n_id Action ID. * @param Exception $e Exception instance. * @param string $context Execution context. * @param bool $valid_action If the action is valid. * * @return void */ private function handle_action_error( $action_id, $e, $context, $valid_action ) { if ( $valid_action ) { $this->store->mark_failure( $action_id ); /** * Runs when action execution fails. * * @param int $action_id Action ID. * @param Exception $e Exception instance. * @param string $context Execution context. */ do_action( 'action_scheduler_failed_execution', $action_id, $e, $context ); } else { /** * Runs when action validation fails. * * @param int $action_id Action ID. * @param Exception $e Exception instance. * @param string $context Execution context. */ do_action( 'action_scheduler_failed_validation', $action_id, $e, $context ); } } /** * Schedule the next instance of the action if necessary. * * @param ActionScheduler_Action $action Action. * @param int $action_id Action ID. */ protected function schedule_next_instance( ActionScheduler_Action $action, $action_id ) { // If a recurring action has been consistently failing, we may wish to stop rescheduling it. if ( ActionScheduler_Store::STATUS_FAILED === $this->store->get_status( $action_id ) && $this->recurring_action_is_consistently_failing( $action, $action_id ) ) { ActionScheduler_Logger::instance()->log( $action_id, __( 'This action appears to be consistently failing. A new instance will not be scheduled.', 'action-scheduler' ) ); return; } try { ActionScheduler::factory()->repeat( $action ); } catch ( Exception $e ) { do_action( 'action_scheduler_failed_to_schedule_next_instance', $action_id, $e, $action ); } } /** * Determine if the specified recurring action has been consistently failing. * * @param ActionScheduler_Action $action The recurring action to be rescheduled. * @param int $action_id The ID of the recurring action. * * @return bool */ private function recurring_action_is_consistently_failing( ActionScheduler_Action $action, $action_id ) { /** * Controls the failure threshold for recurring actions. * * Before rescheduling a recurring action, we look at its status. If it failed, we then check if all of the most * recent actions (upto the threshold set by this filter) sharing the same hook have also failed: if they have, * that is considered consistent failure and a new instance of the action will not be scheduled. * * @param int $failure_threshold Number of actions of the same hook to examine for failure. Defaults to 5. */ $consistent_failure_threshold = (int) apply_filters( 'action_scheduler_recurring_action_failure_threshold', 5 ); // This query should find the earliest *failing* action (for the hook we are interested in) within our threshold. $query_args = array( 'hook' => $action->get_hook(), 'status' => ActionScheduler_Store::STATUS_FAILED, 'date' => date_create( 'now', timezone_open( 'UTC' ) )->format( 'Y-m-d H:i:s' ), 'date_compare' => '<', 'per_page' => 1, 'offset' => $consistent_failure_threshold - 1 ); $first_failing_action_id = $this->store->query_actions( $query_args ); // If we didn't retrieve an action ID, then there haven't been enough failures for us to worry about. if ( empty( $first_failing_action_id ) ) { return false; } // Now let's fetch the first action (having the same hook) of *any status* within the same window. unset( $query_args['status'] ); $first_action_id_with_the_same_hook = $this->store->query_actions( $query_args ); /** * If a recurring action is assessed as consistently failing, it will not be rescheduled. This hook provides a * way to observe and optionally override that assessment. * * @param bool $is_consistently_failing If the action is considered to be consistently failing. * @param ActionScheduler_Action $action The action being assessed. */ return (bool) apply_filters( 'action_scheduler_recurring_action_is_consistently_failing', $first_action_id_with_the_same_hook === $first_failing_action_id, $action ); } /** * Run the queue cleaner. * * @author Jeremy Pry */ protected function run_cleanup() { $this->cleaner->clean( 10 * $this->get_time_limit() ); } /** * Get the number of concurrent batches a runner allows. * * @return int */ public function get_allowed_concurrent_batches() { return apply_filters( 'action_scheduler_queue_runner_concurrent_batches', 1 ); } /** * Check if the number of allowed concurrent batches is met or exceeded. * * @return bool */ public function has_maximum_concurrent_batches() { return $this->store->get_claim_count() >= $this->get_allowed_concurrent_batches(); } /** * Get the maximum number of seconds a batch can run for. * * @return int The number of seconds. */ protected function get_time_limit() { $time_limit = 30; // Apply deprecated filter from deprecated get_maximum_execution_time() method. if ( has_filter( 'action_scheduler_maximum_execution_time' ) ) { _deprecated_function( 'action_scheduler_maximum_execution_time', '2.1.1', 'action_scheduler_queue_runner_time_limit' ); $time_limit = apply_filters( 'action_scheduler_maximum_execution_time', $time_limit ); } return absint( apply_filters( 'action_scheduler_queue_runner_time_limit', $time_limit ) ); } /** * Get the number of seconds the process has been running. * * @return int The number of seconds. */ protected function get_execution_time() { $execution_time = microtime( true ) - $this->created_time; // Get the CPU time if the hosting environment uses it rather than wall-clock time to calculate a process's execution time. if ( function_exists( 'getrusage' ) && apply_filters( 'action_scheduler_use_cpu_execution_time', defined( 'PANTHEON_ENVIRONMENT' ) ) ) { $resource_usages = getrusage(); if ( isset( $resource_usages['ru_stime.tv_usec'], $resource_usages['ru_stime.tv_usec'] ) ) { $execution_time = $resource_usages['ru_stime.tv_sec'] + ( $resource_usages['ru_stime.tv_usec'] / 1000000 ); } } return $execution_time; } /** * Check if the host's max execution time is (likely) to be exceeded if processing more actions. * * @param int $processed_actions The number of actions processed so far - used to determine the likelihood of exceeding the time limit if processing another action. * @return bool */ protected function time_likely_to_be_exceeded( $processed_actions ) { $execution_time = $this->get_execution_time(); $max_execution_time = $this->get_time_limit(); // Safety against division by zero errors. if ( 0 === $processed_actions ) { return $execution_time >= $max_execution_time; } $time_per_action = $execution_time / $processed_actions; $estimated_time = $execution_time + ( $time_per_action * 3 ); $likely_to_be_exceeded = $estimated_time > $max_execution_time; return apply_filters( 'action_scheduler_maximum_execution_time_likely_to_be_exceeded', $likely_to_be_exceeded, $this, $processed_actions, $execution_time, $max_execution_time ); } /** * Get memory limit * * Based on WP_Background_Process::get_memory_limit() * * @return int */ protected function get_memory_limit() { if ( function_exists( 'ini_get' ) ) { $memory_limit = ini_get( 'memory_limit' ); } else { $memory_limit = '128M'; // Sensible default, and minimum required by WooCommerce. } if ( ! $memory_limit || -1 === $memory_limit || '-1' === $memory_limit ) { // Unlimited, set to 32GB. $memory_limit = '32G'; } return ActionScheduler_Compatibility::convert_hr_to_bytes( $memory_limit ); } /** * Memory exceeded * * Ensures the batch process never exceeds 90% of the maximum WordPress memory. * * Based on WP_Background_Process::memory_exceeded() * * @return bool */ protected function memory_exceeded() { $memory_limit = $this->get_memory_limit() * 0.90; $current_memory = memory_get_usage( true ); $memory_exceeded = $current_memory >= $memory_limit; return apply_filters( 'action_scheduler_memory_exceeded', $memory_exceeded, $this ); } /** * See if the batch limits have been exceeded, which is when memory usage is almost at * the maximum limit, or the time to process more actions will exceed the max time limit. * * Based on WC_Background_Process::batch_limits_exceeded() * * @param int $processed_actions The number of actions processed so far - used to determine the likelihood of exceeding the time limit if processing another action. * @return bool */ protected function batch_limits_exceeded( $processed_actions ) { return $this->memory_exceeded() || $this->time_likely_to_be_exceeded( $processed_actions ); } /** * Process actions in the queue. * * @author Jeremy Pry * @param string $context Optional identifier for the context in which this action is being processed, e.g. 'WP CLI' or 'WP Cron' * Generally, this should be capitalised and not localised as it's a proper noun. * @return int The number of actions processed. */ abstract public function run( $context = '' ); }