renamed module

shared/datastore/put.py

@@ -0,0 +1,39 @@
+"""Definition of put function."""
+
+from __future__ import annotations
+
+import logging
+import os
+from hashlib import md5
+from io import BytesIO
+
+from minio import Minio
+
+
+def put(
+    client: Minio,
+    buffer: BytesIO,
+) -> str:
+    """Put buffer in bucket in MinIO and return MD5 checksum as object name."""
+    assert isinstance(client, Minio)
+    assert isinstance(buffer, BytesIO)
+    bucket_name = os.getenv('MINIO_BUCKET_NAME', default='')
+    assert len(bucket_name) > 0
+    # get md5 of image
+    checksum = md5(buffer.getbuffer()).hexdigest()
+    # prepare for saving
+    num_bytes = buffer.tell()
+    buffer.seek(0)
+    # send data to bucket
+    try:
+        client.put_object(
+            bucket_name=bucket_name,
+            object_name=checksum,
+            length=num_bytes,
+            data=buffer,
+        )
+    except Exception as exc:
+        logging.error('failed saving data to MinIO')
+        raise exc
+    logging.debug('saved data to %s', checksum)
+    return checksum