os-xenapi/os_xenapi/client/exception.py

56 lines
1.8 KiB
Python

# Copyright 2013 OpenStack Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from os_xenapi.client.i18n import _
class OsXenApiException(Exception):
"""Base OsXenapi Exception
To correctly use this class, inherit from it and define
a 'msg_fmt' property. That msg_fmt will get printf'd
with the keyword arguments provided to the constructor.
"""
msg_fmt = _("An unknown exception occurred.")
code = 500
def __init__(self, message=None, **kwargs):
self.kwargs = kwargs
if 'code' not in self.kwargs:
try:
self.kwargs['code'] = self.code
except AttributeError:
pass
if not message:
message = self.msg_fmt % kwargs
self.message = message
super(OsXenApiException, self).__init__(message)
def format_message(self):
# NOTE(mrodden): use the first argument to the python Exception object
# which should be our full NovaException message, (see __init__)
return self.args[0]
class PluginRetriesExceeded(OsXenApiException):
msg_fmt = _("Number of retries to plugin (%(num_retries)d) exceeded.")
class SessionLoginTimeout(OsXenApiException):
msg_fmt = _("Unable to log in to XenAPI (is the Dom0 disk full?)")