fixed 'Trying to recreate service' occuring

the error occured when importing a service set which includes a service
with a changed name but with a guid already

library/Director/Objects/IcingaServiceSet.php

@@ -222,11 +222,28 @@ class IcingaServiceSet extends IcingaObject implements ExportInterface
                         's.*'
                     )->where('service_set_id = ?', $setId);
                     $existingServices = IcingaService::loadAll($db, $sQuery, 'object_name');
+                    $existingServicesGuid = IcingaService::loadAll($db, $sQuery, 'guid');
                     $newServicesGuids = array();
                     foreach ($services as $service) {
                         if (isset($service->fields)) {
                             unset($service->fields);
                         }
+
+                        if (isset($service->guid)) {
+                            $guid = $service->guid;
+                            echo "$service->object_name\n";
+                            if (isset($existingServicesGuid[$guid])) {
+                                $existing = $existingServicesGuid[$guid];
+                                $existing->setProperties((array) $service);
+                                $existing->set('service_set_id', $setId);
+                                if ($existing->hasBeenModified()) {
+                                    $existing->store();
+                                }
+                                unset($existingServicesGuid[$guid]);
+                                continue;
+                            }
+                        }
+
                         $name = $service->object_name;
                         if (isset($existingServices[$name])) {
                             $existing = $existingServices[$name];
@@ -236,11 +253,12 @@ class IcingaServiceSet extends IcingaObject implements ExportInterface
                                 $existing->store();
                             }
                             unset($existingServices[$name]);
-                        } else {
-                            $new = IcingaService::create((array) $service, $db);
-                            $new->set('service_set_id', $setId);
-                            $new->store();
+                            continue;
                         }
+
+                        $new = IcingaService::create((array) $service, $db);
+                        $new->set('service_set_id', $setId);
+                        $new->store();
                     }
                     // remove all services from $existingServices that are not in $services (aka delete services that are not part of the basket import)
                     foreach ($existingServices as $name => $service) {