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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.varia; |
| <a name="19" href="#19">19</a> |
| <a name="20" href="#20">20</a> <strong class="jxr_keyword">import</strong> org.apache.log4j.spi.ErrorHandler; |
| <a name="21" href="#21">21</a> <strong class="jxr_keyword">import</strong> org.apache.log4j.spi.LoggingEvent; |
| <a name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> org.apache.log4j.Appender; |
| <a name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> org.apache.log4j.Logger; |
| <a name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> org.apache.log4j.helpers.LogLog; |
| <a name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> java.util.Vector; |
| <a name="26" href="#26">26</a> <strong class="jxr_keyword">import</strong> java.io.InterruptedIOException; |
| <a name="27" href="#27">27</a> |
| <a name="28" href="#28">28</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="29" href="#29">29</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="30" href="#30">30</a> <em class="jxr_javadoccomment"> * The <code>FallbackErrorHandler</code> implements the ErrorHandler</em> |
| <a name="31" href="#31">31</a> <em class="jxr_javadoccomment"> * interface such that a secondary appender may be specified. This</em> |
| <a name="32" href="#32">32</a> <em class="jxr_javadoccomment"> * secondary appender takes over if the primary appender fails for</em> |
| <a name="33" href="#33">33</a> <em class="jxr_javadoccomment"> * whatever reason.</em> |
| <a name="34" href="#34">34</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="35" href="#35">35</a> <em class="jxr_javadoccomment"> * <p>The error message is printed on <code>System.err</code>, and</em> |
| <a name="36" href="#36">36</a> <em class="jxr_javadoccomment"> * logged in the new secondary appender.</em> |
| <a name="37" href="#37">37</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="38" href="#38">38</a> <em class="jxr_javadoccomment"> * @author Ceki G&uuml;c&uuml;</em> |
| <a name="39" href="#39">39</a> <em class="jxr_javadoccomment"> * */</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/varia/FallbackErrorHandler.html">FallbackErrorHandler</a> implements <a href="../../../../org/apache/log4j/spi/ErrorHandler.html">ErrorHandler</a> { |
| <a name="41" href="#41">41</a> |
| <a name="42" href="#42">42</a> |
| <a name="43" href="#43">43</a> <a href="../../../../org/apache/log4j/Appender.html">Appender</a> backup; |
| <a name="44" href="#44">44</a> <a href="../../../../org/apache/log4j/Appender.html">Appender</a> primary; |
| <a name="45" href="#45">45</a> Vector loggers; |
| <a name="46" href="#46">46</a> |
| <a name="47" href="#47">47</a> <strong class="jxr_keyword">public</strong> <a href="../../../../org/apache/log4j/varia/FallbackErrorHandler.html">FallbackErrorHandler</a>() { |
| <a name="48" href="#48">48</a> } |
| <a name="49" href="#49">49</a> |
| <a name="50" href="#50">50</a> |
| <a name="51" href="#51">51</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="52" href="#52">52</a> <em class="jxr_javadoccomment"> <em>Adds</em> the logger passed as parameter to the list of</em> |
| <a name="53" href="#53">53</a> <em class="jxr_javadoccomment"> loggers that we need to search for in case of appender failure.</em> |
| <a name="54" href="#54">54</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="55" href="#55">55</a> <strong class="jxr_keyword">public</strong> |
| <a name="56" href="#56">56</a> <strong class="jxr_keyword">void</strong> setLogger(<a href="../../../../org/apache/log4j/Logger.html">Logger</a> logger) { |
| <a name="57" href="#57">57</a> LogLog.debug(<span class="jxr_string">"FB: Adding logger ["</span> + logger.getName() + <span class="jxr_string">"]."</span>); |
| <a name="58" href="#58">58</a> <strong class="jxr_keyword">if</strong>(loggers == <strong class="jxr_keyword">null</strong>) { |
| <a name="59" href="#59">59</a> loggers = <strong class="jxr_keyword">new</strong> Vector(); |
| <a name="60" href="#60">60</a> } |
| <a name="61" href="#61">61</a> loggers.addElement(logger); |
| <a name="62" href="#62">62</a> } |
| <a name="63" href="#63">63</a> |
| <a name="64" href="#64">64</a> |
| <a name="65" href="#65">65</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="66" href="#66">66</a> <em class="jxr_javadoccomment"> No options to activate.</em> |
| <a name="67" href="#67">67</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="68" href="#68">68</a> <strong class="jxr_keyword">public</strong> |
| <a name="69" href="#69">69</a> <strong class="jxr_keyword">void</strong> activateOptions() { |
| <a name="70" href="#70">70</a> } |
| <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"> Prints the message and the stack trace of the exception on</em> |
| <a name="75" href="#75">75</a> <em class="jxr_javadoccomment"> <code>System.err</code>. */</em> |
| <a name="76" href="#76">76</a> <strong class="jxr_keyword">public</strong> |
| <a name="77" href="#77">77</a> <strong class="jxr_keyword">void</strong> error(String message, Exception e, <strong class="jxr_keyword">int</strong> errorCode) { |
| <a name="78" href="#78">78</a> error(message, e, errorCode, <strong class="jxr_keyword">null</strong>); |
| <a name="79" href="#79">79</a> } |
| <a name="80" href="#80">80</a> |
| <a name="81" href="#81">81</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="82" href="#82">82</a> <em class="jxr_javadoccomment"> Prints the message and the stack trace of the exception on</em> |
| <a name="83" href="#83">83</a> <em class="jxr_javadoccomment"> <code>System.err</code>.</em> |
| <a name="84" href="#84">84</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="85" href="#85">85</a> <strong class="jxr_keyword">public</strong> |
| <a name="86" href="#86">86</a> <strong class="jxr_keyword">void</strong> error(String message, Exception e, <strong class="jxr_keyword">int</strong> errorCode, <a href="../../../../org/apache/log4j/spi/LoggingEvent.html">LoggingEvent</a> event) { |
| <a name="87" href="#87">87</a> <strong class="jxr_keyword">if</strong> (e instanceof InterruptedIOException) { |
| <a name="88" href="#88">88</a> Thread.currentThread().interrupt(); |
| <a name="89" href="#89">89</a> } |
| <a name="90" href="#90">90</a> LogLog.debug(<span class="jxr_string">"FB: The following error reported: "</span> + message, e); |
| <a name="91" href="#91">91</a> LogLog.debug(<span class="jxr_string">"FB: INITIATING FALLBACK PROCEDURE."</span>); |
| <a name="92" href="#92">92</a> <strong class="jxr_keyword">if</strong> (loggers != <strong class="jxr_keyword">null</strong>) { |
| <a name="93" href="#93">93</a> <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> i = 0; i < loggers.size(); i++) { |
| <a name="94" href="#94">94</a> Logger l = (Logger) loggers.elementAt(i); |
| <a name="95" href="#95">95</a> LogLog.debug(<span class="jxr_string">"FB: Searching for ["</span>+primary.getName()+<span class="jxr_string">"] in logger ["</span> |
| <a name="96" href="#96">96</a> +l.getName() + <span class="jxr_string">"]."</span>); |
| <a name="97" href="#97">97</a> LogLog.debug(<span class="jxr_string">"FB: Replacing ["</span>+primary.getName()+<span class="jxr_string">"] by ["</span> |
| <a name="98" href="#98">98</a> + backup.getName() + <span class="jxr_string">"] in logger ["</span>+ l.getName() +<span class="jxr_string">"]."</span>); |
| <a name="99" href="#99">99</a> l.removeAppender(primary); |
| <a name="100" href="#100">100</a> LogLog.debug(<span class="jxr_string">"FB: Adding appender ["</span>+backup.getName()+<span class="jxr_string">"] to logger "</span> |
| <a name="101" href="#101">101</a> + l.getName()); |
| <a name="102" href="#102">102</a> l.addAppender(backup); |
| <a name="103" href="#103">103</a> } |
| <a name="104" href="#104">104</a> } |
| <a name="105" href="#105">105</a> } |
| <a name="106" href="#106">106</a> |
| <a name="107" href="#107">107</a> |
| <a name="108" href="#108">108</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="109" href="#109">109</a> <em class="jxr_javadoccomment"> Print a the error message passed as parameter on</em> |
| <a name="110" href="#110">110</a> <em class="jxr_javadoccomment"> <code>System.err</code>. </em> |
| <a name="111" href="#111">111</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="112" href="#112">112</a> <strong class="jxr_keyword">public</strong> |
| <a name="113" href="#113">113</a> <strong class="jxr_keyword">void</strong> error(String message) { |
| <a name="114" href="#114">114</a> <em class="jxr_comment">//if(firstTime) {</em> |
| <a name="115" href="#115">115</a> <em class="jxr_comment">//LogLog.error(message);</em> |
| <a name="116" href="#116">116</a> <em class="jxr_comment">//firstTime = false;</em> |
| <a name="117" href="#117">117</a> <em class="jxr_comment">//}</em> |
| <a name="118" href="#118">118</a> } |
| <a name="119" href="#119">119</a> |
| <a name="120" href="#120">120</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="121" href="#121">121</a> <em class="jxr_javadoccomment"> The appender to which this error handler is attached.</em> |
| <a name="122" href="#122">122</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="123" href="#123">123</a> <strong class="jxr_keyword">public</strong> |
| <a name="124" href="#124">124</a> <strong class="jxr_keyword">void</strong> setAppender(<a href="../../../../org/apache/log4j/Appender.html">Appender</a> primary) { |
| <a name="125" href="#125">125</a> LogLog.debug(<span class="jxr_string">"FB: Setting primary appender to ["</span> + primary.getName() + <span class="jxr_string">"]."</span>); |
| <a name="126" href="#126">126</a> <strong class="jxr_keyword">this</strong>.primary = primary; |
| <a name="127" href="#127">127</a> } |
| <a name="128" href="#128">128</a> |
| <a name="129" href="#129">129</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="130" href="#130">130</a> <em class="jxr_javadoccomment"> Set the backup appender.</em> |
| <a name="131" href="#131">131</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="132" href="#132">132</a> <strong class="jxr_keyword">public</strong> |
| <a name="133" href="#133">133</a> <strong class="jxr_keyword">void</strong> setBackupAppender(<a href="../../../../org/apache/log4j/Appender.html">Appender</a> backup) { |
| <a name="134" href="#134">134</a> LogLog.debug(<span class="jxr_string">"FB: Setting backup appender to ["</span> + backup.getName() + <span class="jxr_string">"]."</span>); |
| <a name="135" href="#135">135</a> <strong class="jxr_keyword">this</strong>.backup = backup; |
| <a name="136" href="#136">136</a> } |
| <a name="137" href="#137">137</a> |
| <a name="138" href="#138">138</a> } |
| </pre> |
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