blob: 3abd2a9fac41fbbe09c4766e34758e6cbaee03fd [file] [log] [blame]
<!DOCTYPE HTML>
<html lang="en">
<head>
<!-- Generated by javadoc (17) -->
<title>Source code</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="description" content="source: package: org.apache.hadoop.hbase, class: ClusterId">
<meta name="generator" content="javadoc/SourceToHTMLConverter">
<link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style">
</head>
<body class="source-page">
<main role="main">
<div class="source-container">
<pre><span class="source-line-no">001</span><span id="line-1">/*</span>
<span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span>
<span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span>
<span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span>
<span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span>
<span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span>
<span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span>
<span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span>
<span class="source-line-no">009</span><span id="line-9"> *</span>
<span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span>
<span class="source-line-no">011</span><span id="line-11"> *</span>
<span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span>
<span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span>
<span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
<span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span>
<span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span>
<span class="source-line-no">017</span><span id="line-17"> */</span>
<span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase;</span>
<span class="source-line-no">019</span><span id="line-19"></span>
<span class="source-line-no">020</span><span id="line-20">import java.io.IOException;</span>
<span class="source-line-no">021</span><span id="line-21">import java.util.UUID;</span>
<span class="source-line-no">022</span><span id="line-22">import org.apache.hadoop.hbase.exceptions.DeserializationException;</span>
<span class="source-line-no">023</span><span id="line-23">import org.apache.hadoop.hbase.util.Bytes;</span>
<span class="source-line-no">024</span><span id="line-24">import org.apache.yetus.audience.InterfaceAudience;</span>
<span class="source-line-no">025</span><span id="line-25"></span>
<span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;</span>
<span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.shaded.protobuf.generated.ClusterIdProtos;</span>
<span class="source-line-no">028</span><span id="line-28"></span>
<span class="source-line-no">029</span><span id="line-29">/**</span>
<span class="source-line-no">030</span><span id="line-30"> * The identifier for this cluster. It is serialized to the filesystem and up into zookeeper. This</span>
<span class="source-line-no">031</span><span id="line-31"> * is a container for the id. Also knows how to serialize and deserialize the cluster id.</span>
<span class="source-line-no">032</span><span id="line-32"> */</span>
<span class="source-line-no">033</span><span id="line-33">@InterfaceAudience.Private</span>
<span class="source-line-no">034</span><span id="line-34">public class ClusterId {</span>
<span class="source-line-no">035</span><span id="line-35"> private final String id;</span>
<span class="source-line-no">036</span><span id="line-36"></span>
<span class="source-line-no">037</span><span id="line-37"> /**</span>
<span class="source-line-no">038</span><span id="line-38"> * New ClusterID. Generates a uniqueid.</span>
<span class="source-line-no">039</span><span id="line-39"> */</span>
<span class="source-line-no">040</span><span id="line-40"> public ClusterId() {</span>
<span class="source-line-no">041</span><span id="line-41"> this(UUID.randomUUID().toString());</span>
<span class="source-line-no">042</span><span id="line-42"> }</span>
<span class="source-line-no">043</span><span id="line-43"></span>
<span class="source-line-no">044</span><span id="line-44"> public ClusterId(final String uuid) {</span>
<span class="source-line-no">045</span><span id="line-45"> this.id = uuid;</span>
<span class="source-line-no">046</span><span id="line-46"> }</span>
<span class="source-line-no">047</span><span id="line-47"></span>
<span class="source-line-no">048</span><span id="line-48"> /** Returns The clusterid serialized using pb w/ pb magic prefix */</span>
<span class="source-line-no">049</span><span id="line-49"> public byte[] toByteArray() {</span>
<span class="source-line-no">050</span><span id="line-50"> return ProtobufUtil.prependPBMagic(convert().toByteArray());</span>
<span class="source-line-no">051</span><span id="line-51"> }</span>
<span class="source-line-no">052</span><span id="line-52"></span>
<span class="source-line-no">053</span><span id="line-53"> /**</span>
<span class="source-line-no">054</span><span id="line-54"> * Parse the serialized representation of the {@link ClusterId}</span>
<span class="source-line-no">055</span><span id="line-55"> * @param bytes A pb serialized {@link ClusterId} instance with pb magic prefix</span>
<span class="source-line-no">056</span><span id="line-56"> * @return An instance of {@link ClusterId} made from &lt;code&gt;bytes&lt;/code&gt;</span>
<span class="source-line-no">057</span><span id="line-57"> * @see #toByteArray()</span>
<span class="source-line-no">058</span><span id="line-58"> */</span>
<span class="source-line-no">059</span><span id="line-59"> public static ClusterId parseFrom(final byte[] bytes) throws DeserializationException {</span>
<span class="source-line-no">060</span><span id="line-60"> if (ProtobufUtil.isPBMagicPrefix(bytes)) {</span>
<span class="source-line-no">061</span><span id="line-61"> int pblen = ProtobufUtil.lengthOfPBMagic();</span>
<span class="source-line-no">062</span><span id="line-62"> ClusterIdProtos.ClusterId.Builder builder = ClusterIdProtos.ClusterId.newBuilder();</span>
<span class="source-line-no">063</span><span id="line-63"> ClusterIdProtos.ClusterId cid = null;</span>
<span class="source-line-no">064</span><span id="line-64"> try {</span>
<span class="source-line-no">065</span><span id="line-65"> ProtobufUtil.mergeFrom(builder, bytes, pblen, bytes.length - pblen);</span>
<span class="source-line-no">066</span><span id="line-66"> cid = builder.build();</span>
<span class="source-line-no">067</span><span id="line-67"> } catch (IOException e) {</span>
<span class="source-line-no">068</span><span id="line-68"> throw new DeserializationException(e);</span>
<span class="source-line-no">069</span><span id="line-69"> }</span>
<span class="source-line-no">070</span><span id="line-70"> return convert(cid);</span>
<span class="source-line-no">071</span><span id="line-71"> } else {</span>
<span class="source-line-no">072</span><span id="line-72"> // Presume it was written out this way, the old way.</span>
<span class="source-line-no">073</span><span id="line-73"> return new ClusterId(Bytes.toString(bytes));</span>
<span class="source-line-no">074</span><span id="line-74"> }</span>
<span class="source-line-no">075</span><span id="line-75"> }</span>
<span class="source-line-no">076</span><span id="line-76"></span>
<span class="source-line-no">077</span><span id="line-77"> /** Returns A pb instance to represent this instance. */</span>
<span class="source-line-no">078</span><span id="line-78"> public ClusterIdProtos.ClusterId convert() {</span>
<span class="source-line-no">079</span><span id="line-79"> ClusterIdProtos.ClusterId.Builder builder = ClusterIdProtos.ClusterId.newBuilder();</span>
<span class="source-line-no">080</span><span id="line-80"> return builder.setClusterId(this.id).build();</span>
<span class="source-line-no">081</span><span id="line-81"> }</span>
<span class="source-line-no">082</span><span id="line-82"></span>
<span class="source-line-no">083</span><span id="line-83"> /** Returns A {@link ClusterId} made from the passed in &lt;code&gt;cid&lt;/code&gt; */</span>
<span class="source-line-no">084</span><span id="line-84"> public static ClusterId convert(final ClusterIdProtos.ClusterId cid) {</span>
<span class="source-line-no">085</span><span id="line-85"> return new ClusterId(cid.getClusterId());</span>
<span class="source-line-no">086</span><span id="line-86"> }</span>
<span class="source-line-no">087</span><span id="line-87"></span>
<span class="source-line-no">088</span><span id="line-88"> /**</span>
<span class="source-line-no">089</span><span id="line-89"> * @see java.lang.Object#toString()</span>
<span class="source-line-no">090</span><span id="line-90"> */</span>
<span class="source-line-no">091</span><span id="line-91"> @Override</span>
<span class="source-line-no">092</span><span id="line-92"> public String toString() {</span>
<span class="source-line-no">093</span><span id="line-93"> return this.id;</span>
<span class="source-line-no">094</span><span id="line-94"> }</span>
<span class="source-line-no">095</span><span id="line-95">}</span>
</pre>
</div>
</main>
</body>
</html>