Jetpack_Sync_Actions

Complexity

Total Complexity

45

Size/Duplication

Total Lines	270
Duplicated Lines	0 %

Coupling/Cohesion

Components	2
Dependencies	6

Importance

Changes	14
Bugs	2	Features	2

14 Methods

Rating	Name	Duplication	Size	Complexity
B	send_data()	0	24	2
A	set_is_importing_true()	0	3	1
A	get_initial_sync_user_config()	0	11	2
A	schedule_initial_sync()	0	23	2
C	init()	0	89	11
B	sync_allowed()	0	4	5
A	schedule_full_sync()	0	17	4
A	is_scheduled_full_sync()	0	14	4
A	do_full_sync()	0	9	2
A	minute_cron_schedule()	0	9	2
C	do_cron_sync()	0	27	7
A	send_db_checksum()	0	6	1
A	initialize_listener()	0	4	1
A	initialize_sender()	0	7	1

<?php
require_once dirname( __FILE__ ) . '/class.jetpack-sync-settings.php';

/**
 * The role of this class is to hook the Sync subsystem into WordPress - when to listen for actions,
 * when to send, when to perform a full sync, etc.
 *
 * It also binds the action to send data to WPCOM to Jetpack's XMLRPC client object.
 */
class Jetpack_Sync_Actions {
	static $sender = null;

The visibility should be declared for property $sender.

	static $listener = null;

The visibility should be declared for property $listener.

	const MAX_INITIAL_SYNC_USERS = 500;
	const INITIAL_SYNC_MULTISITE_INTERVAL = 10;

	static function init() {
		
		// Add a custom "every minute" cron schedule
		add_filter( 'cron_schedules', array( __CLASS__, 'minute_cron_schedule' ) );

		// On jetpack authorization, schedule a full sync
		add_action( 'jetpack_client_authorized', array( __CLASS__, 'schedule_full_sync' ) );
		
		// When imports are finished, schedule a full sync
		add_action( 'import_end', array( __CLASS__, 'schedule_full_sync' ) );

		// When importing via cron, do not sync
		add_action( 'wp_cron_importer_hook', array( __CLASS__, 'set_is_importing_true' ), 1 );

		// Sync connected user role changes to .com
		require_once dirname( __FILE__ ) . '/class.jetpack-sync-users.php';

		// everything below this point should only happen if we're a valid sync site
		if ( ! self::sync_allowed() ) {
			return;
		}

		// cron hooks
		add_action( 'jetpack_sync_send_db_checksum', array( __CLASS__, 'send_db_checksum' ) );
		add_action( 'jetpack_sync_full', array( __CLASS__, 'do_full_sync' ), 10, 1 );
		add_action( 'jetpack_sync_cron', array( __CLASS__, 'do_cron_sync' ) );

		if ( ! wp_next_scheduled( 'jetpack_sync_send_db_checksum' ) ) {
			// Schedule a job to send DB checksums once an hour
			wp_schedule_event( time(), 'hourly', 'jetpack_sync_send_db_checksum' );
		}

		if ( ! wp_next_scheduled( 'jetpack_sync_cron' ) ) {
			// Schedule a job to send pending queue items once a minute
			wp_schedule_event( time(), '1min', 'jetpack_sync_cron' );
		}

		/**
		 * Fires on every request before default loading sync listener code.
		 * Return false to not load sync listener code that monitors common
		 * WP actions to be serialized.
		 *
		 * By default this returns true for non-GET-requests, or requests where the
		 * user is logged-in.
		 *
		 * @since 4.2.0
		 *
		 * @param bool should we load sync listener code for this request
		 */
		if ( apply_filters( 'jetpack_sync_listener_should_load',
			(
				'GET' !== $_SERVER['REQUEST_METHOD']
				||
				is_user_logged_in()
				||
				defined( 'PHPUNIT_JETPACK_TESTSUITE' )
			)
		) ) {
			self::initialize_listener();
		}

		/**
		 * Fires on every request before default loading sync sender code.
		 * Return false to not load sync sender code that serializes pending
		 * data and sends it to WPCOM for processing.
		 *
		 * By default this returns true for POST requests, admin requests, or requests
		 * by users who can manage_options.
		 *
		 * @since 4.2.0
		 *
		 * @param bool should we load sync sender code for this request
		 */
		if ( apply_filters( 'jetpack_sync_sender_should_load',
			(
				'POST' === $_SERVER['REQUEST_METHOD']
				||
				current_user_can( 'manage_options' )
				||
				is_admin()
				||
				defined( 'PHPUNIT_JETPACK_TESTSUITE' )
			)
		) ) {
			self::initialize_sender();
			add_action( 'shutdown', array( self::$sender, 'do_sync' ) );
		}

	}

	static function sync_allowed() {
		return ( ! Jetpack_Sync_Settings::get_setting( 'disable' ) && Jetpack::is_active() && ! ( Jetpack::is_development_mode() || Jetpack::is_staging_site() ) )
			   || defined( 'PHPUNIT_JETPACK_TESTSUITE' );
	}

	static function set_is_importing_true() {
		Jetpack_Sync_Settings::set_importing( true );
	}

	static function send_data( $data, $codec_name, $sent_timestamp, $queue_id ) {
		Jetpack::load_xml_rpc_client();

		$url = add_query_arg( array(
			'sync'      => '1', // add an extra parameter to the URL so we can tell it's a sync action
			'codec'     => $codec_name, // send the name of the codec used to encode the data
			'timestamp' => $sent_timestamp, // send current server time so we can compensate for clock differences
			'queue'     => $queue_id, // sync or full_sync
		), Jetpack::xmlrpc_api_url() );

		$rpc = new Jetpack_IXR_Client( array(
			'url'     => $url,
			'user_id' => JETPACK_MASTER_USER,
			'timeout' => 30,
		) );

		$result = $rpc->query( 'jetpack.syncActions', $data );

		if ( ! $result ) {
			return $rpc->get_jetpack_error();
		}

		return $rpc->getResponse();
	}

	static function get_initial_sync_user_config() {
		global $wpdb;

		$users_count = $wpdb->get_var( "SELECT count(*) FROM $wpdb->usermeta WHERE meta_key = '{$wpdb->prefix}user_level' AND meta_value > 0" );

		if ( $users_count <= self::MAX_INITIAL_SYNC_USERS ) {
			return $wpdb->get_col( "SELECT user_id FROM $wpdb->usermeta WHERE meta_key = '{$wpdb->prefix}user_level' AND meta_value > 0" );
		} else {
			return false;
		}
	}

	static function schedule_initial_sync() {
		// we need this function call here because we have to run this function
		// reeeeally early in init, before WP_CRON_LOCK_TIMEOUT is defined.
		wp_functionality_constants();

		if ( is_multisite() ) {
			// stagger initial syncs for multisite blogs so they don't all pile on top of each other
			$time_offset = ( rand() / getrandmax() ) * self::INITIAL_SYNC_MULTISITE_INTERVAL * get_blog_count();
		} else {
			$time_offset = 1;
		}

		self::schedule_full_sync( 
			array( 
				'options' => true, 
				'network_options' => true, 
				'functions' => true, 
				'constants' => true, 
				'users' => self::get_initial_sync_user_config() 
			),
			$time_offset
		);
	}

	static function schedule_full_sync( $modules = null, $time_offset = 1 ) {
		if ( ! self::sync_allowed() ) {
			return false;
		}

		if ( $modules ) {
			wp_schedule_single_event( time() + $time_offset, 'jetpack_sync_full', array( $modules ) );
		} else {
			wp_schedule_single_event( time() + $time_offset, 'jetpack_sync_full' );
		}

		if ( $time_offset === 1 ) {
			spawn_cron();
		}

		return true;
	}

	static function is_scheduled_full_sync( $modules = null ) {
		if ( is_null( $modules ) ) {
			$crons = _get_cron_array();
			
			foreach ( $crons as $timestamp => $cron ) {
				if ( ! empty( $cron['jetpack_sync_full'] ) ) {
					return true;
				}
			}
			return false;
		}

		return wp_next_scheduled( 'jetpack_sync_full', array( $modules ) );
	}

	static function do_full_sync( $modules = null ) {
		if ( ! self::sync_allowed() ) {
			return;
		}

		self::initialize_listener();
		Jetpack_Sync_Modules::get_module( 'full-sync' )->start( $modules );
		self::do_cron_sync(); // immediately run a cron sync, which sends pending data
	}

	static function minute_cron_schedule( $schedules ) {
		if( ! isset( $schedules["1min"] ) ) {
			$schedules["1min"] = array(
				'interval' => 60,
				'display' => __( 'Every minute' ) 
			);
		}
		return $schedules;
	}

	// try to send actions until we run out of things to send,
	// or have to wait more than 15s before sending again,
	// or we hit a lock or some other sending issue
	static function do_cron_sync() {
		if ( ! self::sync_allowed() ) {
			return;
		}

		self::initialize_sender();
		
		// remove shutdown hook - no need to sync twice
		if ( has_action( 'shutdown', array( self::$sender, 'do_sync' ) ) ) {
			remove_action( 'shutdown', array( self::$sender, 'do_sync' ) );
		}

		do {
			$next_sync_time = self::$sender->get_next_sync_time();
			
			if ( $next_sync_time ) {
				$delay = $next_sync_time - time() + 1;
				if ( $delay > 15 ) {
					break;
				} elseif ( $delay > 0 ) {
					sleep( $delay );
				}
			}

			$result = self::$sender->do_sync();
		} while ( $result );
	}

	static function send_db_checksum() {
		self::initialize_listener();
		self::initialize_sender();
		self::$sender->send_checksum();
		self::$sender->do_sync();
	}

	static function initialize_listener() {
		require_once dirname( __FILE__ ) . '/class.jetpack-sync-listener.php';
		self::$listener = Jetpack_Sync_Listener::get_instance();
	}

	static function initialize_sender() {
		require_once dirname( __FILE__ ) . '/class.jetpack-sync-sender.php';
		self::$sender = Jetpack_Sync_Sender::get_instance();

		// bind the sending process
		add_filter( 'jetpack_sync_send_data', array( __CLASS__, 'send_data' ), 10, 4 );
	}
}

// Allow other plugins to add filters before we initialize the actions.
// Load the listeners if before modules get loaded so that we can capture version changes etc.
add_action( 'init', array( 'Jetpack_Sync_Actions', 'init' ), 90 );

// We need to define this here so that it's hooked before `updating_jetpack_version` is called
add_action( 'updating_jetpack_version', array( 'Jetpack_Sync_Actions', 'schedule_initial_sync' ), 10 );