/*
* Copyright (c) 2008-2013, Hazelcast, Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hazelcast.topic.client;
import com.hazelcast.client.CallableClientRequest;
import com.hazelcast.client.ClientEndpoint;
import com.hazelcast.client.ClientEngine;
import com.hazelcast.client.RetryableRequest;
import com.hazelcast.client.SecureRequest;
import com.hazelcast.core.Message;
import com.hazelcast.core.MessageListener;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.nio.serialization.Portable;
import com.hazelcast.nio.serialization.PortableReader;
import com.hazelcast.nio.serialization.PortableWriter;
import com.hazelcast.security.permission.ActionConstants;
import com.hazelcast.security.permission.TopicPermission;
import com.hazelcast.topic.TopicPortableHook;
import com.hazelcast.topic.TopicService;
import java.io.IOException;
import java.security.Permission;
public class AddMessageListenerRequest extends CallableClientRequest
implements Portable, SecureRequest, RetryableRequest {
private String name;
public AddMessageListenerRequest() {
}
public AddMessageListenerRequest(String name) {
this.name = name;
}
@Override
public String call() throws Exception {
TopicService service = getService();
ClientEngine clientEngine = getClientEngine();
ClientEndpoint endpoint = getEndpoint();
MessageListener listener = new MessageListenerImpl(endpoint, clientEngine, getCallId());
String registrationId = service.addMessageListener(name, listener);
endpoint.setListenerRegistration(TopicService.SERVICE_NAME, name, registrationId);
return registrationId;
}
@Override
public String getServiceName() {
return TopicService.SERVICE_NAME;
}
@Override
public int getFactoryId() {
return TopicPortableHook.F_ID;
}
@Override
public int getClassId() {
return TopicPortableHook.ADD_LISTENER;
}
@Override
public void write(PortableWriter writer) throws IOException {
writer.writeUTF("n", name);
}
@Override
public void read(PortableReader reader) throws IOException {
name = reader.readUTF("n");
}
@Override
public Permission getRequiredPermission() {
return new TopicPermission(name, ActionConstants.ACTION_LISTEN);
}
private static class MessageListenerImpl implements MessageListener {
private final ClientEndpoint endpoint;
private final ClientEngine clientEngine;
private final int callId;
public MessageListenerImpl(ClientEndpoint endpoint, ClientEngine clientEngine, int callId) {
this.endpoint = endpoint;
this.clientEngine = clientEngine;
this.callId = callId;
}
@Override
public void onMessage(Message message) {
if (!endpoint.live()) {
return;
}
Data messageData = clientEngine.toData(message.getMessageObject());
String publisherUuid = message.getPublishingMember().getUuid();
PortableMessage portableMessage = new PortableMessage(messageData, message.getPublishTime(), publisherUuid);
endpoint.sendEvent(portableMessage, callId);
}
}
}