101 lines
3.4 KiB
Python
101 lines
3.4 KiB
Python
# Copyright 2015 MongoDB, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from __future__ import annotations
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import unittest
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import pytest
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try:
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from mockupdb import Future, MockupDB, OpReply, going, wait_until
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_HAVE_MOCKUPDB = True
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except ImportError:
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_HAVE_MOCKUPDB = False
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from pymongo import MongoClient
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from pymongo.common import MIN_SUPPORTED_WIRE_VERSION
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from pymongo.errors import ConnectionFailure
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from pymongo.topology_description import TOPOLOGY_TYPE
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pytestmark = pytest.mark.mockupdb
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class TestNetworkDisconnectPrimary(unittest.TestCase):
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def test_network_disconnect_primary(self):
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# Application operation fails against primary. Test that topology
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# type changes from ReplicaSetWithPrimary to ReplicaSetNoPrimary.
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# http://bit.ly/1B5ttuL
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primary, secondary = MockupDB(), MockupDB()
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for server in primary, secondary:
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server.run()
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self.addCleanup(server.stop)
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hosts = [server.address_string for server in (primary, secondary)]
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primary_response = OpReply(
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ismaster=True,
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setName="rs",
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hosts=hosts,
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minWireVersion=2,
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maxWireVersion=MIN_SUPPORTED_WIRE_VERSION,
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)
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primary.autoresponds("ismaster", primary_response)
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secondary.autoresponds(
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"ismaster",
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ismaster=False,
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secondary=True,
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setName="rs",
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hosts=hosts,
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minWireVersion=2,
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maxWireVersion=MIN_SUPPORTED_WIRE_VERSION,
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)
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client = MongoClient(primary.uri, replicaSet="rs")
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self.addCleanup(client.close)
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wait_until(lambda: client.primary == primary.address, "discover primary")
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topology = client._topology
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self.assertEqual(TOPOLOGY_TYPE.ReplicaSetWithPrimary, topology.description.topology_type)
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# Open a socket in the application pool (calls ismaster).
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with going(client.db.command, "buildinfo"):
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primary.receives("buildinfo").ok()
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# The primary hangs replying to ismaster.
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ismaster_future = Future()
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primary.autoresponds("ismaster", lambda r: r.ok(ismaster_future.result()))
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# Network error on application operation.
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with self.assertRaises(ConnectionFailure):
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with going(client.db.command, "buildinfo"):
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primary.receives("buildinfo").hangup()
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# Topology type is updated.
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self.assertEqual(TOPOLOGY_TYPE.ReplicaSetNoPrimary, topology.description.topology_type)
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# Let ismasters through again.
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ismaster_future.set_result(primary_response)
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# Demand a primary.
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with going(client.db.command, "buildinfo"):
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wait_until(lambda: client.primary == primary.address, "rediscover primary")
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primary.receives("buildinfo").ok()
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self.assertEqual(TOPOLOGY_TYPE.ReplicaSetWithPrimary, topology.description.topology_type)
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if __name__ == "__main__":
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unittest.main()
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