def _check_location_uri(context, store_api, store_utils, uri, backend=None):
"""Check if an image location is valid.
:param context: Glance request context
:param store_api: store API module
:param store_utils: store utils module
:param uri: location's uri string
:param backend: A backend name for the store
"""
try:
# NOTE(zhiyan): Some stores return zero when it catch exception
if CONF.enabled_backends:
size_from_backend = store_api.get_size_from_uri_and_backend(
uri, backend, context=context)
else:
size_from_backend = store_api.get_size_from_backend(
uri, context=context)
is_ok = (store_utils.validate_external_location(uri)
and size_from_backend > 0)
except (store.UnknownScheme, store.NotFound, store.BadStoreUri):
is_ok = False
if not is_ok:
reason = _('Invalid location')
raise exception.BadStoreUri(message=reason)
def validate_external_location(self, uri):
if uri and urllib.parse.urlparse(uri).scheme:
return store_utils.validate_external_location(uri)
else:
return True
def validate_external_location(self, uri):
if uri and urlparse.urlparse(uri).scheme:
return store_utils.validate_external_location(uri)
else:
return True