check if state field exists before processing a message

routes/infrastructure-component/amqpclient.go

@@ -261,13 +261,14 @@ func processMessage(message amqp.Delivery) error {
 		return fmt.Errorf("AMQP: Could not unmarshal message to JSON: %v err: %v", string(message.Body), err)
 	}
 
+	if payload.State != nil {
+		// if a message contains a "state" field, it is an update for an IC
 		ICUUID := payload.Properties.UUID
 		_, err = uuid.Parse(ICUUID)
 
 		if err != nil {
 			return fmt.Errorf("AMQP: UUID not valid: %v, message ignored: %v \n", ICUUID, string(message.Body))
 		}
-
 		var sToBeUpdated InfrastructureComponent
 		err = sToBeUpdated.ByUUID(ICUUID)
 
@@ -281,6 +282,6 @@ func processMessage(message amqp.Delivery) error {
 			// update record based on payload
 			err = sToBeUpdated.updateICviaAMQP(payload)
 		}
-
+	}
 	return err
 }