50 lines
1.6 KiB
Python
50 lines
1.6 KiB
Python
# 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 fixtures
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from oslo import messaging
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class CastAsCall(fixtures.Fixture):
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"""Make RPC 'cast' behave like a 'call'.
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This is a little hack for tests that need to know when a cast
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operation has completed. The idea is that we wait for the RPC
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endpoint method to complete and return before continuing on the
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caller.
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See Ia7f40718533e450f00cd3e7d753ac65755c70588 for more background.
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"""
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def __init__(self, stubs):
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super(CastAsCall, self).__init__()
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self.stubs = stubs
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@staticmethod
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def _stub_out(stubs, obj):
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orig_prepare = obj.prepare
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def prepare(self, *args, **kwargs):
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cctxt = orig_prepare(self, *args, **kwargs)
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CastAsCall._stub_out(stubs, cctxt) # woo, recurse!
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return cctxt
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stubs.Set(obj, 'prepare', prepare)
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stubs.Set(obj, 'cast', obj.call)
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def setUp(self):
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super(CastAsCall, self).setUp()
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self._stub_out(self.stubs, messaging.RPCClient)
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