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OpenStack Study: exception.py**** CubicPower OpenStack Study ****
# (c) Copyright 2013 Hewlett-Packard Development Company, L.P. # # 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. """Exceptions for the Brick library.""" from cinder.openstack.common.gettextutils import _ from cinder.openstack.common import log as logging LOG = logging.getLogger(__name__)
**** CubicPower OpenStack Study **** class BrickException(Exception): """Base Brick Exception To correctly use this class, inherit from it and
**** CubicPower OpenStack Study **** 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: # kwargs doesn't match a variable in the message # log the issue and the kwargs msg = (_("Exception in string format operation. msg='%s'") % self.message) LOG.exception(msg) for name, value in kwargs.iteritems(): LOG.error("%s: %s" % (name, value)) # at least get the core message out if something happened message = self.message # Put the message in 'msg' so that we can access it. If we have it in # message it will be overshadowed by the class' message attribute self.msg = message super(BrickException, self).__init__(message)
**** CubicPower OpenStack Study **** def __unicode__(self): return unicode(self.msg)
**** CubicPower OpenStack Study **** class NotFound(BrickException): message = _("Resource could not be found.") code = 404 safe = True
**** CubicPower OpenStack Study **** class Invalid(BrickException): message = _("Unacceptable parameters.") code = 400 # Cannot be templated as the error syntax varies. # msg needs to be constructed when raised.
**** CubicPower OpenStack Study **** class InvalidParameterValue(Invalid): message = _("%(err)s")
**** CubicPower OpenStack Study **** class NoFibreChannelHostsFound(BrickException): message = _("We are unable to locate any Fibre Channel devices.")
**** CubicPower OpenStack Study **** class NoFibreChannelVolumeDeviceFound(BrickException): message = _("Unable to find a Fibre Channel volume device.")
**** CubicPower OpenStack Study **** class VolumeDeviceNotFound(BrickException): message = _("Volume device not found at %(device)s.")
**** CubicPower OpenStack Study **** class VolumeGroupNotFound(BrickException): message = _('Unable to find Volume Group: %(vg_name)s')
**** CubicPower OpenStack Study **** class VolumeGroupCreationFailed(BrickException): message = _('Failed to create Volume Group: %(vg_name)s')
**** CubicPower OpenStack Study **** class ISCSITargetCreateFailed(BrickException): message = _("Failed to create iscsi target for volume %(volume_id)s.")
**** CubicPower OpenStack Study **** class ISCSITargetRemoveFailed(BrickException): message = _("Failed to remove iscsi target for volume %(volume_id)s.")
**** CubicPower OpenStack Study **** class ISCSITargetAttachFailed(BrickException): message = _("Failed to attach iSCSI target for volume %(volume_id)s.")
**** CubicPower OpenStack Study **** class ProtocolNotSupported(BrickException): message = _("Connect to volume via protocol %(protocol)s not supported.")
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