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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.client;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import static org.apache.hadoop.hbase.client.RegionInfo.DEFAULT_REPLICA_ID;</span> |
| <span class="source-line-no">021</span><span id="line-21">import static org.apache.hadoop.hbase.client.RegionInfoBuilder.FIRST_META_REGIONINFO;</span> |
| <span class="source-line-no">022</span><span id="line-22">import static org.apache.hadoop.hbase.client.RegionReplicaUtil.getRegionInfoForDefaultReplica;</span> |
| <span class="source-line-no">023</span><span id="line-23">import static org.apache.hadoop.hbase.client.RegionReplicaUtil.getRegionInfoForReplica;</span> |
| <span class="source-line-no">024</span><span id="line-24">import static org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil.lengthOfPBMagic;</span> |
| <span class="source-line-no">025</span><span id="line-25">import static org.apache.hadoop.hbase.trace.TraceUtil.tracedFuture;</span> |
| <span class="source-line-no">026</span><span id="line-26">import static org.apache.hadoop.hbase.util.FutureUtils.addListener;</span> |
| <span class="source-line-no">027</span><span id="line-27">import static org.apache.hadoop.hbase.zookeeper.ZKMetadata.removeMetaData;</span> |
| <span class="source-line-no">028</span><span id="line-28"></span> |
| <span class="source-line-no">029</span><span id="line-29">import java.io.IOException;</span> |
| <span class="source-line-no">030</span><span id="line-30">import java.util.List;</span> |
| <span class="source-line-no">031</span><span id="line-31">import java.util.concurrent.CompletableFuture;</span> |
| <span class="source-line-no">032</span><span id="line-32">import java.util.stream.Collectors;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.commons.lang3.mutable.MutableInt;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.ClusterId;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.HBaseInterfaceAudience;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.HRegionLocation;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.apache.hadoop.hbase.RegionLocations;</span> |
| <span class="source-line-no">039</span><span id="line-39">import org.apache.hadoop.hbase.ServerName;</span> |
| <span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.exceptions.DeserializationException;</span> |
| <span class="source-line-no">041</span><span id="line-41">import org.apache.hadoop.hbase.master.RegionState;</span> |
| <span class="source-line-no">042</span><span id="line-42">import org.apache.hadoop.hbase.security.User;</span> |
| <span class="source-line-no">043</span><span id="line-43">import org.apache.hadoop.hbase.util.Pair;</span> |
| <span class="source-line-no">044</span><span id="line-44">import org.apache.hadoop.hbase.zookeeper.ReadOnlyZKClient;</span> |
| <span class="source-line-no">045</span><span id="line-45">import org.apache.hadoop.hbase.zookeeper.ZNodePaths;</span> |
| <span class="source-line-no">046</span><span id="line-46">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">047</span><span id="line-47">import org.slf4j.Logger;</span> |
| <span class="source-line-no">048</span><span id="line-48">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">049</span><span id="line-49"></span> |
| <span class="source-line-no">050</span><span id="line-50">import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos;</span> |
| <span class="source-line-no">051</span><span id="line-51">import org.apache.hadoop.hbase.shaded.protobuf.generated.ZooKeeperProtos;</span> |
| <span class="source-line-no">052</span><span id="line-52"></span> |
| <span class="source-line-no">053</span><span id="line-53">/**</span> |
| <span class="source-line-no">054</span><span id="line-54"> * Zookeeper based registry implementation.</span> |
| <span class="source-line-no">055</span><span id="line-55"> * @deprecated As of 2.6.0, replaced by {@link RpcConnectionRegistry}, which is the default</span> |
| <span class="source-line-no">056</span><span id="line-56"> * connection mechanism as of 3.0.0. Expected to be removed in 4.0.0.</span> |
| <span class="source-line-no">057</span><span id="line-57"> * @see <a href="https://issues.apache.org/jira/browse/HBASE-23324">HBASE-23324</a> and its parent</span> |
| <span class="source-line-no">058</span><span id="line-58"> * ticket for details.</span> |
| <span class="source-line-no">059</span><span id="line-59"> */</span> |
| <span class="source-line-no">060</span><span id="line-60">@Deprecated</span> |
| <span class="source-line-no">061</span><span id="line-61">@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.CONFIG)</span> |
| <span class="source-line-no">062</span><span id="line-62">class ZKConnectionRegistry implements ConnectionRegistry {</span> |
| <span class="source-line-no">063</span><span id="line-63"></span> |
| <span class="source-line-no">064</span><span id="line-64"> private static final Logger LOG = LoggerFactory.getLogger(ZKConnectionRegistry.class);</span> |
| <span class="source-line-no">065</span><span id="line-65"></span> |
| <span class="source-line-no">066</span><span id="line-66"> private static final Object WARN_LOCK = new Object();</span> |
| <span class="source-line-no">067</span><span id="line-67"> private static volatile boolean NEEDS_LOG_WARN = true;</span> |
| <span class="source-line-no">068</span><span id="line-68"></span> |
| <span class="source-line-no">069</span><span id="line-69"> private final ReadOnlyZKClient zk;</span> |
| <span class="source-line-no">070</span><span id="line-70"></span> |
| <span class="source-line-no">071</span><span id="line-71"> private final ZNodePaths znodePaths;</span> |
| <span class="source-line-no">072</span><span id="line-72"></span> |
| <span class="source-line-no">073</span><span id="line-73"> // User not used, but for rpc based registry we need it</span> |
| <span class="source-line-no">074</span><span id="line-74"> ZKConnectionRegistry(Configuration conf, User ignored) {</span> |
| <span class="source-line-no">075</span><span id="line-75"> this.znodePaths = new ZNodePaths(conf);</span> |
| <span class="source-line-no">076</span><span id="line-76"> this.zk = new ReadOnlyZKClient(conf);</span> |
| <span class="source-line-no">077</span><span id="line-77"> if (NEEDS_LOG_WARN) {</span> |
| <span class="source-line-no">078</span><span id="line-78"> synchronized (WARN_LOCK) {</span> |
| <span class="source-line-no">079</span><span id="line-79"> if (NEEDS_LOG_WARN) {</span> |
| <span class="source-line-no">080</span><span id="line-80"> LOG.warn(</span> |
| <span class="source-line-no">081</span><span id="line-81"> "ZKConnectionRegistry is deprecated. See https://hbase.apache.org/book.html#client.rpcconnectionregistry");</span> |
| <span class="source-line-no">082</span><span id="line-82"> NEEDS_LOG_WARN = false;</span> |
| <span class="source-line-no">083</span><span id="line-83"> }</span> |
| <span class="source-line-no">084</span><span id="line-84"> }</span> |
| <span class="source-line-no">085</span><span id="line-85"> }</span> |
| <span class="source-line-no">086</span><span id="line-86"> }</span> |
| <span class="source-line-no">087</span><span id="line-87"></span> |
| <span class="source-line-no">088</span><span id="line-88"> private interface Converter<T> {</span> |
| <span class="source-line-no">089</span><span id="line-89"> T convert(byte[] data) throws Exception;</span> |
| <span class="source-line-no">090</span><span id="line-90"> }</span> |
| <span class="source-line-no">091</span><span id="line-91"></span> |
| <span class="source-line-no">092</span><span id="line-92"> private <T> CompletableFuture<T> getAndConvert(String path, Converter<T> converter) {</span> |
| <span class="source-line-no">093</span><span id="line-93"> CompletableFuture<T> future = new CompletableFuture<>();</span> |
| <span class="source-line-no">094</span><span id="line-94"> addListener(zk.get(path), (data, error) -> {</span> |
| <span class="source-line-no">095</span><span id="line-95"> if (error != null) {</span> |
| <span class="source-line-no">096</span><span id="line-96"> future.completeExceptionally(error);</span> |
| <span class="source-line-no">097</span><span id="line-97"> return;</span> |
| <span class="source-line-no">098</span><span id="line-98"> }</span> |
| <span class="source-line-no">099</span><span id="line-99"> try {</span> |
| <span class="source-line-no">100</span><span id="line-100"> future.complete(converter.convert(data));</span> |
| <span class="source-line-no">101</span><span id="line-101"> } catch (Exception e) {</span> |
| <span class="source-line-no">102</span><span id="line-102"> future.completeExceptionally(e);</span> |
| <span class="source-line-no">103</span><span id="line-103"> }</span> |
| <span class="source-line-no">104</span><span id="line-104"> });</span> |
| <span class="source-line-no">105</span><span id="line-105"> return future;</span> |
| <span class="source-line-no">106</span><span id="line-106"> }</span> |
| <span class="source-line-no">107</span><span id="line-107"></span> |
| <span class="source-line-no">108</span><span id="line-108"> private static String getClusterId(byte[] data) throws DeserializationException {</span> |
| <span class="source-line-no">109</span><span id="line-109"> if (data == null || data.length == 0) {</span> |
| <span class="source-line-no">110</span><span id="line-110"> return null;</span> |
| <span class="source-line-no">111</span><span id="line-111"> }</span> |
| <span class="source-line-no">112</span><span id="line-112"> data = removeMetaData(data);</span> |
| <span class="source-line-no">113</span><span id="line-113"> return ClusterId.parseFrom(data).toString();</span> |
| <span class="source-line-no">114</span><span id="line-114"> }</span> |
| <span class="source-line-no">115</span><span id="line-115"></span> |
| <span class="source-line-no">116</span><span id="line-116"> @Override</span> |
| <span class="source-line-no">117</span><span id="line-117"> public CompletableFuture<String> getClusterId() {</span> |
| <span class="source-line-no">118</span><span id="line-118"> return tracedFuture(</span> |
| <span class="source-line-no">119</span><span id="line-119"> () -> getAndConvert(znodePaths.clusterIdZNode, ZKConnectionRegistry::getClusterId),</span> |
| <span class="source-line-no">120</span><span id="line-120"> "ZKConnectionRegistry.getClusterId");</span> |
| <span class="source-line-no">121</span><span id="line-121"> }</span> |
| <span class="source-line-no">122</span><span id="line-122"></span> |
| <span class="source-line-no">123</span><span id="line-123"> ReadOnlyZKClient getZKClient() {</span> |
| <span class="source-line-no">124</span><span id="line-124"> return zk;</span> |
| <span class="source-line-no">125</span><span id="line-125"> }</span> |
| <span class="source-line-no">126</span><span id="line-126"></span> |
| <span class="source-line-no">127</span><span id="line-127"> private static ZooKeeperProtos.MetaRegionServer getMetaProto(byte[] data) throws IOException {</span> |
| <span class="source-line-no">128</span><span id="line-128"> if (data == null || data.length == 0) {</span> |
| <span class="source-line-no">129</span><span id="line-129"> return null;</span> |
| <span class="source-line-no">130</span><span id="line-130"> }</span> |
| <span class="source-line-no">131</span><span id="line-131"> data = removeMetaData(data);</span> |
| <span class="source-line-no">132</span><span id="line-132"> int prefixLen = lengthOfPBMagic();</span> |
| <span class="source-line-no">133</span><span id="line-133"> return ZooKeeperProtos.MetaRegionServer.parser().parseFrom(data, prefixLen,</span> |
| <span class="source-line-no">134</span><span id="line-134"> data.length - prefixLen);</span> |
| <span class="source-line-no">135</span><span id="line-135"> }</span> |
| <span class="source-line-no">136</span><span id="line-136"></span> |
| <span class="source-line-no">137</span><span id="line-137"> private static void tryComplete(MutableInt remaining, HRegionLocation[] locs,</span> |
| <span class="source-line-no">138</span><span id="line-138"> CompletableFuture<RegionLocations> future) {</span> |
| <span class="source-line-no">139</span><span id="line-139"> remaining.decrement();</span> |
| <span class="source-line-no">140</span><span id="line-140"> if (remaining.intValue() > 0) {</span> |
| <span class="source-line-no">141</span><span id="line-141"> return;</span> |
| <span class="source-line-no">142</span><span id="line-142"> }</span> |
| <span class="source-line-no">143</span><span id="line-143"> future.complete(new RegionLocations(locs));</span> |
| <span class="source-line-no">144</span><span id="line-144"> }</span> |
| <span class="source-line-no">145</span><span id="line-145"></span> |
| <span class="source-line-no">146</span><span id="line-146"> private Pair<RegionState.State, ServerName></span> |
| <span class="source-line-no">147</span><span id="line-147"> getStateAndServerName(ZooKeeperProtos.MetaRegionServer proto) {</span> |
| <span class="source-line-no">148</span><span id="line-148"> RegionState.State state;</span> |
| <span class="source-line-no">149</span><span id="line-149"> if (proto.hasState()) {</span> |
| <span class="source-line-no">150</span><span id="line-150"> state = RegionState.State.convert(proto.getState());</span> |
| <span class="source-line-no">151</span><span id="line-151"> } else {</span> |
| <span class="source-line-no">152</span><span id="line-152"> state = RegionState.State.OPEN;</span> |
| <span class="source-line-no">153</span><span id="line-153"> }</span> |
| <span class="source-line-no">154</span><span id="line-154"> HBaseProtos.ServerName snProto = proto.getServer();</span> |
| <span class="source-line-no">155</span><span id="line-155"> return Pair.newPair(state,</span> |
| <span class="source-line-no">156</span><span id="line-156"> ServerName.valueOf(snProto.getHostName(), snProto.getPort(), snProto.getStartCode()));</span> |
| <span class="source-line-no">157</span><span id="line-157"> }</span> |
| <span class="source-line-no">158</span><span id="line-158"></span> |
| <span class="source-line-no">159</span><span id="line-159"> private void getMetaRegionLocation(CompletableFuture<RegionLocations> future,</span> |
| <span class="source-line-no">160</span><span id="line-160"> List<String> metaReplicaZNodes) {</span> |
| <span class="source-line-no">161</span><span id="line-161"> if (metaReplicaZNodes.isEmpty()) {</span> |
| <span class="source-line-no">162</span><span id="line-162"> future.completeExceptionally(new IOException("No meta znode available"));</span> |
| <span class="source-line-no">163</span><span id="line-163"> }</span> |
| <span class="source-line-no">164</span><span id="line-164"> HRegionLocation[] locs = new HRegionLocation[metaReplicaZNodes.size()];</span> |
| <span class="source-line-no">165</span><span id="line-165"> MutableInt remaining = new MutableInt(locs.length);</span> |
| <span class="source-line-no">166</span><span id="line-166"> for (String metaReplicaZNode : metaReplicaZNodes) {</span> |
| <span class="source-line-no">167</span><span id="line-167"> int replicaId = znodePaths.getMetaReplicaIdFromZNode(metaReplicaZNode);</span> |
| <span class="source-line-no">168</span><span id="line-168"> String path = ZNodePaths.joinZNode(znodePaths.baseZNode, metaReplicaZNode);</span> |
| <span class="source-line-no">169</span><span id="line-169"> if (replicaId == DEFAULT_REPLICA_ID) {</span> |
| <span class="source-line-no">170</span><span id="line-170"> addListener(getAndConvert(path, ZKConnectionRegistry::getMetaProto), (proto, error) -> {</span> |
| <span class="source-line-no">171</span><span id="line-171"> if (error != null) {</span> |
| <span class="source-line-no">172</span><span id="line-172"> future.completeExceptionally(error);</span> |
| <span class="source-line-no">173</span><span id="line-173"> return;</span> |
| <span class="source-line-no">174</span><span id="line-174"> }</span> |
| <span class="source-line-no">175</span><span id="line-175"> if (proto == null) {</span> |
| <span class="source-line-no">176</span><span id="line-176"> future.completeExceptionally(new IOException("Meta znode is null"));</span> |
| <span class="source-line-no">177</span><span id="line-177"> return;</span> |
| <span class="source-line-no">178</span><span id="line-178"> }</span> |
| <span class="source-line-no">179</span><span id="line-179"> Pair<RegionState.State, ServerName> stateAndServerName = getStateAndServerName(proto);</span> |
| <span class="source-line-no">180</span><span id="line-180"> if (stateAndServerName.getFirst() != RegionState.State.OPEN) {</span> |
| <span class="source-line-no">181</span><span id="line-181"> LOG.warn("Meta region is in state " + stateAndServerName.getFirst());</span> |
| <span class="source-line-no">182</span><span id="line-182"> }</span> |
| <span class="source-line-no">183</span><span id="line-183"> locs[DEFAULT_REPLICA_ID] = new HRegionLocation(</span> |
| <span class="source-line-no">184</span><span id="line-184"> getRegionInfoForDefaultReplica(FIRST_META_REGIONINFO), stateAndServerName.getSecond());</span> |
| <span class="source-line-no">185</span><span id="line-185"> tryComplete(remaining, locs, future);</span> |
| <span class="source-line-no">186</span><span id="line-186"> });</span> |
| <span class="source-line-no">187</span><span id="line-187"> } else {</span> |
| <span class="source-line-no">188</span><span id="line-188"> addListener(getAndConvert(path, ZKConnectionRegistry::getMetaProto), (proto, error) -> {</span> |
| <span class="source-line-no">189</span><span id="line-189"> if (future.isDone()) {</span> |
| <span class="source-line-no">190</span><span id="line-190"> return;</span> |
| <span class="source-line-no">191</span><span id="line-191"> }</span> |
| <span class="source-line-no">192</span><span id="line-192"> if (error != null) {</span> |
| <span class="source-line-no">193</span><span id="line-193"> LOG.warn("Failed to fetch " + path, error);</span> |
| <span class="source-line-no">194</span><span id="line-194"> locs[replicaId] = null;</span> |
| <span class="source-line-no">195</span><span id="line-195"> } else if (proto == null) {</span> |
| <span class="source-line-no">196</span><span id="line-196"> LOG.warn("Meta znode for replica " + replicaId + " is null");</span> |
| <span class="source-line-no">197</span><span id="line-197"> locs[replicaId] = null;</span> |
| <span class="source-line-no">198</span><span id="line-198"> } else {</span> |
| <span class="source-line-no">199</span><span id="line-199"> Pair<RegionState.State, ServerName> stateAndServerName = getStateAndServerName(proto);</span> |
| <span class="source-line-no">200</span><span id="line-200"> if (stateAndServerName.getFirst() != RegionState.State.OPEN) {</span> |
| <span class="source-line-no">201</span><span id="line-201"> LOG.warn("Meta region for replica " + replicaId + " is in state "</span> |
| <span class="source-line-no">202</span><span id="line-202"> + stateAndServerName.getFirst());</span> |
| <span class="source-line-no">203</span><span id="line-203"> locs[replicaId] = null;</span> |
| <span class="source-line-no">204</span><span id="line-204"> } else {</span> |
| <span class="source-line-no">205</span><span id="line-205"> locs[replicaId] =</span> |
| <span class="source-line-no">206</span><span id="line-206"> new HRegionLocation(getRegionInfoForReplica(FIRST_META_REGIONINFO, replicaId),</span> |
| <span class="source-line-no">207</span><span id="line-207"> stateAndServerName.getSecond());</span> |
| <span class="source-line-no">208</span><span id="line-208"> }</span> |
| <span class="source-line-no">209</span><span id="line-209"> }</span> |
| <span class="source-line-no">210</span><span id="line-210"> tryComplete(remaining, locs, future);</span> |
| <span class="source-line-no">211</span><span id="line-211"> });</span> |
| <span class="source-line-no">212</span><span id="line-212"> }</span> |
| <span class="source-line-no">213</span><span id="line-213"> }</span> |
| <span class="source-line-no">214</span><span id="line-214"> }</span> |
| <span class="source-line-no">215</span><span id="line-215"></span> |
| <span class="source-line-no">216</span><span id="line-216"> @Override</span> |
| <span class="source-line-no">217</span><span id="line-217"> public CompletableFuture<RegionLocations> getMetaRegionLocations() {</span> |
| <span class="source-line-no">218</span><span id="line-218"> return tracedFuture(() -> {</span> |
| <span class="source-line-no">219</span><span id="line-219"> CompletableFuture<RegionLocations> future = new CompletableFuture<>();</span> |
| <span class="source-line-no">220</span><span id="line-220"> addListener(</span> |
| <span class="source-line-no">221</span><span id="line-221"> zk.list(znodePaths.baseZNode).thenApply(children -> children.stream()</span> |
| <span class="source-line-no">222</span><span id="line-222"> .filter(c -> this.znodePaths.isMetaZNodePrefix(c)).collect(Collectors.toList())),</span> |
| <span class="source-line-no">223</span><span id="line-223"> (metaReplicaZNodes, error) -> {</span> |
| <span class="source-line-no">224</span><span id="line-224"> if (error != null) {</span> |
| <span class="source-line-no">225</span><span id="line-225"> future.completeExceptionally(error);</span> |
| <span class="source-line-no">226</span><span id="line-226"> return;</span> |
| <span class="source-line-no">227</span><span id="line-227"> }</span> |
| <span class="source-line-no">228</span><span id="line-228"> getMetaRegionLocation(future, metaReplicaZNodes);</span> |
| <span class="source-line-no">229</span><span id="line-229"> });</span> |
| <span class="source-line-no">230</span><span id="line-230"> return future;</span> |
| <span class="source-line-no">231</span><span id="line-231"> }, "ZKConnectionRegistry.getMetaRegionLocations");</span> |
| <span class="source-line-no">232</span><span id="line-232"> }</span> |
| <span class="source-line-no">233</span><span id="line-233"></span> |
| <span class="source-line-no">234</span><span id="line-234"> private static ZooKeeperProtos.Master getMasterProto(byte[] data) throws IOException {</span> |
| <span class="source-line-no">235</span><span id="line-235"> if (data == null || data.length == 0) {</span> |
| <span class="source-line-no">236</span><span id="line-236"> return null;</span> |
| <span class="source-line-no">237</span><span id="line-237"> }</span> |
| <span class="source-line-no">238</span><span id="line-238"> data = removeMetaData(data);</span> |
| <span class="source-line-no">239</span><span id="line-239"> int prefixLen = lengthOfPBMagic();</span> |
| <span class="source-line-no">240</span><span id="line-240"> return ZooKeeperProtos.Master.parser().parseFrom(data, prefixLen, data.length - prefixLen);</span> |
| <span class="source-line-no">241</span><span id="line-241"> }</span> |
| <span class="source-line-no">242</span><span id="line-242"></span> |
| <span class="source-line-no">243</span><span id="line-243"> @Override</span> |
| <span class="source-line-no">244</span><span id="line-244"> public CompletableFuture<ServerName> getActiveMaster() {</span> |
| <span class="source-line-no">245</span><span id="line-245"> return tracedFuture(</span> |
| <span class="source-line-no">246</span><span id="line-246"> () -> getAndConvert(znodePaths.masterAddressZNode, ZKConnectionRegistry::getMasterProto)</span> |
| <span class="source-line-no">247</span><span id="line-247"> .thenApply(proto -> {</span> |
| <span class="source-line-no">248</span><span id="line-248"> if (proto == null) {</span> |
| <span class="source-line-no">249</span><span id="line-249"> return null;</span> |
| <span class="source-line-no">250</span><span id="line-250"> }</span> |
| <span class="source-line-no">251</span><span id="line-251"> HBaseProtos.ServerName snProto = proto.getMaster();</span> |
| <span class="source-line-no">252</span><span id="line-252"> return ServerName.valueOf(snProto.getHostName(), snProto.getPort(),</span> |
| <span class="source-line-no">253</span><span id="line-253"> snProto.getStartCode());</span> |
| <span class="source-line-no">254</span><span id="line-254"> }),</span> |
| <span class="source-line-no">255</span><span id="line-255"> "ZKConnectionRegistry.getActiveMaster");</span> |
| <span class="source-line-no">256</span><span id="line-256"> }</span> |
| <span class="source-line-no">257</span><span id="line-257"></span> |
| <span class="source-line-no">258</span><span id="line-258"> @Override</span> |
| <span class="source-line-no">259</span><span id="line-259"> public String getConnectionString() {</span> |
| <span class="source-line-no">260</span><span id="line-260"> final String serverList = zk.getConnectString();</span> |
| <span class="source-line-no">261</span><span id="line-261"> final String baseZNode = znodePaths.baseZNode;</span> |
| <span class="source-line-no">262</span><span id="line-262"> return serverList + ":" + baseZNode;</span> |
| <span class="source-line-no">263</span><span id="line-263"> }</span> |
| <span class="source-line-no">264</span><span id="line-264"></span> |
| <span class="source-line-no">265</span><span id="line-265"> @Override</span> |
| <span class="source-line-no">266</span><span id="line-266"> public void close() {</span> |
| <span class="source-line-no">267</span><span id="line-267"> zk.close();</span> |
| <span class="source-line-no">268</span><span id="line-268"> }</span> |
| <span class="source-line-no">269</span><span id="line-269">}</span> |
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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
