| <!DOCTYPE HTML> |
| <html lang="en"> |
| <head> |
| <!-- Generated by javadoc (17) --> |
| <title>Source code</title> |
| <meta name="viewport" content="width=device-width, initial-scale=1"> |
| <meta name="description" content="source: package: org.apache.hadoop.hbase.ipc, class: PreambleCallHandler"> |
| <meta name="generator" content="javadoc/SourceToHTMLConverter"> |
| <link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style"> |
| </head> |
| <body class="source-page"> |
| <main role="main"> |
| <div class="source-container"> |
| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.ipc;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import java.util.HashMap;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.util.concurrent.TimeUnit;</span> |
| <span class="source-line-no">022</span><span id="line-22">import org.apache.hadoop.hbase.exceptions.ConnectionClosedException;</span> |
| <span class="source-line-no">023</span><span id="line-23">import org.apache.hadoop.hbase.util.NettyFutureUtils;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">025</span><span id="line-25"></span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hbase.thirdparty.io.netty.buffer.ByteBuf;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hbase.thirdparty.io.netty.buffer.ByteBufInputStream;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hbase.thirdparty.io.netty.buffer.Unpooled;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hbase.thirdparty.io.netty.channel.ChannelPipeline;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hbase.thirdparty.io.netty.channel.SimpleChannelInboundHandler;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hbase.thirdparty.io.netty.handler.codec.LengthFieldBasedFrameDecoder;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.apache.hbase.thirdparty.io.netty.handler.timeout.ReadTimeoutHandler;</span> |
| <span class="source-line-no">034</span><span id="line-34"></span> |
| <span class="source-line-no">035</span><span id="line-35">/**</span> |
| <span class="source-line-no">036</span><span id="line-36"> * Used to decode preamble calls.</span> |
| <span class="source-line-no">037</span><span id="line-37"> */</span> |
| <span class="source-line-no">038</span><span id="line-38">@InterfaceAudience.Private</span> |
| <span class="source-line-no">039</span><span id="line-39">class PreambleCallHandler extends SimpleChannelInboundHandler<ByteBuf> {</span> |
| <span class="source-line-no">040</span><span id="line-40"></span> |
| <span class="source-line-no">041</span><span id="line-41"> private final NettyRpcConnection conn;</span> |
| <span class="source-line-no">042</span><span id="line-42"></span> |
| <span class="source-line-no">043</span><span id="line-43"> private final byte[] preambleHeader;</span> |
| <span class="source-line-no">044</span><span id="line-44"></span> |
| <span class="source-line-no">045</span><span id="line-45"> private final Call preambleCall;</span> |
| <span class="source-line-no">046</span><span id="line-46"></span> |
| <span class="source-line-no">047</span><span id="line-47"> PreambleCallHandler(NettyRpcConnection conn, byte[] preambleHeader, Call preambleCall) {</span> |
| <span class="source-line-no">048</span><span id="line-48"> this.conn = conn;</span> |
| <span class="source-line-no">049</span><span id="line-49"> this.preambleHeader = preambleHeader;</span> |
| <span class="source-line-no">050</span><span id="line-50"> this.preambleCall = preambleCall;</span> |
| <span class="source-line-no">051</span><span id="line-51"> }</span> |
| <span class="source-line-no">052</span><span id="line-52"></span> |
| <span class="source-line-no">053</span><span id="line-53"> @Override</span> |
| <span class="source-line-no">054</span><span id="line-54"> public void handlerAdded(ChannelHandlerContext ctx) throws Exception {</span> |
| <span class="source-line-no">055</span><span id="line-55"> NettyFutureUtils.safeWriteAndFlush(ctx,</span> |
| <span class="source-line-no">056</span><span id="line-56"> Unpooled.directBuffer(preambleHeader.length).writeBytes(preambleHeader));</span> |
| <span class="source-line-no">057</span><span id="line-57"> }</span> |
| <span class="source-line-no">058</span><span id="line-58"></span> |
| <span class="source-line-no">059</span><span id="line-59"> @Override</span> |
| <span class="source-line-no">060</span><span id="line-60"> protected void channelRead0(ChannelHandlerContext ctx, ByteBuf buf) throws Exception {</span> |
| <span class="source-line-no">061</span><span id="line-61"> try {</span> |
| <span class="source-line-no">062</span><span id="line-62"> conn.readResponse(new ByteBufInputStream(buf), new HashMap<>(), preambleCall,</span> |
| <span class="source-line-no">063</span><span id="line-63"> remoteExc -> exceptionCaught(ctx, remoteExc));</span> |
| <span class="source-line-no">064</span><span id="line-64"> } finally {</span> |
| <span class="source-line-no">065</span><span id="line-65"> ChannelPipeline p = ctx.pipeline();</span> |
| <span class="source-line-no">066</span><span id="line-66"> p.remove("PreambleCallReadTimeoutHandler");</span> |
| <span class="source-line-no">067</span><span id="line-67"> p.remove("PreambleCallFrameDecoder");</span> |
| <span class="source-line-no">068</span><span id="line-68"> p.remove(this);</span> |
| <span class="source-line-no">069</span><span id="line-69"> }</span> |
| <span class="source-line-no">070</span><span id="line-70"> }</span> |
| <span class="source-line-no">071</span><span id="line-71"></span> |
| <span class="source-line-no">072</span><span id="line-72"> @Override</span> |
| <span class="source-line-no">073</span><span id="line-73"> public void channelInactive(ChannelHandlerContext ctx) throws Exception {</span> |
| <span class="source-line-no">074</span><span id="line-74"> preambleCall.setException(new ConnectionClosedException("Connection closed"));</span> |
| <span class="source-line-no">075</span><span id="line-75"> ctx.fireChannelInactive();</span> |
| <span class="source-line-no">076</span><span id="line-76"> }</span> |
| <span class="source-line-no">077</span><span id="line-77"></span> |
| <span class="source-line-no">078</span><span id="line-78"> @Override</span> |
| <span class="source-line-no">079</span><span id="line-79"> public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {</span> |
| <span class="source-line-no">080</span><span id="line-80"> preambleCall.setException(IPCUtil.toIOE(cause));</span> |
| <span class="source-line-no">081</span><span id="line-81"> }</span> |
| <span class="source-line-no">082</span><span id="line-82"></span> |
| <span class="source-line-no">083</span><span id="line-83"> public static void setup(ChannelPipeline pipeline, int readTimeoutMs, NettyRpcConnection conn,</span> |
| <span class="source-line-no">084</span><span id="line-84"> byte[] preambleHeader, Call preambleCall) {</span> |
| <span class="source-line-no">085</span><span id="line-85"> // we do not use single decode here, as for a preamble call, we do not expect the server side</span> |
| <span class="source-line-no">086</span><span id="line-86"> // will return multiple responses</span> |
| <span class="source-line-no">087</span><span id="line-87"> pipeline</span> |
| <span class="source-line-no">088</span><span id="line-88"> .addBefore(BufferCallBeforeInitHandler.NAME, "PreambleCallReadTimeoutHandler",</span> |
| <span class="source-line-no">089</span><span id="line-89"> new ReadTimeoutHandler(readTimeoutMs, TimeUnit.MILLISECONDS))</span> |
| <span class="source-line-no">090</span><span id="line-90"> .addBefore(BufferCallBeforeInitHandler.NAME, "PreambleCallFrameDecoder",</span> |
| <span class="source-line-no">091</span><span id="line-91"> new LengthFieldBasedFrameDecoder(Integer.MAX_VALUE, 0, 4))</span> |
| <span class="source-line-no">092</span><span id="line-92"> .addBefore(BufferCallBeforeInitHandler.NAME, "PreambleCallHandler",</span> |
| <span class="source-line-no">093</span><span id="line-93"> new PreambleCallHandler(conn, preambleHeader, preambleCall));</span> |
| <span class="source-line-no">094</span><span id="line-94"> }</span> |
| <span class="source-line-no">095</span><span id="line-95">}</span> |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
