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# -*- coding: utf-8 -*-
# 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.
import logging
from os_cloud_config._i18n import _
LOG = logging.getLogger(__name__)
class CloudConfigException(Exception):
"""Base os-cloud-config 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.
"""
msg_fmt = _("An unknown exception occurred.")
def __init__(self, message=None, **kwargs):
self.kwargs = kwargs
if not message:
try:
message = self.msg_fmt % kwargs
except Exception:
# kwargs doesn't match a variable in the message
# log the issue and the kwargs
LOG.exception('Exception in string format operation')
for name, value in kwargs.iteritems():
LOG.error("%s: %s" % (name, value))
# at least get the core message out if something happened
message = self.msg_fmt
super(CloudConfigException, self).__init__(message)
class MissingEnvironment(CloudConfigException):
message = "Required environment variables are not set."
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