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| <div id="overview"><a href="../../../../../apidocs/org/trafodion/dcs/util/InfoServer.html">View Javadoc</a></div><pre> |
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|
| <a class="jxr_linenumber" name="1" href="#1">1</a> <em class="jxr_javadoccomment">/**</em>
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| <a class="jxr_linenumber" name="2" href="#2">2</a> <em class="jxr_javadoccomment">/**</em>
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| <a class="jxr_linenumber" name="3" href="#3">3</a> <em class="jxr_javadoccomment"> * Copyright 2007 The Apache Software Foundation</em>
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| <a class="jxr_linenumber" name="4" href="#4">4</a> <em class="jxr_javadoccomment"> *</em>
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| <a class="jxr_linenumber" name="5" href="#5">5</a> <em class="jxr_javadoccomment"> * Licensed to the Apache Software Foundation (ASF) under one</em>
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| <a class="jxr_linenumber" name="6" href="#6">6</a> <em class="jxr_javadoccomment"> * or more contributor license agreements. See the NOTICE file</em>
|
| <a class="jxr_linenumber" name="7" href="#7">7</a> <em class="jxr_javadoccomment"> * distributed with this work for additional information</em>
|
| <a class="jxr_linenumber" name="8" href="#8">8</a> <em class="jxr_javadoccomment"> * regarding copyright ownership. The ASF licenses this file</em>
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| <a class="jxr_linenumber" name="9" href="#9">9</a> <em class="jxr_javadoccomment"> * to you under the Apache License, Version 2.0 (the</em>
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| <a class="jxr_linenumber" name="10" href="#10">10</a> <em class="jxr_javadoccomment"> * "License"); you may not use this file except in compliance</em>
|
| <a class="jxr_linenumber" name="11" href="#11">11</a> <em class="jxr_javadoccomment"> * with the License. You may obtain a copy of the License at</em>
|
| <a class="jxr_linenumber" name="12" href="#12">12</a> <em class="jxr_javadoccomment"> *</em>
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| <a class="jxr_linenumber" name="13" href="#13">13</a> <em class="jxr_javadoccomment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
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| <a class="jxr_linenumber" name="14" href="#14">14</a> <em class="jxr_javadoccomment"> *</em>
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| <a class="jxr_linenumber" name="15" href="#15">15</a> <em class="jxr_javadoccomment"> * Unless required by applicable law or agreed to in writing, software</em>
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| <a class="jxr_linenumber" name="16" href="#16">16</a> <em class="jxr_javadoccomment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
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| <a class="jxr_linenumber" name="17" href="#17">17</a> <em class="jxr_javadoccomment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
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| <a class="jxr_linenumber" name="18" href="#18">18</a> <em class="jxr_javadoccomment"> * See the License for the specific language governing permissions and</em>
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| <a class="jxr_linenumber" name="19" href="#19">19</a> <em class="jxr_javadoccomment"> * limitations under the License.</em>
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| <a class="jxr_linenumber" name="20" href="#20">20</a> <em class="jxr_javadoccomment"> */</em>
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| <a class="jxr_linenumber" name="21" href="#21">21</a> <strong class="jxr_keyword">package</strong> org.trafodion.dcs.util;
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| <a class="jxr_linenumber" name="22" href="#22">22</a>
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| <a class="jxr_linenumber" name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> java.io.FileNotFoundException;
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| <a class="jxr_linenumber" name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> java.io.IOException;
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| <a class="jxr_linenumber" name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> java.lang.reflect.Method;
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| <a class="jxr_linenumber" name="26" href="#26">26</a> <strong class="jxr_keyword">import</strong> java.net.URL;
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| <a class="jxr_linenumber" name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> java.util.Map;
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| <a class="jxr_linenumber" name="28" href="#28">28</a>
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| <a class="jxr_linenumber" name="29" href="#29">29</a> <strong class="jxr_keyword">import</strong> org.apache.hadoop.conf.Configuration;
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| <a class="jxr_linenumber" name="30" href="#30">30</a> <strong class="jxr_keyword">import</strong> org.trafodion.dcs.util.DcsConfiguration;
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| <a class="jxr_linenumber" name="31" href="#31">31</a> <strong class="jxr_keyword">import</strong> org.trafodion.dcs.http.HttpServer;
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| <a class="jxr_linenumber" name="32" href="#32">32</a> <strong class="jxr_keyword">import</strong> org.mortbay.jetty.handler.ContextHandlerCollection;
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| <a class="jxr_linenumber" name="33" href="#33">33</a> <strong class="jxr_keyword">import</strong> org.mortbay.jetty.servlet.Context;
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| <a class="jxr_linenumber" name="34" href="#34">34</a> <strong class="jxr_keyword">import</strong> org.mortbay.jetty.servlet.DefaultServlet;
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| <a class="jxr_linenumber" name="35" href="#35">35</a>
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| <a class="jxr_linenumber" name="36" href="#36">36</a> <em class="jxr_javadoccomment">/**</em>
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| <a class="jxr_linenumber" name="37" href="#37">37</a> <em class="jxr_javadoccomment"> * Create a Jetty embedded server to answer http requests. The primary goal</em>
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| <a class="jxr_linenumber" name="38" href="#38">38</a> <em class="jxr_javadoccomment"> * is to serve up status information for the server.</em>
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| <a class="jxr_linenumber" name="39" href="#39">39</a> <em class="jxr_javadoccomment"> * There are three contexts:</em>
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| <a class="jxr_linenumber" name="40" href="#40">40</a> <em class="jxr_javadoccomment"> * "/stacks/" -> points to stack trace</em>
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| <a class="jxr_linenumber" name="41" href="#41">41</a> <em class="jxr_javadoccomment"> * "/static/" -> points to common static files (src/dcs-webapps/static)</em>
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| <a class="jxr_linenumber" name="42" href="#42">42</a> <em class="jxr_javadoccomment"> * "/" -> the jsp server code from (src/dcs-webapps/<name>)</em>
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| <a class="jxr_linenumber" name="43" href="#43">43</a> <em class="jxr_javadoccomment"> */</em>
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| <a class="jxr_linenumber" name="44" href="#44">44</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../org/trafodion/dcs/util/InfoServer.html">InfoServer</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../org/trafodion/dcs/http/HttpServer.html">HttpServer</a> {
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| <a class="jxr_linenumber" name="45" href="#45">45</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Configuration config;
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| <a class="jxr_linenumber" name="46" href="#46">46</a>
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| <a class="jxr_linenumber" name="47" href="#47">47</a> <em class="jxr_javadoccomment">/**</em>
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| <a class="jxr_linenumber" name="48" href="#48">48</a> <em class="jxr_javadoccomment"> * Create a status server on the given port.</em>
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| <a class="jxr_linenumber" name="49" href="#49">49</a> <em class="jxr_javadoccomment"> * The jsp scripts are taken from src/dcs-webapps/<code>name<code>.</em>
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| <a class="jxr_linenumber" name="50" href="#50">50</a> <em class="jxr_javadoccomment"> * @param name The name of the server</em>
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| <a class="jxr_linenumber" name="51" href="#51">51</a> <em class="jxr_javadoccomment"> * @param bindAddress address to bind to</em>
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| <a class="jxr_linenumber" name="52" href="#52">52</a> <em class="jxr_javadoccomment"> * @param port The port to use on the server</em>
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| <a class="jxr_linenumber" name="53" href="#53">53</a> <em class="jxr_javadoccomment"> * @param findPort whether the server should start at the given port and</em>
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| <a class="jxr_linenumber" name="54" href="#54">54</a> <em class="jxr_javadoccomment"> * increment by 1 until it finds a free port.</em>
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| <a class="jxr_linenumber" name="55" href="#55">55</a> <em class="jxr_javadoccomment"> * @throws IOException e</em>
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| <a class="jxr_linenumber" name="56" href="#56">56</a> <em class="jxr_javadoccomment"> */</em>
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| <a class="jxr_linenumber" name="57" href="#57">57</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/trafodion/dcs/util/InfoServer.html">InfoServer</a>(String name, String bindAddress, <strong class="jxr_keyword">int</strong> port, <strong class="jxr_keyword">boolean</strong> findPort,
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| <a class="jxr_linenumber" name="58" href="#58">58</a> <strong class="jxr_keyword">final</strong> Configuration c)
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| <a class="jxr_linenumber" name="59" href="#59">59</a> <strong class="jxr_keyword">throws</strong> IOException {
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| <a class="jxr_linenumber" name="60" href="#60">60</a> <strong class="jxr_keyword">super</strong>(name, bindAddress, port, findPort, c);
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| <a class="jxr_linenumber" name="61" href="#61">61</a> <strong class="jxr_keyword">this</strong>.config = c;
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| <a class="jxr_linenumber" name="62" href="#62">62</a> fixupLogsServletLocation();
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| <a class="jxr_linenumber" name="63" href="#63">63</a> }
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| <a class="jxr_linenumber" name="64" href="#64">64</a>
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| <a class="jxr_linenumber" name="65" href="#65">65</a> <em class="jxr_javadoccomment">/**</em>
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| <a class="jxr_linenumber" name="66" href="#66">66</a> <em class="jxr_javadoccomment"> * Fixup where the logs app points, make it point at dcs logs rather than</em>
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| <a class="jxr_linenumber" name="67" href="#67">67</a> <em class="jxr_javadoccomment"> * hadoop logs.</em>
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| <a class="jxr_linenumber" name="68" href="#68">68</a> <em class="jxr_javadoccomment"> */</em>
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| <a class="jxr_linenumber" name="69" href="#69">69</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> fixupLogsServletLocation() {
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| <a class="jxr_linenumber" name="70" href="#70">70</a> <strong class="jxr_keyword">final</strong> String logsContextPath = <span class="jxr_string">"/logs"</span>;
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| <a class="jxr_linenumber" name="71" href="#71">71</a> <em class="jxr_comment">// Now, put my logs in place of hadoops... disable old one first.</em>
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| <a class="jxr_linenumber" name="72" href="#72">72</a> Context oldLogsContext = <strong class="jxr_keyword">null</strong>;
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| <a class="jxr_linenumber" name="73" href="#73">73</a> <strong class="jxr_keyword">for</strong> (Map.Entry<Context, Boolean> e : defaultContexts.entrySet()) {
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| <a class="jxr_linenumber" name="74" href="#74">74</a> <strong class="jxr_keyword">if</strong> (e.getKey().getContextPath().equals(logsContextPath)) {
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| <a class="jxr_linenumber" name="75" href="#75">75</a> oldLogsContext = e.getKey();
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| <a class="jxr_linenumber" name="76" href="#76">76</a> <strong class="jxr_keyword">break</strong>;
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| <a class="jxr_linenumber" name="77" href="#77">77</a> }
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| <a class="jxr_linenumber" name="78" href="#78">78</a> }
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| <a class="jxr_linenumber" name="79" href="#79">79</a> <strong class="jxr_keyword">if</strong> (oldLogsContext != <strong class="jxr_keyword">null</strong>) {
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| <a class="jxr_linenumber" name="80" href="#80">80</a> <strong class="jxr_keyword">this</strong>.defaultContexts.put(oldLogsContext, Boolean.FALSE);
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| <a class="jxr_linenumber" name="81" href="#81">81</a> }
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| <a class="jxr_linenumber" name="82" href="#82">82</a> <em class="jxr_comment">// Now do my logs.</em>
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| <a class="jxr_linenumber" name="83" href="#83">83</a> <em class="jxr_comment">// Set up the context for "/logs/" if "dcs.log.dir" property is defined.</em>
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| <a class="jxr_linenumber" name="84" href="#84">84</a> String logDir = System.getProperty(<span class="jxr_string">"dcs.log.dir"</span>);
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| <a class="jxr_linenumber" name="85" href="#85">85</a> <strong class="jxr_keyword">if</strong> (logDir != <strong class="jxr_keyword">null</strong>) {
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| <a class="jxr_linenumber" name="86" href="#86">86</a> <em class="jxr_comment">// This is a little presumptious but seems to work.</em>
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| <a class="jxr_linenumber" name="87" href="#87">87</a> Context logContext =
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| <a class="jxr_linenumber" name="88" href="#88">88</a> <strong class="jxr_keyword">new</strong> Context((ContextHandlerCollection)<strong class="jxr_keyword">this</strong>.webServer.getHandler(),
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| <a class="jxr_linenumber" name="89" href="#89">89</a> logsContextPath);
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| <a class="jxr_linenumber" name="90" href="#90">90</a> logContext.setResourceBase(logDir);
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| <a class="jxr_linenumber" name="91" href="#91">91</a> logContext.addServlet(DefaultServlet.<strong class="jxr_keyword">class</strong>, <span class="jxr_string">"/"</span>);
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| <a class="jxr_linenumber" name="92" href="#92">92</a> defaultContexts.put(logContext, <strong class="jxr_keyword">true</strong>);
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| <a class="jxr_linenumber" name="93" href="#93">93</a> }
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| <a class="jxr_linenumber" name="94" href="#94">94</a> }
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| <a class="jxr_linenumber" name="95" href="#95">95</a>
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| <a class="jxr_linenumber" name="96" href="#96">96</a> <em class="jxr_javadoccomment">/**</em>
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| <a class="jxr_linenumber" name="97" href="#97">97</a> <em class="jxr_javadoccomment"> * Get the pathname to the webapps files.</em>
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| <a class="jxr_linenumber" name="98" href="#98">98</a> <em class="jxr_javadoccomment"> * @param appName eg "master" or "server"</em>
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| <a class="jxr_linenumber" name="99" href="#99">99</a> <em class="jxr_javadoccomment"> * @return the pathname as a URL</em>
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| <a class="jxr_linenumber" name="100" href="#100">100</a> <em class="jxr_javadoccomment"> * @throws FileNotFoundException if 'webapps' directory cannot be found on CLASSPATH.</em>
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| <a class="jxr_linenumber" name="101" href="#101">101</a> <em class="jxr_javadoccomment"> */</em>
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| <a class="jxr_linenumber" name="102" href="#102">102</a> <strong class="jxr_keyword">protected</strong> String getWebAppsPath(String appName) <strong class="jxr_keyword">throws</strong> FileNotFoundException {
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| <a class="jxr_linenumber" name="103" href="#103">103</a> <em class="jxr_comment">// Copied from the super-class.</em>
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| <a class="jxr_linenumber" name="104" href="#104">104</a> String resourceName = <span class="jxr_string">"dcs-webapps/"</span> + appName;
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| <a class="jxr_linenumber" name="105" href="#105">105</a> URL url = <strong class="jxr_keyword">this</strong>.getClass().getClassLoader().getResource(resourceName);
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| <a class="jxr_linenumber" name="106" href="#106">106</a> <strong class="jxr_keyword">if</strong> (url == <strong class="jxr_keyword">null</strong>)
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| <a class="jxr_linenumber" name="107" href="#107">107</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> FileNotFoundException(resourceName + <span class="jxr_string">" not found in CLASSPATH"</span>);
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| <a class="jxr_linenumber" name="108" href="#108">108</a> String urlString = url.toString();
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| <a class="jxr_linenumber" name="109" href="#109">109</a> <strong class="jxr_keyword">return</strong> urlString.substring(0, urlString.lastIndexOf('/'));
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| <a class="jxr_linenumber" name="110" href="#110">110</a> }
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| <a class="jxr_linenumber" name="111" href="#111">111</a>
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| <a class="jxr_linenumber" name="112" href="#112">112</a> <em class="jxr_javadoccomment">/**</em>
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| <a class="jxr_linenumber" name="113" href="#113">113</a> <em class="jxr_javadoccomment"> * Get the pathname to the <code>path</code> files.</em>
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| <a class="jxr_linenumber" name="114" href="#114">114</a> <em class="jxr_javadoccomment"> * @return the pathname as a URL</em>
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| <a class="jxr_linenumber" name="115" href="#115">115</a> <em class="jxr_javadoccomment"> */</em>
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| <a class="jxr_linenumber" name="116" href="#116">116</a> <strong class="jxr_keyword">protected</strong> String getWebAppsPath() <strong class="jxr_keyword">throws</strong> IOException {
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| <a class="jxr_linenumber" name="117" href="#117">117</a> <em class="jxr_comment">// Hack: webapps is not a unique enough element to find in CLASSPATH</em>
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| <a class="jxr_linenumber" name="118" href="#118">118</a> <em class="jxr_comment">// We'll more than likely find the hadoop webapps dir. So, instead</em>
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| <a class="jxr_linenumber" name="119" href="#119">119</a> <em class="jxr_comment">// look for the 'master' webapp in the webapps subdir. That should</em>
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| <a class="jxr_linenumber" name="120" href="#120">120</a> <em class="jxr_comment">// get us the dcs context. Presumption is that place where the</em>
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| <a class="jxr_linenumber" name="121" href="#121">121</a> <em class="jxr_comment">// master webapp resides is where we want this InfoServer picking up</em>
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| <a class="jxr_linenumber" name="122" href="#122">122</a> <em class="jxr_comment">// web applications.</em>
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| <a class="jxr_linenumber" name="123" href="#123">123</a> <strong class="jxr_keyword">final</strong> String master = <span class="jxr_string">"master"</span>;
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| <a class="jxr_linenumber" name="124" href="#124">124</a> String p = getWebAppsPath(master);
|
| <a class="jxr_linenumber" name="125" href="#125">125</a> <em class="jxr_comment">// Now strip master off the end if it is present</em>
|
| <a class="jxr_linenumber" name="126" href="#126">126</a> <strong class="jxr_keyword">if</strong>(p.endsWith(master)) {
|
| <a class="jxr_linenumber" name="127" href="#127">127</a> <strong class="jxr_keyword">return</strong> p.substring(0, p.lastIndexOf(master));
|
| <a class="jxr_linenumber" name="128" href="#128">128</a> }
|
| <a class="jxr_linenumber" name="129" href="#129">129</a> <strong class="jxr_keyword">return</strong> p;
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| <a class="jxr_linenumber" name="130" href="#130">130</a> }
|
| <a class="jxr_linenumber" name="131" href="#131">131</a> }
|
| </pre> |
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