com.hazelcast.partition.impl.IsReplicaVersionSync Maven / Gradle / Ivy

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/*
 * Copyright (c) 2008-2016, 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.partition.impl;

import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.partition.MigrationCycleOperation;
import com.hazelcast.spi.Operation;
import com.hazelcast.spi.PartitionAwareOperation;

import java.io.IOException;

/**
 * Queries if replica version is sync between partitions.
 */
public class IsReplicaVersionSync extends Operation implements PartitionAwareOperation, MigrationCycleOperation {

    private long version;
    private transient boolean result;


    public IsReplicaVersionSync() {
    }

    public IsReplicaVersionSync(long version) {
        this.version = version;
    }

    @Override
    public void beforeRun() throws Exception {

    }

    @Override
    public void run() throws Exception {
        final InternalPartitionServiceImpl partitionService = getService();
        final int partitionId = getPartitionId();
        final int replicaIndex = getReplicaIndex();
        final long[] currentVersions = partitionService.getPartitionReplicaVersions(partitionId);
        final long currentVersion = currentVersions[replicaIndex - 1];
        if (currentVersion == version) {
            result = true;
        }
    }

    @Override
    public void afterRun() throws Exception {

    }

    @Override
    public boolean returnsResponse() {
        return true;
    }

    @Override
    public Object getResponse() {
        return result;
    }

    @Override
    protected void writeInternal(ObjectDataOutput out) throws IOException {
        out.writeLong(version);
    }

    @Override
    protected void readInternal(ObjectDataInput in) throws IOException {
        version = in.readLong();
    }
}