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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 java.io.IOException;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import java.util.List;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.util.Map.Entry;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.Properties;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.commons.validator.routines.InetAddressValidator;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.hadoop.conf.Configuration;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.HConstants;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.hadoop.util.StringUtils;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.zookeeper.client.ZKClientConfig;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span><a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.hbase.thirdparty.com.google.common.base.Splitter;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span><a name="line.32"></a> |
| <span class="sourceLineNo">033</span>/**<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> * Utility methods for reading, and building the ZooKeeper configuration. The order and priority for<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> * reading the config are as follows:<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * <ol><a name="line.36"></a> |
| <span class="sourceLineNo">037</span> * <li>Property with "hbase.zookeeper.property." prefix from HBase XML.</li><a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * <li>other zookeeper related properties in HBASE XML</li><a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * </ol><a name="line.39"></a> |
| <span class="sourceLineNo">040</span> */<a name="line.40"></a> |
| <span class="sourceLineNo">041</span>@InterfaceAudience.Private<a name="line.41"></a> |
| <span class="sourceLineNo">042</span>public final class ZKConfig {<a name="line.42"></a> |
| <span class="sourceLineNo">043</span><a name="line.43"></a> |
| <span class="sourceLineNo">044</span> private static final String VARIABLE_START = "${";<a name="line.44"></a> |
| <span class="sourceLineNo">045</span><a name="line.45"></a> |
| <span class="sourceLineNo">046</span> private ZKConfig() {<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> /**<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * Make a Properties object holding ZooKeeper config. Parses the corresponding config options from<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * the HBase XML configs and generates the appropriate ZooKeeper properties.<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> * @param conf Configuration to read from.<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * @return Properties holding mappings representing ZooKeeper config file.<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> */<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> public static Properties makeZKProps(Configuration conf) {<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> return makeZKPropsFromHbaseConfig(conf);<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> * Directly map all the hbase.zookeeper.property.KEY properties. Synchronize on conf so no loading<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * of configs while we iterate<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> */<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> private static Properties extractZKPropsFromHBaseConfig(final Configuration conf) {<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> Properties zkProperties = new Properties();<a name="line.64"></a> |
| <span class="sourceLineNo">065</span><a name="line.65"></a> |
| <span class="sourceLineNo">066</span> synchronized (conf) {<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> for (Entry<String, String> entry : conf) {<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> String key = entry.getKey();<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> if (key.startsWith(HConstants.ZK_CFG_PROPERTY_PREFIX)) {<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> String zkKey = key.substring(HConstants.ZK_CFG_PROPERTY_PREFIX_LEN);<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> String value = entry.getValue();<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> // If the value has variables substitutions, need to do a get.<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> if (value.contains(VARIABLE_START)) {<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> value = conf.get(key);<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> }<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> zkProperties.setProperty(zkKey, value);<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> }<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> }<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> }<a name="line.79"></a> |
| <span class="sourceLineNo">080</span><a name="line.80"></a> |
| <span class="sourceLineNo">081</span> return zkProperties;<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> }<a name="line.82"></a> |
| <span class="sourceLineNo">083</span><a name="line.83"></a> |
| <span class="sourceLineNo">084</span> /**<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> * Make a Properties object holding ZooKeeper config. Parses the corresponding config options from<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> * the HBase XML configs and generates the appropriate ZooKeeper properties.<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> * @param conf Configuration to read from.<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> * @return Properties holding mappings representing ZooKeeper config file.<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> */<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> private static Properties makeZKPropsFromHbaseConfig(Configuration conf) {<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> Properties zkProperties = extractZKPropsFromHBaseConfig(conf);<a name="line.91"></a> |
| <span class="sourceLineNo">092</span><a name="line.92"></a> |
| <span class="sourceLineNo">093</span> // If clientPort is not set, assign the default.<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> if (zkProperties.getProperty(HConstants.CLIENT_PORT_STR) == null) {<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> zkProperties.put(HConstants.CLIENT_PORT_STR, HConstants.DEFAULT_ZOOKEEPER_CLIENT_PORT);<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> }<a name="line.96"></a> |
| <span class="sourceLineNo">097</span><a name="line.97"></a> |
| <span class="sourceLineNo">098</span> // Create the server.X properties.<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> int peerPort = conf.getInt("hbase.zookeeper.peerport", 2888);<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> int leaderPort = conf.getInt("hbase.zookeeper.leaderport", 3888);<a name="line.100"></a> |
| <span class="sourceLineNo">101</span><a name="line.101"></a> |
| <span class="sourceLineNo">102</span> final String[] serverHosts = conf.getStrings(HConstants.ZOOKEEPER_QUORUM, HConstants.LOCALHOST);<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> String serverHost;<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> String address;<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> String key;<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> for (int i = 0; i < serverHosts.length; ++i) {<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> if (serverHosts[i].contains(":")) {<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> serverHost = serverHosts[i].substring(0, serverHosts[i].indexOf(':'));<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> } else {<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> serverHost = serverHosts[i];<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> }<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> address = serverHost + ":" + peerPort + ":" + leaderPort;<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> key = "server." + i;<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> zkProperties.put(key, address);<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> return zkProperties;<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> }<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> * Return the ZK Quorum servers string given the specified configuration<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> * @return Quorum servers String<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> */<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> private static String getZKQuorumServersStringFromHbaseConfig(Configuration conf) {<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> String defaultClientPort = Integer.toString(<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> conf.getInt(HConstants.ZOOKEEPER_CLIENT_PORT, HConstants.DEFAULT_ZOOKEEPER_CLIENT_PORT));<a name="line.126"></a> |
| <span class="sourceLineNo">127</span><a name="line.127"></a> |
| <span class="sourceLineNo">128</span> // Build the ZK quorum server string with "server:clientport" list, separated by ','<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> final String[] serverHosts = conf.getStrings(HConstants.ZOOKEEPER_QUORUM, HConstants.LOCALHOST);<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> return buildZKQuorumServerString(serverHosts, defaultClientPort);<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> }<a name="line.131"></a> |
| <span class="sourceLineNo">132</span><a name="line.132"></a> |
| <span class="sourceLineNo">133</span> /**<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> * Return the ZK Quorum servers string given the specified configuration.<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> * @return Quorum servers<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> */<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> public static String getZKQuorumServersString(Configuration conf) {<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> return getZKQuorumServersStringFromHbaseConfig(conf);<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> }<a name="line.139"></a> |
| <span class="sourceLineNo">140</span><a name="line.140"></a> |
| <span class="sourceLineNo">141</span> /**<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> * Build the ZK quorum server string with "server:clientport" list, separated by ','<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> * @param serverHosts a list of servers for ZK quorum<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> * @param clientPort the default client port<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> * @return the string for a list of "server:port" separated by ","<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> */<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> public static String buildZKQuorumServerString(String[] serverHosts, String clientPort) {<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> StringBuilder quorumStringBuilder = new StringBuilder();<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> String serverHost;<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> InetAddressValidator validator = new InetAddressValidator();<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> for (int i = 0; i < serverHosts.length; ++i) {<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> if (serverHosts[i].startsWith("[")) {<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> int index = serverHosts[i].indexOf("]");<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> if (index < 0) {<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> throw new IllegalArgumentException(<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> serverHosts[i] + " starts with '[' but has no matching ']:'");<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> }<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> if (index + 2 == serverHosts[i].length()) {<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> throw new IllegalArgumentException(serverHosts[i] + " doesn't have a port after colon");<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> }<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> // check the IPv6 address e.g. [2001:db8::1]<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> String serverHostWithoutBracket = serverHosts[i].substring(1, index);<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> if (!validator.isValidInet6Address(serverHostWithoutBracket)) {<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> throw new IllegalArgumentException(serverHosts[i] + " is not a valid IPv6 address");<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> }<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> serverHost = serverHosts[i];<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> if ((index + 1 == serverHosts[i].length())) {<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> serverHost = serverHosts[i] + ":" + clientPort;<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> }<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> } else {<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> if (serverHosts[i].contains(":")) {<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> serverHost = serverHosts[i]; // just use the port specified from the input<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> } else {<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> serverHost = serverHosts[i] + ":" + clientPort;<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> }<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> }<a name="line.176"></a> |
| <span class="sourceLineNo">177</span><a name="line.177"></a> |
| <span class="sourceLineNo">178</span> if (i > 0) {<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> quorumStringBuilder.append(',');<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> }<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> quorumStringBuilder.append(serverHost);<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> }<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> return quorumStringBuilder.toString();<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> }<a name="line.184"></a> |
| <span class="sourceLineNo">185</span><a name="line.185"></a> |
| <span class="sourceLineNo">186</span> /**<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> * Verifies that the given key matches the expected format for a ZooKeeper cluster key. The Quorum<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> * for the ZK cluster can have one the following formats (see examples below):<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> * <ol><a name="line.189"></a> |
| <span class="sourceLineNo">190</span> * <li>s1,s2,s3 (no client port in the list, the client port could be obtained from<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> * clientPort)</li><a name="line.191"></a> |
| <span class="sourceLineNo">192</span> * <li>s1:p1,s2:p2,s3:p3 (with client port, which could be same or different for each server, in<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> * this case, the clientPort would be ignored)</li><a name="line.193"></a> |
| <span class="sourceLineNo">194</span> * <li>s1:p1,s2,s3:p3 (mix of (1) and (2) - if port is not specified in a server, it would use the<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> * clientPort; otherwise, it would use the specified port)</li><a name="line.195"></a> |
| <span class="sourceLineNo">196</span> * </ol><a name="line.196"></a> |
| <span class="sourceLineNo">197</span> * @param key the cluster key to validate<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> * @throws IOException if the key could not be parsed<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> */<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> public static void validateClusterKey(String key) throws IOException {<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> transformClusterKey(key);<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> }<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> * Separate the given key into the three configurations it should contain: hbase.zookeeper.quorum,<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> * hbase.zookeeper.client.port and zookeeper.znode.parent<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> * @return the three configuration in the described order<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> */<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> public static ZKClusterKey transformClusterKey(String key) throws IOException {<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> List<String> parts = Splitter.on(':').splitToList(key);<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> String[] partsArray = parts.toArray(new String[parts.size()]);<a name="line.211"></a> |
| <span class="sourceLineNo">212</span><a name="line.212"></a> |
| <span class="sourceLineNo">213</span> if (partsArray.length == 3) {<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> if (!partsArray[2].matches("/.*[^/]")) {<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> throw new IOException("Cluster key passed " + key + " is invalid, the format should be:"<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> + HConstants.ZOOKEEPER_QUORUM + ":" + HConstants.ZOOKEEPER_CLIENT_PORT + ":"<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> + HConstants.ZOOKEEPER_ZNODE_PARENT);<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> }<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> return new ZKClusterKey(partsArray[0], Integer.parseInt(partsArray[1]), partsArray[2]);<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> if (partsArray.length > 3) {<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> // The quorum could contain client port in server:clientport format, try to transform more.<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> String zNodeParent = partsArray[partsArray.length - 1];<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> if (!zNodeParent.matches("/.*[^/]")) {<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> throw new IOException("Cluster key passed " + key + " is invalid, the format should be:"<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> + HConstants.ZOOKEEPER_QUORUM + ":" + HConstants.ZOOKEEPER_CLIENT_PORT + ":"<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> + HConstants.ZOOKEEPER_ZNODE_PARENT);<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> }<a name="line.229"></a> |
| <span class="sourceLineNo">230</span><a name="line.230"></a> |
| <span class="sourceLineNo">231</span> String clientPort = partsArray[partsArray.length - 2];<a name="line.231"></a> |
| <span class="sourceLineNo">232</span><a name="line.232"></a> |
| <span class="sourceLineNo">233</span> // The first part length is the total length minus the lengths of other parts and minus 2 ":"<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> int endQuorumIndex = key.length() - zNodeParent.length() - clientPort.length() - 2;<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> String quorumStringInput = key.substring(0, endQuorumIndex);<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> String[] serverHosts = quorumStringInput.split(",");<a name="line.236"></a> |
| <span class="sourceLineNo">237</span><a name="line.237"></a> |
| <span class="sourceLineNo">238</span> // The common case is that every server has its own client port specified - this means<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> // that (total parts - the ZNodeParent part - the ClientPort part) is equal to<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> // (the number of "," + 1) - "+ 1" because the last server has no ",".<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> if ((partsArray.length - 2) == (serverHosts.length + 1)) {<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> return new ZKClusterKey(quorumStringInput, Integer.parseInt(clientPort), zNodeParent);<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> }<a name="line.243"></a> |
| <span class="sourceLineNo">244</span><a name="line.244"></a> |
| <span class="sourceLineNo">245</span> // For the uncommon case that some servers has no port specified, we need to build the<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> // server:clientport list using default client port for servers without specified port.<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> return new ZKClusterKey(buildZKQuorumServerString(serverHosts, clientPort),<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> Integer.parseInt(clientPort), zNodeParent);<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> }<a name="line.249"></a> |
| <span class="sourceLineNo">250</span><a name="line.250"></a> |
| <span class="sourceLineNo">251</span> throw new IOException("Cluster key passed " + key + " is invalid, the format should be:"<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> + HConstants.ZOOKEEPER_QUORUM + ":" + HConstants.ZOOKEEPER_CLIENT_PORT + ":"<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> + HConstants.ZOOKEEPER_ZNODE_PARENT);<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> }<a name="line.254"></a> |
| <span class="sourceLineNo">255</span><a name="line.255"></a> |
| <span class="sourceLineNo">256</span> /**<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> * Get the key to the ZK ensemble for this configuration without adding a name at the end<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> * @param conf Configuration to use to build the key<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> * @return ensemble key without a name<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> */<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> public static String getZooKeeperClusterKey(Configuration conf) {<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> return getZooKeeperClusterKey(conf, null);<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> }<a name="line.263"></a> |
| <span class="sourceLineNo">264</span><a name="line.264"></a> |
| <span class="sourceLineNo">265</span> /**<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> * Get the key to the ZK ensemble for this configuration and append a name at the end<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> * @param conf Configuration to use to build the key<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> * @param name Name that should be appended at the end if not empty or null<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> * @return ensemble key with a name (if any)<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> */<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> public static String getZooKeeperClusterKey(Configuration conf, String name) {<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> String ensemble = conf.get(HConstants.ZOOKEEPER_QUORUM).replaceAll("[\\t\\n\\x0B\\f\\r]", "");<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> StringBuilder builder = new StringBuilder(ensemble);<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> builder.append(":");<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> builder.append(conf.get(HConstants.ZOOKEEPER_CLIENT_PORT));<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> builder.append(":");<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> builder.append(conf.get(HConstants.ZOOKEEPER_ZNODE_PARENT));<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> if (name != null && !name.isEmpty()) {<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> builder.append(",");<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> builder.append(name);<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> }<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> return builder.toString();<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> }<a name="line.283"></a> |
| <span class="sourceLineNo">284</span><a name="line.284"></a> |
| <span class="sourceLineNo">285</span> /**<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> * Standardize the ZK quorum string: make it a "server:clientport" list, separated by ','<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> * @param quorumStringInput a string contains a list of servers for ZK quorum<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> * @param clientPort the default client port<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> * @return the string for a list of "server:port" separated by ","<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> */<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> public static String standardizeZKQuorumServerString(String quorumStringInput,<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> String clientPort) {<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> String[] serverHosts = quorumStringInput.split(",");<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> return buildZKQuorumServerString(serverHosts, clientPort);<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> }<a name="line.295"></a> |
| <span class="sourceLineNo">296</span><a name="line.296"></a> |
| <span class="sourceLineNo">297</span> // The Quorum for the ZK cluster can have one the following format (see examples below):<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> // (1). s1,s2,s3 (no client port in the list, the client port could be obtained from clientPort)<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> // (2). s1:p1,s2:p2,s3:p3 (with client port, which could be same or different for each server,<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> // in this case, the clientPort would be ignored)<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> // (3). s1:p1,s2,s3:p3 (mix of (1) and (2) - if port is not specified in a server, it would use<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> // the clientPort; otherwise, it would use the specified port)<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> public static class ZKClusterKey {<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> private String quorumString;<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> private int clientPort;<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> private String znodeParent;<a name="line.306"></a> |
| <span class="sourceLineNo">307</span><a name="line.307"></a> |
| <span class="sourceLineNo">308</span> ZKClusterKey(String quorumString, int clientPort, String znodeParent) {<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> this.quorumString = quorumString;<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> this.clientPort = clientPort;<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> this.znodeParent = znodeParent;<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> }<a name="line.312"></a> |
| <span class="sourceLineNo">313</span><a name="line.313"></a> |
| <span class="sourceLineNo">314</span> public String getQuorumString() {<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> return quorumString;<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> }<a name="line.316"></a> |
| <span class="sourceLineNo">317</span><a name="line.317"></a> |
| <span class="sourceLineNo">318</span> public int getClientPort() {<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> return clientPort;<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> }<a name="line.320"></a> |
| <span class="sourceLineNo">321</span><a name="line.321"></a> |
| <span class="sourceLineNo">322</span> public String getZnodeParent() {<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> return znodeParent;<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> }<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> }<a name="line.325"></a> |
| <span class="sourceLineNo">326</span><a name="line.326"></a> |
| <span class="sourceLineNo">327</span> public static ZKClientConfig getZKClientConfig(Configuration conf) {<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> Properties zkProperties = extractZKPropsFromHBaseConfig(conf);<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> ZKClientConfig zkClientConfig = new ZKClientConfig();<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> zkProperties.forEach((k, v) -> zkClientConfig.setProperty(k.toString(), v.toString()));<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> return zkClientConfig;<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> /**<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> * Get the client ZK Quorum servers string<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> * @param conf the configuration to read<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> * @return Client quorum servers, or null if not specified<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> */<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> public static String getClientZKQuorumServersString(Configuration conf) {<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> String clientQuromServers = conf.get(HConstants.CLIENT_ZOOKEEPER_QUORUM);<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> if (clientQuromServers == null) {<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> return null;<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> }<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> int defaultClientPort =<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> conf.getInt(HConstants.ZOOKEEPER_CLIENT_PORT, HConstants.DEFAULT_ZOOKEEPER_CLIENT_PORT);<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> String clientZkClientPort =<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> Integer.toString(conf.getInt(HConstants.CLIENT_ZOOKEEPER_CLIENT_PORT, defaultClientPort));<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> // Build the ZK quorum server string with "server:clientport" list, separated by ','<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> final String[] serverHosts = StringUtils.getStrings(clientQuromServers);<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> return buildZKQuorumServerString(serverHosts, clientZkClientPort);<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> }<a name="line.351"></a> |
| <span class="sourceLineNo">352</span>}<a name="line.352"></a> |
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| </div> |
| </body> |
| </html> |
