/*
* 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.map;
import com.hazelcast.client.ClientEndpoint;
import com.hazelcast.client.impl.protocol.ClientMessage;
import com.hazelcast.client.impl.protocol.task.AbstractCallableMessageTask;
import com.hazelcast.core.EntryEvent;
import com.hazelcast.core.EntryEventType;
import com.hazelcast.core.MapEvent;
import com.hazelcast.instance.Node;
import com.hazelcast.map.impl.DataAwareEntryEvent;
import com.hazelcast.map.impl.MapListenerAdapter;
import com.hazelcast.map.impl.MapService;
import com.hazelcast.map.impl.MapServiceContext;
import com.hazelcast.nio.Connection;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.security.permission.ActionConstants;
import com.hazelcast.security.permission.MapPermission;
import com.hazelcast.spi.EventFilter;
import java.security.Permission;
public abstract class AbstractMapAddEntryListenerMessageTask<Parameter>
extends AbstractCallableMessageTask<Parameter> {
public AbstractMapAddEntryListenerMessageTask(ClientMessage clientMessage, Node node, Connection connection) {
super(clientMessage, node, connection);
}
@Override
protected Object call() {
final ClientEndpoint endpoint = getEndpoint();
final MapService mapService = getService(MapService.SERVICE_NAME);
Object listener = newMapListener();
MapServiceContext mapServiceContext = mapService.getMapServiceContext();
String name = getDistributedObjectName();
EventFilter eventFilter = getEventFilter();
String registrationId;
if (isLocalOnly()) {
registrationId = mapServiceContext.addLocalEventListener(listener, eventFilter, name);
} else {
registrationId = mapServiceContext.addEventListener(listener, eventFilter, name);
}
endpoint.addListenerDestroyAction(MapService.SERVICE_NAME, name, registrationId);
return registrationId;
}
protected Object newMapListener() {
return new ClientMapListener();
}
protected abstract EventFilter getEventFilter();
protected abstract boolean isLocalOnly();
@Override
public String getServiceName() {
return MapService.SERVICE_NAME;
}
@Override
public String getMethodName() {
return "addEntryListener";
}
@Override
public Permission getRequiredPermission() {
return new MapPermission(getDistributedObjectName(), ActionConstants.ACTION_LISTEN);
}
private class ClientMapListener extends MapListenerAdapter<Object, Object> {
@Override
public void onEntryEvent(EntryEvent<Object, Object> event) {
if (!endpoint.isAlive()) {
return;
}
if (!(event instanceof DataAwareEntryEvent)) {
throw new IllegalArgumentException(
"Expecting: DataAwareEntryEvent, Found: " + event.getClass().getSimpleName());
}
DataAwareEntryEvent dataAwareEntryEvent = (DataAwareEntryEvent) event;
Data keyData = dataAwareEntryEvent.getKeyData();
Data newValueData = dataAwareEntryEvent.getNewValueData();
Data oldValueData = dataAwareEntryEvent.getOldValueData();
Data meringValueData = dataAwareEntryEvent.getMergingValueData();
sendClientMessage(keyData, encodeEvent(keyData
, newValueData, oldValueData, meringValueData, event.getEventType().getType(),
event.getMember().getUuid(), 1));
}
@Override
public void onMapEvent(MapEvent event) {
if (!endpoint.isAlive()) {
return;
}
EntryEventType type = event.getEventType();
String uuid = event.getMember().getUuid();
int numberOfEntriesAffected = event.getNumberOfEntriesAffected();
sendClientMessage(null, encodeEvent(null,
null, null, null, type.getType(), uuid, numberOfEntriesAffected));
}
}
protected abstract ClientMessage encodeEvent(Data keyData, Data newValueData,
Data oldValueData, Data meringValueData,
int type, String uuid, int numberOfEntriesAffected);
}