/*
* Copyright (c) 2008-2017, 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.impl.protocol.task;
import com.hazelcast.client.impl.protocol.ClientMessage;
import com.hazelcast.client.impl.protocol.codec.ClientAddDistributedObjectListenerCodec;
import com.hazelcast.core.DistributedObjectEvent;
import com.hazelcast.core.DistributedObjectListener;
import com.hazelcast.instance.Node;
import com.hazelcast.internal.cluster.ClusterService;
import com.hazelcast.nio.Connection;
import com.hazelcast.spi.ProxyService;
import com.hazelcast.spi.impl.proxyservice.impl.ProxyServiceImpl;
import java.security.Permission;
import java.util.concurrent.Callable;
public class AddDistributedObjectListenerMessageTask
extends AbstractCallableMessageTask<ClientAddDistributedObjectListenerCodec.RequestParameters>
implements DistributedObjectListener {
public AddDistributedObjectListenerMessageTask(ClientMessage clientMessage, Node node, Connection connection) {
super(clientMessage, node, connection);
}
@Override
protected Object call() throws Exception {
final ProxyService proxyService = clientEngine.getProxyService();
final String registrationId = proxyService.addProxyListener(this);
endpoint.addDestroyAction(registrationId, new Callable() {
@Override
public Boolean call() {
return proxyService.removeProxyListener(registrationId);
}
});
return registrationId;
}
@Override
protected ClientAddDistributedObjectListenerCodec.RequestParameters decodeClientMessage(ClientMessage clientMessage) {
return ClientAddDistributedObjectListenerCodec.decodeRequest(clientMessage);
}
@Override
protected ClientMessage encodeResponse(Object response) {
return ClientAddDistributedObjectListenerCodec.encodeResponse((String) response);
}
@Override
public String getServiceName() {
return ProxyServiceImpl.SERVICE_NAME;
}
@Override
public Permission getRequiredPermission() {
return null;
}
@Override
public String getDistributedObjectName() {
return null;
}
@Override
public String getMethodName() {
return "addDistributedObjectListener";
}
@Override
public Object[] getParameters() {
return null;
}
@Override
public void distributedObjectCreated(DistributedObjectEvent event) {
send(event);
}
@Override
public void distributedObjectDestroyed(DistributedObjectEvent event) {
send(event);
}
private void send(DistributedObjectEvent event) {
if (!shouldSendEvent()) {
return;
}
String name = (String) event.getObjectName();
String serviceName = event.getServiceName();
ClientMessage eventMessage =
ClientAddDistributedObjectListenerCodec.encodeDistributedObjectEvent(name,
serviceName, event.getEventType().name());
sendClientMessage(null, eventMessage);
}
private boolean shouldSendEvent() {
if (!endpoint.isAlive()) {
return false;
}
ClusterService clusterService = clientEngine.getClusterService();
boolean currentMemberIsMaster = clusterService.getMasterAddress().equals(clientEngine.getThisAddress());
if (parameters.localOnly && !currentMemberIsMaster) {
//if client registered localOnly, only master is allowed to send request
return false;
}
return true;
}
}