notifier / libraries / action-scheduler / classes / ActionScheduler_DataController.php

ActionScheduler_DataController.php in WANotifier for Forms and Actions 3.1.1, at libraries/action-scheduler/classes/ActionScheduler_DataController.php

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1	<?php
2
3	use Action_Scheduler\Migration\Controller;
4
5	/**
6	* Class ActionScheduler_DataController
7	*
8	* The main plugin/initialization class for the data stores.
9	*
10	* Responsible for hooking everything up with WordPress.
11	*
12	* @package Action_Scheduler
13	*
14	* @since 3.0.0
15	*/
16	class ActionScheduler_DataController {
17	/** Action data store class name. */
18	const DATASTORE_CLASS = 'ActionScheduler_DBStore';
19
20	/** Logger data store class name. */
21	const LOGGER_CLASS = 'ActionScheduler_DBLogger';
22
23	/** Migration status option name. */
24	const STATUS_FLAG = 'action_scheduler_migration_status';
25
26	/** Migration status option value. */
27	const STATUS_COMPLETE = 'complete';
28
29	/** Migration minimum required PHP version. */
30	const MIN_PHP_VERSION = '5.5';
31
32	/**
33	* Instance.
34	*
35	* @var ActionScheduler_DataController
36	*/
37	private static $instance;
38
39	/**
40	* Sleep time in seconds.
41	*
42	* @var int
43	*/
44	private static $sleep_time = 0;
45
46	/**
47	* Tick count required for freeing memory.
48	*
49	* @var int
50	*/
51	private static $free_ticks = 50;
52
53	/**
54	* Get a flag indicating whether the migration environment dependencies are met.
55	*
56	* @return bool
57	*/
58	public static function dependencies_met() {
59	$php_support = version_compare( PHP_VERSION, self::MIN_PHP_VERSION, '>=' );
60	return $php_support && apply_filters( 'action_scheduler_migration_dependencies_met', true );
61	}
62
63	/**
64	* Get a flag indicating whether the migration is complete.
65	*
66	* @return bool Whether the flag has been set marking the migration as complete
67	*/
68	public static function is_migration_complete() {
69	return get_option( self::STATUS_FLAG ) === self::STATUS_COMPLETE;
70	}
71
72	/**
73	* Mark the migration as complete.
74	*/
75	public static function mark_migration_complete() {
76	update_option( self::STATUS_FLAG, self::STATUS_COMPLETE );
77	}
78
79	/**
80	* Unmark migration when a plugin is de-activated. Will not work in case of silent activation, for example in an update.
81	* We do this to mitigate the bug of lost actions which happens if there was an AS 2.x to AS 3.x migration in the past, but that plugin is now
82	* deactivated and the site was running on AS 2.x again.
83	*/
84	public static function mark_migration_incomplete() {
85	delete_option( self::STATUS_FLAG );
86	}
87
88	/**
89	* Set the action store class name.
90	*
91	* @param string $class Classname of the store class.
92	*
93	* @return string
94	*/
95	public static function set_store_class( $class ) {
96	return self::DATASTORE_CLASS;
97	}
98
99	/**
100	* Set the action logger class name.
101	*
102	* @param string $class Classname of the logger class.
103	*
104	* @return string
105	*/
106	public static function set_logger_class( $class ) {
107	return self::LOGGER_CLASS;
108	}
109
110	/**
111	* Set the sleep time in seconds.
112	*
113	* @param integer $sleep_time The number of seconds to pause before resuming operation.
114	*/
115	public static function set_sleep_time( $sleep_time ) {
116	self::$sleep_time = (int) $sleep_time;
117	}
118
119	/**
120	* Set the tick count required for freeing memory.
121	*
122	* @param integer $free_ticks The number of ticks to free memory on.
123	*/
124	public static function set_free_ticks( $free_ticks ) {
125	self::$free_ticks = (int) $free_ticks;
126	}
127
128	/**
129	* Free memory if conditions are met.
130	*
131	* @param int $ticks Current tick count.
132	*/
133	public static function maybe_free_memory( $ticks ) {
134	if ( self::$free_ticks && 0 === $ticks % self::$free_ticks ) {
135	self::free_memory();
136	}
137	}
138
139	/**
140	* Reduce memory footprint by clearing the database query and object caches.
141	*/
142	public static function free_memory() {
143	if ( 0 < self::$sleep_time ) {
144	/* translators: %d: amount of time */
145	\WP_CLI::warning( sprintf( _n( 'Stopped the insanity for %d second', 'Stopped the insanity for %d seconds', self::$sleep_time, 'action-scheduler' ), self::$sleep_time ) );
146	sleep( self::$sleep_time );
147	}
148
149	\WP_CLI::warning( __( 'Attempting to reduce used memory...', 'action-scheduler' ) );
150
151	/**
152	* Globals.
153	*
154	* @var $wpdb \wpdb
155	* @var $wp_object_cache \WP_Object_Cache
156	*/
157	global $wpdb, $wp_object_cache;
158
159	$wpdb->queries = array();
160
161	if ( ! is_a( $wp_object_cache, 'WP_Object_Cache' ) ) {
162	return;
163	}
164
165	// Not all drop-ins support these props, however, there may be existing installations that rely on these being cleared.
166	if ( property_exists( $wp_object_cache, 'group_ops' ) ) {
167	$wp_object_cache->group_ops = array();
168	}
169	if ( property_exists( $wp_object_cache, 'stats' ) ) {
170	$wp_object_cache->stats = array();
171	}
172	if ( property_exists( $wp_object_cache, 'memcache_debug' ) ) {
173	$wp_object_cache->memcache_debug = array();
174	}
175	if ( property_exists( $wp_object_cache, 'cache' ) ) {
176	$wp_object_cache->cache = array();
177	}
178
179	if ( is_callable( array( $wp_object_cache, '__remoteset' ) ) ) {
180	call_user_func( array( $wp_object_cache, '__remoteset' ) ); // important!
181	}
182	}
183
184	/**
185	* Connect to table datastores if migration is complete.
186	* Otherwise, proceed with the migration if the dependencies have been met.
187	*/
188	public static function init() {
189	if ( self::is_migration_complete() ) {
190	add_filter( 'action_scheduler_store_class', array( 'ActionScheduler_DataController', 'set_store_class' ), 100 );
191	add_filter( 'action_scheduler_logger_class', array( 'ActionScheduler_DataController', 'set_logger_class' ), 100 );
192	add_action( 'deactivate_plugin', array( 'ActionScheduler_DataController', 'mark_migration_incomplete' ) );
193	} elseif ( self::dependencies_met() ) {
194	Controller::init();
195	}
196
197	add_action( 'action_scheduler/progress_tick', array( 'ActionScheduler_DataController', 'maybe_free_memory' ) );
198	}
199
200	/**
201	* Singleton factory.
202	*/
203	public static function instance() {
204	if ( ! isset( self::$instance ) ) {
205	self::$instance = new static();
206	}
207
208	return self::$instance;
209	}
210	}
211