http://git-wip-us.apache.org/repos/asf/hbase-site/blob/f55ebeaa/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleRpcServerResponder.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleRpcServerResponder.html b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleRpcServerResponder.html new file mode 100644 index 0000000..e79bf23 --- /dev/null +++ b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleRpcServerResponder.html @@ -0,0 +1,388 @@ +<!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.ipc;<a name="line.18"></a> +<span class="sourceLineNo">019</span><a name="line.19"></a> +<span class="sourceLineNo">020</span>import java.io.IOException;<a name="line.20"></a> +<span class="sourceLineNo">021</span>import java.nio.channels.CancelledKeyException;<a name="line.21"></a> +<span class="sourceLineNo">022</span>import java.nio.channels.ClosedChannelException;<a name="line.22"></a> +<span class="sourceLineNo">023</span>import java.nio.channels.SelectionKey;<a name="line.23"></a> +<span class="sourceLineNo">024</span>import java.nio.channels.Selector;<a name="line.24"></a> +<span class="sourceLineNo">025</span>import java.util.ArrayList;<a name="line.25"></a> +<span class="sourceLineNo">026</span>import java.util.Collections;<a name="line.26"></a> +<span class="sourceLineNo">027</span>import java.util.Iterator;<a name="line.27"></a> +<span class="sourceLineNo">028</span>import java.util.Set;<a name="line.28"></a> +<span class="sourceLineNo">029</span>import java.util.concurrent.ConcurrentHashMap;<a name="line.29"></a> +<span class="sourceLineNo">030</span><a name="line.30"></a> +<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.HBaseIOException;<a name="line.31"></a> +<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.32"></a> +<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.util.Threads;<a name="line.33"></a> +<span class="sourceLineNo">034</span>import org.apache.hadoop.util.StringUtils;<a name="line.34"></a> +<span class="sourceLineNo">035</span><a name="line.35"></a> +<span class="sourceLineNo">036</span>/**<a name="line.36"></a> +<span class="sourceLineNo">037</span> * Sends responses of RPC back to clients.<a name="line.37"></a> +<span class="sourceLineNo">038</span> */<a name="line.38"></a> +<span class="sourceLineNo">039</span>@InterfaceAudience.Private<a name="line.39"></a> +<span class="sourceLineNo">040</span>class SimpleRpcServerResponder extends Thread {<a name="line.40"></a> +<span class="sourceLineNo">041</span> /** */<a name="line.41"></a> +<span class="sourceLineNo">042</span> private final SimpleRpcServer simpleRpcServer;<a name="line.42"></a> +<span class="sourceLineNo">043</span> private final Selector writeSelector;<a name="line.43"></a> +<span class="sourceLineNo">044</span> private final Set<SimpleServerRpcConnection> writingCons =<a name="line.44"></a> +<span class="sourceLineNo">045</span> Collections.newSetFromMap(new ConcurrentHashMap<SimpleServerRpcConnection, Boolean>());<a name="line.45"></a> +<span class="sourceLineNo">046</span><a name="line.46"></a> +<span class="sourceLineNo">047</span> SimpleRpcServerResponder(SimpleRpcServer simpleRpcServer) throws IOException {<a name="line.47"></a> +<span class="sourceLineNo">048</span> this.simpleRpcServer = simpleRpcServer;<a name="line.48"></a> +<span class="sourceLineNo">049</span> this.setName("RpcServer.responder");<a name="line.49"></a> +<span class="sourceLineNo">050</span> this.setDaemon(true);<a name="line.50"></a> +<span class="sourceLineNo">051</span> this.setUncaughtExceptionHandler(Threads.LOGGING_EXCEPTION_HANDLER);<a name="line.51"></a> +<span class="sourceLineNo">052</span> writeSelector = Selector.open(); // create a selector<a name="line.52"></a> +<span class="sourceLineNo">053</span> }<a name="line.53"></a> +<span class="sourceLineNo">054</span><a name="line.54"></a> +<span class="sourceLineNo">055</span> @Override<a name="line.55"></a> +<span class="sourceLineNo">056</span> public void run() {<a name="line.56"></a> +<span class="sourceLineNo">057</span> SimpleRpcServer.LOG.debug(getName() + ": starting");<a name="line.57"></a> +<span class="sourceLineNo">058</span> try {<a name="line.58"></a> +<span class="sourceLineNo">059</span> doRunLoop();<a name="line.59"></a> +<span class="sourceLineNo">060</span> } finally {<a name="line.60"></a> +<span class="sourceLineNo">061</span> SimpleRpcServer.LOG.info(getName() + ": stopping");<a name="line.61"></a> +<span class="sourceLineNo">062</span> try {<a name="line.62"></a> +<span class="sourceLineNo">063</span> writeSelector.close();<a name="line.63"></a> +<span class="sourceLineNo">064</span> } catch (IOException ioe) {<a name="line.64"></a> +<span class="sourceLineNo">065</span> SimpleRpcServer.LOG.error(getName() + ": couldn't close write selector", ioe);<a name="line.65"></a> +<span class="sourceLineNo">066</span> }<a name="line.66"></a> +<span class="sourceLineNo">067</span> }<a name="line.67"></a> +<span class="sourceLineNo">068</span> }<a name="line.68"></a> +<span class="sourceLineNo">069</span><a name="line.69"></a> +<span class="sourceLineNo">070</span> /**<a name="line.70"></a> +<span class="sourceLineNo">071</span> * Take the list of the connections that want to write, and register them in the selector.<a name="line.71"></a> +<span class="sourceLineNo">072</span> */<a name="line.72"></a> +<span class="sourceLineNo">073</span> private void registerWrites() {<a name="line.73"></a> +<span class="sourceLineNo">074</span> Iterator<SimpleServerRpcConnection> it = writingCons.iterator();<a name="line.74"></a> +<span class="sourceLineNo">075</span> while (it.hasNext()) {<a name="line.75"></a> +<span class="sourceLineNo">076</span> SimpleServerRpcConnection c = it.next();<a name="line.76"></a> +<span class="sourceLineNo">077</span> it.remove();<a name="line.77"></a> +<span class="sourceLineNo">078</span> SelectionKey sk = c.channel.keyFor(writeSelector);<a name="line.78"></a> +<span class="sourceLineNo">079</span> try {<a name="line.79"></a> +<span class="sourceLineNo">080</span> if (sk == null) {<a name="line.80"></a> +<span class="sourceLineNo">081</span> try {<a name="line.81"></a> +<span class="sourceLineNo">082</span> c.channel.register(writeSelector, SelectionKey.OP_WRITE, c);<a name="line.82"></a> +<span class="sourceLineNo">083</span> } catch (ClosedChannelException e) {<a name="line.83"></a> +<span class="sourceLineNo">084</span> // ignore: the client went away.<a name="line.84"></a> +<span class="sourceLineNo">085</span> if (SimpleRpcServer.LOG.isTraceEnabled()) SimpleRpcServer.LOG.trace("ignored", e);<a name="line.85"></a> +<span class="sourceLineNo">086</span> }<a name="line.86"></a> +<span class="sourceLineNo">087</span> } else {<a name="line.87"></a> +<span class="sourceLineNo">088</span> sk.interestOps(SelectionKey.OP_WRITE);<a name="line.88"></a> +<span class="sourceLineNo">089</span> }<a name="line.89"></a> +<span class="sourceLineNo">090</span> } catch (CancelledKeyException e) {<a name="line.90"></a> +<span class="sourceLineNo">091</span> // ignore: the client went away.<a name="line.91"></a> +<span class="sourceLineNo">092</span> if (SimpleRpcServer.LOG.isTraceEnabled()) SimpleRpcServer.LOG.trace("ignored", e);<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> }<a name="line.95"></a> +<span class="sourceLineNo">096</span><a name="line.96"></a> +<span class="sourceLineNo">097</span> /**<a name="line.97"></a> +<span class="sourceLineNo">098</span> * Add a connection to the list that want to write,<a name="line.98"></a> +<span class="sourceLineNo">099</span> */<a name="line.99"></a> +<span class="sourceLineNo">100</span> public void registerForWrite(SimpleServerRpcConnection c) {<a name="line.100"></a> +<span class="sourceLineNo">101</span> if (writingCons.add(c)) {<a name="line.101"></a> +<span class="sourceLineNo">102</span> writeSelector.wakeup();<a name="line.102"></a> +<span class="sourceLineNo">103</span> }<a name="line.103"></a> +<span class="sourceLineNo">104</span> }<a name="line.104"></a> +<span class="sourceLineNo">105</span><a name="line.105"></a> +<span class="sourceLineNo">106</span> private void doRunLoop() {<a name="line.106"></a> +<span class="sourceLineNo">107</span> long lastPurgeTime = 0; // last check for old calls.<a name="line.107"></a> +<span class="sourceLineNo">108</span> while (this.simpleRpcServer.running) {<a name="line.108"></a> +<span class="sourceLineNo">109</span> try {<a name="line.109"></a> +<span class="sourceLineNo">110</span> registerWrites();<a name="line.110"></a> +<span class="sourceLineNo">111</span> int keyCt = writeSelector.select(this.simpleRpcServer.purgeTimeout);<a name="line.111"></a> +<span class="sourceLineNo">112</span> if (keyCt == 0) {<a name="line.112"></a> +<span class="sourceLineNo">113</span> continue;<a name="line.113"></a> +<span class="sourceLineNo">114</span> }<a name="line.114"></a> +<span class="sourceLineNo">115</span><a name="line.115"></a> +<span class="sourceLineNo">116</span> Set<SelectionKey> keys = writeSelector.selectedKeys();<a name="line.116"></a> +<span class="sourceLineNo">117</span> Iterator<SelectionKey> iter = keys.iterator();<a name="line.117"></a> +<span class="sourceLineNo">118</span> while (iter.hasNext()) {<a name="line.118"></a> +<span class="sourceLineNo">119</span> SelectionKey key = iter.next();<a name="line.119"></a> +<span class="sourceLineNo">120</span> iter.remove();<a name="line.120"></a> +<span class="sourceLineNo">121</span> try {<a name="line.121"></a> +<span class="sourceLineNo">122</span> if (key.isValid() && key.isWritable()) {<a name="line.122"></a> +<span class="sourceLineNo">123</span> doAsyncWrite(key);<a name="line.123"></a> +<span class="sourceLineNo">124</span> }<a name="line.124"></a> +<span class="sourceLineNo">125</span> } catch (IOException e) {<a name="line.125"></a> +<span class="sourceLineNo">126</span> SimpleRpcServer.LOG.debug(getName() + ": asyncWrite", e);<a name="line.126"></a> +<span class="sourceLineNo">127</span> }<a name="line.127"></a> +<span class="sourceLineNo">128</span> }<a name="line.128"></a> +<span class="sourceLineNo">129</span><a name="line.129"></a> +<span class="sourceLineNo">130</span> lastPurgeTime = purge(lastPurgeTime);<a name="line.130"></a> +<span class="sourceLineNo">131</span><a name="line.131"></a> +<span class="sourceLineNo">132</span> } catch (OutOfMemoryError e) {<a name="line.132"></a> +<span class="sourceLineNo">133</span> if (this.simpleRpcServer.errorHandler != null) {<a name="line.133"></a> +<span class="sourceLineNo">134</span> if (this.simpleRpcServer.errorHandler.checkOOME(e)) {<a name="line.134"></a> +<span class="sourceLineNo">135</span> SimpleRpcServer.LOG.info(getName() + ": exiting on OutOfMemoryError");<a name="line.135"></a> +<span class="sourceLineNo">136</span> return;<a name="line.136"></a> +<span class="sourceLineNo">137</span> }<a name="line.137"></a> +<span class="sourceLineNo">138</span> } else {<a name="line.138"></a> +<span class="sourceLineNo">139</span> //<a name="line.139"></a> +<span class="sourceLineNo">140</span> // we can run out of memory if we have too many threads<a name="line.140"></a> +<span class="sourceLineNo">141</span> // log the event and sleep for a minute and give<a name="line.141"></a> +<span class="sourceLineNo">142</span> // some thread(s) a chance to finish<a name="line.142"></a> +<span class="sourceLineNo">143</span> //<a name="line.143"></a> +<span class="sourceLineNo">144</span> SimpleRpcServer.LOG.warn(getName() + ": OutOfMemoryError in server select", e);<a name="line.144"></a> +<span class="sourceLineNo">145</span> try {<a name="line.145"></a> +<span class="sourceLineNo">146</span> Thread.sleep(60000);<a name="line.146"></a> +<span class="sourceLineNo">147</span> } catch (InterruptedException ex) {<a name="line.147"></a> +<span class="sourceLineNo">148</span> SimpleRpcServer.LOG.debug("Interrupted while sleeping");<a name="line.148"></a> +<span class="sourceLineNo">149</span> return;<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> } catch (Exception e) {<a name="line.152"></a> +<span class="sourceLineNo">153</span> SimpleRpcServer.LOG<a name="line.153"></a> +<span class="sourceLineNo">154</span> .warn(getName() + ": exception in Responder " + StringUtils.stringifyException(e), e);<a name="line.154"></a> +<span class="sourceLineNo">155</span> }<a name="line.155"></a> +<span class="sourceLineNo">156</span> }<a name="line.156"></a> +<span class="sourceLineNo">157</span> SimpleRpcServer.LOG.info(getName() + ": stopped");<a name="line.157"></a> +<span class="sourceLineNo">158</span> }<a name="line.158"></a> +<span class="sourceLineNo">159</span><a name="line.159"></a> +<span class="sourceLineNo">160</span> /**<a name="line.160"></a> +<span class="sourceLineNo">161</span> * If there were some calls that have not been sent out for a long time, we close the connection.<a name="line.161"></a> +<span class="sourceLineNo">162</span> * @return the time of the purge.<a name="line.162"></a> +<span class="sourceLineNo">163</span> */<a name="line.163"></a> +<span class="sourceLineNo">164</span> private long purge(long lastPurgeTime) {<a name="line.164"></a> +<span class="sourceLineNo">165</span> long now = System.currentTimeMillis();<a name="line.165"></a> +<span class="sourceLineNo">166</span> if (now < lastPurgeTime + this.simpleRpcServer.purgeTimeout) {<a name="line.166"></a> +<span class="sourceLineNo">167</span> return lastPurgeTime;<a name="line.167"></a> +<span class="sourceLineNo">168</span> }<a name="line.168"></a> +<span class="sourceLineNo">169</span><a name="line.169"></a> +<span class="sourceLineNo">170</span> ArrayList<SimpleServerRpcConnection> conWithOldCalls = new ArrayList<>();<a name="line.170"></a> +<span class="sourceLineNo">171</span> // get the list of channels from list of keys.<a name="line.171"></a> +<span class="sourceLineNo">172</span> synchronized (writeSelector.keys()) {<a name="line.172"></a> +<span class="sourceLineNo">173</span> for (SelectionKey key : writeSelector.keys()) {<a name="line.173"></a> +<span class="sourceLineNo">174</span> SimpleServerRpcConnection connection = (SimpleServerRpcConnection) key.attachment();<a name="line.174"></a> +<span class="sourceLineNo">175</span> if (connection == null) {<a name="line.175"></a> +<span class="sourceLineNo">176</span> throw new IllegalStateException("Coding error: SelectionKey key without attachment.");<a name="line.176"></a> +<span class="sourceLineNo">177</span> }<a name="line.177"></a> +<span class="sourceLineNo">178</span> SimpleServerCall call = connection.responseQueue.peekFirst();<a name="line.178"></a> +<span class="sourceLineNo">179</span> if (call != null && now > call.lastSentTime + this.simpleRpcServer.purgeTimeout) {<a name="line.179"></a> +<span class="sourceLineNo">180</span> conWithOldCalls.add(call.getConnection());<a name="line.180"></a> +<span class="sourceLineNo">181</span> }<a name="line.181"></a> +<span class="sourceLineNo">182</span> }<a name="line.182"></a> +<span class="sourceLineNo">183</span> }<a name="line.183"></a> +<span class="sourceLineNo">184</span><a name="line.184"></a> +<span class="sourceLineNo">185</span> // Seems safer to close the connection outside of the synchronized loop...<a name="line.185"></a> +<span class="sourceLineNo">186</span> for (SimpleServerRpcConnection connection : conWithOldCalls) {<a name="line.186"></a> +<span class="sourceLineNo">187</span> this.simpleRpcServer.closeConnection(connection);<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 now;<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> private void doAsyncWrite(SelectionKey key) throws IOException {<a name="line.193"></a> +<span class="sourceLineNo">194</span> SimpleServerRpcConnection connection = (SimpleServerRpcConnection) key.attachment();<a name="line.194"></a> +<span class="sourceLineNo">195</span> if (connection == null) {<a name="line.195"></a> +<span class="sourceLineNo">196</span> throw new IOException("doAsyncWrite: no connection");<a name="line.196"></a> +<span class="sourceLineNo">197</span> }<a name="line.197"></a> +<span class="sourceLineNo">198</span> if (key.channel() != connection.channel) {<a name="line.198"></a> +<span class="sourceLineNo">199</span> throw new IOException("doAsyncWrite: bad channel");<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> if (processAllResponses(connection)) {<a name="line.202"></a> +<span class="sourceLineNo">203</span> try {<a name="line.203"></a> +<span class="sourceLineNo">204</span> // We wrote everything, so we don't need to be told when the socket is ready for<a name="line.204"></a> +<span class="sourceLineNo">205</span> // write anymore.<a name="line.205"></a> +<span class="sourceLineNo">206</span> key.interestOps(0);<a name="line.206"></a> +<span class="sourceLineNo">207</span> } catch (CancelledKeyException e) {<a name="line.207"></a> +<span class="sourceLineNo">208</span> /*<a name="line.208"></a> +<span class="sourceLineNo">209</span> * The Listener/reader might have closed the socket. We don't explicitly cancel the key, so<a name="line.209"></a> +<span class="sourceLineNo">210</span> * not sure if this will ever fire. This warning could be removed.<a name="line.210"></a> +<span class="sourceLineNo">211</span> */<a name="line.211"></a> +<span class="sourceLineNo">212</span> SimpleRpcServer.LOG.warn("Exception while changing ops : " + e);<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> }<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> * Process the response for this call. You need to have the lock on<a name="line.218"></a> +<span class="sourceLineNo">219</span> * {@link org.apache.hadoop.hbase.ipc.SimpleServerRpcConnection#responseWriteLock}<a name="line.219"></a> +<span class="sourceLineNo">220</span> * @param call the call<a name="line.220"></a> +<span class="sourceLineNo">221</span> * @return true if we proceed the call fully, false otherwise.<a name="line.221"></a> +<span class="sourceLineNo">222</span> * @throws IOException<a name="line.222"></a> +<span class="sourceLineNo">223</span> */<a name="line.223"></a> +<span class="sourceLineNo">224</span> boolean processResponse(final SimpleServerCall call) throws IOException {<a name="line.224"></a> +<span class="sourceLineNo">225</span> boolean error = true;<a name="line.225"></a> +<span class="sourceLineNo">226</span> try {<a name="line.226"></a> +<span class="sourceLineNo">227</span> // Send as much data as we can in the non-blocking fashion<a name="line.227"></a> +<span class="sourceLineNo">228</span> long numBytes =<a name="line.228"></a> +<span class="sourceLineNo">229</span> this.simpleRpcServer.channelWrite(call.getConnection().channel, call.response);<a name="line.229"></a> +<span class="sourceLineNo">230</span> if (numBytes < 0) {<a name="line.230"></a> +<span class="sourceLineNo">231</span> throw new HBaseIOException(<a name="line.231"></a> +<span class="sourceLineNo">232</span> "Error writing on the socket " + "for the call:" + call.toShortString());<a name="line.232"></a> +<span class="sourceLineNo">233</span> }<a name="line.233"></a> +<span class="sourceLineNo">234</span> error = false;<a name="line.234"></a> +<span class="sourceLineNo">235</span> } finally {<a name="line.235"></a> +<span class="sourceLineNo">236</span> if (error) {<a name="line.236"></a> +<span class="sourceLineNo">237</span> SimpleRpcServer.LOG.debug(getName() + call.toShortString() + ": output error -- closing");<a name="line.237"></a> +<span class="sourceLineNo">238</span> // We will be closing this connection itself. Mark this call as done so that all the<a name="line.238"></a> +<span class="sourceLineNo">239</span> // buffer(s) it got from pool can get released<a name="line.239"></a> +<span class="sourceLineNo">240</span> call.done();<a name="line.240"></a> +<span class="sourceLineNo">241</span> this.simpleRpcServer.closeConnection(call.getConnection());<a name="line.241"></a> +<span class="sourceLineNo">242</span> }<a name="line.242"></a> +<span class="sourceLineNo">243</span> }<a name="line.243"></a> +<span class="sourceLineNo">244</span><a name="line.244"></a> +<span class="sourceLineNo">245</span> if (!call.response.hasRemaining()) {<a name="line.245"></a> +<span class="sourceLineNo">246</span> call.done();<a name="line.246"></a> +<span class="sourceLineNo">247</span> return true;<a name="line.247"></a> +<span class="sourceLineNo">248</span> } else {<a name="line.248"></a> +<span class="sourceLineNo">249</span> return false; // Socket can't take more, we will have to come back.<a name="line.249"></a> +<span class="sourceLineNo">250</span> }<a name="line.250"></a> +<span class="sourceLineNo">251</span> }<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> * Process all the responses for this connection<a name="line.254"></a> +<span class="sourceLineNo">255</span> * @return true if all the calls were processed or that someone else is doing it. false if there *<a name="line.255"></a> +<span class="sourceLineNo">256</span> * is still some work to do. In this case, we expect the caller to delay us.<a name="line.256"></a> +<span class="sourceLineNo">257</span> * @throws IOException<a name="line.257"></a> +<span class="sourceLineNo">258</span> */<a name="line.258"></a> +<span class="sourceLineNo">259</span> private boolean processAllResponses(final SimpleServerRpcConnection connection)<a name="line.259"></a> +<span class="sourceLineNo">260</span> throws IOException {<a name="line.260"></a> +<span class="sourceLineNo">261</span> // We want only one writer on the channel for a connection at a time.<a name="line.261"></a> +<span class="sourceLineNo">262</span> connection.responseWriteLock.lock();<a name="line.262"></a> +<span class="sourceLineNo">263</span> try {<a name="line.263"></a> +<span class="sourceLineNo">264</span> for (int i = 0; i < 20; i++) {<a name="line.264"></a> +<span class="sourceLineNo">265</span> // protection if some handlers manage to need all the responder<a name="line.265"></a> +<span class="sourceLineNo">266</span> SimpleServerCall call = connection.responseQueue.pollFirst();<a name="line.266"></a> +<span class="sourceLineNo">267</span> if (call == null) {<a name="line.267"></a> +<span class="sourceLineNo">268</span> return true;<a name="line.268"></a> +<span class="sourceLineNo">269</span> }<a name="line.269"></a> +<span class="sourceLineNo">270</span> if (!processResponse(call)) {<a name="line.270"></a> +<span class="sourceLineNo">271</span> connection.responseQueue.addFirst(call);<a name="line.271"></a> +<span class="sourceLineNo">272</span> return false;<a name="line.272"></a> +<span class="sourceLineNo">273</span> }<a name="line.273"></a> +<span class="sourceLineNo">274</span> }<a name="line.274"></a> +<span class="sourceLineNo">275</span> } finally {<a name="line.275"></a> +<span class="sourceLineNo">276</span> connection.responseWriteLock.unlock();<a name="line.276"></a> +<span class="sourceLineNo">277</span> }<a name="line.277"></a> +<span class="sourceLineNo">278</span><a name="line.278"></a> +<span class="sourceLineNo">279</span> return connection.responseQueue.isEmpty();<a name="line.279"></a> +<span class="sourceLineNo">280</span> }<a name="line.280"></a> +<span class="sourceLineNo">281</span><a name="line.281"></a> +<span class="sourceLineNo">282</span> //<a name="line.282"></a> +<span class="sourceLineNo">283</span> // Enqueue a response from the application.<a name="line.283"></a> +<span class="sourceLineNo">284</span> //<a name="line.284"></a> +<span class="sourceLineNo">285</span> void doRespond(SimpleServerCall call) throws IOException {<a name="line.285"></a> +<span class="sourceLineNo">286</span> boolean added = false;<a name="line.286"></a> +<span class="sourceLineNo">287</span><a name="line.287"></a> +<span class="sourceLineNo">288</span> // If there is already a write in progress, we don't wait. This allows to free the handlers<a name="line.288"></a> +<span class="sourceLineNo">289</span> // immediately for other tasks.<a name="line.289"></a> +<span class="sourceLineNo">290</span> if (call.getConnection().responseQueue.isEmpty() &&<a name="line.290"></a> +<span class="sourceLineNo">291</span> call.getConnection().responseWriteLock.tryLock()) {<a name="line.291"></a> +<span class="sourceLineNo">292</span> try {<a name="line.292"></a> +<span class="sourceLineNo">293</span> if (call.getConnection().responseQueue.isEmpty()) {<a name="line.293"></a> +<span class="sourceLineNo">294</span> // If we're alone, we can try to do a direct call to the socket. It's<a name="line.294"></a> +<span class="sourceLineNo">295</span> // an optimisation to save on context switches and data transfer between cores..<a name="line.295"></a> +<span class="sourceLineNo">296</span> if (processResponse(call)) {<a name="line.296"></a> +<span class="sourceLineNo">297</span> return; // we're done.<a name="line.297"></a> +<span class="sourceLineNo">298</span> }<a name="line.298"></a> +<span class="sourceLineNo">299</span> // Too big to fit, putting ahead.<a name="line.299"></a> +<span class="sourceLineNo">300</span> call.getConnection().responseQueue.addFirst(call);<a name="line.300"></a> +<span class="sourceLineNo">301</span> added = true; // We will register to the selector later, outside of the lock.<a name="line.301"></a> +<span class="sourceLineNo">302</span> }<a name="line.302"></a> +<span class="sourceLineNo">303</span> } finally {<a name="line.303"></a> +<span class="sourceLineNo">304</span> call.getConnection().responseWriteLock.unlock();<a name="line.304"></a> +<span class="sourceLineNo">305</span> }<a name="line.305"></a> +<span class="sourceLineNo">306</span> }<a name="line.306"></a> +<span class="sourceLineNo">307</span><a name="line.307"></a> +<span class="sourceLineNo">308</span> if (!added) {<a name="line.308"></a> +<span class="sourceLineNo">309</span> call.getConnection().responseQueue.addLast(call);<a name="line.309"></a> +<span class="sourceLineNo">310</span> }<a name="line.310"></a> +<span class="sourceLineNo">311</span> call.responder.registerForWrite(call.getConnection());<a name="line.311"></a> +<span class="sourceLineNo">312</span><a name="line.312"></a> +<span class="sourceLineNo">313</span> // set the serve time when the response has to be sent later<a name="line.313"></a> +<span class="sourceLineNo">314</span> call.lastSentTime = System.currentTimeMillis();<a name="line.314"></a> +<span class="sourceLineNo">315</span> }<a name="line.315"></a> +<span class="sourceLineNo">316</span>}<a name="line.316"></a> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +</pre> +</div> +</body> +</html>
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/f55ebeaa/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleServerCall.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleServerCall.html b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleServerCall.html index 31df5ee..783d588 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleServerCall.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleServerCall.html @@ -32,59 +32,57 @@ <span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.24"></a> <span class="sourceLineNo">025</span>import org.apache.hadoop.hbase.io.ByteBufferPool;<a name="line.25"></a> <span class="sourceLineNo">026</span>import org.apache.hadoop.hbase.ipc.RpcServer.CallCleanup;<a name="line.26"></a> -<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.ipc.SimpleRpcServer.Connection;<a name="line.27"></a> -<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.ipc.SimpleRpcServer.Responder;<a name="line.28"></a> -<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.BlockingService;<a name="line.29"></a> -<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.MethodDescriptor;<a name="line.30"></a> -<span class="sourceLineNo">031</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Message;<a name="line.31"></a> -<span class="sourceLineNo">032</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.RequestHeader;<a name="line.32"></a> -<span class="sourceLineNo">033</span>import org.apache.htrace.TraceInfo;<a name="line.33"></a> -<span class="sourceLineNo">034</span><a name="line.34"></a> -<span class="sourceLineNo">035</span>/**<a name="line.35"></a> -<span class="sourceLineNo">036</span> * Datastructure that holds all necessary to a method invocation and then afterward, carries the<a name="line.36"></a> -<span class="sourceLineNo">037</span> * result.<a name="line.37"></a> -<span class="sourceLineNo">038</span> */<a name="line.38"></a> -<span class="sourceLineNo">039</span>@InterfaceAudience.Private<a name="line.39"></a> -<span class="sourceLineNo">040</span>class SimpleServerCall extends ServerCall {<a name="line.40"></a> +<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.BlockingService;<a name="line.27"></a> +<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.MethodDescriptor;<a name="line.28"></a> +<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Message;<a name="line.29"></a> +<span class="sourceLineNo">030</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.RequestHeader;<a name="line.30"></a> +<span class="sourceLineNo">031</span>import org.apache.htrace.TraceInfo;<a name="line.31"></a> +<span class="sourceLineNo">032</span><a name="line.32"></a> +<span class="sourceLineNo">033</span>/**<a name="line.33"></a> +<span class="sourceLineNo">034</span> * Datastructure that holds all necessary to a method invocation and then afterward, carries the<a name="line.34"></a> +<span class="sourceLineNo">035</span> * result.<a name="line.35"></a> +<span class="sourceLineNo">036</span> */<a name="line.36"></a> +<span class="sourceLineNo">037</span>@InterfaceAudience.Private<a name="line.37"></a> +<span class="sourceLineNo">038</span>class SimpleServerCall extends ServerCall<SimpleServerRpcConnection> {<a name="line.38"></a> +<span class="sourceLineNo">039</span><a name="line.39"></a> +<span class="sourceLineNo">040</span> long lastSentTime;<a name="line.40"></a> <span class="sourceLineNo">041</span><a name="line.41"></a> -<span class="sourceLineNo">042</span> long lastSentTime;<a name="line.42"></a> +<span class="sourceLineNo">042</span> final SimpleRpcServerResponder responder;<a name="line.42"></a> <span class="sourceLineNo">043</span><a name="line.43"></a> -<span class="sourceLineNo">044</span> final Responder responder;<a name="line.44"></a> -<span class="sourceLineNo">045</span><a name="line.45"></a> -<span class="sourceLineNo">046</span> @edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "NP_NULL_ON_SOME_PATH",<a name="line.46"></a> -<span class="sourceLineNo">047</span> justification = "Can't figure why this complaint is happening... see below")<a name="line.47"></a> -<span class="sourceLineNo">048</span> SimpleServerCall(int id, final BlockingService service, final MethodDescriptor md,<a name="line.48"></a> -<span class="sourceLineNo">049</span> RequestHeader header, Message param, CellScanner cellScanner, RpcServer.Connection connection,<a name="line.49"></a> -<span class="sourceLineNo">050</span> long size, TraceInfo tinfo, final InetAddress remoteAddress, long receiveTime, int timeout,<a name="line.50"></a> -<span class="sourceLineNo">051</span> ByteBufferPool reservoir, CellBlockBuilder cellBlockBuilder, CallCleanup reqCleanup,<a name="line.51"></a> -<span class="sourceLineNo">052</span> Responder responder) {<a name="line.52"></a> -<span class="sourceLineNo">053</span> super(id, service, md, header, param, cellScanner, connection, size, tinfo, remoteAddress,<a name="line.53"></a> -<span class="sourceLineNo">054</span> receiveTime, timeout, reservoir, cellBlockBuilder, reqCleanup);<a name="line.54"></a> -<span class="sourceLineNo">055</span> this.responder = responder;<a name="line.55"></a> -<span class="sourceLineNo">056</span> }<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> * Call is done. Execution happened and we returned results to client. It is now safe to cleanup.<a name="line.59"></a> -<span class="sourceLineNo">060</span> */<a name="line.60"></a> -<span class="sourceLineNo">061</span> @edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "IS2_INCONSISTENT_SYNC",<a name="line.61"></a> -<span class="sourceLineNo">062</span> justification = "Presume the lock on processing request held by caller is protection enough")<a name="line.62"></a> -<span class="sourceLineNo">063</span> @Override<a name="line.63"></a> -<span class="sourceLineNo">064</span> void done() {<a name="line.64"></a> -<span class="sourceLineNo">065</span> super.done();<a name="line.65"></a> -<span class="sourceLineNo">066</span> this.getConnection().decRpcCount(); // Say that we're done with this call.<a name="line.66"></a> -<span class="sourceLineNo">067</span> }<a name="line.67"></a> -<span class="sourceLineNo">068</span><a name="line.68"></a> -<span class="sourceLineNo">069</span> @Override<a name="line.69"></a> -<span class="sourceLineNo">070</span> public synchronized void sendResponseIfReady() throws IOException {<a name="line.70"></a> -<span class="sourceLineNo">071</span> // set param null to reduce memory pressure<a name="line.71"></a> -<span class="sourceLineNo">072</span> this.param = null;<a name="line.72"></a> -<span class="sourceLineNo">073</span> this.responder.doRespond(this);<a name="line.73"></a> -<span class="sourceLineNo">074</span> }<a name="line.74"></a> -<span class="sourceLineNo">075</span><a name="line.75"></a> -<span class="sourceLineNo">076</span> Connection getConnection() {<a name="line.76"></a> -<span class="sourceLineNo">077</span> return (Connection) this.connection;<a name="line.77"></a> -<span class="sourceLineNo">078</span> }<a name="line.78"></a> -<span class="sourceLineNo">079</span>}<a name="line.79"></a> +<span class="sourceLineNo">044</span> @edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "NP_NULL_ON_SOME_PATH",<a name="line.44"></a> +<span class="sourceLineNo">045</span> justification = "Can't figure why this complaint is happening... see below")<a name="line.45"></a> +<span class="sourceLineNo">046</span> SimpleServerCall(int id, final BlockingService service, final MethodDescriptor md,<a name="line.46"></a> +<span class="sourceLineNo">047</span> RequestHeader header, Message param, CellScanner cellScanner,<a name="line.47"></a> +<span class="sourceLineNo">048</span> SimpleServerRpcConnection connection, long size, TraceInfo tinfo,<a name="line.48"></a> +<span class="sourceLineNo">049</span> final InetAddress remoteAddress, long receiveTime, int timeout, ByteBufferPool reservoir,<a name="line.49"></a> +<span class="sourceLineNo">050</span> CellBlockBuilder cellBlockBuilder, CallCleanup reqCleanup, SimpleRpcServerResponder responder) {<a name="line.50"></a> +<span class="sourceLineNo">051</span> super(id, service, md, header, param, cellScanner, connection, size, tinfo, remoteAddress,<a name="line.51"></a> +<span class="sourceLineNo">052</span> receiveTime, timeout, reservoir, cellBlockBuilder, reqCleanup);<a name="line.52"></a> +<span class="sourceLineNo">053</span> this.responder = responder;<a name="line.53"></a> +<span class="sourceLineNo">054</span> }<a name="line.54"></a> +<span class="sourceLineNo">055</span><a name="line.55"></a> +<span class="sourceLineNo">056</span> /**<a name="line.56"></a> +<span class="sourceLineNo">057</span> * Call is done. Execution happened and we returned results to client. It is now safe to cleanup.<a name="line.57"></a> +<span class="sourceLineNo">058</span> */<a name="line.58"></a> +<span class="sourceLineNo">059</span> @edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "IS2_INCONSISTENT_SYNC",<a name="line.59"></a> +<span class="sourceLineNo">060</span> justification = "Presume the lock on processing request held by caller is protection enough")<a name="line.60"></a> +<span class="sourceLineNo">061</span> @Override<a name="line.61"></a> +<span class="sourceLineNo">062</span> void done() {<a name="line.62"></a> +<span class="sourceLineNo">063</span> super.done();<a name="line.63"></a> +<span class="sourceLineNo">064</span> this.getConnection().decRpcCount(); // Say that we're done with this call.<a name="line.64"></a> +<span class="sourceLineNo">065</span> }<a name="line.65"></a> +<span class="sourceLineNo">066</span><a name="line.66"></a> +<span class="sourceLineNo">067</span> @Override<a name="line.67"></a> +<span class="sourceLineNo">068</span> public synchronized void sendResponseIfReady() throws IOException {<a name="line.68"></a> +<span class="sourceLineNo">069</span> // set param null to reduce memory pressure<a name="line.69"></a> +<span class="sourceLineNo">070</span> this.param = null;<a name="line.70"></a> +<span class="sourceLineNo">071</span> this.responder.doRespond(this);<a name="line.71"></a> +<span class="sourceLineNo">072</span> }<a name="line.72"></a> +<span class="sourceLineNo">073</span><a name="line.73"></a> +<span class="sourceLineNo">074</span> SimpleServerRpcConnection getConnection() {<a name="line.74"></a> +<span class="sourceLineNo">075</span> return (SimpleServerRpcConnection) this.connection;<a name="line.75"></a> +<span class="sourceLineNo">076</span> }<a name="line.76"></a> +<span class="sourceLineNo">077</span>}<a name="line.77"></a> http://git-wip-us.apache.org/repos/asf/hbase-site/blob/f55ebeaa/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleServerRpcConnection.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleServerRpcConnection.html b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleServerRpcConnection.html new file mode 100644 index 0000000..ff541c9 --- /dev/null +++ b/devapidocs/src-html/org/apache/hadoop/hbase/ipc/SimpleServerRpcConnection.html @@ -0,0 +1,500 @@ +<!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.ipc;<a name="line.18"></a> +<span class="sourceLineNo">019</span><a name="line.19"></a> +<span class="sourceLineNo">020</span>import java.io.IOException;<a name="line.20"></a> +<span class="sourceLineNo">021</span>import java.io.InputStream;<a name="line.21"></a> +<span class="sourceLineNo">022</span>import java.net.InetAddress;<a name="line.22"></a> +<span class="sourceLineNo">023</span>import java.net.Socket;<a name="line.23"></a> +<span class="sourceLineNo">024</span>import java.nio.ByteBuffer;<a name="line.24"></a> +<span class="sourceLineNo">025</span>import java.nio.channels.ReadableByteChannel;<a name="line.25"></a> +<span class="sourceLineNo">026</span>import java.nio.channels.SocketChannel;<a name="line.26"></a> +<span class="sourceLineNo">027</span>import java.util.Arrays;<a name="line.27"></a> +<span class="sourceLineNo">028</span>import java.util.concurrent.ConcurrentLinkedDeque;<a name="line.28"></a> +<span class="sourceLineNo">029</span>import java.util.concurrent.atomic.LongAdder;<a name="line.29"></a> +<span class="sourceLineNo">030</span>import java.util.concurrent.locks.Lock;<a name="line.30"></a> +<span class="sourceLineNo">031</span>import java.util.concurrent.locks.ReentrantLock;<a name="line.31"></a> +<span class="sourceLineNo">032</span><a name="line.32"></a> +<span class="sourceLineNo">033</span>import org.apache.hadoop.hbase.CellScanner;<a name="line.33"></a> +<span class="sourceLineNo">034</span>import org.apache.hadoop.hbase.DoNotRetryIOException;<a name="line.34"></a> +<span class="sourceLineNo">035</span>import org.apache.hadoop.hbase.HConstants;<a name="line.35"></a> +<span class="sourceLineNo">036</span>import org.apache.hadoop.hbase.classification.InterfaceAudience;<a name="line.36"></a> +<span class="sourceLineNo">037</span>import org.apache.hadoop.hbase.client.VersionInfoUtil;<a name="line.37"></a> +<span class="sourceLineNo">038</span>import org.apache.hadoop.hbase.exceptions.RequestTooBigException;<a name="line.38"></a> +<span class="sourceLineNo">039</span>import org.apache.hadoop.hbase.ipc.RpcServer.CallCleanup;<a name="line.39"></a> +<span class="sourceLineNo">040</span>import org.apache.hadoop.hbase.nio.ByteBuff;<a name="line.40"></a> +<span class="sourceLineNo">041</span>import org.apache.hadoop.hbase.nio.SingleByteBuff;<a name="line.41"></a> +<span class="sourceLineNo">042</span>import org.apache.hadoop.hbase.security.AccessDeniedException;<a name="line.42"></a> +<span class="sourceLineNo">043</span>import org.apache.hadoop.hbase.security.AuthMethod;<a name="line.43"></a> +<span class="sourceLineNo">044</span>import org.apache.hadoop.hbase.security.SaslStatus;<a name="line.44"></a> +<span class="sourceLineNo">045</span>import org.apache.hadoop.hbase.security.SaslUtil;<a name="line.45"></a> +<span class="sourceLineNo">046</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.BlockingService;<a name="line.46"></a> +<span class="sourceLineNo">047</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.CodedInputStream;<a name="line.47"></a> +<span class="sourceLineNo">048</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Message;<a name="line.48"></a> +<span class="sourceLineNo">049</span>import org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.MethodDescriptor;<a name="line.49"></a> +<span class="sourceLineNo">050</span>import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;<a name="line.50"></a> +<span class="sourceLineNo">051</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.RPCProtos.RequestHeader;<a name="line.51"></a> +<span class="sourceLineNo">052</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.52"></a> +<span class="sourceLineNo">053</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.53"></a> +<span class="sourceLineNo">054</span>import org.apache.hadoop.io.IntWritable;<a name="line.54"></a> +<span class="sourceLineNo">055</span>import org.apache.htrace.TraceInfo;<a name="line.55"></a> +<span class="sourceLineNo">056</span><a name="line.56"></a> +<span class="sourceLineNo">057</span>/** Reads calls from a connection and queues them for handling. */<a name="line.57"></a> +<span class="sourceLineNo">058</span>@edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "VO_VOLATILE_INCREMENT",<a name="line.58"></a> +<span class="sourceLineNo">059</span> justification = "False positive according to http://sourceforge.net/p/findbugs/bugs/1032/";)<a name="line.59"></a> +<span class="sourceLineNo">060</span>@InterfaceAudience.Private<a name="line.60"></a> +<span class="sourceLineNo">061</span>class SimpleServerRpcConnection extends ServerRpcConnection {<a name="line.61"></a> +<span class="sourceLineNo">062</span><a name="line.62"></a> +<span class="sourceLineNo">063</span> final SocketChannel channel;<a name="line.63"></a> +<span class="sourceLineNo">064</span> private ByteBuff data;<a name="line.64"></a> +<span class="sourceLineNo">065</span> private ByteBuffer dataLengthBuffer;<a name="line.65"></a> +<span class="sourceLineNo">066</span> protected final ConcurrentLinkedDeque<SimpleServerCall> responseQueue =<a name="line.66"></a> +<span class="sourceLineNo">067</span> new ConcurrentLinkedDeque<>();<a name="line.67"></a> +<span class="sourceLineNo">068</span> final Lock responseWriteLock = new ReentrantLock();<a name="line.68"></a> +<span class="sourceLineNo">069</span> private final LongAdder rpcCount = new LongAdder(); // number of outstanding rpcs<a name="line.69"></a> +<span class="sourceLineNo">070</span> private long lastContact;<a name="line.70"></a> +<span class="sourceLineNo">071</span> private final Socket socket;<a name="line.71"></a> +<span class="sourceLineNo">072</span> private final SimpleRpcServerResponder responder;<a name="line.72"></a> +<span class="sourceLineNo">073</span><a name="line.73"></a> +<span class="sourceLineNo">074</span> public SimpleServerRpcConnection(SimpleRpcServer rpcServer, SocketChannel channel,<a name="line.74"></a> +<span class="sourceLineNo">075</span> long lastContact) {<a name="line.75"></a> +<span class="sourceLineNo">076</span> super(rpcServer);<a name="line.76"></a> +<span class="sourceLineNo">077</span> this.channel = channel;<a name="line.77"></a> +<span class="sourceLineNo">078</span> this.lastContact = lastContact;<a name="line.78"></a> +<span class="sourceLineNo">079</span> this.data = null;<a name="line.79"></a> +<span class="sourceLineNo">080</span> this.dataLengthBuffer = ByteBuffer.allocate(4);<a name="line.80"></a> +<span class="sourceLineNo">081</span> this.socket = channel.socket();<a name="line.81"></a> +<span class="sourceLineNo">082</span> this.addr = socket.getInetAddress();<a name="line.82"></a> +<span class="sourceLineNo">083</span> if (addr == null) {<a name="line.83"></a> +<span class="sourceLineNo">084</span> this.hostAddress = "*Unknown*";<a name="line.84"></a> +<span class="sourceLineNo">085</span> } else {<a name="line.85"></a> +<span class="sourceLineNo">086</span> this.hostAddress = addr.getHostAddress();<a name="line.86"></a> +<span class="sourceLineNo">087</span> }<a name="line.87"></a> +<span class="sourceLineNo">088</span> this.remotePort = socket.getPort();<a name="line.88"></a> +<span class="sourceLineNo">089</span> if (rpcServer.socketSendBufferSize != 0) {<a name="line.89"></a> +<span class="sourceLineNo">090</span> try {<a name="line.90"></a> +<span class="sourceLineNo">091</span> socket.setSendBufferSize(rpcServer.socketSendBufferSize);<a name="line.91"></a> +<span class="sourceLineNo">092</span> } catch (IOException e) {<a name="line.92"></a> +<span class="sourceLineNo">093</span> SimpleRpcServer.LOG.warn(<a name="line.93"></a> +<span class="sourceLineNo">094</span> "Connection: unable to set socket send buffer size to " + rpcServer.socketSendBufferSize);<a name="line.94"></a> +<span class="sourceLineNo">095</span> }<a name="line.95"></a> +<span class="sourceLineNo">096</span> }<a name="line.96"></a> +<span class="sourceLineNo">097</span> this.saslCall = new SimpleServerCall(SASL_CALLID, null, null, null, null, null, this, 0, null,<a name="line.97"></a> +<span class="sourceLineNo">098</span> null, System.currentTimeMillis(), 0, rpcServer.reservoir, rpcServer.cellBlockBuilder, null,<a name="line.98"></a> +<span class="sourceLineNo">099</span> rpcServer.responder);<a name="line.99"></a> +<span class="sourceLineNo">100</span> this.setConnectionHeaderResponseCall = new SimpleServerCall(CONNECTION_HEADER_RESPONSE_CALLID,<a name="line.100"></a> +<span class="sourceLineNo">101</span> null, null, null, null, null, this, 0, null, null, System.currentTimeMillis(), 0,<a name="line.101"></a> +<span class="sourceLineNo">102</span> rpcServer.reservoir, rpcServer.cellBlockBuilder, null, rpcServer.responder);<a name="line.102"></a> +<span class="sourceLineNo">103</span> this.authFailedCall = new SimpleServerCall(AUTHORIZATION_FAILED_CALLID, null, null, null, null,<a name="line.103"></a> +<span class="sourceLineNo">104</span> null, this, 0, null, null, System.currentTimeMillis(), 0, rpcServer.reservoir,<a name="line.104"></a> +<span class="sourceLineNo">105</span> rpcServer.cellBlockBuilder, null, rpcServer.responder);<a name="line.105"></a> +<span class="sourceLineNo">106</span> this.responder = rpcServer.responder;<a name="line.106"></a> +<span class="sourceLineNo">107</span> }<a name="line.107"></a> +<span class="sourceLineNo">108</span><a name="line.108"></a> +<span class="sourceLineNo">109</span> public void setLastContact(long lastContact) {<a name="line.109"></a> +<span class="sourceLineNo">110</span> this.lastContact = lastContact;<a name="line.110"></a> +<span class="sourceLineNo">111</span> }<a name="line.111"></a> +<span class="sourceLineNo">112</span><a name="line.112"></a> +<span class="sourceLineNo">113</span> public long getLastContact() {<a name="line.113"></a> +<span class="sourceLineNo">114</span> return lastContact;<a name="line.114"></a> +<span class="sourceLineNo">115</span> }<a name="line.115"></a> +<span class="sourceLineNo">116</span><a name="line.116"></a> +<span class="sourceLineNo">117</span> /* Return true if the connection has no outstanding rpc */<a name="line.117"></a> +<span class="sourceLineNo">118</span> boolean isIdle() {<a name="line.118"></a> +<span class="sourceLineNo">119</span> return rpcCount.sum() == 0;<a name="line.119"></a> +<span class="sourceLineNo">120</span> }<a name="line.120"></a> +<span class="sourceLineNo">121</span><a name="line.121"></a> +<span class="sourceLineNo">122</span> /* Decrement the outstanding RPC count */<a name="line.122"></a> +<span class="sourceLineNo">123</span> protected void decRpcCount() {<a name="line.123"></a> +<span class="sourceLineNo">124</span> rpcCount.decrement();<a name="line.124"></a> +<span class="sourceLineNo">125</span> }<a name="line.125"></a> +<span class="sourceLineNo">126</span><a name="line.126"></a> +<span class="sourceLineNo">127</span> /* Increment the outstanding RPC count */<a name="line.127"></a> +<span class="sourceLineNo">128</span> protected void incRpcCount() {<a name="line.128"></a> +<span class="sourceLineNo">129</span> rpcCount.increment();<a name="line.129"></a> +<span class="sourceLineNo">130</span> }<a name="line.130"></a> +<span class="sourceLineNo">131</span><a name="line.131"></a> +<span class="sourceLineNo">132</span> private int readPreamble() throws IOException {<a name="line.132"></a> +<span class="sourceLineNo">133</span> int count;<a name="line.133"></a> +<span class="sourceLineNo">134</span> // Check for 'HBas' magic.<a name="line.134"></a> +<span class="sourceLineNo">135</span> this.dataLengthBuffer.flip();<a name="line.135"></a> +<span class="sourceLineNo">136</span> if (!Arrays.equals(HConstants.RPC_HEADER, dataLengthBuffer.array())) {<a name="line.136"></a> +<span class="sourceLineNo">137</span> return doBadPreambleHandling(<a name="line.137"></a> +<span class="sourceLineNo">138</span> "Expected HEADER=" + Bytes.toStringBinary(HConstants.RPC_HEADER) + " but received HEADER=" +<a name="line.138"></a> +<span class="sourceLineNo">139</span> Bytes.toStringBinary(dataLengthBuffer.array()) + " from " + toString());<a name="line.139"></a> +<span class="sourceLineNo">140</span> }<a name="line.140"></a> +<span class="sourceLineNo">141</span> // Now read the next two bytes, the version and the auth to use.<a name="line.141"></a> +<span class="sourceLineNo">142</span> ByteBuffer versionAndAuthBytes = ByteBuffer.allocate(2);<a name="line.142"></a> +<span class="sourceLineNo">143</span> count = this.rpcServer.channelRead(channel, versionAndAuthBytes);<a name="line.143"></a> +<span class="sourceLineNo">144</span> if (count < 0 || versionAndAuthBytes.remaining() > 0) {<a name="line.144"></a> +<span class="sourceLineNo">145</span> return count;<a name="line.145"></a> +<span class="sourceLineNo">146</span> }<a name="line.146"></a> +<span class="sourceLineNo">147</span> int version = versionAndAuthBytes.get(0);<a name="line.147"></a> +<span class="sourceLineNo">148</span> byte authbyte = versionAndAuthBytes.get(1);<a name="line.148"></a> +<span class="sourceLineNo">149</span> this.authMethod = AuthMethod.valueOf(authbyte);<a name="line.149"></a> +<span class="sourceLineNo">150</span> if (version != SimpleRpcServer.CURRENT_VERSION) {<a name="line.150"></a> +<span class="sourceLineNo">151</span> String msg = getFatalConnectionString(version, authbyte);<a name="line.151"></a> +<span class="sourceLineNo">152</span> return doBadPreambleHandling(msg, new WrongVersionException(msg));<a name="line.152"></a> +<span class="sourceLineNo">153</span> }<a name="line.153"></a> +<span class="sourceLineNo">154</span> if (authMethod == null) {<a name="line.154"></a> +<span class="sourceLineNo">155</span> String msg = getFatalConnectionString(version, authbyte);<a name="line.155"></a> +<span class="sourceLineNo">156</span> return doBadPreambleHandling(msg, new BadAuthException(msg));<a name="line.156"></a> +<span class="sourceLineNo">157</span> }<a name="line.157"></a> +<span class="sourceLineNo">158</span> if (this.rpcServer.isSecurityEnabled && authMethod == AuthMethod.SIMPLE) {<a name="line.158"></a> +<span class="sourceLineNo">159</span> if (this.rpcServer.allowFallbackToSimpleAuth) {<a name="line.159"></a> +<span class="sourceLineNo">160</span> this.rpcServer.metrics.authenticationFallback();<a name="line.160"></a> +<span class="sourceLineNo">161</span> authenticatedWithFallback = true;<a name="line.161"></a> +<span class="sourceLineNo">162</span> } else {<a name="line.162"></a> +<span class="sourceLineNo">163</span> AccessDeniedException ae = new AccessDeniedException("Authentication is required");<a name="line.163"></a> +<span class="sourceLineNo">164</span> this.rpcServer.setupResponse(authFailedResponse, authFailedCall, ae, ae.getMessage());<a name="line.164"></a> +<span class="sourceLineNo">165</span> authFailedCall.sendResponseIfReady();<a name="line.165"></a> +<span class="sourceLineNo">166</span> throw ae;<a name="line.166"></a> +<span class="sourceLineNo">167</span> }<a name="line.167"></a> +<span class="sourceLineNo">168</span> }<a name="line.168"></a> +<span class="sourceLineNo">169</span> if (!this.rpcServer.isSecurityEnabled && authMethod != AuthMethod.SIMPLE) {<a name="line.169"></a> +<span class="sourceLineNo">170</span> doRawSaslReply(SaslStatus.SUCCESS, new IntWritable(SaslUtil.SWITCH_TO_SIMPLE_AUTH), null,<a name="line.170"></a> +<span class="sourceLineNo">171</span> null);<a name="line.171"></a> +<span class="sourceLineNo">172</span> authMethod = AuthMethod.SIMPLE;<a name="line.172"></a> +<span class="sourceLineNo">173</span> // client has already sent the initial Sasl message and we<a name="line.173"></a> +<span class="sourceLineNo">174</span> // should ignore it. Both client and server should fall back<a name="line.174"></a> +<span class="sourceLineNo">175</span> // to simple auth from now on.<a name="line.175"></a> +<span class="sourceLineNo">176</span> skipInitialSaslHandshake = true;<a name="line.176"></a> +<span class="sourceLineNo">177</span> }<a name="line.177"></a> +<span class="sourceLineNo">178</span> if (authMethod != AuthMethod.SIMPLE) {<a name="line.178"></a> +<span class="sourceLineNo">179</span> useSasl = true;<a name="line.179"></a> +<span class="sourceLineNo">180</span> }<a name="line.180"></a> +<span class="sourceLineNo">181</span><a name="line.181"></a> +<span class="sourceLineNo">182</span> dataLengthBuffer.clear();<a name="line.182"></a> +<span class="sourceLineNo">183</span> connectionPreambleRead = true;<a name="line.183"></a> +<span class="sourceLineNo">184</span> return count;<a name="line.184"></a> +<span class="sourceLineNo">185</span> }<a name="line.185"></a> +<span class="sourceLineNo">186</span><a name="line.186"></a> +<span class="sourceLineNo">187</span> private int read4Bytes() throws IOException {<a name="line.187"></a> +<span class="sourceLineNo">188</span> if (this.dataLengthBuffer.remaining() > 0) {<a name="line.188"></a> +<span class="sourceLineNo">189</span> return this.rpcServer.channelRead(channel, this.dataLengthBuffer);<a name="line.189"></a> +<span class="sourceLineNo">190</span> } else {<a name="line.190"></a> +<span class="sourceLineNo">191</span> return 0;<a name="line.191"></a> +<span class="sourceLineNo">192</span> }<a name="line.192"></a> +<span class="sourceLineNo">193</span> }<a name="line.193"></a> +<span class="sourceLineNo">194</span><a name="line.194"></a> +<span class="sourceLineNo">195</span> /**<a name="line.195"></a> +<span class="sourceLineNo">196</span> * Read off the wire. If there is not enough data to read, update the connection state with what<a name="line.196"></a> +<span class="sourceLineNo">197</span> * we have and returns.<a name="line.197"></a> +<span class="sourceLineNo">198</span> * @return Returns -1 if failure (and caller will close connection), else zero or more.<a name="line.198"></a> +<span class="sourceLineNo">199</span> * @throws IOException<a name="line.199"></a> +<span class="sourceLineNo">200</span> * @throws InterruptedException<a name="line.200"></a> +<span class="sourceLineNo">201</span> */<a name="line.201"></a> +<span class="sourceLineNo">202</span> public int readAndProcess() throws IOException, InterruptedException {<a name="line.202"></a> +<span class="sourceLineNo">203</span> // Try and read in an int. If new connection, the int will hold the 'HBas' HEADER. If it<a name="line.203"></a> +<span class="sourceLineNo">204</span> // does, read in the rest of the connection preamble, the version and the auth method.<a name="line.204"></a> +<span class="sourceLineNo">205</span> // Else it will be length of the data to read (or -1 if a ping). We catch the integer<a name="line.205"></a> +<span class="sourceLineNo">206</span> // length into the 4-byte this.dataLengthBuffer.<a name="line.206"></a> +<span class="sourceLineNo">207</span> int count = read4Bytes();<a name="line.207"></a> +<span class="sourceLineNo">208</span> if (count < 0 || dataLengthBuffer.remaining() > 0) {<a name="line.208"></a> +<span class="sourceLineNo">209</span> return count;<a name="line.209"></a> +<span class="sourceLineNo">210</span> }<a name="line.210"></a> +<span class="sourceLineNo">211</span><a name="line.211"></a> +<span class="sourceLineNo">212</span> // If we have not read the connection setup preamble, look to see if that is on the wire.<a name="line.212"></a> +<span class="sourceLineNo">213</span> if (!connectionPreambleRead) {<a name="line.213"></a> +<span class="sourceLineNo">214</span> count = readPreamble();<a name="line.214"></a> +<span class="sourceLineNo">215</span> if (!connectionPreambleRead) {<a name="line.215"></a> +<span class="sourceLineNo">216</span> return count;<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> count = read4Bytes();<a name="line.219"></a> +<span class="sourceLineNo">220</span> if (count < 0 || dataLengthBuffer.remaining() > 0) {<a name="line.220"></a> +<span class="sourceLineNo">221</span> return count;<a name="line.221"></a> +<span class="sourceLineNo">222</span> }<a name="line.222"></a> +<span class="sourceLineNo">223</span> }<a name="line.223"></a> +<span class="sourceLineNo">224</span><a name="line.224"></a> +<span class="sourceLineNo">225</span> // We have read a length and we have read the preamble. It is either the connection header<a name="line.225"></a> +<span class="sourceLineNo">226</span> // or it is a request.<a name="line.226"></a> +<span class="sourceLineNo">227</span> if (data == null) {<a name="line.227"></a> +<span class="sourceLineNo">228</span> dataLengthBuffer.flip();<a name="line.228"></a> +<span class="sourceLineNo">229</span> int dataLength = dataLengthBuffer.getInt();<a name="line.229"></a> +<span class="sourceLineNo">230</span> if (dataLength == RpcClient.PING_CALL_ID) {<a name="line.230"></a> +<span class="sourceLineNo">231</span> if (!useWrap) { // covers the !useSasl too<a name="line.231"></a> +<span class="sourceLineNo">232</span> dataLengthBuffer.clear();<a name="line.232"></a> +<span class="sourceLineNo">233</span> return 0; // ping message<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> if (dataLength < 0) { // A data length of zero is legal.<a name="line.236"></a> +<span class="sourceLineNo">237</span> throw new DoNotRetryIOException(<a name="line.237"></a> +<span class="sourceLineNo">238</span> "Unexpected data length " + dataLength + "!! from " + getHostAddress());<a name="line.238"></a> +<span class="sourceLineNo">239</span> }<a name="line.239"></a> +<span class="sourceLineNo">240</span><a name="line.240"></a> +<span class="sourceLineNo">241</span> if (dataLength > this.rpcServer.maxRequestSize) {<a name="line.241"></a> +<span class="sourceLineNo">242</span> String msg = "RPC data length of " + dataLength + " received from " + getHostAddress() +<a name="line.242"></a> +<span class="sourceLineNo">243</span> " is greater than max allowed " + this.rpcServer.maxRequestSize + ". Set \"" +<a name="line.243"></a> +<span class="sourceLineNo">244</span> SimpleRpcServer.MAX_REQUEST_SIZE +<a name="line.244"></a> +<span class="sourceLineNo">245</span> "\" on server to override this limit (not recommended)";<a name="line.245"></a> +<span class="sourceLineNo">246</span> SimpleRpcServer.LOG.warn(msg);<a name="line.246"></a> +<span class="sourceLineNo">247</span><a name="line.247"></a> +<span class="sourceLineNo">248</span> if (connectionHeaderRead && connectionPreambleRead) {<a name="line.248"></a> +<span class="sourceLineNo">249</span> incRpcCount();<a name="line.249"></a> +<span class="sourceLineNo">250</span> // Construct InputStream for the non-blocking SocketChannel<a name="line.250"></a> +<span class="sourceLineNo">251</span> // We need the InputStream because we want to read only the request header<a name="line.251"></a> +<span class="sourceLineNo">252</span> // instead of the whole rpc.<a name="line.252"></a> +<span class="sourceLineNo">253</span> ByteBuffer buf = ByteBuffer.allocate(1);<a name="line.253"></a> +<span class="sourceLineNo">254</span> InputStream is = new InputStream() {<a name="line.254"></a> +<span class="sourceLineNo">255</span> @Override<a name="line.255"></a> +<span class="sourceLineNo">256</span> public int read() throws IOException {<a name="line.256"></a> +<span class="sourceLineNo">257</span> SimpleServerRpcConnection.this.rpcServer.channelRead(channel, buf);<a name="line.257"></a> +<span class="sourceLineNo">258</span> buf.flip();<a name="line.258"></a> +<span class="sourceLineNo">259</span> int x = buf.get();<a name="line.259"></a> +<span class="sourceLineNo">260</span> buf.flip();<a name="line.260"></a> +<span class="sourceLineNo">261</span> return x;<a name="line.261"></a> +<span class="sourceLineNo">262</span> }<a name="line.262"></a> +<span class="sourceLineNo">263</span> };<a name="line.263"></a> +<span class="sourceLineNo">264</span> CodedInputStream cis = CodedInputStream.newInstance(is);<a name="line.264"></a> +<span class="sourceLineNo">265</span> int headerSize = cis.readRawVarint32();<a name="line.265"></a> +<span class="sourceLineNo">266</span> Message.Builder builder = RequestHeader.newBuilder();<a name="line.266"></a> +<span class="sourceLineNo">267</span> ProtobufUtil.mergeFrom(builder, cis, headerSize);<a name="line.267"></a> +<span class="sourceLineNo">268</span> RequestHeader header = (RequestHeader) builder.build();<a name="line.268"></a> +<span class="sourceLineNo">269</span><a name="line.269"></a> +<span class="sourceLineNo">270</span> // Notify the client about the offending request<a name="line.270"></a> +<span class="sourceLineNo">271</span> SimpleServerCall reqTooBig = new SimpleServerCall(header.getCallId(), this.service, null,<a name="line.271"></a> +<span class="sourceLineNo">272</span> null, null, null, this, 0, null, this.addr, System.currentTimeMillis(), 0,<a name="line.272"></a> +<span class="sourceLineNo">273</span> this.rpcServer.reservoir, this.rpcServer.cellBlockBuilder, null, responder);<a name="line.273"></a> +<span class="sourceLineNo">274</span> this.rpcServer.metrics.exception(SimpleRpcServer.REQUEST_TOO_BIG_EXCEPTION);<a name="line.274"></a> +<span class="sourceLineNo">275</span> // Make sure the client recognizes the underlying exception<a name="line.275"></a> +<span class="sourceLineNo">276</span> // Otherwise, throw a DoNotRetryIOException.<a name="line.276"></a> +<span class="sourceLineNo">277</span> if (VersionInfoUtil.hasMinimumVersion(connectionHeader.getVersionInfo(),<a name="line.277"></a> +<span class="sourceLineNo">278</span> RequestTooBigException.MAJOR_VERSION, RequestTooBigException.MINOR_VERSION)) {<a name="line.278"></a> +<span class="sourceLineNo">279</span> this.rpcServer.setupResponse(null, reqTooBig, SimpleRpcServer.REQUEST_TOO_BIG_EXCEPTION,<a name="line.279"></a> +<span class="sourceLineNo">280</span> msg);<a name="line.280"></a> +<span class="sourceLineNo">281</span> } else {<a name="line.281"></a> +<span class="sourceLineNo">282</span> this.rpcServer.setupResponse(null, reqTooBig, new DoNotRetryIOException(), msg);<a name="line.282"></a> +<span class="sourceLineNo">283</span> }<a name="line.283"></a> +<span class="sourceLineNo">284</span> // We are going to close the connection, make sure we process the response<a name="line.284"></a> +<span class="sourceLineNo">285</span> // before that. In rare case when this fails, we still close the connection.<a name="line.285"></a> +<span class="sourceLineNo">286</span> responseWriteLock.lock();<a name="line.286"></a> +<span class="sourceLineNo">287</span> try {<a name="line.287"></a> +<span class="sourceLineNo">288</span> this.responder.processResponse(reqTooBig);<a name="line.288"></a> +<span class="sourceLineNo">289</span> } finally {<a name="line.289"></a> +<span class="sourceLineNo">290</span> responseWriteLock.unlock();<a name="line.290"></a> +<span class="sourceLineNo">291</span> }<a name="line.291"></a> +<span class="sourceLineNo">292</span> }<a name="line.292"></a> +<span class="sourceLineNo">293</span> // Close the connection<a name="line.293"></a> +<span class="sourceLineNo">294</span> return -1;<a name="line.294"></a> +<span class="sourceLineNo">295</span> }<a name="line.295"></a> +<span class="sourceLineNo">296</span><a name="line.296"></a> +<span class="sourceLineNo">297</span> // Initialize this.data with a ByteBuff.<a name="line.297"></a> +<span class="sourceLineNo">298</span> // This call will allocate a ByteBuff to read request into and assign to this.data<a name="line.298"></a> +<span class="sourceLineNo">299</span> // Also when we use some buffer(s) from pool, it will create a CallCleanup instance also and<a name="line.299"></a> +<span class="sourceLineNo">300</span> // assign to this.callCleanup<a name="line.300"></a> +<span class="sourceLineNo">301</span> initByteBuffToReadInto(dataLength);<a name="line.301"></a> +<span class="sourceLineNo">302</span><a name="line.302"></a> +<span class="sourceLineNo">303</span> // Increment the rpc count. This counter will be decreased when we write<a name="line.303"></a> +<span class="sourceLineNo">304</span> // the response. If we want the connection to be detected as idle properly, we<a name="line.304"></a> +<span class="sourceLineNo">305</span> // need to keep the inc / dec correct.<a name="line.305"></a> +<span class="sourceLineNo">306</span> incRpcCount();<a name="line.306"></a> +<span class="sourceLineNo">307</span> }<a name="line.307"></a> +<span class="sourceLineNo">308</span><a name="line.308"></a> +<span class="sourceLineNo">309</span> count = channelDataRead(channel, data);<a name="line.309"></a> +<span class="sourceLineNo">310</span><a name="line.310"></a> +<span class="sourceLineNo">311</span> if (count >= 0 && data.remaining() == 0) { // count==0 if dataLength == 0<a name="line.311"></a> +<span class="sourceLineNo">312</span> process();<a name="line.312"></a> +<span class="sourceLineNo">313</span> }<a name="line.313"></a> +<span class="sourceLineNo">314</span><a name="line.314"></a> +<span class="sourceLineNo">315</span> return count;<a name="line.315"></a> +<span class="sourceLineNo">316</span> }<a name="line.316"></a> +<span class="sourceLineNo">317</span><a name="line.317"></a> +<span class="sourceLineNo">318</span> // It creates the ByteBuff and CallCleanup and assign to Connection instance.<a name="line.318"></a> +<span class="sourceLineNo">319</span> private void initByteBuffToReadInto(int length) {<a name="line.319"></a> +<span class="sourceLineNo">320</span> // We create random on heap buffers are read into those when<a name="line.320"></a> +<span class="sourceLineNo">321</span> // 1. ByteBufferPool is not there.<a name="line.321"></a> +<span class="sourceLineNo">322</span> // 2. When the size of the req is very small. Using a large sized (64 KB) buffer from pool is<a name="line.322"></a> +<span class="sourceLineNo">323</span> // waste then. Also if all the reqs are of this size, we will be creating larger sized<a name="line.323"></a> +<span class="sourceLineNo">324</span> // buffers and pool them permanently. This include Scan/Get request and DDL kind of reqs like<a name="line.324"></a> +<span class="sourceLineNo">325</span> // RegionOpen.<a name="line.325"></a> +<span class="sourceLineNo">326</span> // 3. If it is an initial handshake signal or initial connection request. Any way then<a name="line.326"></a> +<span class="sourceLineNo">327</span> // condition 2 itself will match<a name="line.327"></a> +<span class="sourceLineNo">328</span> // 4. 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class="sourceLineNo">337</span> }<a name="line.337"></a> +<span class="sourceLineNo">338</span> }<a name="line.338"></a> +<span class="sourceLineNo">339</span><a name="line.339"></a> +<span class="sourceLineNo">340</span> protected int channelDataRead(ReadableByteChannel channel, ByteBuff buf) throws IOException {<a name="line.340"></a> +<span class="sourceLineNo">341</span> int count = buf.read(channel);<a name="line.341"></a> +<span class="sourceLineNo">342</span> if (count > 0) {<a name="line.342"></a> +<span class="sourceLineNo">343</span> this.rpcServer.metrics.receivedBytes(count);<a name="line.343"></a> +<span class="sourceLineNo">344</span> }<a name="line.344"></a> +<span class="sourceLineNo">345</span> return count;<a name="line.345"></a> +<span class="sourceLineNo">346</span> }<a name="line.346"></a> +<span class="sourceLineNo">347</span><a name="line.347"></a> +<span class="sourceLineNo">348</span> /**<a name="line.348"></a> +<span class="sourceLineNo">349</span> * Process the data buffer and clean the connection state for the next call.<a name="line.349"></a> +<span class="sourceLineNo">350</span> */<a name="line.350"></a> +<span class="sourceLineNo">351</span> private void process() throws IOException, InterruptedException {<a name="line.351"></a> +<span class="sourceLineNo">352</span> data.rewind();<a name="line.352"></a> +<span class="sourceLineNo">353</span> try {<a name="line.353"></a> +<span class="sourceLineNo">354</span> if (skipInitialSaslHandshake) {<a name="line.354"></a> +<span class="sourceLineNo">355</span> skipInitialSaslHandshake = false;<a name="line.355"></a> +<span class="sourceLineNo">356</span> return;<a name="line.356"></a> +<span class="sourceLineNo">357</span> }<a name="line.357"></a> +<span class="sourceLineNo">358</span><a name="line.358"></a> +<span class="sourceLineNo">359</span> if (useSasl) {<a name="line.359"></a> +<span class="sourceLineNo">360</span> saslReadAndProcess(data);<a name="line.360"></a> +<span class="sourceLineNo">361</span> } else {<a name="line.361"></a> +<span class="sourceLineNo">362</span> processOneRpc(data);<a name="line.362"></a> +<span class="sourceLineNo">363</span> }<a name="line.363"></a> +<span class="sourceLineNo">364</span><a name="line.364"></a> +<span class="sourceLineNo">365</span> } finally {<a name="line.365"></a> +<span class="sourceLineNo">366</span> dataLengthBuffer.clear(); // Clean for the next call<a name="line.366"></a> +<span class="sourceLineNo">367</span> data = null; // For the GC<a name="line.367"></a> +<span class="sourceLineNo">368</span> this.callCleanup = null;<a name="line.368"></a> +<span class="sourceLineNo">369</span> }<a name="line.369"></a> +<span class="sourceLineNo">370</span> }<a name="line.370"></a> +<span class="sourceLineNo">371</span><a name="line.371"></a> +<span class="sourceLineNo">372</span> private int doBadPreambleHandling(final String msg) throws IOException {<a name="line.372"></a> +<span class="sourceLineNo">373</span> return doBadPreambleHandling(msg, new FatalConnectionException(msg));<a name="line.373"></a> +<span class="sourceLineNo">374</span> }<a name="line.374"></a> +<span class="sourceLineNo">375</span><a name="line.375"></a> +<span class="sourceLineNo">376</span> private int doBadPreambleHandling(final String msg, final Exception e) throws IOException {<a name="line.376"></a> +<span class="sourceLineNo">377</span> SimpleRpcServer.LOG.warn(msg);<a name="line.377"></a> +<span class="sourceLineNo">378</span> SimpleServerCall fakeCall = new SimpleServerCall(-1, null, null, null, null, null, this, -1,<a name="line.378"></a> +<span class="sourceLineNo">379</span> null, null, System.currentTimeMillis(), 0, this.rpcServer.reservoir,<a name="line.379"></a> +<span class="sourceLineNo">380</span> this.rpcServer.cellBlockBuilder, null, responder);<a name="line.380"></a> +<span class="sourceLineNo">381</span> this.rpcServer.setupResponse(null, fakeCall, e, msg);<a name="line.381"></a> +<span class="sourceLineNo">382</span> this.responder.doRespond(fakeCall);<a name="line.382"></a> +<span class="sourceLineNo">383</span> // Returning -1 closes out the connection.<a name="line.383"></a> +<span class="sourceLineNo">384</span> return -1;<a name="line.384"></a> +<span class="sourceLineNo">385</span> }<a name="line.385"></a> +<span class="sourceLineNo">386</span><a name="line.386"></a> +<span class="sourceLineNo">387</span> @Override<a name="line.387"></a> +<span class="sourceLineNo">388</span> public synchronized void close() {<a name="line.388"></a> +<span class="sourceLineNo">389</span> disposeSasl();<a name="line.389"></a> +<span class="sourceLineNo">390</span> data = null;<a name="line.390"></a> +<span class="sourceLineNo">391</span> callCleanup = null;<a name="line.391"></a> +<span class="sourceLineNo">392</span> if (!channel.isOpen()) return;<a name="line.392"></a> +<span class="sourceLineNo">393</span> try {<a name="line.393"></a> +<span class="sourceLineNo">394</span> socket.shutdownOutput();<a name="line.394"></a> +<span class="sourceLineNo">395</span> } catch (Exception ignored) {<a name="line.395"></a> +<span class="sourceLineNo">396</span> if (SimpleRpcServer.LOG.isTraceEnabled()) {<a name="line.396"></a> +<span class="sourceLineNo">397</span> SimpleRpcServer.LOG.trace("Ignored exception", ignored);<a name="line.397"></a> +<span class="sourceLineNo">398</span> }<a name="line.398"></a> +<span class="sourceLineNo">399</span> }<a name="line.399"></a> +<span class="sourceLineNo">400</span> if (channel.isOpen()) {<a name="line.400"></a> +<span class="sourceLineNo">401</span> try {<a name="line.401"></a> +<span class="sourceLineNo">402</span> channel.close();<a name="line.402"></a> +<span class="sourceLineNo">403</span> } catch (Exception ignored) {<a name="line.403"></a> +<span class="sourceLineNo">404</span> }<a name="line.404"></a> +<span class="sourceLineNo">405</span> }<a name="line.405"></a> +<span class="sourceLineNo">406</span> try {<a name="line.406"></a> +<span class="sourceLineNo">407</span> socket.close();<a name="line.407"></a> +<span class="sourceLineNo">408</span> } catch (Exception ignored) {<a name="line.408"></a> +<span class="sourceLineNo">409</span> if (SimpleRpcServer.LOG.isTraceEnabled()) {<a name="line.409"></a> +<span class="sourceLineNo">410</span> SimpleRpcServer.LOG.trace("Ignored exception", ignored);<a name="line.410"></a> +<span class="sourceLineNo">411</span> }<a name="line.411"></a> +<span class="sourceLineNo">412</span> }<a name="line.412"></a> +<span class="sourceLineNo">413</span> }<a name="line.413"></a> +<span class="sourceLineNo">414</span><a name="line.414"></a> +<span class="sourceLineNo">415</span> @Override<a name="line.415"></a> +<span class="sourceLineNo">416</span> public boolean isConnectionOpen() {<a name="line.416"></a> +<span class="sourceLineNo">417</span> return channel.isOpen();<a name="line.417"></a> +<span 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