Integration.php
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Integration.php
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	<?php

	namespace MediaWiki\Extension\EventLogging\MetricsPlatform;

	use MediaWiki\Context\IContextSource;
	use Wikimedia\MetricsPlatform\Integration as MetricsPlatformIntegration;

	/**
	* Provides the following functionality for the Metrics Platform Client:
	*
	* 1. Sending events to a remote service via EventBus; and
	* 2. Gets the values of various context attributes from the execution environment
	*
	* Note well that #2 is done lazily, during the first call to `Integration#getContextAttribute()`
	* and not at construction time, which keeps the cost of instantiating `Integration` instances low.
	*
	* @internal
	*/
	class Integration implements MetricsPlatformIntegration {

	/**
	* @var ContextAttributesFactory
	*/
	private $contextAttributesFactory;

	/**
	* @var IContextSource
	*/
	private $contextSource;

	/**
	* @var array
	*/
	private $contextAttributes;

	public function __construct(
	ContextAttributesFactory $contextAttributesFactory,
	IContextSource $contextSource
	) {
	$this->contextAttributesFactory = $contextAttributesFactory;
	$this->contextSource = $contextSource;
	}

	/** @inheritDoc */
	public function getContextAttribute( string $name ) {
	$contextAttributes =
	$this->contextAttributes ??= $this->contextAttributesFactory->newContextAttributes( $this->contextSource );

	return $contextAttributes[ $name ] ?? null;
	}
	}