Jetpack_Sync_Module

Complexity

Total Complexity

26

Size/Duplication

Total Lines	124
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	1

Importance

Changes	9
Bugs	3	Features	3

18 Methods

Rating	Name	Duplication	Size	Complexity
	name()	0	1	?
A	get_object_by_id()	0	3	1
A	init_listeners()	0	2	1
A	init_before_send()	0	2	1
A	set_defaults()	0	2	1
A	reset_data()	0	2	1
A	enqueue_full_sync_actions()	0	4	1
A	get_full_sync_actions()	0	3	1
A	count_actions()	0	3	1
A	get_check_sum()	0	3	1
A	still_valid_checksum()	0	7	3
A	get_term_relationships()	0	5	1
A	init_full_sync_listeners()	0	2	1
A	estimate_full_sync_actions()	0	4	1
A	get_metadata()	0	13	2
A	unserialize_meta()	0	4	1
B	enqueue_all_ids_as_action()	0	25	3
B	get_objects_by_id()	0	17	5

<?php

/**
 * Basic methods implemented by Jetpack Sync extensions
 */
abstract class Jetpack_Sync_Module {
	const ARRAY_CHUNK_SIZE = 10;

	abstract public function name();

	public function get_object_by_id( $object_type, $id ) {
		return false;
	}

	// override these to set up listeners and set/reset data/defaults
	public function init_listeners( $callable ) {
	}

	public function init_full_sync_listeners( $callable ) {
	}

	public function init_before_send() {
	}

	public function set_defaults() {
	}

	public function reset_data() {
	}

	public function enqueue_full_sync_actions( $config ) {
		// in subclasses, return the number of items enqueued
		return 0;
	}

	public function estimate_full_sync_actions( $config ) {
		// in subclasses, return the number of items yet to be enqueued
		return 0;
	}

	public function get_full_sync_actions() {
		return array();
	}

	protected function count_actions( $action_names, $actions_to_count ) {
		return count( array_intersect( $action_names, $actions_to_count ) );
	}

	protected function get_check_sum( $values ) {
		return crc32( json_encode( $values ) );
	}

	protected function still_valid_checksum( $sums_to_check, $name, $new_sum ) {
		if ( isset( $sums_to_check[ $name ] ) && $sums_to_check[ $name ] === $new_sum ) {
			return true;
		}

		return false;
	}

	protected function enqueue_all_ids_as_action( $action_name, $table_name, $id_field, $where_sql ) {
		global $wpdb;

		if ( ! $where_sql ) {
			$where_sql = '1 = 1';
		}

		$items_per_page = 1000;
		$page           = 1;
		$chunk_count    = 0;
		$previous_id    = 0;
		$listener       = Jetpack_Sync_Listener::get_instance();
		while ( $ids = $wpdb->get_col( "SELECT {$id_field} FROM {$table_name} WHERE {$where_sql} AND {$id_field} > {$previous_id} ORDER BY {$id_field} ASC LIMIT {$items_per_page}" ) ) {
			// Request posts in groups of N for efficiency
			$chunked_ids = array_chunk( $ids, self::ARRAY_CHUNK_SIZE );

			$listener->bulk_enqueue_full_sync_actions( $action_name, $chunked_ids );

			$chunk_count += count( $chunked_ids );
			$page += 1;
			$previous_id = end( $ids );
		}

		return $chunk_count;
	}

	protected function get_metadata( $ids, $meta_type ) {
		global $wpdb;
		$table = _get_meta_table( $meta_type );
		$id    = $meta_type . '_id';
		if ( ! $table ) {
			return array();
		}

		return array_map( 
			array( $this, 'unserialize_meta' ), 
			$wpdb->get_results( "SELECT $id, meta_key, meta_value, meta_id FROM $table WHERE $id IN ( " . implode( ',', wp_parse_id_list( $ids ) ) . ' )', OBJECT ) 
		);
	}

	protected function get_term_relationships( $ids ) {
		global $wpdb;

		return $wpdb->get_results( "SELECT object_id, term_taxonomy_id FROM $wpdb->term_relationships WHERE object_id IN ( " . implode( ',', wp_parse_id_list( $ids ) ) . ' )', OBJECT );
	}

	public function unserialize_meta( $meta ) {
		$meta->meta_value = maybe_unserialize( $meta->meta_value );
		return $meta;
	}

	public function get_objects_by_id( $object_type, $ids ) {
		if ( empty( $ids ) || empty( $object_type ) ) {
			return array();
		}

		$objects = array();
		foreach( (array) $ids as $id ) {
			$object = $this->get_object_by_id( $object_type, $id );

			// Only add object if we have the object.
			if ( $object ) {
				$objects[ $id ] = $object;
			}
		}

		return $objects;
	}
}