/*
* 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;
import com.hazelcast.core.Member;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.spi.EventRegistration;
import com.hazelcast.spi.EventService;
import com.hazelcast.spi.impl.AbstractNamedOperation;
import java.io.IOException;
import java.util.Collection;
import java.util.concurrent.locks.Lock;
public class PublishOperation extends AbstractNamedOperation {
private Data message;
public PublishOperation() {
}
public PublishOperation(String name, Data message) {
super(name);
this.message = message;
}
@Override
public void beforeRun() throws Exception {
((TopicService) getService()).incrementPublishes(name);
}
@Override
public void run() throws Exception {
TopicService service = getService();
Member publishingMember = getNodeEngine().getClusterService().getMember(getCallerAddress());
TopicEvent topicEvent = new TopicEvent(name, message, publishingMember);
EventService eventService = getNodeEngine().getEventService();
Collection<EventRegistration> registrations = eventService.getRegistrations(TopicService.SERVICE_NAME, name);
Lock lock = service.getOrderLock(name);
lock.lock();
try {
eventService.publishEvent(TopicService.SERVICE_NAME, registrations, topicEvent, name.hashCode());
} finally {
lock.unlock();
}
}
@Override
public boolean returnsResponse() {
return true;
}
@Override
protected void writeInternal(ObjectDataOutput out) throws IOException {
super.writeInternal(out);
message.writeData(out);
}
@Override
protected void readInternal(ObjectDataInput in) throws IOException {
super.readInternal(in);
message = new Data();
message.readData(in);
}
}