From b1139b473e20b40ca7c7986181a8493c55433852 Mon Sep 17 00:00:00 2001
From: andrei <deffuls@debian-BULLSEYE-live-builder-AMD64>
Date: Thu, 23 Jun 2022 13:48:10 +0300
Subject: [PATCH] Added convert.py for storing interfaces

---
 planetmint/backend/convert.py | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 planetmint/backend/convert.py

diff --git a/planetmint/backend/convert.py b/planetmint/backend/convert.py
new file mode 100644
index 0000000..6ec074f
--- /dev/null
+++ b/planetmint/backend/convert.py
@@ -0,0 +1,26 @@
+# Copyright © 2020 Interplanetary Database Association e.V.,
+# Planetmint and IPDB software contributors.
+# SPDX-License-Identifier: (Apache-2.0 AND CC-BY-4.0)
+# Code is Apache-2.0 and docs are CC-BY-4.0
+
+"""Convert interfaces for backends."""
+
+from functools import singledispatch
+
+
+@singledispatch
+def prepare_asset(connection, transaction_type, transaction_id, filter_operation, asset):
+    """
+    This function is used for preparing assets,
+    before storing them to database.
+    """
+    raise NotImplementedError
+
+
+@singledispatch
+def prepare_metadata(connection, transaction_id, metadata):
+    """
+    This function is used for preparing metadata,
+    before storing them to database.
+    """
+    raise NotImplementedError