MinIO: ObjectHashMismatchError when trying to upload object

Commencez par le provider MinIO et le chemin d’upload S3 indiqué dans libcloud/storage/drivers/s3.py, en particulier _put_object et la comparaison du checksum autour de la ligne 922. Exécutez la reproduction pytest liée, test_demo_ObjectHashMismatchError_with_pyfakefs, et comparez les en-têtes de la réponse d’upload avec le hash calculé. Le travail est terminé lorsque l’upload reproductible réussit sans ObjectHashMismatchError incorrect et que les tests pertinents passent.

Summary

The MinIO provider raises an ObjectHashMismatchError when trying to upload an object, for no clear reason
100% reproducible, code to repro the bug is provided

Detailed Information

libcloud: latest stable, 3.3.1
Python: 3.8.10
OS: Ubuntu 20.04

Here you can find a repo to repro the bug, using pytest (Actually there are 2 bugs to report):
https://github.com/Wenzel/libcloud_bug

$ pytest -k test_demo_ObjectHashMismatchError_with_pyfakefs
clean_minio_db = <libcloud.storage.drivers.minio.MinIOStorageDriver object at 0x7f1410f3fdf0>, fs = <pyfakefs.fake_filesystem.FakeFilesystem object at 0x7f141021fa90>

    def test_demo_ObjectHashMismatchError_with_pyfakefs(clean_minio_db, fs):
        # create test file
        test_file = "/file1.txt"
        test_file_data = b"hello"
        with open(test_file, "wb") as f:
            f.write(test_file_data)
        # create container
        driver = clean_minio_db
        container = driver.create_container('test')
        # test
>       driver.upload_object(str(test_file), container, 'test_file')

/home/wenzel/Projets/libcloud_bug/tests/test_demo_bug.py:13: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
/home/wenzel/.cache/pypoetry/virtualenvs/libcloud-bug-IT-EyGKG-py3.8/lib/python3.8/site-packages/libcloud/storage/drivers/s3.py:545: in upload_object
    return self._put_object(container=container, object_name=object_name,
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = <libcloud.storage.drivers.minio.MinIOStorageDriver object at 0x7f1410f3fdf0>, container = <Container: name=test, provider=MinIO Storage Driver>, object_name = 'test_file', method = 'PUT'
query_args = None, extra = {}, file_path = '/file1.txt', stream = None, verify_hash = True, storage_class = None, headers = {'connection': 'close', 'content-type': 'text/plain; charset=utf-8'}

    def _put_object(self, container, object_name, method='PUT',
                    query_args=None, extra=None, file_path=None,
                    stream=None, verify_hash=True, storage_class=None,
                    headers=None):
        headers = headers or {}
        extra = extra or {}
    
        headers.update(self._to_storage_class_headers(storage_class))
    
        content_type = extra.get('content_type', None)
        meta_data = extra.get('meta_data', None)
        acl = extra.get('acl', None)
    
        if meta_data:
            for key, value in list(meta_data.items()):
                key = self.http_vendor_prefix + '-meta-%s' % (key)
                headers[key] = value
    
        if acl:
            headers[self.http_vendor_prefix + '-acl'] = acl
    
        request_path = self._get_object_path(container, object_name)
    
        if query_args:
            request_path = '?'.join((request_path, query_args))
    
        result_dict = self._upload_object(
            object_name=object_name, content_type=content_type,
            request_path=request_path, request_method=method,
            headers=headers, file_path=file_path, stream=stream)
    
        response = result_dict['response']
        bytes_transferred = result_dict['bytes_transferred']
        headers = response.headers
        response = response
        server_hash = headers.get('etag', '').replace('"', '')
        server_side_encryption = headers.get('x-amz-server-side-encryption',
                                             None)
        aws_kms_encryption = (server_side_encryption == 'aws:kms')
        hash_matches = (result_dict['data_hash'] == server_hash)
    
        # NOTE: If AWS KMS server side encryption is enabled, ETag won't
        # contain object MD5 digest so we skip the checksum check
        # See https://docs.aws.amazon.com/AmazonS3/latest/API
        # /RESTCommonResponseHeaders.html
        # and https://github.com/apache/libcloud/issues/1401
        # for details
        if verify_hash and not aws_kms_encryption and not hash_matches:
>           raise ObjectHashMismatchError(
                value='MD5 hash {0} checksum does not match {1}'.format(
                    server_hash, result_dict['data_hash']),
E                   libcloud.storage.types.ObjectHashMismatchError: <ObjectHashMismatchError in <libcloud.storage.drivers.minio.MinIOStorageDriver object at 0x7f1410f3fdf0>, value=MD5 hash  checksum does not match 5d41402abc4b2a76b9719d911017c592, object = test_file>

/home/wenzel/.cache/pypoetry/virtualenvs/libcloud-bug-IT-EyGKG-py3.8/lib/python3.8/site-packages/libcloud/storage/drivers/s3.py:922: ObjectHashMismatchError
------------------------------------------------------------------------------------------- Captured stdout setup -------------------------------------------------------------------------------------------
db2dfd078b96e1b0932dc354926aadb77adba2d8c19b8ccc875e7fe5163e8f46
----------------------------------------------------------------------------------------- Captured stdout teardown ------------------------------------------------------------------------------------------
libcloud_bug_objectmistmatch_miniodb
========================================================================================== short test summary info ==========================================================================================
FAILED tests/test_demo_bug.py::test_demo_ObjectHashMismatchError_with_pyfakefs - libcloud.storage.types.ObjectHashMismatchError: <ObjectHashMismatchError in <libcloud.storage.drivers.minio.MinIOStorageD..

It looks like there is a hash mismatch when upload_object is verifying the hash, but for no clear reason.

Thanks for maintaining libcloud !