id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
30327	Failing collectstatic with ManifestFilesMixin	Gadir Rustamli	Gadir Rustamli	"Collectstatic throws `KeyError: 'ContentLength'` when used with ManifestFileMixin. Below is the custom storage class I've written to upload the files to Google Cloud Storage.

{{{
class CustomStorage(ManifestFilesMixin, S3Boto3Storage):
         pass
}}}

in the settings.py

{{{
    STATICFILES_STORAGE = 'myapp.storage.CustomStorage'
}}}


And here is the stacktrace:

{{{
UserWarning: The default behavior of S3Boto3Storage is insecure and will change in django-storages 2.0. By default files and new buckets are saved with an ACL of 'public-read' (globally publicly readable). Version 2.0 will default to using the bucket's ACL. To opt into the new behavior set AWS_DEFAULT_ACL = None, otherwise to silence this warning explicitly set AWS_DEFAULT_ACL.
  ""The default behavior of S3Boto3Storage is insecure and will change ""
Traceback (most recent call last):
  File ""./manage.py"", line 10, in <module>
    execute_from_command_line(sys.argv)
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/django/core/management/__init__.py"", line 381, in execute_from_command_line
    utility.execute()
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/django/core/management/__init__.py"", line 375, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/django/core/management/base.py"", line 316, in run_from_argv
    self.execute(*args, **cmd_options)
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/django/core/management/base.py"", line 353, in execute
    output = self.handle(*args, **options)
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/django/contrib/staticfiles/management/commands/collectstatic.py"", line 188, in handle
    collected = self.collect()
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/django/contrib/staticfiles/management/commands/collectstatic.py"", line 128, in collect
    for original_path, processed_path, processed in processor:
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/django/contrib/staticfiles/storage.py"", line 402, in post_process
    yield from super().post_process(*args, **kwargs)
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/django/contrib/staticfiles/storage.py"", line 236, in post_process
    for name, hashed_name, processed, _ in self._post_process(paths, adjustable_paths, hashed_files):
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/django/contrib/staticfiles/storage.py"", line 293, in _post_process
    content = pattern.sub(converter, content)
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/django/contrib/staticfiles/storage.py"", line 194, in converter
    force=True, hashed_files=hashed_files,
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/django/contrib/staticfiles/storage.py"", line 131, in _url
    hashed_name = hashed_name_func(*args)
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/django/contrib/staticfiles/storage.py"", line 342, in _stored_name
    cache_name = self.clean_name(self.hashed_name(name))
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/django/contrib/staticfiles/storage.py"", line 99, in hashed_name
    file_hash = self.file_hash(clean_name, content)
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/django/contrib/staticfiles/storage.py"", line 79, in file_hash
    for chunk in content.chunks():
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/django/core/files/base.py"", line 55, in chunks
    self.seek(0)
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/django/core/files/utils.py"", line 20, in <lambda>
    seek = property(lambda self: self.file.seek)
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/storages/backends/s3boto3.py"", line 97, in _get_file
    self.obj.download_fileobj(self._file)
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/boto3/s3/inject.py"", line 760, in object_download_fileobj
    ExtraArgs=ExtraArgs, Callback=Callback, Config=Config)
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/boto3/s3/inject.py"", line 678, in download_fileobj
    return future.result()
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/s3transfer/futures.py"", line 106, in result
    return self._coordinator.result()
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/s3transfer/futures.py"", line 265, in result
    raise self._exception
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/s3transfer/tasks.py"", line 255, in _main
    self._submit(transfer_future=transfer_future, **kwargs)
  File ""/home/ufaz/webapps/ufaz_website/.venv/lib/python3.6/site-packages/s3transfer/download.py"", line 348, in _submit
    response['ContentLength'])
KeyError: 'ContentLength'

}}}


As a reminder. I am using Google Cloud Storage since it is also S3 compatible
"	Bug	closed	contrib.staticfiles	2.2	Normal	invalid	staticfiles versioning		Unreviewed	0	0	0	0	0	0