com.hazelcast.client.cache.impl.nearcache.invalidation.ClientCacheMetaDataFetcher Maven / Gradle / Ivy

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/*
 * 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.CacheFetchNearCacheInvalidationMetadataCodec.ResponseParameters;
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.nio.Address;
import com.hazelcast.spi.InternalCompletableFuture;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

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(clientContext.getLoggingService().getLogger(ClientCacheMetaDataFetcher.class));
        this.clusterService = clientContext.getClusterService();
        this.clientImpl = (HazelcastClientInstanceImpl) clientContext.getHazelcastInstance();
    }

    @Override
    protected void extractAndPopulateResult(InternalCompletableFuture future, ResultHolder resultHolder) throws Exception {
        ClientMessage message = ((ClientMessage) future.get(ASYNC_RESULT_WAIT_TIMEOUT_MINUTES, MINUTES));
        ResponseParameters response = decodeResponse(message);

        resultHolder.populate(response.partitionUuidList, response.namePartitionSequenceList);
    }

    @Override
    protected List scanMembers(List names) {
        Collection members = clusterService.getMembers(DATA_MEMBER_SELECTOR);
        List futures = new ArrayList(members.size());

        for (Member member : members) {
            Address address = member.getAddress();
            ClientMessage message = encodeRequest(names, address);
            ClientInvocation invocation = new ClientInvocation(clientImpl, message, null, 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;
    }
}