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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.net;</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.io.Closeable;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.io.IOException;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.net.InetAddress;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.net.InetSocketAddress;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.net.ServerSocket;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.function.Supplier;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.slf4j.Logger;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">028</span><span id="line-28"></span> |
| <span class="source-line-no">029</span><span id="line-29">/**</span> |
| <span class="source-line-no">030</span><span id="line-30"> * Utility to generate a bound socket. Useful testing for BindException. Use one of the Constructors</span> |
| <span class="source-line-no">031</span><span id="line-31"> * to create an instance of this class. On creation it will have put up a ServerSocket on a random</span> |
| <span class="source-line-no">032</span><span id="line-32"> * port. Get the port it is bound to using {@link #getPort()}. In your test, then try to start a</span> |
| <span class="source-line-no">033</span><span id="line-33"> * Server using same port to generate a BindException. Call {@link #close()} when done to shut down</span> |
| <span class="source-line-no">034</span><span id="line-34"> * the Socket.</span> |
| <span class="source-line-no">035</span><span id="line-35"> */</span> |
| <span class="source-line-no">036</span><span id="line-36">public final class BoundSocketMaker implements Closeable {</span> |
| <span class="source-line-no">037</span><span id="line-37"> private static final Logger LOG = LoggerFactory.getLogger(BoundSocketMaker.class);</span> |
| <span class="source-line-no">038</span><span id="line-38"> private final ServerSocket socket;</span> |
| <span class="source-line-no">039</span><span id="line-39"></span> |
| <span class="source-line-no">040</span><span id="line-40"> private BoundSocketMaker() {</span> |
| <span class="source-line-no">041</span><span id="line-41"> this.socket = null;</span> |
| <span class="source-line-no">042</span><span id="line-42"> }</span> |
| <span class="source-line-no">043</span><span id="line-43"></span> |
| <span class="source-line-no">044</span><span id="line-44"> public BoundSocketMaker(Supplier<Integer> randomPortMaker) {</span> |
| <span class="source-line-no">045</span><span id="line-45"> this(InetAddress.getLoopbackAddress().getHostName(), randomPortMaker);</span> |
| <span class="source-line-no">046</span><span id="line-46"> }</span> |
| <span class="source-line-no">047</span><span id="line-47"></span> |
| <span class="source-line-no">048</span><span id="line-48"> public BoundSocketMaker(final String hostname, Supplier<Integer> randomPortMaker) {</span> |
| <span class="source-line-no">049</span><span id="line-49"> this.socket = get(hostname, randomPortMaker);</span> |
| <span class="source-line-no">050</span><span id="line-50"> }</span> |
| <span class="source-line-no">051</span><span id="line-51"></span> |
| <span class="source-line-no">052</span><span id="line-52"> public int getPort() {</span> |
| <span class="source-line-no">053</span><span id="line-53"> return this.socket.getLocalPort();</span> |
| <span class="source-line-no">054</span><span id="line-54"> }</span> |
| <span class="source-line-no">055</span><span id="line-55"></span> |
| <span class="source-line-no">056</span><span id="line-56"> /** Returns Returns a bound socket; be sure to close when done. */</span> |
| <span class="source-line-no">057</span><span id="line-57"> private ServerSocket get(String hostname, Supplier<Integer> randomPortMaker) {</span> |
| <span class="source-line-no">058</span><span id="line-58"> ServerSocket ss = null;</span> |
| <span class="source-line-no">059</span><span id="line-59"> int port = -1;</span> |
| <span class="source-line-no">060</span><span id="line-60"> while (true) {</span> |
| <span class="source-line-no">061</span><span id="line-61"> port = randomPortMaker.get();</span> |
| <span class="source-line-no">062</span><span id="line-62"> try {</span> |
| <span class="source-line-no">063</span><span id="line-63"> ss = new ServerSocket();</span> |
| <span class="source-line-no">064</span><span id="line-64"> ss.bind(new InetSocketAddress(hostname, port));</span> |
| <span class="source-line-no">065</span><span id="line-65"> break;</span> |
| <span class="source-line-no">066</span><span id="line-66"> } catch (IOException ioe) {</span> |
| <span class="source-line-no">067</span><span id="line-67"> LOG.warn("Failed bind", ioe);</span> |
| <span class="source-line-no">068</span><span id="line-68"> try {</span> |
| <span class="source-line-no">069</span><span id="line-69"> ss.close();</span> |
| <span class="source-line-no">070</span><span id="line-70"> } catch (IOException ioe2) {</span> |
| <span class="source-line-no">071</span><span id="line-71"> LOG.warn("FAILED CLOSE of failed bind socket", ioe2);</span> |
| <span class="source-line-no">072</span><span id="line-72"> }</span> |
| <span class="source-line-no">073</span><span id="line-73"> }</span> |
| <span class="source-line-no">074</span><span id="line-74"> }</span> |
| <span class="source-line-no">075</span><span id="line-75"> return ss;</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 close() throws IOException {</span> |
| <span class="source-line-no">080</span><span id="line-80"> if (this.socket != null) {</span> |
| <span class="source-line-no">081</span><span id="line-81"> this.socket.close();</span> |
| <span class="source-line-no">082</span><span id="line-82"> }</span> |
| <span class="source-line-no">083</span><span id="line-83"> }</span> |
| <span class="source-line-no">084</span><span id="line-84">}</span> |
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| </pre> |
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