| /** |
| * |
| * 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.hbase; |
| |
| import org.apache.hadoop.hbase.client.RegionInfo; |
| import org.apache.hadoop.hbase.util.Addressing; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| /** |
| * Data structure to hold RegionInfo and the address for the hosting |
| * HRegionServer. Immutable. Comparable, but we compare the 'location' only: |
| * i.e. the hostname and port, and *not* the regioninfo. This means two |
| * instances are the same if they refer to the same 'location' (the same |
| * hostname and port), though they may be carrying different regions. |
| * |
| * On a big cluster, each client will have thousands of instances of this object, often |
| * 100 000 of them if not million. It's important to keep the object size as small |
| * as possible. |
| * |
| * <br>This interface has been marked InterfaceAudience.Public in 0.96 and 0.98. |
| */ |
| @InterfaceAudience.Public |
| public class HRegionLocation implements Comparable<HRegionLocation> { |
| private final RegionInfo regionInfo; |
| private final ServerName serverName; |
| private final long seqNum; |
| |
| public HRegionLocation(RegionInfo regionInfo, ServerName serverName) { |
| this(regionInfo, serverName, HConstants.NO_SEQNUM); |
| } |
| |
| public HRegionLocation(RegionInfo regionInfo, ServerName serverName, long seqNum) { |
| this.regionInfo = regionInfo; |
| this.serverName = serverName; |
| this.seqNum = seqNum; |
| } |
| |
| /** |
| * @see java.lang.Object#toString() |
| */ |
| @Override |
| public String toString() { |
| return "region=" + (this.regionInfo == null ? "null" : this.regionInfo.getRegionNameAsString()) |
| + ", hostname=" + this.serverName + ", seqNum=" + seqNum; |
| } |
| |
| /** |
| * @see java.lang.Object#equals(java.lang.Object) |
| */ |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null) { |
| return false; |
| } |
| if (!(o instanceof HRegionLocation)) { |
| return false; |
| } |
| return this.compareTo((HRegionLocation)o) == 0; |
| } |
| |
| /** |
| * @see java.lang.Object#hashCode() |
| */ |
| @Override |
| public int hashCode() { |
| return this.serverName.hashCode(); |
| } |
| |
| /** |
| * @return regionInfo |
| */ |
| public RegionInfo getRegion(){ |
| return regionInfo; |
| } |
| |
| public String getHostname() { |
| return this.serverName.getHostname(); |
| } |
| |
| public int getPort() { |
| return this.serverName.getPort(); |
| } |
| |
| public long getSeqNum() { |
| return seqNum; |
| } |
| |
| /** |
| * @return String made of hostname and port formatted as |
| * per {@link Addressing#createHostAndPortStr(String, int)} |
| */ |
| public String getHostnamePort() { |
| return Addressing.createHostAndPortStr(this.getHostname(), this.getPort()); |
| } |
| |
| public ServerName getServerName() { |
| return serverName; |
| } |
| |
| @Override |
| public int compareTo(HRegionLocation o) { |
| return serverName.compareTo(o.getServerName()); |
| } |
| } |