def block_device_mapping_get_all_by_instance(self,
context,
instance,
legacy=True):
instance_p = jsonutils.to_primitive(instance)
if self.client.can_send_version('1.51'):
version = '1.51'
kwargs = {'legacy': legacy}
elif legacy:
# If the remote side is >= 1.51, it defaults to legacy=True.
# If it's older, it only understands the legacy format.
version = '1.13'
kwargs = {}
else:
# If we require new style data, but can't ask for it, then we must
# fail here.
raise messaging.RPCVersionCapError(
vesion='1.51', version_cap=self.client.version_cap)
cctxt = self.client.prepare(version=version)
return cctxt.call(context,
'block_device_mapping_get_all_by_instance',
instance=instance_p,
**kwargs)
def _check_version_cap(self, version):
client = rpc.get_client(self.target, version_cap=self.version_cap)
if not client.can_send_version(version):
raise messaging.RPCVersionCapError(version=version,
version_cap=self.version_cap)
