143 lines
4.7 KiB
Python
143 lines
4.7 KiB
Python
# Copyright 2016-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 the monitoring of the server heartbeats."""
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import sys
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import threading
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sys.path[0:0] = [""]
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from pymongo import monitoring
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from pymongo.errors import ConnectionFailure
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from pymongo.ismaster import IsMaster
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from pymongo.monitor import Monitor
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from pymongo.pool import PoolOptions
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from test import unittest, client_knobs
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from test.utils import HeartbeatEventListener, single_client, wait_until
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class MockSocketInfo(object):
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def close(self):
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pass
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def __enter__(self):
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return self
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def __exit__(self, exc_type, exc_val, exc_tb):
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pass
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class MockPool(object):
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def __init__(self, *args, **kwargs):
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self.pool_id = 0
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self._lock = threading.Lock()
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self.opts = PoolOptions()
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def get_socket(self, all_credentials):
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return MockSocketInfo()
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def return_socket(self, _):
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pass
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def reset(self):
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with self._lock:
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self.pool_id += 1
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def remove_stale_sockets(self):
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pass
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class TestHeartbeatMonitoring(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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cls.saved_listeners = monitoring._LISTENERS
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monitoring._LISTENERS = monitoring._Listeners([], [], [], [])
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@classmethod
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def tearDownClass(cls):
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monitoring._LISTENERS = cls.saved_listeners
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def create_mock_monitor(self, responses, uri, expected_results):
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listener = HeartbeatEventListener()
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with client_knobs(heartbeat_frequency=0.1,
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min_heartbeat_interval=0.1,
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events_queue_frequency=0.1):
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class MockMonitor(Monitor):
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def _check_with_socket(self, *args, **kwargs):
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if isinstance(responses[1], Exception):
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raise responses[1]
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return IsMaster(responses[1]), 99
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m = single_client(
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h=uri,
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event_listeners=(listener,),
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_monitor_class=MockMonitor,
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_pool_class=MockPool)
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expected_len = len(expected_results)
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# Wait for *at least* expected_len number of results. The
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# monitor thread may run multiple times during the execution
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# of this test.
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wait_until(
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lambda: len(listener.results) >= expected_len,
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"publish all events")
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try:
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# zip gives us len(expected_results) pairs.
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for expected, actual in zip(expected_results, listener.results):
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self.assertEqual(expected,
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actual.__class__.__name__)
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self.assertEqual(actual.connection_id,
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responses[0])
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if expected != 'ServerHeartbeatStartedEvent':
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if isinstance(actual.reply, IsMaster):
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self.assertEqual(actual.duration, 99)
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self.assertEqual(actual.reply._doc, responses[1])
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else:
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self.assertEqual(actual.reply, responses[1])
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finally:
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m.close()
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def test_standalone(self):
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responses = (('a', 27017),
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{
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"ismaster": True,
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"maxWireVersion": 4,
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"minWireVersion": 0,
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"ok": 1
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})
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uri = "mongodb://a:27017"
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expected_results = ['ServerHeartbeatStartedEvent',
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'ServerHeartbeatSucceededEvent']
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self.create_mock_monitor(responses, uri, expected_results)
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def test_standalone_error(self):
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responses = (('a', 27017),
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ConnectionFailure("SPECIAL MESSAGE"))
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uri = "mongodb://a:27017"
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# _check_with_socket failing results in a second attempt.
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expected_results = ['ServerHeartbeatStartedEvent',
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'ServerHeartbeatFailedEvent',
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'ServerHeartbeatStartedEvent',
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'ServerHeartbeatFailedEvent']
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self.create_mock_monitor(responses, uri, expected_results)
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if __name__ == "__main__":
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unittest.main()
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