115 lines
3.5 KiB
Python
115 lines
3.5 KiB
Python
# (c) Copyright 2013 Hewlett-Packard Development Company, L.P.
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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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"""Exceptions for the Brick library."""
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import six
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from os_brick.i18n import _, _LE
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from oslo_log import log as logging
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LOG = logging.getLogger(__name__)
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class BrickException(Exception):
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"""Base Brick Exception
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To correctly use this class, inherit from it and define
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a 'msg_fmt' property. That msg_fmt 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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# kwargs doesn't match a variable in the message
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# log the issue and the kwargs
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LOG.exception(_LE("Exception in string format operation. "
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"msg='%s'"), self.message)
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for name, value in kwargs.items():
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LOG.error(_LE("%(name)s: %(value)s"), {'name': name,
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'value': value})
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# at least get the core message out if something happened
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message = self.message
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# Put the message in 'msg' so that we can access it. If we have it in
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# message it will be overshadowed by the class' message attribute
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self.msg = message
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super(BrickException, self).__init__(message)
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def __unicode__(self):
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return six.text_type(self.msg)
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class NotFound(BrickException):
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message = _("Resource could not be found.")
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code = 404
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safe = True
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class Invalid(BrickException):
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message = _("Unacceptable parameters.")
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code = 400
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# Cannot be templated as the error syntax varies.
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# msg needs to be constructed when raised.
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class InvalidParameterValue(Invalid):
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message = _("%(err)s")
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class NoFibreChannelHostsFound(BrickException):
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message = _("We are unable to locate any Fibre Channel devices.")
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class NoFibreChannelVolumeDeviceFound(BrickException):
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message = _("Unable to find a Fibre Channel volume device.")
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class VolumeDeviceNotFound(BrickException):
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message = _("Volume device not found at %(device)s.")
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class VolumePathNotRemoved(BrickException):
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message = _("Volume path %(volume_path)s was not removed in time.")
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class ProtocolNotSupported(BrickException):
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message = _("Connect to volume via protocol %(protocol)s not supported.")
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class TargetPortalNotFound(BrickException):
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message = _("Unable to find target portal %(target_portal)s.")
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class FailedISCSITargetPortalLogin(BrickException):
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message = _("Unable to login to iSCSI Target Portal")
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