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# Copyright 2016 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 maxStalenessSeconds support."""
from __future__ import annotations
import asyncio
import os
import sys
import time
import warnings
from pathlib import Path
from pymongo import AsyncMongoClient
from pymongo.operations import _Op
sys.path[0:0] = [""]
from test.asynchronous import AsyncPyMongoTestCase, async_client_context, unittest
from test.asynchronous.utils_selection_tests import create_selection_tests
from pymongo.errors import ConfigurationError
from pymongo.server_selectors import writable_server_selector
_IS_SYNC = False
# Location of JSON test specifications.
if _IS_SYNC:
TEST_PATH = os.path.join(Path(__file__).resolve().parent, "max_staleness")
else:
TEST_PATH = os.path.join(Path(__file__).resolve().parent.parent, "max_staleness")
class TestAllScenarios(create_selection_tests(TEST_PATH)): # type: ignore
pass
class TestMaxStaleness(AsyncPyMongoTestCase):
async def test_max_staleness(self):
client = self.simple_client()
self.assertEqual(-1, client.read_preference.max_staleness)
client = self.simple_client("mongodb://a/?readPreference=secondary")
self.assertEqual(-1, client.read_preference.max_staleness)
# These tests are specified in max-staleness-tests.rst.
with self.assertRaises(ConfigurationError):
# Default read pref "primary" can't be used with max staleness.
self.simple_client("mongodb://a/?maxStalenessSeconds=120")
with self.assertRaises(ConfigurationError):
# Read pref "primary" can't be used with max staleness.
self.simple_client("mongodb://a/?readPreference=primary&maxStalenessSeconds=120")
client = self.simple_client("mongodb://host/?maxStalenessSeconds=-1")
self.assertEqual(-1, client.read_preference.max_staleness)
client = self.simple_client("mongodb://host/?readPreference=primary&maxStalenessSeconds=-1")
self.assertEqual(-1, client.read_preference.max_staleness)
client = self.simple_client(
"mongodb://host/?readPreference=secondary&maxStalenessSeconds=120"
)
self.assertEqual(120, client.read_preference.max_staleness)
client = self.simple_client("mongodb://a/?readPreference=secondary&maxStalenessSeconds=1")
self.assertEqual(1, client.read_preference.max_staleness)
client = self.simple_client("mongodb://a/?readPreference=secondary&maxStalenessSeconds=-1")
self.assertEqual(-1, client.read_preference.max_staleness)
client = self.simple_client(maxStalenessSeconds=-1, readPreference="nearest")
self.assertEqual(-1, client.read_preference.max_staleness)
with self.assertRaises(TypeError):
# Prohibit None.
self.simple_client(maxStalenessSeconds=None, readPreference="nearest")
async def test_max_staleness_float(self):
with self.assertRaises(TypeError) as ctx:
await self.async_rs_or_single_client(maxStalenessSeconds=1.5, readPreference="nearest")
self.assertIn("must be an integer", str(ctx.exception))
with warnings.catch_warnings(record=True) as ctx:
warnings.simplefilter("always")
client = self.simple_client(
"mongodb://host/?maxStalenessSeconds=1.5&readPreference=nearest"
)
# Option was ignored.
self.assertEqual(-1, client.read_preference.max_staleness)
self.assertIn("must be an integer", str(ctx[0]))
async def test_max_staleness_zero(self):
# Zero is too small.
with self.assertRaises(ValueError) as ctx:
await self.async_rs_or_single_client(maxStalenessSeconds=0, readPreference="nearest")
self.assertIn("must be a positive integer", str(ctx.exception))
with warnings.catch_warnings(record=True) as ctx:
warnings.simplefilter("always")
client = self.simple_client(
"mongodb://host/?maxStalenessSeconds=0&readPreference=nearest"
)
# Option was ignored.
self.assertEqual(-1, client.read_preference.max_staleness)
self.assertIn("must be a positive integer", str(ctx[0]))
@async_client_context.require_replica_set
async def test_last_write_date(self):
# From max-staleness-tests.rst, "Parse lastWriteDate".
client = await self.async_rs_or_single_client(heartbeatFrequencyMS=500)
await client.pymongo_test.test.insert_one({})
# Wait for the server description to be updated.
await asyncio.sleep(1)
server = await client._topology.select_server(writable_server_selector, _Op.TEST)
first = server.description.last_write_date
self.assertTrue(first)
# The first last_write_date may correspond to a internal server write,
# sleep so that the next write does not occur within the same second.
await asyncio.sleep(1)
await client.pymongo_test.test.insert_one({})
# Wait for the server description to be updated.
await asyncio.sleep(1)
server = await client._topology.select_server(writable_server_selector, _Op.TEST)
second = server.description.last_write_date
assert first is not None
assert second is not None
self.assertGreater(second, first)
self.assertLess(second, first + 10)
if __name__ == "__main__":
unittest.main()
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