[PLUGINS] Added UnQueue, a new default plugin which does all actions immediately

lib/queue/queuemanager.php

@@ -59,18 +59,9 @@ abstract class QueueManager extends IoManager
         if (empty(self::$qm)) {
 
             if (Event::handle('StartNewQueueManager', array(&self::$qm))) {
-                $enabled = common_config('queue', 'enabled');
-                $type = common_config('queue', 'subsystem');
-
-                if (!$enabled) {
-                    // does everything immediately
-                    self::$qm = new UnQueueManager();
-                } else {
-                    switch ($type) {
-                     default:
-                        throw new ServerException("No queue manager class for type '$type'");
-                    }
-                }
+                common_log(LOG_ERR, 'Some form of queue manager must be active' .
+                           '(UnQueue does everything immediately and is the default)');
+                throw new ServerException('Some form of queue manager must be active');
             }
         }
 

lib/util/default.php

@@ -361,6 +361,7 @@ $default =
                 'Poll' => [],
                 'SimpleCaptcha' => [],
                 'TagSub' => [],
+                'UnQueue' => [],
                 'WebFinger' => [],
             ],
             'locale_path' => false, // Set to a path to use *instead of* each plugin's own locale subdirectories

plugins/UnQueue/README

@@ -0,0 +1,14 @@
+UnQueuePlugin wraps the UnQueueManager class which is a queue manager that does all work immediately.
+
+Installation
+============
+
+This plugin is enabled by default and cannot be disabled unless another queue manager is in use.
+Disabling is not necessary but recommended in such cases.
+
+Example
+=======
+
+In config.php
+
+addPlugin('UnQueue');

plugins/UnQueue/UnQueuePlugin.php

@@ -0,0 +1,48 @@
+<?php
+// This file is part of GNU social - https://www.gnu.org/software/social
+//
+// GNU social is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// GNU social is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with GNU social.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Immediate action queue
+ *
+ * @package   GNUsocial
+ * @author    Miguel Dantas <biodantasgs@gmail.com>
+ * @copyright 2019 Free Software Foundation, Inc http://www.fsf.org
+ * @license   https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
+ */
+
+defined('GNUSOCIAL') || die();
+
+class UnQueuePlugin extends Plugin
+{
+    const PLUGIN_VERSION = '0.0.1';
+
+    public function onStartNewQueueManager(?QueueManager &$qm)
+    {
+        $qm = new UnQueueManager();
+        return false;
+    }
+
+    public function onPluginVersion(array &$versions): bool
+    {
+        $versions[] = array('name' => 'UnQueue',
+                            'version' => self::PLUGIN_VERSION,
+                            'author' => 'Miguel Dantas',
+                            'description' =>
+                            // TRANS: Plugin description.
+                            _m('Plugin using the database as a backend for GNU social queues'));
+        return true;
+    }
+};