geode-core/src/main/java/org/apache/geode/internal/cache/versions/VMRegionVersionVector.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The ASF licenses this file to You 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 org.apache.geode.internal.cache.versions;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.geode.distributed.internal.DistributionManager;
import org.apache.geode.distributed.internal.membership.InternalDistributedMember;
import org.apache.geode.internal.cache.LocalRegion;

/**
 * A region version vector for regions without persistent data. This region version vector uses the
 * InternalDistributedMember as the member id.
 *
 */
public class VMRegionVersionVector extends RegionVersionVector<InternalDistributedMember> {

  /** for deserialization */
  public VMRegionVersionVector() {
    super();
  }

  public VMRegionVersionVector(InternalDistributedMember ownerId, LocalRegion owner) {
    super(ownerId, owner);
  }

  public VMRegionVersionVector(InternalDistributedMember ownerId) {
    super(ownerId);
  }

  public VMRegionVersionVector(InternalDistributedMember ownerId,
      ConcurrentHashMap<InternalDistributedMember, RegionVersionHolder<InternalDistributedMember>> vector,
      long version, ConcurrentHashMap<InternalDistributedMember, Long> gcVersions, long gcVersion,
      boolean singleMember, RegionVersionHolder<InternalDistributedMember> localExceptions) {
    super(ownerId, vector, version, gcVersions, gcVersion, singleMember, localExceptions);
  }

  @Override
  protected RegionVersionVector createCopy(InternalDistributedMember ownerId,
      ConcurrentHashMap<InternalDistributedMember, RegionVersionHolder<InternalDistributedMember>> vector,
      long version, ConcurrentHashMap<InternalDistributedMember, Long> gcVersions, long gcVersion,
      boolean singleMember, RegionVersionHolder<InternalDistributedMember> localExceptions) {
    return new VMRegionVersionVector(ownerId, vector, version, gcVersions, gcVersion, singleMember,
        localExceptions);
  }

  @Override
  protected void writeMember(InternalDistributedMember member, DataOutput out) throws IOException {
    member.writeEssentialData(out);

  }

  @Override
  protected InternalDistributedMember readMember(DataInput in)
      throws IOException, ClassNotFoundException {
    return InternalDistributedMember.readEssentialData(in);
  }

  @Override
  public int getDSFID() {
    return REGION_VERSION_VECTOR;
  }

  @Override
  public void memberDeparted(DistributionManager distributionManager,
      final InternalDistributedMember id, boolean crashed) {
    super.memberDeparted(distributionManager, id, crashed);
    removeOldMember(id);
  }

  /**
   * remove an old member from the vector
   */
  private void removeOldMember(InternalDistributedMember id) {
    super.markDepartedMember(id);
  }

}