/*
* 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.cache.impl.nearcache.invalidation;
import com.hazelcast.client.impl.HazelcastClientInstanceImpl;
import com.hazelcast.client.impl.protocol.ClientMessage;
import com.hazelcast.client.impl.protocol.codec.CacheAssignAndGetUuidsCodec;
import com.hazelcast.client.impl.protocol.codec.CacheFetchNearCacheInvalidationMetadataCodec;
import com.hazelcast.client.impl.protocol.codec.MapAssignAndGetUuidsCodec;
import com.hazelcast.client.spi.ClientClusterService;
import com.hazelcast.client.spi.ClientContext;
import com.hazelcast.client.spi.impl.ClientInvocation;
import com.hazelcast.core.Member;
import com.hazelcast.internal.nearcache.impl.invalidation.MetaDataFetcher;
import com.hazelcast.internal.nearcache.impl.invalidation.RepairingHandler;
import com.hazelcast.logging.Logger;
import com.hazelcast.nio.Address;
import com.hazelcast.spi.InternalCompletableFuture;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeoutException;
import static com.hazelcast.client.impl.protocol.codec.CacheFetchNearCacheInvalidationMetadataCodec.decodeResponse;
import static com.hazelcast.client.impl.protocol.codec.CacheFetchNearCacheInvalidationMetadataCodec.encodeRequest;
import static com.hazelcast.cluster.memberselector.MemberSelectors.DATA_MEMBER_SELECTOR;
import static java.util.concurrent.TimeUnit.MINUTES;
/**
* {@code MetaDataFetcher} for client side usage
*/
public class ClientCacheMetaDataFetcher extends MetaDataFetcher {
private final ClientClusterService clusterService;
private final HazelcastClientInstanceImpl clientImpl;
public ClientCacheMetaDataFetcher(ClientContext clientContext) {
super(Logger.getLogger(ClientCacheMetaDataFetcher.class));
this.clusterService = clientContext.getClusterService();
this.clientImpl = (HazelcastClientInstanceImpl) clientContext.getHazelcastInstance();
}
@Override
protected List<InternalCompletableFuture> scanMembers(List<String> names) {
Collection<Member> members = clusterService.getMembers(DATA_MEMBER_SELECTOR);
List<InternalCompletableFuture> futures = new ArrayList<InternalCompletableFuture>(members.size());
for (Member member : members) {
Address address = member.getAddress();
ClientMessage message = encodeRequest(names, address);
ClientInvocation invocation = new ClientInvocation(clientImpl, message, address);
try {
futures.add(invocation.invoke());
} catch (Exception e) {
if (logger.isWarningEnabled()) {
logger.warning("Cant fetch invalidation meta-data from address + " + address + " + [" + e.getMessage() + "]");
}
}
}
return futures;
}
@Override
protected void process(InternalCompletableFuture future, ConcurrentMap<String, RepairingHandler> handlers) {
try {
CacheFetchNearCacheInvalidationMetadataCodec.ResponseParameters response = extractResponse(future);
repairUuids(response.partitionUuidList, handlers);
repairSequences(response.namePartitionSequenceList, handlers);
} catch (Exception e) {
if (logger.isWarningEnabled()) {
logger.warning("Cant fetch invalidation meta-data [" + e.getMessage() + "]");
}
}
}
private CacheFetchNearCacheInvalidationMetadataCodec.ResponseParameters extractResponse(InternalCompletableFuture future)
throws InterruptedException, ExecutionException, TimeoutException {
ClientMessage message = ((ClientMessage) future.get(1, MINUTES));
return decodeResponse(message);
}
@Override
public List<Map.Entry<Integer, UUID>> assignAndGetUuids() throws Exception {
ClientMessage request = MapAssignAndGetUuidsCodec.encodeRequest();
ClientInvocation invocation = new ClientInvocation(clientImpl, request);
CacheAssignAndGetUuidsCodec.ResponseParameters responseParameters
= CacheAssignAndGetUuidsCodec.decodeResponse(invocation.invoke().get());
return responseParameters.partitionUuidList;
}
}