| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <!-- NewPage --> |
| <html lang="en"> |
| <head> |
| <!-- Generated by javadoc (1.8.0_144) on Sat Apr 25 12:11:41 MST 2020 --> |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> |
| <title>AsyncQueueFullPolicy (Apache Log4j Core 2.13.2 API)</title> |
| <meta name="date" content="2020-04-25"> |
| <link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style"> |
| <script type="text/javascript" src="../../../../../../script.js"></script> |
| </head> |
| <body> |
| <script type="text/javascript"><!-- |
| try { |
| if (location.href.indexOf('is-external=true') == -1) { |
| parent.document.title="AsyncQueueFullPolicy (Apache Log4j Core 2.13.2 API)"; |
| } |
| } |
| catch(err) { |
| } |
| //--> |
| var methods = {"i0":6}; |
| var tabs = {65535:["t0","All Methods"],2:["t2","Instance Methods"],4:["t3","Abstract Methods"]}; |
| var altColor = "altColor"; |
| var rowColor = "rowColor"; |
| var tableTab = "tableTab"; |
| var activeTableTab = "activeTableTab"; |
| </script> |
| <noscript> |
| <div>JavaScript is disabled on your browser.</div> |
| </noscript> |
| <!-- ========= START OF TOP NAVBAR ======= --> |
| <div class="topNav"><a name="navbar.top"> |
| <!-- --> |
| </a> |
| <div class="skipNav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div> |
| <a name="navbar.top.firstrow"> |
| <!-- --> |
| </a> |
| <ul class="navList" title="Navigation"> |
| <li><a href="../../../../../../overview-summary.html">Overview</a></li> |
| <li><a href="package-summary.html">Package</a></li> |
| <li class="navBarCell1Rev">Class</li> |
| <li><a href="class-use/AsyncQueueFullPolicy.html">Use</a></li> |
| <li><a href="package-tree.html">Tree</a></li> |
| <li><a href="../../../../../../deprecated-list.html">Deprecated</a></li> |
| <li><a href="../../../../../../index-all.html">Index</a></li> |
| <li><a href="../../../../../../help-doc.html">Help</a></li> |
| </ul> |
| </div> |
| <div class="subNav"> |
| <ul class="navList"> |
| <li><a href="../../../../../../org/apache/logging/log4j/core/async/AsyncQueueFullMessageUtil.html" title="class in org.apache.logging.log4j.core.async"><span class="typeNameLink">Prev Class</span></a></li> |
| <li><a href="../../../../../../org/apache/logging/log4j/core/async/AsyncQueueFullPolicyFactory.html" title="class in org.apache.logging.log4j.core.async"><span class="typeNameLink">Next Class</span></a></li> |
| </ul> |
| <ul class="navList"> |
| <li><a href="../../../../../../index.html?org/apache/logging/log4j/core/async/AsyncQueueFullPolicy.html" target="_top">Frames</a></li> |
| <li><a href="AsyncQueueFullPolicy.html" target="_top">No Frames</a></li> |
| </ul> |
| <ul class="navList" id="allclasses_navbar_top"> |
| <li><a href="../../../../../../allclasses-noframe.html">All Classes</a></li> |
| </ul> |
| <div> |
| <script type="text/javascript"><!-- |
| allClassesLink = document.getElementById("allclasses_navbar_top"); |
| if(window==top) { |
| allClassesLink.style.display = "block"; |
| } |
| else { |
| allClassesLink.style.display = "none"; |
| } |
| //--> |
| </script> |
| </div> |
| <div> |
| <ul class="subNavList"> |
| <li>Summary: </li> |
| <li>Nested | </li> |
| <li>Field | </li> |
| <li>Constr | </li> |
| <li><a href="#method.summary">Method</a></li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li>Field | </li> |
| <li>Constr | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <a name="skip.navbar.top"> |
| <!-- --> |
| </a></div> |
| <!-- ========= END OF TOP NAVBAR ========= --> |
| <!-- ======== START OF CLASS DATA ======== --> |
| <div class="header"> |
| <div class="subTitle">org.apache.logging.log4j.core.async</div> |
| <h2 title="Interface AsyncQueueFullPolicy" class="title">Interface AsyncQueueFullPolicy</h2> |
| </div> |
| <div class="contentContainer"> |
| <div class="description"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <dl> |
| <dt>All Known Implementing Classes:</dt> |
| <dd><a href="../../../../../../org/apache/logging/log4j/core/async/DefaultAsyncQueueFullPolicy.html" title="class in org.apache.logging.log4j.core.async">DefaultAsyncQueueFullPolicy</a>, <a href="../../../../../../org/apache/logging/log4j/core/async/DiscardingAsyncQueueFullPolicy.html" title="class in org.apache.logging.log4j.core.async">DiscardingAsyncQueueFullPolicy</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public interface <a href="../../../../../../src-html/org/apache/logging/log4j/core/async/AsyncQueueFullPolicy.html#line.50">AsyncQueueFullPolicy</a></pre> |
| <div class="block">Policy for deciding whether to discard the event, enqueue it or log the event on the current thread when the queue |
| is full. |
| <p> |
| The asynchronous logging queue may become full when the application is logging faster than the underlying appender |
| can keep up with for a long enough time to fill up the bounded queue. When this happens, the logging subsystem has to |
| choose what to do with the event: |
| </p> |
| <ul> |
| <li>Enqueue the event. This will block until the background thread removes a log event from the queue and space for |
| new events becomes available in the queue. There is a risk of causing deadlock here when the new logging call was |
| made while processing another logging call, for example when Log4j calls <code>toString()</code> on a message |
| parameter, and the parameter object makes a logging call from its <code>toString()</code> method.</li> |
| <li>Bypass the queue and send the event directly to the underlying appenders. This is the default policy used by |
| Log4j since 2.7: see <a href="../../../../../../org/apache/logging/log4j/core/async/DefaultAsyncQueueFullPolicy.html" title="class in org.apache.logging.log4j.core.async"><code>DefaultAsyncQueueFullPolicy</code></a>. The benefit of this approach is that |
| events will not get lost, but the disadvantage is that the resulting log file will be confusing for users, |
| since log events will appear in the log file in random order: new events that are directly logged are followed |
| by older log events taken from the queue.</li> |
| <li>Discard the event. Log4j offers a variation of this policy where log events that are more verbose than |
| a certain threshold are discarded, and other events are sent to the underlying appenders. |
| See <a href="../../../../../../org/apache/logging/log4j/core/async/DiscardingAsyncQueueFullPolicy.html" title="class in org.apache.logging.log4j.core.async"><code>DiscardingAsyncQueueFullPolicy</code></a> for details.</li> |
| </ul> |
| <p> |
| See <a href="../../../../../../org/apache/logging/log4j/core/async/AsyncQueueFullPolicyFactory.html" title="class in org.apache.logging.log4j.core.async"><code>AsyncQueueFullPolicyFactory</code></a> for how to install a custom policy. |
| </p></div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>2.6</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../org/apache/logging/log4j/core/async/AsyncQueueFullPolicyFactory.html" title="class in org.apache.logging.log4j.core.async"><code>AsyncQueueFullPolicyFactory</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.summary"> |
| <!-- --> |
| </a> |
| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../org/apache/logging/log4j/core/async/EventRoute.html" title="enum in org.apache.logging.log4j.core.async">EventRoute</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/logging/log4j/core/async/AsyncQueueFullPolicy.html#getRoute-long-org.apache.logging.log4j.Level-">getRoute</a></span>(long backgroundThreadId, |
| org.apache.logging.log4j.Level level)</code> |
| <div class="block">Returns the appropriate route for the current log event, given the specified parameters.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a name="getRoute-long-org.apache.logging.log4j.Level-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>getRoute</h4> |
| <pre><a href="../../../../../../org/apache/logging/log4j/core/async/EventRoute.html" title="enum in org.apache.logging.log4j.core.async">EventRoute</a> <a href="../../../../../../src-html/org/apache/logging/log4j/core/async/AsyncQueueFullPolicy.html#line.59">getRoute</a>(long backgroundThreadId, |
| org.apache.logging.log4j.Level level)</pre> |
| <div class="block">Returns the appropriate route for the current log event, given the specified parameters.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>backgroundThreadId</code> - the thread ID of the background thread. Can be compared with the current thread's ID.</dd> |
| <dd><code>level</code> - the level of the log event</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the appropriate route for the current event</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| </div> |
| <!-- ========= END OF CLASS DATA ========= --> |
| <!-- ======= START OF BOTTOM NAVBAR ====== --> |
| <div class="bottomNav"><a name="navbar.bottom"> |
| <!-- --> |
| </a> |
| <div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div> |
| <a name="navbar.bottom.firstrow"> |
| <!-- --> |
| </a> |
| <ul class="navList" title="Navigation"> |
| <li><a href="../../../../../../overview-summary.html">Overview</a></li> |
| <li><a href="package-summary.html">Package</a></li> |
| <li class="navBarCell1Rev">Class</li> |
| <li><a href="class-use/AsyncQueueFullPolicy.html">Use</a></li> |
| <li><a href="package-tree.html">Tree</a></li> |
| <li><a href="../../../../../../deprecated-list.html">Deprecated</a></li> |
| <li><a href="../../../../../../index-all.html">Index</a></li> |
| <li><a href="../../../../../../help-doc.html">Help</a></li> |
| </ul> |
| </div> |
| <div class="subNav"> |
| <ul class="navList"> |
| <li><a href="../../../../../../org/apache/logging/log4j/core/async/AsyncQueueFullMessageUtil.html" title="class in org.apache.logging.log4j.core.async"><span class="typeNameLink">Prev Class</span></a></li> |
| <li><a href="../../../../../../org/apache/logging/log4j/core/async/AsyncQueueFullPolicyFactory.html" title="class in org.apache.logging.log4j.core.async"><span class="typeNameLink">Next Class</span></a></li> |
| </ul> |
| <ul class="navList"> |
| <li><a href="../../../../../../index.html?org/apache/logging/log4j/core/async/AsyncQueueFullPolicy.html" target="_top">Frames</a></li> |
| <li><a href="AsyncQueueFullPolicy.html" target="_top">No Frames</a></li> |
| </ul> |
| <ul class="navList" id="allclasses_navbar_bottom"> |
| <li><a href="../../../../../../allclasses-noframe.html">All Classes</a></li> |
| </ul> |
| <div> |
| <script type="text/javascript"><!-- |
| allClassesLink = document.getElementById("allclasses_navbar_bottom"); |
| if(window==top) { |
| allClassesLink.style.display = "block"; |
| } |
| else { |
| allClassesLink.style.display = "none"; |
| } |
| //--> |
| </script> |
| </div> |
| <div> |
| <ul class="subNavList"> |
| <li>Summary: </li> |
| <li>Nested | </li> |
| <li>Field | </li> |
| <li>Constr | </li> |
| <li><a href="#method.summary">Method</a></li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li>Field | </li> |
| <li>Constr | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <a name="skip.navbar.bottom"> |
| <!-- --> |
| </a></div> |
| <!-- ======== END OF BOTTOM NAVBAR ======= --> |
| <p class="legalCopy"><small><p align="center">Copyright © 1999-2020 <a href="https://www.apache.org/">The Apache Software Foundation</a>. All Rights Reserved.<br /> Apache Logging, Apache Log4j, Log4j, Apache, the Apache feather logo, the Apache Logging project logo, and the Apache Log4j logo are trademarks of The Apache Software Foundation.</p></small></p> |
| </body> |
| </html> |
