.ntfy.priority`      | The priority of the alert                                                                  | `3`               |
+| `alerting.ntfy.default-alert` | Default alert configuration. <br />See [Setting a default alert](#setting-a-default-alert) | N/A               |
+
+[ntfy](https://github.com/binwiederhier/ntfy) is an amazing project that allows you to subscribe to desktop
+and mobile notifications, making it an awesome addition to Gatus.
+
+Example:
+```yaml
+alerting:
+  ntfy:
+    topic: "gatus-test-topic"
+    priority: 2
+    default-alert:
+      enabled: true
+      failure-threshold: 3
+      send-on-resolved: true
+
+endpoints:
+  - name: website
+    interval: 5m
+    url: "https://twin.sh/health"
+    conditions:
+      - "[STATUS] == 200"
+      - "[BODY].status == UP"
+      - "[RESPONSE_TIME] < 300"
+    alerts:
+      - type: ntfy
+```
+
+
 #### Configuring Opsgenie alerts
 | Parameter                         | Description                                                                                | Default              |
 |:----------------------------------|:-------------------------------------------------------------------------------------------|:---------------------|
@@ -769,6 +826,7 @@ Here's an example of what the notifications look like:
 
 ![Teams notifications](.github/assets/teams-alerts.png)
 
+
 #### Configuring Telegram alerts
 | Parameter                         | Description                                                                                | Default                    |
 |:----------------------------------|:-------------------------------------------------------------------------------------------|:---------------------------|
@@ -776,6 +834,7 @@ Here's an example of what the notifications look like:
 | `alerting.telegram.token`         | Telegram Bot Token                                                                         | Required `""`              |
 | `alerting.telegram.id`            | Telegram User ID                                                                           | Required `""`              |
 | `alerting.telegram.api-url`       | Telegram API URL                                                                           | `https://api.telegram.org` |
+| `alerting.telegram.client`        | Client configuration. <br />See [Client configuration](#client-configuration).             | `{}`                       |
 | `alerting.telegram.default-alert` | Default alert configuration. <br />See [Setting a default alert](#setting-a-default-alert) | N/A                        |
 
 ```yaml
@@ -836,6 +895,7 @@ endpoints:
         description: "healthcheck failed"
 ```
 
+
 #### Configuring custom alerts
 | Parameter                       | Description                                                                                | Default       |
 |:--------------------------------|:-------------------------------------------------------------------------------------------|:--------------|
@@ -996,6 +1056,7 @@ endpoints:
       - type: pagerduty
 ```
 
+
 ### Maintenance
 If you have maintenance windows, you may not want to be annoyed by alerts.
 To do that, you'll have to use the maintenance configuration:
@@ -1034,6 +1095,7 @@ maintenance:
 | `security.basic`                 | HTTP Basic configuration     | `{}`          |
 | `security.oidc`                  | OpenID Connect configuration | `{}`          |
 
+
 #### Basic
 | Parameter                               | Description                                                                        | Default       |
 |:----------------------------------------|:-----------------------------------------------------------------------------------|:--------------|
@@ -1052,7 +1114,8 @@ security:
 **WARNING:** Make sure to carefully select to cost of the bcrypt hash. The higher the cost, the longer it takes to compute the hash,
 and basic auth verifies the password against the hash on every request. As of 2022-01-08, I suggest a cost of 8.
 
-#### OIDC (ALPHA)
+
+#### OIDC
 | Parameter                        | Description                                                    | Default       |
 |:---------------------------------|:---------------------------------------------------------------|:--------------|
 | `security.oidc`                  | OpenID Connect configuration                                   | `{}`          |
@@ -1075,7 +1138,7 @@ security:
     #allowed-subjects: ["johndoe@example.com"]
 ```
 
-**NOTE:** The OIDC feature is currently in Alpha. Breaking changes may occur. Use this feature at your own risk.
+Confused? Read [Securing Gatus with OIDC using Auth0](https://twin.sh/articles/56/securing-gatus-with-oidc-using-auth0).
 
 
 ### Metrics
@@ -1165,7 +1228,6 @@ and [helmfile example](https://github.com/avakarev/gatus-chart#helmfileyaml-exam
 Gatus can be deployed on Terraform by using the following module: [terraform-kubernetes-gatus](https://github.com/TwiN/terraform-kubernetes-gatus).
 
 
-
 ## Running the tests
 ```console
 go test ./... -mod vendor
@@ -1268,6 +1330,39 @@ This works for applications such as databases (Postgres, MySQL, etc.) and caches
 something at the given address listening to the given port, and that a connection to that address was successfully
 established.
 
+### Monitoring a UDP endpoint
+By prefixing `endpoints[].url` with `udp:\\`, you can monitor UDP endpoints at a very basic level:
+
+```yaml
+endpoints:
+  - name: iper server
+    url: "udp://127.0.0.1:12345"
+    interval: 30s
+    conditions:
+      - "[CONNECTED] == true"
+```
+
+Placeholders `[STATUS]` and `[BODY]` as well as the fields `endpoints[].body`, `endpoints[].headers`,
+`endpoints[].method` and `endpoints[].graphql` are not supported for UDP endpoints.
+
+This works for UDP based application.
+
+### Monitoring a SCTP endpoint
+By prefixing `endpoints[].url` with `sctp:\\`, you can monitor TCP endpoints at a very basic level:
+
+```yaml
+endpoints:
+  - name: amf
+    url: "sctp://127.0.0.1:38412"
+    interval: 30s
+    conditions:
+      - "[CONNECTED] == true"
+```
+
+Placeholders `[STATUS]` and `[BODY]` as well as the fields `endpoints[].body`, `endpoints[].headers`,
+`endpoints[].method` and `endpoints[].graphql` are not supported for SCTP endpoints.
+
+This works for SCTP based application.
 
 ### Monitoring an endpoint using ICMP
 By prefixing `endpoints[].url` with `icmp:\\`, you can monitor endpoints at a very basic level using ICMP, or more
@@ -1337,6 +1432,25 @@ endpoints:
 ```
 
 
+### Monitoring domain expiration
+You can monitor the expiration of a domain with all endpoint types except for DNS by using the `[DOMAIN_EXPIRATION]`
+placeholder:
+```yaml
+endpoints:
+  - name: check-domain-and-certificate-expiration
+    url: "https://example.org"
+    interval: 1h
+    conditions:
+      - "[DOMAIN_EXPIRATION] > 720h"
+      - "[CERTIFICATE_EXPIRATION] > 240h"
+```
+
+**NOTE**: The usage of the `[DOMAIN_EXPIRATION]` placeholder requires Gatus to send a request to the official IANA WHOIS service [through a library](https://github.com/TwiN/whois)
+and in some cases, a secondary request to a TLD-specific WHOIS server (e.g. `whois.nic.sh`). 
+To prevent the WHOIS service from throttling your IP address if you send too many requests, Gatus will prevent you from
+using the `[DOMAIN_EXPIRATION]` placeholder on an endpoint with an interval of less than `5m`.
+
+
 ### disable-monitoring-lock
 Setting `disable-monitoring-lock` to `true` means that multiple endpoints could be monitored at the same time.
 
@@ -1408,7 +1522,7 @@ endpoints:
     conditions:
       - "[STATUS] == 200"
 
-  - name: random endpoint that isn't part of a group
+  - name: random endpoint that is not part of a group
     url: "https://example.org/"
     interval: 5m
     conditions:
@@ -1434,6 +1548,44 @@ web:
   port: ${PORT}
 ```
 
+
+### Keeping your configuration small
+While not specific to Gatus, you can leverage YAML anchors to create a default configuration.
+If you have a large configuration file, this should help you keep things clean.
+
+<details>
+  <summary>Example</summary>
+
+```yaml
+default-endpoint: &defaults
+  group: core
+  interval: 5m
+  client:
+    insecure: true
+    timeout: 30s
+  conditions:
+    - "[STATUS] == 200"
+
+endpoints:
+  - name: anchor-example-1
+    <<: *defaults               # This will merge the configuration under &defaults with this endpoint
+    url: "https://example.org"
+
+  - name: anchor-example-2
+    <<: *defaults 
+    group: example              # This will override the group defined in &defaults
+    url: "https://example.com"
+
+  - name: anchor-example-3
+    <<: *defaults
+    url: "https://twin.sh/health"
+    conditions:                # This will override the conditions defined in &defaults
+      - "[STATUS] == 200"
+      - "[BODY].status == UP"
+```
+</details>
+
+
 ### Badges
 #### Uptime
 ![Uptime 1h](https://status.twin.sh/api/v1/endpoints/core_blog-external/uptimes/1h/badge.svg)
@@ -1498,8 +1650,9 @@ Where:
 - `{duration}` is `7d`, `24h` or `1h`
 - `{key}` has the pattern `<GROUP_NAME>_<ENDPOINT_NAME>` in which both variables have ` `, `/`, `_`, `,` and `.` replaced by `-`.
 
+
 ##### How to change the color thresholds of the response time badge  
-To change the response time badges threshold, a corresponding configuration can be added to an endpoint.   
+To change the response time badges' threshold, a corresponding configuration can be added to an endpoint.   
 The values in the array correspond to the levels [Awesome, Great, Good, Passable, Bad]  
 All five values must be given in milliseconds (ms).  
 
@@ -1517,6 +1670,7 @@ endpoints:
         thresholds: [550, 850, 1350, 1650, 1750]
 ```
 
+
 ### API
 Gatus provides a simple read-only API that can be queried in order to programmatically determine endpoint status and history.
 

alerting/alert/alert.go

@@ -79,6 +79,7 @@ func (alert Alert) GetDescription() string {
 // IsEnabled returns whether an alert is enabled or not
 func (alert Alert) IsEnabled() bool {
 	if alert.Enabled == nil {
+		// TODO: Default to true in v5.0.0 (unless default-alert.enabled is set to false)
 		return false
 	}
 	return *alert.Enabled

alerting/alert/type.go

@@ -26,6 +26,12 @@ const (
 	// TypeMessagebird is the Type for the messagebird alerting provider
 	TypeMessagebird Type = "messagebird"
 
+	// TypeNtfy is the Type for the ntfy alerting provider
+	TypeNtfy Type = "ntfy"
+
+	// TypeOpsgenie is the Type for the opsgenie alerting provider
+	TypeOpsgenie Type = "opsgenie"
+
 	// TypePagerDuty is the Type for the pagerduty alerting provider
 	TypePagerDuty Type = "pagerduty"
 
@@ -40,7 +46,4 @@ const (
 
 	// TypeTwilio is the Type for the twilio alerting provider
 	TypeTwilio Type = "twilio"
-
-	// TypeOpsgenie is the Type for the opsgenie alerting provider
-	TypeOpsgenie Type = "opsgenie"
 )

alerting/config.go

@@ -10,6 +10,7 @@ import (
 	"github.com/TwiN/gatus/v4/alerting/provider/matrix"
 	"github.com/TwiN/gatus/v4/alerting/provider/mattermost"
 	"github.com/TwiN/gatus/v4/alerting/provider/messagebird"
+	"github.com/TwiN/gatus/v4/alerting/provider/ntfy"
 	"github.com/TwiN/gatus/v4/alerting/provider/opsgenie"
 	"github.com/TwiN/gatus/v4/alerting/provider/pagerduty"
 	"github.com/TwiN/gatus/v4/alerting/provider/slack"
@@ -23,7 +24,7 @@ type Config struct {
 	// Custom is the configuration for the custom alerting provider
 	Custom *custom.AlertProvider `yaml:"custom,omitempty"`
 
-	// googlechat is the configuration for the Google chat alerting provider
+	// GoogleChat is the configuration for the Google chat alerting provider
 	GoogleChat *googlechat.AlertProvider `yaml:"googlechat,omitempty"`
 
 	// Discord is the configuration for the discord alerting provider
@@ -41,6 +42,12 @@ type Config struct {
 	// Messagebird is the configuration for the messagebird alerting provider
 	Messagebird *messagebird.AlertProvider `yaml:"messagebird,omitempty"`
 
+	// Ntfy is the configuration for the ntfy alerting provider
+	Ntfy *ntfy.AlertProvider `yaml:"ntfy,omitempty"`
+
+	// Opsgenie is the configuration for the opsgenie alerting provider
+	Opsgenie *opsgenie.AlertProvider `yaml:"opsgenie,omitempty"`
+
 	// PagerDuty is the configuration for the pagerduty alerting provider
 	PagerDuty *pagerduty.AlertProvider `yaml:"pagerduty,omitempty"`
 
@@ -55,9 +62,6 @@ type Config struct {
 
 	// Twilio is the configuration for the twilio alerting provider
 	Twilio *twilio.AlertProvider `yaml:"twilio,omitempty"`
-
-	// Opsgenie is the configuration for the opsgenie alerting provider
-	Opsgenie *opsgenie.AlertProvider `yaml:"opsgenie,omitempty"`
 }
 
 // GetAlertingProviderByAlertType returns an provider.AlertProvider by its corresponding alert.Type
@@ -105,6 +109,12 @@ func (config Config) GetAlertingProviderByAlertType(alertType alert.Type) provid
 			return nil
 		}
 		return config.Messagebird
+	case alert.TypeNtfy:
+		if config.Ntfy == nil {
+			// Since we're returning an interface, we need to explicitly return nil, even if the provider itself is nil
+			return nil
+		}
+		return config.Ntfy
 	case alert.TypeOpsgenie:
 		if config.Opsgenie == nil {
 			// Since we're returning an interface, we need to explicitly return nil, even if the provider itself is nil

alerting/provider/custom/custom.go

@@ -84,6 +84,7 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 	if err != nil {
 		return err
 	}
+	defer response.Body.Close()
 	if response.StatusCode > 399 {
 		body, _ := io.ReadAll(response.Body)
 		return fmt.Errorf("call to provider alert returned status code %d: %s", response.StatusCode, string(body))

alerting/provider/custom/custom_test.go

@@ -13,14 +13,24 @@ import (
 )
 
 func TestAlertProvider_IsValid(t *testing.T) {
-	invalidProvider := AlertProvider{URL: ""}
-	if invalidProvider.IsValid() {
-		t.Error("provider shouldn't have been valid")
-	}
-	validProvider := AlertProvider{URL: "https://example.com"}
-	if !validProvider.IsValid() {
-		t.Error("provider should've been valid")
-	}
+	t.Run("invalid-provider", func(t *testing.T) {
+		invalidProvider := AlertProvider{URL: ""}
+		if invalidProvider.IsValid() {
+			t.Error("provider shouldn't have been valid")
+		}
+	})
+	t.Run("valid-provider", func(t *testing.T) {
+		validProvider := AlertProvider{URL: "https://example.com"}
+		if validProvider.ClientConfig != nil {
+			t.Error("provider client config should have been nil prior to IsValid() being executed")
+		}
+		if !validProvider.IsValid() {
+			t.Error("provider should've been valid")
+		}
+		if validProvider.ClientConfig == nil {
+			t.Error("provider client config should have been set after IsValid() was executed")
+		}
+	})
 }
 
 func TestAlertProvider_Send(t *testing.T) {

alerting/provider/discord/discord.go

@@ -2,6 +2,7 @@ package discord
 
 import (
 	"bytes"
+	"encoding/json"
 	"fmt"
 	"io"
 	"net/http"
@@ -44,7 +45,7 @@ func (provider *AlertProvider) IsValid() bool {
 
 // Send an alert using the provider
 func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) error {
-	buffer := bytes.NewBuffer([]byte(provider.buildRequestBody(endpoint, alert, result, resolved)))
+	buffer := bytes.NewBuffer(provider.buildRequestBody(endpoint, alert, result, resolved))
 	request, err := http.NewRequest(http.MethodPost, provider.getWebhookURLForGroup(endpoint.Group), buffer)
 	if err != nil {
 		return err
@@ -54,6 +55,7 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 	if err != nil {
 		return err
 	}
+	defer response.Body.Close()
 	if response.StatusCode > 399 {
 		body, _ := io.ReadAll(response.Body)
 		return fmt.Errorf("call to provider alert returned status code %d: %s", response.StatusCode, string(body))
@@ -61,8 +63,26 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 	return err
 }
 
+type Body struct {
+	Content string  `json:"content"`
+	Embeds  []Embed `json:"embeds"`
+}
+
+type Embed struct {
+	Title       string  `json:"title"`
+	Description string  `json:"description"`
+	Color       int     `json:"color"`
+	Fields      []Field `json:"fields"`
+}
+
+type Field struct {
+	Name   string `json:"name"`
+	Value  string `json:"value"`
+	Inline bool   `json:"inline"`
+}
+
 // buildRequestBody builds the request body for the provider
-func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) string {
+func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) []byte {
 	var message, results string
 	var colorCode int
 	if resolved {
@@ -79,29 +99,30 @@ func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *
 		} else {
 			prefix = ":x:"
 		}
-		results += fmt.Sprintf("%s - `%s`\\n", prefix, conditionResult.Condition)
+		results += fmt.Sprintf("%s - `%s`\n", prefix, conditionResult.Condition)
 	}
 	var description string
 	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
-		description = ":\\n> " + alertDescription
+		description = ":\n> " + alertDescription
 	}
-	return fmt.Sprintf(`{
-  "content": "",
-  "embeds": [
-    {
-      "title": ":helmet_with_white_cross: Gatus",
-      "description": "%s%s",
-      "color": %d,
-      "fields": [
-        {
-          "name": "Condition results",
-          "value": "%s",
-          "inline": false
-        }
-      ]
-    }
-  ]
-}`, message, description, colorCode, results)
+	body, _ := json.Marshal(Body{
+		Content: "",
+		Embeds: []Embed{
+			{
+				Title:       ":helmet_with_white_cross: Gatus",
+				Description: message + description,
+				Color:       colorCode,
+				Fields: []Field{
+					{
+						Name:   "Condition results",
+						Value:  results,
+						Inline: false,
+					},
+				},
+			},
+		},
+	})
+	return body
 }
 
 // getWebhookURLForGroup returns the appropriate Webhook URL integration to for a given group

alerting/provider/discord/discord_test.go

@@ -151,14 +151,14 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 			Provider:     AlertProvider{},
 			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     false,
-			ExpectedBody: "{\n  \"content\": \"\",\n  \"embeds\": [\n    {\n      \"title\": \":helmet_with_white_cross: Gatus\",\n      \"description\": \"An alert for **endpoint-name** has been triggered due to having failed 3 time(s) in a row:\\n> description-1\",\n      \"color\": 15158332,\n      \"fields\": [\n        {\n          \"name\": \"Condition results\",\n          \"value\": \":x: - `[CONNECTED] == true`\\n:x: - `[STATUS] == 200`\\n\",\n          \"inline\": false\n        }\n      ]\n    }\n  ]\n}",
+			ExpectedBody: "{\"content\":\"\",\"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",
 			Provider:     AlertProvider{},
 			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     true,
-			ExpectedBody: "{\n  \"content\": \"\",\n  \"embeds\": [\n    {\n      \"title\": \":helmet_with_white_cross: Gatus\",\n      \"description\": \"An alert for **endpoint-name** has been resolved after passing successfully 5 time(s) in a row:\\n> description-2\",\n      \"color\": 3066993,\n      \"fields\": [\n        {\n          \"name\": \"Condition results\",\n          \"value\": \":white_check_mark: - `[CONNECTED] == true`\\n:white_check_mark: - `[STATUS] == 200`\\n\",\n          \"inline\": false\n        }\n      ]\n    }\n  ]\n}",
+			ExpectedBody: "{\"content\":\"\",\"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 {
@@ -170,15 +170,16 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 					ConditionResults: []*core.ConditionResult{
 						{Condition: "[CONNECTED] == true", Success: scenario.Resolved},
 						{Condition: "[STATUS] == 200", Success: scenario.Resolved},
+						{Condition: "[BODY] != \"\"", Success: scenario.Resolved},
 					},
 				},
 				scenario.Resolved,
 			)
-			if body != scenario.ExpectedBody {
-				t.Errorf("expected %s, got %s", scenario.ExpectedBody, body)
+			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([]byte(body), &out); err != nil {
+			if err := json.Unmarshal(body, &out); err != nil {
 				t.Error("expected body to be valid JSON, got error:", err.Error())
 			}
 		})

alerting/provider/googlechat/googlechat.go

@@ -2,6 +2,7 @@ package googlechat
 
 import (
 	"bytes"
+	"encoding/json"
 	"fmt"
 	"io"
 	"net/http"
@@ -36,7 +37,6 @@ func (provider *AlertProvider) IsValid() bool {
 	if provider.ClientConfig == nil {
 		provider.ClientConfig = client.GetDefaultConfig()
 	}
-
 	registeredGroups := make(map[string]bool)
 	if provider.Overrides != nil {
 		for _, override := range provider.Overrides {
@@ -46,13 +46,12 @@ func (provider *AlertProvider) IsValid() bool {
 			registeredGroups[override.Group] = true
 		}
 	}
-
 	return len(provider.WebhookURL) > 0
 }
 
 // Send an alert using the provider
 func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) error {
-	buffer := bytes.NewBuffer([]byte(provider.buildRequestBody(endpoint, alert, result, resolved)))
+	buffer := bytes.NewBuffer(provider.buildRequestBody(endpoint, alert, result, resolved))
 	request, err := http.NewRequest(http.MethodPost, provider.getWebhookURLForGroup(endpoint.Group), buffer)
 	if err != nil {
 		return err
@@ -62,6 +61,7 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 	if err != nil {
 		return err
 	}
+	defer response.Body.Close()
 	if response.StatusCode > 399 {
 		body, _ := io.ReadAll(response.Body)
 		return fmt.Errorf("call to provider alert returned status code %d: %s", response.StatusCode, string(body))
@@ -69,8 +69,50 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 	return err
 }
 
+type Body struct {
+	Cards []Cards `json:"cards"`
+}
+
+type Cards struct {
+	Sections []Sections `json:"sections"`
+}
+
+type Sections struct {
+	Widgets []Widgets `json:"widgets"`
+}
+
+type Widgets struct {
+	KeyValue *KeyValue `json:"keyValue,omitempty"`
+	Buttons  []Buttons `json:"buttons,omitempty"`
+}
+
+type KeyValue struct {
+	TopLabel         string `json:"topLabel,omitempty"`
+	Content          string `json:"content,omitempty"`
+	ContentMultiline string `json:"contentMultiline,omitempty"`
+	BottomLabel      string `json:"bottomLabel,omitempty"`
+	Icon             string `json:"icon,omitempty"`
+}
+
+type Buttons struct {
+	TextButton TextButton `json:"textButton"`
+}
+
+type TextButton struct {
+	Text    string  `json:"text"`
+	OnClick OnClick `json:"onClick"`
+}
+
+type OnClick struct {
+	OpenLink OpenLink `json:"openLink"`
+}
+
+type OpenLink struct {
+	URL string `json:"url"`
+}
+
 // buildRequestBody builds the request body for the provider
-func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) string {
+func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) []byte {
 	var message, color string
 	if resolved {
 		color = "#36A64F"
@@ -93,49 +135,52 @@ func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *
 	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
 		description = ":: " + alertDescription
 	}
-	return fmt.Sprintf(`{
-    "cards": [
-  {
-    "sections": [
-      {
-        "widgets": [
-          {
-            "keyValue": {
-              "topLabel": "%s [%s]",
-              "content": "%s",
-              "contentMultiline": "true",
-              "bottomLabel": "%s",
-              "icon": "BOOKMARK"
-            }
-          },
-          {
-            "keyValue": {
-              "topLabel": "Condition results",
-              "content": "%s",
-              "contentMultiline": "true",
-              "icon": "DESCRIPTION"
-            }
-          },
-          {
-            "buttons": [
-              {
-                "textButton": {
-                  "text": "URL",
-                  "onClick": {
-                    "openLink": {
-                      "url": "%s"
-                    }
-                  }
-                }
-              }
-            ]
-          }
-        ]
-      }
-    ]
-  }
-]
-}`, endpoint.Name, endpoint.Group, message, description, results, endpoint.URL)
+	payload := Body{
+		Cards: []Cards{
+			{
+				Sections: []Sections{
+					{
+						Widgets: []Widgets{
+							{
+								KeyValue: &KeyValue{
+									TopLabel:         endpoint.DisplayName(),
+									Content:          message,
+									ContentMultiline: "true",
+									BottomLabel:      description,
+									Icon:             "BOOKMARK",
+								},
+							},
+							{
+								KeyValue: &KeyValue{
+									TopLabel:         "Condition results",
+									Content:          results,
+									ContentMultiline: "true",
+									Icon:             "DESCRIPTION",
+								},
+							},
+						},
+					},
+				},
+			},
+		},
+	}
+	if endpoint.Type() == core.EndpointTypeHTTP {
+		// We only include a button targeting the URL if the endpoint is an HTTP endpoint
+		// If the URL isn't prefixed with https://, Google Chat will just display a blank message aynways.
+		// See https://github.com/TwiN/gatus/issues/362
+		payload.Cards[0].Sections[0].Widgets = append(payload.Cards[0].Sections[0].Widgets, Widgets{
+			Buttons: []Buttons{
+				{
+					TextButton: TextButton{
+						Text:    "URL",
+						OnClick: OnClick{OpenLink: OpenLink{URL: endpoint.URL}},
+					},
+				},
+			},
+		})
+	}
+	body, _ := json.Marshal(payload)
+	return body
 }
 
 // getWebhookURLForGroup returns the appropriate Webhook URL integration to for a given group

alerting/provider/googlechat/googlechat_test.go

@@ -141,6 +141,7 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 	secondDescription := "description-2"
 	scenarios := []struct {
 		Name         string
+		Endpoint     core.Endpoint
 		Provider     AlertProvider
 		Alert        alert.Alert
 		Resolved     bool
@@ -148,23 +149,41 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 	}{
 		{
 			Name:         "triggered",
+			Endpoint:     core.Endpoint{Name: "endpoint-name", URL: "https://example.org"},
 			Provider:     AlertProvider{},
 			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     false,
-			ExpectedBody: "{\n    \"cards\": [\n  {\n    \"sections\": [\n      {\n        \"widgets\": [\n          {\n            \"keyValue\": {\n              \"topLabel\": \"endpoint-name []\",\n              \"content\": \"\u003cfont color='#DD0000'\u003eAn alert has been triggered due to having failed 3 time(s) in a row\u003c/font\u003e\",\n              \"contentMultiline\": \"true\",\n              \"bottomLabel\": \":: description-1\",\n              \"icon\": \"BOOKMARK\"\n            }\n          },\n          {\n            \"keyValue\": {\n              \"topLabel\": \"Condition results\",\n              \"content\": \"❌   [CONNECTED] == true\u003cbr\u003e❌   [STATUS] == 200\u003cbr\u003e\",\n              \"contentMultiline\": \"true\",\n              \"icon\": \"DESCRIPTION\"\n            }\n          },\n          {\n            \"buttons\": [\n              {\n                \"textButton\": {\n                  \"text\": \"URL\",\n                  \"onClick\": {\n                    \"openLink\": {\n                      \"url\": \"\"\n                    }\n                  }\n                }\n              }\n            ]\n          }\n        ]\n      }\n    ]\n  }\n]\n}",
+			ExpectedBody: `{"cards":[{"sections":[{"widgets":[{"keyValue":{"topLabel":"endpoint-name","content":"\u003cfont color='#DD0000'\u003eAn alert has been triggered due to having failed 3 time(s) in a row\u003c/font\u003e","contentMultiline":"true","bottomLabel":":: description-1","icon":"BOOKMARK"}},{"keyValue":{"topLabel":"Condition results","content":"❌   [CONNECTED] == true\u003cbr\u003e❌   [STATUS] == 200\u003cbr\u003e","contentMultiline":"true","icon":"DESCRIPTION"}},{"buttons":[{"textButton":{"text":"URL","onClick":{"openLink":{"url":"https://example.org"}}}}]}]}]}]}`,
 		},
 		{
 			Name:         "resolved",
+			Endpoint:     core.Endpoint{Name: "endpoint-name", URL: "https://example.org"},
 			Provider:     AlertProvider{},
 			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     true,
-			ExpectedBody: "{\n    \"cards\": [\n  {\n    \"sections\": [\n      {\n        \"widgets\": [\n          {\n            \"keyValue\": {\n              \"topLabel\": \"endpoint-name []\",\n              \"content\": \"\u003cfont color='#36A64F'\u003eAn alert has been resolved after passing successfully 5 time(s) in a row\u003c/font\u003e\",\n              \"contentMultiline\": \"true\",\n              \"bottomLabel\": \":: description-2\",\n              \"icon\": \"BOOKMARK\"\n            }\n          },\n          {\n            \"keyValue\": {\n              \"topLabel\": \"Condition results\",\n              \"content\": \"✅   [CONNECTED] == true\u003cbr\u003e✅   [STATUS] == 200\u003cbr\u003e\",\n              \"contentMultiline\": \"true\",\n              \"icon\": \"DESCRIPTION\"\n            }\n          },\n          {\n            \"buttons\": [\n              {\n                \"textButton\": {\n                  \"text\": \"URL\",\n                  \"onClick\": {\n                    \"openLink\": {\n                      \"url\": \"\"\n                    }\n                  }\n                }\n              }\n            ]\n          }\n        ]\n      }\n    ]\n  }\n]\n}",
+			ExpectedBody: `{"cards":[{"sections":[{"widgets":[{"keyValue":{"topLabel":"endpoint-name","content":"\u003cfont color='#36A64F'\u003eAn alert has been resolved after passing successfully 5 time(s) in a row\u003c/font\u003e","contentMultiline":"true","bottomLabel":":: description-2","icon":"BOOKMARK"}},{"keyValue":{"topLabel":"Condition results","content":"✅   [CONNECTED] == true\u003cbr\u003e✅   [STATUS] == 200\u003cbr\u003e","contentMultiline":"true","icon":"DESCRIPTION"}},{"buttons":[{"textButton":{"text":"URL","onClick":{"openLink":{"url":"https://example.org"}}}}]}]}]}]}`,
+		},
+		{
+			Name:         "icmp-should-not-include-url", // See https://github.com/TwiN/gatus/issues/362
+			Endpoint:     core.Endpoint{Name: "endpoint-name", URL: "icmp://example.org"},
+			Provider:     AlertProvider{},
+			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:     false,
+			ExpectedBody: `{"cards":[{"sections":[{"widgets":[{"keyValue":{"topLabel":"endpoint-name","content":"\u003cfont color='#DD0000'\u003eAn alert has been triggered due to having failed 3 time(s) in a row\u003c/font\u003e","contentMultiline":"true","bottomLabel":":: description-1","icon":"BOOKMARK"}},{"keyValue":{"topLabel":"Condition results","content":"❌   [CONNECTED] == true\u003cbr\u003e❌   [STATUS] == 200\u003cbr\u003e","contentMultiline":"true","icon":"DESCRIPTION"}}]}]}]}`,
+		},
+		{
+			Name:         "tcp-should-not-include-url", // See https://github.com/TwiN/gatus/issues/362
+			Endpoint:     core.Endpoint{Name: "endpoint-name", URL: "tcp://example.org"},
+			Provider:     AlertProvider{},
+			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:     false,
+			ExpectedBody: `{"cards":[{"sections":[{"widgets":[{"keyValue":{"topLabel":"endpoint-name","content":"\u003cfont color='#DD0000'\u003eAn alert has been triggered due to having failed 3 time(s) in a row\u003c/font\u003e","contentMultiline":"true","bottomLabel":":: description-1","icon":"BOOKMARK"}},{"keyValue":{"topLabel":"Condition results","content":"❌   [CONNECTED] == true\u003cbr\u003e❌   [STATUS] == 200\u003cbr\u003e","contentMultiline":"true","icon":"DESCRIPTION"}}]}]}]}`,
 		},
 	}
 	for _, scenario := range scenarios {
 		t.Run(scenario.Name, func(t *testing.T) {
 			body := scenario.Provider.buildRequestBody(
-				&core.Endpoint{Name: "endpoint-name"},
+				&scenario.Endpoint,
 				&scenario.Alert,
 				&core.Result{
 					ConditionResults: []*core.ConditionResult{
@@ -174,13 +193,11 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 				},
 				scenario.Resolved,
 			)
-			b, _ := json.Marshal(body)
-			e, _ := json.Marshal(scenario.ExpectedBody)
-			if body != scenario.ExpectedBody {
-				t.Errorf("expected %s, got %s", e, b)
+			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([]byte(body), &out); err != nil {
+			if err := json.Unmarshal(body, &out); err != nil {
 				t.Error("expected body to be valid JSON, got error:", err.Error())
 			}
 		})

alerting/provider/matrix/matrix.go

@@ -2,6 +2,7 @@ package matrix
 
 import (
 	"bytes"
+	"encoding/json"
 	"fmt"
 	"io"
 	"math/rand"
@@ -61,7 +62,7 @@ func (provider *AlertProvider) IsValid() bool {
 
 // Send an alert using the provider
 func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) error {
-	buffer := bytes.NewBuffer([]byte(provider.buildRequestBody(endpoint, alert, result, resolved)))
+	buffer := bytes.NewBuffer(provider.buildRequestBody(endpoint, alert, result, resolved))
 	config := provider.getConfigForGroup(endpoint.Group)
 	if config.ServerURL == "" {
 		config.ServerURL = defaultHomeserverURL
@@ -86,6 +87,7 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 	if err != nil {
 		return err
 	}
+	defer response.Body.Close()
 	if response.StatusCode > 399 {
 		body, _ := io.ReadAll(response.Body)
 		return fmt.Errorf("call to provider alert returned status code %d: %s", response.StatusCode, string(body))
@@ -93,17 +95,22 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 	return err
 }
 
+type Body struct {
+	MsgType       string `json:"msgtype"`
+	Format        string `json:"format"`
+	Body          string `json:"body"`
+	FormattedBody string `json:"formatted_body"`
+}
+
 // buildRequestBody builds the request body for the provider
-func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) string {
-	return fmt.Sprintf(`{
-	"msgtype": "m.text",
-	"format": "org.matrix.custom.html",
-	"body": "%s",
-	"formatted_body": "%s"
-}`,
-		buildPlaintextMessageBody(endpoint, alert, result, resolved),
-		buildHTMLMessageBody(endpoint, alert, result, resolved),
-	)
+func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) []byte {
+	body, _ := json.Marshal(Body{
+		MsgType:       "m.text",
+		Format:        "org.matrix.custom.html",
+		Body:          buildPlaintextMessageBody(endpoint, alert, result, resolved),
+		FormattedBody: buildHTMLMessageBody(endpoint, alert, result, resolved),
+	})
+	return body
 }
 
 // buildPlaintextMessageBody builds the message body in plaintext to include in request
@@ -121,13 +128,13 @@ func buildPlaintextMessageBody(endpoint *core.Endpoint, alert *alert.Alert, resu
 		} else {
 			prefix = "✕"
 		}
-		results += fmt.Sprintf("\\n%s - %s", prefix, conditionResult.Condition)
+		results += fmt.Sprintf("\n%s - %s", prefix, conditionResult.Condition)
 	}
 	var description string
 	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
-		description = "\\n" + alertDescription
+		description = "\n" + alertDescription
 	}
-	return fmt.Sprintf("%s%s\\n%s", message, description, results)
+	return fmt.Sprintf("%s%s\n%s", message, description, results)
 }
 
 // buildHTMLMessageBody builds the message body in HTML to include in request
@@ -149,9 +156,9 @@ func buildHTMLMessageBody(endpoint *core.Endpoint, alert *alert.Alert, result *c
 	}
 	var description string
 	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
-		description = fmt.Sprintf("\\n<blockquote>%s</blockquote>", alertDescription)
+		description = fmt.Sprintf("\n<blockquote>%s</blockquote>", alertDescription)
 	}
-	return fmt.Sprintf("<h3>%s</h3>%s\\n<h5>Condition results</h5><ul>%s</ul>", message, description, results)
+	return fmt.Sprintf("<h3>%s</h3>%s\n<h5>Condition results</h5><ul>%s</ul>", message, description, results)
 }
 
 // getConfigForGroup returns the appropriate configuration for a given group
@@ -159,31 +166,21 @@ func (provider *AlertProvider) getConfigForGroup(group string) MatrixProviderCon
 	if provider.Overrides != nil {
 		for _, override := range provider.Overrides {
 			if group == override.Group {
-				return MatrixProviderConfig{
-					ServerURL:      override.ServerURL,
-					AccessToken:    override.AccessToken,
-					InternalRoomID: override.InternalRoomID,
-				}
+				return override.MatrixProviderConfig
 			}
 		}
 	}
-	return MatrixProviderConfig{
-		ServerURL:      provider.ServerURL,
-		AccessToken:    provider.AccessToken,
-		InternalRoomID: provider.InternalRoomID,
-	}
+	return provider.MatrixProviderConfig
 }
 
 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))]
 	}
-
 	return string(b)
 }
 

alerting/provider/matrix/matrix_test.go

@@ -184,14 +184,14 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 			Provider:     AlertProvider{},
 			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     false,
-			ExpectedBody: "{\n\t\"msgtype\": \"m.text\",\n\t\"format\": \"org.matrix.custom.html\",\n\t\"body\": \"An alert for `endpoint-name` has been triggered due to having failed 3 time(s) in a row\\ndescription-1\\n\\n✕ - [CONNECTED] == true\\n✕ - [STATUS] == 200\",\n\t\"formatted_body\": \"<h3>An alert for <code>endpoint-name</code> has been triggered due to having failed 3 time(s) in a row</h3>\\n<blockquote>description-1</blockquote>\\n<h5>Condition results</h5><ul><li>❌ - <code>[CONNECTED] == true</code></li><li>❌ - <code>[STATUS] == 200</code></li></ul>\"\n}",
+			ExpectedBody: "{\"msgtype\":\"m.text\",\"format\":\"org.matrix.custom.html\",\"body\":\"An alert for `endpoint-name` has been triggered due to having failed 3 time(s) in a row\\ndescription-1\\n\\n✕ - [CONNECTED] == true\\n✕ - [STATUS] == 200\",\"formatted_body\":\"\\u003ch3\\u003eAn alert for \\u003ccode\\u003eendpoint-name\\u003c/code\\u003e has been triggered due to having failed 3 time(s) in a row\\u003c/h3\\u003e\\n\\u003cblockquote\\u003edescription-1\\u003c/blockquote\\u003e\\n\\u003ch5\\u003eCondition results\\u003c/h5\\u003e\\u003cul\\u003e\\u003cli\\u003e❌ - \\u003ccode\\u003e[CONNECTED] == true\\u003c/code\\u003e\\u003c/li\\u003e\\u003cli\\u003e❌ - \\u003ccode\\u003e[STATUS] == 200\\u003c/code\\u003e\\u003c/li\\u003e\\u003c/ul\\u003e\"}",
 		},
 		{
 			Name:         "resolved",
 			Provider:     AlertProvider{},
 			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     true,
-			ExpectedBody: "{\n\t\"msgtype\": \"m.text\",\n\t\"format\": \"org.matrix.custom.html\",\n\t\"body\": \"An alert for `endpoint-name` has been resolved after passing successfully 5 time(s) in a row\\ndescription-2\\n\\n✓ - [CONNECTED] == true\\n✓ - [STATUS] == 200\",\n\t\"formatted_body\": \"<h3>An alert for <code>endpoint-name</code> has been resolved after passing successfully 5 time(s) in a row</h3>\\n<blockquote>description-2</blockquote>\\n<h5>Condition results</h5><ul><li>✅ - <code>[CONNECTED] == true</code></li><li>✅ - <code>[STATUS] == 200</code></li></ul>\"\n}",
+			ExpectedBody: "{\"msgtype\":\"m.text\",\"format\":\"org.matrix.custom.html\",\"body\":\"An alert for `endpoint-name` has been resolved after passing successfully 5 time(s) in a row\\ndescription-2\\n\\n✓ - [CONNECTED] == true\\n✓ - [STATUS] == 200\",\"formatted_body\":\"\\u003ch3\\u003eAn alert for \\u003ccode\\u003eendpoint-name\\u003c/code\\u003e has been resolved after passing successfully 5 time(s) in a row\\u003c/h3\\u003e\\n\\u003cblockquote\\u003edescription-2\\u003c/blockquote\\u003e\\n\\u003ch5\\u003eCondition results\\u003c/h5\\u003e\\u003cul\\u003e\\u003cli\\u003e✅ - \\u003ccode\\u003e[CONNECTED] == true\\u003c/code\\u003e\\u003c/li\\u003e\\u003cli\\u003e✅ - \\u003ccode\\u003e[STATUS] == 200\\u003c/code\\u003e\\u003c/li\\u003e\\u003c/ul\\u003e\"}",
 		},
 	}
 	for _, scenario := range scenarios {
@@ -207,11 +207,11 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 				},
 				scenario.Resolved,
 			)
-			if body != scenario.ExpectedBody {
-				t.Errorf("expected %s, got %s", scenario.ExpectedBody, body)
+			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([]byte(body), &out); err != nil {
+			if err := json.Unmarshal(body, &out); err != nil {
 				t.Error("expected body to be valid JSON, got error:", err.Error())
 			}
 		})

alerting/provider/mattermost/mattermost.go

@@ -2,6 +2,7 @@ package mattermost
 
 import (
 	"bytes"
+	"encoding/json"
 	"fmt"
 	"io"
 	"net/http"
@@ -60,6 +61,7 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 	if err != nil {
 		return err
 	}
+	defer response.Body.Close()
 	if response.StatusCode > 399 {
 		body, _ := io.ReadAll(response.Body)
 		return fmt.Errorf("call to provider alert returned status code %d: %s", response.StatusCode, string(body))
@@ -67,9 +69,31 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 	return err
 }
 
+type Body struct {
+	Text        string       `json:"text"`
+	Username    string       `json:"username"`
+	IconURL     string       `json:"icon_url"`
+	Attachments []Attachment `json:"attachments"`
+}
+
+type Attachment struct {
+	Title    string  `json:"title"`
+	Fallback string  `json:"fallback"`
+	Text     string  `json:"text"`
+	Short    bool    `json:"short"`
+	Color    string  `json:"color"`
+	Fields   []Field `json:"fields"`
+}
+
+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(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) string {
-	var message, color string
+func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) []byte {
+	var message, color, results string
 	if resolved {
 		message = fmt.Sprintf("An alert for *%s* has been resolved after passing successfully %d time(s) in a row", endpoint.DisplayName(), alert.SuccessThreshold)
 		color = "#36A64F"
@@ -77,7 +101,6 @@ func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *
 		message = fmt.Sprintf("An alert for *%s* has been triggered due to having failed %d time(s) in a row", endpoint.DisplayName(), alert.FailureThreshold)
 		color = "#DD0000"
 	}
-	var results string
 	for _, conditionResult := range result.ConditionResults {
 		var prefix string
 		if conditionResult.Success {
@@ -85,38 +108,34 @@ func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *
 		} else {
 			prefix = ":x:"
 		}
-		results += fmt.Sprintf("%s - `%s`\\n", prefix, conditionResult.Condition)
+		results += fmt.Sprintf("%s - `%s`\n", prefix, conditionResult.Condition)
 	}
 	var description string
 	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
-		description = ":\\n> " + alertDescription
+		description = ":\n> " + alertDescription
 	}
-	return fmt.Sprintf(`{
-  "text": "",
-  "username": "gatus",
-  "icon_url": "https://raw.githubusercontent.com/TwiN/gatus/master/.github/assets/logo.png",
-  "attachments": [
-    {
-      "title": ":rescue_worker_helmet: Gatus",
-      "fallback": "Gatus - %s",
-      "text": "%s%s",
-      "short": false,
-      "color": "%s",
-      "fields": [
-        {
-          "title": "URL",
-          "value": "%s",
-          "short": false
-        },
-        {
-          "title": "Condition results",
-          "value": "%s",
-          "short": false
-        }
-      ]
-    }
-  ]
-}`, message, message, description, color, endpoint.URL, results)
+	body, _ := json.Marshal(Body{
+		Text:     "",
+		Username: "gatus",
+		IconURL:  "https://raw.githubusercontent.com/TwiN/gatus/master/.github/assets/logo.png",
+		Attachments: []Attachment{
+			{
+				Title:    ":helmet_with_white_cross: Gatus",
+				Fallback: "Gatus - " + message,
+				Text:     message + description,
+				Short:    false,
+				Color:    color,
+				Fields: []Field{
+					{
+						Title: "Condition results",
+						Value: results,
+						Short: false,
+					},
+				},
+			},
+		},
+	})
+	return body
 }
 
 // getWebhookURLForGroup returns the appropriate Webhook URL integration to for a given group

alerting/provider/mattermost/mattermost_test.go

@@ -155,14 +155,14 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 			Provider:     AlertProvider{},
 			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     false,
-			ExpectedBody: "{\n  \"text\": \"\",\n  \"username\": \"gatus\",\n  \"icon_url\": \"https://raw.githubusercontent.com/TwiN/gatus/master/.github/assets/logo.png\",\n  \"attachments\": [\n    {\n      \"title\": \":rescue_worker_helmet: Gatus\",\n      \"fallback\": \"Gatus - An alert for *endpoint-name* has been triggered due to having failed 3 time(s) in a row\",\n      \"text\": \"An alert for *endpoint-name* has been triggered due to having failed 3 time(s) in a row:\\n> description-1\",\n      \"short\": false,\n      \"color\": \"#DD0000\",\n      \"fields\": [\n        {\n          \"title\": \"URL\",\n          \"value\": \"\",\n          \"short\": false\n        },\n        {\n          \"title\": \"Condition results\",\n          \"value\": \":x: - `[CONNECTED] == true`\\n:x: - `[STATUS] == 200`\\n\",\n          \"short\": false\n        }\n      ]\n    }\n  ]\n}",
+			ExpectedBody: "{\"text\":\"\",\"username\":\"gatus\",\"icon_url\":\"https://raw.githubusercontent.com/TwiN/gatus/master/.github/assets/logo.png\",\"attachments\":[{\"title\":\":helmet_with_white_cross: Gatus\",\"fallback\":\"Gatus - An alert for *endpoint-name* has been triggered due to having failed 3 time(s) in a row\",\"text\":\"An alert for *endpoint-name* has been triggered due to having failed 3 time(s) in a row:\\n\\u003e description-1\",\"short\":false,\"color\":\"#DD0000\",\"fields\":[{\"title\":\"Condition results\",\"value\":\":x: - `[CONNECTED] == true`\\n:x: - `[STATUS] == 200`\\n\",\"short\":false}]}]}",
 		},
 		{
 			Name:         "resolved",
 			Provider:     AlertProvider{},
 			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     true,
-			ExpectedBody: "{\n  \"text\": \"\",\n  \"username\": \"gatus\",\n  \"icon_url\": \"https://raw.githubusercontent.com/TwiN/gatus/master/.github/assets/logo.png\",\n  \"attachments\": [\n    {\n      \"title\": \":rescue_worker_helmet: Gatus\",\n      \"fallback\": \"Gatus - An alert for *endpoint-name* has been resolved after passing successfully 5 time(s) in a row\",\n      \"text\": \"An alert for *endpoint-name* has been resolved after passing successfully 5 time(s) in a row:\\n> description-2\",\n      \"short\": false,\n      \"color\": \"#36A64F\",\n      \"fields\": [\n        {\n          \"title\": \"URL\",\n          \"value\": \"\",\n          \"short\": false\n        },\n        {\n          \"title\": \"Condition results\",\n          \"value\": \":white_check_mark: - `[CONNECTED] == true`\\n:white_check_mark: - `[STATUS] == 200`\\n\",\n          \"short\": false\n        }\n      ]\n    }\n  ]\n}",
+			ExpectedBody: "{\"text\":\"\",\"username\":\"gatus\",\"icon_url\":\"https://raw.githubusercontent.com/TwiN/gatus/master/.github/assets/logo.png\",\"attachments\":[{\"title\":\":helmet_with_white_cross: Gatus\",\"fallback\":\"Gatus - An alert for *endpoint-name* has been resolved after passing successfully 5 time(s) in a row\",\"text\":\"An alert for *endpoint-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 {
@@ -178,11 +178,11 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 				},
 				scenario.Resolved,
 			)
-			if body != scenario.ExpectedBody {
-				t.Errorf("expected %s, got %s", scenario.ExpectedBody, body)
+			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([]byte(body), &out); err != nil {
+			if err := json.Unmarshal(body, &out); err != nil {
 				t.Error("expected body to be valid JSON, got error:", err.Error())
 			}
 		})

alerting/provider/messagebird/messagebird.go

@@ -2,6 +2,7 @@ package messagebird
 
 import (
 	"bytes"
+	"encoding/json"
 	"fmt"
 	"io"
 	"net/http"
@@ -33,7 +34,7 @@ func (provider *AlertProvider) IsValid() bool {
 // Send an alert using the provider
 // Reference doc for messagebird: https://developers.messagebird.com/api/sms-messaging/#send-outbound-sms
 func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) error {
-	buffer := bytes.NewBuffer([]byte(provider.buildRequestBody(endpoint, alert, result, resolved)))
+	buffer := bytes.NewBuffer(provider.buildRequestBody(endpoint, alert, result, resolved))
 	request, err := http.NewRequest(http.MethodPost, restAPIURL, buffer)
 	if err != nil {
 		return err
@@ -44,6 +45,7 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 	if err != nil {
 		return err
 	}
+	defer response.Body.Close()
 	if response.StatusCode > 399 {
 		body, _ := io.ReadAll(response.Body)
 		return fmt.Errorf("call to provider alert returned status code %d: %s", response.StatusCode, string(body))
@@ -51,19 +53,26 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 	return err
 }
 
+type Body struct {
+	Originator string `json:"originator"`
+	Recipients string `json:"recipients"`
+	Body       string `json:"body"`
+}
+
 // buildRequestBody builds the request body for the provider
-func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) string {
+func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) []byte {
 	var message string
 	if resolved {
 		message = fmt.Sprintf("RESOLVED: %s - %s", endpoint.DisplayName(), alert.GetDescription())
 	} else {
 		message = fmt.Sprintf("TRIGGERED: %s - %s", endpoint.DisplayName(), alert.GetDescription())
 	}
-	return fmt.Sprintf(`{
-  "originator": "%s",
-  "recipients": "%s",
-  "body": "%s"
-}`, provider.Originator, provider.Recipients, message)
+	body, _ := json.Marshal(Body{
+		Originator: provider.Originator,
+		Recipients: provider.Recipients,
+		Body:       message,
+	})
+	return body
 }
 
 // GetDefaultAlert returns the provider's default alert configuration

alerting/provider/messagebird/messagebird_test.go

@@ -118,14 +118,14 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 			Provider:     AlertProvider{AccessKey: "1", Originator: "2", Recipients: "3"},
 			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     false,
-			ExpectedBody: "{\n  \"originator\": \"2\",\n  \"recipients\": \"3\",\n  \"body\": \"TRIGGERED: endpoint-name - description-1\"\n}",
+			ExpectedBody: "{\"originator\":\"2\",\"recipients\":\"3\",\"body\":\"TRIGGERED: endpoint-name - description-1\"}",
 		},
 		{
 			Name:         "resolved",
 			Provider:     AlertProvider{AccessKey: "4", Originator: "5", Recipients: "6"},
 			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     true,
-			ExpectedBody: "{\n  \"originator\": \"5\",\n  \"recipients\": \"6\",\n  \"body\": \"RESOLVED: endpoint-name - description-2\"\n}",
+			ExpectedBody: "{\"originator\":\"5\",\"recipients\":\"6\",\"body\":\"RESOLVED: endpoint-name - description-2\"}",
 		},
 	}
 	for _, scenario := range scenarios {
@@ -141,8 +141,8 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 				},
 				scenario.Resolved,
 			)
-			if body != scenario.ExpectedBody {
-				t.Errorf("expected %s, got %s", scenario.ExpectedBody, body)
+			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([]byte(body), &out); err != nil {

alerting/provider/ntfy/ntfy.go

@@ -0,0 +1,95 @@
+package ntfy
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+
+	"github.com/TwiN/gatus/v4/alerting/alert"
+	"github.com/TwiN/gatus/v4/client"
+	"github.com/TwiN/gatus/v4/core"
+)
+
+const (
+	DefaultURL      = "https://ntfy.sh"
+	DefaultPriority = 3
+)
+
+// AlertProvider is the configuration necessary for sending an alert using Slack
+type AlertProvider struct {
+	Topic    string `yaml:"topic"`
+	URL      string `yaml:"url,omitempty"`      // Defaults to DefaultURL
+	Priority int    `yaml:"priority,omitempty"` // Defaults to DefaultPriority
+
+	// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
+	DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
+}
+
+// IsValid returns whether the provider's configuration is valid
+func (provider *AlertProvider) IsValid() bool {
+	if len(provider.URL) == 0 {
+		provider.URL = DefaultURL
+	}
+	if provider.Priority == 0 {
+		provider.Priority = DefaultPriority
+	}
+	return len(provider.URL) > 0 && len(provider.Topic) > 0 && provider.Priority > 0 && provider.Priority < 6
+}
+
+// Send an alert using the provider
+func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) error {
+	buffer := bytes.NewBuffer(provider.buildRequestBody(endpoint, alert, result, resolved))
+	request, err := http.NewRequest(http.MethodPost, provider.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 > 399 {
+		body, _ := io.ReadAll(response.Body)
+		return fmt.Errorf("call to provider alert returned status code %d: %s", response.StatusCode, string(body))
+	}
+	return err
+}
+
+type Body struct {
+	Topic    string   `json:"topic"`
+	Title    string   `json:"title"`
+	Message  string   `json:"message"`
+	Tags     []string `json:"tags"`
+	Priority int      `json:"priority"`
+}
+
+// buildRequestBody builds the request body for the provider
+func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) []byte {
+	var message, tag string
+	if len(alert.GetDescription()) > 0 {
+		message = endpoint.DisplayName() + " - " + alert.GetDescription()
+	} else {
+		message = endpoint.DisplayName()
+	}
+	if resolved {
+		tag = "white_check_mark"
+	} else {
+		tag = "x"
+	}
+	body, _ := json.Marshal(Body{
+		Topic:    provider.Topic,
+		Title:    "Gatus",
+		Message:  message,
+		Tags:     []string{tag},
+		Priority: provider.Priority,
+	})
+	return body
+}
+
+// GetDefaultAlert returns the provider's default alert configuration
+func (provider AlertProvider) GetDefaultAlert() *alert.Alert {
+	return provider.DefaultAlert
+}

alerting/provider/ntfy/ntfy_test.go

@@ -0,0 +1,104 @@
+package ntfy
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/TwiN/gatus/v4/alerting/alert"
+	"github.com/TwiN/gatus/v4/core"
+)
+
+func TestAlertDefaultProvider_IsValid(t *testing.T) {
+	scenarios := []struct {
+		name     string
+		provider AlertProvider
+		expected bool
+	}{
+		{
+			name:     "valid",
+			provider: AlertProvider{URL: "https://ntfy.sh", Topic: "example", Priority: 1},
+			expected: true,
+		},
+		{
+			name:     "no-url-should-use-default-value",
+			provider: AlertProvider{Topic: "example", Priority: 1},
+			expected: true,
+		},
+		{
+			name:     "invalid-topic",
+			provider: AlertProvider{URL: "https://ntfy.sh", Topic: "", Priority: 1},
+			expected: false,
+		},
+		{
+			name:     "invalid-priority-too-high",
+			provider: AlertProvider{URL: "https://ntfy.sh", Topic: "example", Priority: 6},
+			expected: false,
+		},
+		{
+			name:     "invalid-priority-too-low",
+			provider: AlertProvider{URL: "https://ntfy.sh", Topic: "example", Priority: -1},
+			expected: false,
+		},
+		{
+			name:     "no-priority-should-use-default-value",
+			provider: AlertProvider{URL: "https://ntfy.sh", Topic: "example"},
+			expected: true,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			if scenario.provider.IsValid() != scenario.expected {
+				t.Errorf("expected %t, got %t", scenario.expected, scenario.provider.IsValid())
+			}
+		})
+	}
+}
+
+func TestAlertProvider_buildRequestBody(t *testing.T) {
+	firstDescription := "description-1"
+	secondDescription := "description-2"
+	scenarios := []struct {
+		Name         string
+		Provider     AlertProvider
+		Alert        alert.Alert
+		Resolved     bool
+		ExpectedBody string
+	}{
+		{
+			Name:         "triggered",
+			Provider:     AlertProvider{URL: "https://ntfy.sh", Topic: "example", Priority: 1},
+			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:     false,
+			ExpectedBody: "{\"topic\":\"example\",\"title\":\"Gatus\",\"message\":\"endpoint-name - description-1\",\"tags\":[\"x\"],\"priority\":1}",
+		},
+		{
+			Name:         "resolved",
+			Provider:     AlertProvider{URL: "https://ntfy.sh", Topic: "example", Priority: 2},
+			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
+			Resolved:     true,
+			ExpectedBody: "{\"topic\":\"example\",\"title\":\"Gatus\",\"message\":\"endpoint-name - description-2\",\"tags\":[\"white_check_mark\"],\"priority\":2}",
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			body := scenario.Provider.buildRequestBody(
+				&core.Endpoint{Name: "endpoint-name"},
+				&scenario.Alert,
+				&core.Result{
+					ConditionResults: []*core.ConditionResult{
+						{Condition: "[CONNECTED] == true", Success: scenario.Resolved},
+						{Condition: "[STATUS] == 200", Success: scenario.Resolved},
+					},
+				},
+				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 {
+				t.Error("expected body to be valid JSON, got error:", err.Error())
+			}
+		})
+	}
+}

alerting/provider/opsgenie/opsgenie.go

@@ -83,37 +83,36 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 
 func (provider *AlertProvider) createAlert(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) error {
 	payload := provider.buildCreateRequestBody(endpoint, alert, result, resolved)
-	_, err := provider.sendRequest(restAPI, http.MethodPost, payload)
-	return err
+	return provider.sendRequest(restAPI, http.MethodPost, payload)
 }
 
 func (provider *AlertProvider) closeAlert(endpoint *core.Endpoint, alert *alert.Alert) error {
 	payload := provider.buildCloseRequestBody(endpoint, alert)
 	url := restAPI + "/" + provider.alias(buildKey(endpoint)) + "/close?identifierType=alias"
-	_, err := provider.sendRequest(url, http.MethodPost, payload)
-	return err
+	return provider.sendRequest(url, http.MethodPost, payload)
 }
 
-func (provider *AlertProvider) sendRequest(url, method string, payload interface{}) (*http.Response, error) {
+func (provider *AlertProvider) sendRequest(url, method string, payload interface{}) error {
 	body, err := json.Marshal(payload)
 	if err != nil {
-		return nil, fmt.Errorf("fail to build alert payload: %v", payload)
+		return fmt.Errorf("error build alert with payload %v: %w", payload, err)
 	}
 	request, err := http.NewRequest(method, url, bytes.NewBuffer(body))
 	if err != nil {
-		return nil, err
+		return err
 	}
 	request.Header.Set("Content-Type", "application/json")
 	request.Header.Set("Authorization", "GenieKey "+provider.APIKey)
-	res, err := client.GetHTTPClient(nil).Do(request)
+	response, err := client.GetHTTPClient(nil).Do(request)
 	if err != nil {
-		return nil, err
+		return err
 	}
-	if res.StatusCode > 399 {
-		rBody, _ := io.ReadAll(res.Body)
-		return nil, fmt.Errorf("call to provider alert returned status code %d: %s", res.StatusCode, string(rBody))
+	defer response.Body.Close()
+	if response.StatusCode > 399 {
+		rBody, _ := io.ReadAll(response.Body)
+		return fmt.Errorf("call to provider alert returned status code %d: %s", response.StatusCode, string(rBody))
 	}
-	return res, nil
+	return nil
 }
 
 func (provider *AlertProvider) buildCreateRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) alertCreateRequest {

alerting/provider/pagerduty/pagerduty.go

@@ -53,7 +53,7 @@ func (provider *AlertProvider) IsValid() bool {
 //
 // Relevant: https://developer.pagerduty.com/docs/events-api-v2/trigger-events/
 func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) error {
-	buffer := bytes.NewBuffer([]byte(provider.buildRequestBody(endpoint, alert, result, resolved)))
+	buffer := bytes.NewBuffer(provider.buildRequestBody(endpoint, alert, result, resolved))
 	request, err := http.NewRequest(http.MethodPost, restAPIURL, buffer)
 	if err != nil {
 		return err
@@ -63,6 +63,7 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 	if err != nil {
 		return err
 	}
+	defer response.Body.Close()
 	if response.StatusCode > 399 {
 		body, _ := io.ReadAll(response.Body)
 		return fmt.Errorf("call to provider alert returned status code %d: %s", response.StatusCode, string(body))
@@ -86,8 +87,21 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 	return nil
 }
 
+type Body struct {
+	RoutingKey  string  `json:"routing_key"`
+	DedupKey    string  `json:"dedup_key"`
+	EventAction string  `json:"event_action"`
+	Payload     Payload `json:"payload"`
+}
+
+type Payload struct {
+	Summary  string `json:"summary"`
+	Source   string `json:"source"`
+	Severity string `json:"severity"`
+}
+
 // buildRequestBody builds the request body for the provider
-func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) string {
+func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) []byte {
 	var message, eventAction, resolveKey string
 	if resolved {
 		message = fmt.Sprintf("RESOLVED: %s - %s", endpoint.DisplayName(), alert.GetDescription())
@@ -98,16 +112,17 @@ func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *
 		eventAction = "trigger"
 		resolveKey = ""
 	}
-	return fmt.Sprintf(`{
-  "routing_key": "%s",
-  "dedup_key": "%s",
-  "event_action": "%s",
-  "payload": {
-    "summary": "%s",
-    "source": "%s",
-    "severity": "critical"
-  }
-}`, provider.getIntegrationKeyForGroup(endpoint.Group), resolveKey, eventAction, message, endpoint.Name)
+	body, _ := json.Marshal(Body{
+		RoutingKey:  provider.getIntegrationKeyForGroup(endpoint.Group),
+		DedupKey:    resolveKey,
+		EventAction: eventAction,
+		Payload: Payload{
+			Summary:  message,
+			Source:   "Gatus",
+			Severity: "critical",
+		},
+	})
+	return body
 }
 
 // getIntegrationKeyForGroup returns the appropriate pagerduty integration key for a given group

alerting/provider/pagerduty/pagerduty_test.go

@@ -149,24 +149,24 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 			Provider:     AlertProvider{IntegrationKey: "00000000000000000000000000000000"},
 			Alert:        alert.Alert{Description: &description},
 			Resolved:     false,
-			ExpectedBody: "{\n  \"routing_key\": \"00000000000000000000000000000000\",\n  \"dedup_key\": \"\",\n  \"event_action\": \"trigger\",\n  \"payload\": {\n    \"summary\": \"TRIGGERED:  - test\",\n    \"source\": \"\",\n    \"severity\": \"critical\"\n  }\n}",
+			ExpectedBody: "{\"routing_key\":\"00000000000000000000000000000000\",\"dedup_key\":\"\",\"event_action\":\"trigger\",\"payload\":{\"summary\":\"TRIGGERED: endpoint-name - test\",\"source\":\"Gatus\",\"severity\":\"critical\"}}",
 		},
 		{
 			Name:         "resolved",
 			Provider:     AlertProvider{IntegrationKey: "00000000000000000000000000000000"},
 			Alert:        alert.Alert{Description: &description, ResolveKey: "key"},
 			Resolved:     true,
-			ExpectedBody: "{\n  \"routing_key\": \"00000000000000000000000000000000\",\n  \"dedup_key\": \"key\",\n  \"event_action\": \"resolve\",\n  \"payload\": {\n    \"summary\": \"RESOLVED:  - test\",\n    \"source\": \"\",\n    \"severity\": \"critical\"\n  }\n}",
+			ExpectedBody: "{\"routing_key\":\"00000000000000000000000000000000\",\"dedup_key\":\"key\",\"event_action\":\"resolve\",\"payload\":{\"summary\":\"RESOLVED: endpoint-name - test\",\"source\":\"Gatus\",\"severity\":\"critical\"}}",
 		},
 	}
 	for _, scenario := range scenarios {
 		t.Run(scenario.Name, func(t *testing.T) {
-			body := scenario.Provider.buildRequestBody(&core.Endpoint{}, &scenario.Alert, &core.Result{}, scenario.Resolved)
-			if body != scenario.ExpectedBody {
-				t.Errorf("expected %s, got %s", scenario.ExpectedBody, body)
+			body := scenario.Provider.buildRequestBody(&core.Endpoint{Name: "endpoint-name"}, &scenario.Alert, &core.Result{}, 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([]byte(body), &out); err != nil {
+			if err := json.Unmarshal(body, &out); err != nil {
 				t.Error("expected body to be valid JSON, got error:", err.Error())
 			}
 		})

alerting/provider/provider.go

@@ -9,6 +9,7 @@ import (
 	"github.com/TwiN/gatus/v4/alerting/provider/matrix"
 	"github.com/TwiN/gatus/v4/alerting/provider/mattermost"
 	"github.com/TwiN/gatus/v4/alerting/provider/messagebird"
+	"github.com/TwiN/gatus/v4/alerting/provider/ntfy"
 	"github.com/TwiN/gatus/v4/alerting/provider/opsgenie"
 	"github.com/TwiN/gatus/v4/alerting/provider/pagerduty"
 	"github.com/TwiN/gatus/v4/alerting/provider/slack"
@@ -61,6 +62,7 @@ var (
 	_ AlertProvider = (*matrix.AlertProvider)(nil)
 	_ AlertProvider = (*mattermost.AlertProvider)(nil)
 	_ AlertProvider = (*messagebird.AlertProvider)(nil)
+	_ AlertProvider = (*ntfy.AlertProvider)(nil)
 	_ AlertProvider = (*opsgenie.AlertProvider)(nil)
 	_ AlertProvider = (*pagerduty.AlertProvider)(nil)
 	_ AlertProvider = (*slack.AlertProvider)(nil)

alerting/provider/slack/slack.go

@@ -2,6 +2,7 @@ package slack
 
 import (
 	"bytes"
+	"encoding/json"
 	"fmt"
 	"io"
 	"net/http"
@@ -42,7 +43,7 @@ func (provider *AlertProvider) IsValid() bool {
 
 // Send an alert using the provider
 func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) error {
-	buffer := bytes.NewBuffer([]byte(provider.buildRequestBody(endpoint, alert, result, resolved)))
+	buffer := bytes.NewBuffer(provider.buildRequestBody(endpoint, alert, result, resolved))
 	request, err := http.NewRequest(http.MethodPost, provider.getWebhookURLForGroup(endpoint.Group), buffer)
 	if err != nil {
 		return err
@@ -52,6 +53,7 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 	if err != nil {
 		return err
 	}
+	defer response.Body.Close()
 	if response.StatusCode > 399 {
 		body, _ := io.ReadAll(response.Body)
 		return fmt.Errorf("call to provider alert returned status code %d: %s", response.StatusCode, string(body))
@@ -59,8 +61,27 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 	return err
 }
 
+type Body struct {
+	Text        string       `json:"text"`
+	Attachments []Attachment `json:"attachments"`
+}
+
+type Attachment struct {
+	Title  string  `json:"title"`
+	Text   string  `json:"text"`
+	Short  bool    `json:"short"`
+	Color  string  `json:"color"`
+	Fields []Field `json:"fields"`
+}
+
+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(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) string {
+func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) []byte {
 	var message, color, results string
 	if resolved {
 		message = fmt.Sprintf("An alert for *%s* has been resolved after passing successfully %d time(s) in a row", endpoint.DisplayName(), alert.SuccessThreshold)
@@ -76,30 +97,31 @@ func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *
 		} else {
 			prefix = ":x:"
 		}
-		results += fmt.Sprintf("%s - `%s`\\n", prefix, conditionResult.Condition)
+		results += fmt.Sprintf("%s - `%s`\n", prefix, conditionResult.Condition)
 	}
 	var description string
 	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
-		description = ":\\n> " + alertDescription
+		description = ":\n> " + alertDescription
 	}
-	return fmt.Sprintf(`{
-  "text": "",
-  "attachments": [
-    {
-      "title": ":helmet_with_white_cross: Gatus",
-      "text": "%s%s",
-      "short": false,
-      "color": "%s",
-      "fields": [
-        {
-          "title": "Condition results",
-          "value": "%s",
-          "short": false
-        }
-      ]
-    }
-  ]
-}`, message, description, color, results)
+	body, _ := json.Marshal(Body{
+		Text: "",
+		Attachments: []Attachment{
+			{
+				Title: ":helmet_with_white_cross: Gatus",
+				Text:  message + description,
+				Short: false,
+				Color: color,
+				Fields: []Field{
+					{
+						Title: "Condition results",
+						Value: results,
+						Short: false,
+					},
+				},
+			},
+		},
+	})
+	return body
 }
 
 // getWebhookURLForGroup returns the appropriate Webhook URL integration to for a given group

alerting/provider/slack/slack_test.go

@@ -20,8 +20,8 @@ func TestAlertDefaultProvider_IsValid(t *testing.T) {
 	if !validProvider.IsValid() {
 		t.Error("provider should've been valid")
 	}
-
 }
+
 func TestAlertProvider_IsValidWithOverride(t *testing.T) {
 	providerWithInvalidOverrideGroup := AlertProvider{
 		Overrides: []Override{
@@ -58,6 +58,7 @@ func TestAlertProvider_IsValidWithOverride(t *testing.T) {
 		t.Error("provider should've been valid")
 	}
 }
+
 func TestAlertProvider_Send(t *testing.T) {
 	defer client.InjectHTTPClient(nil)
 	firstDescription := "description-1"
@@ -152,7 +153,7 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 			Endpoint:     core.Endpoint{Name: "name"},
 			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     false,
-			ExpectedBody: "{\n  \"text\": \"\",\n  \"attachments\": [\n    {\n      \"title\": \":helmet_with_white_cross: Gatus\",\n      \"text\": \"An alert for *name* has been triggered due to having failed 3 time(s) in a row:\\n> description-1\",\n      \"short\": false,\n      \"color\": \"#DD0000\",\n      \"fields\": [\n        {\n          \"title\": \"Condition results\",\n          \"value\": \":x: - `[CONNECTED] == true`\\n:x: - `[STATUS] == 200`\\n\",\n          \"short\": false\n        }\n      ]\n    }\n  ]\n}",
+			ExpectedBody: "{\"text\":\"\",\"attachments\":[{\"title\":\":helmet_with_white_cross: Gatus\",\"text\":\"An alert for *name* has been triggered due to having failed 3 time(s) in a row:\\n\\u003e description-1\",\"short\":false,\"color\":\"#DD0000\",\"fields\":[{\"title\":\"Condition results\",\"value\":\":x: - `[CONNECTED] == true`\\n:x: - `[STATUS] == 200`\\n\",\"short\":false}]}]}",
 		},
 		{
 			Name:         "triggered-with-group",
@@ -160,7 +161,7 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 			Endpoint:     core.Endpoint{Name: "name", Group: "group"},
 			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     false,
-			ExpectedBody: "{\n  \"text\": \"\",\n  \"attachments\": [\n    {\n      \"title\": \":helmet_with_white_cross: Gatus\",\n      \"text\": \"An alert for *group/name* has been triggered due to having failed 3 time(s) in a row:\\n> description-1\",\n      \"short\": false,\n      \"color\": \"#DD0000\",\n      \"fields\": [\n        {\n          \"title\": \"Condition results\",\n          \"value\": \":x: - `[CONNECTED] == true`\\n:x: - `[STATUS] == 200`\\n\",\n          \"short\": false\n        }\n      ]\n    }\n  ]\n}",
+			ExpectedBody: "{\"text\":\"\",\"attachments\":[{\"title\":\":helmet_with_white_cross: Gatus\",\"text\":\"An alert for *group/name* has been triggered due to having failed 3 time(s) in a row:\\n\\u003e description-1\",\"short\":false,\"color\":\"#DD0000\",\"fields\":[{\"title\":\"Condition results\",\"value\":\":x: - `[CONNECTED] == true`\\n:x: - `[STATUS] == 200`\\n\",\"short\":false}]}]}",
 		},
 		{
 			Name:         "resolved",
@@ -168,7 +169,7 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 			Endpoint:     core.Endpoint{Name: "name"},
 			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     true,
-			ExpectedBody: "{\n  \"text\": \"\",\n  \"attachments\": [\n    {\n      \"title\": \":helmet_with_white_cross: Gatus\",\n      \"text\": \"An alert for *name* has been resolved after passing successfully 5 time(s) in a row:\\n> description-2\",\n      \"short\": false,\n      \"color\": \"#36A64F\",\n      \"fields\": [\n        {\n          \"title\": \"Condition results\",\n          \"value\": \":white_check_mark: - `[CONNECTED] == true`\\n:white_check_mark: - `[STATUS] == 200`\\n\",\n          \"short\": false\n        }\n      ]\n    }\n  ]\n}",
+			ExpectedBody: "{\"text\":\"\",\"attachments\":[{\"title\":\":helmet_with_white_cross: Gatus\",\"text\":\"An alert for *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",
@@ -176,7 +177,7 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 			Endpoint:     core.Endpoint{Name: "name", Group: "group"},
 			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     true,
-			ExpectedBody: "{\n  \"text\": \"\",\n  \"attachments\": [\n    {\n      \"title\": \":helmet_with_white_cross: Gatus\",\n      \"text\": \"An alert for *group/name* has been resolved after passing successfully 5 time(s) in a row:\\n> description-2\",\n      \"short\": false,\n      \"color\": \"#36A64F\",\n      \"fields\": [\n        {\n          \"title\": \"Condition results\",\n          \"value\": \":white_check_mark: - `[CONNECTED] == true`\\n:white_check_mark: - `[STATUS] == 200`\\n\",\n          \"short\": false\n        }\n      ]\n    }\n  ]\n}",
+			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}]}]}",
 		},
 	}
 	for _, scenario := range scenarios {
@@ -192,11 +193,11 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 				},
 				scenario.Resolved,
 			)
-			if body != scenario.ExpectedBody {
-				t.Errorf("expected %s, got %s", scenario.ExpectedBody, body)
+			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([]byte(body), &out); err != nil {
+			if err := json.Unmarshal(body, &out); err != nil {
 				t.Error("expected body to be valid JSON, got error:", err.Error())
 			}
 		})

alerting/provider/teams/teams.go

@@ -2,6 +2,7 @@ package teams
 
 import (
 	"bytes"
+	"encoding/json"
 	"fmt"
 	"io"
 	"net/http"
@@ -44,7 +45,7 @@ func (provider *AlertProvider) IsValid() bool {
 
 // Send an alert using the provider
 func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) error {
-	buffer := bytes.NewBuffer([]byte(provider.buildRequestBody(endpoint, alert, result, resolved)))
+	buffer := bytes.NewBuffer(provider.buildRequestBody(endpoint, alert, result, resolved))
 	request, err := http.NewRequest(http.MethodPost, provider.getWebhookURLForGroup(endpoint.Group), buffer)
 	if err != nil {
 		return err
@@ -54,6 +55,7 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 	if err != nil {
 		return err
 	}
+	defer response.Body.Close()
 	if response.StatusCode > 399 {
 		body, _ := io.ReadAll(response.Body)
 		return fmt.Errorf("call to provider alert returned status code %d: %s", response.StatusCode, string(body))
@@ -61,8 +63,22 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 	return err
 }
 
+type Body struct {
+	Type       string    `json:"@type"`
+	Context    string    `json:"@context"`
+	ThemeColor string    `json:"themeColor"`
+	Title      string    `json:"title"`
+	Text       string    `json:"text"`
+	Sections   []Section `json:"sections"`
+}
+
+type Section struct {
+	ActivityTitle string `json:"activityTitle"`
+	Text          string `json:"text"`
+}
+
 // buildRequestBody builds the request body for the provider
-func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) string {
+func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.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", endpoint.DisplayName(), alert.SuccessThreshold)
@@ -83,25 +99,22 @@ func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *
 	}
 	var description string
 	if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
-		description = ":\\n> " + alertDescription
+		description = ": " + alertDescription
 	}
-	return fmt.Sprintf(`{
-  "@type": "MessageCard",
-  "@context": "http://schema.org/extensions",
-  "themeColor": "%s",
-  "title": "🚨 Gatus",
-  "text": "%s%s",
-  "sections": [
-    {
-      "activityTitle": "URL",
-      "text": "%s"
-    },
-    {
-      "activityTitle": "Condition results",
-      "text": "%s"
-    }
-  ]
-}`, color, message, description, endpoint.URL, results)
+	body, _ := json.Marshal(Body{
+		Type:       "MessageCard",
+		Context:    "http://schema.org/extensions",
+		ThemeColor: color,
+		Title:      "🚨 Gatus",
+		Text:       message + description,
+		Sections: []Section{
+			{
+				ActivityTitle: "Condition results",
+				Text:          results,
+			},
+		},
+	})
+	return body
 }
 
 // getWebhookURLForGroup returns the appropriate Webhook URL integration to for a given group

alerting/provider/teams/teams_test.go

@@ -151,14 +151,14 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 			Provider:     AlertProvider{},
 			Alert:        alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     false,
-			ExpectedBody: "{\n  \"@type\": \"MessageCard\",\n  \"@context\": \"http://schema.org/extensions\",\n  \"themeColor\": \"#DD0000\",\n  \"title\": \"&#x1F6A8; Gatus\",\n  \"text\": \"An alert for *endpoint-name* has been triggered due to having failed 3 time(s) in a row:\\n> description-1\",\n  \"sections\": [\n    {\n      \"activityTitle\": \"URL\",\n      \"text\": \"\"\n    },\n    {\n      \"activityTitle\": \"Condition results\",\n      \"text\": \"&#x274C; - `[CONNECTED] == true`<br/>&#x274C; - `[STATUS] == 200`<br/>\"\n    }\n  ]\n}",
+			ExpectedBody: "{\"@type\":\"MessageCard\",\"@context\":\"http://schema.org/extensions\",\"themeColor\":\"#DD0000\",\"title\":\"\\u0026#x1F6A8; Gatus\",\"text\":\"An alert for *endpoint-name* has been triggered due to having failed 3 time(s) in a row: description-1\",\"sections\":[{\"activityTitle\":\"Condition results\",\"text\":\"\\u0026#x274C; - `[CONNECTED] == true`\\u003cbr/\\u003e\\u0026#x274C; - `[STATUS] == 200`\\u003cbr/\\u003e\"}]}",
 		},
 		{
 			Name:         "resolved",
 			Provider:     AlertProvider{},
 			Alert:        alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
 			Resolved:     true,
-			ExpectedBody: "{\n  \"@type\": \"MessageCard\",\n  \"@context\": \"http://schema.org/extensions\",\n  \"themeColor\": \"#36A64F\",\n  \"title\": \"&#x1F6A8; Gatus\",\n  \"text\": \"An alert for *endpoint-name* has been resolved after passing successfully 5 time(s) in a row:\\n> description-2\",\n  \"sections\": [\n    {\n      \"activityTitle\": \"URL\",\n      \"text\": \"\"\n    },\n    {\n      \"activityTitle\": \"Condition results\",\n      \"text\": \"&#x2705; - `[CONNECTED] == true`<br/>&#x2705; - `[STATUS] == 200`<br/>\"\n    }\n  ]\n}",
+			ExpectedBody: "{\"@type\":\"MessageCard\",\"@context\":\"http://schema.org/extensions\",\"themeColor\":\"#36A64F\",\"title\":\"\\u0026#x1F6A8; Gatus\",\"text\":\"An alert for *endpoint-name* has been resolved after passing successfully 5 time(s) in a row: description-2\",\"sections\":[{\"activityTitle\":\"Condition results\",\"text\":\"\\u0026#x2705; - `[CONNECTED] == true`\\u003cbr/\\u003e\\u0026#x2705; - `[STATUS] == 200`\\u003cbr/\\u003e\"}]}",
 		},
 	}
 	for _, scenario := range scenarios {
@@ -174,11 +174,11 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 				},
 				scenario.Resolved,
 			)
-			if body != scenario.ExpectedBody {
-				t.Errorf("expected %s, got %s", scenario.ExpectedBody, body)
+			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([]byte(body), &out); err != nil {
+			if err := json.Unmarshal(body, &out); err != nil {
 				t.Error("expected body to be valid JSON, got error:", err.Error())
 			}
 		})

alerting/provider/telegram/telegram.go

@@ -2,6 +2,7 @@ package telegram
 
 import (
 	"bytes"
+	"encoding/json"
 	"fmt"
 	"io"
 	"net/http"
@@ -19,18 +20,24 @@ type AlertProvider struct {
 	ID     string `yaml:"id"`
 	APIURL string `yaml:"api-url"`
 
+	// ClientConfig is the configuration of the client used to communicate with the provider's target
+	ClientConfig *client.Config `yaml:"client,omitempty"`
+
 	// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
 	DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
 }
 
 // IsValid returns whether the provider's configuration is valid
 func (provider *AlertProvider) IsValid() bool {
+	if provider.ClientConfig == nil {
+		provider.ClientConfig = client.GetDefaultConfig()
+	}
 	return len(provider.Token) > 0 && len(provider.ID) > 0
 }
 
 // Send an alert using the provider
 func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) error {
-	buffer := bytes.NewBuffer([]byte(provider.buildRequestBody(endpoint, alert, result, resolved)))
+	buffer := bytes.NewBuffer(provider.buildRequestBody(endpoint, alert, result, resolved))
 	apiURL := provider.APIURL
 	if apiURL == "" {
 		apiURL = defaultAPIURL
@@ -40,10 +47,11 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 		return err
 	}
 	request.Header.Set("Content-Type", "application/json")
-	response, err := client.GetHTTPClient(nil).Do(request)
+	response, err := client.GetHTTPClient(provider.ClientConfig).Do(request)
 	if err != nil {
 		return err
 	}
+	defer response.Body.Close()
 	if response.StatusCode > 399 {
 		body, _ := io.ReadAll(response.Body)
 		return fmt.Errorf("call to provider alert returned status code %d: %s", response.StatusCode, string(body))
@@ -51,13 +59,19 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 	return err
 }
 
+type Body struct {
+	ChatID    string `json:"chat_id"`
+	Text      string `json:"text"`
+	ParseMode string `json:"parse_mode"`
+}
+
 // buildRequestBody builds the request body for the provider
-func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) string {
+func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) []byte {
 	var message, results string
 	if resolved {
-		message = fmt.Sprintf("An alert for *%s* has been resolved:\\n—\\n    _healthcheck passing successfully %d time(s) in a row_\\n—  ", endpoint.DisplayName(), alert.FailureThreshold)
+		message = fmt.Sprintf("An alert for *%s* has been resolved:\n—\n    _healthcheck passing successfully %d time(s) in a row_\n—  ", endpoint.DisplayName(), alert.FailureThreshold)
 	} else {
-		message = fmt.Sprintf("An alert for *%s* has been triggered:\\n—\\n    _healthcheck failed %d time(s) in a row_\\n—  ", endpoint.DisplayName(), alert.FailureThreshold)
+		message = fmt.Sprintf("An alert for *%s* has been triggered:\n—\n    _healthcheck failed %d time(s) in a row_\n—  ", endpoint.DisplayName(), alert.FailureThreshold)
 	}
 	for _, conditionResult := range result.ConditionResults {
 		var prefix string
@@ -66,15 +80,20 @@ func (provider *AlertProvider) buildRequestBody(endpoint *core.Endpoint, alert *
 		} else {
 			prefix = "❌"
 		}
-		results += fmt.Sprintf("%s - `%s`\\n", prefix, conditionResult.Condition)
+		results += fmt.Sprintf("%s - `%s`\n", prefix, conditionResult.Condition)
 	}
 	var text string
 	if len(alert.GetDescription()) > 0 {
-		text = fmt.Sprintf("⛑ *Gatus* \\n%s \\n*Description* \\n_%s_  \\n\\n*Condition results*\\n%s", message, alert.GetDescription(), results)
+		text = fmt.Sprintf("⛑ *Gatus* \n%s \n*Description* \n_%s_  \n\n*Condition results*\n%s", message, alert.GetDescription(), results)
 	} else {
-		text = fmt.Sprintf("⛑ *Gatus* \\n%s \\n*Condition results*\\n%s", message, results)
+		text = fmt.Sprintf("⛑ *Gatus* \n%s \n*Condition results*\n%s", message, results)
 	}
-	return fmt.Sprintf(`{"chat_id": "%s", "text": "%s", "parse_mode": "MARKDOWN"}`, provider.ID, text)
+	body, _ := json.Marshal(Body{
+		ChatID:    provider.ID,
+		Text:      text,
+		ParseMode: "MARKDOWN",
+	})
+	return body
 }
 
 // GetDefaultAlert returns the provider's default alert configuration

alerting/provider/telegram/telegram_test.go

@@ -12,14 +12,24 @@ import (
 )
 
 func TestAlertProvider_IsValid(t *testing.T) {
-	invalidProvider := AlertProvider{Token: "", ID: ""}
-	if invalidProvider.IsValid() {
-		t.Error("provider shouldn't have been valid")
-	}
-	validProvider := AlertProvider{Token: "123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11", ID: "12345678"}
-	if !validProvider.IsValid() {
-		t.Error("provider should've been valid")
-	}
+	t.Run("invalid-provider", func(t *testing.T) {
+		invalidProvider := AlertProvider{Token: "", ID: ""}
+		if invalidProvider.IsValid() {
+			t.Error("provider shouldn't have been valid")
+		}
+	})
+	t.Run("valid-provider", func(t *testing.T) {
+		validProvider := AlertProvider{Token: "123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11", ID: "12345678"}
+		if validProvider.ClientConfig != nil {
+			t.Error("provider client config should have been nil prior to IsValid() being executed")
+		}
+		if !validProvider.IsValid() {
+			t.Error("provider should've been valid")
+		}
+		if validProvider.ClientConfig == nil {
+			t.Error("provider client config should have been set after IsValid() was executed")
+		}
+	})
 }
 
 func TestAlertProvider_Send(t *testing.T) {
@@ -114,14 +124,14 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 			Provider:     AlertProvider{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* \\n_description-1_  \\n\\n*Condition results*\\n❌ - `[CONNECTED] == true`\\n❌ - `[STATUS] == 200`\\n\",\"parse_mode\":\"MARKDOWN\"}",
 		},
 		{
 			Name:         "resolved",
 			Provider:     AlertProvider{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 3 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 3 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\"}",
 		},
 	}
 	for _, scenario := range scenarios {
@@ -137,11 +147,11 @@ func TestAlertProvider_buildRequestBody(t *testing.T) {
 				},
 				scenario.Resolved,
 			)
-			if body != scenario.ExpectedBody {
-				t.Errorf("expected %s, got %s", scenario.ExpectedBody, body)
+			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([]byte(body), &out); err != nil {
+			if err := json.Unmarshal(body, &out); err != nil {
 				t.Error("expected body to be valid JSON, got error:", err.Error())
 			}
 		})

alerting/provider/twilio/twilio.go

@@ -42,6 +42,7 @@ func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert,
 	if err != nil {
 		return err
 	}
+	defer response.Body.Close()
 	if response.StatusCode > 399 {
 		body, _ := io.ReadAll(response.Body)
 		return fmt.Errorf("call to provider alert returned status code %d: %s", response.StatusCode, string(body))

client/client.go

@@ -4,6 +4,7 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"errors"
+	"fmt"
 	"net"
 	"net/http"
 	"net/smtp"
@@ -11,11 +12,19 @@ import (
 	"strings"
 	"time"
 
+	"github.com/TwiN/gocache/v2"
+	"github.com/TwiN/whois"
 	"github.com/go-ping/ping"
+	"github.com/ishidawataru/sctp"
 )
 
-// injectedHTTPClient is used for testing purposes
-var injectedHTTPClient *http.Client
+var (
+	// injectedHTTPClient is used for testing purposes
+	injectedHTTPClient *http.Client
+
+	whoisClient              = whois.NewClient().WithReferralCache(true)
+	whoisExpirationDateCache = gocache.NewCache().WithMaxSize(10000).WithDefaultTTL(24 * time.Hour)
+)
 
 // GetHTTPClient returns the shared HTTP client, or the client from the configuration passed
 func GetHTTPClient(config *Config) *http.Client {
@@ -28,6 +37,35 @@ func GetHTTPClient(config *Config) *http.Client {
 	return config.getHTTPClient()
 }
 
+// GetDomainExpiration retrieves the duration until the domain provided expires
+func GetDomainExpiration(hostname string) (domainExpiration time.Duration, err error) {
+	var retrievedCachedValue bool
+	if v, exists := whoisExpirationDateCache.Get(hostname); exists {
+		domainExpiration = time.Until(v.(time.Time))
+		retrievedCachedValue = true
+		// If the domain OR the TTL is not going to expire in less than 24 hours
+		// we don't have to refresh the cache. Otherwise, we'll refresh it.
+		cacheEntryTTL, _ := whoisExpirationDateCache.TTL(hostname)
+		if cacheEntryTTL > 24*time.Hour && domainExpiration > 24*time.Hour {
+			// No need to refresh, so we'll just return the cached values
+			return domainExpiration, nil
+		}
+	}
+	if whoisResponse, err := whoisClient.QueryAndParse(hostname); err != nil {
+		if !retrievedCachedValue { // Add an error unless we already retrieved a cached value
+			return 0, fmt.Errorf("error querying and parsing hostname using whois client: %w", err)
+		}
+	} else {
+		domainExpiration = time.Until(whoisResponse.ExpirationDate)
+		if domainExpiration > 720*time.Hour {
+			whoisExpirationDateCache.SetWithTTL(hostname, whoisResponse.ExpirationDate, 240*time.Hour)
+		} else {
+			whoisExpirationDateCache.SetWithTTL(hostname, whoisResponse.ExpirationDate, 72*time.Hour)
+		}
+	}
+	return domainExpiration, nil
+}
+
 // CanCreateTCPConnection checks whether a connection can be established with a TCP endpoint
 func CanCreateTCPConnection(address string, config *Config) bool {
 	conn, err := net.DialTimeout("tcp", address, config.Timeout)
@@ -38,6 +76,41 @@ func CanCreateTCPConnection(address string, config *Config) bool {
 	return true
 }
 
+// CanCreateUDPConnection checks whether a connection can be established with a UDP endpoint
+func CanCreateUDPConnection(address string, config *Config) bool {
+	conn, err := net.DialTimeout("udp", address, config.Timeout)
+	if err != nil {
+		return false
+	}
+	_ = conn.Close()
+	return true
+}
+
+// CanCreateSCTPConnection checks whether a connection can be established with a SCTP endpoint
+func CanCreateSCTPConnection(address string, config *Config) bool {
+	ch := make(chan bool)
+	go (func(res chan bool) {
+		addr, err := sctp.ResolveSCTPAddr("sctp", address)
+		if err != nil {
+			res <- false
+		}
+
+		conn, err := sctp.DialSCTP("sctp", nil, addr)
+		if err != nil {
+			res <- false
+		}
+		_ = conn.Close()
+		res <- true
+	})(ch)
+
+	select {
+	case result := <-ch:
+		return result
+	case <-time.After(config.Timeout):
+		return false
+	}
+}
+
 // CanPerformStartTLS checks whether a connection can be established to an address using the STARTTLS protocol
 func CanPerformStartTLS(address string, config *Config) (connected bool, certificate *x509.Certificate, err error) {
 	hostAndPort := strings.Split(address, ":")

client/client_test.go

@@ -35,6 +35,33 @@ func TestGetHTTPClient(t *testing.T) {
 	}
 }
 
+func TestGetDomainExpiration(t *testing.T) {
+	if domainExpiration, err := GetDomainExpiration("example.com"); err != nil {
+		t.Fatalf("expected error to be nil, but got: `%s`", err)
+	} else if domainExpiration <= 0 {
+		t.Error("expected domain expiration to be higher than 0")
+	}
+	if domainExpiration, err := GetDomainExpiration("example.com"); err != nil {
+		t.Errorf("expected error to be nil, but got: `%s`", err)
+	} else if domainExpiration <= 0 {
+		t.Error("expected domain expiration to be higher than 0")
+	}
+	// Hack to pretend like the domain is expiring in 1 hour, which should trigger a refresh
+	whoisExpirationDateCache.SetWithTTL("example.com", time.Now().Add(time.Hour), 25*time.Hour)
+	if domainExpiration, err := GetDomainExpiration("example.com"); err != nil {
+		t.Errorf("expected error to be nil, but got: `%s`", err)
+	} else if domainExpiration <= 0 {
+		t.Error("expected domain expiration to be higher than 0")
+	}
+	// Make sure the refresh works when the ttl is <24 hours
+	whoisExpirationDateCache.SetWithTTL("example.com", time.Now().Add(35*time.Hour), 23*time.Hour)
+	if domainExpiration, err := GetDomainExpiration("example.com"); err != nil {
+		t.Errorf("expected error to be nil, but got: `%s`", err)
+	} else if domainExpiration <= 0 {
+		t.Error("expected domain expiration to be higher than 0")
+	}
+}
+
 func TestPing(t *testing.T) {
 	if success, rtt := Ping("127.0.0.1", &Config{Timeout: 500 * time.Millisecond}); !success {
 		t.Error("expected true")

client/config.go

@@ -49,7 +49,7 @@ type Config struct {
 	Timeout time.Duration `yaml:"timeout"`
 
 	// DNSResolver override for the HTTP client
-	// Expected format is {protocol}://{host}:{port}, e.g. tcp://1.1.1.1:53
+	// Expected format is {protocol}://{host}:{port}, e.g. tcp://8.8.8.8:53
 	DNSResolver string `yaml:"dns-resolver,omitempty"`
 
 	// OAuth2Config is the OAuth2 configuration used for the client.

config.yaml

@@ -31,7 +31,7 @@ endpoints:
       - "[STATUS] == 200"
 
   - name: example-dns-query
-    url: "1.1.1.1" # Address of the DNS server to use
+    url: "8.8.8.8" # Address of the DNS server to use
     interval: 5m
     dns:
       query-name: "example.com"
@@ -45,3 +45,9 @@ endpoints:
     interval: 1m
     conditions:
       - "[CONNECTED] == true"
+
+  - name: check-domain-expiration
+    url: "https://example.org/"
+    interval: 1h
+    conditions:
+      - "[DOMAIN_EXPIRATION] > 720h"

config/config.go

@@ -2,6 +2,7 @@ package config
 
 import (
 	"errors"
+	"fmt"
 	"log"
 	"os"
 	"time"
@@ -267,7 +268,7 @@ func validateEndpointsConfig(config *Config) error {
 			log.Printf("[config][validateEndpointsConfig] Validating endpoint '%s'", endpoint.Name)
 		}
 		if err := endpoint.ValidateAndSetDefaults(); err != nil {
-			return err
+			return fmt.Errorf("invalid endpoint %s: %w", endpoint.DisplayName(), err)
 		}
 	}
 	log.Printf("[config][validateEndpointsConfig] Validated %d endpoints", len(config.Endpoints))
@@ -301,10 +302,12 @@ func validateAlertingConfig(alertingConfig *alerting.Config, endpoints []*core.E
 	alertTypes := []alert.Type{
 		alert.TypeCustom,
 		alert.TypeDiscord,
+		alert.TypeGoogleChat,
 		alert.TypeEmail,
 		alert.TypeMatrix,
 		alert.TypeMattermost,
 		alert.TypeMessagebird,
+		alert.TypeNtfy,
 		alert.TypeOpsgenie,
 		alert.TypePagerDuty,
 		alert.TypeSlack,

config/config_test.go

@@ -17,7 +17,6 @@ import (
 	"github.com/TwiN/gatus/v4/alerting/provider/telegram"
 	"github.com/TwiN/gatus/v4/alerting/provider/twilio"
 	"github.com/TwiN/gatus/v4/client"
-	"github.com/TwiN/gatus/v4/config/ui"
 	"github.com/TwiN/gatus/v4/config/web"
 	"github.com/TwiN/gatus/v4/core"
 	"github.com/TwiN/gatus/v4/storage"
@@ -39,10 +38,6 @@ func TestLoadDefaultConfigurationFile(t *testing.T) {
 
 func TestParseAndValidateConfigBytes(t *testing.T) {
 	file := t.TempDir() + "/test.db"
-	ui.StaticFolder = "../web/static"
-	defer func() {
-		ui.StaticFolder = "./web/static"
-	}()
 	config, err := parseAndValidateConfigBytes([]byte(fmt.Sprintf(`
 storage:
   type: sqlite
@@ -1125,7 +1120,7 @@ endpoints:
     conditions:
       - "[STATUS] == 200"
 `))
-	if err != core.ErrEndpointWithNoName {
+	if err == nil {
 		t.Error("should've returned an error")
 	}
 }

config/remote/remote.go

@@ -33,6 +33,7 @@ func (c *Config) ValidateAndSetDefaults() error {
 	if len(c.Instances) > 0 {
 		log.Println("WARNING: Your configuration is using 'remote', which is in alpha and may be updated/removed in future versions.")
 		log.Println("WARNING: See https://github.com/TwiN/gatus/issues/64 for more information")
+		log.Println("WARNING: This feature is a candidate for removal in future versions. Please comment on the issue above if you need this feature.")
 	}
 	return nil
 }

config/ui/ui.go

@@ -4,30 +4,30 @@ import (
 	"bytes"
 	"errors"
 	"html/template"
+
+	"github.com/TwiN/gatus/v4/web"
 )
 
 const (
-	defaultTitle  = "Health Dashboard | Gatus"
-	defaultHeader = "Health Status"
-	defaultLogo   = ""
-	defaultLink   = ""
+	defaultTitle       = "Health Dashboard | Gatus"
+	defaultDescription = "Gatus is an advanced automated status page that lets you monitor your applications and configure alerts to notify you if there's an issue"
+	defaultHeader      = "Health Status"
+	defaultLogo        = ""
+	defaultLink        = ""
 )
 
 var (
-	// StaticFolder is the path to the location of the static folder from the root path of the project
-	// The only reason this is exposed is to allow running tests from a different path than the root path of the project
-	StaticFolder = "./web/static"
-
 	ErrButtonValidationFailed = errors.New("invalid button configuration: missing required name or link")
 )
 
 // Config is the configuration for the UI of Gatus
 type Config struct {
-	Title   string   `yaml:"title,omitempty"`   // Title of the page
-	Header  string   `yaml:"header,omitempty"`  // Header is the text at the top of the page
-	Logo    string   `yaml:"logo,omitempty"`    // Logo to display on the page
-	Link    string   `yaml:"link,omitempty"`    // Link to open when clicking on the logo
-	Buttons []Button `yaml:"buttons,omitempty"` // Buttons to display below the header
+	Title       string   `yaml:"title,omitempty"`       // Title of the page
+	Description string   `yaml:"description,omitempty"` // Meta description of the page
+	Header      string   `yaml:"header,omitempty"`      // Header is the text at the top of the page
+	Logo        string   `yaml:"logo,omitempty"`        // Logo to display on the page
+	Link        string   `yaml:"link,omitempty"`        // Link to open when clicking on the logo
+	Buttons     []Button `yaml:"buttons,omitempty"`     // Buttons to display below the header
 }
 
 // Button is the configuration for a button on the UI
@@ -47,10 +47,11 @@ func (btn *Button) Validate() error {
 // GetDefaultConfig returns a Config struct with the default values
 func GetDefaultConfig() *Config {
 	return &Config{
-		Title:  defaultTitle,
-		Header: defaultHeader,
-		Logo:   defaultLogo,
-		Link:   defaultLink,
+		Title:       defaultTitle,
+		Description: defaultDescription,
+		Header:      defaultHeader,
+		Logo:        defaultLogo,
+		Link:        defaultLink,
 	}
 }
 
@@ -59,6 +60,9 @@ func (cfg *Config) ValidateAndSetDefaults() error {
 	if len(cfg.Title) == 0 {
 		cfg.Title = defaultTitle
 	}
+	if len(cfg.Description) == 0 {
+		cfg.Description = defaultDescription
+	}
 	if len(cfg.Header) == 0 {
 		cfg.Header = defaultHeader
 	}
@@ -71,7 +75,7 @@ func (cfg *Config) ValidateAndSetDefaults() error {
 		}
 	}
 	// Validate that the template works
-	t, err := template.ParseFiles(StaticFolder + "/index.html")
+	t, err := template.ParseFS(static.FileSystem, static.IndexPath)
 	if err != nil {
 		return err
 	}

config/ui/ui_test.go

@@ -6,15 +6,12 @@ import (
 )
 
 func TestConfig_ValidateAndSetDefaults(t *testing.T) {
-	StaticFolder = "../../web/static"
-	defer func() {
-		StaticFolder = "./web/static"
-	}()
 	cfg := &Config{
-		Title:  "",
-		Header: "",
-		Logo:   "",
-		Link:   "",
+		Title:       "",
+		Description: "",
+		Header:      "",
+		Logo:        "",
+		Link:        "",
 	}
 	if err := cfg.ValidateAndSetDefaults(); err != nil {
 		t.Error("expected no error, got", err.Error())
@@ -22,6 +19,9 @@ func TestConfig_ValidateAndSetDefaults(t *testing.T) {
 	if cfg.Title != defaultTitle {
 		t.Errorf("expected title to be %s, got %s", defaultTitle, cfg.Title)
 	}
+	if cfg.Description != defaultDescription {
+		t.Errorf("expected description to be %s, got %s", defaultDescription, cfg.Description)
+	}
 	if cfg.Header != defaultHeader {
 		t.Errorf("expected header to be %s, got %s", defaultHeader, cfg.Header)
 	}

controller/controller.go

@@ -9,7 +9,6 @@ import (
 	"time"
 
 	"github.com/TwiN/gatus/v4/config"
-	"github.com/TwiN/gatus/v4/config/ui"
 	"github.com/TwiN/gatus/v4/controller/handler"
 )
 
@@ -21,7 +20,7 @@ var (
 
 // Handle creates the router and starts the server
 func Handle(cfg *config.Config) {
-	var router http.Handler = handler.CreateRouter(ui.StaticFolder, cfg)
+	var router http.Handler = handler.CreateRouter(cfg)
 	if os.Getenv("ENVIRONMENT") == "dev" {
 		router = handler.DevelopmentCORS(router)
 	}

controller/handler/badge_test.go

@@ -62,7 +62,7 @@ func TestBadge(t *testing.T) {
 
 	watchdog.UpdateEndpointStatuses(cfg.Endpoints[0], &core.Result{Success: true, Connected: true, Duration: time.Millisecond, Timestamp: time.Now()})
 	watchdog.UpdateEndpointStatuses(cfg.Endpoints[1], &core.Result{Success: false, Connected: false, Duration: time.Second, Timestamp: time.Now()})
-	router := CreateRouter("../../web/static", cfg)
+	router := CreateRouter(cfg)
 	type Scenario struct {
 		Name         string
 		Path         string
@@ -140,6 +140,16 @@ func TestBadge(t *testing.T) {
 			Path:         "/api/v1/endpoints/core_backend/response-times/24h/chart.svg",
 			ExpectedCode: http.StatusOK,
 		},
+		{
+			Name:         "chart-response-time-7d",
+			Path:         "/api/v1/endpoints/core_frontend/response-times/7d/chart.svg",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "chart-response-time-with-invalid-duration",
+			Path:         "/api/v1/endpoints/core_backend/response-times/3d/chart.svg",
+			ExpectedCode: http.StatusBadRequest,
+		},
 	}
 	for _, scenario := range scenarios {
 		t.Run(scenario.Name, func(t *testing.T) {

controller/handler/chart_test.go

@@ -30,7 +30,7 @@ func TestResponseTimeChart(t *testing.T) {
 	}
 	watchdog.UpdateEndpointStatuses(cfg.Endpoints[0], &core.Result{Success: true, Duration: time.Millisecond, Timestamp: time.Now()})
 	watchdog.UpdateEndpointStatuses(cfg.Endpoints[1], &core.Result{Success: false, Duration: time.Second, Timestamp: time.Now()})
-	router := CreateRouter("../../web/static", cfg)
+	router := CreateRouter(cfg)
 	type Scenario struct {
 		Name         string
 		Path         string

controller/handler/endpoint_status_test.go

@@ -97,7 +97,7 @@ func TestEndpointStatus(t *testing.T) {
 	}
 	watchdog.UpdateEndpointStatuses(cfg.Endpoints[0], &core.Result{Success: true, Duration: time.Millisecond, Timestamp: time.Now()})
 	watchdog.UpdateEndpointStatuses(cfg.Endpoints[1], &core.Result{Success: false, Duration: time.Second, Timestamp: time.Now()})
-	router := CreateRouter("../../web/static", cfg)
+	router := CreateRouter(cfg)
 
 	type Scenario struct {
 		Name         string
@@ -153,7 +153,7 @@ func TestEndpointStatuses(t *testing.T) {
 	// Can't be bothered dealing with timezone issues on the worker that runs the automated tests
 	firstResult.Timestamp = time.Time{}
 	secondResult.Timestamp = time.Time{}
-	router := CreateRouter("../../web/static", &config.Config{Metrics: true})
+	router := CreateRouter(&config.Config{Metrics: true})
 
 	type Scenario struct {
 		Name         string

controller/handler/favicon.go

@@ -1,12 +0,0 @@
-package handler
-
-import (
-	"net/http"
-)
-
-// FavIcon handles requests for /favicon.ico
-func FavIcon(staticFolder string) http.HandlerFunc {
-	return func(writer http.ResponseWriter, request *http.Request) {
-		http.ServeFile(writer, request, staticFolder+"/favicon.ico")
-	}
-}

controller/handler/favicon_test.go

@@ -1,35 +0,0 @@
-package handler
-
-import (
-	"net/http"
-	"net/http/httptest"
-	"testing"
-
-	"github.com/TwiN/gatus/v4/config"
-)
-
-func TestFavIcon(t *testing.T) {
-	router := CreateRouter("../../web/static", &config.Config{})
-	type Scenario struct {
-		Name         string
-		Path         string
-		ExpectedCode int
-	}
-	scenarios := []Scenario{
-		{
-			Name:         "favicon",
-			Path:         "/favicon.ico",
-			ExpectedCode: http.StatusOK,
-		},
-	}
-	for _, scenario := range scenarios {
-		t.Run(scenario.Name, func(t *testing.T) {
-			request, _ := http.NewRequest("GET", scenario.Path, http.NoBody)
-			responseRecorder := httptest.NewRecorder()
-			router.ServeHTTP(responseRecorder, request)
-			if responseRecorder.Code != scenario.ExpectedCode {
-				t.Errorf("%s %s should have returned %d, but returned %d instead", request.Method, request.URL, scenario.ExpectedCode, responseRecorder.Code)
-			}
-		})
-	}
-}

controller/handler/handler.go

@@ -1,15 +1,17 @@
 package handler
 
 import (
+	"io/fs"
 	"net/http"
 
 	"github.com/TwiN/gatus/v4/config"
+	"github.com/TwiN/gatus/v4/web"
 	"github.com/TwiN/health"
 	"github.com/gorilla/mux"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
 
-func CreateRouter(staticFolder string, cfg *config.Config) *mux.Router {
+func CreateRouter(cfg *config.Config) *mux.Router {
 	router := mux.NewRouter()
 	if cfg.Metrics {
 		router.Handle("/metrics", promhttp.Handler()).Methods("GET")
@@ -35,11 +37,14 @@ func CreateRouter(staticFolder string, cfg *config.Config) *mux.Router {
 	unprotected.HandleFunc("/v1/endpoints/{key}/response-times/{duration}/chart.svg", ResponseTimeChart).Methods("GET")
 	// Misc
 	router.Handle("/health", health.Handler().WithJSON(true)).Methods("GET")
-	router.HandleFunc("/favicon.ico", FavIcon(staticFolder)).Methods("GET")
 	// SPA
-	router.HandleFunc("/endpoints/{name}", SinglePageApplication(staticFolder, cfg.UI)).Methods("GET")
-	router.HandleFunc("/", SinglePageApplication(staticFolder, cfg.UI)).Methods("GET")
+	router.HandleFunc("/endpoints/{name}", SinglePageApplication(cfg.UI)).Methods("GET")
+	router.HandleFunc("/", SinglePageApplication(cfg.UI)).Methods("GET")
 	// Everything else falls back on static content
-	router.PathPrefix("/").Handler(GzipHandler(http.FileServer(http.Dir(staticFolder))))
+	staticFileSystem, err := fs.Sub(static.FileSystem, static.RootPath)
+	if err != nil {
+		panic(err)
+	}
+	router.PathPrefix("/").Handler(GzipHandler(http.FileServer(http.FS(staticFileSystem))))
 	return router
 }

controller/handler/handler_test.go

@@ -9,7 +9,7 @@ import (
 )
 
 func TestCreateRouter(t *testing.T) {
-	router := CreateRouter("../../web/static", &config.Config{Metrics: true})
+	router := CreateRouter(&config.Config{Metrics: true})
 	type Scenario struct {
 		Name         string
 		Path         string
@@ -28,16 +28,32 @@ func TestCreateRouter(t *testing.T) {
 			ExpectedCode: http.StatusOK,
 		},
 		{
-			Name:         "scripts",
+			Name:         "favicon.ico",
+			Path:         "/favicon.ico",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "app.js",
 			Path:         "/js/app.js",
 			ExpectedCode: http.StatusOK,
 		},
 		{
-			Name:         "scripts-gzipped",
+			Name:         "app.js-gzipped",
 			Path:         "/js/app.js",
 			ExpectedCode: http.StatusOK,
 			Gzip:         true,
 		},
+		{
+			Name:         "chunk-vendors.js",
+			Path:         "/js/chunk-vendors.js",
+			ExpectedCode: http.StatusOK,
+		},
+		{
+			Name:         "chunk-vendors.js-gzipped",
+			Path:         "/js/chunk-vendors.js",
+			ExpectedCode: http.StatusOK,
+			Gzip:         true,
+		},
 		{
 			Name:         "index-redirect",
 			Path:         "/index.html",

controller/handler/spa.go

@@ -1,26 +1,30 @@
 package handler
 
 import (
+	_ "embed"
 	"html/template"
 	"log"
 	"net/http"
 
 	"github.com/TwiN/gatus/v4/config/ui"
+	"github.com/TwiN/gatus/v4/web"
 )
 
-func SinglePageApplication(staticFolder string, ui *ui.Config) http.HandlerFunc {
+func SinglePageApplication(ui *ui.Config) http.HandlerFunc {
 	return func(writer http.ResponseWriter, request *http.Request) {
-		t, err := template.ParseFiles(staticFolder + "/index.html")
+		t, err := template.ParseFS(static.FileSystem, static.IndexPath)
 		if err != nil {
-			log.Println("[handler][SinglePageApplication] Failed to parse template:", err.Error())
-			http.ServeFile(writer, request, staticFolder+"/index.html")
+			// This should never happen, because ui.ValidateAndSetDefaults validates that the template works.
+			log.Println("[handler][SinglePageApplication] Failed to parse template. This should never happen, because the template is validated on start. Error:", err.Error())
+			http.Error(writer, "Failed to parse template. This should never happen, because the template is validated on start.", http.StatusInternalServerError)
 			return
 		}
 		writer.Header().Set("Content-Type", "text/html")
 		err = t.Execute(writer, ui)
 		if err != nil {
-			log.Println("[handler][SinglePageApplication] Failed to parse template:", err.Error())
-			http.ServeFile(writer, request, staticFolder+"/index.html")
+			// This should never happen, because ui.ValidateAndSetDefaults validates that the template works.
+			log.Println("[handler][SinglePageApplication] Failed to execute template. This should never happen, because the template is validated on start. Error:", err.Error())
+			http.Error(writer, "Failed to execute template. This should never happen, because the template is validated on start.", http.StatusInternalServerError)
 			return
 		}
 	}

controller/handler/spa_test.go

@@ -30,7 +30,7 @@ func TestSinglePageApplication(t *testing.T) {
 	}
 	watchdog.UpdateEndpointStatuses(cfg.Endpoints[0], &core.Result{Success: true, Duration: time.Millisecond, Timestamp: time.Now()})
 	watchdog.UpdateEndpointStatuses(cfg.Endpoints[1], &core.Result{Success: false, Duration: time.Second, Timestamp: time.Now()})
-	router := CreateRouter("../../web/static", cfg)
+	router := CreateRouter(cfg)
 	type Scenario struct {
 		Name         string
 		Path         string

core/condition.go

@@ -46,6 +46,9 @@ const (
 	// Values that could replace the placeholder: 4461677039 (~52 days)
 	CertificateExpirationPlaceholder = "[CERTIFICATE_EXPIRATION]"
 
+	// DomainExpirationPlaceholder is a placeholder for the duration before the domain expires, in milliseconds.
+	DomainExpirationPlaceholder = "[DOMAIN_EXPIRATION]"
+
 	// LengthFunctionPrefix is the prefix for the length function
 	//
 	// Usage: len([BODY].articles) == 10, len([BODY].name) > 5
@@ -142,9 +145,21 @@ func (c Condition) hasBodyPlaceholder() bool {
 	return strings.Contains(string(c), BodyPlaceholder)
 }
 
+// hasDomainExpirationPlaceholder checks whether the condition has a DomainExpirationPlaceholder
+// Used for determining whether a whois operation is necessary
+func (c Condition) hasDomainExpirationPlaceholder() bool {
+	return strings.Contains(string(c), DomainExpirationPlaceholder)
+}
+
+// hasIPPlaceholder checks whether the condition has an IPPlaceholder
+// Used for determining whether an IP lookup is necessary
+func (c Condition) hasIPPlaceholder() bool {
+	return strings.Contains(string(c), IPPlaceholder)
+}
+
 // isEqual compares two strings.
 //
-// Supports the pattern and the any functions.
+// Supports the "pat" and the "any" functions.
 // i.e. if one of the parameters starts with PatternFunctionPrefix and ends with FunctionSuffix, it will be treated like
 // a pattern.
 func isEqual(first, second string) bool {
@@ -219,6 +234,8 @@ func sanitizeAndResolve(elements []string, result *Result) ([]string, []string)
 			element = strconv.FormatBool(result.Connected)
 		case CertificateExpirationPlaceholder:
 			element = strconv.FormatInt(result.CertificateExpiration.Milliseconds(), 10)
+		case DomainExpirationPlaceholder:
+			element = strconv.FormatInt(result.DomainExpiration.Milliseconds(), 10)
 		default:
 			// if contains the BodyPlaceholder, then evaluate json path
 			if strings.Contains(element, BodyPlaceholder) {

core/condition_test.go

@@ -155,13 +155,6 @@ func TestCondition_evaluate(t *testing.T) {
 			ExpectedSuccess: false,
 			ExpectedOutput:  "[BODY].data.name (INVALID) == john",
 		},
-		{
-			Name:            "body-jsonpath-complex-len",
-			Condition:       Condition("len([BODY].data.name) == 4"),
-			Result:          &Result{body: []byte("{\"data\": {\"name\": \"john\"}}")},
-			ExpectedSuccess: true,
-			ExpectedOutput:  "len([BODY].data.name) == 4",
-		},
 		{
 			Name:            "body-jsonpath-complex-len-invalid",
 			Condition:       Condition("len([BODY].data.name) == john"),
@@ -232,154 +225,6 @@ func TestCondition_evaluate(t *testing.T) {
 			ExpectedSuccess: false,
 			ExpectedOutput:  "[BODY].data.id (10) < 5",
 		},
-		{
-			Name:            "body-len-array",
-			Condition:       Condition("len([BODY].data) == 3"),
-			Result:          &Result{body: []byte("{\"data\": [{\"id\": 1}, {\"id\": 2}, {\"id\": 3}]}")},
-			ExpectedSuccess: true,
-			ExpectedOutput:  "len([BODY].data) == 3",
-		},
-		{
-			Name:            "body-len-array-invalid",
-			Condition:       Condition("len([BODY].data) == 8"),
-			Result:          &Result{body: []byte("{\"name\": \"john.doe\"}")},
-			ExpectedSuccess: false,
-			ExpectedOutput:  "len([BODY].data) (INVALID) == 8",
-		},
-		{
-			Name:            "body-len-string",
-			Condition:       Condition("len([BODY].name) == 8"),
-			Result:          &Result{body: []byte("{\"name\": \"john.doe\"}")},
-			ExpectedSuccess: true,
-			ExpectedOutput:  "len([BODY].name) == 8",
-		},
-		{
-			Name:            "body-pattern",
-			Condition:       Condition("[BODY] == pat(*john*)"),
-			Result:          &Result{body: []byte("{\"name\": \"john.doe\"}")},
-			ExpectedSuccess: true,
-			ExpectedOutput:  "[BODY] == pat(*john*)",
-		},
-		{
-			Name:            "body-pattern-2",
-			Condition:       Condition("[BODY].name == pat(john*)"),
-			Result:          &Result{body: []byte("{\"name\": \"john.doe\"}")},
-			ExpectedSuccess: true,
-			ExpectedOutput:  "[BODY].name == pat(john*)",
-		},
-		{
-			Name:            "body-pattern-failure",
-			Condition:       Condition("[BODY].name == pat(bob*)"),
-			Result:          &Result{body: []byte("{\"name\": \"john.doe\"}")},
-			ExpectedSuccess: false,
-			ExpectedOutput:  "[BODY].name (john.doe) == pat(bob*)",
-		},
-		{
-			Name:            "body-pattern-html",
-			Condition:       Condition("[BODY] == pat(*<div id=\"user\">john.doe</div>*)"),
-			Result:          &Result{body: []byte(`<!DOCTYPE html><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /></head><body><div id="user">john.doe</div></body></html>`)},
-			ExpectedSuccess: true,
-			ExpectedOutput:  "[BODY] == pat(*<div id=\"user\">john.doe</div>*)",
-		},
-		{
-			Name:            "body-pattern-html-failure",
-			Condition:       Condition("[BODY] == pat(*<div id=\"user\">john.doe</div>*)"),
-			Result:          &Result{body: []byte(`<!DOCTYPE html><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /></head><body><div id="user">jane.doe</div></body></html>`)},
-			ExpectedSuccess: false,
-			ExpectedOutput:  "[BODY] (<!DOCTYPE html><html lang...(truncated)) == pat(*<div id=\"user\">john.doe</div>*)",
-		},
-		{
-			Name:            "body-pattern-html-failure-alt",
-			Condition:       Condition("pat(*<div id=\"user\">john.doe</div>*) == [BODY]"),
-			Result:          &Result{body: []byte(`<!DOCTYPE html><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /></head><body><div id="user">jane.doe</div></body></html>`)},
-			ExpectedSuccess: false,
-			ExpectedOutput:  "pat(*<div id=\"user\">john.doe</div>*) == [BODY] (<!DOCTYPE html><html lang...(truncated))",
-		},
-		{
-			Name:            "ip-pattern",
-			Condition:       Condition("[IP] == pat(10.*)"),
-			Result:          &Result{IP: "10.0.0.0"},
-			ExpectedSuccess: true,
-			ExpectedOutput:  "[IP] == pat(10.*)",
-		},
-		{
-			Name:            "ip-pattern-failure",
-			Condition:       Condition("[IP] == pat(10.*)"),
-			Result:          &Result{IP: "255.255.255.255"},
-			ExpectedSuccess: false,
-			ExpectedOutput:  "[IP] (255.255.255.255) == pat(10.*)",
-		},
-		{
-			Name:            "status-pattern",
-			Condition:       Condition("[STATUS] == pat(4*)"),
-			Result:          &Result{HTTPStatus: 404},
-			ExpectedSuccess: true,
-			ExpectedOutput:  "[STATUS] == pat(4*)",
-		},
-		{
-			Name:            "status-pattern-failure",
-			Condition:       Condition("[STATUS] == pat(4*)"),
-			Result:          &Result{HTTPStatus: 200},
-			ExpectedSuccess: false,
-			ExpectedOutput:  "[STATUS] (200) == pat(4*)",
-		},
-		{
-			Name:            "body-any",
-			Condition:       Condition("[BODY].name == any(john.doe, jane.doe)"),
-			Result:          &Result{body: []byte("{\"name\": \"john.doe\"}")},
-			ExpectedSuccess: true,
-			ExpectedOutput:  "[BODY].name == any(john.doe, jane.doe)",
-		},
-		{
-			Name:            "body-any-2",
-			Condition:       Condition("[BODY].name == any(john.doe, jane.doe)"),
-			Result:          &Result{body: []byte("{\"name\": \"jane.doe\"}")},
-			ExpectedSuccess: true,
-			ExpectedOutput:  "[BODY].name == any(john.doe, jane.doe)",
-		},
-		{
-			Name:            "body-any-failure",
-			Condition:       Condition("[BODY].name == any(john.doe, jane.doe)"),
-			Result:          &Result{body: []byte("{\"name\": \"bob\"}")},
-			ExpectedSuccess: false,
-			ExpectedOutput:  "[BODY].name (bob) == any(john.doe, jane.doe)",
-		},
-		{
-			Name:            "status-any",
-			Condition:       Condition("[STATUS] == any(200, 429)"),
-			Result:          &Result{HTTPStatus: 200},
-			ExpectedSuccess: true,
-			ExpectedOutput:  "[STATUS] == any(200, 429)",
-		},
-		{
-			Name:            "status-any-2",
-			Condition:       Condition("[STATUS] == any(200, 429)"),
-			Result:          &Result{HTTPStatus: 429},
-			ExpectedSuccess: true,
-			ExpectedOutput:  "[STATUS] == any(200, 429)",
-		},
-		{
-			Name:            "status-any-reverse",
-			Condition:       Condition("any(200, 429) == [STATUS]"),
-			Result:          &Result{HTTPStatus: 429},
-			ExpectedSuccess: true,
-			ExpectedOutput:  "any(200, 429) == [STATUS]",
-		},
-		{
-			Name:            "status-any-failure",
-			Condition:       Condition("[STATUS] == any(200, 429)"),
-			Result:          &Result{HTTPStatus: 404},
-			ExpectedSuccess: false,
-			ExpectedOutput:  "[STATUS] (404) == any(200, 429)",
-		},
-		{
-			Name:                        "status-any-failure-but-dont-resolve",
-			Condition:                   Condition("[STATUS] == any(200, 429)"),
-			Result:                      &Result{HTTPStatus: 404},
-			DontResolveFailedConditions: true,
-			ExpectedSuccess:             false,
-			ExpectedOutput:              "[STATUS] == any(200, 429)",
-		},
 		{
 			Name:            "connected",
 			Condition:       Condition("[CONNECTED] == true"),
@@ -429,6 +274,238 @@ func TestCondition_evaluate(t *testing.T) {
 			ExpectedSuccess: false,
 			ExpectedOutput:  "[CERTIFICATE_EXPIRATION] (86400000) > 48h (172800000)",
 		},
+		{
+			Name:            "no-placeholders",
+			Condition:       Condition("1 == 2"),
+			Result:          &Result{},
+			ExpectedSuccess: false,
+			ExpectedOutput:  "1 == 2",
+		},
+		///////////////
+		// Functions //
+		///////////////
+		// len
+		{
+			Name:            "len-body-jsonpath-complex",
+			Condition:       Condition("len([BODY].data.name) == 4"),
+			Result:          &Result{body: []byte("{\"data\": {\"name\": \"john\"}}")},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "len([BODY].data.name) == 4",
+		},
+		{
+			Name:            "len-body-array",
+			Condition:       Condition("len([BODY]) == 3"),
+			Result:          &Result{body: []byte("[{\"id\": 1}, {\"id\": 2}, {\"id\": 3}]")},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "len([BODY]) == 3",
+		},
+		{
+			Name:            "len-body-keyed-array",
+			Condition:       Condition("len([BODY].data) == 3"),
+			Result:          &Result{body: []byte("{\"data\": [{\"id\": 1}, {\"id\": 2}, {\"id\": 3}]}")},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "len([BODY].data) == 3",
+		},
+		{
+			Name:            "len-body-array-invalid",
+			Condition:       Condition("len([BODY].data) == 8"),
+			Result:          &Result{body: []byte("{\"name\": \"john.doe\"}")},
+			ExpectedSuccess: false,
+			ExpectedOutput:  "len([BODY].data) (INVALID) == 8",
+		},
+		{
+			Name:            "len-body-string",
+			Condition:       Condition("len([BODY]) == 8"),
+			Result:          &Result{body: []byte("john.doe")},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "len([BODY]) == 8",
+		},
+		{
+			Name:            "len-body-keyed-string",
+			Condition:       Condition("len([BODY].name) == 8"),
+			Result:          &Result{body: []byte("{\"name\": \"john.doe\"}")},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "len([BODY].name) == 8",
+		},
+		{
+			Name:            "len-body-keyed-int",
+			Condition:       Condition("len([BODY].age) == 2"),
+			Result:          &Result{body: []byte(`{"age":18}`)},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "len([BODY].age) == 2",
+		},
+		{
+			Name:            "len-body-keyed-bool",
+			Condition:       Condition("len([BODY].adult) == 4"),
+			Result:          &Result{body: []byte(`{"adult":true}`)},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "len([BODY].adult) == 4",
+		},
+		{
+			Name:            "len-body-object-inside-array",
+			Condition:       Condition("len([BODY][0]) == 23"),
+			Result:          &Result{body: []byte(`[{"age":18,"adult":true}]`)},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "len([BODY][0]) == 23",
+		},
+		{
+			Name:            "len-body-object-keyed-int-inside-array",
+			Condition:       Condition("len([BODY][0].age) == 2"),
+			Result:          &Result{body: []byte(`[{"age":18,"adult":true}]`)},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "len([BODY][0].age) == 2",
+		},
+		{
+			Name:            "len-body-keyed-bool-inside-array",
+			Condition:       Condition("len([BODY][0].adult) == 4"),
+			Result:          &Result{body: []byte(`[{"age":18,"adult":true}]`)},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "len([BODY][0].adult) == 4",
+		},
+		{
+			Name:            "len-body-object",
+			Condition:       Condition("len([BODY]) == 20"),
+			Result:          &Result{body: []byte("{\"name\": \"john.doe\"}")},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "len([BODY]) == 20",
+		},
+		// pat
+		{
+			Name:            "pat-body-1",
+			Condition:       Condition("[BODY] == pat(*john*)"),
+			Result:          &Result{body: []byte("{\"name\": \"john.doe\"}")},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "[BODY] == pat(*john*)",
+		},
+		{
+			Name:            "pat-body-2",
+			Condition:       Condition("[BODY].name == pat(john*)"),
+			Result:          &Result{body: []byte("{\"name\": \"john.doe\"}")},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "[BODY].name == pat(john*)",
+		},
+		{
+			Name:            "pat-body-failure",
+			Condition:       Condition("[BODY].name == pat(bob*)"),
+			Result:          &Result{body: []byte("{\"name\": \"john.doe\"}")},
+			ExpectedSuccess: false,
+			ExpectedOutput:  "[BODY].name (john.doe) == pat(bob*)",
+		},
+		{
+			Name:            "pat-body-html",
+			Condition:       Condition("[BODY] == pat(*<div id=\"user\">john.doe</div>*)"),
+			Result:          &Result{body: []byte(`<!DOCTYPE html><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /></head><body><div id="user">john.doe</div></body></html>`)},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "[BODY] == pat(*<div id=\"user\">john.doe</div>*)",
+		},
+		{
+			Name:            "pat-body-html-failure",
+			Condition:       Condition("[BODY] == pat(*<div id=\"user\">john.doe</div>*)"),
+			Result:          &Result{body: []byte(`<!DOCTYPE html><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /></head><body><div id="user">jane.doe</div></body></html>`)},
+			ExpectedSuccess: false,
+			ExpectedOutput:  "[BODY] (<!DOCTYPE html><html lang...(truncated)) == pat(*<div id=\"user\">john.doe</div>*)",
+		},
+		{
+			Name:            "pat-body-html-failure-alt",
+			Condition:       Condition("pat(*<div id=\"user\">john.doe</div>*) == [BODY]"),
+			Result:          &Result{body: []byte(`<!DOCTYPE html><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /></head><body><div id="user">jane.doe</div></body></html>`)},
+			ExpectedSuccess: false,
+			ExpectedOutput:  "pat(*<div id=\"user\">john.doe</div>*) == [BODY] (<!DOCTYPE html><html lang...(truncated))",
+		},
+		{
+			Name:            "pat-body-in-array",
+			Condition:       Condition("[BODY].data == pat(*Whatever*)"),
+			Result:          &Result{body: []byte("{\"data\": [\"hello\", \"world\", \"Whatever\"]}")},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "[BODY].data == pat(*Whatever*)",
+		},
+		{
+			Name:            "pat-ip",
+			Condition:       Condition("[IP] == pat(10.*)"),
+			Result:          &Result{IP: "10.0.0.0"},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "[IP] == pat(10.*)",
+		},
+		{
+			Name:            "pat-ip-failure",
+			Condition:       Condition("[IP] == pat(10.*)"),
+			Result:          &Result{IP: "255.255.255.255"},
+			ExpectedSuccess: false,
+			ExpectedOutput:  "[IP] (255.255.255.255) == pat(10.*)",
+		},
+		{
+			Name:            "pat-status",
+			Condition:       Condition("[STATUS] == pat(4*)"),
+			Result:          &Result{HTTPStatus: 404},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "[STATUS] == pat(4*)",
+		},
+		{
+			Name:            "pat-status-failure",
+			Condition:       Condition("[STATUS] == pat(4*)"),
+			Result:          &Result{HTTPStatus: 200},
+			ExpectedSuccess: false,
+			ExpectedOutput:  "[STATUS] (200) == pat(4*)",
+		},
+		// any
+		{
+			Name:            "any-body-1",
+			Condition:       Condition("[BODY].name == any(john.doe, jane.doe)"),
+			Result:          &Result{body: []byte("{\"name\": \"john.doe\"}")},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "[BODY].name == any(john.doe, jane.doe)",
+		},
+		{
+			Name:            "any-body-2",
+			Condition:       Condition("[BODY].name == any(john.doe, jane.doe)"),
+			Result:          &Result{body: []byte("{\"name\": \"jane.doe\"}")},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "[BODY].name == any(john.doe, jane.doe)",
+		},
+		{
+			Name:            "any-body-failure",
+			Condition:       Condition("[BODY].name == any(john.doe, jane.doe)"),
+			Result:          &Result{body: []byte("{\"name\": \"bob\"}")},
+			ExpectedSuccess: false,
+			ExpectedOutput:  "[BODY].name (bob) == any(john.doe, jane.doe)",
+		},
+		{
+			Name:            "any-status-1",
+			Condition:       Condition("[STATUS] == any(200, 429)"),
+			Result:          &Result{HTTPStatus: 200},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "[STATUS] == any(200, 429)",
+		},
+		{
+			Name:            "any-status-2",
+			Condition:       Condition("[STATUS] == any(200, 429)"),
+			Result:          &Result{HTTPStatus: 429},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "[STATUS] == any(200, 429)",
+		},
+		{
+			Name:            "any-status-reverse",
+			Condition:       Condition("any(200, 429) == [STATUS]"),
+			Result:          &Result{HTTPStatus: 429},
+			ExpectedSuccess: true,
+			ExpectedOutput:  "any(200, 429) == [STATUS]",
+		},
+		{
+			Name:            "any-status-failure",
+			Condition:       Condition("[STATUS] == any(200, 429)"),
+			Result:          &Result{HTTPStatus: 404},
+			ExpectedSuccess: false,
+			ExpectedOutput:  "[STATUS] (404) == any(200, 429)",
+		},
+		{
+			Name:                        "any-status-failure-but-dont-resolve",
+			Condition:                   Condition("[STATUS] == any(200, 429)"),
+			Result:                      &Result{HTTPStatus: 404},
+			DontResolveFailedConditions: true,
+			ExpectedSuccess:             false,
+			ExpectedOutput:              "[STATUS] == any(200, 429)",
+		},
+		// has
 		{
 			Name:            "has",
 			Condition:       Condition("has([BODY].errors) == false"),
@@ -451,13 +528,6 @@ func TestCondition_evaluate(t *testing.T) {
 			ExpectedSuccess:             false,
 			ExpectedOutput:              "has([BODY].errors) == false",
 		},
-		{
-			Name:            "no-placeholders",
-			Condition:       Condition("1 == 2"),
-			Result:          &Result{},
-			ExpectedSuccess: false,
-			ExpectedOutput:  "1 == 2",
-		},
 	}
 	for _, scenario := range scenarios {
 		t.Run(scenario.Name, func(t *testing.T) {

core/dns_test.go

@@ -22,7 +22,7 @@ func TestIntegrationQuery(t *testing.T) {
 				QueryType: "A",
 				QueryName: "example.com.",
 			},
-			inputURL:        "1.1.1.1",
+			inputURL:        "8.8.8.8",
 			expectedDNSCode: "NOERROR",
 			expectedBody:    "93.184.216.34",
 		},
@@ -32,7 +32,7 @@ func TestIntegrationQuery(t *testing.T) {
 				QueryType: "AAAA",
 				QueryName: "example.com.",
 			},
-			inputURL:        "1.1.1.1",
+			inputURL:        "8.8.8.8",
 			expectedDNSCode: "NOERROR",
 			expectedBody:    "2606:2800:220:1:248:1893:25c8:1946",
 		},
@@ -42,7 +42,7 @@ func TestIntegrationQuery(t *testing.T) {
 				QueryType: "CNAME",
 				QueryName: "en.wikipedia.org.",
 			},
-			inputURL:        "1.1.1.1",
+			inputURL:        "8.8.8.8",
 			expectedDNSCode: "NOERROR",
 			expectedBody:    "dyna.wikimedia.org.",
 		},
@@ -52,7 +52,7 @@ func TestIntegrationQuery(t *testing.T) {
 				QueryType: "MX",
 				QueryName: "example.com.",
 			},
-			inputURL:        "1.1.1.1",
+			inputURL:        "8.8.8.8",
 			expectedDNSCode: "NOERROR",
 			expectedBody:    ".",
 		},
@@ -62,7 +62,7 @@ func TestIntegrationQuery(t *testing.T) {
 				QueryType: "NS",
 				QueryName: "example.com.",
 			},
-			inputURL:        "1.1.1.1",
+			inputURL:        "8.8.8.8",
 			expectedDNSCode: "NOERROR",
 			expectedBody:    "*.iana-servers.net.",
 		},
@@ -72,7 +72,7 @@ func TestIntegrationQuery(t *testing.T) {
 				QueryType: "B",
 				QueryName: "example",
 			},
-			inputURL:      "1.1.1.1",
+			inputURL:      "8.8.8.8",
 			isErrExpected: true,
 		},
 	}

core/endpoint.go

@@ -33,13 +33,15 @@ const (
 	// GatusUserAgent is the default user agent that Gatus uses to send requests.
 	GatusUserAgent = "Gatus/1.0"
 
-	// EndpointType enum for the endpoint type.
 	EndpointTypeDNS      EndpointType = "DNS"
 	EndpointTypeTCP      EndpointType = "TCP"
+	EndpointTypeSCTP     EndpointType = "SCTP"
+	EndpointTypeUDP      EndpointType = "UDP"
 	EndpointTypeICMP     EndpointType = "ICMP"
 	EndpointTypeSTARTTLS EndpointType = "STARTTLS"
 	EndpointTypeTLS      EndpointType = "TLS"
 	EndpointTypeHTTP     EndpointType = "HTTP"
+	EndpointTypeUNKNOWN  EndpointType = "UNKNOWN"
 )
 
 var (
@@ -54,6 +56,15 @@ var (
 
 	// ErrEndpointWithInvalidNameOrGroup is the error with which Gatus will panic if an endpoint has an invalid character where it shouldn't
 	ErrEndpointWithInvalidNameOrGroup = errors.New("endpoint name and group must not have \" or \\")
+
+	// ErrUnknownEndpointType is the error with which Gatus will panic if an endpoint has an unknown type
+	ErrUnknownEndpointType = errors.New("unknown endpoint type")
+
+	// ErrInvalidEndpointIntervalForDomainExpirationPlaceholder is the error with which Gatus will panic if an endpoint
+	// has both an interval smaller than 5 minutes and a condition with DomainExpirationPlaceholder.
+	// This is because the free whois service we are using should not be abused, especially considering the fact that
+	// the data takes a while to be updated.
+	ErrInvalidEndpointIntervalForDomainExpirationPlaceholder = errors.New("the minimum interval for an endpoint with a condition using the " + DomainExpirationPlaceholder + " placeholder is 300s (5m)")
 )
 
 // Endpoint is the configuration of a monitored
@@ -122,18 +133,24 @@ func (endpoint Endpoint) Type() EndpointType {
 		return EndpointTypeDNS
 	case strings.HasPrefix(endpoint.URL, "tcp://"):
 		return EndpointTypeTCP
+	case strings.HasPrefix(endpoint.URL, "sctp://"):
+		return EndpointTypeSCTP
+	case strings.HasPrefix(endpoint.URL, "udp://"):
+		return EndpointTypeUDP
 	case strings.HasPrefix(endpoint.URL, "icmp://"):
 		return EndpointTypeICMP
 	case strings.HasPrefix(endpoint.URL, "starttls://"):
 		return EndpointTypeSTARTTLS
 	case strings.HasPrefix(endpoint.URL, "tls://"):
 		return EndpointTypeTLS
-	default:
+	case strings.HasPrefix(endpoint.URL, "http://") || strings.HasPrefix(endpoint.URL, "https://"):
 		return EndpointTypeHTTP
+	default:
+		return EndpointTypeUNKNOWN
 	}
 }
 
-// ValidateAndSetDefaults validates the endpoint's configuration and sets the default value of fields that have one
+// ValidateAndSetDefaults validates the endpoint's configuration and sets the default value of args that have one
 func (endpoint *Endpoint) ValidateAndSetDefaults() error {
 	// Set default values
 	if endpoint.ClientConfig == nil {
@@ -185,9 +202,19 @@ func (endpoint *Endpoint) ValidateAndSetDefaults() error {
 	if len(endpoint.Conditions) == 0 {
 		return ErrEndpointWithNoCondition
 	}
+	if endpoint.Interval < 5*time.Minute {
+		for _, condition := range endpoint.Conditions {
+			if condition.hasDomainExpirationPlaceholder() {
+				return ErrInvalidEndpointIntervalForDomainExpirationPlaceholder
+			}
+		}
+	}
 	if endpoint.DNS != nil {
 		return endpoint.DNS.validateAndSetDefault()
 	}
+	if endpoint.Type() == EndpointTypeUNKNOWN {
+		return ErrUnknownEndpointType
+	}
 	// Make sure that the request can be created
 	_, err := http.NewRequest(endpoint.Method, endpoint.URL, bytes.NewBuffer([]byte(endpoint.Body)))
 	if err != nil {
@@ -212,12 +239,35 @@ func (endpoint Endpoint) Key() string {
 // EvaluateHealth sends a request to the endpoint's URL and evaluates the conditions of the endpoint.
 func (endpoint *Endpoint) EvaluateHealth() *Result {
 	result := &Result{Success: true, Errors: []string{}}
-	endpoint.getIP(result)
+	// Parse or extract hostname from URL
+	if endpoint.DNS != nil {
+		result.Hostname = strings.TrimSuffix(endpoint.URL, ":53")
+	} else {
+		urlObject, err := url.Parse(endpoint.URL)
+		if err != nil {
+			result.AddError(err.Error())
+		} else {
+			result.Hostname = urlObject.Hostname()
+		}
+	}
+	// Retrieve IP if necessary
+	if endpoint.needsToRetrieveIP() {
+		endpoint.getIP(result)
+	}
+	// Retrieve domain expiration if necessary
+	if endpoint.needsToRetrieveDomainExpiration() && len(result.Hostname) > 0 {
+		var err error
+		if result.DomainExpiration, err = client.GetDomainExpiration(result.Hostname); err != nil {
+			result.AddError(err.Error())
+		}
+	}
+	// Call the endpoint (if there's no errors)
 	if len(result.Errors) == 0 {
 		endpoint.call(result)
 	} else {
 		result.Success = false
 	}
+	// Evaluate the conditions
 	for _, condition := range endpoint.Conditions {
 		success := condition.evaluate(result, endpoint.UIConfig.DontResolveFailedConditions)
 		if !success {
@@ -243,22 +293,12 @@ func (endpoint *Endpoint) EvaluateHealth() *Result {
 }
 
 func (endpoint *Endpoint) getIP(result *Result) {
-	if endpoint.DNS != nil {
-		result.Hostname = strings.TrimSuffix(endpoint.URL, ":53")
-	} else {
-		urlObject, err := url.Parse(endpoint.URL)
-		if err != nil {
-			result.AddError(err.Error())
-			return
-		}
-		result.Hostname = urlObject.Hostname()
-	}
-	ips, err := net.LookupIP(result.Hostname)
-	if err != nil {
+	if ips, err := net.LookupIP(result.Hostname); err != nil {
 		result.AddError(err.Error())
 		return
+	} else {
+		result.IP = ips[0].String()
 	}
-	result.IP = ips[0].String()
 }
 
 func (endpoint *Endpoint) call(result *Result) {
@@ -289,6 +329,12 @@ func (endpoint *Endpoint) call(result *Result) {
 	} else if endpointType == EndpointTypeTCP {
 		result.Connected = client.CanCreateTCPConnection(strings.TrimPrefix(endpoint.URL, "tcp://"), endpoint.ClientConfig)
 		result.Duration = time.Since(startTime)
+	} else if endpointType == EndpointTypeUDP {
+		result.Connected = client.CanCreateUDPConnection(strings.TrimPrefix(endpoint.URL, "udp://"), endpoint.ClientConfig)
+		result.Duration = time.Since(startTime)
+	} else if endpointType == EndpointTypeSCTP {
+		result.Connected = client.CanCreateSCTPConnection(strings.TrimPrefix(endpoint.URL, "sctp://"), endpoint.ClientConfig)
+		result.Duration = time.Since(startTime)
 	} else if endpointType == EndpointTypeICMP {
 		result.Connected, result.Duration = client.Ping(strings.TrimPrefix(endpoint.URL, "icmp://"), endpoint.ClientConfig)
 	} else {
@@ -309,7 +355,7 @@ func (endpoint *Endpoint) call(result *Result) {
 		if endpoint.needsToReadBody() {
 			result.body, err = io.ReadAll(response.Body)
 			if err != nil {
-				result.AddError(err.Error())
+				result.AddError("error reading response body:" + err.Error())
 			}
 		}
 	}
@@ -336,7 +382,7 @@ func (endpoint *Endpoint) buildHTTPRequest() *http.Request {
 	return request
 }
 
-// needsToReadBody checks if there's any conditions that requires the response body to be read
+// needsToReadBody checks if there's any condition that requires the response body to be read
 func (endpoint *Endpoint) needsToReadBody() bool {
 	for _, condition := range endpoint.Conditions {
 		if condition.hasBodyPlaceholder() {
@@ -345,3 +391,23 @@ func (endpoint *Endpoint) needsToReadBody() bool {
 	}
 	return false
 }
+
+// needsToRetrieveDomainExpiration checks if there's any condition that requires a whois query to be performed
+func (endpoint *Endpoint) needsToRetrieveDomainExpiration() bool {
+	for _, condition := range endpoint.Conditions {
+		if condition.hasDomainExpirationPlaceholder() {
+			return true
+		}
+	}
+	return false
+}
+
+// needsToRetrieveIP checks if there's any condition that requires an IP lookup
+func (endpoint *Endpoint) needsToRetrieveIP() bool {
+	for _, condition := range endpoint.Conditions {
+		if condition.hasIPPlaceholder() {
+			return true
+		}
+	}
+	return false
+}

core/endpoint_test.go

@@ -1,7 +1,11 @@
 package core
 
 import (
+	"bytes"
+	"crypto/tls"
+	"crypto/x509"
 	"io"
+	"net/http"
 	"strings"
 	"testing"
 	"time"
@@ -9,8 +13,233 @@ import (
 	"github.com/TwiN/gatus/v4/alerting/alert"
 	"github.com/TwiN/gatus/v4/client"
 	"github.com/TwiN/gatus/v4/core/ui"
+	"github.com/TwiN/gatus/v4/test"
 )
 
+func TestEndpoint(t *testing.T) {
+	defer client.InjectHTTPClient(nil)
+	scenarios := []struct {
+		Name             string
+		Endpoint         Endpoint
+		ExpectedResult   *Result
+		MockRoundTripper test.MockRoundTripper
+	}{
+		{
+			Name: "success",
+			Endpoint: Endpoint{
+				Name:       "website-health",
+				URL:        "https://twin.sh/health",
+				Conditions: []Condition{"[STATUS] == 200", "[BODY].status == UP", "[CERTIFICATE_EXPIRATION] > 24h"},
+			},
+			ExpectedResult: &Result{
+				Success:   true,
+				Connected: true,
+				Hostname:  "twin.sh",
+				ConditionResults: []*ConditionResult{
+					{Condition: "[STATUS] == 200", Success: true},
+					{Condition: "[BODY].status == UP", Success: true},
+					{Condition: "[CERTIFICATE_EXPIRATION] > 24h", Success: true},
+				},
+				DomainExpiration: 0, // Because there's no [DOMAIN_EXPIRATION] condition, this is not resolved, so it should be 0.
+			},
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{
+					StatusCode: http.StatusOK,
+					Body:       io.NopCloser(bytes.NewBufferString(`{"status": "UP"}`)),
+					TLS:        &tls.ConnectionState{PeerCertificates: []*x509.Certificate{{NotAfter: time.Now().Add(9999 * time.Hour)}}},
+				}
+			}),
+		},
+		{
+			Name: "failed-body-condition",
+			Endpoint: Endpoint{
+				Name:       "website-health",
+				URL:        "https://twin.sh/health",
+				Conditions: []Condition{"[STATUS] == 200", "[BODY].status == UP"},
+			},
+			ExpectedResult: &Result{
+				Success:   false,
+				Connected: true,
+				Hostname:  "twin.sh",
+				ConditionResults: []*ConditionResult{
+					{Condition: "[STATUS] == 200", Success: true},
+					{Condition: "[BODY].status (DOWN) == UP", Success: false},
+				},
+				DomainExpiration: 0, // Because there's no [DOMAIN_EXPIRATION] condition, this is not resolved, so it should be 0.
+			},
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusOK, Body: io.NopCloser(bytes.NewBufferString(`{"status": "DOWN"}`))}
+			}),
+		},
+		{
+			Name: "failed-status-condition",
+			Endpoint: Endpoint{
+				Name:       "website-health",
+				URL:        "https://twin.sh/health",
+				Conditions: []Condition{"[STATUS] == 200"},
+			},
+			ExpectedResult: &Result{
+				Success:   false,
+				Connected: true,
+				Hostname:  "twin.sh",
+				ConditionResults: []*ConditionResult{
+					{Condition: "[STATUS] (502) == 200", Success: false},
+				},
+				DomainExpiration: 0, // Because there's no [DOMAIN_EXPIRATION] condition, this is not resolved, so it should be 0.
+			},
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusBadGateway, Body: http.NoBody}
+			}),
+		},
+		{
+			Name: "condition-with-failed-certificate-expiration",
+			Endpoint: Endpoint{
+				Name:       "website-health",
+				URL:        "https://twin.sh/health",
+				Conditions: []Condition{"[CERTIFICATE_EXPIRATION] > 100h"},
+				UIConfig:   &ui.Config{DontResolveFailedConditions: true},
+			},
+			ExpectedResult: &Result{
+				Success:   false,
+				Connected: true,
+				Hostname:  "twin.sh",
+				ConditionResults: []*ConditionResult{
+					// Because UIConfig.DontResolveFailedConditions is true, the values in the condition should not be resolved
+					{Condition: "[CERTIFICATE_EXPIRATION] > 100h", Success: false},
+				},
+				DomainExpiration: 0, // Because there's no [DOMAIN_EXPIRATION] condition, this is not resolved, so it should be 0.
+			},
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{
+					StatusCode: http.StatusOK,
+					Body:       http.NoBody,
+					TLS:        &tls.ConnectionState{PeerCertificates: []*x509.Certificate{{NotAfter: time.Now().Add(5 * time.Hour)}}},
+				}
+			}),
+		},
+		{
+			Name: "domain-expiration",
+			Endpoint: Endpoint{
+				Name:       "website-health",
+				URL:        "https://twin.sh/health",
+				Conditions: []Condition{"[DOMAIN_EXPIRATION] > 100h"},
+			},
+			ExpectedResult: &Result{
+				Success:   true,
+				Connected: true,
+				Hostname:  "twin.sh",
+				ConditionResults: []*ConditionResult{
+					{Condition: "[DOMAIN_EXPIRATION] > 100h", Success: true},
+				},
+				DomainExpiration: 999999 * time.Hour, // Note that this test only checks if it's non-zero.
+			},
+			MockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
+				return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
+			}),
+		},
+		{
+			Name: "endpoint-that-will-time-out-and-hidden-hostname",
+			Endpoint: Endpoint{
+				Name:         "endpoint-that-will-time-out",
+				URL:          "https://twin.sh/health",
+				Conditions:   []Condition{"[CONNECTED] == true"},
+				UIConfig:     &ui.Config{HideHostname: true},
+				ClientConfig: &client.Config{Timeout: time.Millisecond},
+			},
+			ExpectedResult: &Result{
+				Success:   false,
+				Connected: false,
+				Hostname:  "", // Because Endpoint.UIConfig.HideHostname is true, this should be empty.
+				ConditionResults: []*ConditionResult{
+					{Condition: "[CONNECTED] (false) == true", Success: false},
+				},
+				// Because there's no [DOMAIN_EXPIRATION] condition, this is not resolved, so it should be 0.
+				DomainExpiration: 0,
+				// Because Endpoint.UIConfig.HideHostname is true, the hostname should be replaced by <redacted>.
+				Errors: []string{`Get "https://<redacted>/health": context deadline exceeded (Client.Timeout exceeded while awaiting headers)`},
+			},
+			MockRoundTripper: nil,
+		},
+		{
+			Name: "endpoint-that-will-time-out-and-hidden-url",
+			Endpoint: Endpoint{
+				Name:         "endpoint-that-will-time-out",
+				URL:          "https://twin.sh/health",
+				Conditions:   []Condition{"[CONNECTED] == true"},
+				UIConfig:     &ui.Config{HideURL: true},
+				ClientConfig: &client.Config{Timeout: time.Millisecond},
+			},
+			ExpectedResult: &Result{
+				Success:   false,
+				Connected: false,
+				Hostname:  "twin.sh",
+				ConditionResults: []*ConditionResult{
+					{Condition: "[CONNECTED] (false) == true", Success: false},
+				},
+				// Because there's no [DOMAIN_EXPIRATION] condition, this is not resolved, so it should be 0.
+				DomainExpiration: 0,
+				// Because Endpoint.UIConfig.HideURL is true, the URL should be replaced by <redacted>.
+				Errors: []string{`Get "<redacted>": context deadline exceeded (Client.Timeout exceeded while awaiting headers)`},
+			},
+			MockRoundTripper: nil,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.Name, func(t *testing.T) {
+			if scenario.MockRoundTripper != nil {
+				mockClient := &http.Client{Transport: scenario.MockRoundTripper}
+				if scenario.Endpoint.ClientConfig != nil && scenario.Endpoint.ClientConfig.Timeout > 0 {
+					mockClient.Timeout = scenario.Endpoint.ClientConfig.Timeout
+				}
+				client.InjectHTTPClient(mockClient)
+			} else {
+				client.InjectHTTPClient(nil)
+			}
+			scenario.Endpoint.ValidateAndSetDefaults()
+			result := scenario.Endpoint.EvaluateHealth()
+			if result.Success != scenario.ExpectedResult.Success {
+				t.Errorf("Expected success to be %v, got %v", scenario.ExpectedResult.Success, result.Success)
+			}
+			if result.Connected != scenario.ExpectedResult.Connected {
+				t.Errorf("Expected connected to be %v, got %v", scenario.ExpectedResult.Connected, result.Connected)
+			}
+			if result.Hostname != scenario.ExpectedResult.Hostname {
+				t.Errorf("Expected hostname to be %v, got %v", scenario.ExpectedResult.Hostname, result.Hostname)
+			}
+			if len(result.ConditionResults) != len(scenario.ExpectedResult.ConditionResults) {
+				t.Errorf("Expected %v condition results, got %v", len(scenario.ExpectedResult.ConditionResults), len(result.ConditionResults))
+			} else {
+				for i, conditionResult := range result.ConditionResults {
+					if conditionResult.Condition != scenario.ExpectedResult.ConditionResults[i].Condition {
+						t.Errorf("Expected condition to be %v, got %v", scenario.ExpectedResult.ConditionResults[i].Condition, conditionResult.Condition)
+					}
+					if conditionResult.Success != scenario.ExpectedResult.ConditionResults[i].Success {
+						t.Errorf("Expected success of condition '%s' to be %v, got %v", conditionResult.Condition, scenario.ExpectedResult.ConditionResults[i].Success, conditionResult.Success)
+					}
+				}
+			}
+			if len(result.Errors) != len(scenario.ExpectedResult.Errors) {
+				t.Errorf("Expected %v errors, got %v", len(scenario.ExpectedResult.Errors), len(result.Errors))
+			} else {
+				for i, err := range result.Errors {
+					if err != scenario.ExpectedResult.Errors[i] {
+						t.Errorf("Expected error to be %v, got %v", scenario.ExpectedResult.Errors[i], err)
+					}
+				}
+			}
+			if result.DomainExpiration != scenario.ExpectedResult.DomainExpiration {
+				// Note that DomainExpiration is only resolved if there's a condition with the DomainExpirationPlaceholder in it.
+				// In other words, if there's no condition with [DOMAIN_EXPIRATION] in it, the DomainExpiration field will be 0.
+				// Because this is a live call, mocking it would be too much of a pain, so we're just going to check if
+				// the actual value is non-zero when the expected result is non-zero.
+				if scenario.ExpectedResult.DomainExpiration.Hours() > 0 && !(result.DomainExpiration.Hours() > 0) {
+					t.Errorf("Expected domain expiration to be non-zero, got %v", result.DomainExpiration)
+				}
+			}
+		})
+	}
+}
+
 func TestEndpoint_IsEnabled(t *testing.T) {
 	if !(Endpoint{Enabled: nil}).IsEnabled() {
 		t.Error("endpoint.IsEnabled() should've returned true, because Enabled was set to nil")
@@ -24,53 +253,84 @@ func TestEndpoint_IsEnabled(t *testing.T) {
 }
 
 func TestEndpoint_Type(t *testing.T) {
-	type fields struct {
+	type args struct {
 		URL string
 		DNS *DNS
 	}
 	tests := []struct {
-		fields fields
-		want   EndpointType
-	}{{
-		fields: fields{
-			URL: "1.1.1.1",
-			DNS: &DNS{
-				QueryType: "A",
-				QueryName: "example.com",
+		args args
+		want EndpointType
+	}{
+		{
+			args: args{
+				URL: "8.8.8.8",
+				DNS: &DNS{
+					QueryType: "A",
+					QueryName: "example.com",
+				},
 			},
+			want: EndpointTypeDNS,
 		},
-		want: EndpointTypeDNS,
-	}, {
-		fields: fields{
-			URL: "tcp://127.0.0.1:6379",
+		{
+			args: args{
+				URL: "tcp://127.0.0.1:6379",
+			},
+			want: EndpointTypeTCP,
 		},
-		want: EndpointTypeTCP,
-	}, {
-		fields: fields{
-			URL: "icmp://example.com",
+		{
+			args: args{
+				URL: "icmp://example.com",
+			},
+			want: EndpointTypeICMP,
 		},
-		want: EndpointTypeICMP,
-	}, {
-		fields: fields{
-			URL: "starttls://smtp.gmail.com:587",
+		{
+			args: args{
+				URL: "sctp://example.com",
+			},
+			want: EndpointTypeSCTP,
 		},
-		want: EndpointTypeSTARTTLS,
-	}, {
-		fields: fields{
-			URL: "tls://example.com:443",
+		{
+			args: args{
+				URL: "udp://example.com",
+			},
+			want: EndpointTypeUDP,
 		},
-		want: EndpointTypeTLS,
-	}, {
-		fields: fields{
-			URL: "https://twin.sh/health",
+		{
+			args: args{
+				URL: "starttls://smtp.gmail.com:587",
+			},
+			want: EndpointTypeSTARTTLS,
 		},
-		want: EndpointTypeHTTP,
-	}}
+		{
+			args: args{
+				URL: "tls://example.com:443",
+			},
+			want: EndpointTypeTLS,
+		},
+		{
+			args: args{
+				URL: "https://twin.sh/health",
+			},
+			want: EndpointTypeHTTP,
+		},
+		{
+			args: args{
+				URL: "invalid://example.org",
+			},
+			want: EndpointTypeUNKNOWN,
+		},
+		{
+			args: args{
+				URL: "no-scheme",
+			},
+			want: EndpointTypeUNKNOWN,
+		},
+	}
 	for _, tt := range tests {
 		t.Run(string(tt.want), func(t *testing.T) {
 			endpoint := Endpoint{
-				URL: tt.fields.URL,
-				DNS: tt.fields.DNS,
+				URL: tt.args.URL,
+				DNS: tt.args.DNS,
 			}
 			if got := endpoint.Type(); got != tt.want {
 				t.Errorf("Endpoint.Type() = %v, want %v", got, tt.want)
@@ -124,11 +384,10 @@ func TestEndpoint_ValidateAndSetDefaults(t *testing.T) {
 }
 
 func TestEndpoint_ValidateAndSetDefaultsWithClientConfig(t *testing.T) {
-	condition := Condition("[STATUS] == 200")
 	endpoint := Endpoint{
 		Name:       "website-health",
 		URL:        "https://twin.sh/health",
-		Conditions: []Condition{condition},
+		Conditions: []Condition{Condition("[STATUS] == 200")},
 		ClientConfig: &client.Config{
 			Insecure:       true,
 			IgnoreRedirect: true,
@@ -151,51 +410,10 @@ func TestEndpoint_ValidateAndSetDefaultsWithClientConfig(t *testing.T) {
 	}
 }
 
-func TestEndpoint_ValidateAndSetDefaultsWithNoName(t *testing.T) {
-	defer func() { recover() }()
-	condition := Condition("[STATUS] == 200")
-	endpoint := &Endpoint{
-		Name:       "",
-		URL:        "http://example.com",
-		Conditions: []Condition{condition},
-	}
-	err := endpoint.ValidateAndSetDefaults()
-	if err == nil {
-		t.Fatal("Should've returned an error because endpoint didn't have a name, which is a mandatory field")
-	}
-}
-
-func TestEndpoint_ValidateAndSetDefaultsWithNoUrl(t *testing.T) {
-	defer func() { recover() }()
-	condition := Condition("[STATUS] == 200")
-	endpoint := &Endpoint{
-		Name:       "example",
-		URL:        "",
-		Conditions: []Condition{condition},
-	}
-	err := endpoint.ValidateAndSetDefaults()
-	if err == nil {
-		t.Fatal("Should've returned an error because endpoint didn't have an url, which is a mandatory field")
-	}
-}
-
-func TestEndpoint_ValidateAndSetDefaultsWithNoConditions(t *testing.T) {
-	defer func() { recover() }()
-	endpoint := &Endpoint{
-		Name:       "example",
-		URL:        "http://example.com",
-		Conditions: nil,
-	}
-	err := endpoint.ValidateAndSetDefaults()
-	if err == nil {
-		t.Fatal("Should've returned an error because endpoint didn't have at least 1 condition")
-	}
-}
-
 func TestEndpoint_ValidateAndSetDefaultsWithDNS(t *testing.T) {
 	endpoint := &Endpoint{
 		Name: "dns-test",
-		URL:  "http://example.com",
+		URL:  "https://example.com",
 		DNS: &DNS{
 			QueryType: "A",
 			QueryName: "example.com",
@@ -204,13 +422,70 @@ func TestEndpoint_ValidateAndSetDefaultsWithDNS(t *testing.T) {
 	}
 	err := endpoint.ValidateAndSetDefaults()
 	if err != nil {
-
+		t.Error("did not expect an error, got", err)
 	}
 	if endpoint.DNS.QueryName != "example.com." {
 		t.Error("Endpoint.dns.query-name should be formatted with . suffix")
 	}
 }
 
+func TestEndpoint_ValidateAndSetDefaultsWithSimpleErrors(t *testing.T) {
+	scenarios := []struct {
+		endpoint    *Endpoint
+		expectedErr error
+	}{
+		{
+			endpoint: &Endpoint{
+				Name:       "",
+				URL:        "https://example.com",
+				Conditions: []Condition{Condition("[STATUS] == 200")},
+			},
+			expectedErr: ErrEndpointWithNoName,
+		},
+		{
+			endpoint: &Endpoint{
+				Name:       "endpoint-with-no-url",
+				URL:        "",
+				Conditions: []Condition{Condition("[STATUS] == 200")},
+			},
+			expectedErr: ErrEndpointWithNoURL,
+		},
+		{
+			endpoint: &Endpoint{
+				Name:       "endpoint-with-no-conditions",
+				URL:        "https://example.com",
+				Conditions: nil,
+			},
+			expectedErr: ErrEndpointWithNoCondition,
+		},
+		{
+			endpoint: &Endpoint{
+				Name:       "domain-expiration-with-bad-interval",
+				URL:        "https://example.com",
+				Interval:   time.Minute,
+				Conditions: []Condition{Condition("[DOMAIN_EXPIRATION] > 720h")},
+			},
+			expectedErr: ErrInvalidEndpointIntervalForDomainExpirationPlaceholder,
+		},
+		{
+			endpoint: &Endpoint{
+				Name:       "domain-expiration-with-good-interval",
+				URL:        "https://example.com",
+				Interval:   5 * time.Minute,
+				Conditions: []Condition{Condition("[DOMAIN_EXPIRATION] > 720h")},
+			},
+			expectedErr: nil,
+		},
+	}
+	for _, scenario := range scenarios {
+		t.Run(scenario.endpoint.Name, func(t *testing.T) {
+			if err := scenario.endpoint.ValidateAndSetDefaults(); err != scenario.expectedErr {
+				t.Errorf("Expected error %v, got %v", scenario.expectedErr, err)
+			}
+		})
+	}
+}
+
 func TestEndpoint_buildHTTPRequest(t *testing.T) {
 	condition := Condition("[STATUS] == 200")
 	endpoint := Endpoint{
@@ -330,26 +605,6 @@ func TestIntegrationEvaluateHealth(t *testing.T) {
 	}
 }
 
-func TestIntegrationEvaluateHealthWithFailure(t *testing.T) {
-	condition := Condition("[STATUS] == 500")
-	endpoint := Endpoint{
-		Name:       "website-health",
-		URL:        "https://twin.sh/health",
-		Conditions: []Condition{condition},
-	}
-	endpoint.ValidateAndSetDefaults()
-	result := endpoint.EvaluateHealth()
-	if result.ConditionResults[0].Success {
-		t.Errorf("Condition '%s' should have been a failure", condition)
-	}
-	if !result.Connected {
-		t.Error("Because the connection has been established, result.Connected should've been true")
-	}
-	if result.Success {
-		t.Error("Because one of the conditions failed, result.Success should have been false")
-	}
-}
-
 func TestIntegrationEvaluateHealthWithInvalidCondition(t *testing.T) {
 	condition := Condition("[STATUS] invalid 200")
 	endpoint := Endpoint{
@@ -370,32 +625,6 @@ func TestIntegrationEvaluateHealthWithInvalidCondition(t *testing.T) {
 	}
 }
 
-func TestIntegrationEvaluateHealthWithError(t *testing.T) {
-	condition := Condition("[STATUS] == 200")
-	endpoint := Endpoint{
-		Name:       "invalid-host",
-		URL:        "http://invalid/health",
-		Conditions: []Condition{condition},
-		UIConfig: &ui.Config{
-			HideHostname: true,
-		},
-	}
-	endpoint.ValidateAndSetDefaults()
-	result := endpoint.EvaluateHealth()
-	if result.Success {
-		t.Error("Because one of the conditions was invalid, result.Success should have been false")
-	}
-	if len(result.Errors) == 0 {
-		t.Error("There should've been an error")
-	}
-	if !strings.Contains(result.Errors[0], "<redacted>") {
-		t.Error("result.Errors[0] should've had the hostname redacted because ui.hide-hostname is set to true")
-	}
-	if result.Hostname != "" {
-		t.Error("result.Hostname should've been empty because ui.hide-hostname is set to true")
-	}
-}
-
 func TestIntegrationEvaluateHealthWithErrorAndHideURL(t *testing.T) {
 	endpoint := Endpoint{
 		Name:       "invalid-url",
@@ -426,7 +655,7 @@ func TestIntegrationEvaluateHealthForDNS(t *testing.T) {
 	conditionBody := Condition("[BODY] == 93.184.216.34")
 	endpoint := Endpoint{
 		Name: "example",
-		URL:  "1.1.1.1",
+		URL:  "8.8.8.8",
 		DNS: &DNS{
 			QueryType: "A",
 			QueryName: "example.com.",
@@ -436,7 +665,7 @@ func TestIntegrationEvaluateHealthForDNS(t *testing.T) {
 	endpoint.ValidateAndSetDefaults()
 	result := endpoint.EvaluateHealth()
 	if !result.ConditionResults[0].Success {
-		t.Errorf("Conditions '%s' and %s should have been a success", conditionSuccess, conditionBody)
+		t.Errorf("Conditions '%s' and '%s' should have been a success", conditionSuccess, conditionBody)
 	}
 	if !result.Connected {
 		t.Error("Because the connection has been established, result.Connected should've been true")
@@ -447,16 +676,15 @@ func TestIntegrationEvaluateHealthForDNS(t *testing.T) {
 }
 
 func TestIntegrationEvaluateHealthForICMP(t *testing.T) {
-	conditionSuccess := Condition("[CONNECTED] == true")
 	endpoint := Endpoint{
 		Name:       "icmp-test",
 		URL:        "icmp://127.0.0.1",
-		Conditions: []Condition{conditionSuccess},
+		Conditions: []Condition{"[CONNECTED] == true"},
 	}
 	endpoint.ValidateAndSetDefaults()
 	result := endpoint.EvaluateHealth()
 	if !result.ConditionResults[0].Success {
-		t.Errorf("Conditions '%s' should have been a success", conditionSuccess)
+		t.Errorf("Conditions '%s' should have been a success", endpoint.Conditions[0])
 	}
 	if !result.Connected {
 		t.Error("Because the connection has been established, result.Connected should've been true")
@@ -466,12 +694,20 @@ func TestIntegrationEvaluateHealthForICMP(t *testing.T) {
 	}
 }
 
+func TestEndpoint_DisplayName(t *testing.T) {
+	if endpoint := (Endpoint{Name: "n"}); endpoint.DisplayName() != "n" {
+		t.Error("endpoint.DisplayName() should've been 'n', but was", endpoint.DisplayName())
+	}
+	if endpoint := (Endpoint{Group: "g", Name: "n"}); endpoint.DisplayName() != "g/n" {
+		t.Error("endpoint.DisplayName() should've been 'g/n', but was", endpoint.DisplayName())
+	}
+}
+
 func TestEndpoint_getIP(t *testing.T) {
-	conditionSuccess := Condition("[CONNECTED] == true")
 	endpoint := Endpoint{
 		Name:       "invalid-url-test",
 		URL:        "",
-		Conditions: []Condition{conditionSuccess},
+		Conditions: []Condition{"[CONNECTED] == true"},
 	}
 	result := &Result{}
 	endpoint.getIP(result)
@@ -480,7 +716,7 @@ func TestEndpoint_getIP(t *testing.T) {
 	}
 }
 
-func TestEndpoint_NeedsToReadBody(t *testing.T) {
+func TestEndpoint_needsToReadBody(t *testing.T) {
 	statusCondition := Condition("[STATUS] == 200")
 	bodyCondition := Condition("[BODY].status == UP")
 	bodyConditionWithLength := Condition("len([BODY].tags) > 0")
@@ -503,3 +739,21 @@ func TestEndpoint_NeedsToReadBody(t *testing.T) {
 		t.Error("expected true, got false")
 	}
 }
+
+func TestEndpoint_needsToRetrieveDomainExpiration(t *testing.T) {
+	if (&Endpoint{Conditions: []Condition{"[STATUS] == 200"}}).needsToRetrieveDomainExpiration() {
+		t.Error("expected false, got true")
+	}
+	if !(&Endpoint{Conditions: []Condition{"[STATUS] == 200", "[DOMAIN_EXPIRATION] < 720h"}}).needsToRetrieveDomainExpiration() {
+		t.Error("expected true, got false")
+	}
+}
+
+func TestEndpoint_needsToRetrieveIP(t *testing.T) {
+	if (&Endpoint{Conditions: []Condition{"[STATUS] == 200"}}).needsToRetrieveIP() {
+		t.Error("expected false, got true")
+	}
+	if !(&Endpoint{Conditions: []Condition{"[STATUS] == 200", "[IP] == 127.0.0.1"}}).needsToRetrieveIP() {
+		t.Error("expected true, got false")
+	}
+}

core/health_status.go

@@ -1,11 +0,0 @@
-package core
-
-// HealthStatus is the status of Gatus
-type HealthStatus struct {
-	// Status is the state of Gatus (UP/DOWN)
-	Status string `json:"status"`
-
-	// Message is an accompanying description of why the status is as reported.
-	// If the Status is UP, no message will be provided
-	Message string `json:"message,omitempty"`
-}

core/result.go

@@ -41,6 +41,9 @@ type Result struct {
 	// CertificateExpiration is the duration before the certificate expires
 	CertificateExpiration time.Duration `json:"-"`
 
+	// DomainExpiration is the duration before the domain expires
+	DomainExpiration time.Duration `json:"-"`
+
 	// body is the response body
 	//
 	// Note that this variable is only used during the evaluation of an Endpoint's health.

go.mod

@@ -1,21 +1,22 @@
 module github.com/TwiN/gatus/v4
 
-go 1.18
+go 1.19
 
 require (
-	github.com/TwiN/g8 v1.3.0
-	github.com/TwiN/gocache/v2 v2.1.0
-	github.com/TwiN/health v1.4.0
+	github.com/TwiN/g8 v1.4.0
+	github.com/TwiN/gocache/v2 v2.2.0
+	github.com/TwiN/health v1.5.0
+	github.com/TwiN/whois v1.1.0
 	github.com/coreos/go-oidc/v3 v3.1.0
 	github.com/go-ping/ping v0.0.0-20210911151512-381826476871
 	github.com/google/uuid v1.3.0
 	github.com/gorilla/mux v1.8.0
-	github.com/lib/pq v1.10.3
+	github.com/lib/pq v1.10.7
 	github.com/miekg/dns v1.1.43
-	github.com/prometheus/client_golang v1.11.0
+	github.com/prometheus/client_golang v1.14.0
 	github.com/wcharczuk/go-chart/v2 v2.1.0
 	golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9
-	golang.org/x/oauth2 v0.0.0-20210514164344-f6687ab2804c
+	golang.org/x/oauth2 v0.0.0-20220223155221-ee480838109b
 	gopkg.in/mail.v2 v2.3.1
 	gopkg.in/yaml.v2 v2.4.0
 	modernc.org/sqlite v1.13.1
@@ -24,24 +25,26 @@ require (
 require (
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/ishidawataru/sctp v0.0.0-20210707070123-9a39160e9062
 	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 // indirect
 	github.com/mattn/go-isatty v0.0.14 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
-	github.com/prometheus/client_model v0.2.0 // indirect
-	github.com/prometheus/common v0.31.1 // indirect
-	github.com/prometheus/procfs v0.7.3 // indirect
+	github.com/prometheus/client_model v0.3.0 // indirect
+	github.com/prometheus/common v0.37.0 // indirect
+	github.com/prometheus/procfs v0.8.0 // indirect
 	github.com/remyoudompheng/bigfft v0.0.0-20200410134404-eec4a21b6bb0 // indirect
 	golang.org/x/image v0.0.0-20210628002857-a66eb6448b8d // indirect
 	golang.org/x/mod v0.5.1 // indirect
-	golang.org/x/net v0.0.0-20211209124913-491a49abca63 // indirect
-	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c // indirect
-	golang.org/x/sys v0.0.0-20211003122950-b1ebd4e1001c // indirect
+	golang.org/x/net v0.0.0-20220225172249-27dd8689420f // indirect
+	golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f // indirect
+	golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a // indirect
 	golang.org/x/tools v0.1.7 // indirect
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 	google.golang.org/appengine v1.6.6 // indirect
-	google.golang.org/protobuf v1.27.1 // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
 	gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc // indirect
 	gopkg.in/square/go-jose.v2 v2.5.1 // indirect
 	lukechampine.com/uint128 v1.1.1 // indirect

go.sum

@@ -33,12 +33,14 @@ cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
-github.com/TwiN/g8 v1.3.0 h1:mNv3R35GhDn1gEV0BKMl1oupZ1tDtOWPTHUKu+W/k3U=
-github.com/TwiN/g8 v1.3.0/go.mod h1:SiIdItS0agSUloFqdQQt/RObB2jGSq+nnE9WfFv3RIo=
-github.com/TwiN/gocache/v2 v2.1.0 h1:AJnSX7Sgz22fsO7rdXYQzMQ4zWpMjBKqk70ADeqtLDU=
-github.com/TwiN/gocache/v2 v2.1.0/go.mod h1:AKHAFZSwLLmoLm1a2siDOWmZ2RjIKqentRGfOFWkllY=
-github.com/TwiN/health v1.4.0 h1:Ts7lb4ihYDpVEbFSGAhSEZTSwuDOADnwJLFngFl4xzw=
-github.com/TwiN/health v1.4.0/go.mod h1:CSUh+ryfD2POS2vKtc/yO4IxgR58lKvQ0/8qnoPqPqs=
+github.com/TwiN/g8 v1.4.0 h1:RUk5xTtxKCdMo0GGSbBVyjtAAfi2nqVbA9E0C4u5Cxo=
+github.com/TwiN/g8 v1.4.0/go.mod h1:ECyGJsoIb99klUfvVQoS1StgRLte9yvvPigGrHdy284=
+github.com/TwiN/gocache/v2 v2.2.0 h1:M3B36KyH24BntxLrLaUb2kgTdq8DzCnfod0IekLG57w=
+github.com/TwiN/gocache/v2 v2.2.0/go.mod h1:SnUuBsrwGQeNcDG6vhkOMJnqErZM0JGjgIkuKryokYA=
+github.com/TwiN/health v1.5.0 h1:ETTtbQfUbiiIiVTSpAiNzesHQvm8qarV/8ctlZsVhwA=
+github.com/TwiN/health v1.5.0/go.mod h1:Z6TszwQPMvtSiVx1QMidVRgvVr4KZGfiwqcD7/Z+3iw=
+github.com/TwiN/whois v1.1.0 h1:lhyrC/9yIXntEnbJ+0IBy9Z5NBcreieYyamlvniwq88=
+github.com/TwiN/whois v1.1.0/go.mod h1:9WbCzYlR+r5eq9vbgJVh7A4H2uR2ct4wKEB0/QITJ/c=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
@@ -74,9 +76,11 @@ github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/log v0.1.0/go.mod h1:zbhenjAZHb184qTLMA9ZjW7ThYL0H2mk7Q6pNt4vbaY=
+github.com/go-kit/log v0.2.0/go.mod h1:NwTd00d/i8cPZ3xOwwiv2PO5MOcx78fFErGNcVmBjv0=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
 github.com/go-logfmt/logfmt v0.5.0/go.mod h1:wCYkCAKZfumFQihp8CzCvQ3paCTfi41vtzG1KdI/P7A=
+github.com/go-logfmt/logfmt v0.5.1/go.mod h1:WYhtIu8zTZfxdn5+rREduYbwxfcBr/Vr6KEVveWlfTs=
 github.com/go-ping/ping v0.0.0-20210911151512-381826476871 h1:wtjTfjwAR/BYYMJ+QOLI/3J/qGEI0fgrkZvgsEWK2/Q=
 github.com/go-ping/ping v0.0.0-20210911151512-381826476871/go.mod h1:xIFjORFzTxqIV/tDVGO4eDy/bLuSyawEeojSm3GfRGk=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
@@ -122,8 +126,8 @@ github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.3/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs=
 github.com/google/martian/v3 v3.0.0/go.mod h1:y5Zk1BBys9G+gd6Jrk0W3cC1+ELVxBWuIGO+w/tUAp0=
@@ -145,10 +149,13 @@ github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB7
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
+github.com/ishidawataru/sctp v0.0.0-20210707070123-9a39160e9062 h1:G1+wBT0dwjIrBdLy0MIG0i+E4CQxEnedHXdauJEIH6g=
+github.com/ishidawataru/sctp v0.0.0-20210707070123-9a39160e9062/go.mod h1:co9pwDoBCm1kGxawmb4sPq0cSIOOWNPT4KnHotMP1Zg=
 github.com/jpillora/backoff v1.0.0/go.mod h1:J/6gKK9jxlEcS3zixgDgUAsiuZ7yrSoa/FX5e0EB2j4=
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
 github.com/json-iterator/go v1.1.10/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
 github.com/json-iterator/go v1.1.11/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
+github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
 github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
 github.com/jstemmer/go-junit-report v0.9.1/go.mod h1:Brl9GWCQeLvo8nXZwPNNblvFj/XSXhF0NWZEnDohbsk=
 github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
@@ -164,8 +171,8 @@ github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORN
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
-github.com/lib/pq v1.10.3 h1:v9QZf2Sn6AmjXtQeFpdoq/eaNtYP6IN+7lcrygsIAtg=
-github.com/lib/pq v1.10.3/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
+github.com/lib/pq v1.10.7 h1:p7ZhMD+KsSRozJr34udlUrhboJwWAgCg34+/ZZNvZZw=
+github.com/lib/pq v1.10.7/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
 github.com/mattn/go-isatty v0.0.12/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Kysco4FUpU=
 github.com/mattn/go-isatty v0.0.14 h1:yVuAays6BHfxijgZPzw+3Zlu5yQgKGP2/hcQbHb7S9Y=
 github.com/mattn/go-isatty v0.0.14/go.mod h1:7GGIvUiUoEMVVmxf/4nioHXj79iQHKdU27kJ6hsGG94=
@@ -179,6 +186,7 @@ github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJ
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
+github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
@@ -189,24 +197,29 @@ github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZN
 github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
 github.com/prometheus/client_golang v1.0.0/go.mod h1:db9x61etRT2tGnBNRi70OPL5FsnadC4Ky3P0J6CfImo=
 github.com/prometheus/client_golang v1.7.1/go.mod h1:PY5Wy2awLA44sXw4AOSfFBetzPP4j5+D6mVACh+pe2M=
-github.com/prometheus/client_golang v1.11.0 h1:HNkLOAEQMIDv/K+04rukrLx6ch7msSRwf3/SASFAGtQ=
 github.com/prometheus/client_golang v1.11.0/go.mod h1:Z6t4BnS23TR94PD6BsDNk8yVqroYurpAkEiz0P2BEV0=
+github.com/prometheus/client_golang v1.12.1/go.mod h1:3Z9XVyYiZYEO+YQWt3RD2R3jrbd179Rt297l4aS6nDY=
+github.com/prometheus/client_golang v1.14.0 h1:nJdhIvne2eSX/XRAFV9PcvFFRbrjbcTUj0VP62TMhnw=
+github.com/prometheus/client_golang v1.14.0/go.mod h1:8vpkKitgIVNcqrRBWh1C4TIUQgYNtG/XQE4E/Zae36Y=
 github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
 github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
-github.com/prometheus/client_model v0.2.0 h1:uq5h0d+GuxiXLJLNABMgp2qUWDPiLvgCzz2dUR+/W/M=
 github.com/prometheus/client_model v0.2.0/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
+github.com/prometheus/client_model v0.3.0 h1:UBgGFHqYdG/TPFD1B1ogZywDqEkwp3fBMvqdiQ7Xew4=
+github.com/prometheus/client_model v0.3.0/go.mod h1:LDGWKZIo7rky3hgvBe+caln+Dr3dPggB5dvjtD7w9+w=
 github.com/prometheus/common v0.4.1/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y86RQel1bk4=
 github.com/prometheus/common v0.10.0/go.mod h1:Tlit/dnDKsSWFlCLTWaA1cyBgKHSMdTB80sz/V91rCo=
 github.com/prometheus/common v0.26.0/go.mod h1:M7rCNAaPfAosfx8veZJCuw84e35h3Cfd9VFqTh1DIvc=
-github.com/prometheus/common v0.31.1 h1:d18hG4PkHnNAKNMOmFuXFaiY8Us0nird/2m60uS1AMs=
-github.com/prometheus/common v0.31.1/go.mod h1:vu+V0TpY+O6vW9J44gczi3Ap/oXXR10b+M/gUGO4Hls=
+github.com/prometheus/common v0.32.1/go.mod h1:vu+V0TpY+O6vW9J44gczi3Ap/oXXR10b+M/gUGO4Hls=
+github.com/prometheus/common v0.37.0 h1:ccBbHCgIiT9uSoFY0vX8H3zsNR5eLt17/RQLUvn8pXE=
+github.com/prometheus/common v0.37.0/go.mod h1:phzohg0JFMnBEFGxTDbfu3QyL5GI8gTQJFhYO5B3mfA=
 github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
 github.com/prometheus/procfs v0.0.2/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
 github.com/prometheus/procfs v0.1.3/go.mod h1:lV6e/gmhEcM9IjHGsFOCxxuZ+z1YqCvr4OA4YeYWdaU=
 github.com/prometheus/procfs v0.6.0/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1xBZuNvfVA=
-github.com/prometheus/procfs v0.7.3 h1:4jVXhlkAyzOScmCkXBTOLRLTz8EeU+eyjrwB/EPq0VU=
 github.com/prometheus/procfs v0.7.3/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1xBZuNvfVA=
+github.com/prometheus/procfs v0.8.0 h1:ODq8ZFEaYeCaZOJlZZdJA2AbQR98dSHSM1KW/You5mo=
+github.com/prometheus/procfs v0.8.0/go.mod h1:z7EfXMXOkbkqb9IINtpCn86r/to3BnA0uaxHdg830/4=
 github.com/remyoudompheng/bigfft v0.0.0-20200410134404-eec4a21b6bb0 h1:OdAsTTz6OkFY5QxjkYwrChwuRruF69c169dPK26NUlk=
 github.com/remyoudompheng/bigfft v0.0.0-20200410134404-eec4a21b6bb0/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
@@ -306,15 +319,17 @@ golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwY
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210316092652-d523dce5a7f4/go.mod h1:RBQZq4jEuRlivfhVLdyRGr576XBO4/greRjx4P4O3yc=
 golang.org/x/net v0.0.0-20210525063256-abc453219eb5/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.0.0-20211209124913-491a49abca63 h1:iocB37TsdFuN6IBRZ+ry36wrkoV51/tl5vOWqkcPGvY=
-golang.org/x/net v0.0.0-20211209124913-491a49abca63/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20220127200216-cd36cc0744dd/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
+golang.org/x/net v0.0.0-20220225172249-27dd8689420f h1:oA4XRj0qtSt8Yo1Zms0CUlsT3KG69V2UGQWPBxujDmc=
+golang.org/x/net v0.0.0-20220225172249-27dd8689420f/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20191202225959-858c2ad4c8b6/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
-golang.org/x/oauth2 v0.0.0-20210514164344-f6687ab2804c h1:pkQiBZBvdos9qq4wBAHqlzuZHEXo07pqV06ef90u1WI=
 golang.org/x/oauth2 v0.0.0-20210514164344-f6687ab2804c/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
+golang.org/x/oauth2 v0.0.0-20220223155221-ee480838109b h1:clP8eMhB30EHdc0bd2Twtq6kgU7yl5ub2cQLSdrv1Dg=
+golang.org/x/oauth2 v0.0.0-20220223155221-ee480838109b/go.mod h1:DAh4E804XQdzx2j+YRIaUnCqCV2RuMz24cGBJ5QYIrc=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -325,8 +340,9 @@ golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f h1:Ax0t5p6N38Ga0dThY21weqDEyz2oklo4IvDkpigvkD8=
+golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -367,17 +383,22 @@ golang.org/x/sys v0.0.0-20210303074136-134d130e1a04/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210315160823-c6e025ad8005/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210603081109-ebe580a85c40/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210902050250-f475640dd07b/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20211003122950-b1ebd4e1001c h1:EyJTLQbOxvk8V6oDdD8ILR1BOs3nEJXThD6aqsiPNkM=
-golang.org/x/sys v0.0.0-20211003122950-b1ebd4e1001c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220114195835-da31bd327af9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a h1:dGzPydgVsqGcTRVwiLJ1jVbufYwmzD3LfVPLKsKg+0k=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
@@ -505,8 +526,8 @@ google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGj
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
-google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
+google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc h1:2gGKlE2+asNV9m7xrywl36YYNnBG5ZQ0r/BOOxqPpmk=
 gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc/go.mod h1:m7x9LTH6d71AHyAX77c9yqWCCa3UKHcVEj9y7hAtKDk=

jsonpath/jsonpath.go

@@ -9,21 +9,48 @@ import (
 
 // Eval is a half-baked json path implementation that needs some love
 func Eval(path string, b []byte) (string, int, error) {
+	if len(path) == 0 && !(len(b) != 0 && b[0] == '[' && b[len(b)-1] == ']') {
+		// if there's no path AND the value is not a JSON array, then there's nothing to walk
+		return string(b), len(b), nil
+	}
 	var object interface{}
-	err := json.Unmarshal(b, &object)
-	if err != nil {
-		// Try to unmarshal it into an array instead
+	if err := json.Unmarshal(b, &object); err != nil {
 		return "", 0, err
 	}
 	return walk(path, object)
 }
 
+// walk traverses the object and returns the value as a string as well as its length
 func walk(path string, object interface{}) (string, int, error) {
-	keys := strings.Split(path, ".")
+	var keys []string
+	startOfCurrentKey, bracketDepth := 0, 0
+	for i := range path {
+		if path[i] == '[' {
+			bracketDepth++
+		} else if path[i] == ']' {
+			bracketDepth--
+		}
+		// If we encounter a dot, we've reached the end of a key unless we're inside a bracket
+		if path[i] == '.' && bracketDepth == 0 {
+			keys = append(keys, path[startOfCurrentKey:i])
+			startOfCurrentKey = i + 1
+		}
+	}
+	if startOfCurrentKey <= len(path) {
+		keys = append(keys, path[startOfCurrentKey:])
+	}
 	currentKey := keys[0]
 	switch value := extractValue(currentKey, object).(type) {
 	case map[string]interface{}:
-		return walk(strings.Replace(path, fmt.Sprintf("%s.", currentKey), "", 1), value)
+		newPath := strings.Replace(path, fmt.Sprintf("%s.", currentKey), "", 1)
+		if path == newPath {
+			// If the path hasn't changed, it means we're at the end of the path
+			// So we'll treat it as a string by re-marshaling it to JSON since it's a map.
+			// Note that the output JSON will be minified.
+			b, err := json.Marshal(value)
+			return string(b), len(b), err
+		}
+		return walk(newPath, value)
 	case string:
 		if len(keys) > 1 {
 			return "", 0, fmt.Errorf("couldn't walk through '%s', because '%s' was a string instead of an object", keys[1], currentKey)
@@ -32,7 +59,8 @@ func walk(path string, object interface{}) (string, int, error) {
 	case []interface{}:
 		return fmt.Sprintf("%v", value), len(value), nil
 	case interface{}:
-		return fmt.Sprintf("%v", value), 1, nil
+		newValue := fmt.Sprintf("%v", value)
+		return newValue, len(newValue), nil
 	default:
 		return "", 0, fmt.Errorf("couldn't walk through '%s' because type was '%T', but expected 'map[string]interface{}'", currentKey, value)
 	}
@@ -41,37 +69,56 @@ func walk(path string, object interface{}) (string, int, error) {
 func extractValue(currentKey string, value interface{}) interface{} {
 	// Check if the current key ends with [#]
 	if strings.HasSuffix(currentKey, "]") && strings.Contains(currentKey, "[") {
-		tmp := strings.SplitN(currentKey, "[", 3)
-		arrayIndex, err := strconv.Atoi(strings.Replace(tmp[1], "]", "", 1))
+		var isNestedArray bool
+		var index string
+		startOfBracket, endOfBracket, bracketDepth := 0, 0, 0
+		for i := range currentKey {
+			if currentKey[i] == '[' {
+				startOfBracket = i
+				bracketDepth++
+			} else if currentKey[i] == ']' && bracketDepth == 1 {
+				bracketDepth--
+				endOfBracket = i
+				index = currentKey[startOfBracket+1 : i]
+				if len(currentKey) > i+1 && currentKey[i+1] == '[' {
+					isNestedArray = true // there's more keys.
+				}
+				break
+			}
+		}
+		arrayIndex, err := strconv.Atoi(index)
 		if err != nil {
 			return nil
 		}
-		currentKey := tmp[0]
-		// if currentKey contains only an index (i.e. [0] or 0)
-		if len(currentKey) == 0 {
+		currentKeyWithoutIndex := currentKey[:startOfBracket]
+		// if currentKeyWithoutIndex contains only an index (i.e. [0] or 0)
+		if len(currentKeyWithoutIndex) == 0 {
 			array := value.([]interface{})
 			if len(array) > arrayIndex {
-				if len(tmp) > 2 {
-					// Nested array? Go deeper.
-					return extractValue(fmt.Sprintf("%s[%s", currentKey, tmp[2]), array[arrayIndex])
+				if isNestedArray {
+					return extractValue(currentKey[endOfBracket+1:], array[arrayIndex])
 				}
 				return array[arrayIndex]
 			}
 			return nil
 		}
-		if value == nil || value.(map[string]interface{})[currentKey] == nil {
+		if value == nil || value.(map[string]interface{})[currentKeyWithoutIndex] == nil {
 			return nil
 		}
-		// if currentKey contains both a key and an index (i.e. data[0])
-		array := value.(map[string]interface{})[currentKey].([]interface{})
+		// if currentKeyWithoutIndex contains both a key and an index (i.e. data[0])
+		array := value.(map[string]interface{})[currentKeyWithoutIndex].([]interface{})
 		if len(array) > arrayIndex {
-			if len(tmp) > 2 {
-				// Nested array? Go deeper.
-				return extractValue(fmt.Sprintf("[%s", tmp[2]), array[arrayIndex])
+			if isNestedArray {
+				return extractValue(currentKey[endOfBracket+1:], array[arrayIndex])
 			}
 			return array[arrayIndex]
 		}
 		return nil
 	}
+	if valueAsSlice, ok := value.([]interface{}); ok {
+		// If the type is a slice, return it
+		return valueAsSlice
+	}
+	// otherwise, it's a map
 	return value.(map[string]interface{})[currentKey]
 }

jsonpath/jsonpath_bench_test.go

@@ -0,0 +1,11 @@
+package jsonpath
+
+import "testing"
+
+func BenchmarkEval(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		Eval("ids[0]", []byte(`{"ids": [1, 2]}`))
+		Eval("long.simple.walk", []byte(`{"long": {"simple": {"walk": "value"}}}`))
+		Eval("data[0].apps[1].name", []byte(`{"data": [{"apps": [{"name":"app1"}, {"name":"app2"}, {"name":"app3"}]}]}`))
+	}
+}

jsonpath/jsonpath_test.go

@@ -47,7 +47,7 @@ func TestEval(t *testing.T) {
 			ExpectedError:        false,
 		},
 		{
-			Name:                 "array-of-maps",
+			Name:                 "array-of-objects",
 			Path:                 "ids[1].id",
 			Data:                 `{"ids": [{"id": 1}, {"id": 2}]}`,
 			ExpectedOutput:       "2",
@@ -62,6 +62,14 @@ func TestEval(t *testing.T) {
 			ExpectedOutputLength: 1,
 			ExpectedError:        false,
 		},
+		{
+			Name:                 "array-of-values-with-no-path",
+			Path:                 "",
+			Data:                 `[1, 2]`,
+			ExpectedOutput:       "[1 2]", // the output is an array
+			ExpectedOutputLength: 2,
+			ExpectedError:        false,
+		},
 		{
 			Name:                 "array-of-values-and-invalid-index",
 			Path:                 "ids[wat]",
@@ -79,7 +87,15 @@ func TestEval(t *testing.T) {
 			ExpectedError:        false,
 		},
 		{
-			Name:                 "array-of-maps-at-root",
+			Name:                 "array-of-objects-at-root",
+			Path:                 "[0]",
+			Data:                 `[{"id": 1}, {"id": 2}]`,
+			ExpectedOutput:       `{"id":1}`,
+			ExpectedOutputLength: 8,
+			ExpectedError:        false,
+		},
+		{
+			Name:                 "array-of-objects-with-int-at-root",
 			Path:                 "[0].id",
 			Data:                 `[{"id": 1}, {"id": 2}]`,
 			ExpectedOutput:       "1",
@@ -87,7 +103,7 @@ func TestEval(t *testing.T) {
 			ExpectedError:        false,
 		},
 		{
-			Name:                 "array-of-maps-at-root-and-invalid-index",
+			Name:                 "array-of-objects-at-root-and-invalid-index",
 			Path:                 "[5].id",
 			Data:                 `[{"id": 1}, {"id": 2}]`,
 			ExpectedOutput:       "",
@@ -111,13 +127,29 @@ func TestEval(t *testing.T) {
 			ExpectedError:        false,
 		},
 		{
-			Name:                 "map-of-nested-arrays",
+			Name:                 "object-with-nested-arrays",
 			Path:                 "data[1][1]",
 			Data:                 `{"data": [["a", "b", "c"], ["d", "eeeee", "f"]]}`,
 			ExpectedOutput:       "eeeee",
 			ExpectedOutputLength: 5,
 			ExpectedError:        false,
 		},
+		{
+			Name:                 "object-with-arrays-of-objects",
+			Path:                 "data[0].apps[1].name",
+			Data:                 `{"data": [{"apps": [{"name":"app1"}, {"name":"app2"}, {"name":"app3"}]}]}`,
+			ExpectedOutput:       "app2",
+			ExpectedOutputLength: 4,
+			ExpectedError:        false,
+		},
+		{
+			Name:                 "object-with-arrays-of-objects-with-missing-element",
+			Path:                 "data[0].apps[1].name",
+			Data:                 `{"data": [{"apps": []}]}`,
+			ExpectedOutput:       "",
+			ExpectedOutputLength: 0,
+			ExpectedError:        true,
+		},
 		{
 			Name:                 "partially-invalid-path-issue122",
 			Path:                 "data.name.invalid",

metrics/metrics_test.go

@@ -75,7 +75,7 @@ gatus_results_total{group="http-ep-group",key="http-ep-group_http-ep-name",name=
 	if err != nil {
 		t.Errorf("Expected no errors but got: %v", err)
 	}
-	dnsEndpoint := &core.Endpoint{Name: "dns-ep-name", Group: "dns-ep-group", URL: "1.1.1.1", DNS: &core.DNS{
+	dnsEndpoint := &core.Endpoint{Name: "dns-ep-name", Group: "dns-ep-group", URL: "8.8.8.8", DNS: &core.DNS{
 		QueryType: "A",
 		QueryName: "example.com.",
 	}}

storage/store/sql/specific_postgres.go

@@ -5,8 +5,8 @@ func (s *Store) createPostgresSchema() error {
 		CREATE TABLE IF NOT EXISTS endpoints (
 			endpoint_id    BIGSERIAL PRIMARY KEY,
 			endpoint_key   TEXT UNIQUE,
-			endpoint_name  TEXT,
-			endpoint_group TEXT,
+			endpoint_name  TEXT NOT NULL,
+			endpoint_group TEXT NOT NULL,
 			UNIQUE(endpoint_name, endpoint_group)
 		)
 	`)
@@ -16,9 +16,9 @@ func (s *Store) createPostgresSchema() error {
 	_, err = s.db.Exec(`
 		CREATE TABLE IF NOT EXISTS endpoint_events (
 			endpoint_event_id  BIGSERIAL PRIMARY KEY,
-			endpoint_id        INTEGER REFERENCES endpoints(endpoint_id) ON DELETE CASCADE,
-			event_type         TEXT,
-			event_timestamp    TIMESTAMP
+			endpoint_id        INTEGER   NOT NULL REFERENCES endpoints(endpoint_id) ON DELETE CASCADE,
+			event_type         TEXT      NOT NULL,
+			event_timestamp    TIMESTAMP NOT NULL
 		)
 	`)
 	if err != nil {
@@ -27,17 +27,18 @@ func (s *Store) createPostgresSchema() error {
 	_, err = s.db.Exec(`
 		CREATE TABLE IF NOT EXISTS endpoint_results (
 			endpoint_result_id     BIGSERIAL PRIMARY KEY,
-			endpoint_id            BIGINT REFERENCES endpoints(endpoint_id) ON DELETE CASCADE,
-			success                BOOLEAN,
-			errors                 TEXT,
-			connected              BOOLEAN,
-			status                 BIGINT,
-			dns_rcode              TEXT,
-			certificate_expiration BIGINT,
-			hostname               TEXT,
-			ip                     TEXT,
-			duration               BIGINT,
-			timestamp              TIMESTAMP
+			endpoint_id            BIGINT    NOT NULL REFERENCES endpoints(endpoint_id) ON DELETE CASCADE,
+			success                BOOLEAN   NOT NULL,
+			errors                 TEXT      NOT NULL,
+			connected              BOOLEAN   NOT NULL,
+			status                 BIGINT    NOT NULL,
+			dns_rcode              TEXT      NOT NULL,
+			certificate_expiration BIGINT    NOT NULL,
+			domain_expiration      BIGINT    NOT NULL,
+			hostname               TEXT      NOT NULL,
+			ip                     TEXT      NOT NULL,
+			duration               BIGINT    NOT NULL,
+			timestamp              TIMESTAMP NOT NULL
 		)
 	`)
 	if err != nil {
@@ -46,9 +47,9 @@ func (s *Store) createPostgresSchema() error {
 	_, err = s.db.Exec(`
 		CREATE TABLE IF NOT EXISTS endpoint_result_conditions (
 			endpoint_result_condition_id  BIGSERIAL PRIMARY KEY,
-			endpoint_result_id            BIGINT REFERENCES endpoint_results(endpoint_result_id) ON DELETE CASCADE,
-			condition                     TEXT,
-			success                       BOOLEAN
+			endpoint_result_id            BIGINT  NOT NULL REFERENCES endpoint_results(endpoint_result_id) ON DELETE CASCADE,
+			condition                     TEXT    NOT NULL,
+			success                       BOOLEAN NOT NULL
 		)
 	`)
 	if err != nil {
@@ -57,13 +58,15 @@ func (s *Store) createPostgresSchema() error {
 	_, err = s.db.Exec(`
 		CREATE TABLE IF NOT EXISTS endpoint_uptimes (
 			endpoint_uptime_id     BIGSERIAL PRIMARY KEY,
-			endpoint_id            BIGINT REFERENCES endpoints(endpoint_id) ON DELETE CASCADE,
-			hour_unix_timestamp    BIGINT,
-			total_executions       BIGINT,
-			successful_executions  BIGINT,
-			total_response_time    BIGINT,
+			endpoint_id            BIGINT NOT NULL REFERENCES endpoints(endpoint_id) ON DELETE CASCADE,
+			hour_unix_timestamp    BIGINT NOT NULL,
+			total_executions       BIGINT NOT NULL,
+			successful_executions  BIGINT NOT NULL,
+			total_response_time    BIGINT NOT NULL,
 			UNIQUE(endpoint_id, hour_unix_timestamp)
 		)
 	`)
+	// Silent table modifications
+	_, _ = s.db.Exec(`ALTER TABLE endpoint_results ADD IF NOT EXISTS domain_expiration BIGINT NOT NULL DEFAULT 0`)
 	return err
 }

storage/store/sql/specific_sqlite.go

@@ -5,8 +5,8 @@ func (s *Store) createSQLiteSchema() error {
 		CREATE TABLE IF NOT EXISTS endpoints (
 			endpoint_id    INTEGER PRIMARY KEY,
 			endpoint_key   TEXT UNIQUE,
-			endpoint_name  TEXT,
-			endpoint_group TEXT,
+			endpoint_name  TEXT NOT NULL,
+			endpoint_group TEXT NOT NULL,
 			UNIQUE(endpoint_name, endpoint_group)
 		)
 	`)
@@ -16,9 +16,9 @@ func (s *Store) createSQLiteSchema() error {
 	_, err = s.db.Exec(`
 		CREATE TABLE IF NOT EXISTS endpoint_events (
 			endpoint_event_id  INTEGER PRIMARY KEY,
-			endpoint_id        INTEGER REFERENCES endpoints(endpoint_id) ON DELETE CASCADE,
-			event_type         TEXT,
-			event_timestamp    TIMESTAMP
+			endpoint_id        INTEGER   NOT NULL REFERENCES endpoints(endpoint_id) ON DELETE CASCADE,
+			event_type         TEXT      NOT NULL,
+			event_timestamp    TIMESTAMP NOT NULL
 		)
 	`)
 	if err != nil {
@@ -27,17 +27,18 @@ func (s *Store) createSQLiteSchema() error {
 	_, err = s.db.Exec(`
 		CREATE TABLE IF NOT EXISTS endpoint_results (
 			endpoint_result_id     INTEGER PRIMARY KEY,
-			endpoint_id            INTEGER REFERENCES endpoints(endpoint_id) ON DELETE CASCADE,
-			success                INTEGER,
-			errors                 TEXT,
-			connected              INTEGER,
-			status                 INTEGER,
-			dns_rcode              TEXT,
-			certificate_expiration INTEGER,
-			hostname               TEXT,
-			ip                     TEXT,
-			duration               INTEGER,
-			timestamp              TIMESTAMP
+			endpoint_id            INTEGER   NOT NULL REFERENCES endpoints(endpoint_id) ON DELETE CASCADE,
+			success                INTEGER   NOT NULL,
+			errors                 TEXT      NOT NULL,
+			connected              INTEGER   NOT NULL,
+			status                 INTEGER   NOT NULL,
+			dns_rcode              TEXT      NOT NULL,
+			certificate_expiration INTEGER   NOT NULL,
+		    domain_expiration      INTEGER   NOT NULL,
+			hostname               TEXT      NOT NULL,
+			ip                     TEXT      NOT NULL,
+			duration               INTEGER   NOT NULL,
+			timestamp              TIMESTAMP NOT NULL
 		)
 	`)
 	if err != nil {
@@ -46,9 +47,9 @@ func (s *Store) createSQLiteSchema() error {
 	_, err = s.db.Exec(`
 		CREATE TABLE IF NOT EXISTS endpoint_result_conditions (
 			endpoint_result_condition_id  INTEGER PRIMARY KEY,
-			endpoint_result_id            INTEGER REFERENCES endpoint_results(endpoint_result_id) ON DELETE CASCADE,
-			condition                     TEXT,
-			success                       INTEGER
+			endpoint_result_id            INTEGER NOT NULL REFERENCES endpoint_results(endpoint_result_id) ON DELETE CASCADE,
+			condition                     TEXT    NOT NULL,
+			success                       INTEGER NOT NULL
 		)
 	`)
 	if err != nil {
@@ -57,13 +58,15 @@ func (s *Store) createSQLiteSchema() error {
 	_, err = s.db.Exec(`
 		CREATE TABLE IF NOT EXISTS endpoint_uptimes (
 			endpoint_uptime_id    INTEGER PRIMARY KEY,
-			endpoint_id           INTEGER REFERENCES endpoints(endpoint_id) ON DELETE CASCADE,
-			hour_unix_timestamp   INTEGER,
-			total_executions      INTEGER,
-			successful_executions INTEGER,
-			total_response_time   INTEGER,
+			endpoint_id           INTEGER NOT NULL REFERENCES endpoints(endpoint_id) ON DELETE CASCADE,
+			hour_unix_timestamp   INTEGER NOT NULL,
+			total_executions      INTEGER NOT NULL,
+			successful_executions INTEGER NOT NULL,
+			total_response_time   INTEGER NOT NULL,
 			UNIQUE(endpoint_id, hour_unix_timestamp)
 		)
 	`)
+	// Silent table modifications TODO: Remove this
+	_, _ = s.db.Exec(`ALTER TABLE endpoint_results ADD domain_expiration INTEGER NOT NULL DEFAULT 0`)
 	return err
 }

storage/store/sql/sql.go

@@ -439,8 +439,8 @@ func (s *Store) insertEndpointResult(tx *sql.Tx, endpointID int64, result *core.
 	var endpointResultID int64
 	err := tx.QueryRow(
 		`
-			INSERT INTO endpoint_results (endpoint_id, success, errors, connected, status, dns_rcode, certificate_expiration, hostname, ip, duration, timestamp)
-			VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11)
+			INSERT INTO endpoint_results (endpoint_id, success, errors, connected, status, dns_rcode, certificate_expiration, domain_expiration, hostname, ip, duration, timestamp)
+			VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12)
 			RETURNING endpoint_result_id
 		`,
 		endpointID,
@@ -450,6 +450,7 @@ func (s *Store) insertEndpointResult(tx *sql.Tx, endpointID int64, result *core.
 		result.HTTPStatus,
 		result.DNSRCode,
 		result.CertificateExpiration,
+		result.DomainExpiration,
 		result.Hostname,
 		result.IP,
 		result.Duration,
@@ -590,7 +591,7 @@ func (s *Store) getEndpointEventsByEndpointID(tx *sql.Tx, endpointID int64, page
 func (s *Store) getEndpointResultsByEndpointID(tx *sql.Tx, endpointID int64, page, pageSize int) (results []*core.Result, err error) {
 	rows, err := tx.Query(
 		`
-			SELECT endpoint_result_id, success, errors, connected, status, dns_rcode, certificate_expiration, hostname, ip, duration, timestamp
+			SELECT endpoint_result_id, success, errors, connected, status, dns_rcode, certificate_expiration, domain_expiration, hostname, ip, duration, timestamp
 			FROM endpoint_results
 			WHERE endpoint_id = $1
 			ORDER BY endpoint_result_id DESC -- Normally, we'd sort by timestamp, but sorting by endpoint_result_id is faster
@@ -608,7 +609,11 @@ func (s *Store) getEndpointResultsByEndpointID(tx *sql.Tx, endpointID int64, pag
 		result := &core.Result{}
 		var id int64
 		var joinedErrors string
-		_ = rows.Scan(&id, &result.Success, &joinedErrors, &result.Connected, &result.HTTPStatus, &result.DNSRCode, &result.CertificateExpiration, &result.Hostname, &result.IP, &result.Duration, &result.Timestamp)
+		err = rows.Scan(&id, &result.Success, &joinedErrors, &result.Connected, &result.HTTPStatus, &result.DNSRCode, &result.CertificateExpiration, &result.DomainExpiration, &result.Hostname, &result.IP, &result.Duration, &result.Timestamp)
+		if err != nil {
+			log.Printf("[sql][getEndpointResultsByEndpointID] Silently failed to retrieve endpoint result for endpointID=%d: %s", endpointID, err.Error())
+			err = nil
+		}
 		if len(joinedErrors) != 0 {
 			result.Errors = strings.Split(joinedErrors, arraySeparator)
 		}
@@ -848,16 +853,16 @@ func extractKeyAndParamsFromCacheKey(cacheKey string) (string, *paging.EndpointS
 	params := &paging.EndpointStatusParams{}
 	var err error
 	if params.EventsPage, err = strconv.Atoi(parts[len(parts)-4]); err != nil {
-		return "", nil, fmt.Errorf("invalid cache key: %s", err.Error())
+		return "", nil, fmt.Errorf("invalid cache key: %w", err)
 	}
 	if params.EventsPageSize, err = strconv.Atoi(parts[len(parts)-3]); err != nil {
-		return "", nil, fmt.Errorf("invalid cache key: %s", err.Error())
+		return "", nil, fmt.Errorf("invalid cache key: %w", err)
 	}
 	if params.ResultsPage, err = strconv.Atoi(parts[len(parts)-2]); err != nil {
-		return "", nil, fmt.Errorf("invalid cache key: %s", err.Error())
+		return "", nil, fmt.Errorf("invalid cache key: %w", err)
 	}
 	if params.ResultsPageSize, err = strconv.Atoi(parts[len(parts)-1]); err != nil {
-		return "", nil, fmt.Errorf("invalid cache key: %s", err.Error())
+		return "", nil, fmt.Errorf("invalid cache key: %w", err)
 	}
 	return strings.Join(parts[:len(parts)-4], "-"), params, nil
 }

vendor/github.com/TwiN/g8/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2022 TwiN
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

vendor/github.com/TwiN/g8/LICENSE.md

@@ -1,9 +0,0 @@
-MIT License
-
-Copyright (c) 2021 TwiN
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

vendor/github.com/TwiN/g8/README.md

@@ -1,6 +1,6 @@
 # g8
 
-![build](https://github.com/TwiN/g8/workflows/build/badge.svg?branch=master) 
+![test](https://github.com/TwiN/g8/workflows/test/badge.svg?branch=master) 
 [![Go Report Card](https://goreportcard.com/badge/github.com/TwiN/g8)](https://goreportcard.com/report/github.com/TwiN/g8)
 [![codecov](https://codecov.io/gh/TwiN/g8/branch/master/graph/badge.svg)](https://codecov.io/gh/TwiN/g8)
 [![Go version](https://img.shields.io/github/go-mod/go-version/TwiN/g8.svg)](https://github.com/TwiN/g8)
@@ -177,13 +177,42 @@ have the `backup` permission:
 router.Handle("/backup", gate.ProtectWithPermissions(&testHandler{}, []string{"read", "backup"}))
 ```
 
+If you're using an HTTP library that supports middlewares like [mux](https://github.com/gorilla/mux), you can protect 
+an entire group of handlers instead using `gate.Protect` or `gate.PermissionMiddleware()`:
+```go
+router := mux.NewRouter()
+
+userRouter := router.PathPrefix("/").Subrouter()
+userRouter.Use(gate.Protect)
+userRouter.HandleFunc("/api/v1/users/me", getUserProfile).Methods("GET")
+userRouter.HandleFunc("/api/v1/users/me/friends", getUserFriends).Methods("GET")
+userRouter.HandleFunc("/api/v1/users/me/email", updateUserEmail).Methods("PATCH")
+
+adminRouter := router.PathPrefix("/").Subrouter()
+adminRouter.Use(gate.PermissionMiddleware("admin"))
+adminRouter.HandleFunc("/api/v1/users/{id}/ban", banUserByID).Methods("POST")
+adminRouter.HandleFunc("/api/v1/users/{id}/delete", deleteUserByID).Methods("DELETE")
+```
+
+
 ## Rate limiting
 To add a rate limit of 100 requests per second:
-```
+```go
 gate := g8.New().WithRateLimit(100)
 ```
 
-## Special use cases
+
+## Accessing the token from the protected handlers
+If you need to access the token from the handlers you are protecting with g8, you can retrieve it from the
+request context by using the key `g8.TokenContextKey`:
+```go
+http.Handle("/handle", gate.ProtectFunc(func(w http.ResponseWriter, r *http.Request) {
+    token, _ := r.Context().Value(g8.TokenContextKey).(string)
+    // ...
+}))
+```
+
+## Examples
 ### Protecting a handler using session cookie
 If you want to only allow authenticated users to access a handler, you can use a custom token extractor function 
 combined with a client provider.
@@ -236,3 +265,23 @@ http.Handle("/handle", gate.ProtectFunc(func(w http.ResponseWriter, r *http.Requ
     // ...
 }))
 ```
+
+### Using a custom header
+The logic is the same as the example above:
+```go
+customTokenExtractorFunc := func(request *http.Request) string {
+    return request.Header.Get("X-API-Token")
+}
+
+clientProvider := g8.NewClientProvider(func(token string) *g8.Client {
+    // We'll assume that the following function calls your database and returns a struct "User" that 
+    // has the user's token as well as the permissions granted to said user
+    user := database.GetUserByToken(token)
+    if user != nil {
+        return g8.NewClient(user.Token).WithPermissions(user.Permissions)
+    }
+    return nil
+})
+authorizationService := g8.NewAuthorizationService().WithClientProvider(clientProvider)
+gate := g8.New().WithAuthorizationService(authorizationService).WithCustomTokenExtractor(customTokenExtractorFunc)
+```

vendor/github.com/TwiN/g8/gate.go

@@ -66,15 +66,16 @@ func (gate *Gate) WithCustomUnauthorizedResponseBody(unauthorizedResponseBody []
 // If a custom token extractor is not specified, the token will be extracted from the Authorization header.
 //
 // For instance, if you're using a session cookie, you can extract the token from the cookie like so:
-//     	authorizationService := g8.NewAuthorizationService()
-//     	customTokenExtractorFunc := func(request *http.Request) string {
-//     		sessionCookie, err := request.Cookie("session")
-//     		if err != nil {
-//     			return ""
-//     		}
-//     		return sessionCookie.Value
-//     	}
-//     	gate := g8.New().WithAuthorizationService(authorizationService).WithCustomTokenExtractor(customTokenExtractorFunc)
+//
+//	authorizationService := g8.NewAuthorizationService()
+//	customTokenExtractorFunc := func(request *http.Request) string {
+//		sessionCookie, err := request.Cookie("session")
+//		if err != nil {
+//			return ""
+//		}
+//		return sessionCookie.Value
+//	}
+//	gate := g8.New().WithAuthorizationService(authorizationService).WithCustomTokenExtractor(customTokenExtractorFunc)
 //
 // You would normally use this with a client provider that matches whatever need you have.
 // For example, if you're using a session cookie, your client provider would retrieve the user from the session ID
@@ -90,8 +91,8 @@ func (gate *Gate) WithCustomTokenExtractor(customTokenExtractorFunc func(request
 // WithRateLimit adds rate limiting to the Gate
 //
 // If you just want to use a gate for rate limiting purposes:
-//    gate := g8.New().WithRateLimit(50)
 //
+//	gate := g8.New().WithRateLimit(50)
 func (gate *Gate) WithRateLimit(maximumRequestsPerSecond int) *Gate {
 	gate.rateLimiter = NewRateLimiter(maximumRequestsPerSecond)
 	return gate
@@ -102,12 +103,13 @@ func (gate *Gate) WithRateLimit(maximumRequestsPerSecond int) *Gate {
 // or lack thereof.
 //
 // Example:
-//    gate := g8.New().WithAuthorizationService(g8.NewAuthorizationService().WithToken("token"))
-//    router := http.NewServeMux()
-//    // Without protection
-//    router.Handle("/handle", yourHandler)
-//    // With protection
-//    router.Handle("/handle", gate.Protect(yourHandler))
+//
+//	gate := g8.New().WithAuthorizationService(g8.NewAuthorizationService().WithToken("token"))
+//	router := http.NewServeMux()
+//	// Without protection
+//	router.Handle("/handle", yourHandler)
+//	// With protection
+//	router.Handle("/handle", gate.Protect(yourHandler))
 //
 // The token extracted from the request is passed to the handlerFunc request context under the key TokenContextKey
 func (gate *Gate) Protect(handler http.Handler) http.Handler {
@@ -118,12 +120,13 @@ func (gate *Gate) Protect(handler http.Handler) http.Handler {
 // as well as a slice of permissions that must be met.
 //
 // Example:
-//    gate := g8.New().WithAuthorizationService(g8.NewAuthorizationService().WithClient(g8.NewClient("token").WithPermission("admin")))
-//    router := http.NewServeMux()
-//    // Without protection
-//    router.Handle("/handle", yourHandler)
-//    // With protection
-//    router.Handle("/handle", gate.ProtectWithPermissions(yourHandler, []string{"admin"}))
+//
+//	gate := g8.New().WithAuthorizationService(g8.NewAuthorizationService().WithClient(g8.NewClient("token").WithPermission("ADMIN")))
+//	router := http.NewServeMux()
+//	// Without protection
+//	router.Handle("/handle", yourHandler)
+//	// With protection
+//	router.Handle("/handle", gate.ProtectWithPermissions(yourHandler, []string{"admin"}))
 //
 // The token extracted from the request is passed to the handlerFunc request context under the key TokenContextKey
 func (gate *Gate) ProtectWithPermissions(handler http.Handler, permissions []string) http.Handler {
@@ -147,12 +150,13 @@ func (gate *Gate) ProtectWithPermission(handler http.Handler, permission string)
 // permissions or lack thereof.
 //
 // Example:
-//    gate := g8.New().WithAuthorizationService(g8.NewAuthorizationService().WithToken("token"))
-//    router := http.NewServeMux()
-//    // Without protection
-//    router.HandleFunc("/handle", yourHandlerFunc)
-//    // With protection
-//    router.HandleFunc("/handle", gate.ProtectFunc(yourHandlerFunc))
+//
+//	gate := g8.New().WithAuthorizationService(g8.NewAuthorizationService().WithToken("token"))
+//	router := http.NewServeMux()
+//	// Without protection
+//	router.HandleFunc("/handle", yourHandlerFunc)
+//	// With protection
+//	router.HandleFunc("/handle", gate.ProtectFunc(yourHandlerFunc))
 //
 // The token extracted from the request is passed to the handlerFunc request context under the key TokenContextKey
 func (gate *Gate) ProtectFunc(handlerFunc http.HandlerFunc) http.HandlerFunc {
@@ -163,12 +167,13 @@ func (gate *Gate) ProtectFunc(handlerFunc http.HandlerFunc) http.HandlerFunc {
 // token as well as a slice of permissions that must be met.
 //
 // Example:
-//    gate := g8.New().WithAuthorizationService(g8.NewAuthorizationService().WithClient(g8.NewClient("token").WithPermission("admin")))
-//    router := http.NewServeMux()
-//    // Without protection
-//    router.HandleFunc("/handle", yourHandlerFunc)
-//    // With protection
-//    router.HandleFunc("/handle", gate.ProtectFuncWithPermissions(yourHandlerFunc, []string{"admin"}))
+//
+//	gate := g8.New().WithAuthorizationService(g8.NewAuthorizationService().WithClient(g8.NewClient("token").WithPermission("admin")))
+//	router := http.NewServeMux()
+//	// Without protection
+//	router.HandleFunc("/handle", yourHandlerFunc)
+//	// With protection
+//	router.HandleFunc("/handle", gate.ProtectFuncWithPermissions(yourHandlerFunc, []string{"admin"}))
 //
 // The token extracted from the request is passed to the handlerFunc request context under the key TokenContextKey
 func (gate *Gate) ProtectFuncWithPermissions(handlerFunc http.HandlerFunc, permissions []string) http.HandlerFunc {
@@ -215,3 +220,19 @@ func (gate *Gate) ExtractTokenFromRequest(request *http.Request) string {
 	}
 	return strings.TrimPrefix(request.Header.Get(AuthorizationHeader), "Bearer ")
 }
+
+// PermissionMiddleware is a middleware that behaves like ProtectWithPermission, but it is meant to be used
+// as a middleware for libraries that support such a feature.
+//
+// For instance, if you are using github.com/gorilla/mux, you can use PermissionMiddleware like so:
+//
+//	router := mux.NewRouter()
+//	router.Use(gate.PermissionMiddleware("admin"))
+//	router.Handle("/admin/handle", adminHandler)
+//
+// If you do not want to protect a router with a specific permission, you can use Gate.Protect instead.
+func (gate *Gate) PermissionMiddleware(permissions ...string) func(http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return gate.ProtectWithPermissions(next, permissions)
+	}
+}

vendor/github.com/TwiN/gocache/v2/README.md

@@ -70,12 +70,14 @@ cache.StartJanitor()
 | WithMaxSize                       | Sets the max size of the cache. `gocache.NoMaxSize` means there is no limit. If not set, the default max size is `gocache.DefaultMaxSize`.                                                                                                                         |
 | WithMaxMemoryUsage                | Sets the max memory usage of the cache. `gocache.NoMaxMemoryUsage` means there is no limit. The default behavior is to not evict based on memory usage.                                                                                                            |
 | WithEvictionPolicy                | Sets the eviction algorithm to be used when the cache reaches the max size. If not set, the default eviction policy is `gocache.FirstInFirstOut` (FIFO).                                                                                                           |
+| WithDefaultTTL                    | Sets the default TTL for each entry.                                                                                                                                                                                                                               |
 | WithForceNilInterfaceOnNilPointer | Configures whether values with a nil pointer passed to write functions should be forcefully set to nil. Defaults to true.                                                                                                                                          |
 | StartJanitor                      | Starts the janitor, which is in charge of deleting expired cache entries in the background.                                                                                                                                                                        |
 | StopJanitor                       | Stops the janitor.                                                                                                                                                                                                                                                 |
-| Set                               | Same as `SetWithTTL`, but with no expiration (`gocache.NoExpiration`)                                                                                                                                                                                              |
-| SetAll                            | Same as `Set`, but in bulk                                                                                                                                                                                                                                         |
+| Set                               | Same as `SetWithTTL`, but using the default TTL (which is `gocache.NoExpiration`, unless configured otherwise).                                                                                                                                                    |
 | SetWithTTL                        | Creates or updates a cache entry with the given key, value and expiration time. If the max size after the aforementioned operation is above the configured max size, the tail will be evicted. Depending on the eviction policy, the tail is defined as the oldest |
+| SetAll                            | Same as `Set`, but in bulk.                                                                                                                                                                                                                                        |
+| SetAllWithTTL                     | Same as `SetWithTTL`, but in bulk.                                                                                                                                                                                                                                 |
 | Get                               | Gets a cache entry by its key.                                                                                                                                                                                                                                     |
 | GetByKeys                         | Gets a map of entries by their keys. The resulting map will contain all keys, even if some of the keys in the slice passed as parameter were not present in the cache.                                                                                             |
 | GetAll                            | Gets all cache entries.                                                                                                                                                                                                                                            |
@@ -131,7 +133,7 @@ func main() {
 
     cache.Set("key", "value")
     cache.SetWithTTL("key-with-ttl", "value", 60*time.Minute)
-    cache.SetAll(map[string]interface{}{"k1": "v1", "k2": "v2", "k3": "v3"})
+    cache.SetAll(map[string]any{"k1": "v1", "k2": "v2", "k3": "v3"})
 
     fmt.Println("[Count] Cache size:", cache.Count())
 
@@ -247,7 +249,7 @@ but if you're looking into using a library like gocache, odds are, you want more
 
 ### Results
 | key    | value    |
-|:------ |:-------- |
+|:-------|:---------|
 | goos   | windows  |
 | goarch | amd64    |
 | cpu    | i7-9700K |
@@ -255,66 +257,54 @@ but if you're looking into using a library like gocache, odds are, you want more
 
 ```
 // Normal map
-BenchmarkMap_Get
-BenchmarkMap_Get-8                                                              46087372  26.7 ns/op
-BenchmarkMap_Set                                                                   
-BenchmarkMap_Set/small_value-8                                                   3841911   389 ns/op
-BenchmarkMap_Set/medium_value-8                                                  3887074   391 ns/op
-BenchmarkMap_Set/large_value-8                                                   3921956   393 ns/op
-// Gocache                                                                         
-BenchmarkCache_Get                                                                 
-BenchmarkCache_Get/FirstInFirstOut-8                                            27273036  46.4 ns/op
-BenchmarkCache_Get/LeastRecentlyUsed-8                                          26648248  46.3 ns/op
-BenchmarkCache_Set                                                              
-BenchmarkCache_Set/FirstInFirstOut_small_value-8                                 2919584   405 ns/op
-BenchmarkCache_Set/FirstInFirstOut_medium_value-8                                2990841   391 ns/op
-BenchmarkCache_Set/FirstInFirstOut_large_value-8                                 2970513   391 ns/op
-BenchmarkCache_Set/LeastRecentlyUsed_small_value-8                               2962939   402 ns/op
-BenchmarkCache_Set/LeastRecentlyUsed_medium_value-8                              2962963   390 ns/op
-BenchmarkCache_Set/LeastRecentlyUsed_large_value-8                               2962928   394 ns/op
-BenchmarkCache_SetUsingMaxMemoryUsage                                           
-BenchmarkCache_SetUsingMaxMemoryUsage/small_value-8                              2683356   447 ns/op
-BenchmarkCache_SetUsingMaxMemoryUsage/medium_value-8                             2637578   441 ns/op
-BenchmarkCache_SetUsingMaxMemoryUsage/large_value-8                              2672434   443 ns/op
-BenchmarkCache_SetWithMaxSize                                                   
-BenchmarkCache_SetWithMaxSize/100_small_value-8                                  4782966   252 ns/op
-BenchmarkCache_SetWithMaxSize/10000_small_value-8                                4067967   296 ns/op
-BenchmarkCache_SetWithMaxSize/100000_small_value-8                               3762055   328 ns/op
-BenchmarkCache_SetWithMaxSize/100_medium_value-8                                 4760479   252 ns/op
-BenchmarkCache_SetWithMaxSize/10000_medium_value-8                               4081050   295 ns/op
-BenchmarkCache_SetWithMaxSize/100000_medium_value-8                              3785050   330 ns/op
-BenchmarkCache_SetWithMaxSize/100_large_value-8                                  4732909   254 ns/op
-BenchmarkCache_SetWithMaxSize/10000_large_value-8                                4079533   297 ns/op
-BenchmarkCache_SetWithMaxSize/100000_large_value-8                               3712820   331 ns/op
-BenchmarkCache_SetWithMaxSizeAndLRU                                             
-BenchmarkCache_SetWithMaxSizeAndLRU/100_small_value-8                            4761732   254 ns/op
-BenchmarkCache_SetWithMaxSizeAndLRU/10000_small_value-8                          4084474   296 ns/op
-BenchmarkCache_SetWithMaxSizeAndLRU/100000_small_value-8                         3761402   329 ns/op
-BenchmarkCache_SetWithMaxSizeAndLRU/100_medium_value-8                           4783075   254 ns/op
-BenchmarkCache_SetWithMaxSizeAndLRU/10000_medium_value-8                         4103980   296 ns/op
-BenchmarkCache_SetWithMaxSizeAndLRU/100000_medium_value-8                        3646023   331 ns/op
-BenchmarkCache_SetWithMaxSizeAndLRU/100_large_value-8                            4779025   254 ns/op
-BenchmarkCache_SetWithMaxSizeAndLRU/10000_large_value-8                          4096192   296 ns/op
-BenchmarkCache_SetWithMaxSizeAndLRU/100000_large_value-8                         3726823   331 ns/op
-BenchmarkCache_GetSetMultipleConcurrent                                         
-BenchmarkCache_GetSetMultipleConcurrent-8                                         707142  1698 ns/op
-BenchmarkCache_GetSetConcurrentWithFrequentEviction
-BenchmarkCache_GetSetConcurrentWithFrequentEviction/FirstInFirstOut-8            3616256   334 ns/op
-BenchmarkCache_GetSetConcurrentWithFrequentEviction/LeastRecentlyUsed-8          3636367   331 ns/op
-BenchmarkCache_GetConcurrentWithLRU                                              
-BenchmarkCache_GetConcurrentWithLRU/FirstInFirstOut-8                            4405557   268 ns/op
-BenchmarkCache_GetConcurrentWithLRU/LeastRecentlyUsed-8                          4445475   269 ns/op
-BenchmarkCache_WithForceNilInterfaceOnNilPointer
-BenchmarkCache_WithForceNilInterfaceOnNilPointer/true_with_nil_struct_pointer-8  6184591   191 ns/op
-BenchmarkCache_WithForceNilInterfaceOnNilPointer/true-8                          6090482   191 ns/op
-BenchmarkCache_WithForceNilInterfaceOnNilPointer/false_with_nil_struct_pointer-8 6184629   187 ns/op
-BenchmarkCache_WithForceNilInterfaceOnNilPointer/false-8                         6281781   186 ns/op
-(Trimmed "BenchmarkCache_" for readability)
-WithForceNilInterfaceOnNilPointerWithConcurrency
-WithForceNilInterfaceOnNilPointerWithConcurrency/true_with_nil_struct_pointer-8  4379564   268 ns/op
-WithForceNilInterfaceOnNilPointerWithConcurrency/true-8                          4379558   265 ns/op
-WithForceNilInterfaceOnNilPointerWithConcurrency/false_with_nil_struct_pointer-8 4444456   261 ns/op
-WithForceNilInterfaceOnNilPointerWithConcurrency/false-8                         4493896   262 ns/op
+BenchmarkMap_Get-8                                                              49944228     24.2 ns/op      7 B/op   0 allocs/op
+BenchmarkMap_Set/small_value-8                                                   3939964    394.1 ns/op    188 B/op   2 allocs/op
+BenchmarkMap_Set/medium_value-8                                                  3868586    395.5 ns/op    191 B/op   2 allocs/op
+BenchmarkMap_Set/large_value-8                                                   3992138    385.3 ns/op    186 B/op   2 allocs/op
+// Gocache                                                                                               
+BenchmarkCache_Get/FirstInFirstOut-8                                            27907950     44.3 ns/op     7 B/op    0 allocs/op
+BenchmarkCache_Get/LeastRecentlyUsed-8                                          28211396     44.2 ns/op     7 B/op    0 allocs/op
+BenchmarkCache_Set/FirstInFirstOut_small_value-8                                 3139538    373.5 ns/op    185 B/op   3 allocs/op
+BenchmarkCache_Set/FirstInFirstOut_medium_value-8                                3099516    378.6 ns/op    186 B/op   3 allocs/op
+BenchmarkCache_Set/FirstInFirstOut_large_value-8                                 3086776    386.7 ns/op    186 B/op   3 allocs/op
+BenchmarkCache_Set/LeastRecentlyUsed_small_value-8                               3070555    379.0 ns/op    187 B/op   3 allocs/op
+BenchmarkCache_Set/LeastRecentlyUsed_medium_value-8                              3056928    383.8 ns/op    187 B/op   3 allocs/op
+BenchmarkCache_Set/LeastRecentlyUsed_large_value-8                               3108250    383.8 ns/op    186 B/op   3 allocs/op
+BenchmarkCache_SetUsingMaxMemoryUsage/medium_value-8                             2773315    449.0 ns/op    210 B/op   4 allocs/op
+BenchmarkCache_SetUsingMaxMemoryUsage/large_value-8                              2731818    440.0 ns/op    211 B/op   4 allocs/op
+BenchmarkCache_SetUsingMaxMemoryUsage/small_value-8                              2659296    446.8 ns/op    213 B/op   4 allocs/op
+BenchmarkCache_SetWithMaxSize/100_small_value-8                                  4848658    248.8 ns/op    114 B/op   3 allocs/op
+BenchmarkCache_SetWithMaxSize/10000_small_value-8                                4117632    293.7 ns/op    106 B/op   3 allocs/op
+BenchmarkCache_SetWithMaxSize/100000_small_value-8                               3867402    313.0 ns/op    110 B/op   3 allocs/op
+BenchmarkCache_SetWithMaxSize/100_medium_value-8                                 4750057    250.1 ns/op    113 B/op   3 allocs/op
+BenchmarkCache_SetWithMaxSize/10000_medium_value-8                               4143772    294.5 ns/op    106 B/op   3 allocs/op
+BenchmarkCache_SetWithMaxSize/100000_medium_value-8                              3768883    313.2 ns/op    111 B/op   3 allocs/op
+BenchmarkCache_SetWithMaxSize/100_large_value-8                                  4822646    251.1 ns/op    114 B/op   3 allocs/op
+BenchmarkCache_SetWithMaxSize/10000_large_value-8                                4154428    291.6 ns/op    106 B/op   3 allocs/op
+BenchmarkCache_SetWithMaxSize/100000_large_value-8                               3897358    313.7 ns/op    110 B/op   3 allocs/op
+BenchmarkCache_SetWithMaxSizeAndLRU/100_small_value-8                            4784180    254.2 ns/op    114 B/op   3 allocs/op
+BenchmarkCache_SetWithMaxSizeAndLRU/10000_small_value-8                          4067042    292.0 ns/op    106 B/op   3 allocs/op
+BenchmarkCache_SetWithMaxSizeAndLRU/100000_small_value-8                         3832760    313.8 ns/op    111 B/op   3 allocs/op
+BenchmarkCache_SetWithMaxSizeAndLRU/100_medium_value-8                           4846706    252.2 ns/op    114 B/op   3 allocs/op
+BenchmarkCache_SetWithMaxSizeAndLRU/10000_medium_value-8                         4103817    292.5 ns/op    106 B/op   3 allocs/op
+BenchmarkCache_SetWithMaxSizeAndLRU/100000_medium_value-8                        3845623    315.1 ns/op    111 B/op   3 allocs/op
+BenchmarkCache_SetWithMaxSizeAndLRU/100_large_value-8                            4744513    257.9 ns/op    114 B/op   3 allocs/op
+BenchmarkCache_SetWithMaxSizeAndLRU/10000_large_value-8                          3956316    299.5 ns/op    106 B/op   3 allocs/op
+BenchmarkCache_SetWithMaxSizeAndLRU/100000_large_value-8                         3876843    351.3 ns/op    110 B/op   3 allocs/op
+BenchmarkCache_GetSetMultipleConcurrent-8                                         750088   1566.0 ns/op    128 B/op   8 allocs/op
+BenchmarkCache_GetSetConcurrentWithFrequentEviction/FirstInFirstOut-8            3836961    316.2 ns/op     80 B/op   1 allocs/op
+BenchmarkCache_GetSetConcurrentWithFrequentEviction/LeastRecentlyUsed-8          3846165    315.6 ns/op     80 B/op   1 allocs/op
+BenchmarkCache_GetConcurrently/FirstInFirstOut-8                                 4830342    239.8 ns/op      8 B/op   1 allocs/op
+BenchmarkCache_GetConcurrently/LeastRecentlyUsed-8                               4895587    243.2 ns/op      8 B/op   1 allocs/op
+(Trimmed "BenchmarkCache_" for readability)                                                              
+WithForceNilInterfaceOnNilPointer/true_with_nil_struct_pointer-8                 6901461    178.5 ns/op      7 B/op   1 allocs/op
+WithForceNilInterfaceOnNilPointer/true-8                                         6629566    180.7 ns/op      7 B/op   1 allocs/op
+WithForceNilInterfaceOnNilPointer/false_with_nil_struct_pointer-8                6282798    170.1 ns/op      7 B/op   1 allocs/op
+WithForceNilInterfaceOnNilPointer/false-8                                        6741382    172.6 ns/op      7 B/op   1 allocs/op
+WithForceNilInterfaceOnNilPointerWithConcurrency/true_with_nil_struct_pointer-8  4432951    258.0 ns/op      8 B/op   1 allocs/op
+WithForceNilInterfaceOnNilPointerWithConcurrency/true-8                          4676943    244.4 ns/op      8 B/op   1 allocs/op
+WithForceNilInterfaceOnNilPointerWithConcurrency/false_with_nil_struct_pointer-8 4818418    239.6 ns/op      8 B/op   1 allocs/op
+WithForceNilInterfaceOnNilPointerWithConcurrency/false-8                         5025937    238.2 ns/op      8 B/op   1 allocs/op
 ```
 
 

vendor/github.com/TwiN/gocache/v2/entry.go

@@ -12,7 +12,7 @@ type Entry struct {
 	Key string
 
 	// Value is the value of the cache entry
-	Value interface{}
+	Value any
 
 	// RelevantTimestamp is the variable used to store either:
 	// - creation timestamp, if the Cache's EvictionPolicy is FirstInFirstOut
@@ -48,7 +48,7 @@ func (entry *Entry) SizeInBytes() int {
 	return toBytes(entry.Key) + toBytes(entry.Value) + 32
 }
 
-func toBytes(value interface{}) int {
+func toBytes(value any) int {
 	switch value.(type) {
 	case string:
 		return int(unsafe.Sizeof(value)) + len(value.(string))
@@ -60,9 +60,9 @@ func toBytes(value interface{}) int {
 		return int(unsafe.Sizeof(value)) + 4
 	case int64, uint64, int, uint, float64, complex128:
 		return int(unsafe.Sizeof(value)) + 8
-	case []interface{}:
+	case []any:
 		size := 0
-		for _, v := range value.([]interface{}) {
+		for _, v := range value.([]any) {
 			size += toBytes(v)
 		}
 		return int(unsafe.Sizeof(value)) + size

vendor/github.com/TwiN/gocache/v2/gocache.go

@@ -37,6 +37,8 @@ var (
 )
 
 // Cache is the core struct of gocache which contains the data as well as all relevant configuration fields
+//
+// Do not instantiate this struct directly, use NewCache instead
 type Cache struct {
 	// maxSize is the maximum amount of entries that can be in the cache at any given time
 	// By default, this is set to DefaultMaxSize
@@ -50,6 +52,10 @@ type Cache struct {
 	// evictionPolicy is the eviction policy
 	evictionPolicy EvictionPolicy
 
+	// defaultTTL is the default TTL for each entry
+	// Defaults to NoExpiration
+	defaultTTL time.Duration
+
 	// stats is the object that contains cache statistics/metrics
 	stats *Statistics
 
@@ -143,12 +149,23 @@ func (cache *Cache) WithMaxMemoryUsage(maxMemoryUsageInBytes int) *Cache {
 }
 
 // WithEvictionPolicy sets eviction algorithm.
+//
 // Defaults to FirstInFirstOut (FIFO)
 func (cache *Cache) WithEvictionPolicy(policy EvictionPolicy) *Cache {
 	cache.evictionPolicy = policy
 	return cache
 }
 
+// WithDefaultTTL sets the default TTL for each entry (unless a different TTL is specified using SetWithTTL or SetAllWithTTL)
+//
+// Defaults to NoExpiration (-1)
+func (cache *Cache) WithDefaultTTL(ttl time.Duration) *Cache {
+	if ttl > 1 {
+		cache.defaultTTL = ttl
+	}
+	return cache
+}
+
 // WithForceNilInterfaceOnNilPointer sets whether all Set-like functions should set a value as nil if the
 // interface passed has a nil value but not a nil type.
 //
@@ -165,25 +182,27 @@ func (cache *Cache) WithEvictionPolicy(policy EvictionPolicy) *Cache {
 // is nil or not.
 //
 // If set to true (default):
-//     cache := gocache.NewCache().WithForceNilInterfaceOnNilPointer(true)
-//     cache.Set("key", (*Struct)(nil))
-//     value, _ := cache.Get("key")
-//     // the following returns true, because the interface{} was forcefully set to nil
-//     if value == nil {}
-//     // the following will panic, because the value has been casted to its type (which is nil)
-//     if value.(*Struct) == nil {}
+//
+//	cache := gocache.NewCache().WithForceNilInterfaceOnNilPointer(true)
+//	cache.Set("key", (*Struct)(nil))
+//	value, _ := cache.Get("key")
+//	// the following returns true, because the interface{} (any) was forcefully set to nil
+//	if value == nil {}
+//	// the following will panic, because the value has been casted to its type (which is nil)
+//	if value.(*Struct) == nil {}
 //
 // If set to false:
-//     cache := gocache.NewCache().WithForceNilInterfaceOnNilPointer(false)
-//     cache.Set("key", (*Struct)(nil))
-//     value, _ := cache.Get("key")
-//     // the following returns false, because the interface{} returned has a non-nil type (*Struct)
-//     if value == nil {}
-//     // the following returns true, because the value has been casted to its type
-//     if value.(*Struct) == nil {}
+//
+//	cache := gocache.NewCache().WithForceNilInterfaceOnNilPointer(false)
+//	cache.Set("key", (*Struct)(nil))
+//	value, _ := cache.Get("key")
+//	// the following returns false, because the interface{} (any) returned has a non-nil type (*Struct)
+//	if value == nil {}
+//	// the following returns true, because the value has been cast to its type
+//	if value.(*Struct) == nil {}
 //
 // In other words, if set to true, you do not need to cast the value returned from the cache to
-// to check if the value is nil.
+// check if the value is nil.
 //
 // Defaults to true
 func (cache *Cache) WithForceNilInterfaceOnNilPointer(forceNilInterfaceOnNilPointer bool) *Cache {
@@ -194,12 +213,13 @@ func (cache *Cache) WithForceNilInterfaceOnNilPointer(forceNilInterfaceOnNilPoin
 // NewCache creates a new Cache
 //
 // Should be used in conjunction with Cache.WithMaxSize, Cache.WithMaxMemoryUsage and/or Cache.WithEvictionPolicy
-//     gocache.NewCache().WithMaxSize(10000).WithEvictionPolicy(gocache.LeastRecentlyUsed)
 //
+//	gocache.NewCache().WithMaxSize(10000).WithEvictionPolicy(gocache.LeastRecentlyUsed)
 func NewCache() *Cache {
 	return &Cache{
 		maxSize:                       DefaultMaxSize,
 		evictionPolicy:                FirstInFirstOut,
+		defaultTTL:                    NoExpiration,
 		stats:                         &Statistics{},
 		entries:                       make(map[string]*Entry),
 		mutex:                         sync.RWMutex{},
@@ -209,15 +229,15 @@ func NewCache() *Cache {
 }
 
 // Set creates or updates a key with a given value
-func (cache *Cache) Set(key string, value interface{}) {
-	cache.SetWithTTL(key, value, NoExpiration)
+func (cache *Cache) Set(key string, value any) {
+	cache.SetWithTTL(key, value, cache.defaultTTL)
 }
 
 // SetWithTTL creates or updates a key with a given value and sets an expiration time (-1 is NoExpiration)
 //
 // The TTL provided must be greater than 0, or NoExpiration (-1). If a negative value that isn't -1 (NoExpiration) is
 // provided, the entry will not be created if the key doesn't exist
-func (cache *Cache) SetWithTTL(key string, value interface{}, ttl time.Duration) {
+func (cache *Cache) SetWithTTL(key string, value any, ttl time.Duration) {
 	// An interface is only nil if both its value and its type are nil, however, passing a nil pointer as an interface{}
 	// means that the interface itself is not nil, because the interface value is nil but not the type.
 	if cache.forceNilInterfaceOnNilPointer {
@@ -298,16 +318,21 @@ func (cache *Cache) SetWithTTL(key string, value interface{}, ttl time.Duration)
 }
 
 // SetAll creates or updates multiple values
-func (cache *Cache) SetAll(entries map[string]interface{}) {
+func (cache *Cache) SetAll(entries map[string]any) {
+	cache.SetAllWithTTL(entries, cache.defaultTTL)
+}
+
+// SetAllWithTTL creates or updates multiple values
+func (cache *Cache) SetAllWithTTL(entries map[string]any, ttl time.Duration) {
 	for key, value := range entries {
-		cache.SetWithTTL(key, value, NoExpiration)
+		cache.SetWithTTL(key, value, ttl)
 	}
 }
 
 // Get retrieves an entry using the key passed as parameter
 // If there is no such entry, the value returned will be nil and the boolean will be false
 // If there is an entry, the value returned will be the value cached and the boolean will be true
-func (cache *Cache) Get(key string) (interface{}, bool) {
+func (cache *Cache) Get(key string) (any, bool) {
 	cache.mutex.Lock()
 	entry, ok := cache.get(key)
 	if !ok {
@@ -337,7 +362,7 @@ func (cache *Cache) Get(key string) (interface{}, bool) {
 
 // GetValue retrieves an entry using the key passed as parameter
 // Unlike Get, this function only returns the value
-func (cache *Cache) GetValue(key string) interface{} {
+func (cache *Cache) GetValue(key string) any {
 	value, _ := cache.Get(key)
 	return value
 }
@@ -346,8 +371,8 @@ func (cache *Cache) GetValue(key string) interface{} {
 // All keys are returned in the map, regardless of whether they exist or not, however, entries that do not exist in the
 // cache will return nil, meaning that there is no way of determining whether a key genuinely has the value nil, or
 // whether it doesn't exist in the cache using only this function.
-func (cache *Cache) GetByKeys(keys []string) map[string]interface{} {
-	entries := make(map[string]interface{})
+func (cache *Cache) GetByKeys(keys []string) map[string]any {
+	entries := make(map[string]any)
 	for _, key := range keys {
 		entries[key], _ = cache.Get(key)
 	}
@@ -365,8 +390,8 @@ func (cache *Cache) GetByKeys(keys []string) map[string]interface{} {
 // GetKeysByPattern is a good alternative if you want to retrieve entries that you do not have the key for, as it only
 // retrieves the keys and does not trigger active eviction and has a parameter for setting a limit to the number of keys
 // you wish to retrieve.
-func (cache *Cache) GetAll() map[string]interface{} {
-	entries := make(map[string]interface{})
+func (cache *Cache) GetAll() map[string]any {
+	entries := make(map[string]any)
 	cache.mutex.Lock()
 	for key, entry := range cache.entries {
 		if entry.Expired() {
@@ -385,8 +410,9 @@ func (cache *Cache) GetAll() map[string]interface{} {
 // If the limit is above 0, the search will stop once the specified number of matching keys have been found.
 //
 // e.g.
-//     cache.GetKeysByPattern("*some*", 0) will return all keys containing "some" in them
-//     cache.GetKeysByPattern("*some*", 5) will return 5 keys (or less) containing "some" in them
+//
+//	cache.GetKeysByPattern("*some*", 0) will return all keys containing "some" in them
+//	cache.GetKeysByPattern("*some*", 5) will return 5 keys (or less) containing "some" in them
 //
 // Note that GetKeysByPattern does not trigger active evictions, nor does it count as accessing the entry (if LRU).
 // The reason for that behavior is that these two (active eviction and access) only applies when you access the value

vendor/github.com/TwiN/gocache/v2/policy.go

@@ -3,7 +3,7 @@ package gocache
 // EvictionPolicy is what dictates how evictions are handled
 type EvictionPolicy string
 
-var (
+const (
 	// LeastRecentlyUsed is an eviction policy that causes the most recently accessed cache entry to be moved to the
 	// head of the cache. Effectively, this causes the cache entries that have not been accessed for some time to
 	// gradually move closer and closer to the tail, and since the tail is the entry that gets deleted when an eviction

vendor/github.com/TwiN/health/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2022 TwiN
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

vendor/github.com/TwiN/health/LICENSE.md

@@ -1,9 +0,0 @@
-MIT License
-
-Copyright (c) 2022 TwiN
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

vendor/github.com/TwiN/health/README.md

@@ -28,7 +28,7 @@ server := &http.Server{
 }
 ```
 
-By default, the handler will return `UP` when the status is down, and `DOWN` when the status is down.
+By default, the handler will return `UP` when the status is up, and `DOWN` when the status is down.
 If you prefer using JSON, however, you may initialize the health handler like so:
 ```go
 router.Handle("/health", health.Handler().WithJSON(true))
@@ -37,17 +37,24 @@ The above will cause the response body to become `{"status":"UP"}` and `{"status
 unless there is a reason, in which case a reason set to `because` would return `{"status":"UP", "reason":"because"}`
 and `{"status":"DOWN", "reason":"because"}` respectively.
 
-To set the health status to `DOWN`, you may use `health.SetUnhealthy("<enter reason here>`)` -- the
-string passed will be automatically set as the reason. In a similar fashion, to set the health status to `UP`,
-you may use `health.SetHealthy()`.
+To set the health status to `DOWN` with a reason:
+```go
+health.SetUnhealthy("<enter reason here>")
+```
+The string passed will be automatically set as the reason.
 
-Alternatively, to change the health of the application, you can use `health.SetStatus(<status>)` where `<status>` is `health.Up`
+In a similar fashion, to set the health status to `UP` and clear the reason:
+```go
+health.SetHealthy()
+```
+
+
+Alternatively, to set the status and the reason individually you can use `health.SetStatus(<status>)` where `<status>` is `health.Up`
 or `health.Down`:
 ```go
 health.SetStatus(health.Up)
 health.SetStatus(health.Down)
 ```
-
 As for the reason:
 ```go
 health.SetReason("database is unreachable")

vendor/github.com/TwiN/health/health.go

@@ -105,14 +105,19 @@ func SetStatusAndReason(status Status, reason string) {
 	handler.mutex.Unlock()
 }
 
-// SetHealthy sets the status to Up and the reason to a blank string
-func SetHealthy() {
+// SetStatusAndResetReason sets the status and resets the reason to a blank string
+func SetStatusAndResetReason(status Status) {
 	handler.mutex.Lock()
-	handler.status = Up
+	handler.status = status
 	handler.reason = ""
 	handler.mutex.Unlock()
 }
 
+// SetHealthy sets the status to Up and the reason to a blank string
+func SetHealthy() {
+	SetStatusAndResetReason(Up)
+}
+
 // SetUnhealthy sets the status to Down and the reason to the string passed as parameter
 //
 // Unlike SetHealthy, this function enforces setting a reason, because it's good practice to give at least a bit

vendor/github.com/TwiN/whois/.gitignore

@@ -0,0 +1,2 @@
+.idea
+bin

vendor/github.com/TwiN/whois/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2022 TwiN
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

vendor/github.com/TwiN/whois/Makefile

@@ -0,0 +1,4 @@
+.PHONY: build-binaries
+
+build-binaries:
+	./scripts/build.sh

vendor/github.com/TwiN/whois/README.md

@@ -0,0 +1,81 @@
+# whois
+![test](https://github.com/TwiN/whois/workflows/test/badge.svg?branch=master)
+
+Lightweight library for retrieving WHOIS information on a domain.
+
+It automatically retrieves the appropriate WHOIS server based on the domain's TLD by first querying IANA.
+
+
+## Usage
+### As an executable
+To install it:
+```console
+go install github.com/TwiN/whois/cmd/whois@latest
+```
+To run it:
+```console 
+whois example.com
+```
+
+### As a library
+```console
+go get github.com/TwiN/whois
+```
+
+#### Query
+If all you want is the text a WHOIS server would return you, you can use the `Query` method of the `whois.Client` type:
+```go
+package main
+
+import "github.com/TwiN/whois"
+
+func main() {
+    client := whois.NewClient()
+    output, err := client.Query("example.com")
+    if err != nil {
+    	panic(err)
+    }
+    println(output)
+}
+```
+
+#### QueryAndParse
+If you want specific pieces of information, you can use the `QueryAndParse` method of the `whois.Client` type:
+```go
+package main
+
+import "github.com/TwiN/whois"
+
+func main() {
+    client := whois.NewClient()
+    response, err := client.QueryAndParse("example.com")
+    if err != nil {
+    	panic(err)
+    }
+    println(response.ExpirationDate.String()) 
+}
+```
+Note that because there is no standardized format for WHOIS responses, this parsing may not be successful for every single TLD.
+
+Currently, the only fields parsed are:
+- `ExpirationDate`: The time.Time at which the domain will expire
+- `DomainStatuses`: The statuses that the domain currently has (e.g. `clientTransferProhibited`)
+- `NameServers`: The nameservers currently tied to the domain
+
+If you'd like one or more other fields to be parsed, please don't be shy and create an issue or a pull request.
+
+#### Caching referral WHOIS servers
+The way that WHOIS scales is by having one "main" WHOIS server, namely `whois.iana.org:43`, refer to other WHOIS server
+on a per-TLD basis. 
+
+In other word, let's say that you wanted to have the WHOIS information for `example.com`. 
+The first step would be to query `whois.iana.org:43` with `com`, which would return `whois.verisign-grs.com`.
+Then, you would query `whois.verisign-grs.com:43` for the WHOIS information on `example.com`.
+
+If you're querying a lot of servers, making two queries instead of one can be a little wasteful, hence `WithReferralCache(true)`:
+```go
+client := whois.NewClient().WithReferralCache(true)
+```
+The above will cache the referral WHOIS server for each TLD, so that you can directly query the appropriate WHOIS server
+instead of first querying `whois.iana.org:43` for the referral.
+

vendor/github.com/TwiN/whois/whois.go

@@ -0,0 +1,130 @@
+package whois
+
+import (
+	"io"
+	"net"
+	"strings"
+	"time"
+)
+
+const (
+	ianaWHOISServerAddress = "whois.iana.org:43"
+)
+
+type Client struct {
+	whoisServerAddress string
+
+	isCachingReferralWHOISServers bool
+	referralWHOISServersCache     map[string]string
+}
+
+func NewClient() *Client {
+	return &Client{
+		whoisServerAddress:        ianaWHOISServerAddress,
+		referralWHOISServersCache: make(map[string]string),
+	}
+}
+
+// WithReferralCache allows you to enable or disable the referral WHOIS server cache.
+// While ianaWHOISServerAddress is the "entry point" for WHOIS queries, it sometimes has
+// availability issues. One way to mitigate this is to cache the referral WHOIS server.
+//
+// This is disabled by default
+func (c *Client) WithReferralCache(enabled bool) *Client {
+	c.isCachingReferralWHOISServers = enabled
+	if enabled {
+		// We'll set a couple of common ones right away to avoid unnecessary queries
+		c.referralWHOISServersCache = map[string]string{
+			"com":   "whois.verisign-grs.com",
+			"black": "whois.nic.black",
+			"dev":   "whois.nic.google",
+			"green": "whois.nic.green",
+			"io":    "whois.nic.io",
+			"net":   "whois.verisign-grs.com",
+			"org":   "whois.publicinterestregistry.org",
+			"red":   "whois.nic.red",
+			"sh":    "whois.nic.sh",
+		}
+	}
+	return c
+}
+
+func (c *Client) Query(domain string) (string, error) {
+	parts := strings.Split(domain, ".")
+	if c.isCachingReferralWHOISServers {
+		if cachedWHOISServer, ok := c.referralWHOISServersCache[domain]; ok {
+			return c.query(cachedWHOISServer, domain)
+		}
+	}
+	output, err := c.query(c.whoisServerAddress, parts[len(parts)-1])
+	if err != nil {
+		return "", err
+	}
+	if strings.Contains(output, "whois:") {
+		startIndex := strings.Index(output, "whois:") + 6
+		endIndex := strings.Index(output[startIndex:], "\n") + startIndex
+		whois := strings.TrimSpace(output[startIndex:endIndex])
+		if referOutput, err := c.query(whois+":43", domain); err == nil {
+			if c.isCachingReferralWHOISServers {
+				c.referralWHOISServersCache[domain] = whois + ":43"
+			}
+			return referOutput, nil
+		}
+		return "", err
+	}
+	return output, nil
+}
+
+func (c Client) query(whoisServerAddress, domain string) (string, error) {
+	connection, err := net.DialTimeout("tcp", whoisServerAddress, 10*time.Second)
+	if err != nil {
+		return "", err
+	}
+	defer connection.Close()
+	_ = connection.SetDeadline(time.Now().Add(5 * time.Second))
+	_, err = connection.Write([]byte(domain + "\r\n"))
+	if err != nil {
+		return "", err
+	}
+	output, err := io.ReadAll(connection)
+	if err != nil {
+		return "", err
+	}
+	return string(output), nil
+}
+
+type Response struct {
+	ExpirationDate time.Time
+	DomainStatuses []string
+	NameServers    []string
+}
+
+// QueryAndParse tries to parse the response from the WHOIS server
+// There is no standardized format for WHOIS responses, so this is an attempt at best.
+//
+// Being the selfish person that I am, I also only parse the fields that I need.
+// If you need more fields, please open an issue or pull request.
+func (c Client) QueryAndParse(domain string) (*Response, error) {
+	text, err := c.Query(domain)
+	if err != nil {
+		return nil, err
+	}
+	response := Response{}
+	for _, line := range strings.Split(text, "\n") {
+		line = strings.TrimSpace(line)
+		valueStartIndex := strings.Index(line, ":")
+		if valueStartIndex == -1 {
+			continue
+		}
+		key := strings.ToLower(strings.TrimSpace(line[:valueStartIndex]))
+		value := strings.TrimSpace(line[valueStartIndex+1:])
+		if response.ExpirationDate.Unix() != 0 && strings.Contains(key, "expir") && strings.Contains(key, "date") {
+			response.ExpirationDate, _ = time.Parse(time.RFC3339, strings.ToUpper(value))
+		} else if strings.Contains(key, "domain status") {
+			response.DomainStatuses = append(response.DomainStatuses, value)
+		} else if strings.Contains(key, "name server") {
+			response.NameServers = append(response.NameServers, value)
+		}
+	}
+	return &response, nil
+}

vendor/github.com/davecgh/go-spew/LICENSE

@@ -0,0 +1,15 @@
+ISC License
+
+Copyright (c) 2012-2016 Dave Collins <dave@davec.name>
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

vendor/github.com/davecgh/go-spew/spew/bypass.go

@@ -0,0 +1,145 @@
+// Copyright (c) 2015-2016 Dave Collins <dave@davec.name>
+//
+// Permission to use, copy, modify, and distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+// NOTE: Due to the following build constraints, this file will only be compiled
+// when the code is not running on Google App Engine, compiled by GopherJS, and
+// "-tags safe" is not added to the go build command line.  The "disableunsafe"
+// tag is deprecated and thus should not be used.
+// Go versions prior to 1.4 are disabled because they use a different layout
+// for interfaces which make the implementation of unsafeReflectValue more complex.
+// +build !js,!appengine,!safe,!disableunsafe,go1.4
+
+package spew
+
+import (
+	"reflect"
+	"unsafe"
+)
+
+const (
+	// UnsafeDisabled is a build-time constant which specifies whether or
+	// not access to the unsafe package is available.
+	UnsafeDisabled = false
+
+	// ptrSize is the size of a pointer on the current arch.
+	ptrSize = unsafe.Sizeof((*byte)(nil))
+)
+
+type flag uintptr
+
+var (
+	// flagRO indicates whether the value field of a reflect.Value
+	// is read-only.
+	flagRO flag
+
+	// flagAddr indicates whether the address of the reflect.Value's
+	// value may be taken.
+	flagAddr flag
+)
+
+// flagKindMask holds the bits that make up the kind
+// part of the flags field. In all the supported versions,
+// it is in the lower 5 bits.
+const flagKindMask = flag(0x1f)
+
+// Different versions of Go have used different
+// bit layouts for the flags type. This table
+// records the known combinations.
+var okFlags = []struct {
+	ro, addr flag
+}{{
+	// From Go 1.4 to 1.5
+	ro:   1 << 5,
+	addr: 1 << 7,
+}, {
+	// Up to Go tip.
+	ro:   1<<5 | 1<<6,
+	addr: 1 << 8,
+}}
+
+var flagValOffset = func() uintptr {
+	field, ok := reflect.TypeOf(reflect.Value{}).FieldByName("flag")
+	if !ok {
+		panic("reflect.Value has no flag field")
+	}
+	return field.Offset
+}()
+
+// flagField returns a pointer to the flag field of a reflect.Value.
+func flagField(v *reflect.Value) *flag {
+	return (*flag)(unsafe.Pointer(uintptr(unsafe.Pointer(v)) + flagValOffset))
+}
+
+// unsafeReflectValue converts the passed reflect.Value into a one that bypasses
+// the typical safety restrictions preventing access to unaddressable and
+// unexported data.  It works by digging the raw pointer to the underlying
+// value out of the protected value and generating a new unprotected (unsafe)
+// reflect.Value to it.
+//
+// This allows us to check for implementations of the Stringer and error
+// interfaces to be used for pretty printing ordinarily unaddressable and
+// inaccessible values such as unexported struct fields.
+func unsafeReflectValue(v reflect.Value) reflect.Value {
+	if !v.IsValid() || (v.CanInterface() && v.CanAddr()) {
+		return v
+	}
+	flagFieldPtr := flagField(&v)
+	*flagFieldPtr &^= flagRO
+	*flagFieldPtr |= flagAddr
+	return v
+}
+
+// Sanity checks against future reflect package changes
+// to the type or semantics of the Value.flag field.
+func init() {
+	field, ok := reflect.TypeOf(reflect.Value{}).FieldByName("flag")
+	if !ok {
+		panic("reflect.Value has no flag field")
+	}
+	if field.Type.Kind() != reflect.TypeOf(flag(0)).Kind() {
+		panic("reflect.Value flag field has changed kind")
+	}
+	type t0 int
+	var t struct {
+		A t0
+		// t0 will have flagEmbedRO set.
+		t0
+		// a will have flagStickyRO set
+		a t0
+	}
+	vA := reflect.ValueOf(t).FieldByName("A")
+	va := reflect.ValueOf(t).FieldByName("a")
+	vt0 := reflect.ValueOf(t).FieldByName("t0")
+
+	// Infer flagRO from the difference between the flags
+	// for the (otherwise identical) fields in t.
+	flagPublic := *flagField(&vA)
+	flagWithRO := *flagField(&va) | *flagField(&vt0)
+	flagRO = flagPublic ^ flagWithRO
+
+	// Infer flagAddr from the difference between a value
+	// taken from a pointer and not.
+	vPtrA := reflect.ValueOf(&t).Elem().FieldByName("A")
+	flagNoPtr := *flagField(&vA)
+	flagPtr := *flagField(&vPtrA)
+	flagAddr = flagNoPtr ^ flagPtr
+
+	// Check that the inferred flags tally with one of the known versions.
+	for _, f := range okFlags {
+		if flagRO == f.ro && flagAddr == f.addr {
+			return
+		}
+	}
+	panic("reflect.Value read-only flag has changed semantics")
+}

vendor/github.com/davecgh/go-spew/spew/bypasssafe.go

@@ -0,0 +1,38 @@
+// Copyright (c) 2015-2016 Dave Collins <dave@davec.name>
+//
+// Permission to use, copy, modify, and distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+// NOTE: Due to the following build constraints, this file will only be compiled
+// when the code is running on Google App Engine, compiled by GopherJS, or
+// "-tags safe" is added to the go build command line.  The "disableunsafe"
+// tag is deprecated and thus should not be used.
+// +build js appengine safe disableunsafe !go1.4
+
+package spew
+
+import "reflect"
+
+const (
+	// UnsafeDisabled is a build-time constant which specifies whether or
+	// not access to the unsafe package is available.
+	UnsafeDisabled = true
+)
+
+// unsafeReflectValue typically converts the passed reflect.Value into a one
+// that bypasses the typical safety restrictions preventing access to
+// unaddressable and unexported data.  However, doing this relies on access to
+// the unsafe package.  This is a stub version which simply returns the passed
+// reflect.Value when the unsafe package is not available.
+func unsafeReflectValue(v reflect.Value) reflect.Value {
+	return v
+}

vendor/github.com/davecgh/go-spew/spew/common.go

@@ -0,0 +1,341 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"reflect"
+	"sort"
+	"strconv"
+)
+
+// Some constants in the form of bytes to avoid string overhead.  This mirrors
+// the technique used in the fmt package.
+var (
+	panicBytes            = []byte("(PANIC=")
+	plusBytes             = []byte("+")
+	iBytes                = []byte("i")
+	trueBytes             = []byte("true")
+	falseBytes            = []byte("false")
+	interfaceBytes        = []byte("(interface {})")
+	commaNewlineBytes     = []byte(",\n")
+	newlineBytes          = []byte("\n")
+	openBraceBytes        = []byte("{")
+	openBraceNewlineBytes = []byte("{\n")
+	closeBraceBytes       = []byte("}")
+	asteriskBytes         = []byte("*")
+	colonBytes            = []byte(":")
+	colonSpaceBytes       = []byte(": ")
+	openParenBytes        = []byte("(")
+	closeParenBytes       = []byte(")")
+	spaceBytes            = []byte(" ")
+	pointerChainBytes     = []byte("->")
+	nilAngleBytes         = []byte("<nil>")
+	maxNewlineBytes       = []byte("<max depth reached>\n")
+	maxShortBytes         = []byte("<max>")
+	circularBytes         = []byte("<already shown>")
+	circularShortBytes    = []byte("<shown>")
+	invalidAngleBytes     = []byte("<invalid>")
+	openBracketBytes      = []byte("[")
+	closeBracketBytes     = []byte("]")
+	percentBytes          = []byte("%")
+	precisionBytes        = []byte(".")
+	openAngleBytes        = []byte("<")
+	closeAngleBytes       = []byte(">")
+	openMapBytes          = []byte("map[")
+	closeMapBytes         = []byte("]")
+	lenEqualsBytes        = []byte("len=")
+	capEqualsBytes        = []byte("cap=")
+)
+
+// hexDigits is used to map a decimal value to a hex digit.
+var hexDigits = "0123456789abcdef"
+
+// catchPanic handles any panics that might occur during the handleMethods
+// calls.
+func catchPanic(w io.Writer, v reflect.Value) {
+	if err := recover(); err != nil {
+		w.Write(panicBytes)
+		fmt.Fprintf(w, "%v", err)
+		w.Write(closeParenBytes)
+	}
+}
+
+// handleMethods attempts to call the Error and String methods on the underlying
+// type the passed reflect.Value represents and outputes the result to Writer w.
+//
+// It handles panics in any called methods by catching and displaying the error
+// as the formatted value.
+func handleMethods(cs *ConfigState, w io.Writer, v reflect.Value) (handled bool) {
+	// We need an interface to check if the type implements the error or
+	// Stringer interface.  However, the reflect package won't give us an
+	// interface on certain things like unexported struct fields in order
+	// to enforce visibility rules.  We use unsafe, when it's available,
+	// to bypass these restrictions since this package does not mutate the
+	// values.
+	if !v.CanInterface() {
+		if UnsafeDisabled {
+			return false
+		}
+
+		v = unsafeReflectValue(v)
+	}
+
+	// Choose whether or not to do error and Stringer interface lookups against
+	// the base type or a pointer to the base type depending on settings.
+	// Technically calling one of these methods with a pointer receiver can
+	// mutate the value, however, types which choose to satisify an error or
+	// Stringer interface with a pointer receiver should not be mutating their
+	// state inside these interface methods.
+	if !cs.DisablePointerMethods && !UnsafeDisabled && !v.CanAddr() {
+		v = unsafeReflectValue(v)
+	}
+	if v.CanAddr() {
+		v = v.Addr()
+	}
+
+	// Is it an error or Stringer?
+	switch iface := v.Interface().(type) {
+	case error:
+		defer catchPanic(w, v)
+		if cs.ContinueOnMethod {
+			w.Write(openParenBytes)
+			w.Write([]byte(iface.Error()))
+			w.Write(closeParenBytes)
+			w.Write(spaceBytes)
+			return false
+		}
+
+		w.Write([]byte(iface.Error()))
+		return true
+
+	case fmt.Stringer:
+		defer catchPanic(w, v)
+		if cs.ContinueOnMethod {
+			w.Write(openParenBytes)
+			w.Write([]byte(iface.String()))
+			w.Write(closeParenBytes)
+			w.Write(spaceBytes)
+			return false
+		}
+		w.Write([]byte(iface.String()))
+		return true
+	}
+	return false
+}
+
+// printBool outputs a boolean value as true or false to Writer w.
+func printBool(w io.Writer, val bool) {
+	if val {
+		w.Write(trueBytes)
+	} else {
+		w.Write(falseBytes)
+	}
+}
+
+// printInt outputs a signed integer value to Writer w.
+func printInt(w io.Writer, val int64, base int) {
+	w.Write([]byte(strconv.FormatInt(val, base)))
+}
+
+// printUint outputs an unsigned integer value to Writer w.
+func printUint(w io.Writer, val uint64, base int) {
+	w.Write([]byte(strconv.FormatUint(val, base)))
+}
+
+// printFloat outputs a floating point value using the specified precision,
+// which is expected to be 32 or 64bit, to Writer w.
+func printFloat(w io.Writer, val float64, precision int) {
+	w.Write([]byte(strconv.FormatFloat(val, 'g', -1, precision)))
+}
+
+// printComplex outputs a complex value using the specified float precision
+// for the real and imaginary parts to Writer w.
+func printComplex(w io.Writer, c complex128, floatPrecision int) {
+	r := real(c)
+	w.Write(openParenBytes)
+	w.Write([]byte(strconv.FormatFloat(r, 'g', -1, floatPrecision)))
+	i := imag(c)
+	if i >= 0 {
+		w.Write(plusBytes)
+	}
+	w.Write([]byte(strconv.FormatFloat(i, 'g', -1, floatPrecision)))
+	w.Write(iBytes)
+	w.Write(closeParenBytes)
+}
+
+// printHexPtr outputs a uintptr formatted as hexadecimal with a leading '0x'
+// prefix to Writer w.
+func printHexPtr(w io.Writer, p uintptr) {
+	// Null pointer.
+	num := uint64(p)
+	if num == 0 {
+		w.Write(nilAngleBytes)
+		return
+	}
+
+	// Max uint64 is 16 bytes in hex + 2 bytes for '0x' prefix
+	buf := make([]byte, 18)
+
+	// It's simpler to construct the hex string right to left.
+	base := uint64(16)
+	i := len(buf) - 1
+	for num >= base {
+		buf[i] = hexDigits[num%base]
+		num /= base
+		i--
+	}
+	buf[i] = hexDigits[num]
+
+	// Add '0x' prefix.
+	i--
+	buf[i] = 'x'
+	i--
+	buf[i] = '0'
+
+	// Strip unused leading bytes.
+	buf = buf[i:]
+	w.Write(buf)
+}
+
+// valuesSorter implements sort.Interface to allow a slice of reflect.Value
+// elements to be sorted.
+type valuesSorter struct {
+	values  []reflect.Value
+	strings []string // either nil or same len and values
+	cs      *ConfigState
+}
+
+// newValuesSorter initializes a valuesSorter instance, which holds a set of
+// surrogate keys on which the data should be sorted.  It uses flags in
+// ConfigState to decide if and how to populate those surrogate keys.
+func newValuesSorter(values []reflect.Value, cs *ConfigState) sort.Interface {
+	vs := &valuesSorter{values: values, cs: cs}
+	if canSortSimply(vs.values[0].Kind()) {
+		return vs
+	}
+	if !cs.DisableMethods {
+		vs.strings = make([]string, len(values))
+		for i := range vs.values {
+			b := bytes.Buffer{}
+			if !handleMethods(cs, &b, vs.values[i]) {
+				vs.strings = nil
+				break
+			}
+			vs.strings[i] = b.String()
+		}
+	}
+	if vs.strings == nil && cs.SpewKeys {
+		vs.strings = make([]string, len(values))
+		for i := range vs.values {
+			vs.strings[i] = Sprintf("%#v", vs.values[i].Interface())
+		}
+	}
+	return vs
+}
+
+// canSortSimply tests whether a reflect.Kind is a primitive that can be sorted
+// directly, or whether it should be considered for sorting by surrogate keys
+// (if the ConfigState allows it).
+func canSortSimply(kind reflect.Kind) bool {
+	// This switch parallels valueSortLess, except for the default case.
+	switch kind {
+	case reflect.Bool:
+		return true
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		return true
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		return true
+	case reflect.Float32, reflect.Float64:
+		return true
+	case reflect.String:
+		return true
+	case reflect.Uintptr:
+		return true
+	case reflect.Array:
+		return true
+	}
+	return false
+}
+
+// Len returns the number of values in the slice.  It is part of the
+// sort.Interface implementation.
+func (s *valuesSorter) Len() int {
+	return len(s.values)
+}
+
+// Swap swaps the values at the passed indices.  It is part of the
+// sort.Interface implementation.
+func (s *valuesSorter) Swap(i, j int) {
+	s.values[i], s.values[j] = s.values[j], s.values[i]
+	if s.strings != nil {
+		s.strings[i], s.strings[j] = s.strings[j], s.strings[i]
+	}
+}
+
+// valueSortLess returns whether the first value should sort before the second
+// value.  It is used by valueSorter.Less as part of the sort.Interface
+// implementation.
+func valueSortLess(a, b reflect.Value) bool {
+	switch a.Kind() {
+	case reflect.Bool:
+		return !a.Bool() && b.Bool()
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		return a.Int() < b.Int()
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		return a.Uint() < b.Uint()
+	case reflect.Float32, reflect.Float64:
+		return a.Float() < b.Float()
+	case reflect.String:
+		return a.String() < b.String()
+	case reflect.Uintptr:
+		return a.Uint() < b.Uint()
+	case reflect.Array:
+		// Compare the contents of both arrays.
+		l := a.Len()
+		for i := 0; i < l; i++ {
+			av := a.Index(i)
+			bv := b.Index(i)
+			if av.Interface() == bv.Interface() {
+				continue
+			}
+			return valueSortLess(av, bv)
+		}
+	}
+	return a.String() < b.String()
+}
+
+// Less returns whether the value at index i should sort before the
+// value at index j.  It is part of the sort.Interface implementation.
+func (s *valuesSorter) Less(i, j int) bool {
+	if s.strings == nil {
+		return valueSortLess(s.values[i], s.values[j])
+	}
+	return s.strings[i] < s.strings[j]
+}
+
+// sortValues is a sort function that handles both native types and any type that
+// can be converted to error or Stringer.  Other inputs are sorted according to
+// their Value.String() value to ensure display stability.
+func sortValues(values []reflect.Value, cs *ConfigState) {
+	if len(values) == 0 {
+		return
+	}
+	sort.Sort(newValuesSorter(values, cs))
+}

vendor/github.com/davecgh/go-spew/spew/config.go

@@ -0,0 +1,306 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"os"
+)
+
+// ConfigState houses the configuration options used by spew to format and
+// display values.  There is a global instance, Config, that is used to control
+// all top-level Formatter and Dump functionality.  Each ConfigState instance
+// provides methods equivalent to the top-level functions.
+//
+// The zero value for ConfigState provides no indentation.  You would typically
+// want to set it to a space or a tab.
+//
+// Alternatively, you can use NewDefaultConfig to get a ConfigState instance
+// with default settings.  See the documentation of NewDefaultConfig for default
+// values.
+type ConfigState struct {
+	// Indent specifies the string to use for each indentation level.  The
+	// global config instance that all top-level functions use set this to a
+	// single space by default.  If you would like more indentation, you might
+	// set this to a tab with "\t" or perhaps two spaces with "  ".
+	Indent string
+
+	// MaxDepth controls the maximum number of levels to descend into nested
+	// data structures.  The default, 0, means there is no limit.
+	//
+	// NOTE: Circular data structures are properly detected, so it is not
+	// necessary to set this value unless you specifically want to limit deeply
+	// nested data structures.
+	MaxDepth int
+
+	// DisableMethods specifies whether or not error and Stringer interfaces are
+	// invoked for types that implement them.
+	DisableMethods bool
+
+	// DisablePointerMethods specifies whether or not to check for and invoke
+	// error and Stringer interfaces on types which only accept a pointer
+	// receiver when the current type is not a pointer.
+	//
+	// NOTE: This might be an unsafe action since calling one of these methods
+	// with a pointer receiver could technically mutate the value, however,
+	// in practice, types which choose to satisify an error or Stringer
+	// interface with a pointer receiver should not be mutating their state
+	// inside these interface methods.  As a result, this option relies on
+	// access to the unsafe package, so it will not have any effect when
+	// running in environments without access to the unsafe package such as
+	// Google App Engine or with the "safe" build tag specified.
+	DisablePointerMethods bool
+
+	// DisablePointerAddresses specifies whether to disable the printing of
+	// pointer addresses. This is useful when diffing data structures in tests.
+	DisablePointerAddresses bool
+
+	// DisableCapacities specifies whether to disable the printing of capacities
+	// for arrays, slices, maps and channels. This is useful when diffing
+	// data structures in tests.
+	DisableCapacities bool
+
+	// ContinueOnMethod specifies whether or not recursion should continue once
+	// a custom error or Stringer interface is invoked.  The default, false,
+	// means it will print the results of invoking the custom error or Stringer
+	// interface and return immediately instead of continuing to recurse into
+	// the internals of the data type.
+	//
+	// NOTE: This flag does not have any effect if method invocation is disabled
+	// via the DisableMethods or DisablePointerMethods options.
+	ContinueOnMethod bool
+
+	// SortKeys specifies map keys should be sorted before being printed. Use
+	// this to have a more deterministic, diffable output.  Note that only
+	// native types (bool, int, uint, floats, uintptr and string) and types
+	// that support the error or Stringer interfaces (if methods are
+	// enabled) are supported, with other types sorted according to the
+	// reflect.Value.String() output which guarantees display stability.
+	SortKeys bool
+
+	// SpewKeys specifies that, as a last resort attempt, map keys should
+	// be spewed to strings and sorted by those strings.  This is only
+	// considered if SortKeys is true.
+	SpewKeys bool
+}
+
+// Config is the active configuration of the top-level functions.
+// The configuration can be changed by modifying the contents of spew.Config.
+var Config = ConfigState{Indent: " "}
+
+// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the formatted string as a value that satisfies error.  See NewFormatter
+// for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Errorf(format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Errorf(format string, a ...interface{}) (err error) {
+	return fmt.Errorf(format, c.convertArgs(a)...)
+}
+
+// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprint(w, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Fprint(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprint(w, c.convertArgs(a)...)
+}
+
+// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintf(w, format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
+	return fmt.Fprintf(w, format, c.convertArgs(a)...)
+}
+
+// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
+// passed with a Formatter interface returned by c.NewFormatter.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintln(w, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprintln(w, c.convertArgs(a)...)
+}
+
+// Print is a wrapper for fmt.Print that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Print(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Print(a ...interface{}) (n int, err error) {
+	return fmt.Print(c.convertArgs(a)...)
+}
+
+// Printf is a wrapper for fmt.Printf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Printf(format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Printf(format string, a ...interface{}) (n int, err error) {
+	return fmt.Printf(format, c.convertArgs(a)...)
+}
+
+// Println is a wrapper for fmt.Println that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Println(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Println(a ...interface{}) (n int, err error) {
+	return fmt.Println(c.convertArgs(a)...)
+}
+
+// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprint(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Sprint(a ...interface{}) string {
+	return fmt.Sprint(c.convertArgs(a)...)
+}
+
+// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
+// passed with a Formatter interface returned by c.NewFormatter.  It returns
+// the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintf(format, c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Sprintf(format string, a ...interface{}) string {
+	return fmt.Sprintf(format, c.convertArgs(a)...)
+}
+
+// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
+// were passed with a Formatter interface returned by c.NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintln(c.NewFormatter(a), c.NewFormatter(b))
+func (c *ConfigState) Sprintln(a ...interface{}) string {
+	return fmt.Sprintln(c.convertArgs(a)...)
+}
+
+/*
+NewFormatter returns a custom formatter that satisfies the fmt.Formatter
+interface.  As a result, it integrates cleanly with standard fmt package
+printing functions.  The formatter is useful for inline printing of smaller data
+types similar to the standard %v format specifier.
+
+The custom formatter only responds to the %v (most compact), %+v (adds pointer
+addresses), %#v (adds types), and %#+v (adds types and pointer addresses) verb
+combinations.  Any other verbs such as %x and %q will be sent to the the
+standard fmt package for formatting.  In addition, the custom formatter ignores
+the width and precision arguments (however they will still work on the format
+specifiers not handled by the custom formatter).
+
+Typically this function shouldn't be called directly.  It is much easier to make
+use of the custom formatter by calling one of the convenience functions such as
+c.Printf, c.Println, or c.Printf.
+*/
+func (c *ConfigState) NewFormatter(v interface{}) fmt.Formatter {
+	return newFormatter(c, v)
+}
+
+// Fdump formats and displays the passed arguments to io.Writer w.  It formats
+// exactly the same as Dump.
+func (c *ConfigState) Fdump(w io.Writer, a ...interface{}) {
+	fdump(c, w, a...)
+}
+
+/*
+Dump displays the passed parameters to standard out with newlines, customizable
+indentation, and additional debug information such as complete types and all
+pointer addresses used to indirect to the final value.  It provides the
+following features over the built-in printing facilities provided by the fmt
+package:
+
+	* Pointers are dereferenced and followed
+	* Circular data structures are detected and handled properly
+	* Custom Stringer/error interfaces are optionally invoked, including
+	  on unexported types
+	* Custom types which only implement the Stringer/error interfaces via
+	  a pointer receiver are optionally invoked when passing non-pointer
+	  variables
+	* Byte arrays and slices are dumped like the hexdump -C command which
+	  includes offsets, byte values in hex, and ASCII output
+
+The configuration options are controlled by modifying the public members
+of c.  See ConfigState for options documentation.
+
+See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
+get the formatted result as a string.
+*/
+func (c *ConfigState) Dump(a ...interface{}) {
+	fdump(c, os.Stdout, a...)
+}
+
+// Sdump returns a string with the passed arguments formatted exactly the same
+// as Dump.
+func (c *ConfigState) Sdump(a ...interface{}) string {
+	var buf bytes.Buffer
+	fdump(c, &buf, a...)
+	return buf.String()
+}
+
+// convertArgs accepts a slice of arguments and returns a slice of the same
+// length with each argument converted to a spew Formatter interface using
+// the ConfigState associated with s.
+func (c *ConfigState) convertArgs(args []interface{}) (formatters []interface{}) {
+	formatters = make([]interface{}, len(args))
+	for index, arg := range args {
+		formatters[index] = newFormatter(c, arg)
+	}
+	return formatters
+}
+
+// NewDefaultConfig returns a ConfigState with the following default settings.
+//
+// 	Indent: " "
+// 	MaxDepth: 0
+// 	DisableMethods: false
+// 	DisablePointerMethods: false
+// 	ContinueOnMethod: false
+// 	SortKeys: false
+func NewDefaultConfig() *ConfigState {
+	return &ConfigState{Indent: " "}
+}

vendor/github.com/davecgh/go-spew/spew/doc.go

@@ -0,0 +1,211 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+Package spew implements a deep pretty printer for Go data structures to aid in
+debugging.
+
+A quick overview of the additional features spew provides over the built-in
+printing facilities for Go data types are as follows:
+
+	* Pointers are dereferenced and followed
+	* Circular data structures are detected and handled properly
+	* Custom Stringer/error interfaces are optionally invoked, including
+	  on unexported types
+	* Custom types which only implement the Stringer/error interfaces via
+	  a pointer receiver are optionally invoked when passing non-pointer
+	  variables
+	* Byte arrays and slices are dumped like the hexdump -C command which
+	  includes offsets, byte values in hex, and ASCII output (only when using
+	  Dump style)
+
+There are two different approaches spew allows for dumping Go data structures:
+
+	* Dump style which prints with newlines, customizable indentation,
+	  and additional debug information such as types and all pointer addresses
+	  used to indirect to the final value
+	* A custom Formatter interface that integrates cleanly with the standard fmt
+	  package and replaces %v, %+v, %#v, and %#+v to provide inline printing
+	  similar to the default %v while providing the additional functionality
+	  outlined above and passing unsupported format verbs such as %x and %q
+	  along to fmt
+
+Quick Start
+
+This section demonstrates how to quickly get started with spew.  See the
+sections below for further details on formatting and configuration options.
+
+To dump a variable with full newlines, indentation, type, and pointer
+information use Dump, Fdump, or Sdump:
+	spew.Dump(myVar1, myVar2, ...)
+	spew.Fdump(someWriter, myVar1, myVar2, ...)
+	str := spew.Sdump(myVar1, myVar2, ...)
+
+Alternatively, if you would prefer to use format strings with a compacted inline
+printing style, use the convenience wrappers Printf, Fprintf, etc with
+%v (most compact), %+v (adds pointer addresses), %#v (adds types), or
+%#+v (adds types and pointer addresses):
+	spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+	spew.Fprintf(someWriter, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Fprintf(someWriter, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+
+Configuration Options
+
+Configuration of spew is handled by fields in the ConfigState type.  For
+convenience, all of the top-level functions use a global state available
+via the spew.Config global.
+
+It is also possible to create a ConfigState instance that provides methods
+equivalent to the top-level functions.  This allows concurrent configuration
+options.  See the ConfigState documentation for more details.
+
+The following configuration options are available:
+	* Indent
+		String to use for each indentation level for Dump functions.
+		It is a single space by default.  A popular alternative is "\t".
+
+	* MaxDepth
+		Maximum number of levels to descend into nested data structures.
+		There is no limit by default.
+
+	* DisableMethods
+		Disables invocation of error and Stringer interface methods.
+		Method invocation is enabled by default.
+
+	* DisablePointerMethods
+		Disables invocation of error and Stringer interface methods on types
+		which only accept pointer receivers from non-pointer variables.
+		Pointer method invocation is enabled by default.
+
+	* DisablePointerAddresses
+		DisablePointerAddresses specifies whether to disable the printing of
+		pointer addresses. This is useful when diffing data structures in tests.
+
+	* DisableCapacities
+		DisableCapacities specifies whether to disable the printing of
+		capacities for arrays, slices, maps and channels. This is useful when
+		diffing data structures in tests.
+
+	* ContinueOnMethod
+		Enables recursion into types after invoking error and Stringer interface
+		methods. Recursion after method invocation is disabled by default.
+
+	* SortKeys
+		Specifies map keys should be sorted before being printed. Use
+		this to have a more deterministic, diffable output.  Note that
+		only native types (bool, int, uint, floats, uintptr and string)
+		and types which implement error or Stringer interfaces are
+		supported with other types sorted according to the
+		reflect.Value.String() output which guarantees display
+		stability.  Natural map order is used by default.
+
+	* SpewKeys
+		Specifies that, as a last resort attempt, map keys should be
+		spewed to strings and sorted by those strings.  This is only
+		considered if SortKeys is true.
+
+Dump Usage
+
+Simply call spew.Dump with a list of variables you want to dump:
+
+	spew.Dump(myVar1, myVar2, ...)
+
+You may also call spew.Fdump if you would prefer to output to an arbitrary
+io.Writer.  For example, to dump to standard error:
+
+	spew.Fdump(os.Stderr, myVar1, myVar2, ...)
+
+A third option is to call spew.Sdump to get the formatted output as a string:
+
+	str := spew.Sdump(myVar1, myVar2, ...)
+
+Sample Dump Output
+
+See the Dump example for details on the setup of the types and variables being
+shown here.
+
+	(main.Foo) {
+	 unexportedField: (*main.Bar)(0xf84002e210)({
+	  flag: (main.Flag) flagTwo,
+	  data: (uintptr) <nil>
+	 }),
+	 ExportedField: (map[interface {}]interface {}) (len=1) {
+	  (string) (len=3) "one": (bool) true
+	 }
+	}
+
+Byte (and uint8) arrays and slices are displayed uniquely like the hexdump -C
+command as shown.
+	([]uint8) (len=32 cap=32) {
+	 00000000  11 12 13 14 15 16 17 18  19 1a 1b 1c 1d 1e 1f 20  |............... |
+	 00000010  21 22 23 24 25 26 27 28  29 2a 2b 2c 2d 2e 2f 30  |!"#$%&'()*+,-./0|
+	 00000020  31 32                                             |12|
+	}
+
+Custom Formatter
+
+Spew provides a custom formatter that implements the fmt.Formatter interface
+so that it integrates cleanly with standard fmt package printing functions. The
+formatter is useful for inline printing of smaller data types similar to the
+standard %v format specifier.
+
+The custom formatter only responds to the %v (most compact), %+v (adds pointer
+addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
+combinations.  Any other verbs such as %x and %q will be sent to the the
+standard fmt package for formatting.  In addition, the custom formatter ignores
+the width and precision arguments (however they will still work on the format
+specifiers not handled by the custom formatter).
+
+Custom Formatter Usage
+
+The simplest way to make use of the spew custom formatter is to call one of the
+convenience functions such as spew.Printf, spew.Println, or spew.Printf.  The
+functions have syntax you are most likely already familiar with:
+
+	spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+	spew.Println(myVar, myVar2)
+	spew.Fprintf(os.Stderr, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
+	spew.Fprintf(os.Stderr, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
+
+See the Index for the full list convenience functions.
+
+Sample Formatter Output
+
+Double pointer to a uint8:
+	  %v: <**>5
+	 %+v: <**>(0xf8400420d0->0xf8400420c8)5
+	 %#v: (**uint8)5
+	%#+v: (**uint8)(0xf8400420d0->0xf8400420c8)5
+
+Pointer to circular struct with a uint8 field and a pointer to itself:
+	  %v: <*>{1 <*><shown>}
+	 %+v: <*>(0xf84003e260){ui8:1 c:<*>(0xf84003e260)<shown>}
+	 %#v: (*main.circular){ui8:(uint8)1 c:(*main.circular)<shown>}
+	%#+v: (*main.circular)(0xf84003e260){ui8:(uint8)1 c:(*main.circular)(0xf84003e260)<shown>}
+
+See the Printf example for details on the setup of variables being shown
+here.
+
+Errors
+
+Since it is possible for custom Stringer/error interfaces to panic, spew
+detects them and handles them internally by printing the panic information
+inline with the output.  Since spew is intended to provide deep pretty printing
+capabilities on structures, it intentionally does not return any errors.
+*/
+package spew

vendor/github.com/davecgh/go-spew/spew/dump.go

@@ -0,0 +1,509 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"os"
+	"reflect"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+var (
+	// uint8Type is a reflect.Type representing a uint8.  It is used to
+	// convert cgo types to uint8 slices for hexdumping.
+	uint8Type = reflect.TypeOf(uint8(0))
+
+	// cCharRE is a regular expression that matches a cgo char.
+	// It is used to detect character arrays to hexdump them.
+	cCharRE = regexp.MustCompile(`^.*\._Ctype_char$`)
+
+	// cUnsignedCharRE is a regular expression that matches a cgo unsigned
+	// char.  It is used to detect unsigned character arrays to hexdump
+	// them.
+	cUnsignedCharRE = regexp.MustCompile(`^.*\._Ctype_unsignedchar$`)
+
+	// cUint8tCharRE is a regular expression that matches a cgo uint8_t.
+	// It is used to detect uint8_t arrays to hexdump them.
+	cUint8tCharRE = regexp.MustCompile(`^.*\._Ctype_uint8_t$`)
+)
+
+// dumpState contains information about the state of a dump operation.
+type dumpState struct {
+	w                io.Writer
+	depth            int
+	pointers         map[uintptr]int
+	ignoreNextType   bool
+	ignoreNextIndent bool
+	cs               *ConfigState
+}
+
+// indent performs indentation according to the depth level and cs.Indent
+// option.
+func (d *dumpState) indent() {
+	if d.ignoreNextIndent {
+		d.ignoreNextIndent = false
+		return
+	}
+	d.w.Write(bytes.Repeat([]byte(d.cs.Indent), d.depth))
+}
+
+// unpackValue returns values inside of non-nil interfaces when possible.
+// This is useful for data types like structs, arrays, slices, and maps which
+// can contain varying types packed inside an interface.
+func (d *dumpState) unpackValue(v reflect.Value) reflect.Value {
+	if v.Kind() == reflect.Interface && !v.IsNil() {
+		v = v.Elem()
+	}
+	return v
+}
+
+// dumpPtr handles formatting of pointers by indirecting them as necessary.
+func (d *dumpState) dumpPtr(v reflect.Value) {
+	// Remove pointers at or below the current depth from map used to detect
+	// circular refs.
+	for k, depth := range d.pointers {
+		if depth >= d.depth {
+			delete(d.pointers, k)
+		}
+	}
+
+	// Keep list of all dereferenced pointers to show later.
+	pointerChain := make([]uintptr, 0)
+
+	// Figure out how many levels of indirection there are by dereferencing
+	// pointers and unpacking interfaces down the chain while detecting circular
+	// references.
+	nilFound := false
+	cycleFound := false
+	indirects := 0
+	ve := v
+	for ve.Kind() == reflect.Ptr {
+		if ve.IsNil() {
+			nilFound = true
+			break
+		}
+		indirects++
+		addr := ve.Pointer()
+		pointerChain = append(pointerChain, addr)
+		if pd, ok := d.pointers[addr]; ok && pd < d.depth {
+			cycleFound = true
+			indirects--
+			break
+		}
+		d.pointers[addr] = d.depth
+
+		ve = ve.Elem()
+		if ve.Kind() == reflect.Interface {
+			if ve.IsNil() {
+				nilFound = true
+				break
+			}
+			ve = ve.Elem()
+		}
+	}
+
+	// Display type information.
+	d.w.Write(openParenBytes)
+	d.w.Write(bytes.Repeat(asteriskBytes, indirects))
+	d.w.Write([]byte(ve.Type().String()))
+	d.w.Write(closeParenBytes)
+
+	// Display pointer information.
+	if !d.cs.DisablePointerAddresses && len(pointerChain) > 0 {
+		d.w.Write(openParenBytes)
+		for i, addr := range pointerChain {
+			if i > 0 {
+				d.w.Write(pointerChainBytes)
+			}
+			printHexPtr(d.w, addr)
+		}
+		d.w.Write(closeParenBytes)
+	}
+
+	// Display dereferenced value.
+	d.w.Write(openParenBytes)
+	switch {
+	case nilFound:
+		d.w.Write(nilAngleBytes)
+
+	case cycleFound:
+		d.w.Write(circularBytes)
+
+	default:
+		d.ignoreNextType = true
+		d.dump(ve)
+	}
+	d.w.Write(closeParenBytes)
+}
+
+// dumpSlice handles formatting of arrays and slices.  Byte (uint8 under
+// reflection) arrays and slices are dumped in hexdump -C fashion.
+func (d *dumpState) dumpSlice(v reflect.Value) {
+	// Determine whether this type should be hex dumped or not.  Also,
+	// for types which should be hexdumped, try to use the underlying data
+	// first, then fall back to trying to convert them to a uint8 slice.
+	var buf []uint8
+	doConvert := false
+	doHexDump := false
+	numEntries := v.Len()
+	if numEntries > 0 {
+		vt := v.Index(0).Type()
+		vts := vt.String()
+		switch {
+		// C types that need to be converted.
+		case cCharRE.MatchString(vts):
+			fallthrough
+		case cUnsignedCharRE.MatchString(vts):
+			fallthrough
+		case cUint8tCharRE.MatchString(vts):
+			doConvert = true
+
+		// Try to use existing uint8 slices and fall back to converting
+		// and copying if that fails.
+		case vt.Kind() == reflect.Uint8:
+			// We need an addressable interface to convert the type
+			// to a byte slice.  However, the reflect package won't
+			// give us an interface on certain things like
+			// unexported struct fields in order to enforce
+			// visibility rules.  We use unsafe, when available, to
+			// bypass these restrictions since this package does not
+			// mutate the values.
+			vs := v
+			if !vs.CanInterface() || !vs.CanAddr() {
+				vs = unsafeReflectValue(vs)
+			}
+			if !UnsafeDisabled {
+				vs = vs.Slice(0, numEntries)
+
+				// Use the existing uint8 slice if it can be
+				// type asserted.
+				iface := vs.Interface()
+				if slice, ok := iface.([]uint8); ok {
+					buf = slice
+					doHexDump = true
+					break
+				}
+			}
+
+			// The underlying data needs to be converted if it can't
+			// be type asserted to a uint8 slice.
+			doConvert = true
+		}
+
+		// Copy and convert the underlying type if needed.
+		if doConvert && vt.ConvertibleTo(uint8Type) {
+			// Convert and copy each element into a uint8 byte
+			// slice.
+			buf = make([]uint8, numEntries)
+			for i := 0; i < numEntries; i++ {
+				vv := v.Index(i)
+				buf[i] = uint8(vv.Convert(uint8Type).Uint())
+			}
+			doHexDump = true
+		}
+	}
+
+	// Hexdump the entire slice as needed.
+	if doHexDump {
+		indent := strings.Repeat(d.cs.Indent, d.depth)
+		str := indent + hex.Dump(buf)
+		str = strings.Replace(str, "\n", "\n"+indent, -1)
+		str = strings.TrimRight(str, d.cs.Indent)
+		d.w.Write([]byte(str))
+		return
+	}
+
+	// Recursively call dump for each item.
+	for i := 0; i < numEntries; i++ {
+		d.dump(d.unpackValue(v.Index(i)))
+		if i < (numEntries - 1) {
+			d.w.Write(commaNewlineBytes)
+		} else {
+			d.w.Write(newlineBytes)
+		}
+	}
+}
+
+// dump is the main workhorse for dumping a value.  It uses the passed reflect
+// value to figure out what kind of object we are dealing with and formats it
+// appropriately.  It is a recursive function, however circular data structures
+// are detected and handled properly.
+func (d *dumpState) dump(v reflect.Value) {
+	// Handle invalid reflect values immediately.
+	kind := v.Kind()
+	if kind == reflect.Invalid {
+		d.w.Write(invalidAngleBytes)
+		return
+	}
+
+	// Handle pointers specially.
+	if kind == reflect.Ptr {
+		d.indent()
+		d.dumpPtr(v)
+		return
+	}
+
+	// Print type information unless already handled elsewhere.
+	if !d.ignoreNextType {
+		d.indent()
+		d.w.Write(openParenBytes)
+		d.w.Write([]byte(v.Type().String()))
+		d.w.Write(closeParenBytes)
+		d.w.Write(spaceBytes)
+	}
+	d.ignoreNextType = false
+
+	// Display length and capacity if the built-in len and cap functions
+	// work with the value's kind and the len/cap itself is non-zero.
+	valueLen, valueCap := 0, 0
+	switch v.Kind() {
+	case reflect.Array, reflect.Slice, reflect.Chan:
+		valueLen, valueCap = v.Len(), v.Cap()
+	case reflect.Map, reflect.String:
+		valueLen = v.Len()
+	}
+	if valueLen != 0 || !d.cs.DisableCapacities && valueCap != 0 {
+		d.w.Write(openParenBytes)
+		if valueLen != 0 {
+			d.w.Write(lenEqualsBytes)
+			printInt(d.w, int64(valueLen), 10)
+		}
+		if !d.cs.DisableCapacities && valueCap != 0 {
+			if valueLen != 0 {
+				d.w.Write(spaceBytes)
+			}
+			d.w.Write(capEqualsBytes)
+			printInt(d.w, int64(valueCap), 10)
+		}
+		d.w.Write(closeParenBytes)
+		d.w.Write(spaceBytes)
+	}
+
+	// Call Stringer/error interfaces if they exist and the handle methods flag
+	// is enabled
+	if !d.cs.DisableMethods {
+		if (kind != reflect.Invalid) && (kind != reflect.Interface) {
+			if handled := handleMethods(d.cs, d.w, v); handled {
+				return
+			}
+		}
+	}
+
+	switch kind {
+	case reflect.Invalid:
+		// Do nothing.  We should never get here since invalid has already
+		// been handled above.
+
+	case reflect.Bool:
+		printBool(d.w, v.Bool())
+
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		printInt(d.w, v.Int(), 10)
+
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		printUint(d.w, v.Uint(), 10)
+
+	case reflect.Float32:
+		printFloat(d.w, v.Float(), 32)
+
+	case reflect.Float64:
+		printFloat(d.w, v.Float(), 64)
+
+	case reflect.Complex64:
+		printComplex(d.w, v.Complex(), 32)
+
+	case reflect.Complex128:
+		printComplex(d.w, v.Complex(), 64)
+
+	case reflect.Slice:
+		if v.IsNil() {
+			d.w.Write(nilAngleBytes)
+			break
+		}
+		fallthrough
+
+	case reflect.Array:
+		d.w.Write(openBraceNewlineBytes)
+		d.depth++
+		if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
+			d.indent()
+			d.w.Write(maxNewlineBytes)
+		} else {
+			d.dumpSlice(v)
+		}
+		d.depth--
+		d.indent()
+		d.w.Write(closeBraceBytes)
+
+	case reflect.String:
+		d.w.Write([]byte(strconv.Quote(v.String())))
+
+	case reflect.Interface:
+		// The only time we should get here is for nil interfaces due to
+		// unpackValue calls.
+		if v.IsNil() {
+			d.w.Write(nilAngleBytes)
+		}
+
+	case reflect.Ptr:
+		// Do nothing.  We should never get here since pointers have already
+		// been handled above.
+
+	case reflect.Map:
+		// nil maps should be indicated as different than empty maps
+		if v.IsNil() {
+			d.w.Write(nilAngleBytes)
+			break
+		}
+
+		d.w.Write(openBraceNewlineBytes)
+		d.depth++
+		if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
+			d.indent()
+			d.w.Write(maxNewlineBytes)
+		} else {
+			numEntries := v.Len()
+			keys := v.MapKeys()
+			if d.cs.SortKeys {
+				sortValues(keys, d.cs)
+			}
+			for i, key := range keys {
+				d.dump(d.unpackValue(key))
+				d.w.Write(colonSpaceBytes)
+				d.ignoreNextIndent = true
+				d.dump(d.unpackValue(v.MapIndex(key)))
+				if i < (numEntries - 1) {
+					d.w.Write(commaNewlineBytes)
+				} else {
+					d.w.Write(newlineBytes)
+				}
+			}
+		}
+		d.depth--
+		d.indent()
+		d.w.Write(closeBraceBytes)
+
+	case reflect.Struct:
+		d.w.Write(openBraceNewlineBytes)
+		d.depth++
+		if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
+			d.indent()
+			d.w.Write(maxNewlineBytes)
+		} else {
+			vt := v.Type()
+			numFields := v.NumField()
+			for i := 0; i < numFields; i++ {
+				d.indent()
+				vtf := vt.Field(i)
+				d.w.Write([]byte(vtf.Name))
+				d.w.Write(colonSpaceBytes)
+				d.ignoreNextIndent = true
+				d.dump(d.unpackValue(v.Field(i)))
+				if i < (numFields - 1) {
+					d.w.Write(commaNewlineBytes)
+				} else {
+					d.w.Write(newlineBytes)
+				}
+			}
+		}
+		d.depth--
+		d.indent()
+		d.w.Write(closeBraceBytes)
+
+	case reflect.Uintptr:
+		printHexPtr(d.w, uintptr(v.Uint()))
+
+	case reflect.UnsafePointer, reflect.Chan, reflect.Func:
+		printHexPtr(d.w, v.Pointer())
+
+	// There were not any other types at the time this code was written, but
+	// fall back to letting the default fmt package handle it in case any new
+	// types are added.
+	default:
+		if v.CanInterface() {
+			fmt.Fprintf(d.w, "%v", v.Interface())
+		} else {
+			fmt.Fprintf(d.w, "%v", v.String())
+		}
+	}
+}
+
+// fdump is a helper function to consolidate the logic from the various public
+// methods which take varying writers and config states.
+func fdump(cs *ConfigState, w io.Writer, a ...interface{}) {
+	for _, arg := range a {
+		if arg == nil {
+			w.Write(interfaceBytes)
+			w.Write(spaceBytes)
+			w.Write(nilAngleBytes)
+			w.Write(newlineBytes)
+			continue
+		}
+
+		d := dumpState{w: w, cs: cs}
+		d.pointers = make(map[uintptr]int)
+		d.dump(reflect.ValueOf(arg))
+		d.w.Write(newlineBytes)
+	}
+}
+
+// Fdump formats and displays the passed arguments to io.Writer w.  It formats
+// exactly the same as Dump.
+func Fdump(w io.Writer, a ...interface{}) {
+	fdump(&Config, w, a...)
+}
+
+// Sdump returns a string with the passed arguments formatted exactly the same
+// as Dump.
+func Sdump(a ...interface{}) string {
+	var buf bytes.Buffer
+	fdump(&Config, &buf, a...)
+	return buf.String()
+}
+
+/*
+Dump displays the passed parameters to standard out with newlines, customizable
+indentation, and additional debug information such as complete types and all
+pointer addresses used to indirect to the final value.  It provides the
+following features over the built-in printing facilities provided by the fmt
+package:
+
+	* Pointers are dereferenced and followed
+	* Circular data structures are detected and handled properly
+	* Custom Stringer/error interfaces are optionally invoked, including
+	  on unexported types
+	* Custom types which only implement the Stringer/error interfaces via
+	  a pointer receiver are optionally invoked when passing non-pointer
+	  variables
+	* Byte arrays and slices are dumped like the hexdump -C command which
+	  includes offsets, byte values in hex, and ASCII output
+
+The configuration options are controlled by an exported package global,
+spew.Config.  See ConfigState for options documentation.
+
+See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
+get the formatted result as a string.
+*/
+func Dump(a ...interface{}) {
+	fdump(&Config, os.Stdout, a...)
+}

vendor/github.com/davecgh/go-spew/spew/format.go

@@ -0,0 +1,419 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"bytes"
+	"fmt"
+	"reflect"
+	"strconv"
+	"strings"
+)
+
+// supportedFlags is a list of all the character flags supported by fmt package.
+const supportedFlags = "0-+# "
+
+// formatState implements the fmt.Formatter interface and contains information
+// about the state of a formatting operation.  The NewFormatter function can
+// be used to get a new Formatter which can be used directly as arguments
+// in standard fmt package printing calls.
+type formatState struct {
+	value          interface{}
+	fs             fmt.State
+	depth          int
+	pointers       map[uintptr]int
+	ignoreNextType bool
+	cs             *ConfigState
+}
+
+// buildDefaultFormat recreates the original format string without precision
+// and width information to pass in to fmt.Sprintf in the case of an
+// unrecognized type.  Unless new types are added to the language, this
+// function won't ever be called.
+func (f *formatState) buildDefaultFormat() (format string) {
+	buf := bytes.NewBuffer(percentBytes)
+
+	for _, flag := range supportedFlags {
+		if f.fs.Flag(int(flag)) {
+			buf.WriteRune(flag)
+		}
+	}
+
+	buf.WriteRune('v')
+
+	format = buf.String()
+	return format
+}
+
+// constructOrigFormat recreates the original format string including precision
+// and width information to pass along to the standard fmt package.  This allows
+// automatic deferral of all format strings this package doesn't support.
+func (f *formatState) constructOrigFormat(verb rune) (format string) {
+	buf := bytes.NewBuffer(percentBytes)
+
+	for _, flag := range supportedFlags {
+		if f.fs.Flag(int(flag)) {
+			buf.WriteRune(flag)
+		}
+	}
+
+	if width, ok := f.fs.Width(); ok {
+		buf.WriteString(strconv.Itoa(width))
+	}
+
+	if precision, ok := f.fs.Precision(); ok {
+		buf.Write(precisionBytes)
+		buf.WriteString(strconv.Itoa(precision))
+	}
+
+	buf.WriteRune(verb)
+
+	format = buf.String()
+	return format
+}
+
+// unpackValue returns values inside of non-nil interfaces when possible and
+// ensures that types for values which have been unpacked from an interface
+// are displayed when the show types flag is also set.
+// This is useful for data types like structs, arrays, slices, and maps which
+// can contain varying types packed inside an interface.
+func (f *formatState) unpackValue(v reflect.Value) reflect.Value {
+	if v.Kind() == reflect.Interface {
+		f.ignoreNextType = false
+		if !v.IsNil() {
+			v = v.Elem()
+		}
+	}
+	return v
+}
+
+// formatPtr handles formatting of pointers by indirecting them as necessary.
+func (f *formatState) formatPtr(v reflect.Value) {
+	// Display nil if top level pointer is nil.
+	showTypes := f.fs.Flag('#')
+	if v.IsNil() && (!showTypes || f.ignoreNextType) {
+		f.fs.Write(nilAngleBytes)
+		return
+	}
+
+	// Remove pointers at or below the current depth from map used to detect
+	// circular refs.
+	for k, depth := range f.pointers {
+		if depth >= f.depth {
+			delete(f.pointers, k)
+		}
+	}
+
+	// Keep list of all dereferenced pointers to possibly show later.
+	pointerChain := make([]uintptr, 0)
+
+	// Figure out how many levels of indirection there are by derferencing
+	// pointers and unpacking interfaces down the chain while detecting circular
+	// references.
+	nilFound := false
+	cycleFound := false
+	indirects := 0
+	ve := v
+	for ve.Kind() == reflect.Ptr {
+		if ve.IsNil() {
+			nilFound = true
+			break
+		}
+		indirects++
+		addr := ve.Pointer()
+		pointerChain = append(pointerChain, addr)
+		if pd, ok := f.pointers[addr]; ok && pd < f.depth {
+			cycleFound = true
+			indirects--
+			break
+		}
+		f.pointers[addr] = f.depth
+
+		ve = ve.Elem()
+		if ve.Kind() == reflect.Interface {
+			if ve.IsNil() {
+				nilFound = true
+				break
+			}
+			ve = ve.Elem()
+		}
+	}
+
+	// Display type or indirection level depending on flags.
+	if showTypes && !f.ignoreNextType {
+		f.fs.Write(openParenBytes)
+		f.fs.Write(bytes.Repeat(asteriskBytes, indirects))
+		f.fs.Write([]byte(ve.Type().String()))
+		f.fs.Write(closeParenBytes)
+	} else {
+		if nilFound || cycleFound {
+			indirects += strings.Count(ve.Type().String(), "*")
+		}
+		f.fs.Write(openAngleBytes)
+		f.fs.Write([]byte(strings.Repeat("*", indirects)))
+		f.fs.Write(closeAngleBytes)
+	}
+
+	// Display pointer information depending on flags.
+	if f.fs.Flag('+') && (len(pointerChain) > 0) {
+		f.fs.Write(openParenBytes)
+		for i, addr := range pointerChain {
+			if i > 0 {
+				f.fs.Write(pointerChainBytes)
+			}
+			printHexPtr(f.fs, addr)
+		}
+		f.fs.Write(closeParenBytes)
+	}
+
+	// Display dereferenced value.
+	switch {
+	case nilFound:
+		f.fs.Write(nilAngleBytes)
+
+	case cycleFound:
+		f.fs.Write(circularShortBytes)
+
+	default:
+		f.ignoreNextType = true
+		f.format(ve)
+	}
+}
+
+// format is the main workhorse for providing the Formatter interface.  It
+// uses the passed reflect value to figure out what kind of object we are
+// dealing with and formats it appropriately.  It is a recursive function,
+// however circular data structures are detected and handled properly.
+func (f *formatState) format(v reflect.Value) {
+	// Handle invalid reflect values immediately.
+	kind := v.Kind()
+	if kind == reflect.Invalid {
+		f.fs.Write(invalidAngleBytes)
+		return
+	}
+
+	// Handle pointers specially.
+	if kind == reflect.Ptr {
+		f.formatPtr(v)
+		return
+	}
+
+	// Print type information unless already handled elsewhere.
+	if !f.ignoreNextType && f.fs.Flag('#') {
+		f.fs.Write(openParenBytes)
+		f.fs.Write([]byte(v.Type().String()))
+		f.fs.Write(closeParenBytes)
+	}
+	f.ignoreNextType = false
+
+	// Call Stringer/error interfaces if they exist and the handle methods
+	// flag is enabled.
+	if !f.cs.DisableMethods {
+		if (kind != reflect.Invalid) && (kind != reflect.Interface) {
+			if handled := handleMethods(f.cs, f.fs, v); handled {
+				return
+			}
+		}
+	}
+
+	switch kind {
+	case reflect.Invalid:
+		// Do nothing.  We should never get here since invalid has already
+		// been handled above.
+
+	case reflect.Bool:
+		printBool(f.fs, v.Bool())
+
+	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
+		printInt(f.fs, v.Int(), 10)
+
+	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
+		printUint(f.fs, v.Uint(), 10)
+
+	case reflect.Float32:
+		printFloat(f.fs, v.Float(), 32)
+
+	case reflect.Float64:
+		printFloat(f.fs, v.Float(), 64)
+
+	case reflect.Complex64:
+		printComplex(f.fs, v.Complex(), 32)
+
+	case reflect.Complex128:
+		printComplex(f.fs, v.Complex(), 64)
+
+	case reflect.Slice:
+		if v.IsNil() {
+			f.fs.Write(nilAngleBytes)
+			break
+		}
+		fallthrough
+
+	case reflect.Array:
+		f.fs.Write(openBracketBytes)
+		f.depth++
+		if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
+			f.fs.Write(maxShortBytes)
+		} else {
+			numEntries := v.Len()
+			for i := 0; i < numEntries; i++ {
+				if i > 0 {
+					f.fs.Write(spaceBytes)
+				}
+				f.ignoreNextType = true
+				f.format(f.unpackValue(v.Index(i)))
+			}
+		}
+		f.depth--
+		f.fs.Write(closeBracketBytes)
+
+	case reflect.String:
+		f.fs.Write([]byte(v.String()))
+
+	case reflect.Interface:
+		// The only time we should get here is for nil interfaces due to
+		// unpackValue calls.
+		if v.IsNil() {
+			f.fs.Write(nilAngleBytes)
+		}
+
+	case reflect.Ptr:
+		// Do nothing.  We should never get here since pointers have already
+		// been handled above.
+
+	case reflect.Map:
+		// nil maps should be indicated as different than empty maps
+		if v.IsNil() {
+			f.fs.Write(nilAngleBytes)
+			break
+		}
+
+		f.fs.Write(openMapBytes)
+		f.depth++
+		if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
+			f.fs.Write(maxShortBytes)
+		} else {
+			keys := v.MapKeys()
+			if f.cs.SortKeys {
+				sortValues(keys, f.cs)
+			}
+			for i, key := range keys {
+				if i > 0 {
+					f.fs.Write(spaceBytes)
+				}
+				f.ignoreNextType = true
+				f.format(f.unpackValue(key))
+				f.fs.Write(colonBytes)
+				f.ignoreNextType = true
+				f.format(f.unpackValue(v.MapIndex(key)))
+			}
+		}
+		f.depth--
+		f.fs.Write(closeMapBytes)
+
+	case reflect.Struct:
+		numFields := v.NumField()
+		f.fs.Write(openBraceBytes)
+		f.depth++
+		if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
+			f.fs.Write(maxShortBytes)
+		} else {
+			vt := v.Type()
+			for i := 0; i < numFields; i++ {
+				if i > 0 {
+					f.fs.Write(spaceBytes)
+				}
+				vtf := vt.Field(i)
+				if f.fs.Flag('+') || f.fs.Flag('#') {
+					f.fs.Write([]byte(vtf.Name))
+					f.fs.Write(colonBytes)
+				}
+				f.format(f.unpackValue(v.Field(i)))
+			}
+		}
+		f.depth--
+		f.fs.Write(closeBraceBytes)
+
+	case reflect.Uintptr:
+		printHexPtr(f.fs, uintptr(v.Uint()))
+
+	case reflect.UnsafePointer, reflect.Chan, reflect.Func:
+		printHexPtr(f.fs, v.Pointer())
+
+	// There were not any other types at the time this code was written, but
+	// fall back to letting the default fmt package handle it if any get added.
+	default:
+		format := f.buildDefaultFormat()
+		if v.CanInterface() {
+			fmt.Fprintf(f.fs, format, v.Interface())
+		} else {
+			fmt.Fprintf(f.fs, format, v.String())
+		}
+	}
+}
+
+// Format satisfies the fmt.Formatter interface. See NewFormatter for usage
+// details.
+func (f *formatState) Format(fs fmt.State, verb rune) {
+	f.fs = fs
+
+	// Use standard formatting for verbs that are not v.
+	if verb != 'v' {
+		format := f.constructOrigFormat(verb)
+		fmt.Fprintf(fs, format, f.value)
+		return
+	}
+
+	if f.value == nil {
+		if fs.Flag('#') {
+			fs.Write(interfaceBytes)
+		}
+		fs.Write(nilAngleBytes)
+		return
+	}
+
+	f.format(reflect.ValueOf(f.value))
+}
+
+// newFormatter is a helper function to consolidate the logic from the various
+// public methods which take varying config states.
+func newFormatter(cs *ConfigState, v interface{}) fmt.Formatter {
+	fs := &formatState{value: v, cs: cs}
+	fs.pointers = make(map[uintptr]int)
+	return fs
+}
+
+/*
+NewFormatter returns a custom formatter that satisfies the fmt.Formatter
+interface.  As a result, it integrates cleanly with standard fmt package
+printing functions.  The formatter is useful for inline printing of smaller data
+types similar to the standard %v format specifier.
+
+The custom formatter only responds to the %v (most compact), %+v (adds pointer
+addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
+combinations.  Any other verbs such as %x and %q will be sent to the the
+standard fmt package for formatting.  In addition, the custom formatter ignores
+the width and precision arguments (however they will still work on the format
+specifiers not handled by the custom formatter).
+
+Typically this function shouldn't be called directly.  It is much easier to make
+use of the custom formatter by calling one of the convenience functions such as
+Printf, Println, or Fprintf.
+*/
+func NewFormatter(v interface{}) fmt.Formatter {
+	return newFormatter(&Config, v)
+}

vendor/github.com/davecgh/go-spew/spew/spew.go

@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+package spew
+
+import (
+	"fmt"
+	"io"
+)
+
+// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the formatted string as a value that satisfies error.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Errorf(format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Errorf(format string, a ...interface{}) (err error) {
+	return fmt.Errorf(format, convertArgs(a)...)
+}
+
+// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprint(w, spew.NewFormatter(a), spew.NewFormatter(b))
+func Fprint(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprint(w, convertArgs(a)...)
+}
+
+// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintf(w, format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
+	return fmt.Fprintf(w, format, convertArgs(a)...)
+}
+
+// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
+// passed with a default Formatter interface returned by NewFormatter.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Fprintln(w, spew.NewFormatter(a), spew.NewFormatter(b))
+func Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
+	return fmt.Fprintln(w, convertArgs(a)...)
+}
+
+// Print is a wrapper for fmt.Print that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Print(spew.NewFormatter(a), spew.NewFormatter(b))
+func Print(a ...interface{}) (n int, err error) {
+	return fmt.Print(convertArgs(a)...)
+}
+
+// Printf is a wrapper for fmt.Printf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Printf(format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Printf(format string, a ...interface{}) (n int, err error) {
+	return fmt.Printf(format, convertArgs(a)...)
+}
+
+// Println is a wrapper for fmt.Println that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the number of bytes written and any write error encountered.  See
+// NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Println(spew.NewFormatter(a), spew.NewFormatter(b))
+func Println(a ...interface{}) (n int, err error) {
+	return fmt.Println(convertArgs(a)...)
+}
+
+// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprint(spew.NewFormatter(a), spew.NewFormatter(b))
+func Sprint(a ...interface{}) string {
+	return fmt.Sprint(convertArgs(a)...)
+}
+
+// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
+// passed with a default Formatter interface returned by NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintf(format, spew.NewFormatter(a), spew.NewFormatter(b))
+func Sprintf(format string, a ...interface{}) string {
+	return fmt.Sprintf(format, convertArgs(a)...)
+}
+
+// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
+// were passed with a default Formatter interface returned by NewFormatter.  It
+// returns the resulting string.  See NewFormatter for formatting details.
+//
+// This function is shorthand for the following syntax:
+//
+//	fmt.Sprintln(spew.NewFormatter(a), spew.NewFormatter(b))
+func Sprintln(a ...interface{}) string {
+	return fmt.Sprintln(convertArgs(a)...)
+}
+
+// convertArgs accepts a slice of arguments and returns a slice of the same
+// length with each argument converted to a default spew Formatter interface.
+func convertArgs(args []interface{}) (formatters []interface{}) {
+	formatters = make([]interface{}, len(args))
+	for index, arg := range args {
+		formatters[index] = NewFormatter(arg)
+	}
+	return formatters
+}