hadoop-hdds/common/src/main/java/org/apache/hadoop/hdds/client/ContainerBlockID.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
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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.hadoop.hdds.client;

import org.apache.hadoop.hdds.protocol.proto.HddsProtos;

import java.util.Objects;

/**
 * BlockID returned by SCM during allocation of block (containerID + localID).
 */
public class ContainerBlockID {
  private long containerID;
  private long localID;

  public ContainerBlockID(long containerID, long localID) {
    this.containerID = containerID;
    this.localID = localID;
  }

  public long getContainerID() {
    return containerID;
  }

  public long getLocalID() {
    return localID;
  }

  @Override
  public String toString() {
    return new StringBuffer()
        .append("conID: ")
        .append(containerID)
        .append(" locID: ")
        .append(localID).toString();
  }

  public HddsProtos.ContainerBlockID getProtobuf() {
    return HddsProtos.ContainerBlockID.newBuilder().
        setContainerID(containerID).setLocalID(localID).build();
  }

  public static ContainerBlockID getFromProtobuf(
      HddsProtos.ContainerBlockID containerBlockID) {
    return new ContainerBlockID(containerBlockID.getContainerID(),
        containerBlockID.getLocalID());
  }

  @Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }
    ContainerBlockID blockID = (ContainerBlockID) o;
    return containerID == blockID.containerID && localID == blockID.localID;
  }

  @Override
  public int hashCode() {
    return Objects.hash(containerID, localID);
  }
}