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| <a name="1" href="#1">1</a> <em class="jxr_comment">/*</em> |
| <a name="2" href="#2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em> |
| <a name="3" href="#3">3</a> <em class="jxr_comment"> * contributor license agreements. See the NOTICE file distributed with</em> |
| <a name="4" href="#4">4</a> <em class="jxr_comment"> * this work for additional information regarding copyright ownership.</em> |
| <a 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 name="6" href="#6">6</a> <em class="jxr_comment"> * (the "License"); you may not use this file except in compliance with</em> |
| <a name="7" href="#7">7</a> <em class="jxr_comment"> * the License. You may obtain a copy of the License at</em> |
| <a name="8" href="#8">8</a> <em class="jxr_comment"> * </em> |
| <a 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 name="10" href="#10">10</a> <em class="jxr_comment"> * </em> |
| <a name="11" href="#11">11</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em> |
| <a name="12" href="#12">12</a> <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em> |
| <a name="13" href="#13">13</a> <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em> |
| <a name="14" href="#14">14</a> <em class="jxr_comment"> * See the License for the specific language governing permissions and</em> |
| <a name="15" href="#15">15</a> <em class="jxr_comment"> * limitations under the License.</em> |
| <a name="16" href="#16">16</a> <em class="jxr_comment"> */</em> |
| <a name="17" href="#17">17</a> |
| <a name="18" href="#18">18</a> <strong class="jxr_keyword">package</strong> org.apache.log4j; |
| <a name="19" href="#19">19</a> |
| <a name="20" href="#20">20</a> <strong class="jxr_keyword">import</strong> java.io.IOException; |
| <a name="21" href="#21">21</a> <strong class="jxr_keyword">import</strong> java.io.InterruptedIOException; |
| <a name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> java.io.OutputStream; |
| <a name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> java.io.OutputStreamWriter; |
| <a name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> java.io.Writer; |
| <a name="25" href="#25">25</a> |
| <a name="26" href="#26">26</a> <strong class="jxr_keyword">import</strong> org.apache.log4j.helpers.LogLog; |
| <a name="27" href="#27">27</a> <strong class="jxr_keyword">import</strong> org.apache.log4j.helpers.QuietWriter; |
| <a name="28" href="#28">28</a> <strong class="jxr_keyword">import</strong> org.apache.log4j.spi.ErrorHandler; |
| <a name="29" href="#29">29</a> <strong class="jxr_keyword">import</strong> org.apache.log4j.spi.LoggingEvent; |
| <a name="30" href="#30">30</a> |
| <a name="31" href="#31">31</a> <em class="jxr_comment">// Contibutors: Jens Uwe Pipka <jens.pipka@gmx.de></em> |
| <a name="32" href="#32">32</a> <em class="jxr_comment">// Ben Sandee</em> |
| <a name="33" href="#33">33</a> |
| <a name="34" href="#34">34</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="35" href="#35">35</a> <em class="jxr_javadoccomment"> WriterAppender appends log events to a {@link java.io.Writer} or an</em> |
| <a name="36" href="#36">36</a> <em class="jxr_javadoccomment"> {@link java.io.OutputStream} depending on the user's choice.</em> |
| <a name="37" href="#37">37</a> |
| <a name="38" href="#38">38</a> <em class="jxr_javadoccomment"> @author Ceki G&uuml;lc&uuml;</em> |
| <a name="39" href="#39">39</a> <em class="jxr_javadoccomment"> @since 1.1 */</em> |
| <a name="40" href="#40">40</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../org/apache/log4j/WriterAppender.html">WriterAppender</a> <strong class="jxr_keyword">extends</strong> <a href="../../../org/apache/log4j/AppenderSkeleton.html">AppenderSkeleton</a> { |
| <a name="41" href="#41">41</a> |
| <a name="42" href="#42">42</a> |
| <a name="43" href="#43">43</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="44" href="#44">44</a> <em class="jxr_javadoccomment"> Immediate flush means that the underlying writer or output stream</em> |
| <a name="45" href="#45">45</a> <em class="jxr_javadoccomment"> will be flushed at the end of each append operation unless shouldFlush()</em> |
| <a name="46" href="#46">46</a> <em class="jxr_javadoccomment"> is overridden. Immediate</em> |
| <a name="47" href="#47">47</a> <em class="jxr_javadoccomment"> flush is slower but ensures that each append request is actually</em> |
| <a name="48" href="#48">48</a> <em class="jxr_javadoccomment"> written. If <code>immediateFlush</code> is set to</em> |
| <a name="49" href="#49">49</a> <em class="jxr_javadoccomment"> <code>false</code>, then there is a good chance that the last few</em> |
| <a name="50" href="#50">50</a> <em class="jxr_javadoccomment"> logs events are not actually written to persistent media if and</em> |
| <a name="51" href="#51">51</a> <em class="jxr_javadoccomment"> when the application crashes.</em> |
| <a name="52" href="#52">52</a> |
| <a name="53" href="#53">53</a> <em class="jxr_javadoccomment"> <p>The <code>immediateFlush</code> variable is set to</em> |
| <a name="54" href="#54">54</a> <em class="jxr_javadoccomment"> <code>true</code> by default.</em> |
| <a name="55" href="#55">55</a> |
| <a name="56" href="#56">56</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="57" href="#57">57</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> immediateFlush = <strong class="jxr_keyword">true</strong>; |
| <a name="58" href="#58">58</a> |
| <a name="59" href="#59">59</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="60" href="#60">60</a> <em class="jxr_javadoccomment"> The encoding to use when writing. <p>The</em> |
| <a name="61" href="#61">61</a> <em class="jxr_javadoccomment"> <code>encoding</code> variable is set to <code>null</null> by</em> |
| <a name="62" href="#62">62</a> <em class="jxr_javadoccomment"> default which results in the utilization of the system's default</em> |
| <a name="63" href="#63">63</a> <em class="jxr_javadoccomment"> encoding. */</em> |
| <a name="64" href="#64">64</a> <strong class="jxr_keyword">protected</strong> String encoding; |
| <a name="65" href="#65">65</a> |
| <a name="66" href="#66">66</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="67" href="#67">67</a> <em class="jxr_javadoccomment"> This is the {@link QuietWriter quietWriter} where we will write</em> |
| <a name="68" href="#68">68</a> <em class="jxr_javadoccomment"> to.</em> |
| <a name="69" href="#69">69</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="70" href="#70">70</a> <strong class="jxr_keyword">protected</strong> <a href="../../../org/apache/log4j/helpers/QuietWriter.html">QuietWriter</a> qw; |
| <a name="71" href="#71">71</a> |
| <a name="72" href="#72">72</a> |
| <a name="73" href="#73">73</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="74" href="#74">74</a> <em class="jxr_javadoccomment"> This default constructor does nothing. */</em> |
| <a name="75" href="#75">75</a> <strong class="jxr_keyword">public</strong> |
| <a name="76" href="#76">76</a> <a href="../../../org/apache/log4j/WriterAppender.html">WriterAppender</a>() { |
| <a name="77" href="#77">77</a> } |
| <a name="78" href="#78">78</a> |
| <a name="79" href="#79">79</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="80" href="#80">80</a> <em class="jxr_javadoccomment"> Instantiate a WriterAppender and set the output destination to a</em> |
| <a name="81" href="#81">81</a> <em class="jxr_javadoccomment"> new {@link OutputStreamWriter} initialized with <code>os</code></em> |
| <a name="82" href="#82">82</a> <em class="jxr_javadoccomment"> as its {@link OutputStream}. */</em> |
| <a name="83" href="#83">83</a> <strong class="jxr_keyword">public</strong> |
| <a name="84" href="#84">84</a> <a href="../../../org/apache/log4j/WriterAppender.html">WriterAppender</a>(<a href="../../../org/apache/log4j/Layout.html">Layout</a> layout, OutputStream os) { |
| <a name="85" href="#85">85</a> <strong class="jxr_keyword">this</strong>(layout, <strong class="jxr_keyword">new</strong> OutputStreamWriter(os)); |
| <a name="86" href="#86">86</a> } |
| <a name="87" href="#87">87</a> |
| <a name="88" href="#88">88</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="89" href="#89">89</a> <em class="jxr_javadoccomment"> Instantiate a WriterAppender and set the output destination to</em> |
| <a name="90" href="#90">90</a> <em class="jxr_javadoccomment"> <code>writer</code>.</em> |
| <a name="91" href="#91">91</a> |
| <a name="92" href="#92">92</a> <em class="jxr_javadoccomment"> <p>The <code>writer</code> must have been previously opened by</em> |
| <a name="93" href="#93">93</a> <em class="jxr_javadoccomment"> the user. */</em> |
| <a name="94" href="#94">94</a> <strong class="jxr_keyword">public</strong> |
| <a name="95" href="#95">95</a> <a href="../../../org/apache/log4j/WriterAppender.html">WriterAppender</a>(<a href="../../../org/apache/log4j/Layout.html">Layout</a> layout, Writer writer) { |
| <a name="96" href="#96">96</a> <strong class="jxr_keyword">this</strong>.layout = layout; |
| <a name="97" href="#97">97</a> <strong class="jxr_keyword">this</strong>.setWriter(writer); |
| <a name="98" href="#98">98</a> } |
| <a name="99" href="#99">99</a> |
| <a name="100" href="#100">100</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="101" href="#101">101</a> <em class="jxr_javadoccomment"> If the <b>ImmediateFlush</b> option is set to</em> |
| <a name="102" href="#102">102</a> <em class="jxr_javadoccomment"> <code>true</code>, the appender will flush at the end of each</em> |
| <a name="103" href="#103">103</a> <em class="jxr_javadoccomment"> write. This is the default behavior. If the option is set to</em> |
| <a name="104" href="#104">104</a> <em class="jxr_javadoccomment"> <code>false</code>, then the underlying stream can defer writing</em> |
| <a name="105" href="#105">105</a> <em class="jxr_javadoccomment"> to physical medium to a later time.</em> |
| <a name="106" href="#106">106</a> |
| <a name="107" href="#107">107</a> <em class="jxr_javadoccomment"> <p>Avoiding the flush operation at the end of each append results in</em> |
| <a name="108" href="#108">108</a> <em class="jxr_javadoccomment"> a performance gain of 10 to 20 percent. However, there is safety</em> |
| <a name="109" href="#109">109</a> <em class="jxr_javadoccomment"> tradeoff involved in skipping flushing. Indeed, when flushing is</em> |
| <a name="110" href="#110">110</a> <em class="jxr_javadoccomment"> skipped, then it is likely that the last few log events will not</em> |
| <a name="111" href="#111">111</a> <em class="jxr_javadoccomment"> be recorded on disk when the application exits. This is a high</em> |
| <a name="112" href="#112">112</a> <em class="jxr_javadoccomment"> price to pay even for a 20% performance gain.</em> |
| <a name="113" href="#113">113</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="114" href="#114">114</a> <strong class="jxr_keyword">public</strong> |
| <a name="115" href="#115">115</a> <strong class="jxr_keyword">void</strong> setImmediateFlush(<strong class="jxr_keyword">boolean</strong> value) { |
| <a name="116" href="#116">116</a> immediateFlush = value; |
| <a name="117" href="#117">117</a> } |
| <a name="118" href="#118">118</a> |
| <a name="119" href="#119">119</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="120" href="#120">120</a> <em class="jxr_javadoccomment"> Returns value of the <b>ImmediateFlush</b> option.</em> |
| <a name="121" href="#121">121</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="122" href="#122">122</a> <strong class="jxr_keyword">public</strong> |
| <a name="123" href="#123">123</a> <strong class="jxr_keyword">boolean</strong> getImmediateFlush() { |
| <a name="124" href="#124">124</a> <strong class="jxr_keyword">return</strong> immediateFlush; |
| <a name="125" href="#125">125</a> } |
| <a name="126" href="#126">126</a> |
| <a name="127" href="#127">127</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="128" href="#128">128</a> <em class="jxr_javadoccomment"> Does nothing.</em> |
| <a name="129" href="#129">129</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="130" href="#130">130</a> <strong class="jxr_keyword">public</strong> |
| <a name="131" href="#131">131</a> <strong class="jxr_keyword">void</strong> activateOptions() { |
| <a name="132" href="#132">132</a> } |
| <a name="133" href="#133">133</a> |
| <a name="134" href="#134">134</a> |
| <a name="135" href="#135">135</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="136" href="#136">136</a> <em class="jxr_javadoccomment"> This method is called by the {@link AppenderSkeleton#doAppend}</em> |
| <a name="137" href="#137">137</a> <em class="jxr_javadoccomment"> method.</em> |
| <a name="138" href="#138">138</a> |
| <a name="139" href="#139">139</a> <em class="jxr_javadoccomment"> <p>If the output stream exists and is writable then write a log</em> |
| <a name="140" href="#140">140</a> <em class="jxr_javadoccomment"> statement to the output stream. Otherwise, write a single warning</em> |
| <a name="141" href="#141">141</a> <em class="jxr_javadoccomment"> message to <code>System.err</code>.</em> |
| <a name="142" href="#142">142</a> |
| <a name="143" href="#143">143</a> <em class="jxr_javadoccomment"> <p>The format of the output will depend on this appender's</em> |
| <a name="144" href="#144">144</a> <em class="jxr_javadoccomment"> layout.</em> |
| <a name="145" href="#145">145</a> |
| <a name="146" href="#146">146</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="147" href="#147">147</a> <strong class="jxr_keyword">public</strong> |
| <a name="148" href="#148">148</a> <strong class="jxr_keyword">void</strong> append(<a href="../../../org/apache/log4j/spi/LoggingEvent.html">LoggingEvent</a> event) { |
| <a name="149" href="#149">149</a> |
| <a name="150" href="#150">150</a> <em class="jxr_comment">// Reminder: the nesting of calls is:</em> |
| <a name="151" href="#151">151</a> <em class="jxr_comment">//</em> |
| <a name="152" href="#152">152</a> <em class="jxr_comment">// doAppend()</em> |
| <a name="153" href="#153">153</a> <em class="jxr_comment">// - check threshold</em> |
| <a name="154" href="#154">154</a> <em class="jxr_comment">// - filter</em> |
| <a name="155" href="#155">155</a> <em class="jxr_comment">// - append();</em> |
| <a name="156" href="#156">156</a> <em class="jxr_comment">// - checkEntryConditions();</em> |
| <a name="157" href="#157">157</a> <em class="jxr_comment">// - subAppend();</em> |
| <a name="158" href="#158">158</a> |
| <a name="159" href="#159">159</a> <strong class="jxr_keyword">if</strong>(!checkEntryConditions()) { |
| <a name="160" href="#160">160</a> <strong class="jxr_keyword">return</strong>; |
| <a name="161" href="#161">161</a> } |
| <a name="162" href="#162">162</a> subAppend(event); |
| <a name="163" href="#163">163</a> } |
| <a name="164" href="#164">164</a> |
| <a name="165" href="#165">165</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="166" href="#166">166</a> <em class="jxr_javadoccomment"> This method determines if there is a sense in attempting to append.</em> |
| <a name="167" href="#167">167</a> |
| <a name="168" href="#168">168</a> <em class="jxr_javadoccomment"> <p>It checks whether there is a set output target and also if</em> |
| <a name="169" href="#169">169</a> <em class="jxr_javadoccomment"> there is a set layout. If these checks fail, then the boolean</em> |
| <a name="170" href="#170">170</a> <em class="jxr_javadoccomment"> value <code>false</code> is returned. */</em> |
| <a name="171" href="#171">171</a> <strong class="jxr_keyword">protected</strong> |
| <a name="172" href="#172">172</a> <strong class="jxr_keyword">boolean</strong> checkEntryConditions() { |
| <a name="173" href="#173">173</a> <strong class="jxr_keyword">if</strong>(<strong class="jxr_keyword">this</strong>.closed) { |
| <a name="174" href="#174">174</a> LogLog.warn(<span class="jxr_string">"Not allowed to write to a closed appender."</span>); |
| <a name="175" href="#175">175</a> <strong class="jxr_keyword">return</strong> false; |
| <a name="176" href="#176">176</a> } |
| <a name="177" href="#177">177</a> |
| <a name="178" href="#178">178</a> <strong class="jxr_keyword">if</strong>(<strong class="jxr_keyword">this</strong>.qw == <strong class="jxr_keyword">null</strong>) { |
| <a name="179" href="#179">179</a> errorHandler.error(<span class="jxr_string">"No output stream or file set for the appender named ["</span>+ |
| <a name="180" href="#180">180</a> name+<span class="jxr_string">"]."</span>); |
| <a name="181" href="#181">181</a> <strong class="jxr_keyword">return</strong> false; |
| <a name="182" href="#182">182</a> } |
| <a name="183" href="#183">183</a> |
| <a name="184" href="#184">184</a> <strong class="jxr_keyword">if</strong>(<strong class="jxr_keyword">this</strong>.layout == <strong class="jxr_keyword">null</strong>) { |
| <a name="185" href="#185">185</a> errorHandler.error(<span class="jxr_string">"No layout set for the appender named ["</span>+ name+<span class="jxr_string">"]."</span>); |
| <a name="186" href="#186">186</a> <strong class="jxr_keyword">return</strong> false; |
| <a name="187" href="#187">187</a> } |
| <a name="188" href="#188">188</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>; |
| <a name="189" href="#189">189</a> } |
| <a name="190" href="#190">190</a> |
| <a name="191" href="#191">191</a> |
| <a name="192" href="#192">192</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="193" href="#193">193</a> <em class="jxr_javadoccomment"> Close this appender instance. The underlying stream or writer is</em> |
| <a name="194" href="#194">194</a> <em class="jxr_javadoccomment"> also closed.</em> |
| <a name="195" href="#195">195</a> |
| <a name="196" href="#196">196</a> <em class="jxr_javadoccomment"> <p>Closed appenders cannot be reused.</em> |
| <a name="197" href="#197">197</a> |
| <a name="198" href="#198">198</a> <em class="jxr_javadoccomment"> @see #setWriter</em> |
| <a name="199" href="#199">199</a> <em class="jxr_javadoccomment"> @since 0.8.4 */</em> |
| <a name="200" href="#200">200</a> <strong class="jxr_keyword">public</strong> |
| <a name="201" href="#201">201</a> <strong class="jxr_keyword">synchronized</strong> |
| <a name="202" href="#202">202</a> <strong class="jxr_keyword">void</strong> close() { |
| <a name="203" href="#203">203</a> <strong class="jxr_keyword">if</strong>(<strong class="jxr_keyword">this</strong>.closed) |
| <a name="204" href="#204">204</a> <strong class="jxr_keyword">return</strong>; |
| <a name="205" href="#205">205</a> <strong class="jxr_keyword">this</strong>.closed = <strong class="jxr_keyword">true</strong>; |
| <a name="206" href="#206">206</a> writeFooter(); |
| <a name="207" href="#207">207</a> reset(); |
| <a name="208" href="#208">208</a> } |
| <a name="209" href="#209">209</a> |
| <a name="210" href="#210">210</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="211" href="#211">211</a> <em class="jxr_javadoccomment"> * Close the underlying {@link java.io.Writer}.</em> |
| <a name="212" href="#212">212</a> <em class="jxr_javadoccomment"> * */</em> |
| <a name="213" href="#213">213</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">void</strong> closeWriter() { |
| <a name="214" href="#214">214</a> <strong class="jxr_keyword">if</strong>(qw != <strong class="jxr_keyword">null</strong>) { |
| <a name="215" href="#215">215</a> <strong class="jxr_keyword">try</strong> { |
| <a name="216" href="#216">216</a> qw.close(); |
| <a name="217" href="#217">217</a> } <strong class="jxr_keyword">catch</strong>(IOException e) { |
| <a name="218" href="#218">218</a> <strong class="jxr_keyword">if</strong> (e instanceof InterruptedIOException) { |
| <a name="219" href="#219">219</a> Thread.currentThread().interrupt(); |
| <a name="220" href="#220">220</a> } |
| <a name="221" href="#221">221</a> <em class="jxr_comment">// There is do need to invoke an error handler at this late</em> |
| <a name="222" href="#222">222</a> <em class="jxr_comment">// stage.</em> |
| <a name="223" href="#223">223</a> LogLog.error(<span class="jxr_string">"Could not close "</span> + qw, e); |
| <a name="224" href="#224">224</a> } |
| <a name="225" href="#225">225</a> } |
| <a name="226" href="#226">226</a> } |
| <a name="227" href="#227">227</a> |
| <a name="228" href="#228">228</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="229" href="#229">229</a> <em class="jxr_javadoccomment"> Returns an OutputStreamWriter when passed an OutputStream. The</em> |
| <a name="230" href="#230">230</a> <em class="jxr_javadoccomment"> encoding used will depend on the value of the</em> |
| <a name="231" href="#231">231</a> <em class="jxr_javadoccomment"> <code>encoding</code> property. If the encoding value is</em> |
| <a name="232" href="#232">232</a> <em class="jxr_javadoccomment"> specified incorrectly the writer will be opened using the default</em> |
| <a name="233" href="#233">233</a> <em class="jxr_javadoccomment"> system encoding (an error message will be printed to the loglog. */</em> |
| <a name="234" href="#234">234</a> <strong class="jxr_keyword">protected</strong> |
| <a name="235" href="#235">235</a> OutputStreamWriter createWriter(OutputStream os) { |
| <a name="236" href="#236">236</a> OutputStreamWriter retval = <strong class="jxr_keyword">null</strong>; |
| <a name="237" href="#237">237</a> |
| <a name="238" href="#238">238</a> String enc = getEncoding(); |
| <a name="239" href="#239">239</a> <strong class="jxr_keyword">if</strong>(enc != <strong class="jxr_keyword">null</strong>) { |
| <a name="240" href="#240">240</a> <strong class="jxr_keyword">try</strong> { |
| <a name="241" href="#241">241</a> retval = <strong class="jxr_keyword">new</strong> OutputStreamWriter(os, enc); |
| <a name="242" href="#242">242</a> } <strong class="jxr_keyword">catch</strong>(IOException e) { |
| <a name="243" href="#243">243</a> <strong class="jxr_keyword">if</strong> (e instanceof InterruptedIOException) { |
| <a name="244" href="#244">244</a> Thread.currentThread().interrupt(); |
| <a name="245" href="#245">245</a> } |
| <a name="246" href="#246">246</a> LogLog.warn(<span class="jxr_string">"Error initializing output writer."</span>); |
| <a name="247" href="#247">247</a> LogLog.warn(<span class="jxr_string">"Unsupported encoding?"</span>); |
| <a name="248" href="#248">248</a> } |
| <a name="249" href="#249">249</a> } |
| <a name="250" href="#250">250</a> <strong class="jxr_keyword">if</strong>(retval == <strong class="jxr_keyword">null</strong>) { |
| <a name="251" href="#251">251</a> retval = <strong class="jxr_keyword">new</strong> OutputStreamWriter(os); |
| <a name="252" href="#252">252</a> } |
| <a name="253" href="#253">253</a> <strong class="jxr_keyword">return</strong> retval; |
| <a name="254" href="#254">254</a> } |
| <a name="255" href="#255">255</a> |
| <a name="256" href="#256">256</a> <strong class="jxr_keyword">public</strong> String getEncoding() { |
| <a name="257" href="#257">257</a> <strong class="jxr_keyword">return</strong> encoding; |
| <a name="258" href="#258">258</a> } |
| <a name="259" href="#259">259</a> |
| <a name="260" href="#260">260</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> setEncoding(String value) { |
| <a name="261" href="#261">261</a> encoding = value; |
| <a name="262" href="#262">262</a> } |
| <a name="263" href="#263">263</a> |
| <a name="264" href="#264">264</a> |
| <a name="265" href="#265">265</a> |
| <a name="266" href="#266">266</a> |
| <a name="267" href="#267">267</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="268" href="#268">268</a> <em class="jxr_javadoccomment"> Set the {@link ErrorHandler} for this WriterAppender and also the</em> |
| <a name="269" href="#269">269</a> <em class="jxr_javadoccomment"> underlying {@link QuietWriter} if any. */</em> |
| <a name="270" href="#270">270</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">void</strong> setErrorHandler(<a href="../../../org/apache/log4j/spi/ErrorHandler.html">ErrorHandler</a> eh) { |
| <a name="271" href="#271">271</a> <strong class="jxr_keyword">if</strong>(eh == <strong class="jxr_keyword">null</strong>) { |
| <a name="272" href="#272">272</a> LogLog.warn(<span class="jxr_string">"You have tried to set a null error-handler."</span>); |
| <a name="273" href="#273">273</a> } <strong class="jxr_keyword">else</strong> { |
| <a name="274" href="#274">274</a> <strong class="jxr_keyword">this</strong>.errorHandler = eh; |
| <a name="275" href="#275">275</a> <strong class="jxr_keyword">if</strong>(<strong class="jxr_keyword">this</strong>.qw != <strong class="jxr_keyword">null</strong>) { |
| <a name="276" href="#276">276</a> <strong class="jxr_keyword">this</strong>.qw.setErrorHandler(eh); |
| <a name="277" href="#277">277</a> } |
| <a name="278" href="#278">278</a> } |
| <a name="279" href="#279">279</a> } |
| <a name="280" href="#280">280</a> |
| <a name="281" href="#281">281</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="282" href="#282">282</a> <em class="jxr_javadoccomment"> <p>Sets the Writer where the log output will go. The</em> |
| <a name="283" href="#283">283</a> <em class="jxr_javadoccomment"> specified Writer must be opened by the user and be</em> |
| <a name="284" href="#284">284</a> <em class="jxr_javadoccomment"> writable.</em> |
| <a name="285" href="#285">285</a> |
| <a name="286" href="#286">286</a> <em class="jxr_javadoccomment"> <p>The <code>java.io.Writer</code> will be closed when the</em> |
| <a name="287" href="#287">287</a> <em class="jxr_javadoccomment"> appender instance is closed.</em> |
| <a name="288" href="#288">288</a> |
| <a name="289" href="#289">289</a> |
| <a name="290" href="#290">290</a> <em class="jxr_javadoccomment"> <p><b>WARNING:</b> Logging to an unopened Writer will fail.</em> |
| <a name="291" href="#291">291</a> <em class="jxr_javadoccomment"> <p></em> |
| <a name="292" href="#292">292</a> <em class="jxr_javadoccomment"> @param writer An already opened Writer. */</em> |
| <a name="293" href="#293">293</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">synchronized</strong> <strong class="jxr_keyword">void</strong> setWriter(Writer writer) { |
| <a name="294" href="#294">294</a> reset(); |
| <a name="295" href="#295">295</a> <strong class="jxr_keyword">this</strong>.qw = <strong class="jxr_keyword">new</strong> <a href="../../../org/apache/log4j/helpers/QuietWriter.html">QuietWriter</a>(writer, errorHandler); |
| <a name="296" href="#296">296</a> <em class="jxr_comment">//this.tp = new TracerPrintWriter(qw);</em> |
| <a name="297" href="#297">297</a> writeHeader(); |
| <a name="298" href="#298">298</a> } |
| <a name="299" href="#299">299</a> |
| <a name="300" href="#300">300</a> |
| <a name="301" href="#301">301</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="302" href="#302">302</a> <em class="jxr_javadoccomment"> Actual writing occurs here.</em> |
| <a name="303" href="#303">303</a> |
| <a name="304" href="#304">304</a> <em class="jxr_javadoccomment"> <p>Most subclasses of <code>WriterAppender</code> will need to</em> |
| <a name="305" href="#305">305</a> <em class="jxr_javadoccomment"> override this method.</em> |
| <a name="306" href="#306">306</a> |
| <a name="307" href="#307">307</a> <em class="jxr_javadoccomment"> @since 0.9.0 */</em> |
| <a name="308" href="#308">308</a> <strong class="jxr_keyword">protected</strong> |
| <a name="309" href="#309">309</a> <strong class="jxr_keyword">void</strong> subAppend(<a href="../../../org/apache/log4j/spi/LoggingEvent.html">LoggingEvent</a> event) { |
| <a name="310" href="#310">310</a> <strong class="jxr_keyword">this</strong>.qw.write(<strong class="jxr_keyword">this</strong>.layout.format(event)); |
| <a name="311" href="#311">311</a> |
| <a name="312" href="#312">312</a> <strong class="jxr_keyword">if</strong>(layout.ignoresThrowable()) { |
| <a name="313" href="#313">313</a> String[] s = event.getThrowableStrRep(); |
| <a name="314" href="#314">314</a> <strong class="jxr_keyword">if</strong> (s != <strong class="jxr_keyword">null</strong>) { |
| <a name="315" href="#315">315</a> <strong class="jxr_keyword">int</strong> len = s.length; |
| <a name="316" href="#316">316</a> <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> i = 0; i < len; i++) { |
| <a name="317" href="#317">317</a> <strong class="jxr_keyword">this</strong>.qw.write(s[i]); |
| <a name="318" href="#318">318</a> <strong class="jxr_keyword">this</strong>.qw.write(Layout.LINE_SEP); |
| <a name="319" href="#319">319</a> } |
| <a name="320" href="#320">320</a> } |
| <a name="321" href="#321">321</a> } |
| <a name="322" href="#322">322</a> |
| <a name="323" href="#323">323</a> <strong class="jxr_keyword">if</strong>(shouldFlush(event)) { |
| <a name="324" href="#324">324</a> <strong class="jxr_keyword">this</strong>.qw.flush(); |
| <a name="325" href="#325">325</a> } |
| <a name="326" href="#326">326</a> } |
| <a name="327" href="#327">327</a> |
| <a name="328" href="#328">328</a> |
| <a name="329" href="#329">329</a> |
| <a name="330" href="#330">330</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="331" href="#331">331</a> <em class="jxr_javadoccomment"> The WriterAppender requires a layout. Hence, this method returns</em> |
| <a name="332" href="#332">332</a> <em class="jxr_javadoccomment"> <code>true</code>.</em> |
| <a name="333" href="#333">333</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="334" href="#334">334</a> <strong class="jxr_keyword">public</strong> |
| <a name="335" href="#335">335</a> <strong class="jxr_keyword">boolean</strong> requiresLayout() { |
| <a name="336" href="#336">336</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>; |
| <a name="337" href="#337">337</a> } |
| <a name="338" href="#338">338</a> |
| <a name="339" href="#339">339</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="340" href="#340">340</a> <em class="jxr_javadoccomment"> Clear internal references to the writer and other variables.</em> |
| <a name="341" href="#341">341</a> |
| <a name="342" href="#342">342</a> <em class="jxr_javadoccomment"> Subclasses can override this method for an alternate closing</em> |
| <a name="343" href="#343">343</a> <em class="jxr_javadoccomment"> behavior. */</em> |
| <a name="344" href="#344">344</a> <strong class="jxr_keyword">protected</strong> |
| <a name="345" href="#345">345</a> <strong class="jxr_keyword">void</strong> reset() { |
| <a name="346" href="#346">346</a> closeWriter(); |
| <a name="347" href="#347">347</a> <strong class="jxr_keyword">this</strong>.qw = <strong class="jxr_keyword">null</strong>; |
| <a name="348" href="#348">348</a> <em class="jxr_comment">//this.tp = null;</em> |
| <a name="349" href="#349">349</a> } |
| <a name="350" href="#350">350</a> |
| <a name="351" href="#351">351</a> |
| <a name="352" href="#352">352</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="353" href="#353">353</a> <em class="jxr_javadoccomment"> Write a footer as produced by the embedded layout's {@link</em> |
| <a name="354" href="#354">354</a> <em class="jxr_javadoccomment"> Layout#getFooter} method. */</em> |
| <a name="355" href="#355">355</a> <strong class="jxr_keyword">protected</strong> |
| <a name="356" href="#356">356</a> <strong class="jxr_keyword">void</strong> writeFooter() { |
| <a name="357" href="#357">357</a> <strong class="jxr_keyword">if</strong>(layout != <strong class="jxr_keyword">null</strong>) { |
| <a name="358" href="#358">358</a> String f = layout.getFooter(); |
| <a name="359" href="#359">359</a> <strong class="jxr_keyword">if</strong>(f != <strong class="jxr_keyword">null</strong> && <strong class="jxr_keyword">this</strong>.qw != <strong class="jxr_keyword">null</strong>) { |
| <a name="360" href="#360">360</a> <strong class="jxr_keyword">this</strong>.qw.write(f); |
| <a name="361" href="#361">361</a> <strong class="jxr_keyword">this</strong>.qw.flush(); |
| <a name="362" href="#362">362</a> } |
| <a name="363" href="#363">363</a> } |
| <a name="364" href="#364">364</a> } |
| <a name="365" href="#365">365</a> |
| <a name="366" href="#366">366</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="367" href="#367">367</a> <em class="jxr_javadoccomment"> Write a header as produced by the embedded layout's {@link</em> |
| <a name="368" href="#368">368</a> <em class="jxr_javadoccomment"> Layout#getHeader} method. */</em> |
| <a name="369" href="#369">369</a> <strong class="jxr_keyword">protected</strong> |
| <a name="370" href="#370">370</a> <strong class="jxr_keyword">void</strong> writeHeader() { |
| <a name="371" href="#371">371</a> <strong class="jxr_keyword">if</strong>(layout != <strong class="jxr_keyword">null</strong>) { |
| <a name="372" href="#372">372</a> String h = layout.getHeader(); |
| <a name="373" href="#373">373</a> <strong class="jxr_keyword">if</strong>(h != <strong class="jxr_keyword">null</strong> && <strong class="jxr_keyword">this</strong>.qw != <strong class="jxr_keyword">null</strong>) |
| <a name="374" href="#374">374</a> <strong class="jxr_keyword">this</strong>.qw.write(h); |
| <a name="375" href="#375">375</a> } |
| <a name="376" href="#376">376</a> } |
| <a name="377" href="#377">377</a> |
| <a name="378" href="#378">378</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="379" href="#379">379</a> <em class="jxr_javadoccomment"> * Determines whether the writer should be flushed after</em> |
| <a name="380" href="#380">380</a> <em class="jxr_javadoccomment"> * this event is written.</em> |
| <a name="381" href="#381">381</a> <em class="jxr_javadoccomment"> * </em> |
| <a name="382" href="#382">382</a> <em class="jxr_javadoccomment"> * @since 1.2.16</em> |
| <a name="383" href="#383">383</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="384" href="#384">384</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">boolean</strong> shouldFlush(<strong class="jxr_keyword">final</strong> <a href="../../../org/apache/log4j/spi/LoggingEvent.html">LoggingEvent</a> event) { |
| <a name="385" href="#385">385</a> <strong class="jxr_keyword">return</strong> immediateFlush; |
| <a name="386" href="#386">386</a> } |
| <a name="387" href="#387">387</a> } |
| </pre> |
| <hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/">Maven</a></div></body> |
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