Rewrote storage services to implement new interface

middleware/app_be/services/StorageServiceInterface.py

@@ -0,0 +1,53 @@
+class StorageServiceInterface:
+
+    name = "StorageServiceInterface"
+
+    @staticmethod
+    def check() -> bool:
+        pass
+
+    @staticmethod
+    def create_file(filename: str, file: bytes) -> bool:
+        """Create / save (or overwrite) an file on the storage.
+
+        :param filename: filename
+        :param file: bytes representation of the file
+        :return: Whether file was successfully uploaded
+        """
+        pass
+
+    @staticmethod
+    def read_file(filename: str) -> bytes:
+        """Read  file on the storage.
+
+        :param filename: filename
+        :return: bytes representation of the file or None on error
+        """
+        pass
+
+    @staticmethod
+    def update_file(filename: str, file: bytes) -> bool:
+        """Update (currently: overwrite) an file on the storage.
+
+        :param filename: filename of the file
+        :param file: bytes representation of the file
+        :return: Whether file was successfully uploaded
+        """
+        pass
+
+    @staticmethod
+    def delete_file(filename: str) -> bool:
+        """Delete an file from the storage.
+
+        :param filename: filename of the file
+        :return: Whether file was successfully deleted
+        """
+        pass
+
+    @staticmethod
+    def delete_all() -> bool:
+        """Delete every file from the storage.
+
+        :return: Whether the storage was successfully emptied
+        """
+        pass

middleware/app_be/services/dropboxservice.py

@@ -2,8 +2,12 @@ import requests
 from django.conf import settings
 import dropbox
 
+from app_be.services.StorageServiceInterface import StorageServiceInterface
 
-class DropboxService:
+
+class DropboxService(StorageServiceInterface):
+
+    name = "Dropbox"
 
     @staticmethod
     def check() -> bool:
@@ -17,7 +21,6 @@ class DropboxService:
             return False
         return True
 
-
     @staticmethod
     def create_file(filename: str, file: bytes) -> bool:
         """Create / save (or overwrite) an file on the dropbox storage.
@@ -89,4 +92,4 @@ class DropboxService:
         except dropbox.exceptions.ApiError as e:
             print(e)
             return False
-        return True
+        return True

middleware/app_be/services/minioservice.py

@@ -6,7 +6,12 @@ import xml.etree.ElementTree as ET
 import requests
 from django.conf import settings
 
-class MinioService:
+from app_be.services.StorageServiceInterface import StorageServiceInterface
+
+
+class MinioService(StorageServiceInterface):
+
+    name = "MinIO"
 
     @staticmethod
     def check() -> bool: