1 files changed, 52 insertions, 0 deletions
diff --git a/library/Icingadb/Hook/IcingadbSupportHook.php b/library/Icingadb/Hook/IcingadbSupportHook.php
new file mode 100644
index 0000000..96cdd19
--- /dev/null
+++ b/library/Icingadb/Hook/IcingadbSupportHook.php
@@ -0,0 +1,52 @@
+<?php
+
+/* Icinga DB Web | (c) 2021 Icinga GmbH | GPLv2 */
+
+namespace Icinga\Module\Icingadb\Hook;
+
+use Icinga\Application\Icinga;
+use Icinga\Authentication\Auth;
+use Icinga\Module\Icingadb\Hook\Common\HookUtils;
+use Icinga\Web\Session;
+
+abstract class IcingadbSupportHook
+{
+    use HookUtils;
+
+    /** @var string key name of preference */
+    const PREFERENCE_NAME = 'icingadb.as_backend';
+
+    /**
+     * Return whether your module supports IcingaDB or not
+     *
+     * @return bool
+     */
+    public function supportsIcingaDb(): bool
+    {
+        return true;
+    }
+
+    /**
+     * Whether icingadb is set as the preferred backend in preferences
+     *
+     * @return bool Return true if icingadb is set as backend, false otherwise
+     */
+    final public static function isIcingaDbSetAsPreferredBackend(): bool
+    {
+        return (bool) Session::getSession()
+            ->getNamespace('icingadb')
+            ->get(self::PREFERENCE_NAME, false);
+    }
+
+    /**
+     * Whether to use icingadb as the backend
+     *
+     * @return bool Returns true if monitoring module is accessible or icingadb is selected as backend, false otherwise.
+     */
+    final public static function useIcingaDbAsBackend(): bool
+    {
+        return ! Icinga::app()->getModuleManager()->hasEnabled('monitoring')
+            || ! Auth::getInstance()->hasPermission('module/monitoring')
+            || self::isIcingaDbSetAsPreferredBackend();
+    }
+}