/*
* 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.client.proxy;
import com.hazelcast.client.ClientRequest;
import com.hazelcast.client.spi.ClientProxy;
import com.hazelcast.client.spi.EventHandler;
import com.hazelcast.core.ITopic;
import com.hazelcast.core.Member;
import com.hazelcast.core.Message;
import com.hazelcast.core.MessageListener;
import com.hazelcast.monitor.LocalTopicStats;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.topic.client.AddMessageListenerRequest;
import com.hazelcast.topic.client.PortableMessage;
import com.hazelcast.topic.client.PublishRequest;
import com.hazelcast.topic.client.RemoveMessageListenerRequest;
/**
* @author ali 5/24/13
*/
public class ClientTopicProxy<E> extends ClientProxy implements ITopic<E> {
private final String name;
private volatile Data key;
public ClientTopicProxy(String instanceName, String serviceName, String objectId) {
super(instanceName, serviceName, objectId);
this.name = objectId;
}
public void publish(E message) {
final Data data = getContext().getSerializationService().toData(message);
PublishRequest request = new PublishRequest(name, data);
invoke(request);
}
public String addMessageListener(final MessageListener<E> listener) {
AddMessageListenerRequest request = new AddMessageListenerRequest(name);
EventHandler<PortableMessage> handler = new EventHandler<PortableMessage>() {
public void handle(PortableMessage event) {
E messageObject = (E) getContext().getSerializationService().toObject(event.getMessage());
Member member = getContext().getClusterService().getMember(event.getUuid());
Message<E> message = new Message<E>(name, messageObject, event.getPublishTime(), member);
listener.onMessage(message);
}
@Override
public void onListenerRegister() {
}
};
return listen(request, getKey(), handler);
}
public boolean removeMessageListener(String registrationId) {
final RemoveMessageListenerRequest request = new RemoveMessageListenerRequest(name, registrationId);
return stopListening(request, registrationId);
}
public LocalTopicStats getLocalTopicStats() {
throw new UnsupportedOperationException("Locality is ambiguous for client!!!");
}
protected void onDestroy() {
}
private Data getKey() {
if (key == null) {
key = getContext().getSerializationService().toData(name);
}
return key;
}
protected <T> T invoke(ClientRequest req) {
return super.invoke(req, getKey());
}
@Override
public String toString() {
return "ITopic{" + "name='" + getName() + '\'' + '}';
}
}