/*
* 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.codec.ContinuousQueryPublisherCreateCodec;
import com.hazelcast.client.impl.protocol.task.AbstractCallableMessageTask;
import com.hazelcast.instance.MemberImpl;
import com.hazelcast.instance.Node;
import com.hazelcast.internal.cluster.ClusterService;
import com.hazelcast.map.impl.MapService;
import com.hazelcast.map.impl.query.QueryResult;
import com.hazelcast.map.impl.query.QueryResultRow;
import com.hazelcast.map.impl.querycache.accumulator.AccumulatorInfo;
import com.hazelcast.map.impl.querycache.subscriber.operation.PublisherCreateOperation;
import com.hazelcast.nio.Address;
import com.hazelcast.nio.Connection;
import com.hazelcast.nio.serialization.Data;
import com.hazelcast.query.Predicate;
import com.hazelcast.spi.InvocationBuilder;
import com.hazelcast.spi.impl.operationservice.InternalOperationService;
import com.hazelcast.util.ExceptionUtil;
import java.security.Permission;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.concurrent.Future;
import static com.hazelcast.map.impl.MapService.SERVICE_NAME;
/**
* Client Protocol Task for handling messages with type id:
* {@link com.hazelcast.client.impl.protocol.codec.ContinuousQueryMessageType#CONTINUOUSQUERY_PUBLISHERCREATE}
*/
public class MapPublisherCreateMessageTask
extends AbstractCallableMessageTask<ContinuousQueryPublisherCreateCodec.RequestParameters> {
public MapPublisherCreateMessageTask(ClientMessage clientMessage, Node node, Connection connection) {
super(clientMessage, node, connection);
}
@Override
protected Object call() throws Exception {
ClusterService clusterService = clientEngine.getClusterService();
Collection<MemberImpl> members = clusterService.getMemberImpls();
List<Future> futures = new ArrayList<Future>(members.size());
createInvocations(members, futures);
return getQueryResults(futures);
}
private void createInvocations(Collection<MemberImpl> members, List<Future> futures) {
final InternalOperationService operationService = nodeEngine.getOperationService();
final ClientEndpoint endpoint = getEndpoint();
for (MemberImpl member : members) {
Predicate predicate = serializationService.toObject(parameters.predicate);
AccumulatorInfo accumulatorInfo =
AccumulatorInfo.createAccumulatorInfo(parameters.mapName, parameters.cacheName, predicate,
parameters.batchSize, parameters.bufferSize, parameters.delaySeconds,
false, parameters.populate, parameters.coalesce);
PublisherCreateOperation operation = new PublisherCreateOperation(accumulatorInfo);
operation.setCallerUuid(endpoint.getUuid());
Address address = member.getAddress();
InvocationBuilder invocationBuilder = operationService.createInvocationBuilder(SERVICE_NAME, operation, address);
Future future = invocationBuilder.invoke();
futures.add(future);
}
}
private Set<Data> getQueryResults(List<Future> futures) {
Set<Data> results = new HashSet<Data>(futures.size());
for (Future future : futures) {
Object result = null;
try {
result = future.get();
} catch (Throwable t) {
ExceptionUtil.rethrow(t);
}
if (result == null) {
continue;
}
QueryResult queryResult = (QueryResult) result;
for (QueryResultRow row : queryResult) {
results.add(row.getKey());
}
}
return results;
}
@Override
protected ContinuousQueryPublisherCreateCodec.RequestParameters decodeClientMessage(ClientMessage clientMessage) {
return ContinuousQueryPublisherCreateCodec.decodeRequest(clientMessage);
}
@Override
protected ClientMessage encodeResponse(Object response) {
return ContinuousQueryPublisherCreateCodec.encodeResponse((Set<Data>) response);
}
@Override
public String getServiceName() {
return MapService.SERVICE_NAME;
}
@Override
public Permission getRequiredPermission() {
return null;
}
@Override
public String getDistributedObjectName() {
return null;
}
@Override
public String getMethodName() {
return null;
}
@Override
public Object[] getParameters() {
return null;
}
}