127 lines
4.3 KiB
Python
127 lines
4.3 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright (c) 2011 Citrix Systems, Inc.
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# Copyright 2011 OpenStack Foundation
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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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"""
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Exception classes and SOAP response error checking module.
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"""
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from nova import exception
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from nova.openstack.common.gettextutils import _
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FAULT_NOT_AUTHENTICATED = "NotAuthenticated"
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FAULT_ALREADY_EXISTS = "AlreadyExists"
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class VimException(Exception):
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"""The VIM Exception class."""
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def __init__(self, exception_summary, excep):
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Exception.__init__(self)
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self.exception_summary = exception_summary
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self.exception_obj = excep
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def __str__(self):
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return self.exception_summary + str(self.exception_obj)
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class SessionOverLoadException(VimException):
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"""Session Overload Exception."""
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pass
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class SessionConnectionException(VimException):
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"""Session Connection Exception."""
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pass
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class VimAttributeError(VimException):
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"""VI Attribute Error."""
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pass
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class VimFaultException(Exception):
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"""The VIM Fault exception class."""
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def __init__(self, fault_list, excep):
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Exception.__init__(self)
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self.fault_list = fault_list
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self.exception_obj = excep
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def __str__(self):
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return str(self.exception_obj)
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class FaultCheckers(object):
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"""
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Methods for fault checking of SOAP response. Per Method error handlers
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for which we desire error checking are defined. SOAP faults are
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embedded in the SOAP messages as properties and not as SOAP faults.
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"""
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@staticmethod
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def retrievepropertiesex_fault_checker(resp_obj):
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"""
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Checks the RetrievePropertiesEx response for errors. Certain faults
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are sent as part of the SOAP body as property of missingSet.
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For example NotAuthenticated fault.
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"""
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fault_list = []
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if not resp_obj:
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# This is the case when the session has timed out. ESX SOAP server
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# sends an empty RetrievePropertiesResponse. Normally missingSet in
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# the returnval field has the specifics about the error, but that's
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# not the case with a timed out idle session. It is as bad as a
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# terminated session for we cannot use the session. So setting
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# fault to NotAuthenticated fault.
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fault_list = ["NotAuthenticated"]
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else:
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for obj_cont in resp_obj.objects:
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if hasattr(obj_cont, "missingSet"):
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for missing_elem in obj_cont.missingSet:
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fault_type = missing_elem.fault.fault.__class__
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# Fault needs to be added to the type of fault for
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# uniformity in error checking as SOAP faults define
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fault_list.append(fault_type.__name__)
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if fault_list:
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exc_msg_list = ', '.join(fault_list)
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raise VimFaultException(fault_list, Exception(_("Error(s) %s "
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"occurred in the call to RetrievePropertiesEx") %
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exc_msg_list))
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class VMwareDriverException(exception.NovaException):
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"""Base class for all exceptions raised by the VMware Driver.
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All exceptions raised by the VMwareAPI drivers should raise
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an exception descended from this class as a root. This will
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allow the driver to potentially trap problems related to its
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own internal configuration before halting the nova-compute
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node.
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"""
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msg_fmt = _("VMware Driver fault.")
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class VMwareDriverConfigurationException(VMwareDriverException):
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"""Base class for all configuration exceptions.
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"""
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msg_fmt = _("VMware Driver configuration fault.")
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class UseLinkedCloneConfigurationFault(VMwareDriverConfigurationException):
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msg_fmt = _("No default value for use_linked_clone found.")
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