MDL-58590 mobile: Cache mobile-supporting plugins

admin/tool/mobile/classes/api.php

@@ -57,6 +57,13 @@ public static function get_plugins_supporting_mobile() {
         global $CFG;
         require_once($CFG->libdir . '/adminlib.php');
 
+        // Check if we can return this from cache.
+        $cache = \cache::make('tool_mobile', 'plugininfo');
+        $pluginsinfo = $cache->get('mobileplugins');
+        if ($pluginsinfo !== false) {
+            return (array)$pluginsinfo;
+        }
+
         $pluginsinfo = [];
         $plugintypes = core_component::get_plugin_types();
 
@@ -68,7 +75,7 @@ public static function get_plugins_supporting_mobile() {
                 $component = $plugintype . '_' . $plugin;
                 $version = get_component_version($component);
 
-                require_once("$path/db/mobile.php");
+                require("$path/db/mobile.php");
                 foreach ($addons as $addonname => $addoninfo) {
                     $plugininfo = array(
                         'component' => $component,
@@ -91,6 +98,9 @@ public static function get_plugins_supporting_mobile() {
                 }
             }
         }
+
+        $cache->set('mobileplugins', $pluginsinfo);
+
         return $pluginsinfo;
     }
 

admin/tool/mobile/db/caches.php

@@ -0,0 +1,34 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Mobile cache definitions.
+ *
+ * @package    tool_mobile
+ * @copyright  2017 Skylar Kelty <S.Kelty@kent.ac.uk>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+defined('MOODLE_INTERNAL') || die;
+
+$definitions = array(
+    'plugininfo' => array(
+        'mode' => cache_store::MODE_APPLICATION,
+        'simplekeys' => true,
+        'staticacceleration' => true,
+        'staticaccelerationsize' => 1
+    )
+);

admin/tool/mobile/lang/en/tool_mobile.php

@@ -24,6 +24,7 @@
 
 $string['autologinkeygenerationlockout'] = 'Auto-login key generation is blocked because of too many requests within an hour.';
 $string['autologinnotallowedtoadmins'] = 'Auto-login is not allowed for site admins.';
+$string['cachedef_plugininfo'] = 'This stores the list of plugins with mobile addons';
 $string['clickheretolaunchtheapp'] = 'Click here if the app does not open automatically.';
 $string['configmobilecssurl'] = 'A CSS file to customise your mobile app interface.';
 $string['enablesmartappbanners'] = 'Enable Smart App Banners';