/usr/lib/python3/dist-packages/ironic_lib/exception.py is in python3-ironic-lib 2.12.0-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
# 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.
"""Ironic base exception handling.
Includes decorator for re-raising Ironic-type exceptions.
SHOULD include dedicated exception logging.
"""
import logging
from oslo_config import cfg
from oslo_utils import excutils
import six
from ironic_lib.common.i18n import _
LOG = logging.getLogger(__name__)
exc_log_opts = [
cfg.BoolOpt('fatal_exception_format_errors',
default=False,
help='Make exception message format errors fatal.',
deprecated_group='DEFAULT'),
]
CONF = cfg.CONF
CONF.register_opts(exc_log_opts, group='ironic_lib')
class IronicException(Exception):
"""Base Ironic 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.")
code = 500
headers = {}
safe = False
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:
try:
message = self.message % kwargs
except Exception:
with excutils.save_and_reraise_exception() as ctxt:
# kwargs doesn't match a variable in the message
# log the issue and the kwargs
prs = ', '.join('%s=%s' % pair for pair in kwargs.items())
LOG.exception('Exception in string format operation '
'(arguments %s)', prs)
if not CONF.ironic_lib.fatal_exception_format_errors:
# at least get the core message out if something
# happened
message = self.message
ctxt.reraise = False
super(IronicException, self).__init__(message)
def format_message(self):
if self.__class__.__name__.endswith('_Remote'):
return self.args[0]
else:
return six.text_type(self)
class InstanceDeployFailure(IronicException):
message = _("Failed to deploy instance: %(reason)s")
class FileSystemNotSupported(IronicException):
message = _("Failed to create a file system. "
"File system %(fs)s is not supported.")
class InvalidMetricConfig(IronicException):
message = _("Invalid value for metrics config option: %(reason)s")
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