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This commit is contained in:
248
alerting/provider/googlechat/googlechat.go
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248
alerting/provider/googlechat/googlechat.go
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@ -0,0 +1,248 @@
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package googlechat
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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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ErrWebhookURLNotSet = errors.New("webhook-url 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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WebhookURL string `yaml:"webhook-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.WebhookURL) == 0 {
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return ErrWebhookURLNotSet
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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.WebhookURL) > 0 {
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cfg.WebhookURL = override.WebhookURL
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}
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}
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// AlertProvider is the configuration necessary for sending an alert using Google chat
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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 == "" || len(override.WebhookURL) == 0 {
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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(ep, alert, result, resolved))
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request, err := http.NewRequest(http.MethodPost, cfg.WebhookURL, 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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Cards []Cards `json:"cards"`
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}
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type Cards struct {
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Sections []Sections `json:"sections"`
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}
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type Sections struct {
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Widgets []Widgets `json:"widgets"`
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}
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type Widgets struct {
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KeyValue *KeyValue `json:"keyValue,omitempty"`
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Buttons []Buttons `json:"buttons,omitempty"`
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}
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type KeyValue struct {
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TopLabel string `json:"topLabel,omitempty"`
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Content string `json:"content,omitempty"`
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ContentMultiline string `json:"contentMultiline,omitempty"`
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BottomLabel string `json:"bottomLabel,omitempty"`
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Icon string `json:"icon,omitempty"`
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}
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type Buttons struct {
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TextButton TextButton `json:"textButton"`
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}
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type TextButton struct {
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Text string `json:"text"`
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OnClick OnClick `json:"onClick"`
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}
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type OnClick struct {
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OpenLink OpenLink `json:"openLink"`
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}
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type OpenLink struct {
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URL string `json:"url"`
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}
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// buildRequestBody builds the request body for the provider
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func (provider *AlertProvider) buildRequestBody(ep *endpoint.Endpoint, alert *alert.Alert, result *endpoint.Result, resolved bool) []byte {
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var message, color string
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if resolved {
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color = "#36A64F"
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message = fmt.Sprintf("<font color='%s'>An alert has been resolved after passing successfully %d time(s) in a row</font>", color, alert.SuccessThreshold)
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} else {
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color = "#DD0000"
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message = fmt.Sprintf("<font color='%s'>An alert has been triggered due to having failed %d time(s) in a row</font>", color, alert.FailureThreshold)
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}
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var formattedConditionResults string
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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<br>", prefix, conditionResult.Condition)
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}
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var description string
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if alertDescription := alert.GetDescription(); len(alertDescription) > 0 {
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description = ":: " + alertDescription
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}
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payload := Body{
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Cards: []Cards{
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{
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Sections: []Sections{
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{
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Widgets: []Widgets{
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{
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KeyValue: &KeyValue{
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TopLabel: ep.DisplayName(),
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Content: message,
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ContentMultiline: "true",
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BottomLabel: description,
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Icon: "BOOKMARK",
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},
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},
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},
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},
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},
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},
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},
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}
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if len(formattedConditionResults) > 0 {
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payload.Cards[0].Sections[0].Widgets = append(payload.Cards[0].Sections[0].Widgets, Widgets{
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KeyValue: &KeyValue{
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TopLabel: "Condition results",
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Content: formattedConditionResults,
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ContentMultiline: "true",
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Icon: "DESCRIPTION",
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},
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})
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}
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if ep.Type() == endpoint.TypeHTTP {
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// We only include a button targeting the URL if the endpoint is an HTTP endpoint
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// If the URL isn't prefixed with https://, Google Chat will just display a blank message aynways.
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// See https://github.com/TwiN/gatus/issues/362
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payload.Cards[0].Sections[0].Widgets = append(payload.Cards[0].Sections[0].Widgets, Widgets{
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Buttons: []Buttons{
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{
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TextButton: TextButton{
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Text: "URL",
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OnClick: OnClick{OpenLink: OpenLink{URL: ep.URL}},
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},
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},
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},
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})
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}
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bodyAsJSON, _ := json.Marshal(payload)
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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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305
alerting/provider/googlechat/googlechat_test.go
Normal file
305
alerting/provider/googlechat/googlechat_test.go
Normal file
@ -0,0 +1,305 @@
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package googlechat
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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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invalidProvider := AlertProvider{DefaultConfig: Config{WebhookURL: ""}}
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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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validProvider := AlertProvider{DefaultConfig: Config{WebhookURL: "http://example.com"}}
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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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func TestAlertProvider_ValidateWithOverride(t *testing.T) {
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providerWithInvalidOverrideGroup := AlertProvider{
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Overrides: []Override{
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{
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Config: Config{WebhookURL: "http://example.com"},
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Group: "",
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},
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},
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}
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if err := providerWithInvalidOverrideGroup.Validate(); err == nil {
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t.Error("provider Group shouldn't have been valid")
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}
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providerWithInvalidOverrideTo := AlertProvider{
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Overrides: []Override{
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{
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Config: Config{WebhookURL: ""},
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Group: "group",
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},
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},
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}
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if err := providerWithInvalidOverrideTo.Validate(); err == nil {
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t.Error("provider integration key shouldn't have been valid")
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}
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providerWithValidOverride := AlertProvider{
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DefaultConfig: Config{WebhookURL: "http://example.com"},
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Overrides: []Override{
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{
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Config: Config{WebhookURL: "http://example.com"},
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Group: "group",
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},
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},
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}
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if err := providerWithValidOverride.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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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{WebhookURL: "http://example.com"}},
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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{WebhookURL: "http://example.com"}},
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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{WebhookURL: "http://example.com"}},
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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{WebhookURL: "http://example.com"}},
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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", Group: "endpoint-group"},
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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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Endpoint endpoint.Endpoint
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Provider AlertProvider
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Alert alert.Alert
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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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Endpoint: endpoint.Endpoint{Name: "endpoint-name", URL: "https://example.org"},
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Provider: AlertProvider{},
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Alert: alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
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Resolved: false,
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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"}}}}]}]}]}]}`,
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},
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{
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Name: "resolved",
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Endpoint: endpoint.Endpoint{Name: "endpoint-name", URL: "https://example.org"},
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Provider: AlertProvider{},
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Alert: alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
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Resolved: true,
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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"}}}}]}]}]}]}`,
|
||||
},
|
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{
|
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Name: "icmp-should-not-include-url", // See https://github.com/TwiN/gatus/issues/362
|
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Endpoint: endpoint.Endpoint{Name: "endpoint-name", URL: "icmp://example.org"},
|
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Provider: AlertProvider{},
|
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Alert: alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
|
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Resolved: false,
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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: endpoint.Endpoint{Name: "endpoint-name", URL: "tcp://example.org"},
|
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Provider: AlertProvider{},
|
||||
Alert: alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
|
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Resolved: false,
|
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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(
|
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&scenario.Endpoint,
|
||||
&scenario.Alert,
|
||||
&endpoint.Result{
|
||||
ConditionResults: []*endpoint.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())
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestAlertProvider_GetDefaultAlert(t *testing.T) {
|
||||
if (&AlertProvider{DefaultAlert: &alert.Alert{}}).GetDefaultAlert() == nil {
|
||||
t.Error("expected default alert to be not nil")
|
||||
}
|
||||
if (&AlertProvider{DefaultAlert: nil}).GetDefaultAlert() != nil {
|
||||
t.Error("expected default alert to be nil")
|
||||
}
|
||||
}
|
||||
|
||||
func TestAlertProvider_GetConfig(t *testing.T) {
|
||||
scenarios := []struct {
|
||||
Name string
|
||||
Provider AlertProvider
|
||||
InputGroup string
|
||||
InputAlert alert.Alert
|
||||
ExpectedOutput Config
|
||||
}{
|
||||
{
|
||||
Name: "provider-no-override-specify-no-group-should-default",
|
||||
Provider: AlertProvider{
|
||||
DefaultConfig: Config{WebhookURL: "http://example.com"},
|
||||
Overrides: nil,
|
||||
},
|
||||
InputGroup: "",
|
||||
InputAlert: alert.Alert{},
|
||||
ExpectedOutput: Config{WebhookURL: "http://example.com"},
|
||||
},
|
||||
{
|
||||
Name: "provider-no-override-specify-group-should-default",
|
||||
Provider: AlertProvider{
|
||||
DefaultConfig: Config{WebhookURL: "http://example.com"},
|
||||
Overrides: nil,
|
||||
},
|
||||
InputGroup: "group",
|
||||
InputAlert: alert.Alert{},
|
||||
ExpectedOutput: Config{WebhookURL: "http://example.com"},
|
||||
},
|
||||
{
|
||||
Name: "provider-with-override-specify-no-group-should-default",
|
||||
Provider: AlertProvider{
|
||||
DefaultConfig: Config{WebhookURL: "http://example.com"},
|
||||
Overrides: []Override{
|
||||
{
|
||||
Group: "group",
|
||||
Config: Config{WebhookURL: "http://example01.com"},
|
||||
},
|
||||
},
|
||||
},
|
||||
InputGroup: "",
|
||||
InputAlert: alert.Alert{},
|
||||
ExpectedOutput: Config{WebhookURL: "http://example.com"},
|
||||
},
|
||||
{
|
||||
Name: "provider-with-override-specify-group-should-override",
|
||||
Provider: AlertProvider{
|
||||
DefaultConfig: Config{WebhookURL: "http://example.com"},
|
||||
Overrides: []Override{
|
||||
{
|
||||
Group: "group",
|
||||
Config: Config{WebhookURL: "http://group-example.com"},
|
||||
},
|
||||
},
|
||||
},
|
||||
InputGroup: "group",
|
||||
InputAlert: alert.Alert{},
|
||||
ExpectedOutput: Config{WebhookURL: "http://group-example.com"},
|
||||
},
|
||||
{
|
||||
Name: "provider-with-group-override-and-alert-override--alert-override-should-take-precedence",
|
||||
Provider: AlertProvider{
|
||||
DefaultConfig: Config{WebhookURL: "http://example.com"},
|
||||
Overrides: []Override{
|
||||
{
|
||||
Group: "group",
|
||||
Config: Config{WebhookURL: "http://group-example.com"},
|
||||
},
|
||||
},
|
||||
},
|
||||
InputGroup: "group",
|
||||
InputAlert: alert.Alert{ProviderOverride: map[string]any{"webhook-url": "http://alert-example.com"}},
|
||||
ExpectedOutput: Config{WebhookURL: "http://alert-example.com"},
|
||||
},
|
||||
}
|
||||
for _, scenario := range scenarios {
|
||||
t.Run(scenario.Name, func(t *testing.T) {
|
||||
got, err := scenario.Provider.GetConfig(scenario.InputGroup, &scenario.InputAlert)
|
||||
if err != nil {
|
||||
t.Fatalf("unexpected error: %s", err)
|
||||
}
|
||||
if got.WebhookURL != scenario.ExpectedOutput.WebhookURL {
|
||||
t.Errorf("expected webhook URL to be %s, got %s", scenario.ExpectedOutput.WebhookURL, got.WebhookURL)
|
||||
}
|
||||
// Test ValidateOverrides as well, since it really just calls GetConfig
|
||||
if err = scenario.Provider.ValidateOverrides(scenario.InputGroup, &scenario.InputAlert); err != nil {
|
||||
t.Errorf("unexpected error: %s", err)
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user