org.apache.hadoop.hdfs.server.protocol.ReceivedDeletedBlockInfo.java Source code

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Here is the source code for org.apache.hadoop.hdfs.server.protocol.ReceivedDeletedBlockInfo.java

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/**
 * 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.hdfs.server.protocol;

import org.apache.hadoop.hdfs.protocol.Block;

/**
 * A data structure to store the blocks in an incremental block report. 
 */
public class ReceivedDeletedBlockInfo {
    Block block;
    BlockStatus status;
    String delHints;

    public enum BlockStatus {
        RECEIVING_BLOCK(1), RECEIVED_BLOCK(2), DELETED_BLOCK(3);

        private final int code;

        BlockStatus(int code) {
            this.code = code;
        }

        public int getCode() {
            return code;
        }

        public static BlockStatus fromCode(int code) {
            for (BlockStatus bs : BlockStatus.values()) {
                if (bs.code == code) {
                    return bs;
                }
            }
            return null;
        }
    }

    public ReceivedDeletedBlockInfo() {
    }

    public ReceivedDeletedBlockInfo(Block blk, BlockStatus status, String delHints) {
        this.block = blk;
        this.status = status;
        this.delHints = delHints;
    }

    public Block getBlock() {
        return this.block;
    }

    public void setBlock(Block blk) {
        this.block = blk;
    }

    public String getDelHints() {
        return this.delHints;
    }

    public void setDelHints(String hints) {
        this.delHints = hints;
    }

    public BlockStatus getStatus() {
        return status;
    }

    @Override
    public boolean equals(Object o) {
        if (!(o instanceof ReceivedDeletedBlockInfo)) {
            return false;
        }
        ReceivedDeletedBlockInfo other = (ReceivedDeletedBlockInfo) o;
        return this.block.equals(other.getBlock()) && this.status == other.status && this.delHints != null
                && this.delHints.equals(other.delHints);
    }

    @Override
    public int hashCode() {
        assert false : "hashCode not designed";
        return 0;
    }

    public boolean blockEquals(Block b) {
        return this.block.equals(b);
    }

    public boolean isDeletedBlock() {
        return status == BlockStatus.DELETED_BLOCK;
    }

    @Override
    public String toString() {
        return block.toString() + ", status: " + status + ", delHint: " + delHints;
    }
}