| /** |
| * Copyright 2007 The Apache Software Foundation |
| * |
| * 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.util.Addressing; |
| |
| /** |
| * Data structure to hold HRegionInfo 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. |
| */ |
| public class HRegionLocation implements Comparable<HRegionLocation> { |
| private final HRegionInfo regionInfo; |
| private final String hostname; |
| private final int port; |
| // Cache of the 'toString' result. |
| private String cachedString = null; |
| // Cache of the hostname + port |
| private String cachedHostnamePort; |
| |
| /** |
| * Constructor |
| * @param regionInfo the HRegionInfo for the region |
| * @param hostname Hostname |
| * @param port port |
| */ |
| public HRegionLocation(HRegionInfo regionInfo, final String hostname, |
| final int port) { |
| this.regionInfo = regionInfo; |
| this.hostname = hostname; |
| this.port = port; |
| } |
| |
| /** |
| * @see java.lang.Object#toString() |
| */ |
| @Override |
| public synchronized String toString() { |
| if (this.cachedString == null) { |
| this.cachedString = "region=" + this.regionInfo.getRegionNameAsString() + |
| ", hostname=" + this.hostname + ", port=" + this.port; |
| } |
| return this.cachedString; |
| } |
| |
| /** |
| * @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() { |
| int result = this.hostname.hashCode(); |
| result ^= this.port; |
| return result; |
| } |
| |
| /** @return HRegionInfo */ |
| public HRegionInfo getRegionInfo(){ |
| return regionInfo; |
| } |
| |
| /** |
| * Do not use!!! Creates a HServerAddress instance which will do a resolve. |
| * @return HServerAddress |
| * @deprecated Use {@link #getHostnamePort} |
| */ |
| public HServerAddress getServerAddress() { |
| return new HServerAddress(this.hostname, this.port); |
| } |
| |
| public String getHostname() { |
| return this.hostname; |
| } |
| |
| public int getPort() { |
| return this.port; |
| } |
| |
| /** |
| * @return String made of hostname and port formatted as per {@link Addressing#createHostAndPortStr(String, int)} |
| */ |
| public synchronized String getHostnamePort() { |
| if (this.cachedHostnamePort == null) { |
| this.cachedHostnamePort = |
| Addressing.createHostAndPortStr(this.hostname, this.port); |
| } |
| return this.cachedHostnamePort; |
| } |
| |
| // |
| // Comparable |
| // |
| |
| public int compareTo(HRegionLocation o) { |
| int result = this.hostname.compareTo(o.getHostname()); |
| if (result != 0) return result; |
| return this.port - o.getPort(); |
| } |
| } |