monitoring/commands: Add (ENABLE|DISABLE)_NOTIFICATIONS/DISABLE_NOTIFICATIONS_EXPIRE_TIME commands

`ToggleNotifications' is the command object for enabling/disabling host and service notifications on an Icinga instance with an optional expire time for disabling notifications.

refs #6593

modules/monitoring/library/Monitoring/Command/Instance/ToggleNotifications.php

@@ -0,0 +1,54 @@
+<?php
+// {{{ICINGA_LICENSE_HEADER}}}
+// {{{ICINGA_LICENSE_HEADER}}}
+
+namespace Icinga\Module\Monitoring\Command\Instance;
+
+use Icinga\Module\Monitoring\Command\Common\ToggleFeature;
+
+/**
+ * Enable/disable host and service notifications on an Icinga instance
+ */
+class ToggleNotifications extends ToggleFeature
+{
+    /**
+     * The time when notifications should be re-enabled after disabling
+     *
+     * @var int|null Unix timestamp
+     */
+    protected $expireTime;
+
+    /**
+     * Disable notifications with optional expire time
+     *
+     * @param   int|null $expireTime The Unix timestamp when notifications should be re-enabled after disabling
+     *
+     * @return  $this
+     */
+    public function disable($expireTime = null)
+    {
+        $this->expireTime = $expireTime !== null ? (int) $expireTime : null;
+        return parent::disable();
+    }
+
+    /**
+     * (non-PHPDoc)
+     * @see \Icinga\Module\Monitoring\Command\IcingaCommand::getCommandString() For the method documentation.
+     */
+    public function getCommandString()
+    {
+        if ($this->enable === true) {
+            return 'ENABLE_NOTIFICATIONS';
+        }
+        if ($this->expireTime !== null) {
+            return sprintf(
+                '%s;%u;%u',
+                'DISABLE_NOTIFICATIONS_EXPIRE_TIME',
+                time(),  // Schedule time. According to the Icinga documentation schedule time has no effect currently
+                         // and should be set to the current timestamp.
+                $this->expireTime
+            );
+        }
+        return 'DISABLE_NOTIFICATIONS';
+    }
+}