com.hazelcast.client.proxy.PartitionServiceProxy Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2020, 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.impl.protocol.ClientMessage;
import com.hazelcast.client.impl.protocol.codec.ClientAddPartitionLostListenerCodec;
import com.hazelcast.client.impl.protocol.codec.ClientRemovePartitionLostListenerCodec;
import com.hazelcast.client.spi.ClientListenerService;
import com.hazelcast.client.spi.ClientPartitionService;
import com.hazelcast.client.spi.EventHandler;
import com.hazelcast.client.spi.impl.ListenerMessageCodec;
import com.hazelcast.core.Member;
import com.hazelcast.core.MigrationListener;
import com.hazelcast.core.Partition;
import com.hazelcast.core.PartitionService;
import com.hazelcast.nio.Address;
import com.hazelcast.partition.PartitionLostEvent;
import com.hazelcast.partition.PartitionLostListener;
import java.util.LinkedHashSet;
import java.util.Random;
import java.util.Set;
import java.util.concurrent.TimeUnit;
/**
* @author mdogan 5/16/13
*/
public final class PartitionServiceProxy implements PartitionService {
private final ClientPartitionService partitionService;
private final ClientListenerService listenerService;
private final Random random = new Random();
public PartitionServiceProxy(ClientPartitionService partitionService, ClientListenerService listenerService) {
this.partitionService = partitionService;
this.listenerService = listenerService;
}
@Override
public String randomPartitionKey() {
return Integer.toString(random.nextInt(partitionService.getPartitionCount()));
}
@Override
public Set getPartitions() {
final int partitionCount = partitionService.getPartitionCount();
Set partitions = new LinkedHashSet(partitionCount);
for (int i = 0; i < partitionCount; i++) {
final Partition partition = partitionService.getPartition(i);
partitions.add(partition);
}
return partitions;
}
@Override
public Partition getPartition(Object key) {
final int partitionId = partitionService.getPartitionId(key);
return partitionService.getPartition(partitionId);
}
@Override
public String addMigrationListener(MigrationListener migrationListener) {
throw new UnsupportedOperationException();
}
@Override
public boolean removeMigrationListener(String registrationId) {
throw new UnsupportedOperationException();
}
@Override
public String addPartitionLostListener(PartitionLostListener partitionLostListener) {
EventHandler handler = new ClientPartitionLostEventHandler(partitionLostListener);
return listenerService.registerListener(createPartitionLostListenerCodec(), handler);
}
private ListenerMessageCodec createPartitionLostListenerCodec() {
return new ListenerMessageCodec() {
@Override
public ClientMessage encodeAddRequest(boolean localOnly) {
return ClientAddPartitionLostListenerCodec.encodeRequest(localOnly);
}
@Override
public String decodeAddResponse(ClientMessage clientMessage) {
return ClientAddPartitionLostListenerCodec.decodeResponse(clientMessage).response;
}
@Override
public ClientMessage encodeRemoveRequest(String realRegistrationId) {
return ClientRemovePartitionLostListenerCodec.encodeRequest(realRegistrationId);
}
@Override
public boolean decodeRemoveResponse(ClientMessage clientMessage) {
return ClientRemovePartitionLostListenerCodec.decodeResponse(clientMessage).response;
}
};
}
@Override
public boolean removePartitionLostListener(String registrationId) {
return listenerService.deregisterListener(registrationId);
}
@Override
public boolean isClusterSafe() {
throw new UnsupportedOperationException();
}
@Override
public boolean isMemberSafe(Member member) {
throw new UnsupportedOperationException();
}
@Override
public boolean isLocalMemberSafe() {
throw new UnsupportedOperationException();
}
@Override
public boolean forceLocalMemberToBeSafe(long timeout, TimeUnit unit) {
throw new UnsupportedOperationException();
}
private static class ClientPartitionLostEventHandler extends ClientAddPartitionLostListenerCodec.AbstractEventHandler
implements EventHandler {
private PartitionLostListener listener;
public ClientPartitionLostEventHandler(PartitionLostListener listener) {
this.listener = listener;
}
@Override
public void handlePartitionLostEventV10(int partitionId, int lostBackupCount, Address source) {
listener.partitionLost(new PartitionLostEvent(partitionId, lostBackupCount, source));
}
@Override
public void beforeListenerRegister() {
}
@Override
public void onListenerRegister() {
}
}
}