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# Copyright 2014-present MongoDB, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Test the monitor module."""
from __future__ import annotations
import asyncio
import gc
import subprocess
import sys
import warnings
from functools import partial
sys.path[0:0] = [""]
from test.asynchronous import AsyncIntegrationTest, async_client_context, connected, unittest
from test.asynchronous.utils import (
async_wait_until,
)
from test.utils_shared import ServerAndTopologyEventListener, gevent_monkey_patched
from pymongo.periodic_executor import _EXECUTORS
_IS_SYNC = False
def unregistered(ref):
gc.collect()
return ref not in _EXECUTORS
def get_executors(client):
executors = []
for server in client._topology._servers.values():
executors.append(server._monitor._executor)
executors.append(server._monitor._rtt_monitor._executor)
executors.append(client._kill_cursors_executor)
executors.append(client._topology._Topology__events_executor)
return [e for e in executors if e is not None]
class TestMonitor(AsyncIntegrationTest):
async def create_client(self):
listener = ServerAndTopologyEventListener()
client = await self.unmanaged_async_single_client(event_listeners=[listener])
await connected(client)
return client
@unittest.skipIf("PyPy" in sys.version, "PYTHON-5283 fails often on PyPy")
@unittest.skipIf(
gevent_monkey_patched(), "PYTHON-5516 Resources are not cleared when using gevent"
)
async def test_cleanup_executors_on_client_del(self):
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
client = await self.create_client()
executors = get_executors(client)
self.assertEqual(len(executors), 4)
# Each executor stores a weakref to itself in _EXECUTORS.
executor_refs = [(r, r()._name) for r in _EXECUTORS.copy() if r() in executors]
del executors
del client
for ref, name in executor_refs:
await async_wait_until(
partial(unregistered, ref), f"unregister executor: {name}", timeout=5
)
def resource_warning_caught():
gc.collect()
for warning in w:
if (
issubclass(warning.category, ResourceWarning)
and "Call AsyncMongoClient.close() to safely shut down your client and free up resources."
in str(warning.message)
):
return True
return False
await async_wait_until(resource_warning_caught, "catch resource warning")
async def test_cleanup_executors_on_client_close(self):
client = await self.create_client()
executors = get_executors(client)
self.assertEqual(len(executors), 4)
await client.close()
for executor in executors:
await async_wait_until(
lambda: executor._stopped, f"closed executor: {executor._name}", timeout=5
)
@async_client_context.require_sync
def test_no_thread_start_runtime_err_on_shutdown(self):
"""Test we silence noisy runtime errors fired when the AsyncMongoClient spawns a new thread
on process shutdown."""
command = [
sys.executable,
"-c",
"from pymongo import AsyncMongoClient; c = AsyncMongoClient()",
]
completed_process: subprocess.CompletedProcess = subprocess.run(
command, capture_output=True
)
self.assertFalse(completed_process.stderr)
self.assertFalse(completed_process.stdout)
if __name__ == "__main__":
unittest.main()
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