ArrayStatsStore.php
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ArrayStatsStore.php
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	<?php

	namespace Wikimedia\WRStats;

	/**
	* In-memory stats store.
	*/
	class ArrayStatsStore implements StatsStore {
	/**
	* @var array[] Associative array mapping data keys to arrays where the
	* first entry is the value and the second is the TTL.
	*/
	private $data = [];

	public function makeKey( $prefix, $internals, $entity ) {
	$globality = $entity->isGlobal() ? 'global' : 'local';
	return implode( ':',
	array_merge( [ $globality ], $prefix, $internals, $entity->getComponents() )
	);
	}

	public function incr( array $values, $ttl ) {
	foreach ( $values as $key => $value ) {
	if ( !isset( $this->data[$key] ) ) {
	$this->data[$key] = [ 0, $ttl ];
	}
	$this->data[$key][0] += $value;
	}
	}

	public function delete( array $keys ) {
	foreach ( $keys as $key ) {
	unset( $this->data[$key] );
	}
	}

	public function query( array $keys ) {
	$values = [];
	foreach ( $keys as $key ) {
	if ( isset( $this->data[$key] ) ) {
	$values[$key] = $this->data[$key][0];
	}
	}
	return $values;
	}

	/**
	* @return array
	*/
	public function getData() {
	return $this->data;
	}
	}