001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.apache.hadoop.hdfs.server.protocol;
020
021import org.apache.hadoop.hdfs.protocol.Block;
022
023/**
024 * A data structure to store the blocks in an incremental block report. 
025 */
026public class ReceivedDeletedBlockInfo {
027  Block block;
028  BlockStatus status;
029  String delHints;
030
031  public static enum BlockStatus {
032    RECEIVING_BLOCK(1),
033    RECEIVED_BLOCK(2),
034    DELETED_BLOCK(3);
035    
036    private final int code;
037    BlockStatus(int code) {
038      this.code = code;
039    }
040    
041    public int getCode() {
042      return code;
043    }
044    
045    public static BlockStatus fromCode(int code) {
046      for (BlockStatus bs : BlockStatus.values()) {
047        if (bs.code == code) {
048          return bs;
049        }
050      }
051      return null;
052    }
053  }
054
055  public ReceivedDeletedBlockInfo() {
056  }
057
058  public ReceivedDeletedBlockInfo(
059      Block blk, BlockStatus status, String delHints) {
060    this.block = blk;
061    this.status = status;
062    this.delHints = delHints;
063  }
064
065  public Block getBlock() {
066    return this.block;
067  }
068
069  public void setBlock(Block blk) {
070    this.block = blk;
071  }
072
073  public String getDelHints() {
074    return this.delHints;
075  }
076
077  public void setDelHints(String hints) {
078    this.delHints = hints;
079  }
080
081  public BlockStatus getStatus() {
082    return status;
083  }
084
085  @Override
086  public boolean equals(Object o) {
087    if (!(o instanceof ReceivedDeletedBlockInfo)) {
088      return false;
089    }
090    ReceivedDeletedBlockInfo other = (ReceivedDeletedBlockInfo) o;
091    return this.block.equals(other.getBlock())
092        && this.status == other.status
093        && this.delHints != null
094        && this.delHints.equals(other.delHints);
095  }
096
097  @Override
098  public int hashCode() {
099    assert false : "hashCode not designed";
100    return 0; 
101  }
102
103  public boolean blockEquals(Block b) {
104    return this.block.equals(b);
105  }
106
107  public boolean isDeletedBlock() {
108    return status == BlockStatus.DELETED_BLOCK;
109  }
110
111  @Override
112  public String toString() {
113    return block.toString() + ", status: " + status +
114      ", delHint: " + delHints;
115  }
116}