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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.core.appender; |
| <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> org.apache.logging.log4j.core.Filter; |
| <a class="jxr_linenumber" name="20" href="#20">20</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.Layout; |
| <a class="jxr_linenumber" name="21" href="#21">21</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.LogEvent; |
| <a class="jxr_linenumber" name="22" href="#22">22</a> |
| <a class="jxr_linenumber" name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.locks.Lock; |
| <a class="jxr_linenumber" name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.locks.ReadWriteLock; |
| <a class="jxr_linenumber" name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.locks.ReentrantReadWriteLock; |
| <a class="jxr_linenumber" name="26" href="#26">26</a> |
| <a class="jxr_linenumber" name="27" href="#27">27</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="28" href="#28">28</a> <em class="jxr_javadoccomment"> * Writes the byte output stream. The stream will already have been encoded.</em> |
| <a class="jxr_linenumber" name="29" href="#29">29</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="30" href="#30">30</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/logging/log4j/core/appender/OutputStreamAppender.html">OutputStreamAppender</a> <strong class="jxr_keyword">extends</strong> <a href="../../../../../../org/apache/logging/log4j/core/appender/AppenderBase.html">AppenderBase</a> { |
| <a class="jxr_linenumber" name="31" href="#31">31</a> |
| <a class="jxr_linenumber" name="32" href="#32">32</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="33" href="#33">33</a> <em class="jxr_javadoccomment"> * Immediate flush means that the underlying writer or output stream</em> |
| <a class="jxr_linenumber" name="34" href="#34">34</a> <em class="jxr_javadoccomment"> * will be flushed at the end of each append operation. Immediate</em> |
| <a class="jxr_linenumber" name="35" href="#35">35</a> <em class="jxr_javadoccomment"> * flush is slower but ensures that each append request is actually</em> |
| <a class="jxr_linenumber" name="36" href="#36">36</a> <em class="jxr_javadoccomment"> * written. If <code>immediateFlush</code> is set to</em> |
| <a class="jxr_linenumber" name="37" href="#37">37</a> <em class="jxr_javadoccomment"> * <code>false</code>, then there is a good chance that the last few</em> |
| <a class="jxr_linenumber" name="38" href="#38">38</a> <em class="jxr_javadoccomment"> * logs events are not actually written to persistent media if and</em> |
| <a class="jxr_linenumber" name="39" href="#39">39</a> <em class="jxr_javadoccomment"> * when the application crashes.</em> |
| <a class="jxr_linenumber" name="40" href="#40">40</a> <em class="jxr_javadoccomment"> * <p/></em> |
| <a class="jxr_linenumber" name="41" href="#41">41</a> <em class="jxr_javadoccomment"> * <p>The <code>immediateFlush</code> variable is set to</em> |
| <a class="jxr_linenumber" name="42" href="#42">42</a> <em class="jxr_javadoccomment"> * <code>true</code> by default.</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">protected</strong> <strong class="jxr_keyword">boolean</strong> immediateFlush = <strong class="jxr_keyword">true</strong>; |
| <a class="jxr_linenumber" name="45" href="#45">45</a> |
| <a class="jxr_linenumber" name="46" href="#46">46</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">volatile</strong> <a href="../../../../../../org/apache/logging/log4j/core/appender/OutputStreamManager.html">OutputStreamManager</a> manager; |
| <a class="jxr_linenumber" name="47" href="#47">47</a> |
| <a class="jxr_linenumber" name="48" href="#48">48</a> <strong class="jxr_keyword">private</strong> ReadWriteLock rwLock = <strong class="jxr_keyword">new</strong> ReentrantReadWriteLock(); |
| <a class="jxr_linenumber" name="49" href="#49">49</a> <strong class="jxr_keyword">private</strong> Lock readLock = rwLock.readLock(); |
| <a class="jxr_linenumber" name="50" href="#50">50</a> <strong class="jxr_keyword">private</strong> Lock writeLock = rwLock.writeLock(); |
| <a class="jxr_linenumber" name="51" href="#51">51</a> |
| <a class="jxr_linenumber" name="52" href="#52">52</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="53" href="#53">53</a> <em class="jxr_javadoccomment"> * Instantiate a WriterAppender and set the output destination to a</em> |
| <a class="jxr_linenumber" name="54" href="#54">54</a> <em class="jxr_javadoccomment"> * new {@link java.io.OutputStreamWriter} initialized with <code>os</code></em> |
| <a class="jxr_linenumber" name="55" href="#55">55</a> <em class="jxr_javadoccomment"> * as its {@link java.io.OutputStream}.</em> |
| <a class="jxr_linenumber" name="56" href="#56">56</a> <em class="jxr_javadoccomment"> * @param name The name of the Appender.</em> |
| <a class="jxr_linenumber" name="57" href="#57">57</a> <em class="jxr_javadoccomment"> * @param layout The layout to format the message.</em> |
| <a class="jxr_linenumber" name="58" href="#58">58</a> <em class="jxr_javadoccomment"> * @param manager The OutputStreamManager.</em> |
| <a class="jxr_linenumber" name="59" href="#59">59</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="60" href="#60">60</a> <strong class="jxr_keyword">protected</strong> <a href="../../../../../../org/apache/logging/log4j/core/appender/OutputStreamAppender.html">OutputStreamAppender</a>(String name, <a href="../../../../../../org/apache/logging/log4j/core/Layout.html">Layout</a> layout, <a href="../../../../../../org/apache/logging/log4j/core/Filter.html">Filter</a> filter, <strong class="jxr_keyword">boolean</strong> handleException, |
| <a class="jxr_linenumber" name="61" href="#61">61</a> <strong class="jxr_keyword">boolean</strong> immediateFlush, <a href="../../../../../../org/apache/logging/log4j/core/appender/OutputStreamManager.html">OutputStreamManager</a> manager) { |
| <a class="jxr_linenumber" name="62" href="#62">62</a> <strong class="jxr_keyword">super</strong>(name, filter, layout, handleException); |
| <a class="jxr_linenumber" name="63" href="#63">63</a> <strong class="jxr_keyword">if</strong> (layout != <strong class="jxr_keyword">null</strong>) { |
| <a class="jxr_linenumber" name="64" href="#64">64</a> manager.setHeader(layout.getHeader()); |
| <a class="jxr_linenumber" name="65" href="#65">65</a> manager.setFooter(layout.getFooter()); |
| <a class="jxr_linenumber" name="66" href="#66">66</a> } |
| <a class="jxr_linenumber" name="67" href="#67">67</a> <strong class="jxr_keyword">this</strong>.manager = manager; |
| <a class="jxr_linenumber" name="68" href="#68">68</a> <strong class="jxr_keyword">this</strong>.immediateFlush = immediateFlush; |
| <a class="jxr_linenumber" name="69" href="#69">69</a> } |
| <a class="jxr_linenumber" name="70" href="#70">70</a> |
| <a class="jxr_linenumber" name="71" href="#71">71</a> <strong class="jxr_keyword">protected</strong> <a href="../../../../../../org/apache/logging/log4j/core/appender/OutputStreamManager.html">OutputStreamManager</a> getManager() { |
| <a class="jxr_linenumber" name="72" href="#72">72</a> <strong class="jxr_keyword">return</strong> manager; |
| <a class="jxr_linenumber" name="73" href="#73">73</a> } |
| <a class="jxr_linenumber" name="74" href="#74">74</a> |
| <a class="jxr_linenumber" name="75" href="#75">75</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> replaceManager(<a href="../../../../../../org/apache/logging/log4j/core/appender/OutputStreamManager.html">OutputStreamManager</a> newManager) { |
| <a class="jxr_linenumber" name="76" href="#76">76</a> |
| <a class="jxr_linenumber" name="77" href="#77">77</a> writeLock.lock(); |
| <a class="jxr_linenumber" name="78" href="#78">78</a> <strong class="jxr_keyword">try</strong> { |
| <a class="jxr_linenumber" name="79" href="#79">79</a> <a href="../../../../../../org/apache/logging/log4j/core/appender/OutputStreamManager.html">OutputStreamManager</a> old = manager; |
| <a class="jxr_linenumber" name="80" href="#80">80</a> manager = newManager; |
| <a class="jxr_linenumber" name="81" href="#81">81</a> old.release(); |
| <a class="jxr_linenumber" name="82" href="#82">82</a> } <strong class="jxr_keyword">finally</strong> { |
| <a class="jxr_linenumber" name="83" href="#83">83</a> writeLock.unlock(); |
| <a class="jxr_linenumber" name="84" href="#84">84</a> } |
| <a class="jxr_linenumber" name="85" href="#85">85</a> |
| <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> @Override |
| <a class="jxr_linenumber" name="89" href="#89">89</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> start() { |
| <a class="jxr_linenumber" name="90" href="#90">90</a> <strong class="jxr_keyword">if</strong> (getLayout() == <strong class="jxr_keyword">null</strong>) { |
| <a class="jxr_linenumber" name="91" href="#91">91</a> LOGGER.error(<span class="jxr_string">"No layout set for the appender named ["</span> + getName() + <span class="jxr_string">"]."</span>); |
| <a class="jxr_linenumber" name="92" href="#92">92</a> } |
| <a class="jxr_linenumber" name="93" href="#93">93</a> <strong class="jxr_keyword">if</strong> (manager == <strong class="jxr_keyword">null</strong>) { |
| <a class="jxr_linenumber" name="94" href="#94">94</a> LOGGER.error(<span class="jxr_string">"No OutputStreamManager set for the appender named ["</span> + getName() + <span class="jxr_string">"]."</span>); |
| <a class="jxr_linenumber" name="95" href="#95">95</a> } |
| <a class="jxr_linenumber" name="96" href="#96">96</a> <strong class="jxr_keyword">super</strong>.start(); |
| <a class="jxr_linenumber" name="97" href="#97">97</a> } |
| <a class="jxr_linenumber" name="98" href="#98">98</a> |
| <a class="jxr_linenumber" name="99" href="#99">99</a> @Override |
| <a class="jxr_linenumber" name="100" href="#100">100</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> stop() { |
| <a class="jxr_linenumber" name="101" href="#101">101</a> <strong class="jxr_keyword">super</strong>.stop(); |
| <a class="jxr_linenumber" name="102" href="#102">102</a> manager.release(); |
| <a class="jxr_linenumber" name="103" href="#103">103</a> } |
| <a class="jxr_linenumber" name="104" href="#104">104</a> |
| <a class="jxr_linenumber" name="105" href="#105">105</a> <em class="jxr_javadoccomment">/**</em> |
| <a class="jxr_linenumber" name="106" href="#106">106</a> <em class="jxr_javadoccomment"> * Actual writing occurs here.</em> |
| <a class="jxr_linenumber" name="107" href="#107">107</a> <em class="jxr_javadoccomment"> * <p/></em> |
| <a class="jxr_linenumber" name="108" href="#108">108</a> <em class="jxr_javadoccomment"> * <p>Most subclasses of <code>OutputStreamAppender</code> will need to</em> |
| <a class="jxr_linenumber" name="109" href="#109">109</a> <em class="jxr_javadoccomment"> * override this method.</em> |
| <a class="jxr_linenumber" name="110" href="#110">110</a> <em class="jxr_javadoccomment"> * @param event The LogEvent.</em> |
| <a class="jxr_linenumber" name="111" href="#111">111</a> <em class="jxr_javadoccomment"> */</em> |
| <a class="jxr_linenumber" name="112" href="#112">112</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> append(<a href="../../../../../../org/apache/logging/log4j/core/LogEvent.html">LogEvent</a> event) { |
| <a class="jxr_linenumber" name="113" href="#113">113</a> readLock.lock(); |
| <a class="jxr_linenumber" name="114" href="#114">114</a> <strong class="jxr_keyword">try</strong> { |
| <a class="jxr_linenumber" name="115" href="#115">115</a> manager.write(getLayout().format(event)); |
| <a class="jxr_linenumber" name="116" href="#116">116</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.immediateFlush) { |
| <a class="jxr_linenumber" name="117" href="#117">117</a> manager.flush(); |
| <a class="jxr_linenumber" name="118" href="#118">118</a> } |
| <a class="jxr_linenumber" name="119" href="#119">119</a> } <strong class="jxr_keyword">catch</strong> (AppenderRuntimeException ex) { |
| <a class="jxr_linenumber" name="120" href="#120">120</a> error(<span class="jxr_string">"Unable to write to stream "</span> + manager.getName() + <span class="jxr_string">" for appender "</span> + getName()); |
| <a class="jxr_linenumber" name="121" href="#121">121</a> <strong class="jxr_keyword">throw</strong> ex; |
| <a class="jxr_linenumber" name="122" href="#122">122</a> } <strong class="jxr_keyword">finally</strong> { |
| <a class="jxr_linenumber" name="123" href="#123">123</a> readLock.unlock(); |
| <a class="jxr_linenumber" name="124" href="#124">124</a> } |
| <a class="jxr_linenumber" name="125" href="#125">125</a> } |
| <a class="jxr_linenumber" name="126" href="#126">126</a> } |
| </pre> |
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