Files
woocommerce-subscriptions/includes/core/class-wcs-notifications-batch-processor.php
2025-05-21 10:18:23 +00:00

276 lines
9.5 KiB
PHP

<?php
/**
* WooCommerce Subscriptions Notifications Batch Processor.
*
* This batch processor is used to process subscriptions whenever global settings get updated
* (global on/off for notifications or time offset).
*
* It will only process subscriptions whose update time is before the time when the settings got updated.
* To ensure all subscription end up having correct notifications, the hook
* WCS_Action_Scheduler_Customer_Notifications::update_notifications will update any notifications
* whose update time is before the settings got updated. The rest of subscriptions should be updated by this
* batch processor.
*
* In addition to this batch processor which runs ad-hoc, there's also a debug tool to regenerate notifications for
* all subscriptions: WCS_Notifications_Debug_Tool_Processor.
*
* @package WooCommerce Subscriptions
* @category Class
* @since 7.7.0
*/
class WCS_Notifications_Batch_Processor implements WCS_Batch_Processor {
/**
* Get a user-friendly name for this processor.
*
* @return string Name of the processor.
*/
public function get_name(): string {
return 'wcs_notifications_batch_processor';
}
/**
* Get a user-friendly description for this processor.
*
* @return string Description of what this processor does.
*/
public function get_description(): string {
return 'WooCommerce Notifications Batch Processor';
}
/**
* Get the subscription statuses that should be processed.
*
* @return array Subscription statuses that should be processed.
*/
protected function get_subscription_statuses() {
$allowed_statuses = array(
'active',
'pending',
'on-hold',
'pending-cancel',
);
return array_map( 'wcs_sanitize_subscription_status_key', $allowed_statuses );
}
/**
* Get the timestamp of the last time the notification settings were updated.
*
* @return string Datetime of the last time the notification settings were updated.
*/
public function get_notification_settings_update_time() {
$notification_settings_update_timestamp = get_option( 'wcs_notification_settings_update_time', 0 );
if ( 0 === $notification_settings_update_timestamp ) {
return '';
}
$notification_settings_update_time = new DateTime( "@$notification_settings_update_timestamp", new DateTimeZone( 'UTC' ) );
return $notification_settings_update_time->format( 'Y-m-d H:i:s' );
}
/**
* Get the total number of pending items that require processing.
* Once an item is successfully processed by 'process_batch' it shouldn't be included in this count.
*
* Note that once the processor is enqueued the batch processor controller will keep
* invoking `get_next_batch_to_process` and `process_batch` repeatedly until this method returns zero.
*
* Since this batch processor updates only subscriptions older than the settings update,
* it only selects subscriptions updated before the settings update time.
*
* @return int Number of items pending processing.
*/
public function get_total_pending_count(): int {
global $wpdb;
if ( empty( $this->get_notification_settings_update_time() ) ) {
return 0;
}
$allowed_statuses = $this->get_subscription_statuses();
$placeholders = implode( ', ', array_fill( 0, count( $allowed_statuses ), '%s' ) );
if ( wcs_is_custom_order_tables_usage_enabled() ) {
return $wpdb->get_var(
// phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared
// phpcs:disable WordPress.DB.PreparedSQLPlaceholders.ReplacementsWrongNumber
$wpdb->prepare(
"SELECT
COUNT(*)
FROM {$wpdb->prefix}wc_orders
WHERE type='shop_subscription'
AND date_updated_gmt < %s
AND status IN ($placeholders)
",
$this->get_notification_settings_update_time(),
...$allowed_statuses
)
);
} else {
return $wpdb->get_var(
// phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared
// phpcs:disable WordPress.DB.PreparedSQLPlaceholders.ReplacementsWrongNumber
$wpdb->prepare(
"SELECT
COUNT(*)
FROM {$wpdb->prefix}posts
WHERE post_type='shop_subscription'
AND post_modified_gmt < %s
AND post_status IN ($placeholders)
",
$this->get_notification_settings_update_time(),
...$allowed_statuses
)
);
}
}
/**
* Returns the next batch of items that need to be processed.
*
* A batch item can be anything needed to identify the actual processing to be done,
* but whenever possible items should be numbers (e.g. database record ids)
* or at least strings, to ease troubleshooting and logging in case of problems.
*
* The size of the batch returned can be less than $size if there aren't that
* many items pending processing (and it can be zero if there isn't anything to process),
* but the size should always be consistent with what 'get_total_pending_count' returns
* (i.e. the size of the returned batch shouldn't be larger than the pending items count).
*
* @param int $size Maximum size of the batch to be returned.
*
* @return array Batch of items to process, containing $size or less items.
*/
public function get_next_batch_to_process( int $size ): array {
global $wpdb;
if ( empty( $this->get_notification_settings_update_time() ) ) {
return [];
}
$allowed_statuses = $this->get_subscription_statuses();
$placeholders = implode( ', ', array_fill( 0, count( $allowed_statuses ), '%s' ) );
$args = array_merge(
array( $this->get_notification_settings_update_time() ),
$allowed_statuses,
array( $size )
);
if ( wcs_is_custom_order_tables_usage_enabled() ) {
return $wpdb->get_col(
// phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared
// phpcs:disable WordPress.DB.PreparedSQLPlaceholders.ReplacementsWrongNumber
$wpdb->prepare(
"SELECT
id
FROM {$wpdb->prefix}wc_orders
WHERE type='shop_subscription'
AND date_updated_gmt < %s
AND status IN ($placeholders)
ORDER BY id ASC
LIMIT %d",
...$args
)
);
} else {
return $wpdb->get_col(
// phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared
// phpcs:disable WordPress.DB.PreparedSQLPlaceholders.ReplacementsWrongNumber
$wpdb->prepare(
"SELECT
ID
FROM {$wpdb->prefix}posts
WHERE post_type='shop_subscription'
AND post_modified_gmt < %s
AND post_status IN ($placeholders)
ORDER BY ID ASC
LIMIT %d",
...$args
)
);
}
}
/**
* Process data for the supplied batch: update all notifications for given batch of subscriptions.
*
* This method should be prepared to receive items that don't actually need processing
* (because they have been processed before) and ignore them, but if at least
* one of the batch items that actually need processing can't be processed, an exception should be thrown.
*
* Once an item has been processed it shouldn't be counted in 'get_total_pending_count'
* nor included in 'get_next_batch_to_process' anymore (unless something happens that causes it
* to actually require further processing).
*
* @throw \Exception Something went wrong while processing the batch.
*
* @param array $batch Batch to process, as returned by 'get_next_batch_to_process'.
*/
public function process_batch( array $batch ): void {
// Instantiating this again would hook another set of hooks for update_status and update_date. No bueno.
$subscriptions_notifications = WC_Subscriptions_Core_Plugin::instance()->notifications_scheduler;
foreach ( $batch as $subscription_id ) {
$subscription = wcs_get_subscription( $subscription_id );
if ( ! $subscription ) {
continue;
}
if ( WC_Subscriptions_Email_Notifications::notifications_globally_enabled() ) {
$subscriptions_notifications->update_status( $subscription, $subscription->get_status(), null );
} else {
$subscriptions_notifications->unschedule_all_notifications( $subscription );
}
// Update the subscription's update time to mark it as updated.
$subscription->set_date_modified( time() );
$subscription->save();
}
}
/**
* Default (preferred) batch size to pass to 'get_next_batch_to_process'.
* The controller will pass this size unless it's externally configured
* to use a different size.
*
* @return int Default batch size.
*/
public function get_default_batch_size(): int {
return 20;
}
/**
* Start the background process for updating notifications.
*
* @return string Informative string to show after the tool is triggered in UI.
*/
public static function enqueue(): string {
$batch_processor = WCS_Batch_Processing_Controller::instance();
if ( $batch_processor->is_enqueued( self::class ) ) {
return __( 'Background process for updating subscription notifications already started, nothing done.', 'woocommerce-subscriptions' );
}
$batch_processor->enqueue_processor( self::class );
return __( 'Background process for updating subscription notifications started.', 'woocommerce-subscriptions' );
}
/**
* Stop the background process for updating notifications.
*
* @return string Informative string to show after the tool is triggered in UI.
*/
public static function dequeue(): string {
$batch_processor = WCS_Batch_Processing_Controller::instance();
if ( ! $batch_processor->is_enqueued( self::class ) ) {
return __( 'Background process for updating subscription notifications not started, nothing done.', 'woocommerce-subscriptions' );
}
$batch_processor->remove_processor( self::class );
return __( 'Background process for updating subscription notifications stopped.', 'woocommerce-subscriptions' );
}
}