Saimon/direct io azure blob storage (#340)

Author: saimonation

cterasdk/direct/lib.py

@@ -1,5 +1,6 @@
 import logging
 import asyncio
+import urllib.parse
 
 from ..lib.retries import execute_with_retries
 from .types import Metadata, Block
@@ -72,6 +73,10 @@ async def get_object(client, file_id, chunk):
     raise exception
 
 
+def is_azure_object_storage(chunk):
+    return urllib.parse.urlparse(chunk.url).netloc.endswith('core.windows.net')
+
+
 async def decrypt_object(file_id, encrypted_object, encryption_key, chunk):
     """
     Decrypt Encrypted Object.
@@ -83,7 +88,7 @@ async def decrypt_object(file_id, encrypted_object, encryption_key, chunk):
     :rtype: bytes
     """
     try:
-        return decrypt_block(encrypted_object, encryption_key)
+        return decrypt_block(encrypted_object[16:] if is_azure_object_storage(chunk) else encrypted_object, encryption_key)
     except DirectIOError:
         logger.error('Failed to decrypt block.')
         raise DecryptBlockError(file_id, chunk)

docs/source/UserGuides/Miscellaneous/Changelog.rst

@@ -1,6 +1,15 @@
 Changelog
 =========
 
+2.20.30
+-------
+
+Bug Fixes
+^^^^^^^^^
+* Update documentation to require :py:class:`cterasdk.core.types.UserAccount` in :py:class:`cterasdk.core.types.CloudFSFolderFindingHelper`
+* Support downloading files from Azure Blob Storage via CTERA Direct I/O.
+
+
 2.20.28
 -------