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<?php |
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/** |
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* Basic methods implemented by Jetpack Sync extensions |
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*/ |
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abstract class Jetpack_Sync_Module { |
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const ARRAY_CHUNK_SIZE = 10; |
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abstract public function name(); |
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// override these to set up listeners and set/reset data/defaults |
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public function init_listeners( $callable ) {} |
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public function init_before_send() {} |
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public function set_defaults() {} |
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public function reset_data() {} |
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public function enqueue_full_sync_actions() { |
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// in subclasses, return the number of items enqueued |
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return 0; |
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} |
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public function get_full_sync_actions() { |
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return array(); |
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} |
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protected function count_actions( $action_names, $actions_to_count ) { |
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return count( array_intersect( $action_names, $actions_to_count ) ); |
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} |
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final public function full_sync() { |
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$items_enqueued = $this->enqueue_full_sync_actions(); |
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if ( $items_enqueued !== 0 ) { |
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$this->update_queue_progress( $this->name(), $items_enqueued ); |
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} |
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} |
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protected function get_check_sum( $values ) { |
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return crc32( json_encode( $values ) ); |
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} |
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protected function still_valid_checksum( $sums_to_check, $name, $new_sum ) { |
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if ( isset( $sums_to_check[ $name ] ) && $sums_to_check[ $name ] === $new_sum ) { |
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return true; |
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} |
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return false; |
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} |
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public function update_queue_progress( $module, $data ) { |
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$full_sync_module = Jetpack_Sync_Modules::get_module( 'full-sync' ); |
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$status = $full_sync_module->get_status(); |
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if ( isset( $status['queue'][ $module ] ) ) { |
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$status['queue'][ $module ] = $data + $status['queue'][ $module ]; |
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} else { |
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$status['queue'][ $module ] = $data; |
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} |
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return $full_sync_module->update_status( $status ); |
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} |
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protected function enqueue_all_ids_as_action( $action_name, $table_name, $id_field, $where_sql ) { |
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global $wpdb; |
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if ( ! $where_sql ) { |
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$where_sql = "1 = 1"; |
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} |
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$items_per_page = 500; |
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$page = 1; |
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$offset = ( $page * $items_per_page ) - $items_per_page; |
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$chunk_count = 0; |
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while( $ids = $wpdb->get_col( "SELECT {$id_field} FROM {$table_name} WHERE {$where_sql} ORDER BY {$id_field} asc LIMIT {$offset}, {$items_per_page}" ) ) { |
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// Request posts in groups of N for efficiency |
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$chunked_ids = array_chunk( $ids, self::ARRAY_CHUNK_SIZE ); |
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// Send each chunk as an array of objects |
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foreach ( $chunked_ids as $chunk ) { |
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/** |
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* Fires with a chunk of object IDs during full sync. |
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* These are expanded to full objects before upload |
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* |
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* @since 4.2.0 |
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*/ |
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do_action( $action_name, $chunk ); |
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$chunk_count++; |
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} |
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$page += 1; |
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$offset = ( $page * $items_per_page ) - $items_per_page; |
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} |
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return $chunk_count; |
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} |
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protected function get_metadata( $ids, $meta_type ) { |
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global $wpdb; |
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$table = _get_meta_table( $meta_type ); |
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$id = $meta_type . '_id'; |
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if ( ! $table ) { |
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return array(); |
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} |
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return $wpdb->get_results( "SELECT $id, meta_key, meta_value, meta_id FROM $table WHERE $id IN ( " . implode( ',', wp_parse_id_list( $ids ) ) . " )", OBJECT ); |
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} |
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protected function get_term_relationships( $ids ) { |
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global $wpdb; |
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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 ); |
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} |
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} |
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Automattic /
jetpack
