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# Copyright 2019-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.
"""Run the SRV support tests."""
from __future__ import annotations
import asyncio
import sys
import time
from test.asynchronous.utils import flaky
from test.utils_shared import FunctionCallRecorder
from typing import Any
sys.path[0:0] = [""]
from test.asynchronous import AsyncPyMongoTestCase, client_knobs, unittest
from test.asynchronous.utils import async_wait_until
import pymongo
from pymongo import common
from pymongo.asynchronous.srv_resolver import _have_dnspython
from pymongo.errors import ConfigurationError
_IS_SYNC = False
WAIT_TIME = 0.1
class SrvPollingKnobs:
def __init__(
self,
ttl_time=None,
min_srv_rescan_interval=None,
nodelist_callback=None,
count_resolver_calls=False,
):
self.ttl_time = ttl_time
self.min_srv_rescan_interval = min_srv_rescan_interval
self.nodelist_callback = nodelist_callback
self.count_resolver_calls = count_resolver_calls
self.old_min_srv_rescan_interval = None
self.old_dns_resolver_response = None
def enable(self):
self.old_min_srv_rescan_interval = common.MIN_SRV_RESCAN_INTERVAL
self.old_dns_resolver_response = (
pymongo.asynchronous.srv_resolver._SrvResolver.get_hosts_and_min_ttl
)
if self.min_srv_rescan_interval is not None:
common.MIN_SRV_RESCAN_INTERVAL = self.min_srv_rescan_interval
async def mock_get_hosts_and_min_ttl(resolver, *args):
assert self.old_dns_resolver_response is not None
nodes, ttl = await self.old_dns_resolver_response(resolver)
if self.nodelist_callback is not None:
nodes = self.nodelist_callback()
if self.ttl_time is not None:
ttl = self.ttl_time
return nodes, ttl
patch_func: Any
if self.count_resolver_calls:
patch_func = FunctionCallRecorder(mock_get_hosts_and_min_ttl)
else:
patch_func = mock_get_hosts_and_min_ttl
pymongo.asynchronous.srv_resolver._SrvResolver.get_hosts_and_min_ttl = patch_func # type: ignore
def __enter__(self):
self.enable()
def disable(self):
common.MIN_SRV_RESCAN_INTERVAL = self.old_min_srv_rescan_interval # type: ignore
pymongo.asynchronous.srv_resolver._SrvResolver.get_hosts_and_min_ttl = ( # type: ignore
self.old_dns_resolver_response
)
def __exit__(self, exc_type, exc_val, exc_tb):
self.disable()
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