def version_select(*args, **kwargs):
"""Select and call the matching version of the specified method.
Look for the method which matches the name supplied and version
constraints and calls it with the supplied arguments.
:returns: Returns the result of the method called
:raises: VersionNotFoundForAPIMethod if there is no method which
matches the name and version constraints
"""
# The first arg to all versioned methods is always the request
# object. The version for the request is attached to the
# request object
if len(args) == 0:
version_request = kwargs['req'].api_version_request
else:
version_request = args[0].api_version_request
func_list = self.versioned_methods[key]
for func in func_list:
if version_request.matches_versioned_method(func):
# Update the version_select wrapper function so
# other decorator attributes like wsgi.response
# are still respected.
functools.update_wrapper(version_select, func.func)
return func.func(self, *args, **kwargs)
# No version match
raise exception.VersionNotFoundForAPIMethod(
version=version_request)
def extension2(req, resp_obj):
raise exception.VersionNotFoundForAPIMethod(version='fake_version')
