FIX: docker registry notifications bulk events can include different type events

cmd/keel/main.go

@@ -225,7 +225,15 @@ func setupProviders(k8sImplementer kubernetes.Implementer, sender notification.S
 			"error": err,
 		}).Fatal("main.setupProviders: failed to create kubernetes provider")
 	}
-	go k8sProvider.Start()
+	go func() {
+		err := k8sProvider.Start()
+		if err != nil {
+			log.WithFields(log.Fields{
+				"error": err,
+			}).Fatal("kubernetes provider stopped with an error")
+		}
+	}()
+
 	enabledProviders = append(enabledProviders, k8sProvider)
 
 	if os.Getenv(EnvHelmProvider) == "1" {
@@ -233,7 +241,15 @@ func setupProviders(k8sImplementer kubernetes.Implementer, sender notification.S
 		helmImplementer := helm.NewHelmImplementer(tillerAddr)
 		helmProvider := helm.NewProvider(helmImplementer, sender, approvalsManager)
 
-		go helmProvider.Start()
+		go func() {
+			err := helmProvider.Start()
+			if err != nil {
+				log.WithFields(log.Fields{
+					"error": err,
+				}).Fatal("helm provider stopped with an error")
+			}
+		}()
+
 		enabledProviders = append(enabledProviders, helmProvider)
 	}
 
@@ -253,7 +269,15 @@ func setupTriggers(ctx context.Context, providers provider.Providers, approvalsM
 		ApprovalManager: approvalsManager,
 	})
 
-	go whs.Start()
+	go func() {
+		err := whs.Start()
+		if err != nil {
+			log.WithFields(log.Fields{
+				"error": err,
+				"port":  types.KeelDefaultPort,
+			}).Fatal("trigger server stopped")
+		}
+	}()
 
 	// checking whether pubsub (GCR) trigger is enabled
 	if os.Getenv(EnvTriggerPubSub) != "" {

trigger/http/registry_notifications.go

@@ -2,7 +2,6 @@ package http
 
 import (
 	"encoding/json"
-	"fmt"
 	"net/http"
 	"time"
 
@@ -99,18 +98,18 @@ func (s *TriggerServer) registryNotificationHandler(resp http.ResponseWriter, re
 		return
 	}
 
+	log.WithFields(log.Fields{
+		"event": rn,
+	}).Debug("registryNotificationHandler: received event, looking for a push tag")
+
 	for _, e := range rn.Events {
 
 		if e.Action != "push" {
-			// ignoring non-push events
-			resp.WriteHeader(200)
-			return
+			continue
 		}
 
 		if e.Target.Tag == "" {
-			resp.WriteHeader(http.StatusBadRequest)
-			fmt.Fprintf(resp, "tag cannot be empty")
-			return
+			continue
 		}
 
 		dockerURL := e.Request.Host + "/" + e.Target.Repository
@@ -122,10 +121,16 @@ func (s *TriggerServer) registryNotificationHandler(resp http.ResponseWriter, re
 		event.Repository.Tag = e.Target.Tag
 		event.Repository.Digest = e.Target.Digest
 
+		log.WithFields(log.Fields{
+			"action":     e.Action,
+			"tag":        e.Target.Tag,
+			"repository": dockerURL,
+			"digest":     e.Target.Digest,
+		}).Debug("registryNotificationHandler: got registry notification, processing")
+
 		s.trigger(event)
 
 		newRegistryNotificationWebhooksCounter.With(prometheus.Labels{"image": event.Repository.Name}).Inc()
-
 	}
 
 }