OpenStack Networking (Neutron)
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2011 Nicira Networks, Inc
# 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
# 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.
Quantum base exception handling, including decorator for re-raising
Quantum-type exceptions. SHOULD include dedicated exception logging.
import logging
class QuantumException(Exception):
"""Base Quantum Exception
Taken from nova.exception.NovaException
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.")
def __init__(self, **kwargs):
self._error_string = self.message % kwargs
except Exception:
# at least get the core message out if something happened
self._error_string = self.message
def __str__(self):
return self._error_string
class ProcessExecutionError(IOError):
def __init__(self, stdout=None, stderr=None, exit_code=None, cmd=None,
if description is None:
description = "Unexpected error while running command."
if exit_code is None:
exit_code = '-'
message = "%s\nCommand: %s\nExit code: %s\nStdout: %r\nStderr: %r" % (
description, cmd, exit_code, stdout, stderr)
IOError.__init__(self, message)
class Error(Exception):
def __init__(self, message=None):
super(Error, self).__init__(message)
class ApiError(Error):
def __init__(self, message='Unknown', code='Unknown'):
self.message = message
self.code = code
super(ApiError, self).__init__('%s: %s' % (code, message))
class NotFound(QuantumException):
class ClassNotFound(NotFound):
message = _("Class %(class_name)s could not be found")
class NetworkNotFound(NotFound):
message = _("Network %(net_id)s could not be found")
class PortNotFound(NotFound):
message = _("Port %(port_id)s could not be found " \
"on network %(net_id)s")
class StateInvalid(QuantumException):
message = _("Unsupported port state: %(port_state)s")
class NetworkInUse(QuantumException):
message = _("Unable to complete operation on network %(net_id)s. " \
"There is one or more attachments plugged into its ports.")
class PortInUse(QuantumException):
message = _("Unable to complete operation on port %(port_id)s " \
"for network %(net_id)s. The attachment '%(att_id)s" \
"is plugged into the logical port.")
class AlreadyAttached(QuantumException):
message = _("Unable to plug the attachment %(att_id)s into port " \
"%(port_id)s for network %(net_id)s. The attachment is " \
"already plugged into port %(att_port_id)s")
class Duplicate(Error):
class NotAuthorized(Error):
class NotEmpty(Error):
class Invalid(Error):
class InvalidContentType(Invalid):
message = _("Invalid content type %(content_type)s.")
class BadInputError(Exception):
"""Error resulting from a client sending bad input to a server"""
class MissingArgumentError(Error):
def wrap_exception(f):
def _wrap(*args, **kw):
return f(*args, **kw)
except Exception, e:
if not isinstance(e, Error):
#exc_type, exc_value, exc_traceback = sys.exc_info()
logging.exception('Uncaught exception')
raise Error(str(e))
_wrap.func_name = f.func_name
return _wrap