56 lines
1.9 KiB
Python
56 lines
1.9 KiB
Python
# Copyright (c) 2017 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.
|
|
|
|
|
|
class OvsdbAppException(RuntimeError):
|
|
"""Base OvsdbApp Exception.
|
|
|
|
To correctly use this class, inherit from it and define
|
|
a 'message' property. That message will get printf'd
|
|
with the keyword arguments provided to the constructor.
|
|
"""
|
|
message = "An unknown exception occurred."
|
|
|
|
def __init__(self, **kwargs):
|
|
try:
|
|
super().__init__(self.message % kwargs)
|
|
self.msg = self.message % kwargs
|
|
except Exception:
|
|
if self.use_fatal_exceptions():
|
|
raise
|
|
# at least get the core message out if something happened
|
|
super().__init__(self.message)
|
|
|
|
def __str__(self):
|
|
return self.msg
|
|
|
|
def use_fatal_exceptions(self):
|
|
"""Is the instance using fatal exceptions.
|
|
|
|
:returns: Always returns False.
|
|
"""
|
|
return False
|
|
|
|
|
|
class TimeoutException(OvsdbAppException):
|
|
message = ("Commands %(commands)s exceeded timeout %(timeout)d seconds, "
|
|
"cause: %(cause)s")
|
|
|
|
|
|
class OvsdbConnectionUnavailable(OvsdbAppException):
|
|
message = ("OVS database connection to %(db_schema)s failed with error: "
|
|
"'%(error)s'. Verify that OVS and related services are "
|
|
"available and that the relevant configuration options "
|
|
"are correct.")
|