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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Sync package.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @package  automattic/jetpack-sync  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Automattic\Jetpack\Sync;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This class will handle checkout of Sync queues for REST Endpoints.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @since 9.9.0  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                class REST_Sender { | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * Items pending send.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @var array  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	public $items = array();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * Checkout objects from the queue  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @param string $queue_name   Name of Queue.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @param int    $number_of_items Number of Items.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @param array  $args          arguments.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @return array|WP_Error  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                	public function queue_pull( $queue_name, $number_of_items, $args ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$queue = new Queue( $queue_name );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if ( 0 === $queue->size() ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			return new WP_Error( 'queue_size', 'The queue is empty and there is nothing to send', 400 );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$sender = Sender::get_instance();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		// try to give ourselves as much time as possible.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		set_time_limit( 0 );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if ( $args['pop'] ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$buffer = new Queue_Buffer( 'pop', $queue->pop( $number_of_items ) );  | 
            
                            
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                		} else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			// let's delete the checkin state.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			if ( $args['force'] ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				$queue->unlock();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$buffer = $this->get_buffer( $queue, $number_of_items );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		// Check that the $buffer is not checkout out already.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if ( is_wp_error( $buffer ) ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			return new WP_Error( 'buffer_open', "We couldn't get the buffer it is currently checked out", 400 );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if ( ! is_object( $buffer ) ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			return new WP_Error( 'buffer_non-object', 'Buffer is not an object', 400 );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		Settings::set_is_syncing( true );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		list( $items_to_send, $skipped_items_ids ) = $sender->get_items_to_send( $buffer, $args['encode'] );  | 
            
                            
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                		Settings::set_is_syncing( false );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		return array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'buffer_id'      => $buffer->id,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'items'          => $items_to_send,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'skipped_items'  => $skipped_items_ids,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'codec'          => $args['encode'] ? $sender->get_codec()->name() : null,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'sent_timestamp' => time(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		);  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                	}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * Adds Sync items to local property.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function jetpack_sync_send_data_listener() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		foreach ( func_get_args()[0] as $key => $item ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$this->items[ $key ] = $item;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                	}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * Check out a buffer of full sync actions.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @return array Sync Actions to be returned to requestor  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                View Code Duplication | 
                	public function immediate_full_sync_pull() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		// try to give ourselves as much time as possible.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		set_time_limit( 0 );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$original_send_data_cb = array( 'Automattic\Jetpack\Sync\Actions', 'send_data' );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$temp_send_data_cb     = array( $this, 'jetpack_sync_send_data_listener' );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		Sender::get_instance()->set_enqueue_wait_time( 0 );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		remove_filter( 'jetpack_sync_send_data', $original_send_data_cb );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		add_filter( 'jetpack_sync_send_data', $temp_send_data_cb, 10, 6 );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		Sender::get_instance()->do_full_sync();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		remove_filter( 'jetpack_sync_send_data', $temp_send_data_cb );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		add_filter( 'jetpack_sync_send_data', $original_send_data_cb, 10, 6 );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		return array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'items'          => $this->items,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'codec'          => Sender::get_instance()->get_codec()->name(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'sent_timestamp' => time(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			'status'         => Actions::get_sync_status(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		);  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                	}  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * Checkout items out of the sync queue.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @param Queue $queue         Sync Queue.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @param int   $number_of_items Number of items to checkout.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 * @return WP_Error  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                View Code Duplication | 
                	protected function get_buffer( $queue, $number_of_items ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$start        = time();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$max_duration = 5; // this will try to get the buffer.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$buffer   = $queue->checkout( $number_of_items );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$duration = time() - $start;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		while ( is_wp_error( $buffer ) && $duration < $max_duration ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			sleep( 2 );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                                     | 
                
                 | 
                			$duration = time() - $start;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    130
                 | 
                                    
                                                     | 
                
                 | 
                			$buffer   = $queue->checkout( $number_of_items );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    131
                 | 
                                    
                                                     | 
                
                 | 
                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    132
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    133
                 | 
                                    
                                                     | 
                
                 | 
                		if ( false === $buffer ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    134
                 | 
                                    
                                                     | 
                
                 | 
                			return new WP_Error( 'queue_size', 'The queue is empty and there is nothing to send', 400 );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    135
                 | 
                                    
                                                     | 
                
                 | 
                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    136
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    137
                 | 
                                    
                                                     | 
                
                 | 
                		return $buffer;  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    138
                 | 
                                    
                                                     | 
                
                 | 
                	}  | 
            
            
                                                        
            
                                    
            
            
                | 
                    139
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                        
            
                                    
            
            
                | 
                    140
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    141
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                        
This check looks at variables that are passed out again to other methods.
If the outgoing method call has stricter type requirements than the method itself, an issue is raised.
An additional type check may prevent trouble.