1 files changed, 20 insertions(+), 22 deletions(-)

M parser/alertmanager.go

@@ 6,8 6,26 @@ import (
 	"fmt"
 	"io/ioutil"
 	"net/http"
+	"strings"
 )
 
+type Alert struct {
+	Status string `json:"status"`
+	Labels struct {
+		Alertname string `json:"alertname"`
+		Instance  string `json:"instance"`
+	} `json:"labels"`
+	Annotations struct {
+		Summary string `json:"summary"`
+	} `json:"annotations"`
+}
+
+func (a *Alert) toMessage() string {
+	status := strings.ToUpper(a.Status)
+	return fmt.Sprintf("[%s] *%s* on %s: %s", status, a.Labels.Alertname,
+		a.Labels.Instance, a.Annotations.Summary)
+}
+
 func AlertmanagerParserFunc(r *http.Request) (string, error) {
 	// get alert data from request
 	body, err := ioutil.ReadAll(r.Body)


@@ 16,11 34,7 @@ func AlertmanagerParserFunc(r *http.Request) (string, error) {
 	}
 
 	payload := &struct {
-		Alerts []struct {
-			Status      string            `json:"status"`
-			Labels      map[string]string `json:"labels"`
-			Annotations map[string]string `json:"annotations"`
-		} `json:"alerts"`
+		Alerts []Alert `json:"alerts"`
 	}{}
 
 	// parse body into the alert struct


@@ 32,23 46,7 @@ func AlertmanagerParserFunc(r *http.Request) (string, error) {
 	// construct alert message
 	var message string
 	for _, alert := range payload.Alerts {
-		if alert.Status == "resolved" {
-			message = "Resolved" + "\n"
-		} else {
-			message = "Firing" + "\n"
-		}
-
-		message += "Labels" + "\n"
-		for key, label := range alert.Labels {
-			message += fmt.Sprintf("%s = %s\n", key, label)
-		}
-
-		message += "Annotations" + "\n"
-		for key, annotation := range alert.Annotations {
-			message += fmt.Sprintf("%s = %s\n", key, annotation)
-		}
-
-		message += "\n"
+		message += alert.toMessage() + "\n"
 	}
 
 	return message, nil