bb90b10b8b
When an exception was caught and rethrown, it should call 'raise' without any arguments because it shows the place where an exception occured initially instead of place where the exception re-raised. Change-Id: I112eeea489470bca34b588bd862500d615c84e67
107 lines
3.3 KiB
Python
107 lines
3.3 KiB
Python
# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Ironic base exception handling.
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Includes decorator for re-raising Ironic-type exceptions.
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SHOULD include dedicated exception logging.
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"""
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import logging
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import six
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from oslo_config import cfg
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from oslo_utils import excutils
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from ironic_lib.common.i18n import _
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from ironic_lib.common.i18n import _LE
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LOG = logging.getLogger(__name__)
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exc_log_opts = [
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cfg.BoolOpt('fatal_exception_format_errors',
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default=False,
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help='Make exception message format errors fatal.',
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deprecated_group='DEFAULT'),
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]
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CONF = cfg.CONF
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CONF.register_opts(exc_log_opts, group='ironic_lib')
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class IronicException(Exception):
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"""Base Ironic Exception
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To correctly use this class, inherit from it and define
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a 'message' property. That message will get printf'd
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with the keyword arguments provided to the constructor.
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"""
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message = _("An unknown exception occurred.")
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code = 500
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headers = {}
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safe = False
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def __init__(self, message=None, **kwargs):
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self.kwargs = kwargs
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if 'code' not in self.kwargs:
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try:
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self.kwargs['code'] = self.code
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except AttributeError:
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pass
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if not message:
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try:
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message = self.message % kwargs
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except Exception:
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with excutils.save_and_reraise_exception() as ctxt:
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# kwargs doesn't match a variable in the message
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# log the issue and the kwargs
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prs = ', '.join('%s=%s' % pair for pair in kwargs.items())
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LOG.exception(_LE('Exception in string format operation '
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'(arguments %s)'), prs)
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if not CONF.ironic_lib.fatal_exception_format_errors:
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# at least get the core message out if something
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# happened
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message = self.message
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ctxt.reraise = False
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super(IronicException, self).__init__(message)
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def format_message(self):
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if self.__class__.__name__.endswith('_Remote'):
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return self.args[0]
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else:
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return six.text_type(self)
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class InstanceDeployFailure(IronicException):
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message = _("Failed to deploy instance: %(reason)s")
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class FileSystemNotSupported(IronicException):
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message = _("Failed to create a file system. "
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"File system %(fs)s is not supported.")
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class InvalidMetricConfig(IronicException):
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message = _("Invalid value for metrics config option: %(reason)s")
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