[REF] deal with stream on base_attachment_object_storage

Author: jjscarafia

attachment_s3/__init__.py

@@ -1,2 +1 @@
-
 from . import models

attachment_s3/models/ir_binary.py

@@ -1 +1,25 @@
 from . import models
+from odoo.http import Stream
+
+
+old_from_attachment = Stream.from_attachment
+
+
+@classmethod
+def from_attachment(cls, attachment):
+    if attachment.store_fname and attachment._is_file_from_a_store(attachment.store_fname):
+        self = cls(
+            mimetype=attachment.mimetype,
+            download_name=attachment.name,
+            conditional=True,
+            etag=attachment.checksum,
+        )
+        self.type = 'data'
+        self.data = attachment.raw
+        self.last_modified = attachment['__last_update']
+        self.size = len(self.data)
+        return self
+    return old_from_attachment(attachment)
+
+
+Stream.from_attachment = from_attachment