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This commit is contained in:
191
alerting/provider/telegram/telegram.go
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191
alerting/provider/telegram/telegram.go
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@ -0,0 +1,191 @@
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package telegram
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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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const defaultApiUrl = "https://api.telegram.org"
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var (
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ErrTokenNotSet = errors.New("token not set")
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ErrIDNotSet = errors.New("id 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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Token string `yaml:"token"`
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ID string `yaml:"id"`
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ApiUrl string `yaml:"api-url"`
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ClientConfig *client.Config `yaml:"client,omitempty"`
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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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cfg.ApiUrl = defaultApiUrl
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}
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if len(cfg.Token) == 0 {
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return ErrTokenNotSet
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}
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if len(cfg.ID) == 0 {
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return ErrIDNotSet
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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 override.ClientConfig != nil {
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cfg.ClientConfig = override.ClientConfig
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}
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if len(override.Token) > 0 {
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cfg.Token = override.Token
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}
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if len(override.ID) > 0 {
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cfg.ID = override.ID
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}
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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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}
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// AlertProvider is the configuration necessary for sending an alert using Telegram
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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 overrides 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 configuration that may be prioritized over the default configuration
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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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buffer := bytes.NewBuffer(provider.buildRequestBody(cfg, ep, alert, result, resolved))
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request, err := http.NewRequest(http.MethodPost, fmt.Sprintf("%s/bot%s/sendMessage", cfg.ApiUrl, cfg.Token), 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(cfg.ClientConfig).Do(request)
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if err != nil {
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return err
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}
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defer response.Body.Close()
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if response.StatusCode > 399 {
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body, _ := io.ReadAll(response.Body)
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return fmt.Errorf("call to provider alert returned status code %d: %s", response.StatusCode, string(body))
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}
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return err
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}
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type Body struct {
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ChatID string `json:"chat_id"`
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Text string `json:"text"`
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ParseMode string `json:"parse_mode"`
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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) []byte {
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var message string
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if resolved {
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message = fmt.Sprintf("An alert for *%s* has been resolved:\n—\n _healthcheck passing successfully %d time(s) in a row_\n— ", ep.DisplayName(), alert.SuccessThreshold)
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} else {
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message = fmt.Sprintf("An alert for *%s* has been triggered:\n—\n _healthcheck failed %d time(s) in a row_\n— ", ep.DisplayName(), alert.FailureThreshold)
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}
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var formattedConditionResults string
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if len(result.ConditionResults) > 0 {
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formattedConditionResults = "\n*Condition results*\n"
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for _, conditionResult := range result.ConditionResults {
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var prefix string
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if conditionResult.Success {
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prefix = "✅"
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} else {
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prefix = "❌"
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}
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formattedConditionResults += fmt.Sprintf("%s - `%s`\n", prefix, conditionResult.Condition)
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}
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}
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var text string
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if len(alert.GetDescription()) > 0 {
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text = fmt.Sprintf("⛑ *Gatus* \n%s \n*Description* \n_%s_ \n%s", message, alert.GetDescription(), formattedConditionResults)
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} else {
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text = fmt.Sprintf("⛑ *Gatus* \n%s%s", message, formattedConditionResults)
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}
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bodyAsJSON, _ := json.Marshal(Body{
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ChatID: cfg.ID,
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Text: text,
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ParseMode: "MARKDOWN",
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})
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return bodyAsJSON
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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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252
alerting/provider/telegram/telegram_test.go
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252
alerting/provider/telegram/telegram_test.go
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@ -0,0 +1,252 @@
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package telegram
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import (
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"encoding/json"
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"net/http"
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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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t.Run("invalid-provider", func(t *testing.T) {
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invalidProvider := AlertProvider{DefaultConfig: Config{Token: "", ID: ""}}
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if err := invalidProvider.Validate(); err == nil {
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t.Error("provider shouldn't have been valid")
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}
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})
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t.Run("valid-provider", func(t *testing.T) {
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validProvider := AlertProvider{DefaultConfig: Config{Token: "123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11", ID: "12345678"}}
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if err := validProvider.Validate(); err != nil {
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t.Error("provider should've been valid")
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}
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})
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t.Run("invalid-provider-override-nonexist-group", func(t *testing.T) {
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invalidProvider := AlertProvider{DefaultConfig: Config{Token: "123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11", ID: "12345678"}, Overrides: []*Override{{Config: Config{Token: "token", ID: "id"}}}}
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if err := invalidProvider.Validate(); err == nil {
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t.Error("provider shouldn't have been valid")
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}
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})
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t.Run("invalid-provider-override-duplicate-group", func(t *testing.T) {
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invalidProvider := AlertProvider{DefaultConfig: Config{Token: "123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11", ID: "12345678"}, Overrides: []*Override{{Group: "group1", Config: Config{Token: "token", ID: "id"}}, {Group: "group1", Config: Config{ID: "id2"}}}}
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if err := invalidProvider.Validate(); err == nil {
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t.Error("provider shouldn't have been valid")
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}
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})
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t.Run("valid-provider-with-overrides", func(t *testing.T) {
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validProvider := AlertProvider{DefaultConfig: Config{Token: "123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11", ID: "12345678"}, Overrides: []*Override{{Group: "group", Config: Config{Token: "token", ID: "id"}}}}
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if err := validProvider.Validate(); err != nil {
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t.Error("provider should've been valid")
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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{ID: "123", Token: "123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11"}},
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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.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: "triggered-error",
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Provider: AlertProvider{DefaultConfig: Config{ID: "123", Token: "123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11"}},
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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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Name: "resolved",
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Provider: AlertProvider{DefaultConfig: Config{ID: "123", Token: "123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11"}},
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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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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-error",
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Provider: AlertProvider{DefaultConfig: Config{ID: "123", Token: "123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11"}},
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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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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_buildRequestBody(t *testing.T) {
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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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NoConditions bool
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Resolved bool
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ExpectedBody string
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}{
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{
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Name: "triggered",
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Provider: AlertProvider{DefaultConfig: Config{ID: "123"}},
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Alert: alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
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Resolved: false,
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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\"}",
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},
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{
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Name: "resolved",
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Provider: AlertProvider{DefaultConfig: Config{ID: "123"}},
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Alert: alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
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Resolved: true,
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ExpectedBody: "{\"chat_id\":\"123\",\"text\":\"⛑ *Gatus* \\nAn alert for *endpoint-name* has been resolved:\\n—\\n _healthcheck passing successfully 5 time(s) in a row_\\n— \\n*Description* \\n_description-2_ \\n\\n*Condition results*\\n✅ - `[CONNECTED] == true`\\n✅ - `[STATUS] == 200`\\n\",\"parse_mode\":\"MARKDOWN\"}",
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},
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{
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Name: "resolved-with-no-conditions",
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NoConditions: true,
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Provider: AlertProvider{DefaultConfig: Config{ID: "123"}},
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Alert: alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
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Resolved: true,
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ExpectedBody: "{\"chat_id\":\"123\",\"text\":\"⛑ *Gatus* \\nAn alert for *endpoint-name* has been resolved:\\n—\\n _healthcheck passing successfully 5 time(s) in a row_\\n— \\n*Description* \\n_description-2_ \\n\",\"parse_mode\":\"MARKDOWN\"}",
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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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var conditionResults []*endpoint.ConditionResult
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if !scenario.NoConditions {
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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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body := scenario.Provider.buildRequestBody(
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&scenario.Provider.DefaultConfig,
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&endpoint.Endpoint{Name: "endpoint-name"},
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&scenario.Alert,
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&endpoint.Result{ConditionResults: conditionResults},
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scenario.Resolved,
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)
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if string(body) != scenario.ExpectedBody {
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t.Errorf("expected:\n%s\ngot:\n%s", scenario.ExpectedBody, body)
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}
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out := make(map[string]interface{})
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if err := json.Unmarshal(body, &out); err != nil {
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t.Error("expected body to be valid JSON, got error:", err.Error())
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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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func TestAlertProvider_GetConfig(t *testing.T) {
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t.Run("get-token-with-override", func(t *testing.T) {
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provider := AlertProvider{DefaultConfig: Config{Token: "123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11", ID: "12345678"}, Overrides: []*Override{{Group: "group", Config: Config{Token: "groupToken", ID: "overrideID"}}}}
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cfg, err := provider.GetConfig("group", &alert.Alert{})
|
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if err != nil {
|
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t.Error("expected no error, got", err)
|
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}
|
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if cfg.Token != "groupToken" {
|
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t.Error("token should have been 'groupToken'")
|
||||
}
|
||||
if cfg.ID != "overrideID" {
|
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t.Error("id should have been 'overrideID'")
|
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}
|
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})
|
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t.Run("get-default-token-with-overridden-id", func(t *testing.T) {
|
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provider := AlertProvider{DefaultConfig: Config{Token: "123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11", ID: "12345678"}, Overrides: []*Override{{Group: "group", Config: Config{ID: "overrideID"}}}}
|
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cfg, err := provider.GetConfig("group", &alert.Alert{})
|
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if err != nil {
|
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t.Error("expected no error, got", err)
|
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}
|
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if cfg.Token != provider.DefaultConfig.Token {
|
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t.Error("token should have been the default token")
|
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}
|
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if cfg.ID != "overrideID" {
|
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t.Error("id should have been 'overrideID'")
|
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}
|
||||
})
|
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t.Run("get-default-token-with-overridden-token", func(t *testing.T) {
|
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provider := AlertProvider{DefaultConfig: Config{Token: "123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11", ID: "12345678"}, Overrides: []*Override{{Group: "group", Config: Config{Token: "groupToken"}}}}
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cfg, err := provider.GetConfig("group", &alert.Alert{})
|
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if err != nil {
|
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t.Error("expected no error, got", err)
|
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}
|
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if cfg.Token != "groupToken" {
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t.Error("token should have been 'groupToken'")
|
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}
|
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if cfg.ID != provider.DefaultConfig.ID {
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t.Error("id should have been the default id")
|
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}
|
||||
})
|
||||
t.Run("get-default-token-with-overridden-token-and-alert-token-override", func(t *testing.T) {
|
||||
provider := AlertProvider{DefaultConfig: Config{Token: "123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11", ID: "12345678"}, Overrides: []*Override{{Group: "group", Config: Config{Token: "groupToken"}}}}
|
||||
alert := &alert.Alert{ProviderOverride: map[string]any{"token": "alertToken"}}
|
||||
cfg, err := provider.GetConfig("group", alert)
|
||||
if err != nil {
|
||||
t.Error("expected no error, got", err)
|
||||
}
|
||||
if cfg.Token != "alertToken" {
|
||||
t.Error("token should have been 'alertToken'")
|
||||
}
|
||||
if cfg.ID != provider.DefaultConfig.ID {
|
||||
t.Error("id should have been the default id")
|
||||
}
|
||||
// Test ValidateOverrides as well, since it really just calls GetConfig
|
||||
if err = provider.ValidateOverrides("group", alert); err != nil {
|
||||
t.Errorf("unexpected error: %s", err)
|
||||
}
|
||||
})
|
||||
}
|
||||
Reference in New Issue
Block a user