http://git-wip-us.apache.org/repos/asf/hbase-site/blob/f55ebeaa/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleRpcServer.Connection.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleRpcServer.Connection.html b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleRpcServer.Connection.html deleted file mode 100644 index 7f61b54..0000000 --- a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleRpcServer.Connection.html +++ /dev/null @@ -1,1446 +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><a name="line.18"></a> -<span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.ipc;<a name="line.19"></a> -<span class="sourceLineNo">020</span><a name="line.20"></a> -<span class="sourceLineNo">021</span>import java.io.IOException;<a name="line.21"></a> -<span class="sourceLineNo">022</span>import java.io.InputStream;<a name="line.22"></a> -<span class="sourceLineNo">023</span>import java.net.BindException;<a name="line.23"></a> -<span class="sourceLineNo">024</span>import java.net.InetAddress;<a name="line.24"></a> -<span class="sourceLineNo">025</span>import java.net.InetSocketAddress;<a name="line.25"></a> -<span class="sourceLineNo">026</span>import java.net.ServerSocket;<a name="line.26"></a> -<span class="sourceLineNo">027</span>import java.net.Socket;<a name="line.27"></a> -<span class="sourceLineNo">028</span>import java.net.SocketException;<a name="line.28"></a> -<span class="sourceLineNo">029</span>import java.net.UnknownHostException;<a name="line.29"></a> -<span class="sourceLineNo">030</span>import java.nio.ByteBuffer;<a name="line.30"></a> -<span class="sourceLineNo">031</span>import java.nio.channels.CancelledKeyException;<a name="line.31"></a> -<span class="sourceLineNo">032</span>import java.nio.channels.ClosedChannelException;<a name="line.32"></a> -<span class="sourceLineNo">033</span>import java.nio.channels.GatheringByteChannel;<a name="line.33"></a> -<span class="sourceLineNo">034</span>import java.nio.channels.ReadableByteChannel;<a name="line.34"></a> -<span class="sourceLineNo">035</span>import java.nio.channels.SelectionKey;<a name="line.35"></a> -<span class="sourceLineNo">036</span>import java.nio.channels.Selector;<a name="line.36"></a> -<span class="sourceLineNo">037</span>import java.nio.channels.ServerSocketChannel;<a name="line.37"></a> -<span class="sourceLineNo">038</span>import java.nio.channels.SocketChannel;<a name="line.38"></a> -<span class="sourceLineNo">039</span>import java.util.ArrayList;<a name="line.39"></a> -<span class="sourceLineNo">040</span>import java.util.Arrays;<a name="line.40"></a> -<span class="sourceLineNo">041</span>import java.util.Collections;<a name="line.41"></a> -<span class="sourceLineNo">042</span>import java.util.Iterator;<a name="line.42"></a> -<span class="sourceLineNo">043</span>import java.util.List;<a name="line.43"></a> -<span class="sourceLineNo">044</span>import java.util.Set;<a name="line.44"></a> -<span class="sourceLineNo">045</span>import java.util.Timer;<a name="line.45"></a> -<span class="sourceLineNo">046</span>import java.util.TimerTask;<a name="line.46"></a> -<span class="sourceLineNo">047</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.47"></a> -<span class="sourceLineNo">048</span>import java.util.concurrent.ConcurrentLinkedDeque;<a name="line.48"></a> -<span class="sourceLineNo">049</span>import java.util.concurrent.ExecutorService;<a name="line.49"></a> -<span class="sourceLineNo">050</span>import java.util.concurrent.Executors;<a name="line.50"></a> -<span class="sourceLineNo">051</span>import java.util.concurrent.LinkedBlockingQueue;<a name="line.51"></a> -<span class="sourceLineNo">052</span>import java.util.concurrent.atomic.AtomicInteger;<a name="line.52"></a> -<span class="sourceLineNo">053</span>import java.util.concurrent.atomic.LongAdder;<a name="line.53"></a> -<span class="sourceLineNo">054</span>import java.util.concurrent.locks.Lock;<a name="line.54"></a> -<span class="sourceLineNo">055</span>import java.util.concurrent.locks.ReentrantLock;<a name="line.55"></a> -<span class="sourceLineNo">056</span><a name="line.56"></a> -<span class="sourceLineNo">057</span>import org.apache.hadoop.conf.Configuration;<a name="line.57"></a> -<span class="sourceLineNo">058</span>import org.apache.hadoop.hbase.CellScanner;<a name="line.58"></a> -<span class="sourceLineNo">059</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.59"></a> -<span class="sourceLineNo">060</span>import org.apache.hadoop.hbase.HBaseIOException;<a name="line.60"></a> -<span class="sourceLineNo">061</span>import org.apache.hadoop.hbase.HConstants;<a name="line.61"></a> -<span class="sourceLineNo">062</span>import org.apache.hadoop.hbase.Server;<a name="line.62"></a> -<span class="sourceLineNo">063</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.63"></a> -<span class="sourceLineNo">064</span>import org.apache.hadoop.hbase.classification.InterfaceStability;<a name="line.64"></a> -<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.client.VersionInfoUtil;<a name="line.65"></a> -<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.exceptions.RequestTooBigException;<a name="line.66"></a> -<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.monitoring.MonitoredRPCHandler;<a name="line.67"></a> -<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.nio.ByteBuff;<a name="line.68"></a> -<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.nio.SingleByteBuff;<a name="line.69"></a> -<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.security.AccessDeniedException;<a name="line.70"></a> -<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.security.AuthMethod;<a name="line.71"></a> -<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.security.HBasePolicyProvider;<a name="line.72"></a> -<span class="sourceLineNo">073</span>import org.apache.hadoop.hbase.security.SaslStatus;<a name="line.73"></a> -<span class="sourceLineNo">074</span>import org.apache.hadoop.hbase.security.SaslUtil;<a name="line.74"></a> -<span class="sourceLineNo">075</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.BlockingService;<a name="line.75"></a> -<span class="sourceLineNo">076</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.CodedInputStream;<a name="line.76"></a> -<span class="sourceLineNo">077</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.MethodDescriptor;<a name="line.77"></a> -<span class="sourceLineNo">078</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Message;<a name="line.78"></a> -<span class="sourceLineNo">079</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.79"></a> -<span class="sourceLineNo">080</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.RequestHeader;<a name="line.80"></a> -<span class="sourceLineNo">081</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.81"></a> -<span class="sourceLineNo">082</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.82"></a> -<span class="sourceLineNo">083</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.83"></a> -<span class="sourceLineNo">084</span>import org.apache.hadoop.io.IOUtils;<a name="line.84"></a> -<span class="sourceLineNo">085</span>import org.apache.hadoop.io.IntWritable;<a name="line.85"></a> -<span class="sourceLineNo">086</span>import org.apache.hadoop.security.authorize.ServiceAuthorizationManager;<a name="line.86"></a> -<span class="sourceLineNo">087</span>import org.apache.hadoop.util.StringUtils;<a name="line.87"></a> -<span class="sourceLineNo">088</span>import org.apache.htrace.TraceInfo;<a name="line.88"></a> -<span class="sourceLineNo">089</span><a name="line.89"></a> -<span class="sourceLineNo">090</span>import com.google.common.util.concurrent.ThreadFactoryBuilder;<a name="line.90"></a> -<span class="sourceLineNo">091</span><a name="line.91"></a> -<span class="sourceLineNo">092</span>/**<a name="line.92"></a> -<span class="sourceLineNo">093</span> * The RPC server with native java NIO implementation deriving from Hadoop to<a name="line.93"></a> -<span class="sourceLineNo">094</span> * host protobuf described Services. It's the original one before HBASE-17262,<a name="line.94"></a> -<span class="sourceLineNo">095</span> * and the default RPC server for now.<a name="line.95"></a> -<span class="sourceLineNo">096</span> *<a name="line.96"></a> -<span class="sourceLineNo">097</span> * An RpcServer instance has a Listener that hosts the socket. Listener has fixed number<a name="line.97"></a> -<span class="sourceLineNo">098</span> * of Readers in an ExecutorPool, 10 by default. The Listener does an accept and then<a name="line.98"></a> -<span class="sourceLineNo">099</span> * round robin a Reader is chosen to do the read. The reader is registered on Selector. Read does<a name="line.99"></a> -<span class="sourceLineNo">100</span> * total read off the channel and the parse from which it makes a Call. The call is wrapped in a<a name="line.100"></a> -<span class="sourceLineNo">101</span> * CallRunner and passed to the scheduler to be run. Reader goes back to see if more to be done<a name="line.101"></a> -<span class="sourceLineNo">102</span> * and loops till done.<a name="line.102"></a> -<span class="sourceLineNo">103</span> *<a name="line.103"></a> -<span class="sourceLineNo">104</span> * <p>Scheduler can be variously implemented but default simple scheduler has handlers to which it<a name="line.104"></a> -<span class="sourceLineNo">105</span> * has given the queues into which calls (i.e. CallRunner instances) are inserted. Handlers run<a name="line.105"></a> -<span class="sourceLineNo">106</span> * taking from the queue. They run the CallRunner#run method on each item gotten from queue<a name="line.106"></a> -<span class="sourceLineNo">107</span> * and keep taking while the server is up.<a name="line.107"></a> -<span class="sourceLineNo">108</span> *<a name="line.108"></a> -<span class="sourceLineNo">109</span> * CallRunner#run executes the call. When done, asks the included Call to put itself on new<a name="line.109"></a> -<span class="sourceLineNo">110</span> * queue for Responder to pull from and return result to client.<a name="line.110"></a> -<span class="sourceLineNo">111</span> *<a name="line.111"></a> -<span class="sourceLineNo">112</span> * @see BlockingRpcClient<a name="line.112"></a> -<span class="sourceLineNo">113</span> */<a name="line.113"></a> -<span class="sourceLineNo">114</span>@InterfaceAudience.Private<a name="line.114"></a> -<span class="sourceLineNo">115</span>@InterfaceStability.Evolving<a name="line.115"></a> -<span class="sourceLineNo">116</span>public class SimpleRpcServer extends RpcServer {<a name="line.116"></a> -<span class="sourceLineNo">117</span><a name="line.117"></a> -<span class="sourceLineNo">118</span> protected int port; // port we listen on<a name="line.118"></a> -<span class="sourceLineNo">119</span> protected InetSocketAddress address; // inet address we listen on<a name="line.119"></a> -<span class="sourceLineNo">120</span> private int readThreads; // number of read threads<a name="line.120"></a> -<span class="sourceLineNo">121</span><a name="line.121"></a> -<span class="sourceLineNo">122</span> protected int socketSendBufferSize;<a name="line.122"></a> -<span class="sourceLineNo">123</span> protected final long purgeTimeout; // in milliseconds<a name="line.123"></a> -<span class="sourceLineNo">124</span><a name="line.124"></a> -<span class="sourceLineNo">125</span> // maintains the set of client connections and handles idle timeouts<a name="line.125"></a> -<span class="sourceLineNo">126</span> private ConnectionManager connectionManager;<a name="line.126"></a> -<span class="sourceLineNo">127</span> private Listener listener = null;<a name="line.127"></a> -<span class="sourceLineNo">128</span> protected Responder responder = null;<a name="line.128"></a> -<span class="sourceLineNo">129</span><a name="line.129"></a> -<span class="sourceLineNo">130</span> /** Listens on the socket. Creates jobs for the handler threads*/<a name="line.130"></a> -<span class="sourceLineNo">131</span> private class Listener extends Thread {<a name="line.131"></a> -<span class="sourceLineNo">132</span><a name="line.132"></a> -<span class="sourceLineNo">133</span> private ServerSocketChannel acceptChannel = null; //the accept channel<a name="line.133"></a> -<span class="sourceLineNo">134</span> private Selector selector = null; //the selector that we use for the server<a name="line.134"></a> -<span class="sourceLineNo">135</span> private Reader[] readers = null;<a name="line.135"></a> -<span class="sourceLineNo">136</span> private int currentReader = 0;<a name="line.136"></a> -<span class="sourceLineNo">137</span> private final int readerPendingConnectionQueueLength;<a name="line.137"></a> -<span class="sourceLineNo">138</span><a name="line.138"></a> -<span class="sourceLineNo">139</span> private ExecutorService readPool;<a name="line.139"></a> -<span class="sourceLineNo">140</span><a name="line.140"></a> -<span class="sourceLineNo">141</span> public Listener(final String name) throws IOException {<a name="line.141"></a> -<span class="sourceLineNo">142</span> super(name);<a name="line.142"></a> -<span class="sourceLineNo">143</span> // The backlog of requests that we will have the serversocket carry.<a name="line.143"></a> -<span class="sourceLineNo">144</span> int backlogLength = conf.getInt("hbase.ipc.server.listen.queue.size", 128);<a name="line.144"></a> -<span class="sourceLineNo">145</span> readerPendingConnectionQueueLength =<a name="line.145"></a> -<span class="sourceLineNo">146</span> conf.getInt("hbase.ipc.server.read.connection-queue.size", 100);<a name="line.146"></a> -<span class="sourceLineNo">147</span> // Create a new server socket and set to non blocking mode<a name="line.147"></a> -<span class="sourceLineNo">148</span> acceptChannel = ServerSocketChannel.open();<a name="line.148"></a> -<span class="sourceLineNo">149</span> acceptChannel.configureBlocking(false);<a name="line.149"></a> -<span class="sourceLineNo">150</span><a name="line.150"></a> -<span class="sourceLineNo">151</span> // Bind the server socket to the binding addrees (can be different from the default interface)<a name="line.151"></a> -<span class="sourceLineNo">152</span> bind(acceptChannel.socket(), bindAddress, backlogLength);<a name="line.152"></a> -<span class="sourceLineNo">153</span> port = acceptChannel.socket().getLocalPort(); //Could be an ephemeral port<a name="line.153"></a> -<span class="sourceLineNo">154</span> address = (InetSocketAddress)acceptChannel.socket().getLocalSocketAddress();<a name="line.154"></a> -<span class="sourceLineNo">155</span> // create a selector;<a name="line.155"></a> -<span class="sourceLineNo">156</span> selector = Selector.open();<a name="line.156"></a> -<span class="sourceLineNo">157</span><a name="line.157"></a> -<span class="sourceLineNo">158</span> readers = new Reader[readThreads];<a name="line.158"></a> -<span class="sourceLineNo">159</span> // Why this executor thing? Why not like hadoop just start up all the threads? I suppose it<a name="line.159"></a> -<span class="sourceLineNo">160</span> // has an advantage in that it is easy to shutdown the pool.<a name="line.160"></a> -<span class="sourceLineNo">161</span> readPool = Executors.newFixedThreadPool(readThreads,<a name="line.161"></a> -<span class="sourceLineNo">162</span> new ThreadFactoryBuilder().setNameFormat(<a name="line.162"></a> -<span class="sourceLineNo">163</span> "RpcServer.reader=%d,bindAddress=" + bindAddress.getHostName() +<a name="line.163"></a> -<span class="sourceLineNo">164</span> ",port=" + port).setDaemon(true)<a name="line.164"></a> -<span class="sourceLineNo">165</span> .setUncaughtExceptionHandler(Threads.LOGGING_EXCEPTION_HANDLER).build());<a name="line.165"></a> -<span class="sourceLineNo">166</span> for (int i = 0; i < readThreads; ++i) {<a name="line.166"></a> -<span class="sourceLineNo">167</span> Reader reader = new Reader();<a name="line.167"></a> -<span class="sourceLineNo">168</span> readers[i] = reader;<a name="line.168"></a> -<span class="sourceLineNo">169</span> readPool.execute(reader);<a name="line.169"></a> -<span class="sourceLineNo">170</span> }<a name="line.170"></a> -<span class="sourceLineNo">171</span> LOG.info(getName() + ": started " + readThreads + " reader(s) listening on port=" + port);<a name="line.171"></a> -<span class="sourceLineNo">172</span><a name="line.172"></a> -<span class="sourceLineNo">173</span> // Register accepts on the server socket with the selector.<a name="line.173"></a> -<span class="sourceLineNo">174</span> acceptChannel.register(selector, SelectionKey.OP_ACCEPT);<a name="line.174"></a> -<span class="sourceLineNo">175</span> this.setName("RpcServer.listener,port=" + port);<a name="line.175"></a> -<span class="sourceLineNo">176</span> this.setDaemon(true);<a name="line.176"></a> -<span class="sourceLineNo">177</span> }<a name="line.177"></a> -<span class="sourceLineNo">178</span><a name="line.178"></a> -<span class="sourceLineNo">179</span><a name="line.179"></a> -<span class="sourceLineNo">180</span> private class Reader implements Runnable {<a name="line.180"></a> -<span class="sourceLineNo">181</span> final private LinkedBlockingQueue<Connection> pendingConnections;<a name="line.181"></a> -<span class="sourceLineNo">182</span> private final Selector readSelector;<a name="line.182"></a> -<span class="sourceLineNo">183</span><a name="line.183"></a> -<span class="sourceLineNo">184</span> Reader() throws IOException {<a name="line.184"></a> -<span class="sourceLineNo">185</span> this.pendingConnections = new LinkedBlockingQueue<>(readerPendingConnectionQueueLength);<a name="line.185"></a> -<span class="sourceLineNo">186</span> this.readSelector = Selector.open();<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> @Override<a name="line.189"></a> -<span class="sourceLineNo">190</span> public void run() {<a name="line.190"></a> -<span class="sourceLineNo">191</span> try {<a name="line.191"></a> -<span class="sourceLineNo">192</span> doRunLoop();<a name="line.192"></a> -<span class="sourceLineNo">193</span> } finally {<a name="line.193"></a> -<span class="sourceLineNo">194</span> try {<a name="line.194"></a> -<span class="sourceLineNo">195</span> readSelector.close();<a name="line.195"></a> -<span class="sourceLineNo">196</span> } catch (IOException ioe) {<a name="line.196"></a> -<span class="sourceLineNo">197</span> LOG.error(getName() + ": error closing read selector in " + getName(), ioe);<a name="line.197"></a> -<span class="sourceLineNo">198</span> }<a name="line.198"></a> -<span class="sourceLineNo">199</span> }<a name="line.199"></a> -<span class="sourceLineNo">200</span> }<a name="line.200"></a> -<span class="sourceLineNo">201</span><a name="line.201"></a> -<span class="sourceLineNo">202</span> private synchronized void doRunLoop() {<a name="line.202"></a> -<span class="sourceLineNo">203</span> while (running) {<a name="line.203"></a> -<span class="sourceLineNo">204</span> try {<a name="line.204"></a> -<span class="sourceLineNo">205</span> // Consume as many connections as currently queued to avoid<a name="line.205"></a> -<span class="sourceLineNo">206</span> // unbridled acceptance of connections that starves the select<a name="line.206"></a> -<span class="sourceLineNo">207</span> int size = pendingConnections.size();<a name="line.207"></a> -<span class="sourceLineNo">208</span> for (int i=size; i>0; i--) {<a name="line.208"></a> -<span class="sourceLineNo">209</span> Connection conn = pendingConnections.take();<a name="line.209"></a> -<span class="sourceLineNo">210</span> conn.channel.register(readSelector, SelectionKey.OP_READ, conn);<a name="line.210"></a> -<span class="sourceLineNo">211</span> }<a name="line.211"></a> -<span class="sourceLineNo">212</span> readSelector.select();<a name="line.212"></a> -<span class="sourceLineNo">213</span> Iterator<SelectionKey> iter = readSelector.selectedKeys().iterator();<a name="line.213"></a> -<span class="sourceLineNo">214</span> while (iter.hasNext()) {<a name="line.214"></a> -<span class="sourceLineNo">215</span> SelectionKey key = iter.next();<a name="line.215"></a> -<span class="sourceLineNo">216</span> iter.remove();<a name="line.216"></a> -<span class="sourceLineNo">217</span> if (key.isValid()) {<a name="line.217"></a> -<span class="sourceLineNo">218</span> if (key.isReadable()) {<a name="line.218"></a> -<span class="sourceLineNo">219</span> doRead(key);<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> key = null;<a name="line.222"></a> -<span class="sourceLineNo">223</span> }<a name="line.223"></a> -<span class="sourceLineNo">224</span> } catch (InterruptedException e) {<a name="line.224"></a> -<span class="sourceLineNo">225</span> if (running) { // unexpected -- log it<a name="line.225"></a> -<span class="sourceLineNo">226</span> LOG.info(Thread.currentThread().getName() + " unexpectedly interrupted", e);<a name="line.226"></a> -<span class="sourceLineNo">227</span> }<a name="line.227"></a> -<span class="sourceLineNo">228</span> } catch (CancelledKeyException e) {<a name="line.228"></a> -<span class="sourceLineNo">229</span> LOG.error(getName() + ": CancelledKeyException in Reader", e);<a name="line.229"></a> -<span class="sourceLineNo">230</span> } catch (IOException ex) {<a name="line.230"></a> -<span class="sourceLineNo">231</span> LOG.info(getName() + ": IOException in Reader", ex);<a name="line.231"></a> -<span class="sourceLineNo">232</span> }<a name="line.232"></a> -<span class="sourceLineNo">233</span> }<a name="line.233"></a> -<span class="sourceLineNo">234</span> }<a name="line.234"></a> -<span class="sourceLineNo">235</span><a name="line.235"></a> -<span class="sourceLineNo">236</span> /**<a name="line.236"></a> -<span class="sourceLineNo">237</span> * Updating the readSelector while it's being used is not thread-safe,<a name="line.237"></a> -<span class="sourceLineNo">238</span> * so the connection must be queued. 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justification="selector access is not synchronized; seems fine but concerned changing " +<a name="line.249"></a> -<span class="sourceLineNo">250</span> "it will have per impact")<a name="line.250"></a> -<span class="sourceLineNo">251</span> public void run() {<a name="line.251"></a> -<span class="sourceLineNo">252</span> LOG.info(getName() + ": starting");<a name="line.252"></a> -<span class="sourceLineNo">253</span> connectionManager.startIdleScan();<a name="line.253"></a> -<span class="sourceLineNo">254</span> while (running) {<a name="line.254"></a> -<span class="sourceLineNo">255</span> SelectionKey key = null;<a name="line.255"></a> -<span class="sourceLineNo">256</span> try {<a name="line.256"></a> -<span class="sourceLineNo">257</span> selector.select(); // FindBugs IS2_INCONSISTENT_SYNC<a name="line.257"></a> -<span class="sourceLineNo">258</span> Iterator<SelectionKey> iter = selector.selectedKeys().iterator();<a name="line.258"></a> -<span class="sourceLineNo">259</span> 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name="line.678"></a> -<span class="sourceLineNo">679</span><a name="line.679"></a> -<span class="sourceLineNo">680</span> /** Reads calls from a connection and queues them for handling. */<a name="line.680"></a> -<span class="sourceLineNo">681</span> @edu.umd.cs.findbugs.annotations.SuppressWarnings(<a name="line.681"></a> -<span class="sourceLineNo">682</span> value="VO_VOLATILE_INCREMENT",<a name="line.682"></a> -<span class="sourceLineNo">683</span> justification="False positive according to http://sourceforge.net/p/findbugs/bugs/1032/";)<a name="line.683"></a> -<span class="sourceLineNo">684</span> public class Connection extends RpcServer.Connection {<a name="line.684"></a> -<span class="sourceLineNo">685</span><a name="line.685"></a> -<span class="sourceLineNo">686</span> protected SocketChannel channel;<a name="line.686"></a> -<span class="sourceLineNo">687</span> private ByteBuff data;<a name="line.687"></a> -<span class="sourceLineNo">688</span> private ByteBuffer 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lastContact) {<a name="line.727"></a> -<span class="sourceLineNo">728</span> this.lastContact = lastContact;<a name="line.728"></a> -<span class="sourceLineNo">729</span> }<a name="line.729"></a> -<span class="sourceLineNo">730</span><a name="line.730"></a> -<span class="sourceLineNo">731</span> public long getLastContact() {<a name="line.731"></a> -<span class="sourceLineNo">732</span> return lastContact;<a name="line.732"></a> -<span class="sourceLineNo">733</span> }<a name="line.733"></a> -<span class="sourceLineNo">734</span><a name="line.734"></a> -<span class="sourceLineNo">735</span> /* Return true if the connection has no outstanding rpc */<a name="line.735"></a> -<span class="sourceLineNo">736</span> private boolean isIdle() {<a name="line.736"></a> -<span class="sourceLineNo">737</span> return rpcCount.sum() == 0;<a name="line.737"></a> -<span class="sourceLineNo">738</span> }<a name="line.738"></a> -<span class="sourceLineNo">739</span><a name="line.739"></a> -<span class="sourceLineNo">740</span> /* Decrement the outstanding RPC count */<a name="line.740"></a> -<span class="sourceLineNo">741</span> protected void decRpcCount() {<a name="line.741"></a> -<span class="sourceLineNo">742</span> rpcCount.decrement();<a name="line.742"></a> -<span class="sourceLineNo">743</span> }<a name="line.743"></a> -<span class="sourceLineNo">744</span><a name="line.744"></a> -<span class="sourceLineNo">745</span> /* Increment the outstanding RPC count */<a name="line.745"></a> -<span class="sourceLineNo">746</span> protected void incRpcCount() {<a name="line.746"></a> -<span class="sourceLineNo">747</span> rpcCount.increment();<a name="line.747"></a> -<span class="sourceLineNo">748</span> }<a name="line.748"></a> -<span class="sourceLineNo">749</span><a name="line.749"></a> -<span class="sourceLineNo">750</span> private int readPreamble() throws IOException {<a name="line.750"></a> -<span class="sourceLineNo">751</span> int count;<a name="line.751"></a> -<span class="sourceLineNo">752</span> // Check for 'HBas' magic.<a name="line.752"></a> -<span class="sourceLineNo">753</span> this.dataLengthBuffer.flip();<a name="line.753"></a> -<span class="sourceLineNo">754</span> if (!Arrays.equals(HConstants.RPC_HEADER, dataLengthBuffer.array())) {<a name="line.754"></a> -<span class="sourceLineNo">755</span> return doBadPreambleHandling("Expected HEADER=" +<a name="line.755"></a> -<span class="sourceLineNo">756</span> Bytes.toStringBinary(HConstants.RPC_HEADER) +<a name="line.756"></a> -<span class="sourceLineNo">757</span> " but received HEADER=" + Bytes.toStringBinary(dataLengthBuffer.array()) +<a name="line.757"></a> -<span class="sourceLineNo">758</span> " from " + toString());<a name="line.758"></a> -<span class="sourceLineNo">759</span> }<a name="line.759"></a> -<span class="sourceLineNo">760</span> // Now read the next two bytes, the version and the auth to use.<a name="line.760"></a> -<span class="sourceLineNo">761</span> ByteBuffer versionAndAuthBytes = ByteBuffer.allocate(2);<a name="line.761"></a> -<span class="sourceLineNo">762</span> count = channelRead(channel, versionAndAuthBytes);<a name="line.762"></a> -<span class="sourceLineNo">763</span> if (count < 0 || versionAndAuthBytes.remaining() > 0) {<a name="line.763"></a> -<span class="sourceLineNo">764</span> return count;<a name="line.764"></a> -<span class="sourceLineNo">765</span> }<a name="line.765"></a> -<span class="sourceLineNo">766</span> int version = versionAndAuthBytes.get(0);<a name="line.766"></a> -<span class="sourceLineNo">767</span> byte authbyte = versionAndAuthBytes.get(1);<a name="line.767"></a> -<span class="sourceLineNo">768</span> this.authMethod = AuthMethod.valueOf(authbyte);<a name="line.768"></a> -<span class="sourceLineNo">769</span> if (version != CURRENT_VERSION) {<a name="line.769"></a> -<span class="sourceLineNo">770</span> String msg = getFatalConnectionString(version, authbyte);<a name="line.770"></a> -<span class="sourceLineNo">771</span> return doBadPreambleHandling(msg, new WrongVersionException(msg));<a name="line.771"></a> -<span class="sourceLineNo">772</span> }<a name="line.772"></a> -<span class="sourceLineNo">773</span> if (authMethod == null) {<a name="line.773"></a> -<span class="sourceLineNo">774</span> String msg = getFatalConnectionString(version, authbyte);<a name="line.774"></a> -<span class="sourceLineNo">775</span> return doBadPreambleHandling(msg, new BadAuthException(msg));<a name="line.775"></a> -<span class="sourceLineNo">776</span> }<a name="line.776"></a> -<span class="sourceLineNo">777</span> if (isSecurityEnabled && authMethod == AuthMethod.SIMPLE) {<a name="line.777"></a> -<span class="sourceLineNo">778</span> if (allowFallbackToSimpleAuth) {<a name="line.778"></a> -<span class="sourceLineNo">779</span> metrics.authenticationFallback();<a name="line.779"></a> -<span class="sourceLineNo">780</span> authenticatedWithFallback = true;<a name="line.780"></a> -<span class="sourceLineNo">781</span> } else {<a name="line.781"></a> -<span class="sourceLineNo">782</span> AccessDeniedException ae = new AccessDeniedException("Authentication is required");<a name="line.782"></a> -<span class="sourceLineNo">783</span> setupResponse(authFailedResponse, authFailedCall, ae, ae.getMessage());<a name="line.783"></a> -<span class="sourceLineNo">784</span> authFailedCall.sendResponseIfReady();<a name="line.784"></a> -<span class="sourceLineNo">785</span> throw ae;<a name="line.785"></a> -<span class="sourceLineNo">786</span> }<a name="line.786"></a> -<span class="sourceLineNo">787</span> }<a name="line.787"></a> -<span class="sourceLineNo">788</span> if (!isSecurityEnabled && authMethod != AuthMethod.SIMPLE) {<a name="line.788"></a> -<span class="sourceLineNo">789</span> doRawSaslReply(SaslStatus.SUCCESS, new IntWritable(<a name="line.789"></a> -<span class="sourceLineNo">790</span> SaslUtil.SWITCH_TO_SIMPLE_AUTH), null, null);<a name="line.790"></a> -<span class="sourceLineNo">791</span> authMethod = AuthMethod.SIMPLE;<a name="line.791"></a> -<span class="sourceLineNo">792</span> // client has already sent the initial Sasl message and we<a name="line.792"></a> -<span class="sourceLineNo">793</span> // should ignore it. Both client and server should fall back<a name="line.793"></a> -<span class="sourceLineNo">794</span> // to simple auth from now on.<a name="line.794"></a> -<span class="sourceLineNo">795</span> skipInitialSaslHandshake = true;<a name="line.795"></a> -<span class="sourceLineNo">796</span> }<a name="line.796"></a> -<span class="sourceLineNo">797</span> if (authMethod != AuthMethod.SIMPLE) {<a name="line.797"></a> -<span class="sourceLineNo">798</span> useSasl = true;<a name="line.798"></a> -<span class="sourceLineNo">799</span> }<a name="line.799"></a> -<span class="sourceLineNo">800</span><a name="line.800"></a> -<span class="sourceLineNo">801</span> dataLengthBuffer.clear();<a name="line.801"></a> -<span class="sourceLineNo">802</span> connectionPreambleRead = true;<a name="line.802"></a> -<span class="sourceLineNo">803</span> return count;<a name="line.803"></a> -<span class="sourceLineNo">804</span> }<a name="line.804"></a> -<span class="sourceLineNo">805</span><a name="line.805"></a> -<span class="sourceLineNo">806</span> private int read4Bytes() throws IOException {<a name="line.806"></a> -<span class="sourceLineNo">807</span> if (this.dataLengthBuffer.remaining() > 0) {<a name="line.807"></a> -<span class="sourceLineNo">808</span> return channelRead(channel, this.dataLengthBuffer);<a name="line.808"></a> -<span class="sourceLineNo">809</span> } else {<a name="line.809"></a> -<span class="sourceLineNo">810</span> return 0;<a name="line.810"></a> -<span class="sourceLineNo">811</span> }<a name="line.811"></a> -<span class="sourceLineNo">812</span> }<a name="line.812"></a> -<span class="sourceLineNo">813</span><a name="line.813"></a> -<span class="sourceLineNo">814</span> /**<a name="line.814"></a> -<span class="sourceLineNo">815</span> * Read off the wire. If there is not enough data to read, update the connection state with<a name="line.815"></a> -<span class="sourceLineNo">816</span> * what we have and returns.<a name="line.816"></a> -<span class="sourceLineNo">817</span> * @return Returns -1 if failure (and caller will close connection), else zero or more.<a name="line.817"></a> -<span class="sourceLineNo">818</span> * @throws IOException<a name="line.818"></a> -<span class="sourceLineNo">819</span> * @throws InterruptedException<a name="line.819"></a> -<span class="sourceLineNo">820</span> */<a name="line.820"></a> -<span class="sourceLineNo">821</span> public int readAndProcess() throws IOException, InterruptedException {<a name="line.821"></a> -<span class="sourceLineNo">822</span> // Try and read in an int. If new connection, the int will hold the 'HBas' HEADER. If it<a name="line.822"></a> -<span class="sourceLineNo">823</span> // does, read in the rest of the connection preamble, the version and the auth method.<a name="line.823"></a> -<span class="sourceLineNo">824</span> // Else it will be length of the data to read (or -1 if a ping). 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It is either the connection header<a name="line.844"></a> -<span class="sourceLineNo">845</span> // or it is a request.<a name="line.845"></a> -<span class="sourceLineNo">846</span> if (data == null) {<a name="line.846"></a> -<span class="sourceLineNo">847</span> dataLengthBuffer.flip();<a name="line.847"></a> -<span class="sourceLineNo">848</span> int dataLength = dataLengthBuffer.getInt();<a name="line.848"></a> -<span class="sourceLineNo">849</span> if (dataLength == RpcClient.PING_CALL_ID) {<a name="line.849"></a> -<span class="sourceLineNo">850</span> if (!useWrap) { //covers the !useSasl too<a name="line.850"></a> -<span class="sourceLineNo">851</span> dataLengthBuffer.clear();<a name="line.851"></a> -<span class="sourceLineNo">852</span> return 0; //ping message<a name="line.852"></a> -<span class="sourceLineNo">853</span> }<a name="line.853"></a> -<span class="sourceLineNo">854</span> }<a name="line.854"></a> -<span class="sourceLineNo">855</span> if (dataLength < 0) { // A data length of zero is legal.<a name="line.855"></a> -<span class="sourceLineNo">856</span> throw new DoNotRetryIOException("Unexpected data length "<a name="line.856"></a> -<span class="sourceLineNo">857</span> + dataLength + "!! from " + getHostAddress());<a name="line.857"></a> -<span class="sourceLineNo">858</span> }<a name="line.858"></a> -<span class="sourceLineNo">859</span><a name="line.859"></a> -<span class="sourceLineNo">860</span> if (dataLength > maxRequestSize) {<a name="line.860"></a> -<span class="sourceLineNo">861</span> String msg = "RPC data length of " + dataLength + " received from "<a name="line.861"></a> -<span class="sourceLineNo">862</span> + getHostAddress() + " is greater than max allowed "<a name="line.862"></a> -<span class="sourceLineNo">863</span> + maxRequestSize + ". Set \"" + MAX_REQUEST_SIZE<a name="line.863"></a> -<span class="sourceLineNo">864</span> + "\" on server to override this limit (not recommended)";<a name="line.864"></a> -<span class="sourceLineNo">865</span> LOG.warn(msg);<a name="line.865"></a> -<span class="sourceLineNo">866</span><a name="line.866"></a> -<span class="sourceLineNo">867</span> if (connectionHeaderRead && connectionPreambleRead) {<a name="line.867"></a> -<span class="sourceLineNo">868</span> incRpcCount();<a name="line.868"></a> -<span class="sourceLineNo">869</span> // Construct InputStream for the non-blocking SocketChannel<a name="line.869"></a> -<span class="sourceLineNo">870</span> // We need the InputStream because we want to read only the request header<a name="line.870"></a> -<span class="sourceLineNo">871</span> // instead of the whole rpc.<a name="line.871"></a> -<span class="sourceLineNo">872</span> ByteBuffer buf = ByteBuffer.allocate(1);<a name="line.872"></a> -<span class="sourceLineNo">873</span> InputStream is = new InputStream() {<a name="line.873"></a> -<span class="sourceLineNo">874</span> @Override<a name="line.874"></a> -<span class="sourceLineNo">875</span> public int read() throws IOException {<a name="line.875"></a> -<span class="sourceLineNo">876</span> channelRead(channel, buf);<a name="line.876"></a> -<span class="sourceLineNo">877</span> buf.flip();<a name="line.877"></a> -<span class="sourceLineNo">878</span> int x = buf.get();<a name="line.878"></a> -<span class="sourceLineNo">879</span> buf.flip();<a name="line.879"></a> -<span class="sourceLineNo">880</span> return x;<a name="line.880"></a> -<span class="sourceLineNo">881</span> }<a name="line.881"></a> -<span class="sourceLineNo">882</span> };<a name="line.882"></a> -<span class="sourceLineNo">883</span> CodedInputStream cis = CodedInputStream.newInstance(is);<a name="line.883"></a> -<span class="sourceLineNo">884</span> int headerSize = cis.readRawVarint32();<a name="line.884"></a> -<span class="sourceLineNo">885</span> Message.Builder builder = RequestHeader.newBuilder();<a name="line.885"></a> -<span class="sourceLineNo">886</span> ProtobufUtil.mergeFrom(builder, cis, headerSize);<a name="line.886"></a> -<span class="sourceLineNo">887</span> RequestHeader header = (RequestHeader) builder.build();<a name="line.887"></a> -<span class="sourceLineNo">888</span><a name="line.888"></a> -<span class="sourceLineNo">889</span> // Notify the client about the offending request<a name="line.889"></a> -<span class="sourceLineNo">890</span> SimpleServerCall reqTooBig = new SimpleServerCall(header.getCallId(), this.service,<a name="line.890"></a> -<span class="sourceLineNo">891</span> null, null, null, null, this, 0, null, this.addr, System.currentTimeMillis(), 0,<a name="line.891"></a> -<span class="sourceLineNo">892</span> reservoir, cellBlockBuilder, null, responder);<a name="line.892"></a> -<span class="sourceLineNo">893</span> metrics.exception(REQUEST_TOO_BIG_EXCEPTION);<a name="line.893"></a> -<span class="sourceLineNo">894</span> // Make sure the client recognizes the underlying exception<a name="line.894"></a> -<span class="
<TRUNCATED>
