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.hbase.master.cleaner;
020
021import java.io.IOException;
022import java.util.List;
023import java.util.Map;
024
025import org.apache.hadoop.hbase.ScheduledChore;
026import org.apache.hadoop.hbase.Stoppable;
027import org.apache.yetus.audience.InterfaceAudience;
028import org.slf4j.Logger;
029import org.slf4j.LoggerFactory;
030
031/**
032 * Chore that will clean the replication queues belonging to the peer which does not exist.
033 */
034@InterfaceAudience.Private
035public class ReplicationZKNodeCleanerChore extends ScheduledChore {
036  private static final Logger LOG = LoggerFactory.getLogger(ReplicationZKNodeCleanerChore.class);
037  private final ReplicationZKNodeCleaner cleaner;
038
039  public ReplicationZKNodeCleanerChore(Stoppable stopper, int period,
040      ReplicationZKNodeCleaner cleaner) {
041    super("ReplicationZKNodeCleanerChore", stopper, period);
042    this.cleaner = cleaner;
043  }
044
045  @Override
046  protected void chore() {
047    try {
048      Map<String, List<String>> undeletedQueues = cleaner.getUnDeletedQueues();
049      cleaner.removeQueues(undeletedQueues);
050    } catch (IOException e) {
051      LOG.warn("Failed to clean replication zk node", e);
052    }
053  }
054
055}