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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a>
<span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a>
<span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a>
<span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a>
<span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a>
<span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a>
<span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
<span class="sourceLineNo">011</span> *<a name="line.11"></a>
<span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing, software<a name="line.12"></a>
<span class="sourceLineNo">013</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.13"></a>
<span class="sourceLineNo">014</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.14"></a>
<span class="sourceLineNo">015</span> * See the License for the specific language governing permissions and<a name="line.15"></a>
<span class="sourceLineNo">016</span> * limitations under the License.<a name="line.16"></a>
<span class="sourceLineNo">017</span> */<a name="line.17"></a>
<span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.zookeeper;<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>import static org.apache.zookeeper.client.FourLetterWordMain.send4LetterWord;<a name="line.20"></a>
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.io.File;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import java.io.IOException;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.io.InterruptedIOException;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.io.PrintWriter;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import java.io.StringWriter;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import java.net.BindException;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import java.net.ConnectException;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import java.net.InetAddress;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import java.net.InetSocketAddress;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import java.util.ArrayList;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import java.util.List;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import java.util.concurrent.ThreadLocalRandom;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.apache.hadoop.conf.Configuration;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.HConstants;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.net.Address;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.40"></a>
<span class="sourceLineNo">041</span>import org.apache.zookeeper.common.X509Exception;<a name="line.41"></a>
<span class="sourceLineNo">042</span>import org.apache.zookeeper.server.NIOServerCnxnFactory;<a name="line.42"></a>
<span class="sourceLineNo">043</span>import org.apache.zookeeper.server.ZooKeeperServer;<a name="line.43"></a>
<span class="sourceLineNo">044</span>import org.apache.zookeeper.server.persistence.FileTxnLog;<a name="line.44"></a>
<span class="sourceLineNo">045</span>import org.slf4j.Logger;<a name="line.45"></a>
<span class="sourceLineNo">046</span>import org.slf4j.LoggerFactory;<a name="line.46"></a>
<span class="sourceLineNo">047</span><a name="line.47"></a>
<span class="sourceLineNo">048</span>/**<a name="line.48"></a>
<span class="sourceLineNo">049</span> * TODO: Most of the code in this class is ripped from ZooKeeper tests. Instead of redoing it, we<a name="line.49"></a>
<span class="sourceLineNo">050</span> * should contribute updates to their code which let us more easily access testing helper objects.<a name="line.50"></a>
<span class="sourceLineNo">051</span> */<a name="line.51"></a>
<span class="sourceLineNo">052</span>@InterfaceAudience.Public<a name="line.52"></a>
<span class="sourceLineNo">053</span>public class MiniZooKeeperCluster {<a name="line.53"></a>
<span class="sourceLineNo">054</span> private static final Logger LOG = LoggerFactory.getLogger(MiniZooKeeperCluster.class);<a name="line.54"></a>
<span class="sourceLineNo">055</span> private static final int TICK_TIME = 2000;<a name="line.55"></a>
<span class="sourceLineNo">056</span> private static final int TIMEOUT = 1000;<a name="line.56"></a>
<span class="sourceLineNo">057</span> private static final int DEFAULT_CONNECTION_TIMEOUT = 30000;<a name="line.57"></a>
<span class="sourceLineNo">058</span> private static final byte[] STATIC_BYTES = Bytes.toBytes("stat");<a name="line.58"></a>
<span class="sourceLineNo">059</span> private final int connectionTimeout;<a name="line.59"></a>
<span class="sourceLineNo">060</span> public static final String LOOPBACK_HOST = InetAddress.getLoopbackAddress().getHostName();<a name="line.60"></a>
<span class="sourceLineNo">061</span> public static final String HOST = LOOPBACK_HOST;<a name="line.61"></a>
<span class="sourceLineNo">062</span><a name="line.62"></a>
<span class="sourceLineNo">063</span> private boolean started;<a name="line.63"></a>
<span class="sourceLineNo">064</span><a name="line.64"></a>
<span class="sourceLineNo">065</span> /**<a name="line.65"></a>
<span class="sourceLineNo">066</span> * The default port. If zero, we use a random port.<a name="line.66"></a>
<span class="sourceLineNo">067</span> */<a name="line.67"></a>
<span class="sourceLineNo">068</span> private int defaultClientPort = 0;<a name="line.68"></a>
<span class="sourceLineNo">069</span><a name="line.69"></a>
<span class="sourceLineNo">070</span> private final List&lt;NIOServerCnxnFactory&gt; standaloneServerFactoryList;<a name="line.70"></a>
<span class="sourceLineNo">071</span> private final List&lt;ZooKeeperServer&gt; zooKeeperServers;<a name="line.71"></a>
<span class="sourceLineNo">072</span> private final List&lt;Integer&gt; clientPortList;<a name="line.72"></a>
<span class="sourceLineNo">073</span><a name="line.73"></a>
<span class="sourceLineNo">074</span> private int activeZKServerIndex;<a name="line.74"></a>
<span class="sourceLineNo">075</span> private int tickTime = 0;<a name="line.75"></a>
<span class="sourceLineNo">076</span><a name="line.76"></a>
<span class="sourceLineNo">077</span> private final Configuration configuration;<a name="line.77"></a>
<span class="sourceLineNo">078</span><a name="line.78"></a>
<span class="sourceLineNo">079</span> public MiniZooKeeperCluster() {<a name="line.79"></a>
<span class="sourceLineNo">080</span> this(new Configuration());<a name="line.80"></a>
<span class="sourceLineNo">081</span> }<a name="line.81"></a>
<span class="sourceLineNo">082</span><a name="line.82"></a>
<span class="sourceLineNo">083</span> public MiniZooKeeperCluster(Configuration configuration) {<a name="line.83"></a>
<span class="sourceLineNo">084</span> this.started = false;<a name="line.84"></a>
<span class="sourceLineNo">085</span> this.configuration = configuration;<a name="line.85"></a>
<span class="sourceLineNo">086</span> activeZKServerIndex = -1;<a name="line.86"></a>
<span class="sourceLineNo">087</span> zooKeeperServers = new ArrayList&lt;&gt;();<a name="line.87"></a>
<span class="sourceLineNo">088</span> clientPortList = new ArrayList&lt;&gt;();<a name="line.88"></a>
<span class="sourceLineNo">089</span> standaloneServerFactoryList = new ArrayList&lt;&gt;();<a name="line.89"></a>
<span class="sourceLineNo">090</span> connectionTimeout = configuration.getInt(HConstants.ZK_SESSION_TIMEOUT + ".localHBaseCluster",<a name="line.90"></a>
<span class="sourceLineNo">091</span> DEFAULT_CONNECTION_TIMEOUT);<a name="line.91"></a>
<span class="sourceLineNo">092</span> }<a name="line.92"></a>
<span class="sourceLineNo">093</span><a name="line.93"></a>
<span class="sourceLineNo">094</span> /**<a name="line.94"></a>
<span class="sourceLineNo">095</span> * Add a client port to the list.<a name="line.95"></a>
<span class="sourceLineNo">096</span> * @param clientPort the specified port<a name="line.96"></a>
<span class="sourceLineNo">097</span> */<a name="line.97"></a>
<span class="sourceLineNo">098</span> public void addClientPort(int clientPort) {<a name="line.98"></a>
<span class="sourceLineNo">099</span> clientPortList.add(clientPort);<a name="line.99"></a>
<span class="sourceLineNo">100</span> }<a name="line.100"></a>
<span class="sourceLineNo">101</span><a name="line.101"></a>
<span class="sourceLineNo">102</span> /**<a name="line.102"></a>
<span class="sourceLineNo">103</span> * Get the list of client ports.<a name="line.103"></a>
<span class="sourceLineNo">104</span> * @return clientPortList the client port list<a name="line.104"></a>
<span class="sourceLineNo">105</span> */<a name="line.105"></a>
<span class="sourceLineNo">106</span> @InterfaceAudience.Private<a name="line.106"></a>
<span class="sourceLineNo">107</span> public List&lt;Integer&gt; getClientPortList() {<a name="line.107"></a>
<span class="sourceLineNo">108</span> return clientPortList;<a name="line.108"></a>
<span class="sourceLineNo">109</span> }<a name="line.109"></a>
<span class="sourceLineNo">110</span><a name="line.110"></a>
<span class="sourceLineNo">111</span> /**<a name="line.111"></a>
<span class="sourceLineNo">112</span> * Check whether the client port in a specific position of the client port list is valid.<a name="line.112"></a>
<span class="sourceLineNo">113</span> * @param index the specified position<a name="line.113"></a>
<span class="sourceLineNo">114</span> */<a name="line.114"></a>
<span class="sourceLineNo">115</span> private boolean hasValidClientPortInList(int index) {<a name="line.115"></a>
<span class="sourceLineNo">116</span> return (clientPortList.size() &gt; index &amp;&amp; clientPortList.get(index) &gt; 0);<a name="line.116"></a>
<span class="sourceLineNo">117</span> }<a name="line.117"></a>
<span class="sourceLineNo">118</span><a name="line.118"></a>
<span class="sourceLineNo">119</span> public void setDefaultClientPort(int clientPort) {<a name="line.119"></a>
<span class="sourceLineNo">120</span> if (clientPort &lt;= 0) {<a name="line.120"></a>
<span class="sourceLineNo">121</span> throw new IllegalArgumentException("Invalid default ZK client port: " + clientPort);<a name="line.121"></a>
<span class="sourceLineNo">122</span> }<a name="line.122"></a>
<span class="sourceLineNo">123</span> this.defaultClientPort = clientPort;<a name="line.123"></a>
<span class="sourceLineNo">124</span> }<a name="line.124"></a>
<span class="sourceLineNo">125</span><a name="line.125"></a>
<span class="sourceLineNo">126</span> /**<a name="line.126"></a>
<span class="sourceLineNo">127</span> * Selects a ZK client port.<a name="line.127"></a>
<span class="sourceLineNo">128</span> * @param seedPort the seed port to start with; -1 means first time.<a name="line.128"></a>
<span class="sourceLineNo">129</span> * @return a valid and unused client port<a name="line.129"></a>
<span class="sourceLineNo">130</span> */<a name="line.130"></a>
<span class="sourceLineNo">131</span> private int selectClientPort(int seedPort) {<a name="line.131"></a>
<span class="sourceLineNo">132</span> int i;<a name="line.132"></a>
<span class="sourceLineNo">133</span> int returnClientPort = seedPort + 1;<a name="line.133"></a>
<span class="sourceLineNo">134</span> if (returnClientPort == 0) {<a name="line.134"></a>
<span class="sourceLineNo">135</span> // If the new port is invalid, find one - starting with the default client port.<a name="line.135"></a>
<span class="sourceLineNo">136</span> // If the default client port is not specified, starting with a random port.<a name="line.136"></a>
<span class="sourceLineNo">137</span> // The random port is selected from the range between 49152 to 65535. These ports cannot be<a name="line.137"></a>
<span class="sourceLineNo">138</span> // registered with IANA and are intended for dynamic allocation (see http://bit.ly/dynports).<a name="line.138"></a>
<span class="sourceLineNo">139</span> if (defaultClientPort &gt; 0) {<a name="line.139"></a>
<span class="sourceLineNo">140</span> returnClientPort = defaultClientPort;<a name="line.140"></a>
<span class="sourceLineNo">141</span> } else {<a name="line.141"></a>
<span class="sourceLineNo">142</span> returnClientPort = 0xc000 + ThreadLocalRandom.current().nextInt(0x3f00);<a name="line.142"></a>
<span class="sourceLineNo">143</span> }<a name="line.143"></a>
<span class="sourceLineNo">144</span> }<a name="line.144"></a>
<span class="sourceLineNo">145</span> // Make sure that the port is unused.<a name="line.145"></a>
<span class="sourceLineNo">146</span> // break when an unused port is found<a name="line.146"></a>
<span class="sourceLineNo">147</span> do {<a name="line.147"></a>
<span class="sourceLineNo">148</span> for (i = 0; i &lt; clientPortList.size(); i++) {<a name="line.148"></a>
<span class="sourceLineNo">149</span> if (returnClientPort == clientPortList.get(i)) {<a name="line.149"></a>
<span class="sourceLineNo">150</span> // Already used. Update the port and retry.<a name="line.150"></a>
<span class="sourceLineNo">151</span> returnClientPort++;<a name="line.151"></a>
<span class="sourceLineNo">152</span> break;<a name="line.152"></a>
<span class="sourceLineNo">153</span> }<a name="line.153"></a>
<span class="sourceLineNo">154</span> }<a name="line.154"></a>
<span class="sourceLineNo">155</span> } while (i != clientPortList.size());<a name="line.155"></a>
<span class="sourceLineNo">156</span> return returnClientPort;<a name="line.156"></a>
<span class="sourceLineNo">157</span> }<a name="line.157"></a>
<span class="sourceLineNo">158</span><a name="line.158"></a>
<span class="sourceLineNo">159</span> public void setTickTime(int tickTime) {<a name="line.159"></a>
<span class="sourceLineNo">160</span> this.tickTime = tickTime;<a name="line.160"></a>
<span class="sourceLineNo">161</span> }<a name="line.161"></a>
<span class="sourceLineNo">162</span><a name="line.162"></a>
<span class="sourceLineNo">163</span> public int getBackupZooKeeperServerNum() {<a name="line.163"></a>
<span class="sourceLineNo">164</span> return zooKeeperServers.size() - 1;<a name="line.164"></a>
<span class="sourceLineNo">165</span> }<a name="line.165"></a>
<span class="sourceLineNo">166</span><a name="line.166"></a>
<span class="sourceLineNo">167</span> public int getZooKeeperServerNum() {<a name="line.167"></a>
<span class="sourceLineNo">168</span> return zooKeeperServers.size();<a name="line.168"></a>
<span class="sourceLineNo">169</span> }<a name="line.169"></a>
<span class="sourceLineNo">170</span><a name="line.170"></a>
<span class="sourceLineNo">171</span> // / XXX: From o.a.zk.t.ClientBase<a name="line.171"></a>
<span class="sourceLineNo">172</span> private static void setupTestEnv() {<a name="line.172"></a>
<span class="sourceLineNo">173</span> // during the tests we run with 100K prealloc in the logs.<a name="line.173"></a>
<span class="sourceLineNo">174</span> // on windows systems prealloc of 64M was seen to take ~15seconds<a name="line.174"></a>
<span class="sourceLineNo">175</span> // resulting in test failure (client timeout on first session).<a name="line.175"></a>
<span class="sourceLineNo">176</span> // set env and directly in order to handle static init/gc issues<a name="line.176"></a>
<span class="sourceLineNo">177</span> System.setProperty("zookeeper.preAllocSize", "100");<a name="line.177"></a>
<span class="sourceLineNo">178</span> FileTxnLog.setPreallocSize(100 * 1024);<a name="line.178"></a>
<span class="sourceLineNo">179</span> // allow all 4 letter words<a name="line.179"></a>
<span class="sourceLineNo">180</span> System.setProperty("zookeeper.4lw.commands.whitelist", "*");<a name="line.180"></a>
<span class="sourceLineNo">181</span> }<a name="line.181"></a>
<span class="sourceLineNo">182</span><a name="line.182"></a>
<span class="sourceLineNo">183</span> public int startup(File baseDir) throws IOException, InterruptedException {<a name="line.183"></a>
<span class="sourceLineNo">184</span> int numZooKeeperServers = clientPortList.size();<a name="line.184"></a>
<span class="sourceLineNo">185</span> if (numZooKeeperServers == 0) {<a name="line.185"></a>
<span class="sourceLineNo">186</span> numZooKeeperServers = 1; // need at least 1 ZK server for testing<a name="line.186"></a>
<span class="sourceLineNo">187</span> }<a name="line.187"></a>
<span class="sourceLineNo">188</span> return startup(baseDir, numZooKeeperServers);<a name="line.188"></a>
<span class="sourceLineNo">189</span> }<a name="line.189"></a>
<span class="sourceLineNo">190</span><a name="line.190"></a>
<span class="sourceLineNo">191</span> /**<a name="line.191"></a>
<span class="sourceLineNo">192</span> * @param baseDir the base directory to use<a name="line.192"></a>
<span class="sourceLineNo">193</span> * @param numZooKeeperServers the number of ZooKeeper servers<a name="line.193"></a>
<span class="sourceLineNo">194</span> * @return ClientPort server bound to, -1 if there was a binding problem and we couldn't pick<a name="line.194"></a>
<span class="sourceLineNo">195</span> * another port.<a name="line.195"></a>
<span class="sourceLineNo">196</span> * @throws IOException if an operation fails during the startup<a name="line.196"></a>
<span class="sourceLineNo">197</span> * @throws InterruptedException if the startup fails<a name="line.197"></a>
<span class="sourceLineNo">198</span> */<a name="line.198"></a>
<span class="sourceLineNo">199</span> public int startup(File baseDir, int numZooKeeperServers)<a name="line.199"></a>
<span class="sourceLineNo">200</span> throws IOException, InterruptedException {<a name="line.200"></a>
<span class="sourceLineNo">201</span> if (numZooKeeperServers &lt;= 0) {<a name="line.201"></a>
<span class="sourceLineNo">202</span> return -1;<a name="line.202"></a>
<span class="sourceLineNo">203</span> }<a name="line.203"></a>
<span class="sourceLineNo">204</span><a name="line.204"></a>
<span class="sourceLineNo">205</span> setupTestEnv();<a name="line.205"></a>
<span class="sourceLineNo">206</span> shutdown();<a name="line.206"></a>
<span class="sourceLineNo">207</span><a name="line.207"></a>
<span class="sourceLineNo">208</span> int tentativePort = -1; // the seed port<a name="line.208"></a>
<span class="sourceLineNo">209</span> int currentClientPort;<a name="line.209"></a>
<span class="sourceLineNo">210</span><a name="line.210"></a>
<span class="sourceLineNo">211</span> // running all the ZK servers<a name="line.211"></a>
<span class="sourceLineNo">212</span> for (int i = 0; i &lt; numZooKeeperServers; i++) {<a name="line.212"></a>
<span class="sourceLineNo">213</span> File dir = new File(baseDir, "zookeeper_" + i).getAbsoluteFile();<a name="line.213"></a>
<span class="sourceLineNo">214</span> createDir(dir);<a name="line.214"></a>
<span class="sourceLineNo">215</span> int tickTimeToUse;<a name="line.215"></a>
<span class="sourceLineNo">216</span> if (this.tickTime &gt; 0) {<a name="line.216"></a>
<span class="sourceLineNo">217</span> tickTimeToUse = this.tickTime;<a name="line.217"></a>
<span class="sourceLineNo">218</span> } else {<a name="line.218"></a>
<span class="sourceLineNo">219</span> tickTimeToUse = TICK_TIME;<a name="line.219"></a>
<span class="sourceLineNo">220</span> }<a name="line.220"></a>
<span class="sourceLineNo">221</span><a name="line.221"></a>
<span class="sourceLineNo">222</span> // Set up client port - if we have already had a list of valid ports, use it.<a name="line.222"></a>
<span class="sourceLineNo">223</span> if (hasValidClientPortInList(i)) {<a name="line.223"></a>
<span class="sourceLineNo">224</span> currentClientPort = clientPortList.get(i);<a name="line.224"></a>
<span class="sourceLineNo">225</span> } else {<a name="line.225"></a>
<span class="sourceLineNo">226</span> tentativePort = selectClientPort(tentativePort); // update the seed<a name="line.226"></a>
<span class="sourceLineNo">227</span> currentClientPort = tentativePort;<a name="line.227"></a>
<span class="sourceLineNo">228</span> }<a name="line.228"></a>
<span class="sourceLineNo">229</span><a name="line.229"></a>
<span class="sourceLineNo">230</span> ZooKeeperServer server = new ZooKeeperServer(dir, dir, tickTimeToUse);<a name="line.230"></a>
<span class="sourceLineNo">231</span> // Setting {min,max}SessionTimeout defaults to be the same as in Zookeeper<a name="line.231"></a>
<span class="sourceLineNo">232</span> server.setMinSessionTimeout(<a name="line.232"></a>
<span class="sourceLineNo">233</span> configuration.getInt("hbase.zookeeper.property.minSessionTimeout", -1));<a name="line.233"></a>
<span class="sourceLineNo">234</span> server.setMaxSessionTimeout(<a name="line.234"></a>
<span class="sourceLineNo">235</span> configuration.getInt("hbase.zookeeper.property.maxSessionTimeout", -1));<a name="line.235"></a>
<span class="sourceLineNo">236</span> NIOServerCnxnFactory standaloneServerFactory;<a name="line.236"></a>
<span class="sourceLineNo">237</span> while (true) {<a name="line.237"></a>
<span class="sourceLineNo">238</span> try {<a name="line.238"></a>
<span class="sourceLineNo">239</span> standaloneServerFactory = new NIOServerCnxnFactory();<a name="line.239"></a>
<span class="sourceLineNo">240</span> String bindAddr =<a name="line.240"></a>
<span class="sourceLineNo">241</span> configuration.get("hbase.zookeeper.property.clientPortAddress", LOOPBACK_HOST);<a name="line.241"></a>
<span class="sourceLineNo">242</span> standaloneServerFactory.configure(new InetSocketAddress(bindAddr, currentClientPort),<a name="line.242"></a>
<span class="sourceLineNo">243</span> configuration.getInt(HConstants.ZOOKEEPER_MAX_CLIENT_CNXNS,<a name="line.243"></a>
<span class="sourceLineNo">244</span> HConstants.DEFAULT_ZOOKEEPER_MAX_CLIENT_CNXNS));<a name="line.244"></a>
<span class="sourceLineNo">245</span> } catch (BindException e) {<a name="line.245"></a>
<span class="sourceLineNo">246</span> LOG.debug("Failed binding ZK Server to client port: " + currentClientPort, e);<a name="line.246"></a>
<span class="sourceLineNo">247</span> // We're told to use some port but it's occupied, fail<a name="line.247"></a>
<span class="sourceLineNo">248</span> if (hasValidClientPortInList(i)) {<a name="line.248"></a>
<span class="sourceLineNo">249</span> return -1;<a name="line.249"></a>
<span class="sourceLineNo">250</span> }<a name="line.250"></a>
<span class="sourceLineNo">251</span> // This port is already in use, try to use another.<a name="line.251"></a>
<span class="sourceLineNo">252</span> tentativePort = selectClientPort(tentativePort);<a name="line.252"></a>
<span class="sourceLineNo">253</span> currentClientPort = tentativePort;<a name="line.253"></a>
<span class="sourceLineNo">254</span> continue;<a name="line.254"></a>
<span class="sourceLineNo">255</span> }<a name="line.255"></a>
<span class="sourceLineNo">256</span> break;<a name="line.256"></a>
<span class="sourceLineNo">257</span> }<a name="line.257"></a>
<span class="sourceLineNo">258</span><a name="line.258"></a>
<span class="sourceLineNo">259</span> // Start up this ZK server. Dump its stats.<a name="line.259"></a>
<span class="sourceLineNo">260</span> standaloneServerFactory.startup(server);<a name="line.260"></a>
<span class="sourceLineNo">261</span> LOG.info("Started connectionTimeout={}, dir={}, {}", connectionTimeout, dir,<a name="line.261"></a>
<span class="sourceLineNo">262</span> getServerConfigurationOnOneLine(server));<a name="line.262"></a>
<span class="sourceLineNo">263</span> // Runs a 'stat' against the servers.<a name="line.263"></a>
<span class="sourceLineNo">264</span> if (!waitForServerUp(currentClientPort, connectionTimeout)) {<a name="line.264"></a>
<span class="sourceLineNo">265</span> Threads.printThreadInfo(System.out, "Why is zk standalone server not coming up?");<a name="line.265"></a>
<span class="sourceLineNo">266</span> throw new IOException(<a name="line.266"></a>
<span class="sourceLineNo">267</span> "Waiting for startup of standalone server; " + "server isRunning=" + server.isRunning());<a name="line.267"></a>
<span class="sourceLineNo">268</span> }<a name="line.268"></a>
<span class="sourceLineNo">269</span><a name="line.269"></a>
<span class="sourceLineNo">270</span> // We have selected a port as a client port. Update clientPortList if necessary.<a name="line.270"></a>
<span class="sourceLineNo">271</span> if (clientPortList.size() &lt;= i) { // it is not in the list, add the port<a name="line.271"></a>
<span class="sourceLineNo">272</span> clientPortList.add(currentClientPort);<a name="line.272"></a>
<span class="sourceLineNo">273</span> } else if (clientPortList.get(i) &lt;= 0) { // the list has invalid port, update with valid port<a name="line.273"></a>
<span class="sourceLineNo">274</span> clientPortList.remove(i);<a name="line.274"></a>
<span class="sourceLineNo">275</span> clientPortList.add(i, currentClientPort);<a name="line.275"></a>
<span class="sourceLineNo">276</span> }<a name="line.276"></a>
<span class="sourceLineNo">277</span><a name="line.277"></a>
<span class="sourceLineNo">278</span> standaloneServerFactoryList.add(standaloneServerFactory);<a name="line.278"></a>
<span class="sourceLineNo">279</span> zooKeeperServers.add(server);<a name="line.279"></a>
<span class="sourceLineNo">280</span> }<a name="line.280"></a>
<span class="sourceLineNo">281</span><a name="line.281"></a>
<span class="sourceLineNo">282</span> // set the first one to be active ZK; Others are backups<a name="line.282"></a>
<span class="sourceLineNo">283</span> activeZKServerIndex = 0;<a name="line.283"></a>
<span class="sourceLineNo">284</span> started = true;<a name="line.284"></a>
<span class="sourceLineNo">285</span> int clientPort = clientPortList.get(activeZKServerIndex);<a name="line.285"></a>
<span class="sourceLineNo">286</span> LOG.info("Started MiniZooKeeperCluster and ran 'stat' on client port={}", clientPort);<a name="line.286"></a>
<span class="sourceLineNo">287</span> return clientPort;<a name="line.287"></a>
<span class="sourceLineNo">288</span> }<a name="line.288"></a>
<span class="sourceLineNo">289</span><a name="line.289"></a>
<span class="sourceLineNo">290</span> private String getServerConfigurationOnOneLine(ZooKeeperServer server) {<a name="line.290"></a>
<span class="sourceLineNo">291</span> StringWriter sw = new StringWriter();<a name="line.291"></a>
<span class="sourceLineNo">292</span> try (PrintWriter pw = new PrintWriter(sw) {<a name="line.292"></a>
<span class="sourceLineNo">293</span> @Override<a name="line.293"></a>
<span class="sourceLineNo">294</span> public void println(int x) {<a name="line.294"></a>
<span class="sourceLineNo">295</span> super.print(x);<a name="line.295"></a>
<span class="sourceLineNo">296</span> super.print(", ");<a name="line.296"></a>
<span class="sourceLineNo">297</span> }<a name="line.297"></a>
<span class="sourceLineNo">298</span><a name="line.298"></a>
<span class="sourceLineNo">299</span> @Override<a name="line.299"></a>
<span class="sourceLineNo">300</span> public void println(String x) {<a name="line.300"></a>
<span class="sourceLineNo">301</span> super.print(x);<a name="line.301"></a>
<span class="sourceLineNo">302</span> super.print(", ");<a name="line.302"></a>
<span class="sourceLineNo">303</span> }<a name="line.303"></a>
<span class="sourceLineNo">304</span> }) {<a name="line.304"></a>
<span class="sourceLineNo">305</span> server.dumpConf(pw);<a name="line.305"></a>
<span class="sourceLineNo">306</span> }<a name="line.306"></a>
<span class="sourceLineNo">307</span> return sw.toString();<a name="line.307"></a>
<span class="sourceLineNo">308</span> }<a name="line.308"></a>
<span class="sourceLineNo">309</span><a name="line.309"></a>
<span class="sourceLineNo">310</span> private void createDir(File dir) throws IOException {<a name="line.310"></a>
<span class="sourceLineNo">311</span> try {<a name="line.311"></a>
<span class="sourceLineNo">312</span> if (!dir.exists()) {<a name="line.312"></a>
<span class="sourceLineNo">313</span> dir.mkdirs();<a name="line.313"></a>
<span class="sourceLineNo">314</span> }<a name="line.314"></a>
<span class="sourceLineNo">315</span> } catch (SecurityException e) {<a name="line.315"></a>
<span class="sourceLineNo">316</span> throw new IOException("creating dir: " + dir, e);<a name="line.316"></a>
<span class="sourceLineNo">317</span> }<a name="line.317"></a>
<span class="sourceLineNo">318</span> }<a name="line.318"></a>
<span class="sourceLineNo">319</span><a name="line.319"></a>
<span class="sourceLineNo">320</span> /**<a name="line.320"></a>
<span class="sourceLineNo">321</span> * @throws IOException if waiting for the shutdown of a server fails<a name="line.321"></a>
<span class="sourceLineNo">322</span> */<a name="line.322"></a>
<span class="sourceLineNo">323</span> public void shutdown() throws IOException {<a name="line.323"></a>
<span class="sourceLineNo">324</span> // shut down all the zk servers<a name="line.324"></a>
<span class="sourceLineNo">325</span> for (int i = 0; i &lt; standaloneServerFactoryList.size(); i++) {<a name="line.325"></a>
<span class="sourceLineNo">326</span> NIOServerCnxnFactory standaloneServerFactory = standaloneServerFactoryList.get(i);<a name="line.326"></a>
<span class="sourceLineNo">327</span> int clientPort = clientPortList.get(i);<a name="line.327"></a>
<span class="sourceLineNo">328</span> standaloneServerFactory.shutdown();<a name="line.328"></a>
<span class="sourceLineNo">329</span> if (!waitForServerDown(clientPort, connectionTimeout)) {<a name="line.329"></a>
<span class="sourceLineNo">330</span> throw new IOException("Waiting for shutdown of standalone server at port=" + clientPort<a name="line.330"></a>
<span class="sourceLineNo">331</span> + ", timeout=" + this.connectionTimeout);<a name="line.331"></a>
<span class="sourceLineNo">332</span> }<a name="line.332"></a>
<span class="sourceLineNo">333</span> }<a name="line.333"></a>
<span class="sourceLineNo">334</span> standaloneServerFactoryList.clear();<a name="line.334"></a>
<span class="sourceLineNo">335</span><a name="line.335"></a>
<span class="sourceLineNo">336</span> for (ZooKeeperServer zkServer : zooKeeperServers) {<a name="line.336"></a>
<span class="sourceLineNo">337</span> // Explicitly close ZKDatabase since ZookeeperServer does not close them<a name="line.337"></a>
<span class="sourceLineNo">338</span> zkServer.getZKDatabase().close();<a name="line.338"></a>
<span class="sourceLineNo">339</span> }<a name="line.339"></a>
<span class="sourceLineNo">340</span> zooKeeperServers.clear();<a name="line.340"></a>
<span class="sourceLineNo">341</span><a name="line.341"></a>
<span class="sourceLineNo">342</span> // clear everything<a name="line.342"></a>
<span class="sourceLineNo">343</span> if (started) {<a name="line.343"></a>
<span class="sourceLineNo">344</span> started = false;<a name="line.344"></a>
<span class="sourceLineNo">345</span> activeZKServerIndex = 0;<a name="line.345"></a>
<span class="sourceLineNo">346</span> clientPortList.clear();<a name="line.346"></a>
<span class="sourceLineNo">347</span> LOG.info("Shutdown MiniZK cluster with all ZK servers");<a name="line.347"></a>
<span class="sourceLineNo">348</span> }<a name="line.348"></a>
<span class="sourceLineNo">349</span> }<a name="line.349"></a>
<span class="sourceLineNo">350</span><a name="line.350"></a>
<span class="sourceLineNo">351</span> /**<a name="line.351"></a>
<span class="sourceLineNo">352</span> * @return clientPort return clientPort if there is another ZK backup can run when killing the<a name="line.352"></a>
<span class="sourceLineNo">353</span> * current active; return -1, if there is no backups.<a name="line.353"></a>
<span class="sourceLineNo">354</span> * @throws IOException if waiting for the shutdown of a server fails<a name="line.354"></a>
<span class="sourceLineNo">355</span> */<a name="line.355"></a>
<span class="sourceLineNo">356</span> public int killCurrentActiveZooKeeperServer() throws IOException, InterruptedException {<a name="line.356"></a>
<span class="sourceLineNo">357</span> if (!started || activeZKServerIndex &lt; 0) {<a name="line.357"></a>
<span class="sourceLineNo">358</span> return -1;<a name="line.358"></a>
<span class="sourceLineNo">359</span> }<a name="line.359"></a>
<span class="sourceLineNo">360</span><a name="line.360"></a>
<span class="sourceLineNo">361</span> // Shutdown the current active one<a name="line.361"></a>
<span class="sourceLineNo">362</span> NIOServerCnxnFactory standaloneServerFactory =<a name="line.362"></a>
<span class="sourceLineNo">363</span> standaloneServerFactoryList.get(activeZKServerIndex);<a name="line.363"></a>
<span class="sourceLineNo">364</span> int clientPort = clientPortList.get(activeZKServerIndex);<a name="line.364"></a>
<span class="sourceLineNo">365</span><a name="line.365"></a>
<span class="sourceLineNo">366</span> standaloneServerFactory.shutdown();<a name="line.366"></a>
<span class="sourceLineNo">367</span> if (!waitForServerDown(clientPort, connectionTimeout)) {<a name="line.367"></a>
<span class="sourceLineNo">368</span> throw new IOException("Waiting for shutdown of standalone server");<a name="line.368"></a>
<span class="sourceLineNo">369</span> }<a name="line.369"></a>
<span class="sourceLineNo">370</span><a name="line.370"></a>
<span class="sourceLineNo">371</span> zooKeeperServers.get(activeZKServerIndex).getZKDatabase().close();<a name="line.371"></a>
<span class="sourceLineNo">372</span><a name="line.372"></a>
<span class="sourceLineNo">373</span> // remove the current active zk server<a name="line.373"></a>
<span class="sourceLineNo">374</span> standaloneServerFactoryList.remove(activeZKServerIndex);<a name="line.374"></a>
<span class="sourceLineNo">375</span> clientPortList.remove(activeZKServerIndex);<a name="line.375"></a>
<span class="sourceLineNo">376</span> zooKeeperServers.remove(activeZKServerIndex);<a name="line.376"></a>
<span class="sourceLineNo">377</span> LOG.info("Kill the current active ZK servers in the cluster on client port: {}", clientPort);<a name="line.377"></a>
<span class="sourceLineNo">378</span><a name="line.378"></a>
<span class="sourceLineNo">379</span> if (standaloneServerFactoryList.isEmpty()) {<a name="line.379"></a>
<span class="sourceLineNo">380</span> // there is no backup servers;<a name="line.380"></a>
<span class="sourceLineNo">381</span> return -1;<a name="line.381"></a>
<span class="sourceLineNo">382</span> }<a name="line.382"></a>
<span class="sourceLineNo">383</span> clientPort = clientPortList.get(activeZKServerIndex);<a name="line.383"></a>
<span class="sourceLineNo">384</span> LOG.info("Activate a backup zk server in the cluster on client port: {}", clientPort);<a name="line.384"></a>
<span class="sourceLineNo">385</span> // return the next back zk server's port<a name="line.385"></a>
<span class="sourceLineNo">386</span> return clientPort;<a name="line.386"></a>
<span class="sourceLineNo">387</span> }<a name="line.387"></a>
<span class="sourceLineNo">388</span><a name="line.388"></a>
<span class="sourceLineNo">389</span> /**<a name="line.389"></a>
<span class="sourceLineNo">390</span> * Kill one back up ZK servers.<a name="line.390"></a>
<span class="sourceLineNo">391</span> * @throws IOException if waiting for the shutdown of a server fails<a name="line.391"></a>
<span class="sourceLineNo">392</span> */<a name="line.392"></a>
<span class="sourceLineNo">393</span> public void killOneBackupZooKeeperServer() throws IOException, InterruptedException {<a name="line.393"></a>
<span class="sourceLineNo">394</span> if (!started || activeZKServerIndex &lt; 0 || standaloneServerFactoryList.size() &lt;= 1) {<a name="line.394"></a>
<span class="sourceLineNo">395</span> return;<a name="line.395"></a>
<span class="sourceLineNo">396</span> }<a name="line.396"></a>
<span class="sourceLineNo">397</span><a name="line.397"></a>
<span class="sourceLineNo">398</span> int backupZKServerIndex = activeZKServerIndex + 1;<a name="line.398"></a>
<span class="sourceLineNo">399</span> // Shutdown the current active one<a name="line.399"></a>
<span class="sourceLineNo">400</span> NIOServerCnxnFactory standaloneServerFactory =<a name="line.400"></a>
<span class="sourceLineNo">401</span> standaloneServerFactoryList.get(backupZKServerIndex);<a name="line.401"></a>
<span class="sourceLineNo">402</span> int clientPort = clientPortList.get(backupZKServerIndex);<a name="line.402"></a>
<span class="sourceLineNo">403</span><a name="line.403"></a>
<span class="sourceLineNo">404</span> standaloneServerFactory.shutdown();<a name="line.404"></a>
<span class="sourceLineNo">405</span> if (!waitForServerDown(clientPort, connectionTimeout)) {<a name="line.405"></a>
<span class="sourceLineNo">406</span> throw new IOException("Waiting for shutdown of standalone server");<a name="line.406"></a>
<span class="sourceLineNo">407</span> }<a name="line.407"></a>
<span class="sourceLineNo">408</span><a name="line.408"></a>
<span class="sourceLineNo">409</span> zooKeeperServers.get(backupZKServerIndex).getZKDatabase().close();<a name="line.409"></a>
<span class="sourceLineNo">410</span><a name="line.410"></a>
<span class="sourceLineNo">411</span> // remove this backup zk server<a name="line.411"></a>
<span class="sourceLineNo">412</span> standaloneServerFactoryList.remove(backupZKServerIndex);<a name="line.412"></a>
<span class="sourceLineNo">413</span> clientPortList.remove(backupZKServerIndex);<a name="line.413"></a>
<span class="sourceLineNo">414</span> zooKeeperServers.remove(backupZKServerIndex);<a name="line.414"></a>
<span class="sourceLineNo">415</span> LOG.info("Kill one backup ZK servers in the cluster on client port: {}", clientPort);<a name="line.415"></a>
<span class="sourceLineNo">416</span> }<a name="line.416"></a>
<span class="sourceLineNo">417</span><a name="line.417"></a>
<span class="sourceLineNo">418</span> // XXX: From o.a.zk.t.ClientBase. We just dropped the check for ssl/secure.<a name="line.418"></a>
<span class="sourceLineNo">419</span> private static boolean waitForServerDown(int port, long timeout) throws IOException {<a name="line.419"></a>
<span class="sourceLineNo">420</span> long start = EnvironmentEdgeManager.currentTime();<a name="line.420"></a>
<span class="sourceLineNo">421</span> while (true) {<a name="line.421"></a>
<span class="sourceLineNo">422</span> try {<a name="line.422"></a>
<span class="sourceLineNo">423</span> send4LetterWord(HOST, port, "stat", false, (int) timeout);<a name="line.423"></a>
<span class="sourceLineNo">424</span> } catch (IOException | X509Exception.SSLContextException e) {<a name="line.424"></a>
<span class="sourceLineNo">425</span> return true;<a name="line.425"></a>
<span class="sourceLineNo">426</span> }<a name="line.426"></a>
<span class="sourceLineNo">427</span> if (EnvironmentEdgeManager.currentTime() &gt; start + timeout) {<a name="line.427"></a>
<span class="sourceLineNo">428</span> break;<a name="line.428"></a>
<span class="sourceLineNo">429</span> }<a name="line.429"></a>
<span class="sourceLineNo">430</span> try {<a name="line.430"></a>
<span class="sourceLineNo">431</span> Thread.sleep(TIMEOUT);<a name="line.431"></a>
<span class="sourceLineNo">432</span> } catch (InterruptedException e) {<a name="line.432"></a>
<span class="sourceLineNo">433</span> throw (InterruptedIOException) new InterruptedIOException().initCause(e);<a name="line.433"></a>
<span class="sourceLineNo">434</span> }<a name="line.434"></a>
<span class="sourceLineNo">435</span> }<a name="line.435"></a>
<span class="sourceLineNo">436</span> return false;<a name="line.436"></a>
<span class="sourceLineNo">437</span> }<a name="line.437"></a>
<span class="sourceLineNo">438</span><a name="line.438"></a>
<span class="sourceLineNo">439</span> // XXX: From o.a.zk.t.ClientBase. Its in the test jar but we don't depend on zk test jar.<a name="line.439"></a>
<span class="sourceLineNo">440</span> // We remove the SSL/secure bit. Not used in here.<a name="line.440"></a>
<span class="sourceLineNo">441</span> private static boolean waitForServerUp(int port, long timeout) throws IOException {<a name="line.441"></a>
<span class="sourceLineNo">442</span> long start = EnvironmentEdgeManager.currentTime();<a name="line.442"></a>
<span class="sourceLineNo">443</span> while (true) {<a name="line.443"></a>
<span class="sourceLineNo">444</span> try {<a name="line.444"></a>
<span class="sourceLineNo">445</span> String result = send4LetterWord(HOST, port, "stat", false, (int) timeout);<a name="line.445"></a>
<span class="sourceLineNo">446</span> if (result.startsWith("Zookeeper version:") &amp;&amp; !result.contains("READ-ONLY")) {<a name="line.446"></a>
<span class="sourceLineNo">447</span> return true;<a name="line.447"></a>
<span class="sourceLineNo">448</span> } else {<a name="line.448"></a>
<span class="sourceLineNo">449</span> LOG.debug("Read {}", result);<a name="line.449"></a>
<span class="sourceLineNo">450</span> }<a name="line.450"></a>
<span class="sourceLineNo">451</span> } catch (ConnectException e) {<a name="line.451"></a>
<span class="sourceLineNo">452</span> // ignore as this is expected, do not log stacktrace<a name="line.452"></a>
<span class="sourceLineNo">453</span> LOG.info("{}:{} not up: {}", HOST, port, e.toString());<a name="line.453"></a>
<span class="sourceLineNo">454</span> } catch (IOException | X509Exception.SSLContextException e) {<a name="line.454"></a>
<span class="sourceLineNo">455</span> // ignore as this is expected<a name="line.455"></a>
<span class="sourceLineNo">456</span> LOG.info("{}:{} not up", HOST, port, e);<a name="line.456"></a>
<span class="sourceLineNo">457</span> }<a name="line.457"></a>
<span class="sourceLineNo">458</span><a name="line.458"></a>
<span class="sourceLineNo">459</span> if (EnvironmentEdgeManager.currentTime() &gt; start + timeout) {<a name="line.459"></a>
<span class="sourceLineNo">460</span> break;<a name="line.460"></a>
<span class="sourceLineNo">461</span> }<a name="line.461"></a>
<span class="sourceLineNo">462</span> try {<a name="line.462"></a>
<span class="sourceLineNo">463</span> Thread.sleep(TIMEOUT);<a name="line.463"></a>
<span class="sourceLineNo">464</span> } catch (InterruptedException e) {<a name="line.464"></a>
<span class="sourceLineNo">465</span> throw (InterruptedIOException) new InterruptedIOException().initCause(e);<a name="line.465"></a>
<span class="sourceLineNo">466</span> }<a name="line.466"></a>
<span class="sourceLineNo">467</span> }<a name="line.467"></a>
<span class="sourceLineNo">468</span> return false;<a name="line.468"></a>
<span class="sourceLineNo">469</span> }<a name="line.469"></a>
<span class="sourceLineNo">470</span><a name="line.470"></a>
<span class="sourceLineNo">471</span> public int getClientPort() {<a name="line.471"></a>
<span class="sourceLineNo">472</span> return activeZKServerIndex &lt; 0 || activeZKServerIndex &gt;= clientPortList.size()<a name="line.472"></a>
<span class="sourceLineNo">473</span> ? -1<a name="line.473"></a>
<span class="sourceLineNo">474</span> : clientPortList.get(activeZKServerIndex);<a name="line.474"></a>
<span class="sourceLineNo">475</span> }<a name="line.475"></a>
<span class="sourceLineNo">476</span><a name="line.476"></a>
<span class="sourceLineNo">477</span> /** Returns Address for this cluster instance. */<a name="line.477"></a>
<span class="sourceLineNo">478</span> public Address getAddress() {<a name="line.478"></a>
<span class="sourceLineNo">479</span> return Address.fromParts(HOST, getClientPort());<a name="line.479"></a>
<span class="sourceLineNo">480</span> }<a name="line.480"></a>
<span class="sourceLineNo">481</span><a name="line.481"></a>
<span class="sourceLineNo">482</span> List&lt;ZooKeeperServer&gt; getZooKeeperServers() {<a name="line.482"></a>
<span class="sourceLineNo">483</span> return zooKeeperServers;<a name="line.483"></a>
<span class="sourceLineNo">484</span> }<a name="line.484"></a>
<span class="sourceLineNo">485</span>}<a name="line.485"></a>
</pre>
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