Commit 162c7f55 by Őry Máté

vm: rewrite Instance's nested exception classes

to support HumanReadableException
parent 0dddcecb
......@@ -41,7 +41,7 @@ from model_utils.models import TimeStampedModel, StatusModel
from taggit.managers import TaggableManager
from acl.models import AclBase
from common.models import create_readable
from common.models import create_readable, HumanReadableException
from common.operations import OperatedMixin
from ..tasks import vm_tasks, agent_tasks
from .activity import (ActivityInProgressError, instance_activity,
......@@ -276,28 +276,26 @@ class Instance(AclBase, VirtualMachineDescModel, StatusModel, OperatedMixin,
verbose_name = _('instance')
verbose_name_plural = _('instances')
class InstanceDestroyedError(Exception):
class InstanceError(HumanReadableException):
def __init__(self, instance, message=None):
if message is None:
message = ("The instance (%s) has already been destroyed."
% instance)
def __init__(self, instance, params=None, level=None, **kwargs):
kwargs.update(params or {})
self.instance = kwargs["instance"] = instance
super(Instance.InstanceError, self).__init__(
level, self.message, self.message, kwargs)
Exception.__init__(self, message)
class InstanceDestroyedError(InstanceError):
message = ugettext_noop(
"Instance %(instance)s has already been destroyed.")
self.instance = instance
class WrongStateError(InstanceError):
message = ugettext_noop(
"Current state (%(state)s) of instance %(instance)s is "
"inappropriate for the invoked operation.")
class WrongStateError(Exception):
def __init__(self, instance, message=None):
if message is None:
message = ("The instance's current state (%s) is "
"inappropriate for the invoked operation."
% instance.status)
Exception.__init__(self, message)
self.instance = instance
def __init__(self, instance, params=None, **kwargs):
super(Instance.WrongStateError, self).__init__(
instance, params, state=instance.status)
def __unicode__(self):
parts = (, "(" + str( + ")")
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