Commit d2c807e4 authored by Guido Trotter's avatar Guido Trotter
Browse files

Create OS from an InvalidOS error

Add a new FromInvalidOS static function to objects.OS that makes it easy to
create an object representing a broken OS starting from the relevant exception.

Reviewed-By: iustinp
parent 37482e7b
......@@ -597,6 +597,20 @@ class OS(ConfigObject):
def FromInvalidOS(cls, err):
"""Create an OS from an InvalidOS error.
This routine knows how to convert an InvalidOS error to an OS
object representing the broken OS with a meaningful error message.
if not isinstance(err, errors.InvalidOS):
raise errors.ProgrammerError("Trying to initialize an OS from an"
" invalid object of type %s" % type(err))
return cls(name=err.args[0], path=err.args[1], status=err.args[2])
def __nonzero__(self):
return self.status == constants.OS_VALID_STATUS
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