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<title>The MongoDB\Driver\Monitoring\CommandSubscriber interface</title>
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<h1 class="title">The MongoDB\Driver\Monitoring\CommandSubscriber interface</h1>
<div class="partintro"><p class="verinfo">(mongodb >=1.3.0)</p>
<div class="section" id="mongodb-driver-monitoring-commandsubscriber.intro">
<h2 class="title">Introduction</h2>
<p class="para">
Classes may implement this interface to register an event subscriber that is
notified for each started, successful, and failed command event. See
<a href="mongodb.tutorial.apm.html" class="xref">Application Performance Monitoring (APM)</a> for additional information.
</p>
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<div class="section" id="mongodb-driver-monitoring-commandsubscriber.synopsis">
<h2 class="title">Interface synopsis</h2>
<div class="classsynopsis">
<div class="ooclass"></div>
<div class="classsynopsisinfo">
<span class="ooclass">
<strong class="classname">MongoDB\Driver\Monitoring\CommandSubscriber</strong>
</span>
<span class="oointerface">implements
<span class="interfacename"><a href="class.mongodb-driver-monitoring-subscriber.html" class="interfacename">MongoDB\Driver\Monitoring\Subscriber</a></span>
</span>
{</div>
<div class="classsynopsisinfo classsynopsisinfo_comment">/* Methods */</div>
<div class="methodsynopsis dc-description">
<span class="modifier">abstract</span> <span class="modifier">public</span> <span class="type">void</span> <span class="methodname"><a href="mongodb-driver-monitoring-commandsubscriber.commandfailed.html" class="methodname">commandFailed</a></span>
( <span class="methodparam"><span class="type"><span class="type MongoDB\Driver\Monitoring\CommandFailedEvent">MongoDB\Driver\Monitoring\CommandFailedEvent</span></span> <code class="parameter">$event</code></span>
)</div>
<div class="methodsynopsis dc-description">
<span class="modifier">abstract</span> <span class="modifier">public</span> <span class="type">void</span> <span class="methodname"><a href="mongodb-driver-monitoring-commandsubscriber.commandstarted.html" class="methodname">commandStarted</a></span>
( <span class="methodparam"><span class="type"><span class="type MongoDB\Driver\Monitoring\CommandStartedEvent">MongoDB\Driver\Monitoring\CommandStartedEvent</span></span> <code class="parameter">$event</code></span>
)</div>
<div class="methodsynopsis dc-description">
<span class="modifier">abstract</span> <span class="modifier">public</span> <span class="type">void</span> <span class="methodname"><a href="mongodb-driver-monitoring-commandsubscriber.commandsucceeded.html" class="methodname">commandSucceeded</a></span>
( <span class="methodparam"><span class="type"><span class="type MongoDB\Driver\Monitoring\CommandSucceededEvent">MongoDB\Driver\Monitoring\CommandSucceededEvent</span></span> <code class="parameter">$event</code></span>
)</div>
}</div>
</div>
</div>
<h2>Table of Contents</h2><ul class="chunklist chunklist_reference"><li><a href="mongodb-driver-monitoring-commandsubscriber.commandfailed.html">MongoDB\Driver\Monitoring\CommandSubscriber::commandFailed</a> — Notification method for a failed command</li><li><a href="mongodb-driver-monitoring-commandsubscriber.commandstarted.html">MongoDB\Driver\Monitoring\CommandSubscriber::commandStarted</a> — Notification method for a started command</li><li><a href="mongodb-driver-monitoring-commandsubscriber.commandsucceeded.html">MongoDB\Driver\Monitoring\CommandSubscriber::commandSucceeded</a> — Notification method for a successful command</li></ul>
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