Add support any name for backup file (#91)

CHANGELOG.md

@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fixed UX bug when jobs pagination is reset after changing a job (<https://github.com/cvat-ai/cvat/pull/42>)
 - Progressbars in CLI for file uploading and downloading (<https://github.com/cvat-ai/cvat/pull/46>)
 - `utils/cli` changed to `cvat-cli` package (<https://github.com/cvat-ai/cvat/pull/59>)
+- Support custom file name for backup (<https://github.com/cvat-ai/cvat/pull/91>)
 
 ### Changed
 - Bumped nuclio version to 1.8.14 (<https://github.com/cvat-ai/cvat/pull/29>)

cvat/apps/engine/backup.py

@@ -701,6 +701,8 @@ def _create_backup(db_instance, Exporter, output_path, logger, cache_ttl):
 
 def export(db_instance, request):
     action = request.query_params.get('action', None)
+    filename = request.query_params.get('filename', None)
+
     if action not in (None, 'download'):
         raise serializers.ValidationError(
             "Unexpected action specified for the request")
@@ -745,14 +747,14 @@ def export(db_instance, request):
 
                     timestamp = datetime.strftime(last_project_update_time,
                         "%Y_%m_%d_%H_%M_%S")
-                    filename = "{}_{}_backup_{}{}".format(
+                    filename = filename or "{}_{}_backup_{}{}".format(
                         filename_prefix, db_instance.name, timestamp,
-                        os.path.splitext(file_path)[1])
+                        os.path.splitext(file_path)[1]).lower()
 
                     location = location_conf.get('location')
                     if location == Location.LOCAL:
                         return sendfile(request, file_path, attachment=True,
-                            attachment_filename=filename.lower())
+                            attachment_filename=filename)
                     elif location == Location.CLOUD_STORAGE:
 
                         @validate_bucket_status

cvat/apps/engine/views.py

@@ -487,6 +487,8 @@ class ProjectViewSet(viewsets.ModelViewSet, UploadMixin, AnnotationMixin, Serial
             OpenApiParameter('action', location=OpenApiParameter.QUERY,
                 description='Used to start downloading process after backup file had been created',
                 type=OpenApiTypes.STR, required=False, enum=['download']),
+            OpenApiParameter('filename', description='Backup file name',
+                location=OpenApiParameter.QUERY, type=OpenApiTypes.STR, required=False),
             OpenApiParameter('location', description='Where need to save downloaded backup',
                 location=OpenApiParameter.QUERY, type=OpenApiTypes.STR, required=False,
                 enum=Location.list()),
@@ -707,6 +709,8 @@ class TaskViewSet(UploadMixin, AnnotationMixin, viewsets.ModelViewSet, Serialize
             OpenApiParameter('action', location=OpenApiParameter.QUERY,
                 description='Used to start downloading process after backup file had been created',
                 type=OpenApiTypes.STR, required=False, enum=['download']),
+            OpenApiParameter('filename', description='Backup file name',
+                location=OpenApiParameter.QUERY, type=OpenApiTypes.STR, required=False),
             OpenApiParameter('location', description='Where need to save downloaded backup',
                 location=OpenApiParameter.QUERY, type=OpenApiTypes.STR, required=False,
                 enum=Location.list()),