Viewing file:  ActionScheduler_DataController.php (5.14 KB) -rw-r--r--
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<?php
use Action_Scheduler\Migration\Controller;
/**
* Class ActionScheduler_DataController
*
* The main plugin/initialization class for the data stores.
*
* Responsible for hooking everything up with WordPress.
*
* @package Action_Scheduler
*
* @since 3.0.0
*/
class ActionScheduler_DataController {
/** Action data store class name. */
const DATASTORE_CLASS = 'ActionScheduler_DBStore';
/** Logger data store class name. */
const LOGGER_CLASS = 'ActionScheduler_DBLogger';
/** Migration status option name. */
const STATUS_FLAG = 'action_scheduler_migration_status';
/** Migration status option value. */
const STATUS_COMPLETE = 'complete';
/** Migration minimum required PHP version. */
const MIN_PHP_VERSION = '5.5';
/** @var ActionScheduler_DataController */
private static $instance;
/** @var int */
private static $sleep_time = 0;
/** @var int */
private static $free_ticks = 50;
/**
* Get a flag indicating whether the migration environment dependencies are met.
*
* @return bool
*/
public static function dependencies_met() {
$php_support = version_compare( PHP_VERSION, self::MIN_PHP_VERSION, '>=' );
return $php_support && apply_filters( 'action_scheduler_migration_dependencies_met', true );
}
/**
* Get a flag indicating whether the migration is complete.
*
* @return bool Whether the flag has been set marking the migration as complete
*/
public static function is_migration_complete() {
return get_option( self::STATUS_FLAG ) === self::STATUS_COMPLETE;
}
/**
* Mark the migration as complete.
*/
public static function mark_migration_complete() {
update_option( self::STATUS_FLAG, self::STATUS_COMPLETE );
}
/**
* Unmark migration when a plugin is de-activated. Will not work in case of silent activation, for example in an update.
* 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
* deactivated and the site was running on AS 2.x again.
*/
public static function mark_migration_incomplete() {
delete_option( self::STATUS_FLAG );
}
/**
* Set the action store class name.
*
* @param string $class Classname of the store class.
*
* @return string
*/
public static function set_store_class( $class ) {
return self::DATASTORE_CLASS;
}
/**
* Set the action logger class name.
*
* @param string $class Classname of the logger class.
*
* @return string
*/
public static function set_logger_class( $class ) {
return self::LOGGER_CLASS;
}
/**
* Set the sleep time in seconds.
*
* @param integer $sleep_time The number of seconds to pause before resuming operation.
*/
public static function set_sleep_time( $sleep_time ) {
self::$sleep_time = (int) $sleep_time;
}
/**
* Set the tick count required for freeing memory.
*
* @param integer $free_ticks The number of ticks to free memory on.
*/
public static function set_free_ticks( $free_ticks ) {
self::$free_ticks = (int) $free_ticks;
}
/**
* Free memory if conditions are met.
*
* @param int $ticks Current tick count.
*/
public static function maybe_free_memory( $ticks ) {
if ( self::$free_ticks && 0 === $ticks % self::$free_ticks ) {
self::free_memory();
}
}
/**
* Reduce memory footprint by clearing the database query and object caches.
*/
public static function free_memory() {
if ( 0 < self::$sleep_time ) {
/* translators: %d: amount of time */
\WP_CLI::warning( sprintf( _n( 'Stopped the insanity for %d second', 'Stopped the insanity for %d seconds', self::$sleep_time, 'kkart' ), self::$sleep_time ) );
sleep( self::$sleep_time );
}
\WP_CLI::warning( __( 'Attempting to reduce used memory...', 'kkart' ) );
/**
* @var $wpdb \wpdb
* @var $wp_object_cache \WP_Object_Cache
*/
global $wpdb, $wp_object_cache;
$wpdb->queries = array();
if ( ! is_a( $wp_object_cache, 'WP_Object_Cache' ) ) {
return;
}
$wp_object_cache->group_ops = array();
$wp_object_cache->stats = array();
$wp_object_cache->memcache_debug = array();
$wp_object_cache->cache = array();
if ( is_callable( array( $wp_object_cache, '__remoteset' ) ) ) {
call_user_func( array( $wp_object_cache, '__remoteset' ) ); // important
}
}
/**
* Connect to table datastores if migration is complete.
* Otherwise, proceed with the migration if the dependencies have been met.
*/
public static function init() {
if ( self::is_migration_complete() ) {
add_filter( 'action_scheduler_store_class', array( 'ActionScheduler_DataController', 'set_store_class' ), 100 );
add_filter( 'action_scheduler_logger_class', array( 'ActionScheduler_DataController', 'set_logger_class' ), 100 );
add_action( 'deactivate_plugin', array( 'ActionScheduler_DataController', 'mark_migration_incomplete' ) );
} elseif ( self::dependencies_met() ) {
Controller::init();
}
add_action( 'action_scheduler/progress_tick', array( 'ActionScheduler_DataController', 'maybe_free_memory' ) );
}
/**
* Singleton factory.
*/
public static function instance() {
if ( ! isset( self::$instance ) ) {
self::$instance = new static();
}
return self::$instance;
}
}
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