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feat(alerting): Implement new Teams Workflow alert #847
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fb6a71e
POC Teams Workflow Alerting
JamesHillyard 6c548c7
Document Teams Workflow Alert
JamesHillyard 93afd46
Rename 'teamsworkflow' to 'teams-workflows'
JamesHillyard b80463e
Fix README Table Format
JamesHillyard da1194f
Merge branch 'master' into TeamsWorkflowAlert
TwiN e218697
Fix Test to Expect Correct Emoji
JamesHillyard 0b560fc
Merge branch 'master' into TeamsWorkflowAlert
JamesHillyard 7cc5bd3
Merge branch 'master' into TeamsWorkflowAlert
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,182 @@ | ||
| package teamsworkflow | ||
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| import ( | ||
| "bytes" | ||
| "encoding/json" | ||
| "fmt" | ||
| "io" | ||
| "net/http" | ||
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| "github.com/TwiN/gatus/v5/alerting/alert" | ||
| "github.com/TwiN/gatus/v5/client" | ||
| "github.com/TwiN/gatus/v5/config/endpoint" | ||
| ) | ||
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| // AlertProvider is the configuration necessary for sending an alert using Teams | ||
| type AlertProvider struct { | ||
| WebhookURL string `yaml:"webhook-url"` | ||
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| // DefaultAlert is the default alert configuration to use for endpoints with an alert of the appropriate type | ||
| 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 | ||
| Overrides []Override `yaml:"overrides,omitempty"` | ||
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| // Title is the title of the message that will be sent | ||
| Title string `yaml:"title,omitempty"` | ||
| } | ||
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| // Override is a case under which the default integration is overridden | ||
| type Override struct { | ||
| Group string `yaml:"group"` | ||
| WebhookURL string `yaml:"webhook-url"` | ||
| } | ||
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| // IsValid returns whether the provider's configuration is valid | ||
| func (provider *AlertProvider) IsValid() bool { | ||
| registeredGroups := make(map[string]bool) | ||
| if provider.Overrides != nil { | ||
| for _, override := range provider.Overrides { | ||
| if isAlreadyRegistered := registeredGroups[override.Group]; isAlreadyRegistered || override.Group == "" || len(override.WebhookURL) == 0 { | ||
| return false | ||
| } | ||
| registeredGroups[override.Group] = true | ||
| } | ||
| } | ||
| return len(provider.WebhookURL) > 0 | ||
| } | ||
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| // Send an alert using the provider | ||
| func (provider *AlertProvider) Send(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) error { | ||
| buffer := bytes.NewBuffer(provider.buildRequestBody(ep, alert, result, resolved)) | ||
| request, err := http.NewRequest(http.MethodPost, provider.getWebhookURLForGroup(ep.Group), 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 | ||
| } | ||
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| // AdaptiveCardBody represents the structure of an Adaptive Card | ||
| type AdaptiveCardBody struct { | ||
| Type string `json:"type"` | ||
| Version string `json:"version"` | ||
| Body []CardBody `json:"body"` | ||
| } | ||
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| // CardBody represents the body of the Adaptive Card | ||
| type CardBody struct { | ||
| Type string `json:"type"` | ||
| Text string `json:"text,omitempty"` | ||
| Wrap bool `json:"wrap"` | ||
| Separator bool `json:"separator,omitempty"` | ||
| Size string `json:"size,omitempty"` | ||
| Weight string `json:"weight,omitempty"` | ||
| Items []CardBody `json:"items,omitempty"` | ||
| Facts []Fact `json:"facts,omitempty"` | ||
| FactSet *FactSetBody `json:"factSet,omitempty"` | ||
| } | ||
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| // FactSetBody represents the FactSet in the Adaptive Card | ||
| type FactSetBody struct { | ||
| Type string `json:"type"` | ||
| Facts []Fact `json:"facts"` | ||
| } | ||
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| // Fact represents an individual fact in the FactSet | ||
| type Fact struct { | ||
| Title string `json:"title"` | ||
| Value string `json:"value"` | ||
| } | ||
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| // buildRequestBody builds the request body for the provider | ||
| func (provider *AlertProvider) buildRequestBody(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) []byte { | ||
| var message string | ||
| if resolved { | ||
| message = fmt.Sprintf("An alert for **%s** has been resolved after passing successfully %d time(s) in a row.", ep.DisplayName(), alert.SuccessThreshold) | ||
| } else { | ||
| message = fmt.Sprintf("An alert for **%s** has been triggered due to having failed %d time(s) in a row.", ep.DisplayName(), alert.FailureThreshold) | ||
| } | ||
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| // Configure default title if it's not provided | ||
| title := "⛑ Gatus" | ||
| if provider.Title != "" { | ||
| title = provider.Title | ||
| } | ||
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| // Build the facts from the condition results | ||
| var facts []Fact | ||
| for _, conditionResult := range result.ConditionResults { | ||
| var key string | ||
| if conditionResult.Success { | ||
| key = "✅" | ||
| } else { | ||
| key = "❌" | ||
| } | ||
| facts = append(facts, Fact{ | ||
| Title: key, | ||
| Value: conditionResult.Condition, | ||
| }) | ||
| } | ||
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| cardContent := AdaptiveCardBody{ | ||
| Type: "AdaptiveCard", | ||
| Version: "1.4", // Version 1.5 and 1.6 doesn't seem to be supported by Teams as of 27/08/2024 | ||
| Body: []CardBody{ | ||
| { | ||
| Type: "TextBlock", | ||
| Text: title, | ||
| Size: "Medium", | ||
| Weight: "Bolder", | ||
| }, | ||
| { | ||
| Type: "TextBlock", | ||
| Text: message, | ||
| Wrap: true, | ||
| }, | ||
| { | ||
| Type: "FactSet", | ||
| Facts: facts, | ||
| }, | ||
| }, | ||
| } | ||
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| attachment := map[string]interface{}{ | ||
| "contentType": "application/vnd.microsoft.card.adaptive", | ||
| "content": cardContent, | ||
| } | ||
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| payload := map[string]interface{}{ | ||
| "type": "message", | ||
| "attachments": []interface{}{attachment}, | ||
| } | ||
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| bodyAsJSON, _ := json.Marshal(payload) | ||
| return bodyAsJSON | ||
| } | ||
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| // getWebhookURLForGroup returns the appropriate Webhook URL integration to for a given group | ||
| func (provider *AlertProvider) getWebhookURLForGroup(group string) string { | ||
| if provider.Overrides != nil { | ||
| for _, override := range provider.Overrides { | ||
| if group == override.Group { | ||
| return override.WebhookURL | ||
| } | ||
| } | ||
| } | ||
| return provider.WebhookURL | ||
| } | ||
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| // GetDefaultAlert returns the provider's default alert configuration | ||
| func (provider *AlertProvider) GetDefaultAlert() *alert.Alert { | ||
| return provider.DefaultAlert | ||
| } | ||
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