Sync: allow to remove objects

library/Director/Import/Sync.php

@@ -264,7 +264,7 @@ class Sync
                 }
 
                 if (! $found) {
-                    // TODO: temporarily disabled, "mark" them: $object->delete();
+                    $object->markForRemoval();
                 }
             }
 
@@ -298,6 +298,11 @@ class Sync
                 }
                 continue;
             }
+            if ($object->shouldBeRemoved()) {
+                $object->delete($db);
+                continue;
+            }
+
             if ($object->hasBeenModified()) {
                 $object->store($db);
             }

library/Director/Objects/IcingaObject.php

@@ -51,6 +51,8 @@ abstract class IcingaObject extends DbObject implements IcingaConfigRenderer
 
     private $arguments;
 
+    private $shouldBeRemoved = false;
+
     public function propertyIsBoolean($property)
     {
         return array_key_exists($property, $this->booleans);
@@ -191,6 +193,17 @@ abstract class IcingaObject extends DbObject implements IcingaConfigRenderer
         return parent::set($key, $value);
     }
 
+    public function markForRemoval($remove = true)
+    {
+        $this->shouldBeRemoved = $remove;
+        return $this;
+    }
+
+    public function shouldBeRemoved()
+    {
+        return $this->shouldBeRemoved;
+    }
+
     public function groups()
     {
         $this->assertGroupsSupport();