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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * software distributed under the License is distributed on an<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * KIND, either express or implied. See the License for the<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * specific language governing permissions and limitations<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * under the License.<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> *<a name="line.18"></a> |
| <span class="sourceLineNo">019</span> */<a name="line.19"></a> |
| <span class="sourceLineNo">020</span>package org.apache.mina.filter.codec;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import java.net.SocketAddress;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import java.util.Queue;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span><a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.mina.core.buffer.IoBuffer;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.mina.core.file.FileRegion;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.mina.core.filterchain.IoFilter;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.mina.core.filterchain.IoFilterAdapter;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.apache.mina.core.filterchain.IoFilterChain;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import org.apache.mina.core.future.DefaultWriteFuture;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import org.apache.mina.core.future.WriteFuture;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import org.apache.mina.core.session.AbstractIoSession;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import org.apache.mina.core.session.AttributeKey;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import org.apache.mina.core.session.IoSession;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import org.apache.mina.core.write.DefaultWriteRequest;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import org.apache.mina.core.write.NothingWrittenException;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span>import org.apache.mina.core.write.WriteRequest;<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>import org.apache.mina.core.write.WriteRequestWrapper;<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>import org.slf4j.Logger;<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>import org.slf4j.LoggerFactory;<a name="line.40"></a> |
| <span class="sourceLineNo">041</span><a name="line.41"></a> |
| <span class="sourceLineNo">042</span>/**<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * An {@link IoFilter} which translates binary or protocol specific data into<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> * message objects and vice versa using {@link ProtocolCodecFactory},<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> * {@link ProtocolEncoder}, or {@link ProtocolDecoder}.<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> *<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * @author <a href="http://mina.apache.org">Apache MINA Project</a><a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * @org.apache.xbean.XBean<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> */<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>public class ProtocolCodecFilter extends IoFilterAdapter {<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> /** A logger for this class */<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> private static final Logger LOGGER = LoggerFactory.getLogger(ProtocolCodecFilter.class);<a name="line.52"></a> |
| <span class="sourceLineNo">053</span><a name="line.53"></a> |
| <span class="sourceLineNo">054</span> private static final Class<?>[] EMPTY_PARAMS = new Class[0];<a name="line.54"></a> |
| <span class="sourceLineNo">055</span><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> private static final IoBuffer EMPTY_BUFFER = IoBuffer.wrap(new byte[0]);<a name="line.56"></a> |
| <span class="sourceLineNo">057</span><a name="line.57"></a> |
| <span class="sourceLineNo">058</span> private static final AttributeKey ENCODER = new AttributeKey(ProtocolCodecFilter.class, "encoder");<a name="line.58"></a> |
| <span class="sourceLineNo">059</span><a name="line.59"></a> |
| <span class="sourceLineNo">060</span> private static final AttributeKey DECODER = new AttributeKey(ProtocolCodecFilter.class, "decoder");<a name="line.60"></a> |
| <span class="sourceLineNo">061</span><a name="line.61"></a> |
| <span class="sourceLineNo">062</span> private static final AttributeKey DECODER_OUT = new AttributeKey(ProtocolCodecFilter.class, "decoderOut");<a name="line.62"></a> |
| <span class="sourceLineNo">063</span><a name="line.63"></a> |
| <span class="sourceLineNo">064</span> private static final AttributeKey ENCODER_OUT = new AttributeKey(ProtocolCodecFilter.class, "encoderOut");<a name="line.64"></a> |
| <span class="sourceLineNo">065</span><a name="line.65"></a> |
| <span class="sourceLineNo">066</span> /** The factory responsible for creating the encoder and decoder */<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> private final ProtocolCodecFactory factory;<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> * Creates a new instance of ProtocolCodecFilter, associating a factory<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> * for the creation of the encoder and decoder.<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> *<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * @param factory The associated factory<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> */<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> public ProtocolCodecFilter(ProtocolCodecFactory factory) {<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> if (factory == null) {<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> throw new IllegalArgumentException("factory");<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> }<a name="line.78"></a> |
| <span class="sourceLineNo">079</span><a name="line.79"></a> |
| <span class="sourceLineNo">080</span> this.factory = factory;<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> }<a name="line.81"></a> |
| <span class="sourceLineNo">082</span><a name="line.82"></a> |
| <span class="sourceLineNo">083</span> /**<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> * Creates a new instance of ProtocolCodecFilter, without any factory.<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> * The encoder/decoder factory will be created as an inner class, using<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> * the two parameters (encoder and decoder).<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> * <a name="line.87"></a> |
| <span class="sourceLineNo">088</span> * @param encoder The class responsible for encoding the message<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> * @param decoder The class responsible for decoding the message<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> */<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> public ProtocolCodecFilter(final ProtocolEncoder encoder, final ProtocolDecoder decoder) {<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> if (encoder == null) {<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> throw new IllegalArgumentException("encoder");<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> }<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> if (decoder == null) {<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> throw new IllegalArgumentException("decoder");<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> }<a name="line.97"></a> |
| <span class="sourceLineNo">098</span><a name="line.98"></a> |
| <span class="sourceLineNo">099</span> // Create the inner Factory based on the two parameters<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> this.factory = new ProtocolCodecFactory() {<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> public ProtocolEncoder getEncoder(IoSession session) {<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> return encoder;<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> public ProtocolDecoder getDecoder(IoSession session) {<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> return decoder;<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> }<a name="line.109"></a> |
| <span class="sourceLineNo">110</span><a name="line.110"></a> |
| <span class="sourceLineNo">111</span> /**<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> * Creates a new instance of ProtocolCodecFilter, without any factory.<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> * The encoder/decoder factory will be created as an inner class, using<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> * the two parameters (encoder and decoder), which are class names. Instances<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> * for those classes will be created in this constructor.<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> * <a name="line.116"></a> |
| <span class="sourceLineNo">117</span> * @param encoderClass The class responsible for encoding the message<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> * @param decoderClass The class responsible for decoding the message<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> */<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> public ProtocolCodecFilter(final Class<? extends ProtocolEncoder> encoderClass,<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> final Class<? extends ProtocolDecoder> decoderClass) {<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> if (encoderClass == null) {<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> throw new IllegalArgumentException("encoderClass");<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> }<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> if (decoderClass == null) {<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> throw new IllegalArgumentException("decoderClass");<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> }<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> if (!ProtocolEncoder.class.isAssignableFrom(encoderClass)) {<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> throw new IllegalArgumentException("encoderClass: " + encoderClass.getName());<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> }<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> if (!ProtocolDecoder.class.isAssignableFrom(decoderClass)) {<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> throw new IllegalArgumentException("decoderClass: " + decoderClass.getName());<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> }<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> try {<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> encoderClass.getConstructor(EMPTY_PARAMS);<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> } catch (NoSuchMethodException e) {<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> throw new IllegalArgumentException("encoderClass doesn't have a public default constructor.");<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> }<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> try {<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> decoderClass.getConstructor(EMPTY_PARAMS);<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> } catch (NoSuchMethodException e) {<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> throw new IllegalArgumentException("decoderClass doesn't have a public default constructor.");<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> }<a name="line.143"></a> |
| <span class="sourceLineNo">144</span><a name="line.144"></a> |
| <span class="sourceLineNo">145</span> final ProtocolEncoder encoder;<a name="line.145"></a> |
| <span class="sourceLineNo">146</span><a name="line.146"></a> |
| <span class="sourceLineNo">147</span> try {<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> encoder = encoderClass.newInstance();<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> } catch (Exception e) {<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> throw new IllegalArgumentException("encoderClass cannot be initialized");<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> }<a name="line.151"></a> |
| <span class="sourceLineNo">152</span><a name="line.152"></a> |
| <span class="sourceLineNo">153</span> final ProtocolDecoder decoder;<a name="line.153"></a> |
| <span class="sourceLineNo">154</span><a name="line.154"></a> |
| <span class="sourceLineNo">155</span> try {<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> decoder = decoderClass.newInstance();<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> } catch (Exception e) {<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> throw new IllegalArgumentException("decoderClass cannot be initialized");<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> // Create the inner factory based on the two parameters.<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> this.factory = new ProtocolCodecFactory() {<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> public ProtocolEncoder getEncoder(IoSession session) throws Exception {<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> return encoder;<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> }<a name="line.165"></a> |
| <span class="sourceLineNo">166</span><a name="line.166"></a> |
| <span class="sourceLineNo">167</span> public ProtocolDecoder getDecoder(IoSession session) throws Exception {<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> return decoder;<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> }<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> };<a name="line.170"></a> |
| <span class="sourceLineNo">171</span> }<a name="line.171"></a> |
| <span class="sourceLineNo">172</span><a name="line.172"></a> |
| <span class="sourceLineNo">173</span> /**<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> * Get the encoder instance from a given session.<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> *<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> * @param session The associated session we will get the encoder from<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> * @return The encoder instance, if any<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> */<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> public ProtocolEncoder getEncoder(IoSession session) {<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> return (ProtocolEncoder) session.getAttribute(ENCODER);<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> @Override<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> public void onPreAdd(IoFilterChain parent, String name, NextFilter nextFilter) throws Exception {<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> if (parent.contains(this)) {<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> throw new IllegalArgumentException(<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> "You can't add the same filter instance more than once. Create another instance and add it.");<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><a name="line.190"></a> |
| <span class="sourceLineNo">191</span> @Override<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> public void onPostRemove(IoFilterChain parent, String name, NextFilter nextFilter) throws Exception {<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> // Clean everything<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> disposeCodec(parent.getSession());<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> }<a name="line.195"></a> |
| <span class="sourceLineNo">196</span><a name="line.196"></a> |
| <span class="sourceLineNo">197</span> /**<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> * Process the incoming message, calling the session decoder. As the incoming<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> * buffer might contains more than one messages, we have to loop until the decoder<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> * throws an exception.<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> * <a name="line.201"></a> |
| <span class="sourceLineNo">202</span> * while ( buffer not empty )<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> * try<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> * decode ( buffer )<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> * catch<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> * break;<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> * <a name="line.207"></a> |
| <span class="sourceLineNo">208</span> */<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> @Override<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> public void messageReceived(NextFilter nextFilter, IoSession session, Object message) throws Exception {<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> LOGGER.debug("Processing a MESSAGE_RECEIVED for session {}", session.getId());<a name="line.211"></a> |
| <span class="sourceLineNo">212</span><a name="line.212"></a> |
| <span class="sourceLineNo">213</span> if (!(message instanceof IoBuffer)) {<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> nextFilter.messageReceived(session, message);<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> return;<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> IoBuffer in = (IoBuffer) message;<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> ProtocolDecoder decoder = factory.getDecoder(session);<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> ProtocolDecoderOutput decoderOut = getDecoderOut(session, nextFilter);<a name="line.220"></a> |
| <span class="sourceLineNo">221</span><a name="line.221"></a> |
| <span class="sourceLineNo">222</span> // Loop until we don't have anymore byte in the buffer,<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> // or until the decoder throws an unrecoverable exception or<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> // can't decoder a message, because there are not enough<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> // data in the buffer<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> while (in.hasRemaining()) {<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> int oldPos = in.position();<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> try {<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> synchronized (session) {<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> // Call the decoder with the read bytes<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> decoder.decode(session, in, decoderOut);<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> }<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> // Finish decoding if no exception was thrown.<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> decoderOut.flush(nextFilter, session);<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> } catch (Exception e) {<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> ProtocolDecoderException pde;<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> if (e instanceof ProtocolDecoderException) {<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> pde = (ProtocolDecoderException) e;<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> } else {<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> pde = new ProtocolDecoderException(e);<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> }<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> if (pde.getHexdump() == null) {<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> // Generate a message hex dump<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> int curPos = in.position();<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> in.position(oldPos);<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> pde.setHexdump(in.getHexDump());<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> in.position(curPos);<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> }<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> // Fire the exceptionCaught event.<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> decoderOut.flush(nextFilter, session);<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> nextFilter.exceptionCaught(session, pde);<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> // Retry only if the type of the caught exception is<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> // recoverable and the buffer position has changed.<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> // We check buffer position additionally to prevent an<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> // infinite loop.<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> if (!(e instanceof RecoverableProtocolDecoderException) || (in.position() == oldPos)) {<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> break;<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> }<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> }<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> }<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> }<a name="line.261"></a> |
| <span class="sourceLineNo">262</span><a name="line.262"></a> |
| <span class="sourceLineNo">263</span> @Override<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> public void messageSent(NextFilter nextFilter, IoSession session, WriteRequest writeRequest) throws Exception {<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> if (writeRequest instanceof EncodedWriteRequest) {<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> return;<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> }<a name="line.267"></a> |
| <span class="sourceLineNo">268</span><a name="line.268"></a> |
| <span class="sourceLineNo">269</span> if (writeRequest instanceof MessageWriteRequest) {<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> MessageWriteRequest wrappedRequest = (MessageWriteRequest) writeRequest;<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> nextFilter.messageSent(session, wrappedRequest.getParentRequest());<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> } else {<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> nextFilter.messageSent(session, writeRequest);<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> }<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> }<a name="line.275"></a> |
| <span class="sourceLineNo">276</span><a name="line.276"></a> |
| <span class="sourceLineNo">277</span> @Override<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> public void filterWrite(NextFilter nextFilter, IoSession session, WriteRequest writeRequest) throws Exception {<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> Object message = writeRequest.getMessage();<a name="line.279"></a> |
| <span class="sourceLineNo">280</span><a name="line.280"></a> |
| <span class="sourceLineNo">281</span> // Bypass the encoding if the message is contained in a IoBuffer,<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> // as it has already been encoded before<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> if ((message instanceof IoBuffer) || (message instanceof FileRegion)) {<a name="line.283"></a> |
| <span class="sourceLineNo">284</span> nextFilter.filterWrite(session, writeRequest);<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> return;<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> }<a name="line.286"></a> |
| <span class="sourceLineNo">287</span><a name="line.287"></a> |
| <span class="sourceLineNo">288</span> // Get the encoder in the session<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> ProtocolEncoder encoder = factory.getEncoder(session);<a name="line.289"></a> |
| <span class="sourceLineNo">290</span><a name="line.290"></a> |
| <span class="sourceLineNo">291</span> ProtocolEncoderOutput encoderOut = getEncoderOut(session, nextFilter, writeRequest);<a name="line.291"></a> |
| <span class="sourceLineNo">292</span><a name="line.292"></a> |
| <span class="sourceLineNo">293</span> if (encoder == null) {<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> throw new ProtocolEncoderException("The encoder is null for the session " + session);<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> try {<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> // Now we can try to encode the response<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> encoder.encode(session, message, encoderOut);<a name="line.299"></a> |
| <span class="sourceLineNo">300</span><a name="line.300"></a> |
| <span class="sourceLineNo">301</span> // Send it directly<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> Queue<Object> bufferQueue = ((AbstractProtocolEncoderOutput) encoderOut).getMessageQueue();<a name="line.302"></a> |
| <span class="sourceLineNo">303</span><a name="line.303"></a> |
| <span class="sourceLineNo">304</span> // Write all the encoded messages now<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> while (!bufferQueue.isEmpty()) {<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> Object encodedMessage = bufferQueue.poll();<a name="line.306"></a> |
| <span class="sourceLineNo">307</span><a name="line.307"></a> |
| <span class="sourceLineNo">308</span> if (encodedMessage == null) {<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> break;<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> }<a name="line.310"></a> |
| <span class="sourceLineNo">311</span><a name="line.311"></a> |
| <span class="sourceLineNo">312</span> // Flush only when the buffer has remaining.<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> if (!(encodedMessage instanceof IoBuffer) || ((IoBuffer) encodedMessage).hasRemaining()) {<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> SocketAddress destination = writeRequest.getDestination();<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> WriteRequest encodedWriteRequest = new EncodedWriteRequest(encodedMessage, null, destination);<a name="line.315"></a> |
| <span class="sourceLineNo">316</span><a name="line.316"></a> |
| <span class="sourceLineNo">317</span> nextFilter.filterWrite(session, encodedWriteRequest);<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> }<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> }<a name="line.319"></a> |
| <span class="sourceLineNo">320</span><a name="line.320"></a> |
| <span class="sourceLineNo">321</span> // Call the next filter<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> nextFilter.filterWrite(session, new MessageWriteRequest(writeRequest));<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> } catch (Exception e) {<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> ProtocolEncoderException pee;<a name="line.324"></a> |
| <span class="sourceLineNo">325</span><a name="line.325"></a> |
| <span class="sourceLineNo">326</span> // Generate the correct exception<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> if (e instanceof ProtocolEncoderException) {<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> pee = (ProtocolEncoderException) e;<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> } else {<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> pee = new ProtocolEncoderException(e);<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> }<a name="line.331"></a> |
| <span class="sourceLineNo">332</span><a name="line.332"></a> |
| <span class="sourceLineNo">333</span> throw pee;<a name="line.333"></a> |
| <span class="sourceLineNo">334</span> }<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> }<a name="line.335"></a> |
| <span class="sourceLineNo">336</span><a name="line.336"></a> |
| <span class="sourceLineNo">337</span> @Override<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> public void sessionClosed(NextFilter nextFilter, IoSession session) throws Exception {<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> // Call finishDecode() first when a connection is closed.<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> ProtocolDecoder decoder = factory.getDecoder(session);<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> ProtocolDecoderOutput decoderOut = getDecoderOut(session, nextFilter);<a name="line.341"></a> |
| <span class="sourceLineNo">342</span><a name="line.342"></a> |
| <span class="sourceLineNo">343</span> try {<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> decoder.finishDecode(session, decoderOut);<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> } catch (Exception e) {<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> ProtocolDecoderException pde;<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> if (e instanceof ProtocolDecoderException) {<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> pde = (ProtocolDecoderException) e;<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> } else {<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> pde = new ProtocolDecoderException(e);<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> }<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> throw pde;<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> } finally {<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> // Dispose everything<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> disposeCodec(session);<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> decoderOut.flush(nextFilter, session);<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> // Call the next filter<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> nextFilter.sessionClosed(session);<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> }<a name="line.361"></a> |
| <span class="sourceLineNo">362</span><a name="line.362"></a> |
| <span class="sourceLineNo">363</span> private static class EncodedWriteRequest extends DefaultWriteRequest {<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> public EncodedWriteRequest(Object encodedMessage, WriteFuture future, SocketAddress destination) {<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> super(encodedMessage, future, destination);<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> }<a name="line.366"></a> |
| <span class="sourceLineNo">367</span><a name="line.367"></a> |
| <span class="sourceLineNo">368</span> public boolean isEncoded() {<a name="line.368"></a> |
| <span class="sourceLineNo">369</span> return true;<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><a name="line.372"></a> |
| <span class="sourceLineNo">373</span> private static class MessageWriteRequest extends WriteRequestWrapper {<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> public MessageWriteRequest(WriteRequest writeRequest) {<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> super(writeRequest);<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> }<a name="line.376"></a> |
| <span class="sourceLineNo">377</span><a name="line.377"></a> |
| <span class="sourceLineNo">378</span> @Override<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> public Object getMessage() {<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> return EMPTY_BUFFER;<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> }<a name="line.381"></a> |
| <span class="sourceLineNo">382</span><a name="line.382"></a> |
| <span class="sourceLineNo">383</span> @Override<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> public String toString() {<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> return "MessageWriteRequest, parent : " + super.toString();<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> }<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> }<a name="line.387"></a> |
| <span class="sourceLineNo">388</span><a name="line.388"></a> |
| <span class="sourceLineNo">389</span> private static class ProtocolDecoderOutputImpl extends AbstractProtocolDecoderOutput {<a name="line.389"></a> |
| <span class="sourceLineNo">390</span> public ProtocolDecoderOutputImpl() {<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> // Do nothing<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> }<a name="line.392"></a> |
| <span class="sourceLineNo">393</span><a name="line.393"></a> |
| <span class="sourceLineNo">394</span> public void flush(NextFilter nextFilter, IoSession session) {<a name="line.394"></a> |
| <span class="sourceLineNo">395</span> Queue<Object> messageQueue = getMessageQueue();<a name="line.395"></a> |
| <span class="sourceLineNo">396</span><a name="line.396"></a> |
| <span class="sourceLineNo">397</span> while (!messageQueue.isEmpty()) {<a name="line.397"></a> |
| <span class="sourceLineNo">398</span> nextFilter.messageReceived(session, messageQueue.poll());<a name="line.398"></a> |
| <span class="sourceLineNo">399</span> }<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> }<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> }<a name="line.401"></a> |
| <span class="sourceLineNo">402</span><a name="line.402"></a> |
| <span class="sourceLineNo">403</span> private static class ProtocolEncoderOutputImpl extends AbstractProtocolEncoderOutput {<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> private final IoSession session;<a name="line.404"></a> |
| <span class="sourceLineNo">405</span><a name="line.405"></a> |
| <span class="sourceLineNo">406</span> private final NextFilter nextFilter;<a name="line.406"></a> |
| <span class="sourceLineNo">407</span><a name="line.407"></a> |
| <span class="sourceLineNo">408</span> /** The WriteRequest destination */<a name="line.408"></a> |
| <span class="sourceLineNo">409</span> private final SocketAddress destination;<a name="line.409"></a> |
| <span class="sourceLineNo">410</span><a name="line.410"></a> |
| <span class="sourceLineNo">411</span> public ProtocolEncoderOutputImpl(IoSession session, NextFilter nextFilter, WriteRequest writeRequest) {<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> this.session = session;<a name="line.412"></a> |
| <span class="sourceLineNo">413</span> this.nextFilter = nextFilter;<a name="line.413"></a> |
| <span class="sourceLineNo">414</span><a name="line.414"></a> |
| <span class="sourceLineNo">415</span> // Only store the destination, not the full WriteRequest.<a name="line.415"></a> |
| <span class="sourceLineNo">416</span> destination = writeRequest.getDestination();<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> }<a name="line.417"></a> |
| <span class="sourceLineNo">418</span><a name="line.418"></a> |
| <span class="sourceLineNo">419</span> public WriteFuture flush() {<a name="line.419"></a> |
| <span class="sourceLineNo">420</span> Queue<Object> bufferQueue = getMessageQueue();<a name="line.420"></a> |
| <span class="sourceLineNo">421</span> WriteFuture future = null;<a name="line.421"></a> |
| <span class="sourceLineNo">422</span><a name="line.422"></a> |
| <span class="sourceLineNo">423</span> while (!bufferQueue.isEmpty()) {<a name="line.423"></a> |
| <span class="sourceLineNo">424</span> Object encodedMessage = bufferQueue.poll();<a name="line.424"></a> |
| <span class="sourceLineNo">425</span><a name="line.425"></a> |
| <span class="sourceLineNo">426</span> if (encodedMessage == null) {<a name="line.426"></a> |
| <span class="sourceLineNo">427</span> break;<a name="line.427"></a> |
| <span class="sourceLineNo">428</span> }<a name="line.428"></a> |
| <span class="sourceLineNo">429</span><a name="line.429"></a> |
| <span class="sourceLineNo">430</span> // Flush only when the buffer has remaining.<a name="line.430"></a> |
| <span class="sourceLineNo">431</span> if (!(encodedMessage instanceof IoBuffer) || ((IoBuffer) encodedMessage).hasRemaining()) {<a name="line.431"></a> |
| <span class="sourceLineNo">432</span> future = new DefaultWriteFuture(session);<a name="line.432"></a> |
| <span class="sourceLineNo">433</span> nextFilter.filterWrite(session, new EncodedWriteRequest(encodedMessage, future, destination));<a name="line.433"></a> |
| <span class="sourceLineNo">434</span> }<a name="line.434"></a> |
| <span class="sourceLineNo">435</span> }<a name="line.435"></a> |
| <span class="sourceLineNo">436</span><a name="line.436"></a> |
| <span class="sourceLineNo">437</span> if (future == null) {<a name="line.437"></a> |
| <span class="sourceLineNo">438</span> // Creates an empty writeRequest containing the destination<a name="line.438"></a> |
| <span class="sourceLineNo">439</span> future = DefaultWriteFuture.newNotWrittenFuture(session, new NothingWrittenException(AbstractIoSession.MESSAGE_SENT_REQUEST));<a name="line.439"></a> |
| <span class="sourceLineNo">440</span> }<a name="line.440"></a> |
| <span class="sourceLineNo">441</span><a name="line.441"></a> |
| <span class="sourceLineNo">442</span> return future;<a name="line.442"></a> |
| <span class="sourceLineNo">443</span> }<a name="line.443"></a> |
| <span class="sourceLineNo">444</span> }<a name="line.444"></a> |
| <span class="sourceLineNo">445</span><a name="line.445"></a> |
| <span class="sourceLineNo">446</span> //----------- Helper methods ---------------------------------------------<a name="line.446"></a> |
| <span class="sourceLineNo">447</span> /**<a name="line.447"></a> |
| <span class="sourceLineNo">448</span> * Dispose the encoder, decoder, and the callback for the decoded<a name="line.448"></a> |
| <span class="sourceLineNo">449</span> * messages.<a name="line.449"></a> |
| <span class="sourceLineNo">450</span> */<a name="line.450"></a> |
| <span class="sourceLineNo">451</span> private void disposeCodec(IoSession session) {<a name="line.451"></a> |
| <span class="sourceLineNo">452</span> // We just remove the two instances of encoder/decoder to release resources<a name="line.452"></a> |
| <span class="sourceLineNo">453</span> // from the session<a name="line.453"></a> |
| <span class="sourceLineNo">454</span> disposeEncoder(session);<a name="line.454"></a> |
| <span class="sourceLineNo">455</span> disposeDecoder(session);<a name="line.455"></a> |
| <span class="sourceLineNo">456</span><a name="line.456"></a> |
| <span class="sourceLineNo">457</span> // We also remove the callback<a name="line.457"></a> |
| <span class="sourceLineNo">458</span> disposeDecoderOut(session);<a name="line.458"></a> |
| <span class="sourceLineNo">459</span> }<a name="line.459"></a> |
| <span class="sourceLineNo">460</span><a name="line.460"></a> |
| <span class="sourceLineNo">461</span> /**<a name="line.461"></a> |
| <span class="sourceLineNo">462</span> * Dispose the encoder, removing its instance from the<a name="line.462"></a> |
| <span class="sourceLineNo">463</span> * session's attributes, and calling the associated<a name="line.463"></a> |
| <span class="sourceLineNo">464</span> * dispose method.<a name="line.464"></a> |
| <span class="sourceLineNo">465</span> */<a name="line.465"></a> |
| <span class="sourceLineNo">466</span> private void disposeEncoder(IoSession session) {<a name="line.466"></a> |
| <span class="sourceLineNo">467</span> ProtocolEncoder encoder = (ProtocolEncoder) session.removeAttribute(ENCODER);<a name="line.467"></a> |
| <span class="sourceLineNo">468</span> if (encoder == null) {<a name="line.468"></a> |
| <span class="sourceLineNo">469</span> return;<a name="line.469"></a> |
| <span class="sourceLineNo">470</span> }<a name="line.470"></a> |
| <span class="sourceLineNo">471</span><a name="line.471"></a> |
| <span class="sourceLineNo">472</span> try {<a name="line.472"></a> |
| <span class="sourceLineNo">473</span> encoder.dispose(session);<a name="line.473"></a> |
| <span class="sourceLineNo">474</span> } catch (Exception e) {<a name="line.474"></a> |
| <span class="sourceLineNo">475</span> LOGGER.warn("Failed to dispose: " + encoder.getClass().getName() + " (" + encoder + ')');<a name="line.475"></a> |
| <span class="sourceLineNo">476</span> }<a name="line.476"></a> |
| <span class="sourceLineNo">477</span> }<a name="line.477"></a> |
| <span class="sourceLineNo">478</span><a name="line.478"></a> |
| <span class="sourceLineNo">479</span> /**<a name="line.479"></a> |
| <span class="sourceLineNo">480</span> * Dispose the decoder, removing its instance from the<a name="line.480"></a> |
| <span class="sourceLineNo">481</span> * session's attributes, and calling the associated<a name="line.481"></a> |
| <span class="sourceLineNo">482</span> * dispose method.<a name="line.482"></a> |
| <span class="sourceLineNo">483</span> */<a name="line.483"></a> |
| <span class="sourceLineNo">484</span> private void disposeDecoder(IoSession session) {<a name="line.484"></a> |
| <span class="sourceLineNo">485</span> ProtocolDecoder decoder = (ProtocolDecoder) session.removeAttribute(DECODER);<a name="line.485"></a> |
| <span class="sourceLineNo">486</span> if (decoder == null) {<a name="line.486"></a> |
| <span class="sourceLineNo">487</span> return;<a name="line.487"></a> |
| <span class="sourceLineNo">488</span> }<a name="line.488"></a> |
| <span class="sourceLineNo">489</span><a name="line.489"></a> |
| <span class="sourceLineNo">490</span> try {<a name="line.490"></a> |
| <span class="sourceLineNo">491</span> decoder.dispose(session);<a name="line.491"></a> |
| <span class="sourceLineNo">492</span> } catch (Exception e) {<a name="line.492"></a> |
| <span class="sourceLineNo">493</span> LOGGER.warn("Failed to dispose: " + decoder.getClass().getName() + " (" + decoder + ')');<a name="line.493"></a> |
| <span class="sourceLineNo">494</span> }<a name="line.494"></a> |
| <span class="sourceLineNo">495</span> }<a name="line.495"></a> |
| <span class="sourceLineNo">496</span><a name="line.496"></a> |
| <span class="sourceLineNo">497</span> /**<a name="line.497"></a> |
| <span class="sourceLineNo">498</span> * Return a reference to the decoder callback. If it's not already created<a name="line.498"></a> |
| <span class="sourceLineNo">499</span> * and stored into the session, we create a new instance.<a name="line.499"></a> |
| <span class="sourceLineNo">500</span> */<a name="line.500"></a> |
| <span class="sourceLineNo">501</span> private ProtocolDecoderOutput getDecoderOut(IoSession session, NextFilter nextFilter) {<a name="line.501"></a> |
| <span class="sourceLineNo">502</span> ProtocolDecoderOutput out = (ProtocolDecoderOutput) session.getAttribute(DECODER_OUT);<a name="line.502"></a> |
| <span class="sourceLineNo">503</span><a name="line.503"></a> |
| <span class="sourceLineNo">504</span> if (out == null) {<a name="line.504"></a> |
| <span class="sourceLineNo">505</span> // Create a new instance, and stores it into the session<a name="line.505"></a> |
| <span class="sourceLineNo">506</span> out = new ProtocolDecoderOutputImpl();<a name="line.506"></a> |
| <span class="sourceLineNo">507</span> session.setAttribute(DECODER_OUT, out);<a name="line.507"></a> |
| <span class="sourceLineNo">508</span> }<a name="line.508"></a> |
| <span class="sourceLineNo">509</span><a name="line.509"></a> |
| <span class="sourceLineNo">510</span> return out;<a name="line.510"></a> |
| <span class="sourceLineNo">511</span> }<a name="line.511"></a> |
| <span class="sourceLineNo">512</span><a name="line.512"></a> |
| <span class="sourceLineNo">513</span> private ProtocolEncoderOutput getEncoderOut(IoSession session, NextFilter nextFilter, WriteRequest writeRequest) {<a name="line.513"></a> |
| <span class="sourceLineNo">514</span> ProtocolEncoderOutput out = (ProtocolEncoderOutput) session.getAttribute(ENCODER_OUT);<a name="line.514"></a> |
| <span class="sourceLineNo">515</span><a name="line.515"></a> |
| <span class="sourceLineNo">516</span> if (out == null) {<a name="line.516"></a> |
| <span class="sourceLineNo">517</span> // Create a new instance, and stores it into the session<a name="line.517"></a> |
| <span class="sourceLineNo">518</span> out = new ProtocolEncoderOutputImpl(session, nextFilter, writeRequest);<a name="line.518"></a> |
| <span class="sourceLineNo">519</span> session.setAttribute(ENCODER_OUT, out);<a name="line.519"></a> |
| <span class="sourceLineNo">520</span> }<a name="line.520"></a> |
| <span class="sourceLineNo">521</span><a name="line.521"></a> |
| <span class="sourceLineNo">522</span> return out;<a name="line.522"></a> |
| <span class="sourceLineNo">523</span> }<a name="line.523"></a> |
| <span class="sourceLineNo">524</span><a name="line.524"></a> |
| <span class="sourceLineNo">525</span> /**<a name="line.525"></a> |
| <span class="sourceLineNo">526</span> * Remove the decoder callback from the session's attributes.<a name="line.526"></a> |
| <span class="sourceLineNo">527</span> */<a name="line.527"></a> |
| <span class="sourceLineNo">528</span> private void disposeDecoderOut(IoSession session) {<a name="line.528"></a> |
| <span class="sourceLineNo">529</span> session.removeAttribute(DECODER_OUT);<a name="line.529"></a> |
| <span class="sourceLineNo">530</span> }<a name="line.530"></a> |
| <span class="sourceLineNo">531</span>}<a name="line.531"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
