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MapExecuteOnKeysMessageTask.java
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MapExecuteOnKeysMessageTask.java
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/*
* 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.impl.protocol.task.map;
import com.hazelcast.client.impl.protocol.ClientMessage;
import com.hazelcast.client.impl.protocol.codec.MapExecuteOnKeysCodec;
import com.hazelcast.client.impl.protocol.task.AbstractMultiPartitionMessageTask;
import com.hazelcast.instance.Node;
import com.hazelcast.map.EntryProcessor;
import com.hazelcast.map.impl.MapEntries;
import com.hazelcast.map.impl.MapService;
import com.hazelcast.map.impl.operation.MapOperationProvider;
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.OperationFactory;
import com.hazelcast.spi.partition.IPartitionService;
import java.security.Permission;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import static com.hazelcast.util.SetUtil.createHashSet;
public class MapExecuteOnKeysMessageTask
extends AbstractMultiPartitionMessageTask<MapExecuteOnKeysCodec.RequestParameters> {
public MapExecuteOnKeysMessageTask(ClientMessage clientMessage, Node node, Connection connection) {
super(clientMessage, node, connection);
}
@Override
protected OperationFactory createOperationFactory() {
EntryProcessor processor = serializationService.toObject(parameters.entryProcessor);
MapOperationProvider operationProvider = getMapOperationProvider(parameters.name);
return operationProvider.createMultipleEntryOperationFactory(parameters.name,
new HashSet<>(parameters.keys), processor);
}
@Override
protected Object reduce(Map<Integer, Object> map) {
List<Map.Entry<Data, Data>> entries = new ArrayList<Map.Entry<Data, Data>>();
MapService mapService = getService(MapService.SERVICE_NAME);
for (Object o : map.values()) {
if (o != null) {
MapEntries mapEntries = (MapEntries) mapService.getMapServiceContext().toObject(o);
mapEntries.putAllToList(entries);
}
}
return entries;
}
@Override
public Collection<Integer> getPartitions() {
IPartitionService partitionService = nodeEngine.getPartitionService();
int partitions = partitionService.getPartitionCount();
int capacity = Math.min(partitions, parameters.keys.size());
Set<Integer> partitionIds = createHashSet(capacity);
Iterator<Data> iterator = parameters.keys.iterator();
while (iterator.hasNext() && partitionIds.size() < partitions) {
Data key = iterator.next();
partitionIds.add(partitionService.getPartitionId(key));
}
return partitionIds;
}
@Override
protected MapExecuteOnKeysCodec.RequestParameters decodeClientMessage(ClientMessage clientMessage) {
return MapExecuteOnKeysCodec.decodeRequest(clientMessage);
}
@Override
protected ClientMessage encodeResponse(Object response) {
return MapExecuteOnKeysCodec.encodeResponse((List<Map.Entry<Data, Data>>) response);
}
@Override
public String getServiceName() {
return MapService.SERVICE_NAME;
}
@Override
public Permission getRequiredPermission() {
return new MapPermission(parameters.name, ActionConstants.ACTION_PUT, ActionConstants.ACTION_REMOVE);
}
@Override
public String getDistributedObjectName() {
return parameters.name;
}
@Override
public String getMethodName() {
return "executeOnKeys";
}
@Override
public Object[] getParameters() {
return new Object[]{parameters.keys, parameters.entryProcessor};
}
}