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<?php
/**
* Term relationships sync module.
*
* @package automattic/jetpack-sync
*/
namespace Automattic\Jetpack\Sync\Modules;
use Automattic\Jetpack\Sync\Defaults;
use Automattic\Jetpack\Sync\Listener;
use Automattic\Jetpack\Sync\Settings;
/**
* Class to handle sync for term relationships.
*/
class Term_Relationships extends Module {
/**
* Sync module name.
*
* @access public
*
* @return string
*/
public function name() {
return 'term_relationships';
}
/**
* The id field in the database.
*
* @access public
*
* @return string
*/
public function id_field() {
return 'object_id';
}
/**
* The table in the database.
*
* @access public
*
* @return string
*/
public function table_name() {
return 'term_relationships';
}
/**
* Initialize term relationships action listeners for full sync.
*
* @access public
*
* @param callable $callable Action handler callable.
*/
public function init_full_sync_listeners( $callable ) {
add_action( 'jetpack_full_sync_term_relationships', $callable, 10, 2 );
}
/**
* Initialize the module in the sender.
*
* @access public
*/
public function init_before_send() {
// Full sync.
add_filter( 'jetpack_sync_before_send_jetpack_full_sync_term_relationships', array( $this, 'expand_term_relationships' ) );
}
/**
* Enqueue the term relationships actions for full sync.
*
* @access public
*
* @todo This method has similarities with Automattic\Jetpack\Sync\Modules\Module::enqueue_all_ids_as_action. Refactor to keep DRY.
* @see Automattic\Jetpack\Sync\Modules\Module::enqueue_all_ids_as_action
*
* @param array $config Full sync configuration for this sync module.
* @param int $max_items_to_enqueue Maximum number of items to enqueue.
* @param boolean $state True if full sync has finished enqueueing this module, false otherwise.
* @return array Number of actions enqueued, and next module state.
*/
public function enqueue_full_sync_actions( $config, $max_items_to_enqueue, $state ) {
global $wpdb;
$items_per_page = 1000;
$chunk_count = 0;
$previous_interval_end = $state ? $state : array(
'object_id' => '~0',
'term_taxonomy_id' => '~0',
);
$listener = Listener::get_instance();
$action_name = 'jetpack_full_sync_term_relationships';
// Count down from max_id to min_id so we get term relationships for the newest posts and terms first.
// phpcs:ignore WordPress.CodeAnalysis.AssignmentInCondition.FoundInWhileCondition, WordPress.DB.PreparedSQL.InterpolatedNotPrepared
while ( $ids = $wpdb->get_results( "SELECT object_id, term_taxonomy_id FROM $wpdb->term_relationships WHERE object_id <= {$previous_interval_end['object_id']} AND term_taxonomy_id < {$previous_interval_end['term_taxonomy_id']} ORDER BY object_id DESC, term_taxonomy_id DESC LIMIT {$items_per_page}", ARRAY_A ) ) {
// Request term relationships in groups of N for efficiency.
$chunked_ids = array_chunk( $ids, self::ARRAY_CHUNK_SIZE );
// If we hit our row limit, process and return.
if ( $chunk_count + count( $chunked_ids ) >= $max_items_to_enqueue ) {
$remaining_items_count = $max_items_to_enqueue - $chunk_count;
$remaining_items = array_slice( $chunked_ids, 0, $remaining_items_count );
$remaining_items_with_previous_interval_end = $this->get_chunks_with_preceding_end( $remaining_items, $previous_interval_end );
$listener->bulk_enqueue_full_sync_actions( $action_name, $remaining_items_with_previous_interval_end );
$last_chunk = end( $remaining_items );
return array( $remaining_items_count + $chunk_count, end( $last_chunk ) );
}
$chunked_ids_with_previous_end = $this->get_chunks_with_preceding_end( $chunked_ids, $previous_interval_end );
$listener->bulk_enqueue_full_sync_actions( $action_name, $chunked_ids_with_previous_end );
$chunk_count += count( $chunked_ids );
// The $ids are ordered in descending order.
$previous_interval_end = end( $ids );
}
return array( $chunk_count, true );
}
/**
* Retrieve an estimated number of actions that will be enqueued.
*
* @access public
*
* @param array $config Full sync configuration for this sync module.
* @return int Number of items yet to be enqueued.
*/
public function estimate_full_sync_actions( $config ) {
global $wpdb;
$query = "SELECT COUNT(*) FROM $wpdb->term_relationships";
// phpcs:disable WordPress.DB.PreparedSQL.NotPrepared
$count = $wpdb->get_var( $query );
return (int) ceil( $count / self::ARRAY_CHUNK_SIZE );
}
/**
* Retrieve the actions that will be sent for this module during a full sync.
*
* @access public
*
* @return array Full sync actions of this module.
*/
public function get_full_sync_actions() {
return array( 'jetpack_full_sync_term_relationships' );
}
/**
* Expand the term relationships within a hook before they are serialized and sent to the server.
*
* @access public
*
* @param array $args The hook parameters.
* @return array $args The expanded hook parameters.
*/
public function expand_term_relationships( $args ) {
list( $term_relationships, $previous_end ) = $args;
return array(
'term_relationships' => $term_relationships,
'previous_end' => $previous_end,
);
}
}
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