Initial commit

config/schema/queue_order.schema.yml

+queue_order.settings:
+  type: config_object
+  label: 'Queue Order config'
+  mapping:
+    order:
+      type: sequence
+      label: 'Queue order'
+      sequence:
+        - type: queue_order.settings.order.[%key]
+queue_order.settings.order.*:
+  type: integer
+  label: 'Weight for % queue'

queue_order.info.yml

+name: Queue order [no UI]
+type: module
+description: "Provide api to control queue order execution"
+package: System utility
+core: 8.x
+dependencies:
+  - drupal:system (>= 8.2.0)

src/Queue/QueueWorkerManager.php

+<?php
+
+namespace Drupal\queue_order\Queue;
+
+use Drupal\Component\Utility\SortArray;
+use Drupal\Core\Queue\QueueWorkerManager as CoreQueueWorkerManager;
+
+/**
+ * Class QueueWorkerManager.
+ *
+ * @package Drupal\queue_order\Queue
+ */
+class QueueWorkerManager extends CoreQueueWorkerManager {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDefinitions() {
+    $definitions = parent::getDefinitions();
+    $weight = \Drupal::config('queue_order.settings')->get('order');
+    $weight = empty($weight) ? [] : $weight;
+    foreach ($definitions as $key => &$definition) {
+      $definition['weight'] = empty($weight[$key]) ? 0 : intval($weight[$key]);
+    }
+    uasort($definitions, [SortArray::class, 'sortByWeightElement']);
+    return $definitions;
+  }
+
+}

src/QueueOrderServiceProvider.php

+<?php
+
+namespace Drupal\queue_order;
+
+use Drupal\Core\DependencyInjection\ContainerBuilder;
+use Drupal\Core\DependencyInjection\ServiceProviderBase;
+use Drupal\queue_order\Queue\QueueWorkerManager;
+
+/**
+ * Class QueueOrderServiceProvider.
+ *
+ * @package Drupal\queue_order
+ */
+class QueueOrderServiceProvider extends ServiceProviderBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function alter(ContainerBuilder $container) {
+    if ($container->has('plugin.manager.queue_worker')) {
+      $container->getDefinition('plugin.manager.queue_worker')
+        ->setClass(QueueWorkerManager::class);
+    }
+  }
+
+}