hadoop-ozone/client/src/main/java/org/apache/hadoop/ozone/client/OzoneKeyLocation.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.hadoop.ozone.client;

/**
 * One key can be stored in one or more containers as one or more blocks.
 * This class represents one such block instance.
 */
public class OzoneKeyLocation {
  /**
   * Which container this key stored.
   */
  private final long containerID;
  /**
   * Which block this key stored inside a container.
   */
  private final long localID;
  /**
   * Data length of this key replica.
   */
  private final long length;
  /**
   * Offset of this key.
   */
  private final long offset;

  /**
   * Constructs OzoneKeyLocation.
   */
  public OzoneKeyLocation(long containerID, long localID,
                  long length, long offset) {
    this.containerID = containerID;
    this.localID = localID;
    this.length = length;
    this.offset = offset;
  }

  /**
   * Returns the containerID of this Key.
   */
  public long getContainerID() {
    return containerID;
  }

  /**
   * Returns the localID of this Key.
   */
  public long getLocalID() {
    return localID;
  }

  /**
   * Returns the length of this Key.
   */
  public long getLength() {
    return length;
  }

  /**
   * Returns the offset of this Key.
   */
  public long getOffset() {
    return offset;
  }

}