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apache / logging-log4j-site / d0d0de55986756593c08e5d2b8059541eacaf428 / . / log4j-2.0.2-git / log4j-web / xref / org / apache / logging / log4j / web / Log4jWebInitializerImpl.html
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<a class="jxr_linenumber" name="1" href="#1">1</a> <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="2" href="#2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em>
<a class="jxr_linenumber" name="3" href="#3">3</a> <em class="jxr_comment"> * contributor license agreements. See the NOTICE file distributed with</em>
<a class="jxr_linenumber" name="4" href="#4">4</a> <em class="jxr_comment"> * this work for additional information regarding copyright ownership.</em>
<a class="jxr_linenumber" name="5" href="#5">5</a> <em class="jxr_comment"> * The ASF licenses this file to You under the Apache license, Version 2.0</em>
<a class="jxr_linenumber" name="6" href="#6">6</a> <em class="jxr_comment"> * (the "License"); you may not use this file except in compliance with</em>
<a class="jxr_linenumber" name="7" href="#7">7</a> <em class="jxr_comment"> * the License. You may obtain a copy of the License at</em>
<a class="jxr_linenumber" name="8" href="#8">8</a> <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="9" href="#9">9</a> <em class="jxr_comment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="10" href="#10">10</a> <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="11" href="#11">11</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="12" href="#12">12</a> <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a class="jxr_linenumber" name="13" href="#13">13</a> <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a class="jxr_linenumber" name="14" href="#14">14</a> <em class="jxr_comment"> * See the license for the specific language governing permissions and</em>
<a class="jxr_linenumber" name="15" href="#15">15</a> <em class="jxr_comment"> * limitations under the license.</em>
<a class="jxr_linenumber" name="16" href="#16">16</a> <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="17" href="#17">17</a> <strong class="jxr_keyword">package</strong> org.apache.logging.log4j.web;
<a class="jxr_linenumber" name="18" href="#18">18</a>
<a class="jxr_linenumber" name="19" href="#19">19</a> <strong class="jxr_keyword">import</strong> java.net.URI;
<a class="jxr_linenumber" name="20" href="#20">20</a> <strong class="jxr_keyword">import</strong> java.net.URL;
<a class="jxr_linenumber" name="21" href="#21">21</a> <strong class="jxr_keyword">import</strong> java.util.Map;
<a class="jxr_linenumber" name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.ConcurrentHashMap;
<a class="jxr_linenumber" name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> javax.servlet.ServletContext;
<a class="jxr_linenumber" name="24" href="#24">24</a>
<a class="jxr_linenumber" name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.LogManager;
<a class="jxr_linenumber" name="26" href="#26">26</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.AbstractLifeCycle;
<a class="jxr_linenumber" name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.LoggerContext;
<a class="jxr_linenumber" name="28" href="#28">28</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.config.Configurator;
<a class="jxr_linenumber" name="29" href="#29">29</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.impl.ContextAnchor;
<a class="jxr_linenumber" name="30" href="#30">30</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.impl.Log4jContextFactory;
<a class="jxr_linenumber" name="31" href="#31">31</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.lookup.Interpolator;
<a class="jxr_linenumber" name="32" href="#32">32</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.lookup.StrSubstitutor;
<a class="jxr_linenumber" name="33" href="#33">33</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.selector.ContextSelector;
<a class="jxr_linenumber" name="34" href="#34">34</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.selector.NamedContextSelector;
<a class="jxr_linenumber" name="35" href="#35">35</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.util.FileUtils;
<a class="jxr_linenumber" name="36" href="#36">36</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.util.Loader;
<a class="jxr_linenumber" name="37" href="#37">37</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.util.NetUtils;
<a class="jxr_linenumber" name="38" href="#38">38</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.util.SetUtils;
<a class="jxr_linenumber" name="39" href="#39">39</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.spi.LoggerContextFactory;
<a class="jxr_linenumber" name="40" href="#40">40</a>
<a class="jxr_linenumber" name="41" href="#41">41</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="42" href="#42">42</a> <em class="jxr_javadoccomment"> * This class initializes and deinitializes Log4j no matter how the initialization occurs.</em>
<a class="jxr_linenumber" name="43" href="#43">43</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="44" href="#44">44</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/logging/log4j/web/Log4jWebInitializerImpl.html">Log4jWebInitializerImpl</a> <strong class="jxr_keyword">extends</strong> AbstractLifeCycle <strong class="jxr_keyword">implements</strong> <a href="../../../../../org/apache/logging/log4j/web/Log4jWebLifeCycle.html">Log4jWebLifeCycle</a> {
<a class="jxr_linenumber" name="45" href="#45">45</a>
<a class="jxr_linenumber" name="46" href="#46">46</a> <strong class="jxr_keyword">static</strong> {
<a class="jxr_linenumber" name="47" href="#47">47</a> <strong class="jxr_keyword">if</strong> (Loader.isClassAvailable(<span class="jxr_string">"org.apache.logging.log4j.core.web.JNDIContextFilter"</span>)) {
<a class="jxr_linenumber" name="48" href="#48">48</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"You are using Log4j 2 in a web application with the old, extinct "</span> +
<a class="jxr_linenumber" name="49" href="#49">49</a> <span class="jxr_string">"log4j-web artifact. This is not supported and could cause serious runtime problems. Please"</span> +
<a class="jxr_linenumber" name="50" href="#50">50</a> <span class="jxr_string">"remove the log4j-web JAR file from your application."</span>);
<a class="jxr_linenumber" name="51" href="#51">51</a> }
<a class="jxr_linenumber" name="52" href="#52">52</a> }
<a class="jxr_linenumber" name="53" href="#53">53</a>
<a class="jxr_linenumber" name="54" href="#54">54</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Map&lt;String, String&gt; map = <strong class="jxr_keyword">new</strong> ConcurrentHashMap&lt;String, String&gt;();
<a class="jxr_linenumber" name="55" href="#55">55</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> StrSubstitutor substitutor = <strong class="jxr_keyword">new</strong> StrSubstitutor(<strong class="jxr_keyword">new</strong> Interpolator(map));
<a class="jxr_linenumber" name="56" href="#56">56</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> ServletContext servletContext;
<a class="jxr_linenumber" name="57" href="#57">57</a>
<a class="jxr_linenumber" name="58" href="#58">58</a> <strong class="jxr_keyword">private</strong> String name;
<a class="jxr_linenumber" name="59" href="#59">59</a> <strong class="jxr_keyword">private</strong> NamedContextSelector namedContextSelector;
<a class="jxr_linenumber" name="60" href="#60">60</a> <strong class="jxr_keyword">private</strong> LoggerContext loggerContext;
<a class="jxr_linenumber" name="61" href="#61">61</a>
<a class="jxr_linenumber" name="62" href="#62">62</a> <strong class="jxr_keyword">private</strong> <a href="../../../../../org/apache/logging/log4j/web/Log4jWebInitializerImpl.html">Log4jWebInitializerImpl</a>(<strong class="jxr_keyword">final</strong> ServletContext servletContext) {
<a class="jxr_linenumber" name="63" href="#63">63</a> <strong class="jxr_keyword">this</strong>.servletContext = servletContext;
<a class="jxr_linenumber" name="64" href="#64">64</a> <strong class="jxr_keyword">this</strong>.map.put(<span class="jxr_string">"hostName"</span>, NetUtils.getLocalHostname());
<a class="jxr_linenumber" name="65" href="#65">65</a> }
<a class="jxr_linenumber" name="66" href="#66">66</a>
<a class="jxr_linenumber" name="67" href="#67">67</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="68" href="#68">68</a> <em class="jxr_javadoccomment"> * Initializes the Log4jWebLifeCycle attribute of a ServletContext. Those who wish to obtain this object should</em>
<a class="jxr_linenumber" name="69" href="#69">69</a> <em class="jxr_javadoccomment"> * use the {@link org.apache.logging.log4j.web.WebLoggerContextUtils#getWebLifeCycle(javax.servlet.ServletContext)}</em>
<a class="jxr_linenumber" name="70" href="#70">70</a> <em class="jxr_javadoccomment"> * method instead.</em>
<a class="jxr_linenumber" name="71" href="#71">71</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="72" href="#72">72</a> <em class="jxr_javadoccomment"> * @param servletContext the ServletContext to initialize</em>
<a class="jxr_linenumber" name="73" href="#73">73</a> <em class="jxr_javadoccomment"> * @return a new Log4jWebLifeCycle</em>
<a class="jxr_linenumber" name="74" href="#74">74</a> <em class="jxr_javadoccomment"> * @since 2.0.1</em>
<a class="jxr_linenumber" name="75" href="#75">75</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="76" href="#76">76</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">static</strong> <a href="../../../../../org/apache/logging/log4j/web/Log4jWebInitializerImpl.html">Log4jWebInitializerImpl</a> initialize(<strong class="jxr_keyword">final</strong> ServletContext servletContext) {
<a class="jxr_linenumber" name="77" href="#77">77</a> <strong class="jxr_keyword">final</strong> <a href="../../../../../org/apache/logging/log4j/web/Log4jWebInitializerImpl.html">Log4jWebInitializerImpl</a> initializer = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/logging/log4j/web/Log4jWebInitializerImpl.html">Log4jWebInitializerImpl</a>(servletContext);
<a class="jxr_linenumber" name="78" href="#78">78</a> servletContext.setAttribute(SUPPORT_ATTRIBUTE, initializer);
<a class="jxr_linenumber" name="79" href="#79">79</a> <strong class="jxr_keyword">return</strong> initializer;
<a class="jxr_linenumber" name="80" href="#80">80</a> }
<a class="jxr_linenumber" name="81" href="#81">81</a>
<a class="jxr_linenumber" name="82" href="#82">82</a> @Override
<a class="jxr_linenumber" name="83" href="#83">83</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">void</strong> start() {
<a class="jxr_linenumber" name="84" href="#84">84</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.isStopped() || <strong class="jxr_keyword">this</strong>.isStopping()) {
<a class="jxr_linenumber" name="85" href="#85">85</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"Cannot start this Log4jWebInitializerImpl after it was stopped."</span>);
<a class="jxr_linenumber" name="86" href="#86">86</a> }
<a class="jxr_linenumber" name="87" href="#87">87</a>
<a class="jxr_linenumber" name="88" href="#88">88</a> <em class="jxr_comment">// only do this once</em>
<a class="jxr_linenumber" name="89" href="#89">89</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.isInitialized()) {
<a class="jxr_linenumber" name="90" href="#90">90</a> <strong class="jxr_keyword">super</strong>.setStarting();
<a class="jxr_linenumber" name="91" href="#91">91</a>
<a class="jxr_linenumber" name="92" href="#92">92</a> <strong class="jxr_keyword">this</strong>.name = <strong class="jxr_keyword">this</strong>.substitutor.replace(<strong class="jxr_keyword">this</strong>.servletContext.getInitParameter(LOG4J_CONTEXT_NAME));
<a class="jxr_linenumber" name="93" href="#93">93</a> <strong class="jxr_keyword">final</strong> String location =
<a class="jxr_linenumber" name="94" href="#94">94</a> <strong class="jxr_keyword">this</strong>.substitutor.replace(<strong class="jxr_keyword">this</strong>.servletContext.getInitParameter(LOG4J_CONFIG_LOCATION));
<a class="jxr_linenumber" name="95" href="#95">95</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> isJndi =
<a class="jxr_linenumber" name="96" href="#96">96</a> <span class="jxr_string">"true"</span>.equalsIgnoreCase(<strong class="jxr_keyword">this</strong>.servletContext.getInitParameter(IS_LOG4J_CONTEXT_SELECTOR_NAMED));
<a class="jxr_linenumber" name="97" href="#97">97</a>
<a class="jxr_linenumber" name="98" href="#98">98</a> <strong class="jxr_keyword">if</strong> (isJndi) {
<a class="jxr_linenumber" name="99" href="#99">99</a> <strong class="jxr_keyword">this</strong>.initializeJndi(location);
<a class="jxr_linenumber" name="100" href="#100">100</a> } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="101" href="#101">101</a> <strong class="jxr_keyword">this</strong>.initializeNonJndi(location);
<a class="jxr_linenumber" name="102" href="#102">102</a> }
<a class="jxr_linenumber" name="103" href="#103">103</a>
<a class="jxr_linenumber" name="104" href="#104">104</a> <strong class="jxr_keyword">this</strong>.servletContext.setAttribute(CONTEXT_ATTRIBUTE, <strong class="jxr_keyword">this</strong>.loggerContext);
<a class="jxr_linenumber" name="105" href="#105">105</a> <strong class="jxr_keyword">super</strong>.setStarted();
<a class="jxr_linenumber" name="106" href="#106">106</a> }
<a class="jxr_linenumber" name="107" href="#107">107</a> }
<a class="jxr_linenumber" name="108" href="#108">108</a>
<a class="jxr_linenumber" name="109" href="#109">109</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> initializeJndi(<strong class="jxr_keyword">final</strong> String location) {
<a class="jxr_linenumber" name="110" href="#110">110</a> <strong class="jxr_keyword">final</strong> URI configLocation = getConfigURI(location);
<a class="jxr_linenumber" name="111" href="#111">111</a>
<a class="jxr_linenumber" name="112" href="#112">112</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.name == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="113" href="#113">113</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"A log4jContextName context parameter is required"</span>);
<a class="jxr_linenumber" name="114" href="#114">114</a> }
<a class="jxr_linenumber" name="115" href="#115">115</a>
<a class="jxr_linenumber" name="116" href="#116">116</a> LoggerContext context;
<a class="jxr_linenumber" name="117" href="#117">117</a> <strong class="jxr_keyword">final</strong> LoggerContextFactory factory = LogManager.getFactory();
<a class="jxr_linenumber" name="118" href="#118">118</a> <strong class="jxr_keyword">if</strong> (factory instanceof Log4jContextFactory) {
<a class="jxr_linenumber" name="119" href="#119">119</a> <strong class="jxr_keyword">final</strong> ContextSelector selector = ((Log4jContextFactory) factory).getSelector();
<a class="jxr_linenumber" name="120" href="#120">120</a> <strong class="jxr_keyword">if</strong> (selector instanceof NamedContextSelector) {
<a class="jxr_linenumber" name="121" href="#121">121</a> <strong class="jxr_keyword">this</strong>.namedContextSelector = (NamedContextSelector) selector;
<a class="jxr_linenumber" name="122" href="#122">122</a> context = <strong class="jxr_keyword">this</strong>.namedContextSelector.locateContext(<strong class="jxr_keyword">this</strong>.name, <strong class="jxr_keyword">this</strong>.servletContext, configLocation);
<a class="jxr_linenumber" name="123" href="#123">123</a> ContextAnchor.THREAD_CONTEXT.set(context);
<a class="jxr_linenumber" name="124" href="#124">124</a> <strong class="jxr_keyword">if</strong> (context.isInitialized()) {
<a class="jxr_linenumber" name="125" href="#125">125</a> context.start();
<a class="jxr_linenumber" name="126" href="#126">126</a> }
<a class="jxr_linenumber" name="127" href="#127">127</a> ContextAnchor.THREAD_CONTEXT.remove();
<a class="jxr_linenumber" name="128" href="#128">128</a> } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="129" href="#129">129</a> <em class="jxr_comment">// won't it be amusing if the servlet container uses Log4j as its ServletContext logger?</em>
<a class="jxr_linenumber" name="130" href="#130">130</a> <strong class="jxr_keyword">this</strong>.servletContext.log(<span class="jxr_string">"Potential problem: Selector is not an instance of NamedContextSelector."</span>);
<a class="jxr_linenumber" name="131" href="#131">131</a> <strong class="jxr_keyword">return</strong>;
<a class="jxr_linenumber" name="132" href="#132">132</a> }
<a class="jxr_linenumber" name="133" href="#133">133</a> } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="134" href="#134">134</a> <strong class="jxr_keyword">this</strong>.servletContext.log(<span class="jxr_string">"Potential problem: Factory is not an instance of Log4jContextFactory."</span>);
<a class="jxr_linenumber" name="135" href="#135">135</a> <strong class="jxr_keyword">return</strong>;
<a class="jxr_linenumber" name="136" href="#136">136</a> }
<a class="jxr_linenumber" name="137" href="#137">137</a> <strong class="jxr_keyword">this</strong>.loggerContext = context;
<a class="jxr_linenumber" name="138" href="#138">138</a> <strong class="jxr_keyword">this</strong>.servletContext.log(<span class="jxr_string">"Created logger context for ["</span> + <strong class="jxr_keyword">this</strong>.name + <span class="jxr_string">"] using ["</span> +
<a class="jxr_linenumber" name="139" href="#139">139</a> context.getClass().getClassLoader() + <span class="jxr_string">"]."</span>);
<a class="jxr_linenumber" name="140" href="#140">140</a> }
<a class="jxr_linenumber" name="141" href="#141">141</a>
<a class="jxr_linenumber" name="142" href="#142">142</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">void</strong> initializeNonJndi(<strong class="jxr_keyword">final</strong> String location) {
<a class="jxr_linenumber" name="143" href="#143">143</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.name == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="144" href="#144">144</a> <strong class="jxr_keyword">this</strong>.name = <strong class="jxr_keyword">this</strong>.servletContext.getServletContextName();
<a class="jxr_linenumber" name="145" href="#145">145</a> }
<a class="jxr_linenumber" name="146" href="#146">146</a>
<a class="jxr_linenumber" name="147" href="#147">147</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.name == <strong class="jxr_keyword">null</strong> &amp;&amp; location == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="148" href="#148">148</a> <strong class="jxr_keyword">this</strong>.servletContext.log(<span class="jxr_string">"No Log4j context configuration provided. This is very unusual."</span>);
<a class="jxr_linenumber" name="149" href="#149">149</a> <strong class="jxr_keyword">return</strong>;
<a class="jxr_linenumber" name="150" href="#150">150</a> }
<a class="jxr_linenumber" name="151" href="#151">151</a>
<a class="jxr_linenumber" name="152" href="#152">152</a> <strong class="jxr_keyword">final</strong> URI uri = getConfigURI(location);
<a class="jxr_linenumber" name="153" href="#153">153</a> <strong class="jxr_keyword">this</strong>.loggerContext = Configurator.initialize(<strong class="jxr_keyword">this</strong>.name, <strong class="jxr_keyword">this</strong>.getClassLoader(), uri, <strong class="jxr_keyword">this</strong>.servletContext);
<a class="jxr_linenumber" name="154" href="#154">154</a> }
<a class="jxr_linenumber" name="155" href="#155">155</a>
<a class="jxr_linenumber" name="156" href="#156">156</a> <strong class="jxr_keyword">private</strong> URI getConfigURI(<strong class="jxr_keyword">final</strong> String location) {
<a class="jxr_linenumber" name="157" href="#157">157</a> <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="158" href="#158">158</a> String configLocation = location;
<a class="jxr_linenumber" name="159" href="#159">159</a> <strong class="jxr_keyword">if</strong> (configLocation == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="160" href="#160">160</a> <strong class="jxr_keyword">final</strong> String[] paths = SetUtils.prefixSet(servletContext.getResourcePaths(<span class="jxr_string">"/WEB-INF/"</span>), <span class="jxr_string">"/WEB-INF/log4j2"</span>);
<a class="jxr_linenumber" name="161" href="#161">161</a> <strong class="jxr_keyword">if</strong> (paths.length == 1) {
<a class="jxr_linenumber" name="162" href="#162">162</a> configLocation = paths[0];
<a class="jxr_linenumber" name="163" href="#163">163</a> } <strong class="jxr_keyword">else</strong> <strong class="jxr_keyword">if</strong> (paths.length &gt; 1) {
<a class="jxr_linenumber" name="164" href="#164">164</a> <strong class="jxr_keyword">final</strong> String prefix = <span class="jxr_string">"/WEB-INF/log4j2-"</span> + <strong class="jxr_keyword">this</strong>.name + <span class="jxr_string">"."</span>;
<a class="jxr_linenumber" name="165" href="#165">165</a> <strong class="jxr_keyword">boolean</strong> found = false;
<a class="jxr_linenumber" name="166" href="#166">166</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">final</strong> String str : paths) {
<a class="jxr_linenumber" name="167" href="#167">167</a> <strong class="jxr_keyword">if</strong> (str.startsWith(prefix)) {
<a class="jxr_linenumber" name="168" href="#168">168</a> configLocation = str;
<a class="jxr_linenumber" name="169" href="#169">169</a> found = <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="170" href="#170">170</a> <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="171" href="#171">171</a> }
<a class="jxr_linenumber" name="172" href="#172">172</a> }
<a class="jxr_linenumber" name="173" href="#173">173</a> <strong class="jxr_keyword">if</strong> (!found) {
<a class="jxr_linenumber" name="174" href="#174">174</a> configLocation = paths[0];
<a class="jxr_linenumber" name="175" href="#175">175</a> }
<a class="jxr_linenumber" name="176" href="#176">176</a> }
<a class="jxr_linenumber" name="177" href="#177">177</a> }
<a class="jxr_linenumber" name="178" href="#178">178</a> <strong class="jxr_keyword">if</strong> (configLocation != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="179" href="#179">179</a> <strong class="jxr_keyword">final</strong> URL url = servletContext.getResource(configLocation);
<a class="jxr_linenumber" name="180" href="#180">180</a> <strong class="jxr_keyword">if</strong> (url != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="181" href="#181">181</a> <strong class="jxr_keyword">return</strong> url.toURI();
<a class="jxr_linenumber" name="182" href="#182">182</a> }
<a class="jxr_linenumber" name="183" href="#183">183</a> }
<a class="jxr_linenumber" name="184" href="#184">184</a> } <strong class="jxr_keyword">catch</strong> (<strong class="jxr_keyword">final</strong> Exception ex) {
<a class="jxr_linenumber" name="185" href="#185">185</a> <em class="jxr_comment">// Just try passing the location.</em>
<a class="jxr_linenumber" name="186" href="#186">186</a> }
<a class="jxr_linenumber" name="187" href="#187">187</a> <strong class="jxr_keyword">if</strong> (location != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="188" href="#188">188</a> <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="189" href="#189">189</a> <strong class="jxr_keyword">return</strong> FileUtils.getCorrectedFilePathUri(location);
<a class="jxr_linenumber" name="190" href="#190">190</a> } <strong class="jxr_keyword">catch</strong> (<strong class="jxr_keyword">final</strong> Exception e) {
<a class="jxr_linenumber" name="191" href="#191">191</a> <strong class="jxr_keyword">this</strong>.servletContext.log(<span class="jxr_string">"Unable to convert configuration location ["</span> + location + <span class="jxr_string">"] to a URI!"</span>, e);
<a class="jxr_linenumber" name="192" href="#192">192</a> }
<a class="jxr_linenumber" name="193" href="#193">193</a> }
<a class="jxr_linenumber" name="194" href="#194">194</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="195" href="#195">195</a> }
<a class="jxr_linenumber" name="196" href="#196">196</a>
<a class="jxr_linenumber" name="197" href="#197">197</a> @Override
<a class="jxr_linenumber" name="198" href="#198">198</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">void</strong> stop() {
<a class="jxr_linenumber" name="199" href="#199">199</a> <strong class="jxr_keyword">if</strong> (!<strong class="jxr_keyword">this</strong>.isStarted() &amp;&amp; !<strong class="jxr_keyword">this</strong>.isStopped()) {
<a class="jxr_linenumber" name="200" href="#200">200</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalStateException(<span class="jxr_string">"Cannot stop this Log4jWebInitializer because it has not started."</span>);
<a class="jxr_linenumber" name="201" href="#201">201</a> }
<a class="jxr_linenumber" name="202" href="#202">202</a>
<a class="jxr_linenumber" name="203" href="#203">203</a> <em class="jxr_comment">// only do this once</em>
<a class="jxr_linenumber" name="204" href="#204">204</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.isStarted()) {
<a class="jxr_linenumber" name="205" href="#205">205</a> <strong class="jxr_keyword">this</strong>.setStopping();
<a class="jxr_linenumber" name="206" href="#206">206</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.loggerContext != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="207" href="#207">207</a> <strong class="jxr_keyword">this</strong>.servletContext.log(<span class="jxr_string">"Removing LoggerContext for ["</span> + <strong class="jxr_keyword">this</strong>.name + <span class="jxr_string">"]."</span>);
<a class="jxr_linenumber" name="208" href="#208">208</a> <strong class="jxr_keyword">this</strong>.servletContext.removeAttribute(CONTEXT_ATTRIBUTE);
<a class="jxr_linenumber" name="209" href="#209">209</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.namedContextSelector != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="210" href="#210">210</a> <strong class="jxr_keyword">this</strong>.namedContextSelector.removeContext(<strong class="jxr_keyword">this</strong>.name);
<a class="jxr_linenumber" name="211" href="#211">211</a> }
<a class="jxr_linenumber" name="212" href="#212">212</a> <strong class="jxr_keyword">this</strong>.loggerContext.stop();
<a class="jxr_linenumber" name="213" href="#213">213</a> <strong class="jxr_keyword">this</strong>.loggerContext.setExternalContext(<strong class="jxr_keyword">null</strong>);
<a class="jxr_linenumber" name="214" href="#214">214</a> <strong class="jxr_keyword">this</strong>.loggerContext = <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="215" href="#215">215</a> }
<a class="jxr_linenumber" name="216" href="#216">216</a> <strong class="jxr_keyword">this</strong>.setStopped();
<a class="jxr_linenumber" name="217" href="#217">217</a> }
<a class="jxr_linenumber" name="218" href="#218">218</a> }
<a class="jxr_linenumber" name="219" href="#219">219</a>
<a class="jxr_linenumber" name="220" href="#220">220</a> @Override
<a class="jxr_linenumber" name="221" href="#221">221</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setLoggerContext() {
<a class="jxr_linenumber" name="222" href="#222">222</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.loggerContext != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="223" href="#223">223</a> ContextAnchor.THREAD_CONTEXT.set(<strong class="jxr_keyword">this</strong>.loggerContext);
<a class="jxr_linenumber" name="224" href="#224">224</a> }
<a class="jxr_linenumber" name="225" href="#225">225</a> }
<a class="jxr_linenumber" name="226" href="#226">226</a>
<a class="jxr_linenumber" name="227" href="#227">227</a> @Override
<a class="jxr_linenumber" name="228" href="#228">228</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> clearLoggerContext() {
<a class="jxr_linenumber" name="229" href="#229">229</a> ContextAnchor.THREAD_CONTEXT.remove();
<a class="jxr_linenumber" name="230" href="#230">230</a> }
<a class="jxr_linenumber" name="231" href="#231">231</a>
<a class="jxr_linenumber" name="232" href="#232">232</a> @Override
<a class="jxr_linenumber" name="233" href="#233">233</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> wrapExecution(<strong class="jxr_keyword">final</strong> Runnable runnable) {
<a class="jxr_linenumber" name="234" href="#234">234</a> <strong class="jxr_keyword">this</strong>.setLoggerContext();
<a class="jxr_linenumber" name="235" href="#235">235</a>
<a class="jxr_linenumber" name="236" href="#236">236</a> <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="237" href="#237">237</a> runnable.run();
<a class="jxr_linenumber" name="238" href="#238">238</a> } <strong class="jxr_keyword">finally</strong> {
<a class="jxr_linenumber" name="239" href="#239">239</a> <strong class="jxr_keyword">this</strong>.clearLoggerContext();
<a class="jxr_linenumber" name="240" href="#240">240</a> }
<a class="jxr_linenumber" name="241" href="#241">241</a> }
<a class="jxr_linenumber" name="242" href="#242">242</a>
<a class="jxr_linenumber" name="243" href="#243">243</a> <strong class="jxr_keyword">private</strong> ClassLoader getClassLoader() {
<a class="jxr_linenumber" name="244" href="#244">244</a> <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="245" href="#245">245</a> <em class="jxr_comment">// if container is Servlet 3.0, use its getClassLoader method</em>
<a class="jxr_linenumber" name="246" href="#246">246</a> <em class="jxr_comment">// this may look odd, but the call below will throw NoSuchMethodError if user is on Servlet 2.5</em>
<a class="jxr_linenumber" name="247" href="#247">247</a> <em class="jxr_comment">// we compile against 3.0 to support Log4jServletContainerInitializer, but we don't require 3.0</em>
<a class="jxr_linenumber" name="248" href="#248">248</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.servletContext.getClassLoader();
<a class="jxr_linenumber" name="249" href="#249">249</a> } <strong class="jxr_keyword">catch</strong> (<strong class="jxr_keyword">final</strong> Throwable ignore) {
<a class="jxr_linenumber" name="250" href="#250">250</a> <em class="jxr_comment">// otherwise, use this class's class loader</em>
<a class="jxr_linenumber" name="251" href="#251">251</a> <strong class="jxr_keyword">return</strong> Log4jWebInitializerImpl.<strong class="jxr_keyword">class</strong>.getClassLoader();
<a class="jxr_linenumber" name="252" href="#252">252</a> }
<a class="jxr_linenumber" name="253" href="#253">253</a> }
<a class="jxr_linenumber" name="254" href="#254">254</a>
<a class="jxr_linenumber" name="255" href="#255">255</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="256" href="#256">256</a> <em class="jxr_javadoccomment"> * Get the current initializer from the {@link ServletContext}. If the initializer does not exist, create a new one</em>
<a class="jxr_linenumber" name="257" href="#257">257</a> <em class="jxr_javadoccomment"> * and add it to the {@link ServletContext}, then return that.</em>
<a class="jxr_linenumber" name="258" href="#258">258</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="259" href="#259">259</a> <em class="jxr_javadoccomment"> * @param servletContext The {@link ServletContext} for this web application</em>
<a class="jxr_linenumber" name="260" href="#260">260</a> <em class="jxr_javadoccomment"> * @return the initializer, never {@code null}.</em>
<a class="jxr_linenumber" name="261" href="#261">261</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="262" href="#262">262</a> <strong class="jxr_keyword">static</strong> <a href="../../../../../org/apache/logging/log4j/web/Log4jWebLifeCycle.html">Log4jWebLifeCycle</a> getLog4jWebInitializer(<strong class="jxr_keyword">final</strong> ServletContext servletContext) {
<a class="jxr_linenumber" name="263" href="#263">263</a> <strong class="jxr_keyword">return</strong> WebLoggerContextUtils.getWebLifeCycle(servletContext);
<a class="jxr_linenumber" name="264" href="#264">264</a> }
<a class="jxr_linenumber" name="265" href="#265">265</a> }
</pre>
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