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.yetus.audience.InterfaceAudience; 021 022@InterfaceAudience.Private 023public class SwapRegionsAction extends BalanceAction { 024 private final int fromServer; 025 private final int fromRegion; 026 private final int toServer; 027 private final int toRegion; 028 029 SwapRegionsAction(int fromServer, int fromRegion, int toServer, int toRegion) { 030 super(Type.SWAP_REGIONS); 031 this.fromServer = fromServer; 032 this.fromRegion = fromRegion; 033 this.toServer = toServer; 034 this.toRegion = toRegion; 035 } 036 037 public int getFromServer() { 038 return fromServer; 039 } 040 041 public int getFromRegion() { 042 return fromRegion; 043 } 044 045 public int getToServer() { 046 return toServer; 047 } 048 049 public int getToRegion() { 050 return toRegion; 051 } 052 053 @Override 054 public BalanceAction undoAction() { 055 return new SwapRegionsAction(fromServer, toRegion, toServer, fromRegion); 056 } 057 058 @Override 059 public String toString() { 060 return getType() + ": " + fromRegion + ":" + fromServer + " <-> " + toRegion + ":" + toServer; 061 } 062}