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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> *<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.3"></a>
<span class="sourceLineNo">004</span> * or more contributor license agreements. See the NOTICE file<a name="line.4"></a>
<span class="sourceLineNo">005</span> * distributed with this work for additional information<a name="line.5"></a>
<span class="sourceLineNo">006</span> * regarding copyright ownership. The ASF licenses this file<a name="line.6"></a>
<span class="sourceLineNo">007</span> * to you under the Apache License, Version 2.0 (the<a name="line.7"></a>
<span class="sourceLineNo">008</span> * "License"); you may not use this file except in compliance<a name="line.8"></a>
<span class="sourceLineNo">009</span> * with the License. You may obtain a copy of the License at<a name="line.9"></a>
<span class="sourceLineNo">010</span> *<a name="line.10"></a>
<span class="sourceLineNo">011</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.11"></a>
<span class="sourceLineNo">012</span> *<a name="line.12"></a>
<span class="sourceLineNo">013</span> * Unless required by applicable law or agreed to in writing, software<a name="line.13"></a>
<span class="sourceLineNo">014</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.14"></a>
<span class="sourceLineNo">015</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.15"></a>
<span class="sourceLineNo">016</span> * See the License for the specific language governing permissions and<a name="line.16"></a>
<span class="sourceLineNo">017</span> * limitations under the License.<a name="line.17"></a>
<span class="sourceLineNo">018</span> */<a name="line.18"></a>
<span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.replication;<a name="line.19"></a>
<span class="sourceLineNo">020</span><a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.util.ArrayList;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.util.Collections;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import java.util.List;<a name="line.23"></a>
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.ServerName;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import org.slf4j.Logger;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import org.slf4j.LoggerFactory;<a name="line.28"></a>
<span class="sourceLineNo">029</span><a name="line.29"></a>
<span class="sourceLineNo">030</span>/**<a name="line.30"></a>
<span class="sourceLineNo">031</span> * This class is responsible for the parsing logic for a queue id representing a queue.<a name="line.31"></a>
<span class="sourceLineNo">032</span> * It will extract the peerId if it's recovered as well as the dead region servers<a name="line.32"></a>
<span class="sourceLineNo">033</span> * that were part of the queue's history.<a name="line.33"></a>
<span class="sourceLineNo">034</span> */<a name="line.34"></a>
<span class="sourceLineNo">035</span>@InterfaceAudience.Private<a name="line.35"></a>
<span class="sourceLineNo">036</span>public class ReplicationQueueInfo {<a name="line.36"></a>
<span class="sourceLineNo">037</span> private static final Logger LOG = LoggerFactory.getLogger(ReplicationQueueInfo.class);<a name="line.37"></a>
<span class="sourceLineNo">038</span><a name="line.38"></a>
<span class="sourceLineNo">039</span> private final String peerId;<a name="line.39"></a>
<span class="sourceLineNo">040</span> private final String queueId;<a name="line.40"></a>
<span class="sourceLineNo">041</span> private boolean queueRecovered;<a name="line.41"></a>
<span class="sourceLineNo">042</span> // List of all the dead region servers that had this queue (if recovered)<a name="line.42"></a>
<span class="sourceLineNo">043</span> private List&lt;ServerName&gt; deadRegionServers = new ArrayList&lt;&gt;();<a name="line.43"></a>
<span class="sourceLineNo">044</span><a name="line.44"></a>
<span class="sourceLineNo">045</span> /**<a name="line.45"></a>
<span class="sourceLineNo">046</span> * The passed queueId will be either the id of the peer or the handling story of that queue<a name="line.46"></a>
<span class="sourceLineNo">047</span> * in the form of id-servername-*<a name="line.47"></a>
<span class="sourceLineNo">048</span> */<a name="line.48"></a>
<span class="sourceLineNo">049</span> public ReplicationQueueInfo(String queueId) {<a name="line.49"></a>
<span class="sourceLineNo">050</span> this.queueId = queueId;<a name="line.50"></a>
<span class="sourceLineNo">051</span> String[] parts = queueId.split("-", 2);<a name="line.51"></a>
<span class="sourceLineNo">052</span> this.queueRecovered = parts.length != 1;<a name="line.52"></a>
<span class="sourceLineNo">053</span> this.peerId = this.queueRecovered ? parts[0] : queueId;<a name="line.53"></a>
<span class="sourceLineNo">054</span> if (parts.length &gt;= 2) {<a name="line.54"></a>
<span class="sourceLineNo">055</span> // extract dead servers<a name="line.55"></a>
<span class="sourceLineNo">056</span> extractDeadServersFromZNodeString(parts[1], this.deadRegionServers);<a name="line.56"></a>
<span class="sourceLineNo">057</span> }<a name="line.57"></a>
<span class="sourceLineNo">058</span> }<a name="line.58"></a>
<span class="sourceLineNo">059</span><a name="line.59"></a>
<span class="sourceLineNo">060</span> /**<a name="line.60"></a>
<span class="sourceLineNo">061</span> * Parse dead server names from queue id. servername can contain "-" such as<a name="line.61"></a>
<span class="sourceLineNo">062</span> * "ip-10-46-221-101.ec2.internal", so we need skip some "-" during parsing for the following<a name="line.62"></a>
<span class="sourceLineNo">063</span> * cases: 2-ip-10-46-221-101.ec2.internal,52170,1364333181125-&amp;lt;server name&gt;-...<a name="line.63"></a>
<span class="sourceLineNo">064</span> */<a name="line.64"></a>
<span class="sourceLineNo">065</span> private static void<a name="line.65"></a>
<span class="sourceLineNo">066</span> extractDeadServersFromZNodeString(String deadServerListStr, List&lt;ServerName&gt; result) {<a name="line.66"></a>
<span class="sourceLineNo">067</span> if(deadServerListStr == null || result == null || deadServerListStr.isEmpty()) {<a name="line.67"></a>
<span class="sourceLineNo">068</span> return;<a name="line.68"></a>
<span class="sourceLineNo">069</span> }<a name="line.69"></a>
<span class="sourceLineNo">070</span><a name="line.70"></a>
<span class="sourceLineNo">071</span> // valid server name delimiter "-" has to be after "," in a server name<a name="line.71"></a>
<span class="sourceLineNo">072</span> int seenCommaCnt = 0;<a name="line.72"></a>
<span class="sourceLineNo">073</span> int startIndex = 0;<a name="line.73"></a>
<span class="sourceLineNo">074</span> int len = deadServerListStr.length();<a name="line.74"></a>
<span class="sourceLineNo">075</span><a name="line.75"></a>
<span class="sourceLineNo">076</span> for (int i = 0; i &lt; len; i++) {<a name="line.76"></a>
<span class="sourceLineNo">077</span> switch (deadServerListStr.charAt(i)) {<a name="line.77"></a>
<span class="sourceLineNo">078</span> case ',':<a name="line.78"></a>
<span class="sourceLineNo">079</span> seenCommaCnt += 1;<a name="line.79"></a>
<span class="sourceLineNo">080</span> break;<a name="line.80"></a>
<span class="sourceLineNo">081</span> case '-':<a name="line.81"></a>
<span class="sourceLineNo">082</span> if(seenCommaCnt&gt;=2) {<a name="line.82"></a>
<span class="sourceLineNo">083</span> if (i &gt; startIndex) {<a name="line.83"></a>
<span class="sourceLineNo">084</span> String serverName = deadServerListStr.substring(startIndex, i);<a name="line.84"></a>
<span class="sourceLineNo">085</span> if(ServerName.isFullServerName(serverName)){<a name="line.85"></a>
<span class="sourceLineNo">086</span> result.add(ServerName.valueOf(serverName));<a name="line.86"></a>
<span class="sourceLineNo">087</span> } else {<a name="line.87"></a>
<span class="sourceLineNo">088</span> LOG.error("Found invalid server name:" + serverName);<a name="line.88"></a>
<span class="sourceLineNo">089</span> }<a name="line.89"></a>
<span class="sourceLineNo">090</span> startIndex = i + 1;<a name="line.90"></a>
<span class="sourceLineNo">091</span> }<a name="line.91"></a>
<span class="sourceLineNo">092</span> seenCommaCnt = 0;<a name="line.92"></a>
<span class="sourceLineNo">093</span> }<a name="line.93"></a>
<span class="sourceLineNo">094</span> break;<a name="line.94"></a>
<span class="sourceLineNo">095</span> default:<a name="line.95"></a>
<span class="sourceLineNo">096</span> break;<a name="line.96"></a>
<span class="sourceLineNo">097</span> }<a name="line.97"></a>
<span class="sourceLineNo">098</span> }<a name="line.98"></a>
<span class="sourceLineNo">099</span><a name="line.99"></a>
<span class="sourceLineNo">100</span> // add tail<a name="line.100"></a>
<span class="sourceLineNo">101</span> if(startIndex &lt; len - 1){<a name="line.101"></a>
<span class="sourceLineNo">102</span> String serverName = deadServerListStr.substring(startIndex, len);<a name="line.102"></a>
<span class="sourceLineNo">103</span> if(ServerName.isFullServerName(serverName)){<a name="line.103"></a>
<span class="sourceLineNo">104</span> result.add(ServerName.valueOf(serverName));<a name="line.104"></a>
<span class="sourceLineNo">105</span> } else {<a name="line.105"></a>
<span class="sourceLineNo">106</span> LOG.error("Found invalid server name at the end:" + serverName);<a name="line.106"></a>
<span class="sourceLineNo">107</span> }<a name="line.107"></a>
<span class="sourceLineNo">108</span> }<a name="line.108"></a>
<span class="sourceLineNo">109</span><a name="line.109"></a>
<span class="sourceLineNo">110</span> LOG.debug("Found dead servers:" + result);<a name="line.110"></a>
<span class="sourceLineNo">111</span> }<a name="line.111"></a>
<span class="sourceLineNo">112</span><a name="line.112"></a>
<span class="sourceLineNo">113</span> public List&lt;ServerName&gt; getDeadRegionServers() {<a name="line.113"></a>
<span class="sourceLineNo">114</span> return Collections.unmodifiableList(this.deadRegionServers);<a name="line.114"></a>
<span class="sourceLineNo">115</span> }<a name="line.115"></a>
<span class="sourceLineNo">116</span><a name="line.116"></a>
<span class="sourceLineNo">117</span> public String getPeerId() {<a name="line.117"></a>
<span class="sourceLineNo">118</span> return this.peerId;<a name="line.118"></a>
<span class="sourceLineNo">119</span> }<a name="line.119"></a>
<span class="sourceLineNo">120</span><a name="line.120"></a>
<span class="sourceLineNo">121</span> public String getQueueId() {<a name="line.121"></a>
<span class="sourceLineNo">122</span> return this.queueId;<a name="line.122"></a>
<span class="sourceLineNo">123</span> }<a name="line.123"></a>
<span class="sourceLineNo">124</span><a name="line.124"></a>
<span class="sourceLineNo">125</span> public boolean isQueueRecovered() {<a name="line.125"></a>
<span class="sourceLineNo">126</span> return queueRecovered;<a name="line.126"></a>
<span class="sourceLineNo">127</span> }<a name="line.127"></a>
<span class="sourceLineNo">128</span>}<a name="line.128"></a>
</pre>
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