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apache / logging-site / a4f88a44f9ece0268ea2d36ba57a00f2b881cabc / . / content / log4j / 2.13.0 / log4j-core / xref / org / apache / logging / log4j / core / appender / db / AbstractDatabaseAppender.html
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<div id="overview"><a href="../../../../../../../../apidocs/org/apache/logging/log4j/core/appender/db/AbstractDatabaseAppender.html">View Javadoc</a></div><pre>
<a class="jxr_linenumber" name="L1" href="#L1">1</a> <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="L2" href="#L2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em>
<a class="jxr_linenumber" name="L3" href="#L3">3</a> <em class="jxr_comment"> * contributor license agreements. See the NOTICE file distributed with</em>
<a class="jxr_linenumber" name="L4" href="#L4">4</a> <em class="jxr_comment"> * this work for additional information regarding copyright ownership.</em>
<a class="jxr_linenumber" name="L5" href="#L5">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="L6" href="#L6">6</a> <em class="jxr_comment"> * (the "License"); you may not use this file except in compliance with</em>
<a class="jxr_linenumber" name="L7" href="#L7">7</a> <em class="jxr_comment"> * the License. You may obtain a copy of the License at</em>
<a class="jxr_linenumber" name="L8" href="#L8">8</a> <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="L9" href="#L9">9</a> <em class="jxr_comment"> * <a href="http://www.apache.org/licenses/LICENSE-2." target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.</a>0</em>
<a class="jxr_linenumber" name="L10" href="#L10">10</a> <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="L11" href="#L11">11</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="L12" href="#L12">12</a> <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a class="jxr_linenumber" name="L13" href="#L13">13</a> <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a class="jxr_linenumber" name="L14" href="#L14">14</a> <em class="jxr_comment"> * See the license for the specific language governing permissions and</em>
<a class="jxr_linenumber" name="L15" href="#L15">15</a> <em class="jxr_comment"> * limitations under the license.</em>
<a class="jxr_linenumber" name="L16" href="#L16">16</a> <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="L17" href="#L17">17</a> <strong class="jxr_keyword">package</strong> org.apache.logging.log4j.core.appender.db;
<a class="jxr_linenumber" name="L18" href="#L18">18</a>
<a class="jxr_linenumber" name="L19" href="#L19">19</a> <strong class="jxr_keyword">import</strong> java.io.Serializable;
<a class="jxr_linenumber" name="L20" href="#L20">20</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.TimeUnit;
<a class="jxr_linenumber" name="L21" href="#L21">21</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.locks.Lock;
<a class="jxr_linenumber" name="L22" href="#L22">22</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.locks.ReadWriteLock;
<a class="jxr_linenumber" name="L23" href="#L23">23</a> <strong class="jxr_keyword">import</strong> java.util.concurrent.locks.ReentrantReadWriteLock;
<a class="jxr_linenumber" name="L24" href="#L24">24</a>
<a class="jxr_linenumber" name="L25" href="#L25">25</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.LoggingException;
<a class="jxr_linenumber" name="L26" href="#L26">26</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.Filter;
<a class="jxr_linenumber" name="L27" href="#L27">27</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.Layout;
<a class="jxr_linenumber" name="L28" href="#L28">28</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.LogEvent;
<a class="jxr_linenumber" name="L29" href="#L29">29</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.appender.AbstractAppender;
<a class="jxr_linenumber" name="L30" href="#L30">30</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.appender.AppenderLoggingException;
<a class="jxr_linenumber" name="L31" href="#L31">31</a> <strong class="jxr_keyword">import</strong> org.apache.logging.log4j.core.config.Property;
<a class="jxr_linenumber" name="L32" href="#L32">32</a>
<a class="jxr_linenumber" name="L33" href="#L33">33</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L34" href="#L34">34</a> <em class="jxr_javadoccomment"> * An abstract Appender for writing events to a database of some type, be it relational or NoSQL. All database appenders</em>
<a class="jxr_linenumber" name="L35" href="#L35">35</a> <em class="jxr_javadoccomment"> * should inherit from this base appender. Three implementations are currently provided:</em>
<a class="jxr_linenumber" name="L36" href="#L36">36</a> <em class="jxr_javadoccomment"> * {@link org.apache.logging.log4j.core.appender.db.jdbc JDBC}, {@link org.apache.logging.log4j.core.appender.db.jpa</em>
<a class="jxr_linenumber" name="L37" href="#L37">37</a> <em class="jxr_javadoccomment"> * JPA}, and {@link org.apache.logging.log4j.core.appender.nosql NoSQL}.</em>
<a class="jxr_linenumber" name="L38" href="#L38">38</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="L39" href="#L39">39</a> <em class="jxr_javadoccomment"> * @param &lt;T&gt; Specifies which type of {@link AbstractDatabaseManager} this Appender requires.</em>
<a class="jxr_linenumber" name="L40" href="#L40">40</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L41" href="#L41">41</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">abstract</strong> <strong class="jxr_keyword">class</strong> AbstractDatabaseAppender&lt;T <strong class="jxr_keyword">extends</strong> AbstractDatabaseManager&gt; <strong class="jxr_keyword">extends</strong> <a href="../../../../../../../org/apache/logging/log4j/core/appender/AbstractAppender.html">AbstractAppender</a> {
<a class="jxr_linenumber" name="L42" href="#L42">42</a>
<a class="jxr_linenumber" name="L43" href="#L43">43</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> Builder&lt;B <strong class="jxr_keyword">extends</strong> Builder&lt;B&gt;&gt; <strong class="jxr_keyword">extends</strong> AbstractAppender.Builder&lt;B&gt; {
<a class="jxr_linenumber" name="L44" href="#L44">44</a> <em class="jxr_comment">// empty for now.</em>
<a class="jxr_linenumber" name="L45" href="#L45">45</a> }
<a class="jxr_linenumber" name="L46" href="#L46">46</a>
<a class="jxr_linenumber" name="L47" href="#L47">47</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> DEFAULT_RECONNECT_INTERVAL_MILLIS = 5000;
<a class="jxr_linenumber" name="L48" href="#L48">48</a>
<a class="jxr_linenumber" name="L49" href="#L49">49</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> ReadWriteLock lock = <strong class="jxr_keyword">new</strong> ReentrantReadWriteLock();
<a class="jxr_linenumber" name="L50" href="#L50">50</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Lock readLock = lock.readLock();
<a class="jxr_linenumber" name="L51" href="#L51">51</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> Lock writeLock = lock.writeLock();
<a class="jxr_linenumber" name="L52" href="#L52">52</a> <strong class="jxr_keyword">private</strong> T manager;
<a class="jxr_linenumber" name="L53" href="#L53">53</a>
<a class="jxr_linenumber" name="L54" href="#L54">54</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L55" href="#L55">55</a> <em class="jxr_javadoccomment"> * Instantiates the base appender.</em>
<a class="jxr_linenumber" name="L56" href="#L56">56</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="L57" href="#L57">57</a> <em class="jxr_javadoccomment"> * @param name The appender name.</em>
<a class="jxr_linenumber" name="L58" href="#L58">58</a> <em class="jxr_javadoccomment"> * @param filter The filter, if any, to use.</em>
<a class="jxr_linenumber" name="L59" href="#L59">59</a> <em class="jxr_javadoccomment"> * @param ignoreExceptions If {@code true} exceptions encountered when appending events are logged; otherwise</em>
<a class="jxr_linenumber" name="L60" href="#L60">60</a> <em class="jxr_javadoccomment"> * they are propagated to the caller.</em>
<a class="jxr_linenumber" name="L61" href="#L61">61</a> <em class="jxr_javadoccomment"> * @param manager The matching {@link AbstractDatabaseManager} implementation.</em>
<a class="jxr_linenumber" name="L62" href="#L62">62</a> <em class="jxr_javadoccomment"> * @deprecated Use {@link #AbstractDatabaseAppender(String, Filter, Layout, boolean, Property[], AbstractDatabaseManager)}.</em>
<a class="jxr_linenumber" name="L63" href="#L63">63</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L64" href="#L64">64</a> @Deprecated
<a class="jxr_linenumber" name="L65" href="#L65">65</a> <strong class="jxr_keyword">protected</strong> <a href="../../../../../../../org/apache/logging/log4j/core/appender/db/AbstractDatabaseAppender.html">AbstractDatabaseAppender</a>(<strong class="jxr_keyword">final</strong> String name, <strong class="jxr_keyword">final</strong> <a href="../../../../../../../org/apache/logging/log4j/core/Filter.html">Filter</a> filter, <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> ignoreExceptions,
<a class="jxr_linenumber" name="L66" href="#L66">66</a> <strong class="jxr_keyword">final</strong> T manager) {
<a class="jxr_linenumber" name="L67" href="#L67">67</a> <strong class="jxr_keyword">super</strong>(name, filter, <strong class="jxr_keyword">null</strong>, ignoreExceptions, Property.EMPTY_ARRAY);
<a class="jxr_linenumber" name="L68" href="#L68">68</a> <strong class="jxr_keyword">this</strong>.manager = manager;
<a class="jxr_linenumber" name="L69" href="#L69">69</a> }
<a class="jxr_linenumber" name="L70" href="#L70">70</a>
<a class="jxr_linenumber" name="L71" href="#L71">71</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L72" href="#L72">72</a> <em class="jxr_javadoccomment"> * Instantiates the base appender.</em>
<a class="jxr_linenumber" name="L73" href="#L73">73</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="L74" href="#L74">74</a> <em class="jxr_javadoccomment"> * @param name The appender name.</em>
<a class="jxr_linenumber" name="L75" href="#L75">75</a> <em class="jxr_javadoccomment"> * @param filter The filter, if any, to use.</em>
<a class="jxr_linenumber" name="L76" href="#L76">76</a> <em class="jxr_javadoccomment"> * @param layout The layout to use to format the event.</em>
<a class="jxr_linenumber" name="L77" href="#L77">77</a> <em class="jxr_javadoccomment"> * @param ignoreExceptions If {@code true} exceptions encountered when appending events are logged; otherwise</em>
<a class="jxr_linenumber" name="L78" href="#L78">78</a> <em class="jxr_javadoccomment"> * they are propagated to the caller.</em>
<a class="jxr_linenumber" name="L79" href="#L79">79</a> <em class="jxr_javadoccomment"> * @param manager The matching {@link AbstractDatabaseManager} implementation.</em>
<a class="jxr_linenumber" name="L80" href="#L80">80</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L81" href="#L81">81</a> <strong class="jxr_keyword">protected</strong> <a href="../../../../../../../org/apache/logging/log4j/core/appender/db/AbstractDatabaseAppender.html">AbstractDatabaseAppender</a>(<strong class="jxr_keyword">final</strong> String name, <strong class="jxr_keyword">final</strong> <a href="../../../../../../../org/apache/logging/log4j/core/Filter.html">Filter</a> filter,
<a class="jxr_linenumber" name="L82" href="#L82">82</a> <strong class="jxr_keyword">final</strong> Layout&lt;? <strong class="jxr_keyword">extends</strong> Serializable&gt; layout, <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> ignoreExceptions,
<a class="jxr_linenumber" name="L83" href="#L83">83</a> <strong class="jxr_keyword">final</strong> <a href="../../../../../../../org/apache/logging/log4j/core/config/Property.html">Property</a>[] properties, <strong class="jxr_keyword">final</strong> T manager) {
<a class="jxr_linenumber" name="L84" href="#L84">84</a> <strong class="jxr_keyword">super</strong>(name, filter, layout, ignoreExceptions, properties);
<a class="jxr_linenumber" name="L85" href="#L85">85</a> <strong class="jxr_keyword">this</strong>.manager = manager;
<a class="jxr_linenumber" name="L86" href="#L86">86</a> }
<a class="jxr_linenumber" name="L87" href="#L87">87</a>
<a class="jxr_linenumber" name="L88" href="#L88">88</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L89" href="#L89">89</a> <em class="jxr_javadoccomment"> * Instantiates the base appender.</em>
<a class="jxr_linenumber" name="L90" href="#L90">90</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="L91" href="#L91">91</a> <em class="jxr_javadoccomment"> * @param name The appender name.</em>
<a class="jxr_linenumber" name="L92" href="#L92">92</a> <em class="jxr_javadoccomment"> * @param filter The filter, if any, to use.</em>
<a class="jxr_linenumber" name="L93" href="#L93">93</a> <em class="jxr_javadoccomment"> * @param layout The layout to use to format the event.</em>
<a class="jxr_linenumber" name="L94" href="#L94">94</a> <em class="jxr_javadoccomment"> * @param ignoreExceptions If {@code true} exceptions encountered when appending events are logged; otherwise</em>
<a class="jxr_linenumber" name="L95" href="#L95">95</a> <em class="jxr_javadoccomment"> * they are propagated to the caller.</em>
<a class="jxr_linenumber" name="L96" href="#L96">96</a> <em class="jxr_javadoccomment"> * @param manager The matching {@link AbstractDatabaseManager} implementation.</em>
<a class="jxr_linenumber" name="L97" href="#L97">97</a> <em class="jxr_javadoccomment"> * @deprecated Use {@link #AbstractDatabaseAppender(String, Filter, Layout, boolean, Property[], AbstractDatabaseManager)}</em>
<a class="jxr_linenumber" name="L98" href="#L98">98</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L99" href="#L99">99</a> @Deprecated
<a class="jxr_linenumber" name="L100" href="#L100">100</a> <strong class="jxr_keyword">protected</strong> <a href="../../../../../../../org/apache/logging/log4j/core/appender/db/AbstractDatabaseAppender.html">AbstractDatabaseAppender</a>(<strong class="jxr_keyword">final</strong> String name, <strong class="jxr_keyword">final</strong> <a href="../../../../../../../org/apache/logging/log4j/core/Filter.html">Filter</a> filter,
<a class="jxr_linenumber" name="L101" href="#L101">101</a> <strong class="jxr_keyword">final</strong> Layout&lt;? <strong class="jxr_keyword">extends</strong> Serializable&gt; layout, <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> ignoreExceptions, <strong class="jxr_keyword">final</strong> T manager) {
<a class="jxr_linenumber" name="L102" href="#L102">102</a> <strong class="jxr_keyword">super</strong>(name, filter, layout, ignoreExceptions, Property.EMPTY_ARRAY);
<a class="jxr_linenumber" name="L103" href="#L103">103</a> <strong class="jxr_keyword">this</strong>.manager = manager;
<a class="jxr_linenumber" name="L104" href="#L104">104</a> }
<a class="jxr_linenumber" name="L105" href="#L105">105</a>
<a class="jxr_linenumber" name="L106" href="#L106">106</a> @Override
<a class="jxr_linenumber" name="L107" href="#L107">107</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">void</strong> append(<strong class="jxr_keyword">final</strong> <a href="../../../../../../../org/apache/logging/log4j/core/LogEvent.html">LogEvent</a> event) {
<a class="jxr_linenumber" name="L108" href="#L108">108</a> <strong class="jxr_keyword">this</strong>.readLock.lock();
<a class="jxr_linenumber" name="L109" href="#L109">109</a> <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="L110" href="#L110">110</a> <strong class="jxr_keyword">this</strong>.getManager().write(event, toSerializable(event));
<a class="jxr_linenumber" name="L111" href="#L111">111</a> } <strong class="jxr_keyword">catch</strong> (<strong class="jxr_keyword">final</strong> LoggingException e) {
<a class="jxr_linenumber" name="L112" href="#L112">112</a> LOGGER.error(<span class="jxr_string">"Unable to write to database [{}] for appender [{}]."</span>, <strong class="jxr_keyword">this</strong>.getManager().getName(),
<a class="jxr_linenumber" name="L113" href="#L113">113</a> <strong class="jxr_keyword">this</strong>.getName(), e);
<a class="jxr_linenumber" name="L114" href="#L114">114</a> <strong class="jxr_keyword">throw</strong> e;
<a class="jxr_linenumber" name="L115" href="#L115">115</a> } <strong class="jxr_keyword">catch</strong> (<strong class="jxr_keyword">final</strong> Exception e) {
<a class="jxr_linenumber" name="L116" href="#L116">116</a> LOGGER.error(<span class="jxr_string">"Unable to write to database [{}] for appender [{}]."</span>, <strong class="jxr_keyword">this</strong>.getManager().getName(),
<a class="jxr_linenumber" name="L117" href="#L117">117</a> <strong class="jxr_keyword">this</strong>.getName(), e);
<a class="jxr_linenumber" name="L118" href="#L118">118</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../../../org/apache/logging/log4j/core/appender/AppenderLoggingException.html">AppenderLoggingException</a>(<span class="jxr_string">"Unable to write to database in appender: "</span> + e.getMessage(), e);
<a class="jxr_linenumber" name="L119" href="#L119">119</a> } <strong class="jxr_keyword">finally</strong> {
<a class="jxr_linenumber" name="L120" href="#L120">120</a> <strong class="jxr_keyword">this</strong>.readLock.unlock();
<a class="jxr_linenumber" name="L121" href="#L121">121</a> }
<a class="jxr_linenumber" name="L122" href="#L122">122</a> }
<a class="jxr_linenumber" name="L123" href="#L123">123</a>
<a class="jxr_linenumber" name="L124" href="#L124">124</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L125" href="#L125">125</a> <em class="jxr_javadoccomment"> * This always returns {@code null}, as database appenders do not use a single layout. The JPA and NoSQL appenders</em>
<a class="jxr_linenumber" name="L126" href="#L126">126</a> <em class="jxr_javadoccomment"> * do not use a layout at all. The JDBC appender has a layout-per-column pattern.</em>
<a class="jxr_linenumber" name="L127" href="#L127">127</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="L128" href="#L128">128</a> <em class="jxr_javadoccomment"> * @return {@code null}.</em>
<a class="jxr_linenumber" name="L129" href="#L129">129</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L130" href="#L130">130</a> @Override
<a class="jxr_linenumber" name="L131" href="#L131">131</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> Layout&lt;LogEvent&gt; getLayout() {
<a class="jxr_linenumber" name="L132" href="#L132">132</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;
<a class="jxr_linenumber" name="L133" href="#L133">133</a> }
<a class="jxr_linenumber" name="L134" href="#L134">134</a>
<a class="jxr_linenumber" name="L135" href="#L135">135</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L136" href="#L136">136</a> <em class="jxr_javadoccomment"> * Returns the underlying manager in use within this appender.</em>
<a class="jxr_linenumber" name="L137" href="#L137">137</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="L138" href="#L138">138</a> <em class="jxr_javadoccomment"> * @return the manager.</em>
<a class="jxr_linenumber" name="L139" href="#L139">139</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L140" href="#L140">140</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> T getManager() {
<a class="jxr_linenumber" name="L141" href="#L141">141</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">this</strong>.manager;
<a class="jxr_linenumber" name="L142" href="#L142">142</a> }
<a class="jxr_linenumber" name="L143" href="#L143">143</a>
<a class="jxr_linenumber" name="L144" href="#L144">144</a> <em class="jxr_javadoccomment">/**</em>
<a class="jxr_linenumber" name="L145" href="#L145">145</a> <em class="jxr_javadoccomment"> * Replaces the underlying manager in use within this appender. This can be useful for manually changing the way log</em>
<a class="jxr_linenumber" name="L146" href="#L146">146</a> <em class="jxr_javadoccomment"> * events are written to the database without losing buffered or in-progress events. The existing manager is</em>
<a class="jxr_linenumber" name="L147" href="#L147">147</a> <em class="jxr_javadoccomment"> * released only after the new manager has been installed. This method is thread-safe.</em>
<a class="jxr_linenumber" name="L148" href="#L148">148</a> <em class="jxr_javadoccomment"> *</em>
<a class="jxr_linenumber" name="L149" href="#L149">149</a> <em class="jxr_javadoccomment"> * @param manager The new manager to install.</em>
<a class="jxr_linenumber" name="L150" href="#L150">150</a> <em class="jxr_javadoccomment"> */</em>
<a class="jxr_linenumber" name="L151" href="#L151">151</a> <strong class="jxr_keyword">protected</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">void</strong> replaceManager(<strong class="jxr_keyword">final</strong> T manager) {
<a class="jxr_linenumber" name="L152" href="#L152">152</a> <strong class="jxr_keyword">this</strong>.writeLock.lock();
<a class="jxr_linenumber" name="L153" href="#L153">153</a> <strong class="jxr_keyword">try</strong> {
<a class="jxr_linenumber" name="L154" href="#L154">154</a> <strong class="jxr_keyword">final</strong> T old = <strong class="jxr_keyword">this</strong>.getManager();
<a class="jxr_linenumber" name="L155" href="#L155">155</a> <strong class="jxr_keyword">if</strong> (!manager.isRunning()) {
<a class="jxr_linenumber" name="L156" href="#L156">156</a> manager.startup();
<a class="jxr_linenumber" name="L157" href="#L157">157</a> }
<a class="jxr_linenumber" name="L158" href="#L158">158</a> <strong class="jxr_keyword">this</strong>.manager = manager;
<a class="jxr_linenumber" name="L159" href="#L159">159</a> old.close();
<a class="jxr_linenumber" name="L160" href="#L160">160</a> } <strong class="jxr_keyword">finally</strong> {
<a class="jxr_linenumber" name="L161" href="#L161">161</a> <strong class="jxr_keyword">this</strong>.writeLock.unlock();
<a class="jxr_linenumber" name="L162" href="#L162">162</a> }
<a class="jxr_linenumber" name="L163" href="#L163">163</a> }
<a class="jxr_linenumber" name="L164" href="#L164">164</a>
<a class="jxr_linenumber" name="L165" href="#L165">165</a> @Override
<a class="jxr_linenumber" name="L166" href="#L166">166</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">void</strong> start() {
<a class="jxr_linenumber" name="L167" href="#L167">167</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.getManager() == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="L168" href="#L168">168</a> LOGGER.error(<span class="jxr_string">"No AbstractDatabaseManager set for the appender named [{}]."</span>, <strong class="jxr_keyword">this</strong>.getName());
<a class="jxr_linenumber" name="L169" href="#L169">169</a> }
<a class="jxr_linenumber" name="L170" href="#L170">170</a> <strong class="jxr_keyword">super</strong>.start();
<a class="jxr_linenumber" name="L171" href="#L171">171</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.getManager() != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="L172" href="#L172">172</a> <strong class="jxr_keyword">this</strong>.getManager().startup();
<a class="jxr_linenumber" name="L173" href="#L173">173</a> }
<a class="jxr_linenumber" name="L174" href="#L174">174</a> }
<a class="jxr_linenumber" name="L175" href="#L175">175</a>
<a class="jxr_linenumber" name="L176" href="#L176">176</a> @Override
<a class="jxr_linenumber" name="L177" href="#L177">177</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> stop(<strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong> timeout, <strong class="jxr_keyword">final</strong> TimeUnit timeUnit) {
<a class="jxr_linenumber" name="L178" href="#L178">178</a> setStopping();
<a class="jxr_linenumber" name="L179" href="#L179">179</a> <strong class="jxr_keyword">boolean</strong> stopped = <strong class="jxr_keyword">super</strong>.stop(timeout, timeUnit, false);
<a class="jxr_linenumber" name="L180" href="#L180">180</a> <strong class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.getManager() != <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="L181" href="#L181">181</a> stopped &amp;= <strong class="jxr_keyword">this</strong>.getManager().stop(timeout, timeUnit);
<a class="jxr_linenumber" name="L182" href="#L182">182</a> }
<a class="jxr_linenumber" name="L183" href="#L183">183</a> setStopped();
<a class="jxr_linenumber" name="L184" href="#L184">184</a> <strong class="jxr_keyword">return</strong> stopped;
<a class="jxr_linenumber" name="L185" href="#L185">185</a> }
<a class="jxr_linenumber" name="L186" href="#L186">186</a> }
</pre>
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