ac2176cde3
Currently we have a allowed_rpc_exception_modules configuration variable which we use to configure a per-project list of modules which we will allow exceptions to be instantiated from when deserializing remote errors. It makes no sense for this to be user configurable, instead the list of modules should be set when you create a transport. Closes-Bug: #1031719 Change-Id: Ib40e92cb920996ec5e8f63d6f2cbd88fd01a90f2
81 lines
2.3 KiB
Python
81 lines
2.3 KiB
Python
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# Copyright 2013 Red Hat, Inc.
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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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import abc
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from oslo.messaging import exceptions
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class TransportDriverError(exceptions.MessagingException):
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"""Base class for transport driver specific exceptions."""
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class IncomingMessage(object):
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__metaclass__ = abc.ABCMeta
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def __init__(self, listener, ctxt, message):
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self.conf = listener.conf
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self.listener = listener
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self.ctxt = ctxt
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self.message = message
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@abc.abstractmethod
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def reply(self, reply=None, failure=None, log_failure=True):
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"Send a reply or failure back to the client."
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class Listener(object):
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__metaclass__ = abc.ABCMeta
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def __init__(self, driver, target):
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self.conf = driver.conf
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self.driver = driver
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self.target = target
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@abc.abstractmethod
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def poll(self):
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"Blocking until a message is pending and return IncomingMessage."
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class BaseDriver(object):
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__metaclass__ = abc.ABCMeta
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def __init__(self, conf, url=None, default_exchange=None,
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allowed_remote_exmods=[]):
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self.conf = conf
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self._url = url
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self._default_exchange = default_exchange
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self._allowed_remote_exmods = allowed_remote_exmods
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@abc.abstractmethod
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def send(self, target, ctxt, message,
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wait_for_reply=None, timeout=None, envelope=False):
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"""Send a message to the given target."""
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@abc.abstractmethod
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def send_notification(self, target, ctxt, message, version):
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"""Send a notification message to the given target."""
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@abc.abstractmethod
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def listen(self, target):
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"""Construct a Listener for the given target."""
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@abc.abstractmethod
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def cleanup(self):
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"""Release all resources."""
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