def get_object_metadata(self,
bucket_name,
object_name,
generation=None,
fields_scope=cloud_api.FieldsScope.NO_ACL):
"""See super class."""
# S3 requires a string, but GCS uses an int for generation.
if generation:
generation = int(generation)
projection = self._GetProjection(
fields_scope, self.messages.StorageObjectsGetRequest)
# TODO(b/160238394) Decrypt metadata fields if necessary.
try:
object_metadata = self.client.objects.Get(
self.messages.StorageObjectsGetRequest(
bucket=bucket_name,
object=object_name,
generation=generation,
projection=projection))
except apitools_exceptions.HttpNotFoundError:
raise cloud_errors.NotFoundError(
'Object not found: {}'.format(storage_url.CloudUrl(
storage_url.ProviderPrefix.GCS, bucket_name, object_name,
generation).url_string)
)
return _object_resource_from_metadata(object_metadata)
def get_object_metadata(self,
bucket_name,
object_name,
generation=None,
fields_scope=None):
"""See super class."""
request = {'Bucket': bucket_name, 'Key': object_name}
# The VersionId keyword argument to head_object is not nullable if it is
# present, so only include it in the function call if it has a value.
if generation is not None:
request['VersionId'] = generation
try:
object_dict = self.client.head_object(**request)
except botocore.exceptions.ClientError as e:
if e.response.get('ResponseMetadata',
{}).get('HTTPStatusCode') == 404:
# Allows custom error handling.
raise errors.NotFoundError('Object not found: {}'.format(
storage_url.CloudUrl(storage_url.ProviderPrefix.S3,
bucket_name, object_name,
generation).url_string))
raise e
# User requested ACL's with FieldsScope.FULL.
if fields_scope is cloud_api.FieldsScope.FULL:
try:
acl_response = self.client.get_object_acl(**request)
acl_response.pop('ResponseMetadata', None)
object_dict['ACL'] = acl_response
except botocore.exceptions.ClientError as error:
object_dict['ACL'] = errors.S3ApiError(error)
return _get_object_resource_from_s3_response(object_dict, bucket_name,
object_name)
def _raise_if_not_found_error(error, resource_name):
if error.response.get('ResponseMetadata', {}).get('HTTPStatusCode') == 404:
# TODO(b/193464904): Remove the hardcoded error message here after
# refactoring the errors module.
raise errors.NotFoundError('{} not found: 404.'.format(resource_name))
def _raise_if_not_found_error(error, resource_name):
if error.response.get('ResponseMetadata', {}).get('HTTPStatusCode') == 404:
raise errors.NotFoundError('Not found: {}'.format(resource_name))
