def get_metadata(self):
        raw_metadata = self.redis.get(self.key)

        if raw_metadata is None:
            self.logger.debug("No metadata found for: {} {}".format(self.name, self.version))
            return None

        metadata = loads(raw_metadata)

        if Version.FILENAME not in metadata:
            self.logger.debug("Incomplete metadata for: {} {}".format(self.name, self.version))
            return None

        return metadata
Identify the id of this instance storage.
dataset/ETHPy150Open jessemyers/cheddar/cheddar/model/distribution.py/Version.get_metadata--crossover with--dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/virt/storage_users.py/register_storage_use