class.jetpack-heartbeat.php — Jetpack – WP Security, Backup, Speed, & Growth 2.9.6

jetpack / class.jetpack-heartbeat.php

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class.jetpack-heartbeat.php

139 lines

1	<?php
2
3	class Jetpack_Heartbeat {
4
5	/**
6	* Holds the singleton instance of this class
7	*
8	* @since 2.3.3
9	* @var Jetpack_Heartbeat
10	*/
11	static $instance = false;
12
13	private $cron_name = 'jetpack_heartbeat';
14
15	/**
16	* Singleton
17	*
18	* @since 2.3.3
19	* @static
20	* @return Jetpack_Heartbeat
21	*/
22	public static function init() {
23	if ( ! self::$instance ) {
24	self::$instance = new Jetpack_Heartbeat;
25	}
26
27	return self::$instance;
28	}
29
30	/**
31	* Constructor for singleton
32	*
33	* @since 2.3.3
34	* @return Jetpack_Heartbeat
35	*/
36	private function __construct() {
37	if ( ! Jetpack::is_active() )
38	return;
39
40	// Add weekly interval for wp-cron
41	add_filter( 'cron_schedules', array( $this, 'add_cron_intervals' ) );
42
43	// Schedule the task
44	add_action( $this->cron_name, array( $this, 'cron_exec' ) );
45
46	if ( ! wp_next_scheduled( $this->cron_name ) ) {
47	wp_schedule_event( time(), 'jetpack_weekly', $this->cron_name );
48	}
49	}
50
51	/**
52	* Method that gets executed on the wp-cron call
53	*
54	* @since 2.3.3
55	* @global string $wp_version
56	*/
57	public function cron_exec() {
58
59	/*
60	* This should run weekly. Figuring in for variances in
61	* WP_CRON, don't let it run more than every six days at most.
62	*
63	* i.e. if it ran less than six days ago, fail out.
64	*/
65	$last = (int) Jetpack_Options::get_option( 'last_heartbeat' );
66	if ( $last && ( $last + WEEK_IN_SECONDS - DAY_IN_SECONDS > time() ) ) {
67	return;
68	}
69
70	/*
71	* Check for an identity crisis
72	*
73	* If one exists:
74	* - Bump stat for ID crisis
75	* - Email site admin about potential ID crisis
76	*/
77
78
79
80	/**
81	* Setup an array of items that will eventually be stringified
82	* and sent off to the Jetpack API
83	*
84	* Associative array with format group => values
85	* - values should be an array that will be imploded to a string
86	*/
87
88	$jetpack = Jetpack::init();
89
90	$jetpack->stat( 'active-modules', implode( ',', $jetpack->get_active_modules() ) );
91	$jetpack->stat( 'active', JETPACK__VERSION );
92	$jetpack->stat( 'wp-version', get_bloginfo( 'version' ) );
93	$jetpack->stat( 'php-version', PHP_VERSION );
94	$jetpack->stat( 'ssl', $jetpack->permit_ssl() );
95	$jetpack->stat( 'language', get_bloginfo( 'language' ) );
96	$jetpack->stat( 'charset', get_bloginfo( 'charset' ) );
97	$jetpack->stat( 'qty-posts', wp_count_posts()->publish );
98	$jetpack->stat( 'qty-pages', wp_count_posts( 'page' )->publish );
99	$jetpack->stat( 'qty-comments', wp_count_comments()->approved );
100	$jetpack->stat( 'is-multisite', is_multisite() ? 'multisite' : 'singlesite' );
101	$jetpack->stat( 'identitycrisis', Jetpack::check_identity_crisis( 1 ) ? 'yes' : 'no' );
102
103	// Only check a few plugins, to see if they're currently active.
104	$plugins_to_check = array(
105	'vaultpress/vaultpress.php',
106	'akismet/akismet.php',
107	'wp-super-cache/wp-cache.php',
108	);
109	$plugins = array_intersect( $plugins_to_check, get_option( 'active_plugins', array() ) );
110	foreach( $plugins as $plugin ) {
111	$jetpack->stat( 'plugins', $plugin );
112	}
113
114	Jetpack_Options::update_option( 'last_heartbeat', time() );
115
116	$jetpack->do_stats( 'server_side' );
117	}
118
119	/**
120	* Adds additional Jetpack specific intervals to wp-cron
121	*
122	* @since 2.3.3
123	* @return array
124	*/
125	public function add_cron_intervals( $schedules ) {
126	$schedules['jetpack_weekly'] = array(
127	'interval' => WEEK_IN_SECONDS,
128	'display' => __( 'Jetpack weekly', 'jetpack' ),
129	);
130	return $schedules;
131	}
132
133	public function deactivate() {
134	$timestamp = wp_next_scheduled( $this->cron_name );
135	wp_unschedule_event( $timestamp, $this->cron_name );
136	}
137
138	}
139