| # Copyright 2019 The gRPC Authors |
| # |
| # 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. |
| """Tests the gRPC Core shutdown path.""" |
| |
| import datetime |
| import threading |
| import time |
| import unittest |
| |
| import grpc |
| |
| _TIMEOUT_FOR_SEGFAULT = datetime.timedelta(seconds=10) |
| |
| |
| class GrpcShutdownTest(unittest.TestCase): |
| |
| def test_channel_close_with_connectivity_watcher(self): |
| """Originated by https://github.com/grpc/grpc/issues/20299. |
| |
| The grpc_shutdown happens synchronously, but there might be Core object |
| references left in Cython which might lead to ABORT or SIGSEGV. |
| """ |
| connection_failed = threading.Event() |
| |
| def on_state_change(state): |
| if state in (grpc.ChannelConnectivity.TRANSIENT_FAILURE, |
| grpc.ChannelConnectivity.SHUTDOWN): |
| connection_failed.set() |
| |
| # Connects to an void address, and subscribes state changes |
| channel = grpc.insecure_channel("0.1.1.1:12345") |
| channel.subscribe(on_state_change, True) |
| |
| deadline = datetime.datetime.now() + _TIMEOUT_FOR_SEGFAULT |
| |
| while datetime.datetime.now() < deadline: |
| time.sleep(0.1) |
| if connection_failed.is_set(): |
| channel.close() |
| |
| |
| if __name__ == '__main__': |
| unittest.main(verbosity=2) |