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.balancer;
019
020import org.apache.hadoop.hbase.HConstants;
021import org.apache.yetus.audience.InterfaceAudience;
022
023@InterfaceAudience.Private
024class AssignRegionAction extends BalanceAction {
025  private final int region;
026  private final int server;
027
028  public AssignRegionAction(int region, int server) {
029    super(Type.ASSIGN_REGION);
030    this.region = region;
031    this.server = server;
032  }
033
034  public int getRegion() {
035    return region;
036  }
037
038  public int getServer() {
039    return server;
040  }
041
042  @Override
043  public BalanceAction undoAction() {
044    // TODO implement this. This action is not being used by the StochasticLB for now
045    // in case it uses it, we should implement this function.
046    throw new UnsupportedOperationException(HConstants.NOT_IMPLEMENTED);
047  }
048
049  @Override
050  public String toString() {
051    return getType() + ": " + region + ":" + server;
052  }
053}