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 */
018package org.apache.hadoop.hbase.master.procedure;
019
020import org.apache.commons.lang3.builder.ToStringBuilder;
021import org.apache.commons.lang3.builder.ToStringStyle;
022import org.apache.hadoop.hbase.master.procedure.PeerProcedureInterface.PeerOperationType;
023import org.apache.hadoop.hbase.procedure2.LockStatus;
024import org.apache.hadoop.hbase.procedure2.Procedure;
025import org.apache.yetus.audience.InterfaceAudience;
026
027@InterfaceAudience.Private
028class PeerQueue extends Queue<String> {
029
030  public PeerQueue(String peerId, LockStatus lockStatus) {
031    super(peerId, lockStatus);
032  }
033
034  @Override
035  public boolean requireExclusiveLock(Procedure<?> proc) {
036    return requirePeerExclusiveLock((PeerProcedureInterface) proc);
037  }
038
039  private static boolean requirePeerExclusiveLock(PeerProcedureInterface proc) {
040    // These procedures will only be used as sub procedures, and if they are scheduled, it always
041    // means that the root procedure holds the xlock, so we do not need to hold any locks.
042    return proc.getPeerOperationType() != PeerOperationType.REFRESH
043      && proc.getPeerOperationType() != PeerOperationType.RECOVER_STANDBY
044      && proc.getPeerOperationType() != PeerOperationType.SYNC_REPLICATION_REPLAY_WAL
045      && proc.getPeerOperationType() != PeerOperationType.SYNC_REPLICATION_REPLAY_WAL_REMOTE;
046  }
047
048  @Override
049  public String toString() {
050    return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE).appendSuper(super.toString())
051      .build();
052  }
053}