--- /dev/null
+<?php
+
+use Drush\Log\LogLevel;
+
+/**
+ * Implements hook_drush_help().
+ */
+function queue_drush_help($section) {
+ switch ($section) {
+ case 'drush:queue-run':
+ return dt('Run Drupal queue workers. As opposed to "drush cron" that can only be run one at a time on a single site, "drush queue-run" can be invoked as many times as the server load allows.');
+ }
+}
+
+/**
+ * Implements hook_drush_command().
+ */
+function queue_drush_command() {
+ $items['queue-run'] = array(
+ 'description' => 'Run a specific queue by name',
+ 'arguments' => array(
+ 'queue_name' => 'The name of the queue to run, as defined in either hook_queue_info or hook_cron_queue_info.',
+ ),
+ 'required-arguments' => TRUE,
+ 'options' => array(
+ 'time-limit' => 'The maximum number of seconds allowed to run the queue',
+ ),
+ );
+ $items['queue-list'] = array(
+ 'description' => 'Returns a list of all defined queues',
+ 'outputformat' => array(
+ 'default' => 'table',
+ 'pipe-format' => 'csv',
+ 'field-labels' => array(
+ 'queue' => 'Queue',
+ 'items' => 'Items',
+ 'class' => 'Class',
+ ),
+ 'ini-item' => 'items',
+ 'table-metadata' => array(
+ 'key-value-item' => 'items',
+ ),
+ 'output-data-type' => 'format-table',
+ ),
+ );
+
+ return $items;
+}
+
+/**
+ * Validation callback for drush queue-run.
+ */
+function drush_queue_run_validate($queue_name) {
+ try {
+ $queue = drush_queue_get_class();
+ $queue->getInfo($queue_name);
+ }
+ catch (\Drush\Queue\QueueException $exception) {
+ return drush_set_error('DRUSH_QUEUE_RUN_VALIDATION_ERROR', $exception->getMessage());
+ }
+}
+
+/**
+ * Return the appropriate queue class.
+ */
+function drush_queue_get_class() {
+ return drush_get_class('Drush\Queue\Queue');
+}
+
+/**
+ * Command callback for drush queue-run.
+ *
+ * Queue runner that is compatible with queues declared using both
+ * hook_queue_info() and hook_cron_queue_info().
+ *
+ * @param $queue_name
+ * Arbitrary string. The name of the queue to work with.
+ */
+function drush_queue_run($queue_name) {
+ $queue = drush_queue_get_class();
+ $time_limit = (int) drush_get_option('time-limit');
+ $start = microtime(TRUE);
+ $count = $queue->run($queue_name, $time_limit);
+ $elapsed = microtime(TRUE) - $start;
+ drush_log(dt('Processed @count items from the @name queue in @elapsed sec.', array('@count' => $count, '@name' => $queue_name, '@elapsed' => round($elapsed, 2))), drush_get_error() ? LogLevel::WARNING : LogLevel::OK);
+}
+
+/**
+ * Command callback for drush queue-list.
+ */
+function drush_queue_list() {
+ $queue = drush_queue_get_class();
+ return $queue->listQueues();
+}
+