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141
alerting/provider/twilio/twilio.go
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141
alerting/provider/twilio/twilio.go
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@ -0,0 +1,141 @@
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package twilio
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import (
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"bytes"
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"encoding/base64"
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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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"net/url"
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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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ErrSIDNotSet = errors.New("sid not set")
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ErrTokenNotSet = errors.New("token not set")
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ErrFromNotSet = errors.New("from not set")
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ErrToNotSet = errors.New("to not set")
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)
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type Config struct {
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SID string `yaml:"sid"`
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Token string `yaml:"token"`
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From string `yaml:"from"`
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To string `yaml:"to"`
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}
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func (cfg *Config) Validate() error {
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if len(cfg.SID) == 0 {
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return ErrSIDNotSet
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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.From) == 0 {
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return ErrFromNotSet
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}
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if len(cfg.To) == 0 {
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return ErrToNotSet
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}
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return nil
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}
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func (cfg *Config) Merge(override *Config) {
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if len(override.SID) > 0 {
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cfg.SID = override.SID
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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.From) > 0 {
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cfg.From = override.From
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}
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if len(override.To) > 0 {
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cfg.To = override.To
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}
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}
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// AlertProvider is the configuration necessary for sending an alert using Twilio
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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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}
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// Validate the provider's configuration
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func (provider *AlertProvider) Validate() error {
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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([]byte(provider.buildRequestBody(cfg, ep, alert, result, resolved)))
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request, err := http.NewRequest(http.MethodPost, fmt.Sprintf("https://api.twilio.com/2010-04-01/Accounts/%s/Messages.json", cfg.SID), 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/x-www-form-urlencoded")
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request.Header.Set("Authorization", fmt.Sprintf("Basic %s", base64.StdEncoding.EncodeToString([]byte(cfg.SID+":"+cfg.Token))))
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response, err := client.GetHTTPClient(nil).Do(request)
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if err != nil {
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return err
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}
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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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// 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) string {
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var message string
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if resolved {
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message = fmt.Sprintf("RESOLVED: %s - %s", ep.DisplayName(), alert.GetDescription())
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} else {
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message = fmt.Sprintf("TRIGGERED: %s - %s", ep.DisplayName(), alert.GetDescription())
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}
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return url.Values{
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"To": {cfg.To},
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"From": {cfg.From},
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"Body": {message},
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}.Encode()
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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 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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211
alerting/provider/twilio/twilio_test.go
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211
alerting/provider/twilio/twilio_test.go
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@ -0,0 +1,211 @@
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package twilio
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import (
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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 TestTwilioAlertProvider_IsValid(t *testing.T) {
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invalidProvider := AlertProvider{}
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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{
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DefaultConfig: Config{
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SID: "1",
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Token: "1",
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From: "1",
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To: "1",
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},
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}
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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_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{SID: "1", Token: "2", From: "3", To: "4"}},
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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{SID: "1", Token: "2", From: "3", To: "4"}},
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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{SID: "1", Token: "2", From: "3", To: "4"}},
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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{SID: "1", Token: "2", From: "3", To: "4"}},
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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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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{SID: "1", Token: "2", From: "3", To: "4"}},
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Alert: alert.Alert{Description: &firstDescription, SuccessThreshold: 5, FailureThreshold: 3},
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Resolved: false,
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ExpectedBody: "Body=TRIGGERED%3A+endpoint-name+-+description-1&From=3&To=4",
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},
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{
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Name: "resolved",
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Provider: AlertProvider{DefaultConfig: Config{SID: "1", Token: "2", From: "3", To: "4"}},
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Alert: alert.Alert{Description: &secondDescription, SuccessThreshold: 5, FailureThreshold: 3},
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Resolved: true,
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ExpectedBody: "Body=RESOLVED%3A+endpoint-name+-+description-2&From=3&To=4",
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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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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{
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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 body != scenario.ExpectedBody {
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t.Errorf("expected %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_GetConfig(t *testing.T) {
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scenarios := []struct {
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Name string
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Provider AlertProvider
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InputAlert alert.Alert
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ExpectedOutput Config
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}{
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{
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Name: "provider-no-override-should-default",
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Provider: AlertProvider{
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DefaultConfig: Config{SID: "1", Token: "2", From: "3", To: "4"},
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},
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InputAlert: alert.Alert{},
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ExpectedOutput: Config{SID: "1", Token: "2", From: "3", To: "4"},
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},
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{
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Name: "provider-with-alert-override",
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Provider: AlertProvider{
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DefaultConfig: Config{SID: "1", Token: "2", From: "3", To: "4"},
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},
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InputAlert: alert.Alert{ProviderOverride: map[string]any{"sid": "5", "token": "6", "from": "7", "to": "8"}},
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ExpectedOutput: Config{SID: "5", Token: "6", From: "7", To: "8"},
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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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got, err := scenario.Provider.GetConfig("", &scenario.InputAlert)
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if err != nil {
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t.Error("expected no error, got:", err.Error())
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}
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if got.SID != scenario.ExpectedOutput.SID {
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t.Errorf("expected SID to be %s, got %s", scenario.ExpectedOutput.SID, got.SID)
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}
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if got.Token != scenario.ExpectedOutput.Token {
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t.Errorf("expected token to be %s, got %s", scenario.ExpectedOutput.Token, got.Token)
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}
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if got.From != scenario.ExpectedOutput.From {
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t.Errorf("expected from to be %s, got %s", scenario.ExpectedOutput.From, got.From)
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}
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if got.To != scenario.ExpectedOutput.To {
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t.Errorf("expected to to be %s, got %s", scenario.ExpectedOutput.To, got.To)
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}
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// Test ValidateOverrides as well, since it really just calls GetConfig
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if err = scenario.Provider.ValidateOverrides("", &scenario.InputAlert); err != nil {
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t.Errorf("unexpected error: %s", err)
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}
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})
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}
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}
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