Start working on notifications when service is back to healthy (#9)

core/alerting.go

@@ -21,6 +21,10 @@ type TwilioAlertProvider struct {
 	To    string `yaml:"to"`
 }
 
+func (provider *TwilioAlertProvider) IsValid() bool {
+	return len(provider.Token) > 0 && len(provider.SID) > 0 && len(provider.From) > 0 && len(provider.To) > 0
+}
+
 type CustomAlertProvider struct {
 	Url     string            `yaml:"url"`
 	Method  string            `yaml:"method,omitempty"`
@@ -28,6 +32,10 @@ type CustomAlertProvider struct {
 	Headers map[string]string `yaml:"headers,omitempty"`
 }
 
+func (provider *CustomAlertProvider) IsValid() bool {
+	return len(provider.Url) > 0
+}
+
 func (provider *CustomAlertProvider) buildRequest(serviceName, alertDescription string) *http.Request {
 	body := provider.Body
 	url := provider.Url