/**
* Create a post object for a given event
*
* Can't call `wp_insert_post()` because `wp_unique_post_slug()` breaks the plugin's expectations
* Also doesn't call `wp_insert_post()` because this function is needed before post types and capabilities are ready.
*/
public function create_or_update_job($timestamp, $action, $args, $update_id = null)
{
// Limit how many events to insert at once
if (!Lock::check_lock(self::LOCK, JOB_CREATION_CONCURRENCY_LIMIT)) {
return false;
}
global $wpdb;
// Build minimum information needed to create a post
$instance = md5(serialize($args['args']));
$job_post = array('post_title' => $this->event_title($timestamp, $action, $instance), 'post_name' => $this->event_name($timestamp, $action, $instance), 'post_content_filtered' => maybe_serialize(array('action' => $action, 'instance' => $instance, 'args' => $args)), 'post_date' => date('Y-m-d H:i:s', $timestamp), 'post_date_gmt' => date('Y-m-d H:i:s', $timestamp), 'post_modified' => current_time('mysql'), 'post_modified_gmt' => current_time('mysql', true), 'post_type' => self::POST_TYPE, 'post_status' => self::POST_STATUS_PENDING, 'post_author' => 0, 'post_parent' => 0, 'comment_status' => 'closed', 'ping_status' => 'closed');
// Some sanitization in place of `sanitize_post()`, which we can't use this early
foreach (array('post_title', 'post_name', 'post_content_filtered') as $field) {
$job_post[$field] = sanitize_text_field($job_post[$field]);
}
// Duplicate some processing performed in `wp_insert_post()`
$charset = $wpdb->get_col_charset($wpdb->posts, 'post_title');
if ('utf8' === $charset) {
$job_post['post_title'] = wp_encode_emoji($job_post['post_title']);
}
$job_post = wp_unslash($job_post);
// Set this so it isn't empty, even though it serves us no purpose
$job_post['guid'] = esc_url(add_query_arg(self::POST_TYPE, $job_post['post_name'], home_url('/')));
// Create the post, or update an existing entry to run again in the future
if (is_int($update_id) && $update_id > 0) {
$inserted = $wpdb->update($wpdb->posts, $job_post, array('ID' => $update_id));
$this->posts_to_clean[] = $update_id;
} else {
$inserted = $wpdb->insert($wpdb->posts, $job_post);
}
// Clear caches for new posts once the post type is registered
if ($inserted) {
$this->posts_to_clean[] = $wpdb->insert_id;
}
// Delete internal cache
wp_cache_delete(self::CACHE_KEY);
// Allow more events to be created
Lock::free_lock(self::LOCK);
}
/**
* Are resources available to run this event?
*
* @param $event array Event data
*
* @return bool
*/
private function can_run_event($event)
{
// Limit to one concurrent execution of a specific action
if (!Lock::check_lock($this->get_lock_key_for_event_action($event), 1, JOB_LOCK_EXPIRY_IN_MINUTES * \MINUTE_IN_SECONDS)) {
return false;
}
// Internal Events aren't subject to the global lock
if (is_internal_event($event['action'])) {
return true;
}
// Check if any resources are available to execute this job
// If not, the indivdual-event lock must be freed, otherwise it's deadlocked until it times out
if (!Lock::check_lock(self::LOCK, JOB_CONCURRENCY_LIMIT)) {
$this->reset_event_lock($event);
return false;
}
// Let's go!
return true;
}
