2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2016-2018 Ericsson. All rights reserved.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.apex.core.infrastructure.messaging.impl.ws;
23 import org.onap.policy.apex.core.infrastructure.messaging.MessageListener;
24 import org.onap.policy.apex.core.infrastructure.messaging.impl.ws.messageblock.RawMessageBlock;
27 * The listener interface for receiving webSocketMessage events. The class that is interested in processing a
28 * webSocketMessage event implements this interface, and the object created with that class is registered with a
29 * component using the component's addWebSocketMessageListener method. When the webSocketMessage event occurs, that
30 * object's appropriate method is invoked.
32 * @author Sajeevan Achuthan (sajeevan.achuthan@ericsson.com)
33 * @param <MESSAGE> the generic type
34 * @see RawMessageBlock
36 public interface WebSocketMessageListener<MESSAGE> extends MessageListener<MESSAGE>, Runnable {
39 * This method is called by the class with which this message listener has been registered.
41 * @param incomingData the data forwarded by the message reception class
43 void onMessage(RawMessageBlock incomingData);
46 * Register a data forwarder to which messages coming in on the web socket will be forwarded.
48 * @param listener The listener to register
50 void registerDataForwarder(MessageListener<MESSAGE> listener);
53 * Unregister a data forwarder that was previously registered on the web socket listener.
55 * @param listener The listener to unregister
57 void unRegisterDataForwarder(MessageListener<MESSAGE> listener);