feat(alerting): skeleton commit for webhook

pkg/services/notifications/notifications.go

@@ -23,11 +23,14 @@ var tmplWelcomeOnSignUp = "welcome_on_signup.html"
 
 func Init() error {
 	initMailQueue()
+	initWebhookQueue()
 
 	bus.AddHandler("email", sendResetPasswordEmail)
 	bus.AddHandler("email", validateResetPasswordCode)
 	bus.AddHandler("email", sendEmailCommandHandler)
 
+	bus.AddHandler("webhook", sendWebhook)
+
 	bus.AddEventListener(signUpStartedHandler)
 	bus.AddEventListener(signUpCompletedHandler)
 
@@ -53,6 +56,18 @@ func Init() error {
 	return nil
 }
 
+func sendWebhook(cmd *m.SendWebhook) error {
+	addToWebhookQueue(&Webhook{
+		Url:          cmd.Url,
+		AuthUser:     cmd.AuthUser,
+		AuthPassword: cmd.AuthPassword,
+		Method:       cmd.Method,
+		Body:         cmd.Body,
+	})
+
+	return nil
+}
+
 func subjectTemplateFunc(obj map[string]interface{}, value string) string {
 	obj["value"] = value
 	return ""

pkg/services/notifications/webhook.go

@@ -0,0 +1,62 @@
+package notifications
+
+import (
+	"net/http"
+	"time"
+
+	"github.com/grafana/grafana/pkg/log"
+)
+
+type Webhook struct {
+	Url          string
+	AuthUser     string
+	AuthPassword string
+	Body         string
+	Method       string
+}
+
+var webhookQueue chan *Webhook
+var webhookLog log.Logger
+
+func initWebhookQueue() {
+	webhookLog = log.New("notifications.webhook")
+	webhookQueue = make(chan *Webhook, 10)
+	go processWebhookQueue()
+}
+
+func processWebhookQueue() {
+	for {
+		select {
+		case webhook := <-webhookQueue:
+			err := sendWebRequest(webhook)
+
+			if err != nil {
+				webhookLog.Error("Failed to send webrequest ")
+			}
+		}
+	}
+}
+
+func sendWebRequest(webhook *Webhook) error {
+	webhookLog.Error("Sending stuff! ", "url", webhook.Url)
+
+	client := http.Client{Timeout: time.Duration(3 * time.Second)}
+
+	request, err := http.NewRequest(webhook.Method, webhook.Url, nil /*io.reader*/)
+
+	if err != nil {
+		return err
+	}
+
+	resp, err := client.Do(request)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	return nil
+}
+
+var addToWebhookQueue = func(msg *Webhook) {
+	webhookQueue <- msg
+}