144 lines
5.3 KiB
Python
144 lines
5.3 KiB
Python
# Copyright 2019-present 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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"""Test compliance with the connections survive primary step down spec."""
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from __future__ import annotations
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import sys
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from test.utils import ensure_all_connected
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sys.path[0:0] = [""]
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from test import (
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IntegrationTest,
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client_context,
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unittest,
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)
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from test.helpers import repl_set_step_down
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from test.utils_shared import (
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CMAPListener,
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)
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from bson import SON
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from pymongo import monitoring
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from pymongo.errors import NotPrimaryError
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from pymongo.synchronous.collection import Collection
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from pymongo.write_concern import WriteConcern
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_IS_SYNC = True
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class TestConnectionsSurvivePrimaryStepDown(IntegrationTest):
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listener: CMAPListener
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coll: Collection
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@client_context.require_replica_set
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def setUp(self):
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super().setUp()
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self.listener = CMAPListener()
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self.client = self.rs_or_single_client(
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event_listeners=[self.listener], retryWrites=False, heartbeatFrequencyMS=500
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)
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# Ensure connections to all servers in replica set. This is to test
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# that the is_writable flag is properly updated for connections that
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# survive a replica set election.
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ensure_all_connected(self.client)
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self.db = self.client.get_database("step-down", write_concern=WriteConcern("majority"))
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self.coll = self.db.get_collection("step-down", write_concern=WriteConcern("majority"))
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# Note that all ops use same write-concern as self.db (majority).
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self.db.drop_collection("step-down")
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self.db.create_collection("step-down")
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self.listener.reset()
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def set_fail_point(self, command_args):
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cmd = SON([("configureFailPoint", "failCommand")])
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cmd.update(command_args)
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self.client.admin.command(cmd)
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def verify_pool_cleared(self):
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self.assertEqual(self.listener.event_count(monitoring.PoolClearedEvent), 1)
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def verify_pool_not_cleared(self):
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self.assertEqual(self.listener.event_count(monitoring.PoolClearedEvent), 0)
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@client_context.require_version_min(4, 2, -1)
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def test_get_more_iteration(self):
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# Insert 5 documents with WC majority.
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self.coll.insert_many([{"data": k} for k in range(5)])
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# Start a find operation and retrieve first batch of results.
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batch_size = 2
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cursor = self.coll.find(batch_size=batch_size)
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for _ in range(batch_size):
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cursor.next()
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# Force step-down the primary.
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repl_set_step_down(self.client, replSetStepDown=5, force=True)
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# Get next batch of results.
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for _ in range(batch_size):
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cursor.next()
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# Verify pool not cleared.
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self.verify_pool_not_cleared()
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# Attempt insertion to mark server description as stale and prevent a
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# NotPrimaryError on the subsequent operation.
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try:
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self.coll.insert_one({})
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except NotPrimaryError:
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pass
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# Next insert should succeed on the new primary without clearing pool.
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self.coll.insert_one({})
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self.verify_pool_not_cleared()
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def run_scenario(self, error_code, retry, pool_status_checker):
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# Set fail point.
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self.set_fail_point(
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{"mode": {"times": 1}, "data": {"failCommands": ["insert"], "errorCode": error_code}}
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)
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self.addCleanup(self.set_fail_point, {"mode": "off"})
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# Insert record and verify failure.
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with self.assertRaises(NotPrimaryError) as exc:
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self.coll.insert_one({"test": 1})
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self.assertEqual(exc.exception.details["code"], error_code) # type: ignore[call-overload]
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# Retry before CMAPListener assertion if retry_before=True.
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if retry:
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self.coll.insert_one({"test": 1})
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# Verify pool cleared/not cleared.
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pool_status_checker()
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# Always retry here to ensure discovery of new primary.
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self.coll.insert_one({"test": 1})
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@client_context.require_version_min(4, 2, -1)
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@client_context.require_test_commands
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def test_not_primary_keep_connection_pool(self):
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self.run_scenario(10107, True, self.verify_pool_not_cleared)
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@client_context.require_version_min(4, 0, 0)
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@client_context.require_version_max(4, 1, 0, -1)
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@client_context.require_test_commands
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def test_not_primary_reset_connection_pool(self):
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self.run_scenario(10107, False, self.verify_pool_cleared)
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@client_context.require_version_min(4, 0, 0)
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@client_context.require_test_commands
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def test_shutdown_in_progress(self):
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self.run_scenario(91, False, self.verify_pool_cleared)
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@client_context.require_version_min(4, 0, 0)
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@client_context.require_test_commands
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def test_interrupted_at_shutdown(self):
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self.run_scenario(11600, False, self.verify_pool_cleared)
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if __name__ == "__main__":
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unittest.main()
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