Resolve "Add an option to send gNMI Subscribe requests via SBI"

Description

#227 (closed)

controller/eventService/Service.go

@@ -10,6 +10,7 @@ import (
 	interfaces "code.fbi.h-da.de/danet/gosdn/controller/interfaces/event"
 
 	amqp "github.com/rabbitmq/amqp091-go"
+	"github.com/sirupsen/logrus"
 )
 
 // EventService is used to setup a connection to a broker and publish events to topics.
@@ -78,5 +79,7 @@ func (e *EventService) PublishEvent(topic string, event event.Event) error {
 
 // CloseConnection closes an exisiting connection.
 func (e *EventService) CloseConnection() {
-	e.connection.Close()
+	if err := e.connection.Close(); err != nil {
+		logrus.Error(err)
+	}
 }