feat(alerting): Add AWS SES Alerting Provider (#579)
* Add SES Provider * Formatting * Rename ses to aws-ses * Typo * Parse tag instead of type name * Use aws.slice to convert string array & rename awsses -> aws-ses * Rename type * Update README.md * Update alerting/config.go * Rename package aws-ses to awsses * Update README.md * PR comments --------- Co-authored-by: TwiN <twin@linux.com>
This commit is contained in:
Kevin Richter
GitHub
@ -5,6 +5,9 @@ package alert
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type Type string
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const (
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// TypeAWSSES is the Type for the awsses alerting provider
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TypeAWSSES Type = "aws-ses"
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// TypeCustom is the Type for the custom alerting provider
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TypeCustom Type = "custom"
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@ -7,6 +7,7 @@ import (
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"github.com/TwiN/gatus/v5/alerting/alert"
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"github.com/TwiN/gatus/v5/alerting/provider"
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"github.com/TwiN/gatus/v5/alerting/provider/awsses"
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"github.com/TwiN/gatus/v5/alerting/provider/custom"
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"github.com/TwiN/gatus/v5/alerting/provider/discord"
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"github.com/TwiN/gatus/v5/alerting/provider/email"
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@ -28,6 +29,9 @@ import (
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// Config is the configuration for alerting providers
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type Config struct {
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// AWSSimpleEmailService is the configuration for the aws-ses alerting provider
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AWSSimpleEmailService *awsses.AlertProvider `yaml:"aws-ses,omitempty"`
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// Custom is the configuration for the custom alerting provider
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Custom *custom.AlertProvider `yaml:"custom,omitempty"`
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@ -85,7 +89,8 @@ func (config *Config) GetAlertingProviderByAlertType(alertType alert.Type) provi
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entityType := reflect.TypeOf(config).Elem()
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for i := 0; i < entityType.NumField(); i++ {
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field := entityType.Field(i)
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if strings.ToLower(field.Name) == string(alertType) {
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tag := strings.Split(field.Tag.Get("yaml"), ",")[0]
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if tag == string(alertType) {
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fieldValue := reflect.ValueOf(config).Elem().Field(i)
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if fieldValue.IsNil() {
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return nil
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165
alerting/provider/awsses/awsses.go
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165
alerting/provider/awsses/awsses.go
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@ -0,0 +1,165 @@
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package awsses
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import (
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"fmt"
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"github.com/TwiN/gatus/v5/alerting/alert"
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"github.com/TwiN/gatus/v5/core"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/aws/awserr"
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"github.com/aws/aws-sdk-go/aws/credentials"
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"github.com/aws/aws-sdk-go/aws/session"
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"github.com/aws/aws-sdk-go/service/ses"
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"strings"
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)
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const (
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CharSet = "UTF-8"
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)
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// AlertProvider is the configuration necessary for sending an alert using AWS Simple Email Service
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type AlertProvider struct {
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AccessKeyID string `yaml:"access-key-id"`
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SecretAccessKey string `yaml:"secret-access-key"`
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Region string `yaml:"region"`
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From string `yaml:"from"`
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To string `yaml:"to"`
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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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To string `yaml:"to"`
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}
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// IsValid returns whether the provider's configuration is valid
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func (provider *AlertProvider) IsValid() bool {
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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.To) == 0 {
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return false
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}
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registeredGroups[override.Group] = true
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}
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}
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// if both AccessKeyID and SecretAccessKey are specified, we'll use these to authenticate,
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// otherwise if neither are specified, then we'll fall back on IAM authentication.
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return len(provider.From) > 0 && len(provider.To) > 0 &&
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((len(provider.AccessKeyID) == 0 && len(provider.SecretAccessKey) == 0) || (len(provider.AccessKeyID) > 0 && len(provider.SecretAccessKey) > 0))
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}
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// Send an alert using the provider
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func (provider *AlertProvider) Send(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) error {
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sess, err := provider.CreateSesSession()
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if err != nil {
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return err
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}
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svc := ses.New(sess)
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subject, body := provider.buildMessageSubjectAndBody(endpoint, alert, result, resolved)
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emails := strings.Split(provider.getToForGroup(endpoint.Group), ",")
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input := &ses.SendEmailInput{
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Destination: &ses.Destination{
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ToAddresses: aws.StringSlice(emails),
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},
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Message: &ses.Message{
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Body: &ses.Body{
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Text: &ses.Content{
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Charset: aws.String(CharSet),
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Data: aws.String(body),
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},
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},
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Subject: &ses.Content{
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Charset: aws.String(CharSet),
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Data: aws.String(subject),
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},
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},
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Source: aws.String(provider.From),
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}
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_, err = svc.SendEmail(input)
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if err != nil {
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if aerr, ok := err.(awserr.Error); ok {
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switch aerr.Code() {
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case ses.ErrCodeMessageRejected:
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fmt.Println(ses.ErrCodeMessageRejected, aerr.Error())
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case ses.ErrCodeMailFromDomainNotVerifiedException:
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fmt.Println(ses.ErrCodeMailFromDomainNotVerifiedException, aerr.Error())
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case ses.ErrCodeConfigurationSetDoesNotExistException:
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fmt.Println(ses.ErrCodeConfigurationSetDoesNotExistException, aerr.Error())
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default:
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fmt.Println(aerr.Error())
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}
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} else {
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// Print the error, cast err to awserr.Error to get the Code and
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// Message from an error.
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fmt.Println(err.Error())
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}
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return err
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}
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return nil
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}
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// buildMessageSubjectAndBody builds the message subject and body
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func (provider *AlertProvider) buildMessageSubjectAndBody(endpoint *core.Endpoint, alert *alert.Alert, result *core.Result, resolved bool) (string, string) {
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var subject, message, results string
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if resolved {
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subject = fmt.Sprintf("[%s] Alert resolved", endpoint.DisplayName())
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message = fmt.Sprintf("An alert for %s has been resolved after passing successfully %d time(s) in a row", endpoint.DisplayName(), alert.SuccessThreshold)
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} else {
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subject = fmt.Sprintf("[%s] Alert triggered", endpoint.DisplayName())
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message = fmt.Sprintf("An alert for %s has been triggered due to having failed %d time(s) in a row", endpoint.DisplayName(), alert.FailureThreshold)
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}
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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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results += fmt.Sprintf("%s %s\n", 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 = "\n\nAlert description: " + alertDescription
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}
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return subject, message + description + "\n\nCondition results:\n" + results
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}
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// getToForGroup returns the appropriate email integration to for a given group
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func (provider *AlertProvider) getToForGroup(group string) string {
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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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return override.To
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}
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}
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}
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return provider.To
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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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func (provider AlertProvider) CreateSesSession() (*session.Session, error) {
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config := &aws.Config{
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Region: aws.String(provider.Region),
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}
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if len(provider.AccessKeyID) > 0 && len(provider.SecretAccessKey) > 0 {
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config.Credentials = credentials.NewStaticCredentials(provider.AccessKeyID, provider.SecretAccessKey, "")
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}
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return session.NewSession(config)
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}
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188
alerting/provider/awsses/awsses_test.go
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188
alerting/provider/awsses/awsses_test.go
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@ -0,0 +1,188 @@
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package awsses
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import (
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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/core"
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)
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func TestAlertDefaultProvider_IsValid(t *testing.T) {
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invalidProvider := AlertProvider{}
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if invalidProvider.IsValid() {
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t.Error("provider shouldn't have been valid")
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}
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invalidProviderWithOneKey := AlertProvider{From: "from@example.com", To: "to@example.com", AccessKeyID: "1"}
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if invalidProviderWithOneKey.IsValid() {
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t.Error("provider shouldn't have been valid")
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}
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validProvider := AlertProvider{From: "from@example.com", To: "to@example.com"}
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if !validProvider.IsValid() {
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t.Error("provider should've been valid")
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}
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validProviderWithKeys := AlertProvider{From: "from@example.com", To: "to@example.com", AccessKeyID: "1", SecretAccessKey: "1"}
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if !validProviderWithKeys.IsValid() {
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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_IsValidWithOverride(t *testing.T) {
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providerWithInvalidOverrideGroup := AlertProvider{
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Overrides: []Override{
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{
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To: "to@example.com",
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Group: "",
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},
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},
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}
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if providerWithInvalidOverrideGroup.IsValid() {
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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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To: "",
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Group: "group",
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},
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},
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}
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if providerWithInvalidOverrideTo.IsValid() {
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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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From: "from@example.com",
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To: "to@example.com",
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Overrides: []Override{
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{
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To: "to@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 !providerWithValidOverride.IsValid() {
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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_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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Resolved bool
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ExpectedSubject string
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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{},
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Alert: alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
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Resolved: false,
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ExpectedSubject: "[endpoint-name] Alert triggered",
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ExpectedBody: "An alert for endpoint-name has been triggered due to having failed 3 time(s) in a row\n\nAlert description: description-1\n\nCondition results:\n❌ [CONNECTED] == true\n❌ [STATUS] == 200\n",
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},
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{
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Name: "resolved",
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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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ExpectedSubject: "[endpoint-name] Alert resolved",
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ExpectedBody: "An alert for endpoint-name has been resolved after passing successfully 5 time(s) in a row\n\nAlert description: description-2\n\nCondition results:\n✅ [CONNECTED] == true\n✅ [STATUS] == 200\n",
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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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subject, body := scenario.Provider.buildMessageSubjectAndBody(
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&core.Endpoint{Name: "endpoint-name"},
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&scenario.Alert,
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&core.Result{
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ConditionResults: []*core.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 subject != scenario.ExpectedSubject {
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t.Errorf("expected subject to be %s, got %s", scenario.ExpectedSubject, subject)
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}
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if body != scenario.ExpectedBody {
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t.Errorf("expected body to be %s, got %s", scenario.ExpectedBody, body)
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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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func TestAlertProvider_getToForGroup(t *testing.T) {
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tests := []struct {
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Name string
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Provider AlertProvider
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InputGroup string
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ExpectedOutput string
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}{
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{
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Name: "provider-no-override-specify-no-group-should-default",
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Provider: AlertProvider{
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To: "to@example.com",
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Overrides: nil,
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},
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InputGroup: "",
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ExpectedOutput: "to@example.com",
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},
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{
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Name: "provider-no-override-specify-group-should-default",
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Provider: AlertProvider{
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To: "to@example.com",
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Overrides: nil,
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},
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InputGroup: "group",
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ExpectedOutput: "to@example.com",
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},
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{
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Name: "provider-with-override-specify-no-group-should-default",
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Provider: AlertProvider{
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To: "to@example.com",
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Overrides: []Override{
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{
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Group: "group",
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To: "to01@example.com",
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},
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},
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},
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InputGroup: "",
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ExpectedOutput: "to@example.com",
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},
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{
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Name: "provider-with-override-specify-group-should-override",
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Provider: AlertProvider{
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To: "to@example.com",
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Overrides: []Override{
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{
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Group: "group",
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To: "to01@example.com",
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},
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},
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},
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InputGroup: "group",
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ExpectedOutput: "to01@example.com",
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},
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}
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for _, tt := range tests {
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t.Run(tt.Name, func(t *testing.T) {
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if got := tt.Provider.getToForGroup(tt.InputGroup); got != tt.ExpectedOutput {
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t.Errorf("AlertProvider.getToForGroup() = %v, want %v", got, tt.ExpectedOutput)
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}
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})
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}
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}
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@ -2,6 +2,7 @@ package provider
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import (
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"github.com/TwiN/gatus/v5/alerting/alert"
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"github.com/TwiN/gatus/v5/alerting/provider/awsses"
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"github.com/TwiN/gatus/v5/alerting/provider/custom"
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"github.com/TwiN/gatus/v5/alerting/provider/discord"
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"github.com/TwiN/gatus/v5/alerting/provider/email"
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@ -58,6 +59,7 @@ func ParseWithDefaultAlert(providerDefaultAlert, endpointAlert *alert.Alert) {
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var (
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// Validate interface implementation on compile
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_ AlertProvider = (*awsses.AlertProvider)(nil)
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_ AlertProvider = (*custom.AlertProvider)(nil)
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_ AlertProvider = (*discord.AlertProvider)(nil)
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_ AlertProvider = (*email.AlertProvider)(nil)
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Reference in New Issue
Block a user