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<title>AsyncAppender (Apache Log4j Core 2.23.1 API)</title>
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<div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">org.apache.logging.log4j.core.appender</a></div>
<h1 title="Class AsyncAppender" class="title">Class AsyncAppender</h1>
</div>
<div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a>
<div class="inheritance"><a href="../AbstractLifeCycle.html" title="class in org.apache.logging.log4j.core">org.apache.logging.log4j.core.AbstractLifeCycle</a>
<div class="inheritance"><a href="../filter/AbstractFilterable.html" title="class in org.apache.logging.log4j.core.filter">org.apache.logging.log4j.core.filter.AbstractFilterable</a>
<div class="inheritance"><a href="AbstractAppender.html" title="class in org.apache.logging.log4j.core.appender">org.apache.logging.log4j.core.appender.AbstractAppender</a>
<div class="inheritance">org.apache.logging.log4j.core.appender.AsyncAppender</div>
</div>
</div>
</div>
</div>
<section class="class-description" id="class-description">
<dl class="notes">
<dt>All Implemented Interfaces:</dt>
<dd><code><a href="../Appender.html" title="interface in org.apache.logging.log4j.core">Appender</a></code>, <code><a href="../filter/Filterable.html" title="interface in org.apache.logging.log4j.core.filter">Filterable</a></code>, <code><a href="../impl/LocationAware.html" title="interface in org.apache.logging.log4j.core.impl">LocationAware</a></code>, <code><a href="../LifeCycle.html" title="interface in org.apache.logging.log4j.core">LifeCycle</a></code>, <code><a href="../LifeCycle2.html" title="interface in org.apache.logging.log4j.core">LifeCycle2</a></code></dd>
</dl>
<hr>
<div class="type-signature"><span class="annotations"><a href="../config/plugins/Plugin.html" title="annotation in org.apache.logging.log4j.core.config.plugins">@Plugin</a>(<a href="../config/plugins/Plugin.html#name()">name</a>="Async",
<a href="../config/plugins/Plugin.html#category()">category</a>="Core",
<a href="../config/plugins/Plugin.html#elementType()">elementType</a>="appender",
<a href="../config/plugins/Plugin.html#printObject()">printObject</a>=true)
</span><span class="modifiers">public final class </span><span class="element-name type-name-label">AsyncAppender</span>
<span class="extends-implements">extends <a href="AbstractAppender.html" title="class in org.apache.logging.log4j.core.appender">AbstractAppender</a></span></div>
<div class="block">Appends to one or more Appenders asynchronously. You can configure an AsyncAppender with one or more Appenders and an
Appender to append to if the queue is full. The AsyncAppender does not allow a filter to be specified on the Appender
references.</div>
</section>
<section class="summary">
<ul class="summary-list">
<!-- ======== NESTED CLASS SUMMARY ======== -->
<li>
<section class="nested-class-summary" id="nested-class-summary">
<h2>Nested Class Summary</h2>
<div class="caption"><span>Nested Classes</span></div>
<div class="summary-table three-column-summary">
<div class="table-header col-first">Modifier and Type</div>
<div class="table-header col-second">Class</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color"><code>static class&nbsp;</code></div>
<div class="col-second even-row-color"><code><a href="AsyncAppender.Builder.html" class="type-name-link" title="class in org.apache.logging.log4j.core.appender">AsyncAppender.Builder</a>&lt;<a href="AsyncAppender.Builder.html" title="type parameter in AsyncAppender.Builder">B</a> extends <a href="AsyncAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">AsyncAppender.Builder</a>&lt;<a href="AsyncAppender.Builder.html" title="type parameter in AsyncAppender.Builder">B</a>&gt;&gt;</code></div>
<div class="col-last even-row-color">&nbsp;</div>
</div>
<div class="inherited-list">
<h2 id="nested-classes-inherited-from-class-org.apache.logging.log4j.core.LifeCycle">Nested classes/interfaces inherited from interface&nbsp;org.apache.logging.log4j.core.<a href="../LifeCycle.html" title="interface in org.apache.logging.log4j.core">LifeCycle</a></h2>
<code><a href="../LifeCycle.State.html" title="enum in org.apache.logging.log4j.core">LifeCycle.State</a></code></div>
</section>
</li>
<!-- =========== FIELD SUMMARY =========== -->
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<section class="field-summary" id="field-summary">
<h2>Field Summary</h2>
<div class="inherited-list">
<h3 id="fields-inherited-from-class-org.apache.logging.log4j.core.AbstractLifeCycle">Fields inherited from class&nbsp;org.apache.logging.log4j.core.<a href="../AbstractLifeCycle.html" title="class in org.apache.logging.log4j.core">AbstractLifeCycle</a></h3>
<code><a href="../AbstractLifeCycle.html#DEFAULT_STOP_TIMEOUT">DEFAULT_STOP_TIMEOUT</a>, <a href="../AbstractLifeCycle.html#DEFAULT_STOP_TIMEUNIT">DEFAULT_STOP_TIMEUNIT</a>, <a href="../AbstractLifeCycle.html#LOGGER">LOGGER</a></code></div>
<div class="inherited-list">
<h3 id="fields-inherited-from-class-org.apache.logging.log4j.core.Appender">Fields inherited from interface&nbsp;org.apache.logging.log4j.core.<a href="../Appender.html" title="interface in org.apache.logging.log4j.core">Appender</a></h3>
<code><a href="../Appender.html#ELEMENT_TYPE">ELEMENT_TYPE</a>, <a href="../Appender.html#EMPTY_ARRAY">EMPTY_ARRAY</a></code></div>
</section>
</li>
<!-- ========== METHOD SUMMARY =========== -->
<li>
<section class="method-summary" id="method-summary">
<h2>Method Summary</h2>
<div id="method-summary-table">
<div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab1" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab1', 3)" class="table-tab">Static Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button><button id="method-summary-table-tab6" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab6', 3)" class="table-tab">Deprecated Methods</button></div>
<div id="method-summary-table.tabpanel" role="tabpanel">
<div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0">
<div class="table-header col-first">Modifier and Type</div>
<div class="table-header col-second">Method</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#append(org.apache.logging.log4j.core.LogEvent)" class="member-name-link">append</a><wbr>(<a href="../LogEvent.html" title="interface in org.apache.logging.log4j.core">LogEvent</a>&nbsp;logEvent)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Actual writing occurs here.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4 method-summary-table-tab6"><code>static <a href="AsyncAppender.html" title="class in org.apache.logging.log4j.core.appender">AsyncAppender</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4 method-summary-table-tab6"><code><a href="#createAppender(org.apache.logging.log4j.core.config.AppenderRef%5B%5D,java.lang.String,boolean,long,int,java.lang.String,boolean,org.apache.logging.log4j.core.Filter,org.apache.logging.log4j.core.config.Configuration,boolean)" class="member-name-link">createAppender</a><wbr>(<a href="../config/AppenderRef.html" title="class in org.apache.logging.log4j.core.config">AppenderRef</a>[]&nbsp;appenderRefs,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;errorRef,
boolean&nbsp;blocking,
long&nbsp;shutdownTimeout,
int&nbsp;size,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;name,
boolean&nbsp;includeLocation,
<a href="../Filter.html" title="interface in org.apache.logging.log4j.core">Filter</a>&nbsp;filter,
<a href="../config/Configuration.html" title="interface in org.apache.logging.log4j.core.config">Configuration</a>&nbsp;config,
boolean&nbsp;ignoreExceptions)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4 method-summary-table-tab6">
<div class="block"><span class="deprecated-label">Deprecated.</span>
<div class="deprecation-comment">use <a href="AsyncAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender"><code>AsyncAppender.Builder</code></a> instead</div>
</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>[]</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getAppenderRefStrings()" class="member-name-link">getAppenderRefStrings</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Returns the names of the appenders that this asyncAppender delegates to as an array of Strings.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../Appender.html" title="interface in org.apache.logging.log4j.core">Appender</a>&gt;</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getAppenders()" class="member-name-link">getAppenders</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Gets all Appenders.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getErrorRef()" class="member-name-link">getErrorRef</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Returns the name of the appender that any errors are logged to or <code>null</code>.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>int</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getQueueCapacity()" class="member-name-link">getQueueCapacity</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>int</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getQueueRemainingCapacity()" class="member-name-link">getQueueRemainingCapacity</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>int</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getQueueSize()" class="member-name-link">getQueueSize</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Returns the number of elements in the queue.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#isBlocking()" class="member-name-link">isBlocking</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Returns <code>true</code> if this AsyncAppender will block when the queue is full, or <code>false</code> if events are
dropped when the queue is full.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#isIncludeLocation()" class="member-name-link">isIncludeLocation</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Returns <code>true</code> if this AsyncAppender will take a snapshot of the stack with every log event to determine
the class and method where the logging call was made.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#logMessageInBackgroundThread(org.apache.logging.log4j.core.LogEvent)" class="member-name-link">logMessageInBackgroundThread</a><wbr>(<a href="../LogEvent.html" title="interface in org.apache.logging.log4j.core">LogEvent</a>&nbsp;logEvent)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">FOR INTERNAL USE ONLY.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#logMessageInCurrentThread(org.apache.logging.log4j.core.LogEvent)" class="member-name-link">logMessageInCurrentThread</a><wbr>(<a href="../LogEvent.html" title="interface in org.apache.logging.log4j.core">LogEvent</a>&nbsp;logEvent)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">FOR INTERNAL USE ONLY.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="AsyncAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">AsyncAppender.Builder</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#newBuilder()" class="member-name-link">newBuilder</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">&nbsp;</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#start()" class="member-name-link">start</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Make the Filter available for use.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#stop(long,java.util.concurrent.TimeUnit)" class="member-name-link">stop</a><wbr>(long&nbsp;timeout,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/TimeUnit.html" title="class or interface in java.util.concurrent" class="external-link">TimeUnit</a>&nbsp;timeUnit)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Cleanup the Filter.</div>
</div>
</div>
</div>
</div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-org.apache.logging.log4j.core.appender.AbstractAppender">Methods inherited from class&nbsp;org.apache.logging.log4j.core.appender.<a href="AbstractAppender.html" title="class in org.apache.logging.log4j.core.appender">AbstractAppender</a></h3>
<code><a href="AbstractAppender.html#error(java.lang.String)">error</a>, <a href="AbstractAppender.html#error(java.lang.String,java.lang.Throwable)">error</a>, <a href="AbstractAppender.html#error(java.lang.String,org.apache.logging.log4j.core.LogEvent,java.lang.Throwable)">error</a>, <a href="AbstractAppender.html#getHandler()">getHandler</a>, <a href="AbstractAppender.html#getLayout()">getLayout</a>, <a href="AbstractAppender.html#getName()">getName</a>, <a href="AbstractAppender.html#ignoreExceptions()">ignoreExceptions</a>, <a href="AbstractAppender.html#parseInt(java.lang.String,int)">parseInt</a>, <a href="AbstractAppender.html#requiresLocation()">requiresLocation</a>, <a href="AbstractAppender.html#setHandler(org.apache.logging.log4j.core.ErrorHandler)">setHandler</a>, <a href="AbstractAppender.html#toSerializable(org.apache.logging.log4j.core.LogEvent)">toSerializable</a>, <a href="AbstractAppender.html#toString()">toString</a></code></div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-org.apache.logging.log4j.core.filter.AbstractFilterable">Methods inherited from class&nbsp;org.apache.logging.log4j.core.filter.<a href="../filter/AbstractFilterable.html" title="class in org.apache.logging.log4j.core.filter">AbstractFilterable</a></h3>
<code><a href="../filter/AbstractFilterable.html#addFilter(org.apache.logging.log4j.core.Filter)">addFilter</a>, <a href="../filter/AbstractFilterable.html#getFilter()">getFilter</a>, <a href="../filter/AbstractFilterable.html#getPropertyArray()">getPropertyArray</a>, <a href="../filter/AbstractFilterable.html#hasFilter()">hasFilter</a>, <a href="../filter/AbstractFilterable.html#isFiltered(org.apache.logging.log4j.core.LogEvent)">isFiltered</a>, <a href="../filter/AbstractFilterable.html#removeFilter(org.apache.logging.log4j.core.Filter)">removeFilter</a>, <a href="../filter/AbstractFilterable.html#stop(long,java.util.concurrent.TimeUnit,boolean)">stop</a></code></div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-org.apache.logging.log4j.core.AbstractLifeCycle">Methods inherited from class&nbsp;org.apache.logging.log4j.core.<a href="../AbstractLifeCycle.html" title="class in org.apache.logging.log4j.core">AbstractLifeCycle</a></h3>
<code><a href="../AbstractLifeCycle.html#equalsImpl(java.lang.Object)">equalsImpl</a>, <a href="../AbstractLifeCycle.html#getState()">getState</a>, <a href="../AbstractLifeCycle.html#getStatusLogger()">getStatusLogger</a>, <a href="../AbstractLifeCycle.html#hashCodeImpl()">hashCodeImpl</a>, <a href="../AbstractLifeCycle.html#initialize()">initialize</a>, <a href="../AbstractLifeCycle.html#isInitialized()">isInitialized</a>, <a href="../AbstractLifeCycle.html#isStarted()">isStarted</a>, <a href="../AbstractLifeCycle.html#isStarting()">isStarting</a>, <a href="../AbstractLifeCycle.html#isStopped()">isStopped</a>, <a href="../AbstractLifeCycle.html#isStopping()">isStopping</a>, <a href="../AbstractLifeCycle.html#setStarted()">setStarted</a>, <a href="../AbstractLifeCycle.html#setStarting()">setStarting</a>, <a href="../AbstractLifeCycle.html#setState(org.apache.logging.log4j.core.LifeCycle.State)">setState</a>, <a href="../AbstractLifeCycle.html#setStopped()">setStopped</a>, <a href="../AbstractLifeCycle.html#setStopping()">setStopping</a>, <a href="../AbstractLifeCycle.html#stop()">stop</a>, <a href="../AbstractLifeCycle.html#stop(java.util.concurrent.Future)">stop</a></code></div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#clone--" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#finalize--" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#getClass--" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notify--" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notifyAll--" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-" title="class or interface in java.lang" class="external-link">wait</a></code></div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-org.apache.logging.log4j.core.LifeCycle">Methods inherited from interface&nbsp;org.apache.logging.log4j.core.<a href="../LifeCycle.html" title="interface in org.apache.logging.log4j.core">LifeCycle</a></h3>
<code><a href="../LifeCycle.html#getState()">getState</a>, <a href="../LifeCycle.html#initialize()">initialize</a>, <a href="../LifeCycle.html#isStarted()">isStarted</a>, <a href="../LifeCycle.html#isStopped()">isStopped</a>, <a href="../LifeCycle.html#stop()">stop</a></code></div>
</section>
</li>
</ul>
</section>
<section class="details">
<ul class="details-list">
<!-- ============ METHOD DETAIL ========== -->
<li>
<section class="method-details" id="method-detail">
<h2>Method Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="start()">
<h3>start</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">start</span>()</div>
<div class="block"><span class="descfrm-type-label">Description copied from class:&nbsp;<code><a href="../filter/AbstractFilterable.html#start()">AbstractFilterable</a></code></span></div>
<div class="block">Make the Filter available for use.</div>
<dl class="notes">
<dt>Specified by:</dt>
<dd><code><a href="../LifeCycle.html#start()">start</a></code>&nbsp;in interface&nbsp;<code><a href="../LifeCycle.html" title="interface in org.apache.logging.log4j.core">LifeCycle</a></code></dd>
<dt>Overrides:</dt>
<dd><code><a href="../filter/AbstractFilterable.html#start()">start</a></code>&nbsp;in class&nbsp;<code><a href="../filter/AbstractFilterable.html" title="class in org.apache.logging.log4j.core.filter">AbstractFilterable</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="stop(long,java.util.concurrent.TimeUnit)">
<h3>stop</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">stop</span><wbr><span class="parameters">(long&nbsp;timeout,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/TimeUnit.html" title="class or interface in java.util.concurrent" class="external-link">TimeUnit</a>&nbsp;timeUnit)</span></div>
<div class="block"><span class="descfrm-type-label">Description copied from class:&nbsp;<code><a href="../filter/AbstractFilterable.html#stop(long,java.util.concurrent.TimeUnit)">AbstractFilterable</a></code></span></div>
<div class="block">Cleanup the Filter.</div>
<dl class="notes">
<dt>Specified by:</dt>
<dd><code><a href="../LifeCycle2.html#stop(long,java.util.concurrent.TimeUnit)">stop</a></code>&nbsp;in interface&nbsp;<code><a href="../LifeCycle2.html" title="interface in org.apache.logging.log4j.core">LifeCycle2</a></code></dd>
<dt>Overrides:</dt>
<dd><code><a href="../filter/AbstractFilterable.html#stop(long,java.util.concurrent.TimeUnit)">stop</a></code>&nbsp;in class&nbsp;<code><a href="../filter/AbstractFilterable.html" title="class in org.apache.logging.log4j.core.filter">AbstractFilterable</a></code></dd>
<dt>Parameters:</dt>
<dd><code>timeout</code> - the maximum time to wait</dd>
<dd><code>timeUnit</code> - the time unit of the timeout argument</dd>
<dt>Returns:</dt>
<dd>true if the receiver was stopped cleanly and normally, false otherwise.</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="append(org.apache.logging.log4j.core.LogEvent)">
<h3>append</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">append</span><wbr><span class="parameters">(<a href="../LogEvent.html" title="interface in org.apache.logging.log4j.core">LogEvent</a>&nbsp;logEvent)</span></div>
<div class="block">Actual writing occurs here.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>logEvent</code> - The LogEvent.</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="logMessageInCurrentThread(org.apache.logging.log4j.core.LogEvent)">
<h3>logMessageInCurrentThread</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">logMessageInCurrentThread</span><wbr><span class="parameters">(<a href="../LogEvent.html" title="interface in org.apache.logging.log4j.core">LogEvent</a>&nbsp;logEvent)</span></div>
<div class="block">FOR INTERNAL USE ONLY.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>logEvent</code> - the event to log</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="logMessageInBackgroundThread(org.apache.logging.log4j.core.LogEvent)">
<h3>logMessageInBackgroundThread</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">logMessageInBackgroundThread</span><wbr><span class="parameters">(<a href="../LogEvent.html" title="interface in org.apache.logging.log4j.core">LogEvent</a>&nbsp;logEvent)</span></div>
<div class="block">FOR INTERNAL USE ONLY.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>logEvent</code> - the event to log</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="createAppender(org.apache.logging.log4j.core.config.AppenderRef[],java.lang.String,boolean,long,int,java.lang.String,boolean,org.apache.logging.log4j.core.Filter,org.apache.logging.log4j.core.config.Configuration,boolean)">
<h3>createAppender</h3>
<div class="member-signature"><span class="annotations"><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html" title="class or interface in java.lang" class="external-link">@Deprecated</a>
</span><span class="modifiers">public static</span>&nbsp;<span class="return-type"><a href="AsyncAppender.html" title="class in org.apache.logging.log4j.core.appender">AsyncAppender</a></span>&nbsp;<span class="element-name">createAppender</span><wbr><span class="parameters">(<a href="../config/AppenderRef.html" title="class in org.apache.logging.log4j.core.config">AppenderRef</a>[]&nbsp;appenderRefs,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;errorRef,
boolean&nbsp;blocking,
long&nbsp;shutdownTimeout,
int&nbsp;size,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;name,
boolean&nbsp;includeLocation,
<a href="../Filter.html" title="interface in org.apache.logging.log4j.core">Filter</a>&nbsp;filter,
<a href="../config/Configuration.html" title="interface in org.apache.logging.log4j.core.config">Configuration</a>&nbsp;config,
boolean&nbsp;ignoreExceptions)</span></div>
<div class="deprecation-block"><span class="deprecated-label">Deprecated.</span>
<div class="deprecation-comment">use <a href="AsyncAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender"><code>AsyncAppender.Builder</code></a> instead</div>
</div>
<div class="block">Create an AsyncAppender. This method is retained for backwards compatibility. New code should use the
<a href="AsyncAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender"><code>AsyncAppender.Builder</code></a> instead. This factory will use <a href="../async/ArrayBlockingQueueFactory.html" title="class in org.apache.logging.log4j.core.async"><code>ArrayBlockingQueueFactory</code></a> by default as was the behavior
pre-2.7.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>appenderRefs</code> - The Appenders to reference.</dd>
<dd><code>errorRef</code> - An optional Appender to write to if the queue is full or other errors occur.</dd>
<dd><code>blocking</code> - True if the Appender should wait when the queue is full. The default is true.</dd>
<dd><code>shutdownTimeout</code> - How many milliseconds the Appender should wait to flush outstanding log events
in the queue on shutdown. The default is zero which means to wait forever.</dd>
<dd><code>size</code> - The size of the event queue. The default is 128.</dd>
<dd><code>name</code> - The name of the Appender.</dd>
<dd><code>includeLocation</code> - whether to include location information. The default is false.</dd>
<dd><code>filter</code> - The Filter or null.</dd>
<dd><code>config</code> - The Configuration.</dd>
<dd><code>ignoreExceptions</code> - If <code>"true"</code> (default) exceptions encountered when appending events are logged;
otherwise they are propagated to the caller.</dd>
<dt>Returns:</dt>
<dd>The AsyncAppender.</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="newBuilder()">
<h3>newBuilder</h3>
<div class="member-signature"><span class="annotations"><a href="../config/plugins/PluginBuilderFactory.html" title="annotation in org.apache.logging.log4j.core.config.plugins">@PluginBuilderFactory</a>
</span><span class="modifiers">public static</span>&nbsp;<span class="return-type"><a href="AsyncAppender.Builder.html" title="class in org.apache.logging.log4j.core.appender">AsyncAppender.Builder</a></span>&nbsp;<span class="element-name">newBuilder</span>()</div>
</section>
</li>
<li>
<section class="detail" id="getAppenderRefStrings()">
<h3>getAppenderRefStrings</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>[]</span>&nbsp;<span class="element-name">getAppenderRefStrings</span>()</div>
<div class="block">Returns the names of the appenders that this asyncAppender delegates to as an array of Strings.</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>the names of the sink appenders</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="isIncludeLocation()">
<h3>isIncludeLocation</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">isIncludeLocation</span>()</div>
<div class="block">Returns <code>true</code> if this AsyncAppender will take a snapshot of the stack with every log event to determine
the class and method where the logging call was made.</div>
<dl class="notes">
<dt>Returns:</dt>
<dd><code>true</code> if location is included with every event, <code>false</code> otherwise</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="isBlocking()">
<h3>isBlocking</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">isBlocking</span>()</div>
<div class="block">Returns <code>true</code> if this AsyncAppender will block when the queue is full, or <code>false</code> if events are
dropped when the queue is full.</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>whether this AsyncAppender will block or drop events when the queue is full.</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="getAppenders()">
<h3>getAppenders</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../Appender.html" title="interface in org.apache.logging.log4j.core">Appender</a>&gt;</span>&nbsp;<span class="element-name">getAppenders</span>()</div>
<div class="block">Gets all Appenders.</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>a list of Appenders.</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="getErrorRef()">
<h3>getErrorRef</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></span>&nbsp;<span class="element-name">getErrorRef</span>()</div>
<div class="block">Returns the name of the appender that any errors are logged to or <code>null</code>.</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>the name of the appender that any errors are logged to or <code>null</code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="getQueueCapacity()">
<h3>getQueueCapacity</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">getQueueCapacity</span>()</div>
</section>
</li>
<li>
<section class="detail" id="getQueueRemainingCapacity()">
<h3>getQueueRemainingCapacity</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">getQueueRemainingCapacity</span>()</div>
</section>
</li>
<li>
<section class="detail" id="getQueueSize()">
<h3>getQueueSize</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">getQueueSize</span>()</div>
<div class="block">Returns the number of elements in the queue.</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>the number of elements in the queue.</dd>
<dt>Since:</dt>
<dd>2.11.1</dd>
</dl>
</section>
</li>
</ul>
</section>
</li>
</ul>
</section>
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