chore: add context and error handling

cmd/service/service.go

@@ -84,6 +84,7 @@ func start(closeEvents chan error, logger *log.Entry, connectToAmqpFunc func(url
 	}
 
 	eventStore, err := pg.New(
+		rootCtx,
 		db.DB,
 		pg.WithEventTypes(
 			&domain.SubGraphUpdated{},
@@ -92,29 +93,32 @@ func start(closeEvents chan error, logger *log.Entry, connectToAmqpFunc func(url
 	if err != nil {
 		return fmt.Errorf("failed to create eventstore: %v", err)
 	}
-	eventPublisher, err := goamqp.NewPublisher(
+	publisher, err := goamqp.NewPublisher(
 		goamqp.Route{
 			Type: domain.SubGraphUpdated{},
 			Key:  "SubGraph.Updated",
 		},
 	)
+	if err != nil {
+		return fmt.Errorf("failed to create publisher: %v", err)
+	}
+	eventPublisher, err := amqp.New(publisher)
 	if err != nil {
 		return fmt.Errorf("failed to create event publisher: %v", err)
 	}
-	amqp.New(eventPublisher)
 	conn, err := connectToAmqpFunc(cli.AmqpURL)
 	if err != nil {
 		return fmt.Errorf("failed to connect to AMQP: %v", err)
 	}
 
 	serviceCache := cache.New(logger)
-	roots, err := eventStore.GetAggregateRoots(reflect.TypeOf(domain.SubGraph{}))
+	roots, err := eventStore.GetAggregateRoots(rootCtx, reflect.TypeOf(domain.SubGraph{}))
 	if err != nil {
 		return err
 	}
 	for _, root := range roots {
 		subGraph := &domain.SubGraph{BaseAggregate: eventsourced.BaseAggregateFromString(root.String())}
-		if _, err := eventsourced.NewHandler(subGraph, eventStore); err != nil {
+		if _, err := eventsourced.NewHandler(rootCtx, subGraph, eventStore); err != nil {
 			return err
 		}
 		_, err := serviceCache.Update(subGraph, nil)
@@ -126,7 +130,7 @@ func start(closeEvents chan error, logger *log.Entry, connectToAmqpFunc func(url
 		goamqp.UseLogger(logger.Errorf),
 		goamqp.CloseListener(closeEvents),
 		goamqp.WithPrefetchLimit(20),
-		goamqp.EventStreamPublisher(eventPublisher),
+		goamqp.EventStreamPublisher(publisher),
 		goamqp.TransientEventStreamConsumer("SubGraph.Updated", serviceCache.Update, domain.SubGraphUpdated{}),
 	}
 	if err := conn.Start(rootCtx, setups...); err != nil {
@@ -187,7 +191,7 @@ func start(closeEvents chan error, logger *log.Entry, connectToAmqpFunc func(url
 
 		resolver := &graph.Resolver{
 			EventStore: eventStore,
-			Publisher:  amqp.New(eventPublisher),
+			Publisher:  eventPublisher,
 			Logger:     logger,
 			Cache:      serviceCache,
 		}