Details
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Bug
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Status: Resolved
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Major
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Resolution: Fixed
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2.4.0
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None
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None
Description
The azure_blobs implementation of upload_object_via_stream(iterator, ...) currently assumes that the passed-in iterator always is a file-like object that implements seek(...) (source).
This means that function crashes when used with arbitrary iterators as returned by iter(...).
Notably, the libcloud integration for django-storages exercises this functionality (source) which makes django-storages + libcloud + Azure Blobs currently unusable. See detailed stacktrace below:
Traceback (most recent call last): File ".../app/manage.py", line 15, in <module> execute_from_command_line(sys.argv) File "...\lib\site-packages\django\core\management\__init__.py", line 381, in execute_from_command_line utility.execute() File "...\lib\site-packages\django\core\management\__init__.py", line 375, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "...\lib\site-packages\django\core\management\base.py", line 316, in run_from_argv self.execute(*args, **cmd_options) File "...\lib\site-packages\django\core\management\base.py", line 353, in execute output = self.handle(*args, **options) File "...\lib\site-packages\django\contrib\staticfiles\management\commands\collectstatic.py", line 188, in handle collected = self.collect() File "...\lib\site-packages\django\contrib\staticfiles\management\commands\collectstatic.py", line 114, in collect handler(path, prefixed_path, storage) File "...\lib\site-packages\django\contrib\staticfiles\management\commands\collectstatic.py", line 353, in copy_file self.storage.save(prefixed_path, source_file) File "...\lib\site-packages\django\core\files\storage.py", line 49, in save return self._save(name, content) File "...\lib\site-packages\storages\backends\apache_libcloud.py", line 157, in _save self.driver.upload_object_via_stream(iter(file), self._get_bucket(), name) File "...\lib\site-packages\libcloud\storage\drivers\azure_blobs.py", line 828, in upload_object_via_stream iterator.seek(0, os.SEEK_END) AttributeError: 'generator' object has no attribute 'seek'
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