1af927e7fb
Part of blueprint versioned-rpc-apis. This commit includes the base support for versioned RPC APIs. It introduces the RpcProxy and RpcDispatcher classes that have common code for handling versioning on the client and server sides, respectively. RPC APIs will be converted one at a time using this infrastructure. Change-Id: I07bd82e9ff60c356123950e466caaffdfce79eba
110 lines
3.6 KiB
Python
110 lines
3.6 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012, 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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"""
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Unit Tests for rpc.dispatcher
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"""
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from nova import context
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from nova.rpc import dispatcher
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from nova.rpc import common as rpc_common
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from nova import test
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class RpcDispatcherTestCase(test.TestCase):
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class API1(object):
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RPC_API_VERSION = '1.0'
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def __init__(self):
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self.test_method_ctxt = None
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self.test_method_arg1 = None
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def test_method(self, ctxt, arg1):
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self.test_method_ctxt = ctxt
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self.test_method_arg1 = arg1
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class API2(object):
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RPC_API_VERSION = '2.1'
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def __init__(self):
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self.test_method_ctxt = None
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self.test_method_arg1 = None
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def test_method(self, ctxt, arg1):
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self.test_method_ctxt = ctxt
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self.test_method_arg1 = arg1
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class API3(object):
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RPC_API_VERSION = '3.5'
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def __init__(self):
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self.test_method_ctxt = None
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self.test_method_arg1 = None
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def test_method(self, ctxt, arg1):
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self.test_method_ctxt = ctxt
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self.test_method_arg1 = arg1
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def setUp(self):
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self.ctxt = context.RequestContext('fake_user', 'fake_project')
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super(RpcDispatcherTestCase, self).setUp()
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def tearDown(self):
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super(RpcDispatcherTestCase, self).tearDown()
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def _test_dispatch(self, version, expectations):
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v2 = self.API2()
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v3 = self.API3()
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disp = dispatcher.RpcDispatcher([v2, v3])
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disp.dispatch(self.ctxt, version, 'test_method', arg1=1)
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self.assertEqual(v2.test_method_ctxt, expectations[0])
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self.assertEqual(v2.test_method_arg1, expectations[1])
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self.assertEqual(v3.test_method_ctxt, expectations[2])
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self.assertEqual(v3.test_method_arg1, expectations[3])
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def test_dispatch(self):
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self._test_dispatch('2.1', (self.ctxt, 1, None, None))
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self._test_dispatch('3.5', (None, None, self.ctxt, 1))
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def test_dispatch_lower_minor_version(self):
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self._test_dispatch('2.0', (self.ctxt, 1, None, None))
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self._test_dispatch('3.1', (None, None, self.ctxt, 1))
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def test_dispatch_higher_minor_version(self):
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self.assertRaises(rpc_common.UnsupportedRpcVersion,
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self._test_dispatch, '2.6', (None, None, None, None))
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self.assertRaises(rpc_common.UnsupportedRpcVersion,
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self._test_dispatch, '3.6', (None, None, None, None))
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def test_dispatch_lower_major_version(self):
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self.assertRaises(rpc_common.UnsupportedRpcVersion,
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self._test_dispatch, '1.0', (None, None, None, None))
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def test_dispatch_higher_major_version(self):
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self.assertRaises(rpc_common.UnsupportedRpcVersion,
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self._test_dispatch, '4.0', (None, None, None, None))
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def test_dispatch_no_version_uses_v1(self):
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v1 = self.API1()
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disp = dispatcher.RpcDispatcher([v1])
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disp.dispatch(self.ctxt, None, 'test_method', arg1=1)
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self.assertEqual(v1.test_method_ctxt, self.ctxt)
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self.assertEqual(v1.test_method_arg1, 1)
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