Move payload parsing to the listener

pkg/events/events.go

@@ -19,11 +19,12 @@ package events
 import (
 	"context"
 	"encoding/json"
+	"time"
+
 	"github.com/ThreeDotsLabs/watermill"
 	"github.com/ThreeDotsLabs/watermill/message"
 	"github.com/ThreeDotsLabs/watermill/message/router/middleware"
 	"github.com/ThreeDotsLabs/watermill/pubsub/gochannel"
-	"time"
 )
 
 var (
@@ -64,12 +65,7 @@ func InitEvents() (err error) {
 	for topic, funcs := range listeners {
 		for _, handler := range funcs {
 			router.AddNoPublisherHandler(topic+watermill.NewShortUUID(), topic, pubsub, func(msg *message.Message) error {
-				var payload interface{}
-				err = json.Unmarshal(msg.Payload, payload)
-				if err != nil {
-					return err
-				}
-				return handler.Handle(payload)
+				return handler.Handle(msg.Payload)
 			})
 		}
 	}

pkg/events/listeners.go

@@ -16,8 +16,10 @@
 
 package events
 
+import "github.com/ThreeDotsLabs/watermill/message"
+
 type Listener interface {
-	Handle(payload interface{}) error
+	Handle(payload message.Payload) error
 }
 
 var listeners map[string][]Listener

pkg/models/listeners.go

@@ -16,7 +16,12 @@
 
 package models
 
-import "code.vikunja.io/api/pkg/events"
+import (
+	"code.vikunja.io/api/pkg/events"
+	"code.vikunja.io/api/pkg/log"
+	"encoding/json"
+	"github.com/ThreeDotsLabs/watermill/message"
+)
 
 func RegisterListeners() {
 	events.RegisterListener((&TaskCreatedEvent{}).TopicName(), &SendTaskCreatedNotification{})
@@ -25,6 +30,13 @@ func RegisterListeners() {
 type SendTaskCreatedNotification struct {
 }
 
-func (s *SendTaskCreatedNotification) Handle(payload interface{}) error {
-	panic("implement me")
+func (s *SendTaskCreatedNotification) Handle(payload message.Payload) (err error) {
+	task := &Task{}
+	err = json.Unmarshal(payload, task)
+	if err != nil {
+		return err
+	}
+
+	log.Debugf("task.created: %v", task)
+	return nil
 }