http://git-wip-us.apache.org/repos/asf/hbase-site/blob/c54c242b/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.CuratorEventProcessor.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.CuratorEventProcessor.html b/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.CuratorEventProcessor.html deleted file mode 100644 index 74375dd..0000000 --- a/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.CuratorEventProcessor.html +++ /dev/null @@ -1,337 +0,0 @@ -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd";> -<html lang="en"> -<head> -<title>Source code</title> -<link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style"> -</head> -<body> -<div class="sourceContainer"> -<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.client;<a name="line.18"></a> -<span class="sourceLineNo">019</span><a name="line.19"></a> -<span class="sourceLineNo">020</span>import static org.apache.hadoop.hbase.HConstants.DEFAULT_ZK_SESSION_TIMEOUT;<a name="line.20"></a> -<span class="sourceLineNo">021</span>import static org.apache.hadoop.hbase.HConstants.ZK_SESSION_TIMEOUT;<a name="line.21"></a> -<span class="sourceLineNo">022</span>import static org.apache.hadoop.hbase.client.RegionInfo.DEFAULT_REPLICA_ID;<a name="line.22"></a> -<span class="sourceLineNo">023</span>import static org.apache.hadoop.hbase.client.RegionInfoBuilder.FIRST_META_REGIONINFO;<a name="line.23"></a> -<span class="sourceLineNo">024</span>import static org.apache.hadoop.hbase.client.RegionReplicaUtil.getRegionInfoForDefaultReplica;<a name="line.24"></a> -<span class="sourceLineNo">025</span>import static org.apache.hadoop.hbase.client.RegionReplicaUtil.getRegionInfoForReplica;<a name="line.25"></a> -<span class="sourceLineNo">026</span>import static org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil.lengthOfPBMagic;<a name="line.26"></a> -<span class="sourceLineNo">027</span>import static org.apache.hadoop.hbase.zookeeper.ZKMetadata.removeMetaData;<a name="line.27"></a> -<span class="sourceLineNo">028</span><a name="line.28"></a> -<span class="sourceLineNo">029</span>import java.io.IOException;<a name="line.29"></a> -<span class="sourceLineNo">030</span>import java.util.concurrent.CompletableFuture;<a name="line.30"></a> -<span class="sourceLineNo">031</span>import java.util.concurrent.TimeUnit;<a name="line.31"></a> -<span class="sourceLineNo">032</span><a name="line.32"></a> -<span class="sourceLineNo">033</span>import org.apache.commons.lang3.mutable.MutableInt;<a name="line.33"></a> -<span class="sourceLineNo">034</span>import org.apache.commons.logging.Log;<a name="line.34"></a> -<span class="sourceLineNo">035</span>import org.apache.commons.logging.LogFactory;<a name="line.35"></a> -<span class="sourceLineNo">036</span>import org.apache.curator.framework.CuratorFramework;<a name="line.36"></a> -<span class="sourceLineNo">037</span>import org.apache.curator.framework.CuratorFrameworkFactory;<a name="line.37"></a> -<span class="sourceLineNo">038</span>import org.apache.curator.framework.api.BackgroundPathable;<a name="line.38"></a> -<span class="sourceLineNo">039</span>import org.apache.curator.framework.api.CuratorEvent;<a name="line.39"></a> -<span class="sourceLineNo">040</span>import org.apache.curator.retry.RetryNTimes;<a name="line.40"></a> -<span class="sourceLineNo">041</span>import org.apache.hadoop.conf.Configuration;<a name="line.41"></a> -<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.ClusterId;<a name="line.42"></a> -<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.HRegionLocation;<a name="line.43"></a> -<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.RegionLocations;<a name="line.44"></a> -<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.ServerName;<a name="line.45"></a> -<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.exceptions.DeserializationException;<a name="line.46"></a> -<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.47"></a> -<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a name="line.48"></a> -<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos;<a name="line.49"></a> -<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ZooKeeperProtos;<a name="line.50"></a> -<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.51"></a> -<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.52"></a> -<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.zookeeper.ZKConfig;<a name="line.53"></a> -<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.zookeeper.ZNodePaths;<a name="line.54"></a> -<span class="sourceLineNo">055</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.55"></a> -<span class="sourceLineNo">056</span>import org.apache.zookeeper.data.Stat;<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> * Fetch the registry data from zookeeper.<a name="line.60"></a> -<span class="sourceLineNo">061</span> */<a name="line.61"></a> -<span class="sourceLineNo">062</span>@InterfaceAudience.Private<a name="line.62"></a> -<span class="sourceLineNo">063</span>class ZKAsyncRegistry implements AsyncRegistry {<a name="line.63"></a> -<span class="sourceLineNo">064</span><a name="line.64"></a> -<span class="sourceLineNo">065</span> private static final Log LOG = LogFactory.getLog(ZKAsyncRegistry.class);<a name="line.65"></a> -<span class="sourceLineNo">066</span><a name="line.66"></a> -<span class="sourceLineNo">067</span> private final CuratorFramework zk;<a name="line.67"></a> -<span class="sourceLineNo">068</span><a name="line.68"></a> -<span class="sourceLineNo">069</span> private final ZNodePaths znodePaths;<a name="line.69"></a> -<span class="sourceLineNo">070</span><a name="line.70"></a> -<span class="sourceLineNo">071</span> ZKAsyncRegistry(Configuration conf) {<a name="line.71"></a> -<span class="sourceLineNo">072</span> this.znodePaths = new ZNodePaths(conf);<a name="line.72"></a> -<span class="sourceLineNo">073</span> int zkSessionTimeout = conf.getInt(ZK_SESSION_TIMEOUT, DEFAULT_ZK_SESSION_TIMEOUT);<a name="line.73"></a> -<span class="sourceLineNo">074</span> int zkRetry = conf.getInt("zookeeper.recovery.retry", 30);<a name="line.74"></a> -<span class="sourceLineNo">075</span> int zkRetryIntervalMs = conf.getInt("zookeeper.recovery.retry.intervalmill", 1000);<a name="line.75"></a> -<span class="sourceLineNo">076</span> this.zk = CuratorFrameworkFactory.builder()<a name="line.76"></a> -<span class="sourceLineNo">077</span> .connectString(ZKConfig.getZKQuorumServersString(conf)).sessionTimeoutMs(zkSessionTimeout)<a name="line.77"></a> -<span class="sourceLineNo">078</span> .retryPolicy(new RetryNTimes(zkRetry, zkRetryIntervalMs))<a name="line.78"></a> -<span class="sourceLineNo">079</span> .threadFactory(<a name="line.79"></a> -<span class="sourceLineNo">080</span> Threads.newDaemonThreadFactory(String.format("ZKClusterRegistry-0x%08x", hashCode())))<a name="line.80"></a> -<span class="sourceLineNo">081</span> .build();<a name="line.81"></a> -<span class="sourceLineNo">082</span> this.zk.start();<a name="line.82"></a> -<span class="sourceLineNo">083</span> // TODO: temporary workaround for HBASE-19312, must be removed before 2.0.0 release!<a name="line.83"></a> -<span class="sourceLineNo">084</span> try {<a name="line.84"></a> -<span class="sourceLineNo">085</span> this.zk.blockUntilConnected(2, TimeUnit.SECONDS);<a name="line.85"></a> -<span class="sourceLineNo">086</span> } catch (InterruptedException e) {<a name="line.86"></a> -<span class="sourceLineNo">087</span> return;<a name="line.87"></a> -<span class="sourceLineNo">088</span> }<a name="line.88"></a> -<span class="sourceLineNo">089</span> }<a name="line.89"></a> -<span class="sourceLineNo">090</span><a name="line.90"></a> -<span class="sourceLineNo">091</span> private interface CuratorEventProcessor<T> {<a name="line.91"></a> -<span class="sourceLineNo">092</span> T process(CuratorEvent event) throws Exception;<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> private static <T> CompletableFuture<T> exec(BackgroundPathable<?> opBuilder, String path,<a name="line.95"></a> -<span class="sourceLineNo">096</span> CuratorEventProcessor<T> processor) {<a name="line.96"></a> -<span class="sourceLineNo">097</span> CompletableFuture<T> future = new CompletableFuture<>();<a name="line.97"></a> -<span class="sourceLineNo">098</span> try {<a name="line.98"></a> -<span class="sourceLineNo">099</span> opBuilder.inBackground((client, event) -> {<a name="line.99"></a> -<span class="sourceLineNo">100</span> try {<a name="line.100"></a> -<span class="sourceLineNo">101</span> future.complete(processor.process(event));<a name="line.101"></a> -<span class="sourceLineNo">102</span> } catch (Exception e) {<a name="line.102"></a> -<span class="sourceLineNo">103</span> future.completeExceptionally(e);<a name="line.103"></a> -<span class="sourceLineNo">104</span> }<a name="line.104"></a> -<span class="sourceLineNo">105</span> }).withUnhandledErrorListener((msg, e) -> future.completeExceptionally(e)).forPath(path);<a name="line.105"></a> -<span class="sourceLineNo">106</span> } catch (Exception e) {<a name="line.106"></a> -<span class="sourceLineNo">107</span> future.completeExceptionally(e);<a name="line.107"></a> -<span class="sourceLineNo">108</span> }<a name="line.108"></a> -<span class="sourceLineNo">109</span> return future;<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> private static String getClusterId(CuratorEvent event) throws DeserializationException {<a name="line.112"></a> -<span class="sourceLineNo">113</span> byte[] data = event.getData();<a name="line.113"></a> -<span class="sourceLineNo">114</span> if (data == null || data.length == 0) {<a name="line.114"></a> -<span class="sourceLineNo">115</span> return null;<a name="line.115"></a> -<span class="sourceLineNo">116</span> }<a name="line.116"></a> -<span class="sourceLineNo">117</span> data = removeMetaData(data);<a name="line.117"></a> -<span class="sourceLineNo">118</span> return ClusterId.parseFrom(data).toString();<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> @Override<a name="line.121"></a> -<span class="sourceLineNo">122</span> public CompletableFuture<String> getClusterId() {<a name="line.122"></a> -<span class="sourceLineNo">123</span> return exec(zk.getData(), znodePaths.clusterIdZNode, ZKAsyncRegistry::getClusterId);<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> @VisibleForTesting<a name="line.126"></a> -<span class="sourceLineNo">127</span> CuratorFramework getCuratorFramework() {<a name="line.127"></a> -<span class="sourceLineNo">128</span> return zk;<a name="line.128"></a> -<span class="sourceLineNo">129</span> }<a name="line.129"></a> -<span class="sourceLineNo">130</span><a name="line.130"></a> -<span class="sourceLineNo">131</span> private static ZooKeeperProtos.MetaRegionServer getMetaProto(CuratorEvent event)<a name="line.131"></a> -<span class="sourceLineNo">132</span> throws IOException {<a name="line.132"></a> -<span class="sourceLineNo">133</span> byte[] data = event.getData();<a name="line.133"></a> -<span class="sourceLineNo">134</span> if (data == null || data.length == 0) {<a name="line.134"></a> -<span class="sourceLineNo">135</span> return null;<a name="line.135"></a> -<span class="sourceLineNo">136</span> }<a name="line.136"></a> -<span class="sourceLineNo">137</span> data = removeMetaData(data);<a name="line.137"></a> -<span class="sourceLineNo">138</span> int prefixLen = lengthOfPBMagic();<a name="line.138"></a> -<span class="sourceLineNo">139</span> return ZooKeeperProtos.MetaRegionServer.parser().parseFrom(data, prefixLen,<a name="line.139"></a> -<span class="sourceLineNo">140</span> data.length - prefixLen);<a name="line.140"></a> -<span class="sourceLineNo">141</span> }<a name="line.141"></a> -<span class="sourceLineNo">142</span><a name="line.142"></a> -<span class="sourceLineNo">143</span> private static void tryComplete(MutableInt remaining, HRegionLocation[] locs,<a name="line.143"></a> -<span class="sourceLineNo">144</span> CompletableFuture<RegionLocations> future) {<a name="line.144"></a> -<span class="sourceLineNo">145</span> remaining.decrement();<a name="line.145"></a> -<span class="sourceLineNo">146</span> if (remaining.intValue() > 0) {<a name="line.146"></a> -<span class="sourceLineNo">147</span> return;<a name="line.147"></a> -<span class="sourceLineNo">148</span> }<a name="line.148"></a> -<span class="sourceLineNo">149</span> future.complete(new RegionLocations(locs));<a name="line.149"></a> -<span class="sourceLineNo">150</span> }<a name="line.150"></a> -<span class="sourceLineNo">151</span><a name="line.151"></a> -<span class="sourceLineNo">152</span> private Pair<RegionState.State, ServerName> getStateAndServerName(<a name="line.152"></a> -<span class="sourceLineNo">153</span> ZooKeeperProtos.MetaRegionServer proto) {<a name="line.153"></a> -<span class="sourceLineNo">154</span> RegionState.State state;<a name="line.154"></a> -<span class="sourceLineNo">155</span> if (proto.hasState()) {<a name="line.155"></a> -<span class="sourceLineNo">156</span> state = RegionState.State.convert(proto.getState());<a name="line.156"></a> -<span class="sourceLineNo">157</span> } else {<a name="line.157"></a> -<span class="sourceLineNo">158</span> state = RegionState.State.OPEN;<a name="line.158"></a> -<span class="sourceLineNo">159</span> }<a name="line.159"></a> -<span class="sourceLineNo">160</span> HBaseProtos.ServerName snProto = proto.getServer();<a name="line.160"></a> -<span class="sourceLineNo">161</span> return Pair.newPair(state,<a name="line.161"></a> -<span class="sourceLineNo">162</span> ServerName.valueOf(snProto.getHostName(), snProto.getPort(), snProto.getStartCode()));<a name="line.162"></a> -<span class="sourceLineNo">163</span> }<a name="line.163"></a> -<span class="sourceLineNo">164</span><a name="line.164"></a> -<span class="sourceLineNo">165</span> @Override<a name="line.165"></a> -<span class="sourceLineNo">166</span> public CompletableFuture<RegionLocations> getMetaRegionLocation() {<a name="line.166"></a> -<span class="sourceLineNo">167</span> CompletableFuture<RegionLocations> future = new CompletableFuture<>();<a name="line.167"></a> -<span class="sourceLineNo">168</span> HRegionLocation[] locs = new HRegionLocation[znodePaths.metaReplicaZNodes.size()];<a name="line.168"></a> -<span class="sourceLineNo">169</span> MutableInt remaining = new MutableInt(locs.length);<a name="line.169"></a> -<span class="sourceLineNo">170</span> znodePaths.metaReplicaZNodes.forEach((replicaId, path) -> {<a name="line.170"></a> -<span class="sourceLineNo">171</span> if (replicaId == DEFAULT_REPLICA_ID) {<a name="line.171"></a> -<span class="sourceLineNo">172</span> exec(zk.getData(), path, ZKAsyncRegistry::getMetaProto).whenComplete((proto, error) -> {<a name="line.172"></a> -<span class="sourceLineNo">173</span> if (error != null) {<a name="line.173"></a> -<span class="sourceLineNo">174</span> future.completeExceptionally(error);<a name="line.174"></a> -<span class="sourceLineNo">175</span> return;<a name="line.175"></a> -<span class="sourceLineNo">176</span> }<a name="line.176"></a> -<span class="sourceLineNo">177</span> if (proto == null) {<a name="line.177"></a> -<span class="sourceLineNo">178</span> future.completeExceptionally(new IOException("Meta znode is null"));<a name="line.178"></a> -<span class="sourceLineNo">179</span> return;<a name="line.179"></a> -<span class="sourceLineNo">180</span> }<a name="line.180"></a> -<span class="sourceLineNo">181</span> Pair<RegionState.State, ServerName> stateAndServerName = getStateAndServerName(proto);<a name="line.181"></a> -<span class="sourceLineNo">182</span> if (stateAndServerName.getFirst() != RegionState.State.OPEN) {<a name="line.182"></a> -<span class="sourceLineNo">183</span> future.completeExceptionally(<a name="line.183"></a> -<span class="sourceLineNo">184</span> new IOException("Meta region is in state " + stateAndServerName.getFirst()));<a name="line.184"></a> -<span class="sourceLineNo">185</span> return;<a name="line.185"></a> -<span class="sourceLineNo">186</span> }<a name="line.186"></a> -<span class="sourceLineNo">187</span> locs[DEFAULT_REPLICA_ID] = new HRegionLocation(<a name="line.187"></a> -<span class="sourceLineNo">188</span> getRegionInfoForDefaultReplica(FIRST_META_REGIONINFO),<a name="line.188"></a> -<span class="sourceLineNo">189</span> stateAndServerName.getSecond());<a name="line.189"></a> -<span class="sourceLineNo">190</span> tryComplete(remaining, locs, future);<a name="line.190"></a> -<span class="sourceLineNo">191</span> });<a name="line.191"></a> -<span class="sourceLineNo">192</span> } else {<a name="line.192"></a> -<span class="sourceLineNo">193</span> exec(zk.getData(), path, ZKAsyncRegistry::getMetaProto).whenComplete((proto, error) -> {<a name="line.193"></a> -<span class="sourceLineNo">194</span> if (future.isDone()) {<a name="line.194"></a> -<span class="sourceLineNo">195</span> return;<a name="line.195"></a> -<span class="sourceLineNo">196</span> }<a name="line.196"></a> -<span class="sourceLineNo">197</span> if (error != null) {<a name="line.197"></a> -<span class="sourceLineNo">198</span> LOG.warn("Failed to fetch " + path, error);<a name="line.198"></a> -<span class="sourceLineNo">199</span> locs[replicaId] = null;<a name="line.199"></a> -<span class="sourceLineNo">200</span> } else if (proto == null) {<a name="line.200"></a> -<span class="sourceLineNo">201</span> LOG.warn("Meta znode for replica " + replicaId + " is null");<a name="line.201"></a> -<span class="sourceLineNo">202</span> locs[replicaId] = null;<a name="line.202"></a> -<span class="sourceLineNo">203</span> } else {<a name="line.203"></a> -<span class="sourceLineNo">204</span> Pair<RegionState.State, ServerName> stateAndServerName = getStateAndServerName(proto);<a name="line.204"></a> -<span class="sourceLineNo">205</span> if (stateAndServerName.getFirst() != RegionState.State.OPEN) {<a name="line.205"></a> -<span class="sourceLineNo">206</span> LOG.warn("Meta region for replica " + replicaId + " is in state "<a name="line.206"></a> -<span class="sourceLineNo">207</span> + stateAndServerName.getFirst());<a name="line.207"></a> -<span class="sourceLineNo">208</span> locs[replicaId] = null;<a name="line.208"></a> -<span class="sourceLineNo">209</span> } else {<a name="line.209"></a> -<span class="sourceLineNo">210</span> locs[replicaId] = new HRegionLocation(<a name="line.210"></a> -<span class="sourceLineNo">211</span> getRegionInfoForReplica(FIRST_META_REGIONINFO, replicaId),<a name="line.211"></a> -<span class="sourceLineNo">212</span> stateAndServerName.getSecond());<a name="line.212"></a> -<span class="sourceLineNo">213</span> }<a name="line.213"></a> -<span class="sourceLineNo">214</span> }<a name="line.214"></a> -<span class="sourceLineNo">215</span> tryComplete(remaining, locs, future);<a name="line.215"></a> -<span class="sourceLineNo">216</span> });<a name="line.216"></a> -<span class="sourceLineNo">217</span> }<a name="line.217"></a> -<span class="sourceLineNo">218</span> });<a name="line.218"></a> -<span class="sourceLineNo">219</span> return future;<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> private static int getCurrentNrHRS(CuratorEvent event) {<a name="line.222"></a> -<span class="sourceLineNo">223</span> Stat stat = event.getStat();<a name="line.223"></a> -<span class="sourceLineNo">224</span> return stat != null ? stat.getNumChildren() : 0;<a name="line.224"></a> -<span class="sourceLineNo">225</span> }<a name="line.225"></a> -<span class="sourceLineNo">226</span><a name="line.226"></a> -<span class="sourceLineNo">227</span> @Override<a name="line.227"></a> -<span class="sourceLineNo">228</span> public CompletableFuture<Integer> getCurrentNrHRS() {<a name="line.228"></a> -<span class="sourceLineNo">229</span> return exec(zk.checkExists(), znodePaths.rsZNode, ZKAsyncRegistry::getCurrentNrHRS);<a name="line.229"></a> -<span class="sourceLineNo">230</span> }<a name="line.230"></a> -<span class="sourceLineNo">231</span><a name="line.231"></a> -<span class="sourceLineNo">232</span> private static ZooKeeperProtos.Master getMasterProto(CuratorEvent event) throws IOException {<a name="line.232"></a> -<span class="sourceLineNo">233</span> byte[] data = event.getData();<a name="line.233"></a> -<span class="sourceLineNo">234</span> if (data == null || data.length == 0) {<a name="line.234"></a> -<span class="sourceLineNo">235</span> return null;<a name="line.235"></a> -<span class="sourceLineNo">236</span> }<a name="line.236"></a> -<span class="sourceLineNo">237</span> data = removeMetaData(data);<a name="line.237"></a> -<span class="sourceLineNo">238</span> int prefixLen = lengthOfPBMagic();<a name="line.238"></a> -<span class="sourceLineNo">239</span> return ZooKeeperProtos.Master.parser().parseFrom(data, prefixLen, data.length - prefixLen);<a name="line.239"></a> -<span class="sourceLineNo">240</span> }<a name="line.240"></a> -<span class="sourceLineNo">241</span><a name="line.241"></a> -<span class="sourceLineNo">242</span> @Override<a name="line.242"></a> -<span class="sourceLineNo">243</span> public CompletableFuture<ServerName> getMasterAddress() {<a name="line.243"></a> -<span class="sourceLineNo">244</span> return exec(zk.getData(), znodePaths.masterAddressZNode, ZKAsyncRegistry::getMasterProto)<a name="line.244"></a> -<span class="sourceLineNo">245</span> .thenApply(proto -> {<a name="line.245"></a> -<span class="sourceLineNo">246</span> if (proto == null) {<a name="line.246"></a> -<span class="sourceLineNo">247</span> return null;<a name="line.247"></a> -<span class="sourceLineNo">248</span> }<a name="line.248"></a> -<span class="sourceLineNo">249</span> HBaseProtos.ServerName snProto = proto.getMaster();<a name="line.249"></a> -<span class="sourceLineNo">250</span> return ServerName.valueOf(snProto.getHostName(), snProto.getPort(),<a name="line.250"></a> -<span class="sourceLineNo">251</span> snProto.getStartCode());<a name="line.251"></a> -<span class="sourceLineNo">252</span> });<a name="line.252"></a> -<span class="sourceLineNo">253</span> }<a name="line.253"></a> -<span class="sourceLineNo">254</span><a name="line.254"></a> -<span class="sourceLineNo">255</span> @Override<a name="line.255"></a> -<span class="sourceLineNo">256</span> public CompletableFuture<Integer> getMasterInfoPort() {<a name="line.256"></a> -<span class="sourceLineNo">257</span> return exec(zk.getData(), znodePaths.masterAddressZNode, ZKAsyncRegistry::getMasterProto)<a name="line.257"></a> -<span class="sourceLineNo">258</span> .thenApply(proto -> proto != null ? proto.getInfoPort() : 0);<a name="line.258"></a> -<span class="sourceLineNo">259</span> }<a name="line.259"></a> -<span class="sourceLineNo">260</span><a name="line.260"></a> -<span class="sourceLineNo">261</span> @Override<a name="line.261"></a> -<span class="sourceLineNo">262</span> public void close() {<a name="line.262"></a> -<span class="sourceLineNo">263</span> zk.close();<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> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -</pre> -</div> -</body> -</html>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/c54c242b/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.html b/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.html index 74375dd..d8722e4 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/client/ZKAsyncRegistry.html @@ -25,252 +25,217 @@ <span class="sourceLineNo">017</span> */<a name="line.17"></a> <span class="sourceLineNo">018</span>package org.apache.hadoop.hbase.client;<a name="line.18"></a> <span class="sourceLineNo">019</span><a name="line.19"></a> -<span class="sourceLineNo">020</span>import static org.apache.hadoop.hbase.HConstants.DEFAULT_ZK_SESSION_TIMEOUT;<a name="line.20"></a> -<span class="sourceLineNo">021</span>import static org.apache.hadoop.hbase.HConstants.ZK_SESSION_TIMEOUT;<a name="line.21"></a> -<span class="sourceLineNo">022</span>import static org.apache.hadoop.hbase.client.RegionInfo.DEFAULT_REPLICA_ID;<a name="line.22"></a> -<span class="sourceLineNo">023</span>import static org.apache.hadoop.hbase.client.RegionInfoBuilder.FIRST_META_REGIONINFO;<a name="line.23"></a> -<span class="sourceLineNo">024</span>import static org.apache.hadoop.hbase.client.RegionReplicaUtil.getRegionInfoForDefaultReplica;<a name="line.24"></a> -<span class="sourceLineNo">025</span>import static org.apache.hadoop.hbase.client.RegionReplicaUtil.getRegionInfoForReplica;<a name="line.25"></a> -<span class="sourceLineNo">026</span>import static org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil.lengthOfPBMagic;<a name="line.26"></a> -<span class="sourceLineNo">027</span>import static org.apache.hadoop.hbase.zookeeper.ZKMetadata.removeMetaData;<a name="line.27"></a> -<span class="sourceLineNo">028</span><a name="line.28"></a> -<span class="sourceLineNo">029</span>import java.io.IOException;<a name="line.29"></a> -<span class="sourceLineNo">030</span>import java.util.concurrent.CompletableFuture;<a name="line.30"></a> -<span class="sourceLineNo">031</span>import java.util.concurrent.TimeUnit;<a name="line.31"></a> -<span class="sourceLineNo">032</span><a name="line.32"></a> -<span class="sourceLineNo">033</span>import org.apache.commons.lang3.mutable.MutableInt;<a name="line.33"></a> -<span class="sourceLineNo">034</span>import org.apache.commons.logging.Log;<a name="line.34"></a> -<span class="sourceLineNo">035</span>import org.apache.commons.logging.LogFactory;<a name="line.35"></a> -<span class="sourceLineNo">036</span>import org.apache.curator.framework.CuratorFramework;<a name="line.36"></a> -<span class="sourceLineNo">037</span>import org.apache.curator.framework.CuratorFrameworkFactory;<a name="line.37"></a> -<span class="sourceLineNo">038</span>import org.apache.curator.framework.api.BackgroundPathable;<a name="line.38"></a> -<span class="sourceLineNo">039</span>import org.apache.curator.framework.api.CuratorEvent;<a name="line.39"></a> -<span class="sourceLineNo">040</span>import org.apache.curator.retry.RetryNTimes;<a name="line.40"></a> -<span class="sourceLineNo">041</span>import org.apache.hadoop.conf.Configuration;<a name="line.41"></a> -<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.ClusterId;<a name="line.42"></a> -<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.HRegionLocation;<a name="line.43"></a> -<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.RegionLocations;<a name="line.44"></a> -<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.ServerName;<a name="line.45"></a> -<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.exceptions.DeserializationException;<a name="line.46"></a> -<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.47"></a> -<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a name="line.48"></a> -<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos;<a name="line.49"></a> -<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ZooKeeperProtos;<a name="line.50"></a> -<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.51"></a> -<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.52"></a> -<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.zookeeper.ZKConfig;<a name="line.53"></a> -<span class="sourceLineNo">054</span>import org.apache.hadoop.hbase.zookeeper.ZNodePaths;<a name="line.54"></a> -<span class="sourceLineNo">055</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.55"></a> -<span class="sourceLineNo">056</span>import org.apache.zookeeper.data.Stat;<a name="line.56"></a> -<span class="sourceLineNo">057</span><a name="line.57"></a> +<span class="sourceLineNo">020</span>import static org.apache.hadoop.hbase.client.RegionInfo.DEFAULT_REPLICA_ID;<a name="line.20"></a> +<span class="sourceLineNo">021</span>import static org.apache.hadoop.hbase.client.RegionInfoBuilder.FIRST_META_REGIONINFO;<a name="line.21"></a> +<span class="sourceLineNo">022</span>import static org.apache.hadoop.hbase.client.RegionReplicaUtil.getRegionInfoForDefaultReplica;<a name="line.22"></a> +<span class="sourceLineNo">023</span>import static org.apache.hadoop.hbase.client.RegionReplicaUtil.getRegionInfoForReplica;<a name="line.23"></a> +<span class="sourceLineNo">024</span>import static org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil.lengthOfPBMagic;<a name="line.24"></a> +<span class="sourceLineNo">025</span>import static org.apache.hadoop.hbase.zookeeper.ZKMetadata.removeMetaData;<a name="line.25"></a> +<span class="sourceLineNo">026</span><a name="line.26"></a> +<span class="sourceLineNo">027</span>import java.io.IOException;<a name="line.27"></a> +<span class="sourceLineNo">028</span>import java.util.concurrent.CompletableFuture;<a name="line.28"></a> +<span class="sourceLineNo">029</span><a name="line.29"></a> +<span class="sourceLineNo">030</span>import org.apache.commons.lang3.mutable.MutableInt;<a name="line.30"></a> +<span class="sourceLineNo">031</span>import org.apache.commons.logging.Log;<a name="line.31"></a> +<span class="sourceLineNo">032</span>import org.apache.commons.logging.LogFactory;<a name="line.32"></a> +<span class="sourceLineNo">033</span>import org.apache.hadoop.conf.Configuration;<a name="line.33"></a> +<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.ClusterId;<a name="line.34"></a> +<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.HRegionLocation;<a name="line.35"></a> +<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.RegionLocations;<a name="line.36"></a> +<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.ServerName;<a name="line.37"></a> +<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.exceptions.DeserializationException;<a name="line.38"></a> +<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.master.RegionState;<a name="line.39"></a> +<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.40"></a> +<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.zookeeper.ReadOnlyZKClient;<a name="line.41"></a> +<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.zookeeper.ZNodePaths;<a name="line.42"></a> +<span class="sourceLineNo">043</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.43"></a> +<span class="sourceLineNo">044</span><a name="line.44"></a> +<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;<a name="line.45"></a> +<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos;<a name="line.46"></a> +<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.ZooKeeperProtos;<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> * Fetch the registry data from zookeeper.<a name="line.50"></a> +<span class="sourceLineNo">051</span> */<a name="line.51"></a> +<span class="sourceLineNo">052</span>@InterfaceAudience.Private<a name="line.52"></a> +<span class="sourceLineNo">053</span>class ZKAsyncRegistry implements AsyncRegistry {<a name="line.53"></a> +<span class="sourceLineNo">054</span><a name="line.54"></a> +<span class="sourceLineNo">055</span> private static final Log LOG = LogFactory.getLog(ZKAsyncRegistry.class);<a name="line.55"></a> +<span class="sourceLineNo">056</span><a name="line.56"></a> +<span class="sourceLineNo">057</span> private final ReadOnlyZKClient zk;<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> * Fetch the registry data from zookeeper.<a name="line.60"></a> -<span class="sourceLineNo">061</span> */<a name="line.61"></a> -<span class="sourceLineNo">062</span>@InterfaceAudience.Private<a name="line.62"></a> -<span class="sourceLineNo">063</span>class ZKAsyncRegistry implements AsyncRegistry {<a name="line.63"></a> -<span class="sourceLineNo">064</span><a name="line.64"></a> -<span class="sourceLineNo">065</span> private static final Log LOG = LogFactory.getLog(ZKAsyncRegistry.class);<a name="line.65"></a> -<span class="sourceLineNo">066</span><a name="line.66"></a> -<span class="sourceLineNo">067</span> private final CuratorFramework zk;<a name="line.67"></a> -<span class="sourceLineNo">068</span><a name="line.68"></a> -<span class="sourceLineNo">069</span> private final ZNodePaths znodePaths;<a name="line.69"></a> -<span class="sourceLineNo">070</span><a name="line.70"></a> -<span class="sourceLineNo">071</span> ZKAsyncRegistry(Configuration conf) {<a name="line.71"></a> -<span class="sourceLineNo">072</span> this.znodePaths = new ZNodePaths(conf);<a name="line.72"></a> -<span class="sourceLineNo">073</span> int zkSessionTimeout = conf.getInt(ZK_SESSION_TIMEOUT, DEFAULT_ZK_SESSION_TIMEOUT);<a name="line.73"></a> -<span class="sourceLineNo">074</span> int zkRetry = conf.getInt("zookeeper.recovery.retry", 30);<a name="line.74"></a> -<span class="sourceLineNo">075</span> int zkRetryIntervalMs = conf.getInt("zookeeper.recovery.retry.intervalmill", 1000);<a name="line.75"></a> -<span class="sourceLineNo">076</span> this.zk = CuratorFrameworkFactory.builder()<a name="line.76"></a> -<span class="sourceLineNo">077</span> .connectString(ZKConfig.getZKQuorumServersString(conf)).sessionTimeoutMs(zkSessionTimeout)<a name="line.77"></a> -<span class="sourceLineNo">078</span> .retryPolicy(new RetryNTimes(zkRetry, zkRetryIntervalMs))<a name="line.78"></a> -<span class="sourceLineNo">079</span> .threadFactory(<a name="line.79"></a> -<span class="sourceLineNo">080</span> Threads.newDaemonThreadFactory(String.format("ZKClusterRegistry-0x%08x", hashCode())))<a name="line.80"></a> -<span class="sourceLineNo">081</span> .build();<a name="line.81"></a> -<span class="sourceLineNo">082</span> this.zk.start();<a name="line.82"></a> -<span class="sourceLineNo">083</span> // TODO: temporary workaround for HBASE-19312, must be removed before 2.0.0 release!<a name="line.83"></a> -<span class="sourceLineNo">084</span> try {<a name="line.84"></a> -<span class="sourceLineNo">085</span> this.zk.blockUntilConnected(2, TimeUnit.SECONDS);<a name="line.85"></a> -<span class="sourceLineNo">086</span> } catch (InterruptedException e) {<a name="line.86"></a> -<span class="sourceLineNo">087</span> return;<a name="line.87"></a> -<span class="sourceLineNo">088</span> }<a name="line.88"></a> -<span class="sourceLineNo">089</span> }<a name="line.89"></a> -<span class="sourceLineNo">090</span><a name="line.90"></a> -<span class="sourceLineNo">091</span> private interface CuratorEventProcessor<T> {<a name="line.91"></a> -<span class="sourceLineNo">092</span> T process(CuratorEvent event) throws Exception;<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> private static <T> CompletableFuture<T> exec(BackgroundPathable<?> opBuilder, String path,<a name="line.95"></a> -<span class="sourceLineNo">096</span> CuratorEventProcessor<T> processor) {<a name="line.96"></a> -<span class="sourceLineNo">097</span> CompletableFuture<T> future = new CompletableFuture<>();<a name="line.97"></a> -<span class="sourceLineNo">098</span> try {<a name="line.98"></a> -<span class="sourceLineNo">099</span> opBuilder.inBackground((client, event) -> {<a name="line.99"></a> -<span class="sourceLineNo">100</span> try {<a name="line.100"></a> -<span class="sourceLineNo">101</span> future.complete(processor.process(event));<a name="line.101"></a> -<span class="sourceLineNo">102</span> } catch (Exception e) {<a name="line.102"></a> -<span class="sourceLineNo">103</span> future.completeExceptionally(e);<a name="line.103"></a> -<span class="sourceLineNo">104</span> }<a name="line.104"></a> -<span class="sourceLineNo">105</span> }).withUnhandledErrorListener((msg, e) -> future.completeExceptionally(e)).forPath(path);<a name="line.105"></a> -<span class="sourceLineNo">106</span> } catch (Exception e) {<a name="line.106"></a> -<span class="sourceLineNo">107</span> future.completeExceptionally(e);<a name="line.107"></a> -<span class="sourceLineNo">108</span> }<a name="line.108"></a> -<span class="sourceLineNo">109</span> return future;<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> private static String getClusterId(CuratorEvent event) throws DeserializationException {<a name="line.112"></a> -<span class="sourceLineNo">113</span> byte[] data = event.getData();<a name="line.113"></a> -<span class="sourceLineNo">114</span> if (data == null || data.length == 0) {<a name="line.114"></a> -<span class="sourceLineNo">115</span> return null;<a name="line.115"></a> -<span class="sourceLineNo">116</span> }<a name="line.116"></a> -<span class="sourceLineNo">117</span> data = removeMetaData(data);<a name="line.117"></a> -<span class="sourceLineNo">118</span> return ClusterId.parseFrom(data).toString();<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> @Override<a name="line.121"></a> -<span class="sourceLineNo">122</span> public CompletableFuture<String> getClusterId() {<a name="line.122"></a> -<span class="sourceLineNo">123</span> return exec(zk.getData(), znodePaths.clusterIdZNode, ZKAsyncRegistry::getClusterId);<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> @VisibleForTesting<a name="line.126"></a> -<span class="sourceLineNo">127</span> CuratorFramework getCuratorFramework() {<a name="line.127"></a> -<span class="sourceLineNo">128</span> return zk;<a name="line.128"></a> -<span class="sourceLineNo">129</span> }<a name="line.129"></a> -<span class="sourceLineNo">130</span><a name="line.130"></a> -<span class="sourceLineNo">131</span> private static ZooKeeperProtos.MetaRegionServer getMetaProto(CuratorEvent event)<a name="line.131"></a> -<span class="sourceLineNo">132</span> throws IOException {<a name="line.132"></a> -<span class="sourceLineNo">133</span> byte[] data = event.getData();<a name="line.133"></a> -<span class="sourceLineNo">134</span> if (data == null || data.length == 0) {<a name="line.134"></a> -<span class="sourceLineNo">135</span> return null;<a name="line.135"></a> -<span class="sourceLineNo">136</span> }<a name="line.136"></a> -<span class="sourceLineNo">137</span> data = removeMetaData(data);<a name="line.137"></a> -<span class="sourceLineNo">138</span> int prefixLen = lengthOfPBMagic();<a name="line.138"></a> -<span class="sourceLineNo">139</span> return ZooKeeperProtos.MetaRegionServer.parser().parseFrom(data, prefixLen,<a name="line.139"></a> -<span class="sourceLineNo">140</span> data.length - prefixLen);<a name="line.140"></a> -<span class="sourceLineNo">141</span> }<a name="line.141"></a> -<span class="sourceLineNo">142</span><a name="line.142"></a> -<span class="sourceLineNo">143</span> private static void tryComplete(MutableInt remaining, HRegionLocation[] locs,<a name="line.143"></a> -<span class="sourceLineNo">144</span> CompletableFuture<RegionLocations> future) {<a name="line.144"></a> -<span class="sourceLineNo">145</span> remaining.decrement();<a name="line.145"></a> -<span class="sourceLineNo">146</span> if (remaining.intValue() > 0) {<a name="line.146"></a> -<span class="sourceLineNo">147</span> return;<a name="line.147"></a> -<span class="sourceLineNo">148</span> }<a name="line.148"></a> -<span class="sourceLineNo">149</span> future.complete(new RegionLocations(locs));<a name="line.149"></a> -<span class="sourceLineNo">150</span> }<a name="line.150"></a> -<span class="sourceLineNo">151</span><a name="line.151"></a> -<span class="sourceLineNo">152</span> private Pair<RegionState.State, ServerName> getStateAndServerName(<a name="line.152"></a> -<span class="sourceLineNo">153</span> ZooKeeperProtos.MetaRegionServer proto) {<a name="line.153"></a> -<span class="sourceLineNo">154</span> RegionState.State state;<a name="line.154"></a> -<span class="sourceLineNo">155</span> if (proto.hasState()) {<a name="line.155"></a> -<span class="sourceLineNo">156</span> state = RegionState.State.convert(proto.getState());<a name="line.156"></a> -<span class="sourceLineNo">157</span> } else {<a name="line.157"></a> -<span class="sourceLineNo">158</span> state = RegionState.State.OPEN;<a name="line.158"></a> -<span class="sourceLineNo">159</span> }<a name="line.159"></a> -<span class="sourceLineNo">160</span> HBaseProtos.ServerName snProto = proto.getServer();<a name="line.160"></a> -<span class="sourceLineNo">161</span> return Pair.newPair(state,<a name="line.161"></a> -<span class="sourceLineNo">162</span> ServerName.valueOf(snProto.getHostName(), 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class="sourceLineNo">192</span> } else {<a name="line.192"></a> -<span class="sourceLineNo">193</span> exec(zk.getData(), path, ZKAsyncRegistry::getMetaProto).whenComplete((proto, error) -> {<a name="line.193"></a> -<span class="sourceLineNo">194</span> if (future.isDone()) {<a name="line.194"></a> -<span class="sourceLineNo">195</span> return;<a name="line.195"></a> -<span class="sourceLineNo">196</span> }<a name="line.196"></a> -<span class="sourceLineNo">197</span> if (error != null) {<a name="line.197"></a> -<span class="sourceLineNo">198</span> LOG.warn("Failed to fetch " + path, error);<a name="line.198"></a> -<span class="sourceLineNo">199</span> locs[replicaId] = null;<a name="line.199"></a> -<span class="sourceLineNo">200</span> } else if (proto == null) {<a name="line.200"></a> -<span class="sourceLineNo">201</span> LOG.warn("Meta znode for replica " + replicaId + " is null");<a name="line.201"></a> -<span class="sourceLineNo">202</span> locs[replicaId] = null;<a name="line.202"></a> -<span class="sourceLineNo">203</span> } else {<a name="line.203"></a> -<span class="sourceLineNo">204</span> Pair<RegionState.State, ServerName> stateAndServerName = getStateAndServerName(proto);<a name="line.204"></a> -<span class="sourceLineNo">205</span> if (stateAndServerName.getFirst() != RegionState.State.OPEN) {<a name="line.205"></a> -<span class="sourceLineNo">206</span> LOG.warn("Meta region for replica " + replicaId + " is in state "<a name="line.206"></a> -<span class="sourceLineNo">207</span> + stateAndServerName.getFirst());<a name="line.207"></a> -<span class="sourceLineNo">208</span> locs[replicaId] = null;<a name="line.208"></a> -<span class="sourceLineNo">209</span> } else {<a name="line.209"></a> -<span class="sourceLineNo">210</span> locs[replicaId] = new HRegionLocation(<a name="line.210"></a> -<span class="sourceLineNo">211</span> getRegionInfoForReplica(FIRST_META_REGIONINFO, replicaId),<a name="line.211"></a> -<span class="sourceLineNo">212</span> stateAndServerName.getSecond());<a name="line.212"></a> -<span class="sourceLineNo">213</span> }<a name="line.213"></a> -<span class="sourceLineNo">214</span> }<a name="line.214"></a> -<span class="sourceLineNo">215</span> tryComplete(remaining, locs, future);<a name="line.215"></a> -<span class="sourceLineNo">216</span> });<a name="line.216"></a> -<span class="sourceLineNo">217</span> }<a name="line.217"></a> -<span class="sourceLineNo">218</span> });<a name="line.218"></a> -<span class="sourceLineNo">219</span> return future;<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> private static int getCurrentNrHRS(CuratorEvent event) {<a name="line.222"></a> -<span class="sourceLineNo">223</span> Stat stat = event.getStat();<a name="line.223"></a> -<span class="sourceLineNo">224</span> return stat != null ? stat.getNumChildren() : 0;<a name="line.224"></a> -<span class="sourceLineNo">225</span> }<a name="line.225"></a> -<span class="sourceLineNo">226</span><a name="line.226"></a> -<span class="sourceLineNo">227</span> @Override<a name="line.227"></a> -<span class="sourceLineNo">228</span> public CompletableFuture<Integer> getCurrentNrHRS() {<a name="line.228"></a> -<span class="sourceLineNo">229</span> return exec(zk.checkExists(), znodePaths.rsZNode, ZKAsyncRegistry::getCurrentNrHRS);<a name="line.229"></a> -<span class="sourceLineNo">230</span> }<a name="line.230"></a> -<span class="sourceLineNo">231</span><a name="line.231"></a> -<span class="sourceLineNo">232</span> private static ZooKeeperProtos.Master getMasterProto(CuratorEvent event) throws IOException {<a name="line.232"></a> -<span class="sourceLineNo">233</span> byte[] data = event.getData();<a name="line.233"></a> -<span class="sourceLineNo">234</span> if (data == null || data.length == 0) {<a name="line.234"></a> -<span 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error) -> {<a name="line.72"></a> +<span class="sourceLineNo">073</span> if (error != null) {<a name="line.73"></a> +<span class="sourceLineNo">074</span> future.completeExceptionally(error);<a name="line.74"></a> +<span class="sourceLineNo">075</span> return;<a name="line.75"></a> +<span class="sourceLineNo">076</span> }<a name="line.76"></a> +<span class="sourceLineNo">077</span> try {<a name="line.77"></a> +<span class="sourceLineNo">078</span> future.complete(converter.convert(data));<a name="line.78"></a> +<span class="sourceLineNo">079</span> } catch (Exception e) {<a name="line.79"></a> +<span class="sourceLineNo">080</span> future.completeExceptionally(e);<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> return future;<a name="line.83"></a> +<span class="sourceLineNo">084</span> }<a name="line.84"></a> +<span class="sourceLineNo">085</span><a name="line.85"></a> +<span class="sourceLineNo">086</span> private static String getClusterId(byte[] data) throws DeserializationException {<a name="line.86"></a> +<span class="sourceLineNo">087</span> if (data == null || data.length == 0) {<a name="line.87"></a> +<span class="sourceLineNo">088</span> return null;<a name="line.88"></a> +<span class="sourceLineNo">089</span> }<a name="line.89"></a> +<span class="sourceLineNo">090</span> data = removeMetaData(data);<a name="line.90"></a> +<span class="sourceLineNo">091</span> return ClusterId.parseFrom(data).toString();<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> @Override<a name="line.94"></a> +<span class="sourceLineNo">095</span> public CompletableFuture<String> getClusterId() {<a name="line.95"></a> +<span class="sourceLineNo">096</span> return getAndConvert(znodePaths.clusterIdZNode, ZKAsyncRegistry::getClusterId);<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> @VisibleForTesting<a name="line.99"></a> +<span class="sourceLineNo">100</span> ReadOnlyZKClient getZKClient() {<a name="line.100"></a> +<span class="sourceLineNo">101</span> return zk;<a name="line.101"></a> +<span class="sourceLineNo">102</span> }<a name="line.102"></a> +<span class="sourceLineNo">103</span><a name="line.103"></a> +<span class="sourceLineNo">104</span> private static ZooKeeperProtos.MetaRegionServer getMetaProto(byte[] data) throws IOException {<a name="line.104"></a> +<span class="sourceLineNo">105</span> if (data == null || data.length == 0) {<a name="line.105"></a> +<span class="sourceLineNo">106</span> return null;<a name="line.106"></a> +<span class="sourceLineNo">107</span> }<a name="line.107"></a> +<span class="sourceLineNo">108</span> data = removeMetaData(data);<a name="line.108"></a> +<span class="sourceLineNo">109</span> int prefixLen = lengthOfPBMagic();<a name="line.109"></a> +<span class="sourceLineNo">110</span> return ZooKeeperProtos.MetaRegionServer.parser().parseFrom(data, prefixLen,<a name="line.110"></a> +<span class="sourceLineNo">111</span> data.length - prefixLen);<a name="line.111"></a> +<span class="sourceLineNo">112</span> }<a name="line.112"></a> +<span class="sourceLineNo">113</span><a name="line.113"></a> +<span class="sourceLineNo">114</span> private static void tryComplete(MutableInt remaining, HRegionLocation[] locs,<a name="line.114"></a> +<span class="sourceLineNo">115</span> CompletableFuture<RegionLocations> future) {<a name="line.115"></a> +<span class="sourceLineNo">116</span> remaining.decrement();<a name="line.116"></a> +<span class="sourceLineNo">117</span> if (remaining.intValue() > 0) {<a name="line.117"></a> +<span class="sourceLineNo">118</span> return;<a name="line.118"></a> +<span class="sourceLineNo">119</span> }<a name="line.119"></a> +<span class="sourceLineNo">120</span> future.complete(new RegionLocations(locs));<a name="line.120"></a> +<span class="sourceLineNo">121</span> }<a name="line.121"></a> +<span class="sourceLineNo">122</span><a name="line.122"></a> +<span class="sourceLineNo">123</span> private Pair<RegionState.State, ServerName> getStateAndServerName(<a name="line.123"></a> +<span class="sourceLineNo">124</span> ZooKeeperProtos.MetaRegionServer proto) {<a name="line.124"></a> +<span class="sourceLineNo">125</span> RegionState.State state;<a name="line.125"></a> +<span class="sourceLineNo">126</span> if (proto.hasState()) {<a name="line.126"></a> +<span class="sourceLineNo">127</span> state = RegionState.State.convert(proto.getState());<a name="line.127"></a> +<span class="sourceLineNo">128</span> } else {<a name="line.128"></a> +<span class="sourceLineNo">129</span> state = RegionState.State.OPEN;<a name="line.129"></a> +<span class="sourceLineNo">130</span> }<a name="line.130"></a> +<span class="sourceLineNo">131</span> HBaseProtos.ServerName snProto = proto.getServer();<a name="line.131"></a> +<span class="sourceLineNo">132</span> return Pair.newPair(state,<a name="line.132"></a> +<span class="sourceLineNo">133</span> ServerName.valueOf(snProto.getHostName(), snProto.getPort(), snProto.getStartCode()));<a name="line.133"></a> +<span class="sourceLineNo">134</span> }<a name="line.134"></a> +<span class="sourceLineNo">135</span><a name="line.135"></a> +<span class="sourceLineNo">136</span> @Override<a name="line.136"></a> +<span class="sourceLineNo">137</span> public CompletableFuture<RegionLocations> getMetaRegionLocation() {<a name="line.137"></a> +<span class="sourceLineNo">138</span> CompletableFuture<RegionLocations> future = new CompletableFuture<>();<a name="line.138"></a> +<span class="sourceLineNo">139</span> HRegionLocation[] locs = new HRegionLocation[znodePaths.metaReplicaZNodes.size()];<a name="line.139"></a> +<span class="sourceLineNo">140</span> MutableInt remaining = new MutableInt(locs.length);<a name="line.140"></a> +<span class="sourceLineNo">141</span> znodePaths.metaReplicaZNodes.forEach((replicaId, path) -> {<a name="line.141"></a> +<span class="sourceLineNo">142</span> if (replicaId == DEFAULT_REPLICA_ID) {<a name="line.142"></a> +<span class="sourceLineNo">143</span> getAndConvert(path, ZKAsyncRegistry::getMetaProto).whenComplete((proto, error) -> {<a name="line.143"></a> +<span class="sourceLineNo">144</span> if (error != null) {<a name="line.144"></a> +<span class="sourceLineNo">145</span> future.completeExceptionally(error);<a name="line.145"></a> +<span class="sourceLineNo">146</span> return;<a name="line.146"></a> +<span class="sourceLineNo">147</span> }<a name="line.147"></a> +<span class="sourceLineNo">148</span> if (proto == null) {<a name="line.148"></a> +<span class="sourceLineNo">149</span> future.completeExceptionally(new IOException("Meta znode is null"));<a name="line.149"></a> +<span class="sourceLineNo">150</span> return;<a name="line.150"></a> +<span class="sourceLineNo">151</span> }<a name="line.151"></a> +<span class="sourceLineNo">152</span> Pair<RegionState.State, ServerName> stateAndServerName = getStateAndServerName(proto);<a name="line.152"></a> +<span class="sourceLineNo">153</span> if (stateAndServerName.getFirst() != RegionState.State.OPEN) {<a name="line.153"></a> +<span class="sourceLineNo">154</span> future.completeExceptionally(<a name="line.154"></a> +<span class="sourceLineNo">155</span> new IOException("Meta region is in state " + stateAndServerName.getFirst()));<a name="line.155"></a> +<span class="sourceLineNo">156</span> return;<a name="line.156"></a> +<span class="sourceLineNo">157</span> }<a name="line.157"></a> +<span class="sourceLineNo">158</span> locs[DEFAULT_REPLICA_ID] =<a name="line.158"></a> +<span class="sourceLineNo">159</span> new HRegionLocation(getRegionInfoForDefaultReplica(FIRST_META_REGIONINFO),<a name="line.159"></a> +<span class="sourceLineNo">160</span> stateAndServerName.getSecond());<a name="line.160"></a> +<span class="sourceLineNo">161</span> tryComplete(remaining, locs, future);<a name="line.161"></a> +<span class="sourceLineNo">162</span> });<a name="line.162"></a> +<span class="sourceLineNo">163</span> } else {<a name="line.163"></a> +<span class="sourceLineNo">164</span> getAndConvert(path, ZKAsyncRegistry::getMetaProto).whenComplete((proto, error) -> {<a name="line.164"></a> +<span class="sourceLineNo">165</span> if (future.isDone()) {<a name="line.165"></a> +<span class="sourceLineNo">166</span> return;<a name="line.166"></a> +<span class="sourceLineNo">167</span> }<a name="line.167"></a> +<span class="sourceLineNo">168</span> if (error != null) {<a name="line.168"></a> +<span class="sourceLineNo">169</span> LOG.warn("Failed to fetch " + path, error);<a name="line.169"></a> +<span class="sourceLineNo">170</span> locs[replicaId] = null;<a name="line.170"></a> +<span class="sourceLineNo">171</span> } else if (proto == null) {<a name="line.171"></a> +<span class="sourceLineNo">172</span> LOG.warn("Meta znode for replica " + replicaId + " is null");<a name="line.172"></a> +<span class="sourceLineNo">173</span> locs[replicaId] = null;<a name="line.173"></a> +<span class="sourceLineNo">174</span> } else {<a name="line.174"></a> +<span class="sourceLineNo">175</span> Pair<RegionState.State, ServerName> stateAndServerName = getStateAndServerName(proto);<a name="line.175"></a> +<span class="sourceLineNo">176</span> if (stateAndServerName.getFirst() != RegionState.State.OPEN) {<a name="line.176"></a> +<span class="sourceLineNo">177</span> LOG.warn("Meta region for replica " + replicaId + " is in state " +<a name="line.177"></a> +<span class="sourceLineNo">178</span> stateAndServerName.getFirst());<a name="line.178"></a> +<span class="sourceLineNo">179</span> locs[replicaId] = null;<a name="line.179"></a> +<span class="sourceLineNo">180</span> } else {<a name="line.180"></a> +<span class="sourceLineNo">181</span> locs[replicaId] =<a name="line.181"></a> +<span class="sourceLineNo">182</span> new HRegionLocation(getRegionInfoForReplica(FIRST_META_REGIONINFO, replicaId),<a name="line.182"></a> +<span class="sourceLineNo">183</span> stateAndServerName.getSecond());<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> tryComplete(remaining, locs, future);<a name="line.186"></a> +<span class="sourceLineNo">187</span> });<a name="line.187"></a> +<span class="sourceLineNo">188</span> }<a name="line.188"></a> +<span class="sourceLineNo">189</span> });<a name="line.189"></a> +<span class="sourceLineNo">190</span> return future;<a name="line.190"></a> +<span class="sourceLineNo">191</span> }<a name="line.191"></a> +<span class="sourceLineNo">192</span><a name="line.192"></a> +<span class="sourceLineNo">193</span> @Override<a name="line.193"></a> +<span class="sourceLineNo">194</span> public CompletableFuture<Integer> getCurrentNrHRS() {<a name="line.194"></a> +<span class="sourceLineNo">195</span> return zk.exists(znodePaths.rsZNode).thenApply(s -> s != null ? s.getNumChildren() : 0);<a name="line.195"></a> +<span class="sourceLineNo">196</span> }<a name="line.196"></a> +<span class="sourceLineNo">197</span><a name="line.197"></a> +<span class="sourceLineNo">198</span> private static ZooKeeperProtos.Master getMasterProto(byte[] data) throws IOException {<a name="line.198"></a> +<span class="sourceLineNo">199</span> if (data == null || data.length == 0) {<a name="line.199"></a> +<span class="sourceLineNo">200</span> return null;<a name="line.200"></a> +<span class="sourceLineNo">201</span> }<a name="line.201"></a> +<span class="sourceLineNo">202</span> data = removeMetaData(data);<a name="line.202"></a> +<span class="sourceLineNo">203</span> int prefixLen = lengthOfPBMagic();<a name="line.203"></a> +<span class="sourceLineNo">204</span> return ZooKeeperProtos.Master.parser().parseFrom(data, prefixLen, data.length - prefixLen);<a name="line.204"></a> +<span class="sourceLineNo">205</span> }<a name="line.205"></a> +<span class="sourceLineNo">206</span><a name="line.206"></a> +<span class="sourceLineNo">207</span> @Override<a name="line.207"></a> +<span class="sourceLineNo">208</span> public CompletableFuture<ServerName> getMasterAddress() {<a name="line.208"></a> +<span class="sourceLineNo">209</span> return getAndConvert(znodePaths.masterAddressZNode, ZKAsyncRegistry::getMasterProto)<a name="line.209"></a> +<span class="sourceLineNo">210</span> .thenApply(proto -> {<a name="line.210"></a> +<span class="sourceLineNo">211</span> if (proto == null) {<a name="line.211"></a> +<span class="sourceLineNo">212</span> return null;<a name="line.212"></a> +<span class="sourceLineNo">213</span> }<a name="line.213"></a> +<span class="sourceLineNo">214</span> HBaseProtos.ServerName snProto = proto.getMaster();<a name="line.214"></a> +<span class="sourceLineNo">215</span> return ServerName.valueOf(snProto.getHostName(), snProto.getPort(),<a name="line.215"></a> +<span class="sourceLineNo">216</span> snProto.getStartCode());<a name="line.216"></a> +<span class="sourceLineNo">217</span> });<a name="line.217"></a> +<span class="sourceLineNo">218</span> }<a name="line.218"></a> +<span class="sourceLineNo">219</span><a name="line.219"></a> +<span class="sourceLineNo">220</span> @Override<a name="line.220"></a> +<span class="sourceLineNo">221</span> public CompletableFuture<Integer> getMasterInfoPort() {<a name="line.221"></a> +<span class="sourceLineNo">222</span> return getAndConvert(znodePaths.masterAddressZNode, ZKAsyncRegistry::getMasterProto)<a name="line.222"></a> +<span class="sourceLineNo">223</span> .thenApply(proto -> proto != null ? proto.getInfoPort() : 0);<a name="line.223"></a> +<span class="sourceLineNo">224</span> }<a name="line.224"></a> +<span class="sourceLineNo">225</span><a name="line.225"></a> +<span class="sourceLineNo">226</span> @Override<a name="line.226"></a> +<span class="sourceLineNo">227</span> public void close() {<a name="line.227"></a> +<span class="sourceLineNo">228</span> zk.close();<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>
