def obj_class_from_name(cls, objname, objver):
"""Returns a class from the registry based on a name and version."""
if objname not in cls._obj_classes:
LOG.error(_('Unable to instantiate unregistered object type '
'%(objtype)s') % dict(objtype=objname))
raise exception.UnsupportedObjectError(objtype=objname)
latest = None
compatible_match = None
for objclass in cls._obj_classes[objname]:
if objclass.VERSION == objver:
return objclass
version_bits = tuple([int(x) for x in objclass.VERSION.split(".")])
if latest is None:
latest = version_bits
elif latest < version_bits:
latest = version_bits
if versionutils.is_compatible(objver, objclass.VERSION):
compatible_match = objclass
if compatible_match:
return compatible_match
latest_ver = '%i.%i' % latest
raise exception.IncompatibleObjectVersion(objname=objname,
objver=objver,
supported=latest_ver)
def version_is_compatible(imp_version, version):
"""Determine whether versions are compatible.
:param imp_version: The version implemented
:param version: The version requested by an incoming message.
"""
return versionutils.is_compatible(version, imp_version)
def obj_class_from_name(cls, objname, objver):
"""Returns a class from the registry based on a name and version."""
if objname not in cls._obj_classes:
LOG.error(_LE('Unable to instantiate unregistered object type '
'%(objtype)s'), dict(objtype=objname))
raise exception.UnsupportedObjectError(objtype=objname)
latest = None
compatible_match = None
for objclass in cls._obj_classes[objname]:
if objclass.VERSION == objver:
return objclass
version_bits = tuple([int(x) for x in objclass.VERSION.split(".")])
if latest is None:
latest = version_bits
elif latest < version_bits:
latest = version_bits
if versionutils.is_compatible(objver, objclass.VERSION):
compatible_match = objclass
if compatible_match:
return compatible_match
latest_ver = '%i.%i' % latest
raise exception.IncompatibleObjectVersion(objname=objname,
objver=objver,
supported=latest_ver)
def version_is_compatible(imp_version, version):
"""Determine whether versions are compatible.
:param imp_version: The version implemented
:param version: The version requested by an incoming message.
"""
return versionutils.is_compatible(version, imp_version)