observer.php
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observer.php
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	<?php
	use MongoDB\Driver\Monitoring\CommandFailedEvent;
	use MongoDB\Driver\Monitoring\CommandStartedEvent;
	use MongoDB\Driver\Monitoring\CommandSucceededEvent;
	use MongoDB\Driver\Monitoring\CommandSubscriber;
	/**
	* Observes command documents using the driver's monitoring API.
	*/
	class CommandObserver implements CommandSubscriber
	{
	private $commands = [];
	public function observe(callable $execution, callable $commandCallback)
	{
	$this->commands = [];
	\MongoDB\Driver\Monitoring\addSubscriber($this);
	try {
	call_user_func($execution);
	} finally {
	\MongoDB\Driver\Monitoring\removeSubscriber($this);
	foreach ($this->commands as $command) {
	call_user_func($commandCallback, $command);
	}
	}
	}
	public function commandStarted(CommandStartedEvent $event): void
	{
	$this->commands[] = $event->getCommand();
	}
	public function commandSucceeded(CommandSucceededEvent $event): void
	{
	}
	public function commandFailed(CommandFailedEvent $event): void
	{
	}
	}
	?>