feat(alerting): Add new providers for Datadog, IFTTT, Line, NewRelic, Plivo, RocketChat, SendGrid, Signal, SIGNL4, Splunk, Squadcast, Vonage, Webex and Zapier (#1224)
* feat(alerting): Add new providers for Datadog, IFTTT, Line, NewRelic, Plivo, RocketChat, SendGrid, Signal, SIGNL4, Splunk, Squadcast, Vonage, Webex and Zapier Relevant: https://github.com/TwiN/gatus/discussions/1223 Fixes #1073 Fixes #1074 * chore: Clean up code * docs: Fix table formatting * Update alerting/provider/datadog/datadog.go * Update alerting/provider/signal/signal.go * Update alerting/provider/ifttt/ifttt.go * Update alerting/provider/newrelic/newrelic.go * Update alerting/provider/squadcast/squadcast.go * Update alerting/provider/squadcast/squadcast.go
This commit is contained in:
TwiN
192
alerting/provider/signal/signal.go
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192
alerting/provider/signal/signal.go
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package signal
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import (
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"bytes"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"net/http"
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"github.com/TwiN/gatus/v5/alerting/alert"
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"github.com/TwiN/gatus/v5/client"
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"github.com/TwiN/gatus/v5/config/endpoint"
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"gopkg.in/yaml.v3"
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)
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var (
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ErrApiURLNotSet = errors.New("api-url not set")
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ErrNumberNotSet = errors.New("number not set")
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ErrRecipientsNotSet = errors.New("recipients not set")
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ErrDuplicateGroupOverride = errors.New("duplicate group override")
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)
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type Config struct {
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ApiURL string `yaml:"api-url"` // Signal API URL (e.g., signal-cli-rest-api instance)
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Number string `yaml:"number"` // Sender phone number
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Recipients []string `yaml:"recipients"` // List of recipient phone numbers
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}
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func (cfg *Config) Validate() error {
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if len(cfg.ApiURL) == 0 {
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return ErrApiURLNotSet
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}
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if len(cfg.Number) == 0 {
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return ErrNumberNotSet
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}
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if len(cfg.Recipients) == 0 {
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return ErrRecipientsNotSet
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}
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return nil
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}
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func (cfg *Config) Merge(override *Config) {
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if len(override.ApiURL) > 0 {
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cfg.ApiURL = override.ApiURL
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}
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if len(override.Number) > 0 {
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cfg.Number = override.Number
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}
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if len(override.Recipients) > 0 {
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cfg.Recipients = override.Recipients
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}
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}
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// AlertProvider is the configuration necessary for sending an alert using Signal
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type AlertProvider struct {
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DefaultConfig Config `yaml:",inline"`
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// DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type
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DefaultAlert *alert.Alert `yaml:"default-alert,omitempty"`
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// Overrides is a list of Override that may be prioritized over the default configuration
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Overrides []Override `yaml:"overrides,omitempty"`
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}
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// Override is a case under which the default integration is overridden
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type Override struct {
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Group string `yaml:"group"`
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Config `yaml:",inline"`
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}
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// Validate the provider's configuration
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func (provider *AlertProvider) Validate() error {
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registeredGroups := make(map[string]bool)
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if provider.Overrides != nil {
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for _, override := range provider.Overrides {
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if isAlreadyRegistered := registeredGroups[override.Group]; isAlreadyRegistered || override.Group == "" {
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return ErrDuplicateGroupOverride
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}
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registeredGroups[override.Group] = true
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}
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}
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return provider.DefaultConfig.Validate()
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}
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// Send an alert using the provider
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func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) error {
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cfg, err := provider.GetConfig(ep.Group, alert)
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if err != nil {
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return err
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}
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for _, recipient := range cfg.Recipients {
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body, err := provider.buildRequestBody(cfg, ep, alert, result, resolved, recipient)
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if err != nil {
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return err
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}
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buffer := bytes.NewBuffer(body)
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request, err := http.NewRequest(http.MethodPost, fmt.Sprintf("%s/v2/send", cfg.ApiURL), buffer)
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if err != nil {
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return err
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}
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request.Header.Set("Content-Type", "application/json")
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response, err := client.GetHTTPClient(nil).Do(request)
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if err != nil {
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return err
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}
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if response.StatusCode >= 400 {
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body, _ := io.ReadAll(response.Body)
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response.Body.Close()
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return fmt.Errorf("call to signal alert returned status code %d: %s", response.StatusCode, string(body))
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}
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response.Body.Close()
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}
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return nil
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}
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type Body struct {
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Message string `json:"message"`
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Number string `json:"number"`
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Recipients []string `json:"recipients"`
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}
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// buildRequestBody builds the request body for the provider
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func (provider *AlertProvider) buildRequestBody(cfg *Config, ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool, recipient string) ([]byte, error) {
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var message string
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if resolved {
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message = fmt.Sprintf("🟢 RESOLVED: %s\nAlert has been resolved after passing successfully %d time(s) in a row", ep.DisplayName(), alert.SuccessThreshold)
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} else {
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message = fmt.Sprintf("🔴 ALERT: %s\nEndpoint has failed %d time(s) in a row", ep.DisplayName(), alert.FailureThreshold)
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}
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if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
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message += fmt.Sprintf("\n\nDescription: %s", alertDescription)
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}
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if len(result.ConditionResults) > 0 {
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message += "\n\nCondition results:"
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for _, conditionResult := range result.ConditionResults {
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var status string
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if conditionResult.Success {
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status = "✅"
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} else {
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status = "❌"
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}
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message += fmt.Sprintf("\n%s %s", status, conditionResult.Condition)
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}
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}
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body := Body{
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Message: message,
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Number: cfg.Number,
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Recipients: []string{recipient},
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}
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bodyAsJSON, err := json.Marshal(body)
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if err != nil {
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return nil, err
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}
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return bodyAsJSON, nil
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}
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// GetDefaultAlert returns the provider's default alert configuration
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func (provider *AlertProvider) GetDefaultAlert() *alert.Alert {
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return provider.DefaultAlert
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}
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// GetConfig returns the configuration for the provider with the overrides applied
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func (provider *AlertProvider) GetConfig(group string, alert *alert.Alert) (*Config, error) {
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cfg := provider.DefaultConfig
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// Handle group overrides
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if provider.Overrides != nil {
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for _, override := range provider.Overrides {
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if group == override.Group {
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cfg.Merge(&override.Config)
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break
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}
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}
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}
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// Handle alert overrides
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if len(alert.ProviderOverride) != 0 {
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overrideConfig := Config{}
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if err := yaml.Unmarshal(alert.ProviderOverrideAsBytes(), &overrideConfig); err != nil {
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return nil, err
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}
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cfg.Merge(&overrideConfig)
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}
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// Validate the configuration
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err := cfg.Validate()
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return &cfg, err
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}
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// ValidateOverrides validates the alert's provider override and, if present, the group override
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func (provider *AlertProvider) ValidateOverrides(group string, alert *alert.Alert) error {
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_, err := provider.GetConfig(group, alert)
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return err
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}
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151
alerting/provider/signal/signal_test.go
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151
alerting/provider/signal/signal_test.go
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@@ -0,0 +1,151 @@
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package signal
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import (
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"encoding/json"
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"net/http"
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"strings"
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"testing"
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"github.com/TwiN/gatus/v5/alerting/alert"
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"github.com/TwiN/gatus/v5/client"
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"github.com/TwiN/gatus/v5/config/endpoint"
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"github.com/TwiN/gatus/v5/test"
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)
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func TestAlertProvider_Validate(t *testing.T) {
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scenarios := []struct {
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name string
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provider AlertProvider
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expected error
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}{
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{
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name: "valid",
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provider: AlertProvider{DefaultConfig: Config{ApiURL: "http://localhost:8080", Number: "+1234567890", Recipients: []string{"+0987654321"}}},
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expected: nil,
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},
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{
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name: "invalid-api-url",
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provider: AlertProvider{DefaultConfig: Config{Number: "+1234567890", Recipients: []string{"+0987654321"}}},
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expected: ErrApiURLNotSet,
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},
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{
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name: "invalid-number",
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provider: AlertProvider{DefaultConfig: Config{ApiURL: "http://localhost:8080", Recipients: []string{"+0987654321"}}},
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expected: ErrNumberNotSet,
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},
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{
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name: "invalid-recipients",
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provider: AlertProvider{DefaultConfig: Config{ApiURL: "http://localhost:8080", Number: "+1234567890"}},
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expected: ErrRecipientsNotSet,
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},
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}
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for _, scenario := range scenarios {
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t.Run(scenario.name, func(t *testing.T) {
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err := scenario.provider.Validate()
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if err != scenario.expected {
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t.Errorf("expected %v, got %v", scenario.expected, err)
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}
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})
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}
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}
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func TestAlertProvider_Send(t *testing.T) {
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defer client.InjectHTTPClient(nil)
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firstDescription := "description-1"
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secondDescription := "description-2"
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scenarios := []struct {
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name string
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provider AlertProvider
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alert alert.Alert
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resolved bool
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mockRoundTripper test.MockRoundTripper
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expectedError bool
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}{
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{
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name: "triggered",
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provider: AlertProvider{DefaultConfig: Config{ApiURL: "http://localhost:8080", Number: "+1234567890", Recipients: []string{"+0987654321", "+1111111111"}}},
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alert: alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
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resolved: false,
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mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
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if r.URL.Path != "/v2/send" {
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t.Errorf("expected path /v2/send, got %s", r.URL.Path)
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}
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body := make(map[string]interface{})
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json.NewDecoder(r.Body).Decode(&body)
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if body["number"] != "+1234567890" {
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t.Errorf("expected number to be '+1234567890', got %v", body["number"])
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}
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recipients := body["recipients"].([]interface{})
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if len(recipients) != 1 {
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t.Errorf("expected 1 recipient per request, got %d", len(recipients))
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}
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message := body["message"].(string)
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if !strings.Contains(message, "ALERT") {
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t.Errorf("expected message to contain 'ALERT', got %s", message)
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}
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if !strings.Contains(message, "failed 3 time(s)") {
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t.Errorf("expected message to contain failure count, got %s", message)
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}
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return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
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}),
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expectedError: false,
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},
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{
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name: "resolved",
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provider: AlertProvider{DefaultConfig: Config{ApiURL: "http://localhost:8080", Number: "+1234567890", Recipients: []string{"+0987654321"}}},
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alert: alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
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resolved: true,
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mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
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body := make(map[string]interface{})
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json.NewDecoder(r.Body).Decode(&body)
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message := body["message"].(string)
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if !strings.Contains(message, "RESOLVED") {
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t.Errorf("expected message to contain 'RESOLVED', got %s", message)
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}
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return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}
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}),
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expectedError: false,
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},
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{
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name: "error-response",
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provider: AlertProvider{DefaultConfig: Config{ApiURL: "http://localhost:8080", Number: "+1234567890", Recipients: []string{"+0987654321"}}},
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alert: alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
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resolved: false,
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mockRoundTripper: test.MockRoundTripper(func(r *http.Request) *http.Response {
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return &http.Response{StatusCode: http.StatusInternalServerError, Body: http.NoBody}
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}),
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expectedError: true,
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},
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}
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for _, scenario := range scenarios {
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t.Run(scenario.name, func(t *testing.T) {
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client.InjectHTTPClient(&http.Client{Transport: scenario.mockRoundTripper})
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err := scenario.provider.Send(
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&endpoint.Endpoint{Name: "endpoint-name"},
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&scenario.alert,
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&endpoint.Result{
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ConditionResults: []*endpoint.ConditionResult{
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{Condition: "[CONNECTED] == true", Success: scenario.resolved},
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{Condition: "[STATUS] == 200", Success: scenario.resolved},
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},
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},
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scenario.resolved,
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)
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if scenario.expectedError && err == nil {
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t.Error("expected error, got none")
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}
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if !scenario.expectedError && err != nil {
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t.Error("expected no error, got", err.Error())
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}
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})
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}
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}
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func TestAlertProvider_GetDefaultAlert(t *testing.T) {
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if (&AlertProvider{DefaultAlert: &alert.Alert{}}).GetDefaultAlert() == nil {
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t.Error("expected default alert to be not nil")
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}
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if (&AlertProvider{DefaultAlert: nil}).GetDefaultAlert() != nil {
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t.Error("expected default alert to be nil")
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}
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}
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