Code Coverage for /workspace/src/extensions/GrowthExperiments/includes/PeriodicMetrics/NewcomersByMentorMetric.php

1	<?php
2
3	namespace GrowthExperiments\PeriodicMetrics;
4
5	use Wikimedia\LightweightObjectStore\ExpirationAwareness;
6	use Wikimedia\Rdbms\IReadableDatabase;
7
8	class NewcomersByMentorMetric implements IMetric {
9
10	/** @var MetricsFactory */
11	private $metricsFactory;
12
13	/** @var IReadableDatabase */
14	private $dbr;
15
16	/**
17	* @param MetricsFactory $metricsFactory
18	* @param IReadableDatabase $dbr
19	*/
20	public function __construct(
21	MetricsFactory $metricsFactory,
22	IReadableDatabase $dbr
23	) {
24	$this->metricsFactory = $metricsFactory;
25	$this->dbr = $dbr;
26	}
27
28	/**
29	* @inheritDoc
30	*/
31	public function calculate(): int {
32	$autoMentors = $this->metricsFactory
33	->newMetric( AutoAssignedMentorsMetric::class )
34	->calculate();
35
36	if ( $autoMentors === 0 ) {
37	// prevent a "Divison by zero" PHP Warning coming from $recentAccounts / $autoMentors
38	// below
39	return 0;
40	}
41
42	$recentAccounts = $this->dbr->newSelectQueryBuilder()
43	->select( 'COUNT(*)' )
44	->from( 'logging' )
45	->where( [
46	'log_type' => 'newusers',
47	'log_action' => 'create',
48	$this->dbr->expr( 'log_timestamp', '>', $this->dbr->timestamp(
49	(int)wfTimestamp() - ExpirationAwareness::TTL_MONTH
50	) )
51	] )
52	->caller( __METHOD__ )
53	->fetchField();
54
55	return (int)round(
56	$recentAccounts / $autoMentors
57	);
58	}
59
60	/**
61	* @inheritDoc
62	*/
63	public function getStatsdKey(): string {
64	return 'GrowthExperiments.Mentorship.NewcomerByMentors';
65	}
66	}