diff options
Diffstat (limited to 'src/python/grpcio_tests/tests/unit/_channel_close_test.py')
| -rw-r--r-- | src/python/grpcio_tests/tests/unit/_channel_close_test.py | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/src/python/grpcio_tests/tests/unit/_channel_close_test.py b/src/python/grpcio_tests/tests/unit/_channel_close_test.py new file mode 100644 index 0000000000..af3a9ee1ee --- /dev/null +++ b/src/python/grpcio_tests/tests/unit/_channel_close_test.py @@ -0,0 +1,185 @@ +# Copyright 2018 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 server and client side compression.""" + +import threading +import time +import unittest + +import grpc + +from tests.unit import test_common +from tests.unit.framework.common import test_constants + +_BEAT = 0.5 +_SOME_TIME = 5 +_MORE_TIME = 10 + + +class _MethodHandler(grpc.RpcMethodHandler): + + request_streaming = True + response_streaming = True + request_deserializer = None + response_serializer = None + + def stream_stream(self, request_iterator, servicer_context): + for request in request_iterator: + yield request * 2 + + +_METHOD_HANDLER = _MethodHandler() + + +class _GenericHandler(grpc.GenericRpcHandler): + + def service(self, handler_call_details): + return _METHOD_HANDLER + + +_GENERIC_HANDLER = _GenericHandler() + + +class _Pipe(object): + + def __init__(self, values): + self._condition = threading.Condition() + self._values = list(values) + self._open = True + + def __iter__(self): + return self + + def _next(self): + with self._condition: + while not self._values and self._open: + self._condition.wait() + if self._values: + return self._values.pop(0) + else: + raise StopIteration() + + def next(self): + return self._next() + + def __next__(self): + return self._next() + + def add(self, value): + with self._condition: + self._values.append(value) + self._condition.notify() + + def close(self): + with self._condition: + self._open = False + self._condition.notify() + + def __enter__(self): + return self + + def __exit__(self, type, value, traceback): + self.close() + + +class ChannelCloseTest(unittest.TestCase): + + def setUp(self): + self._server = test_common.test_server( + max_workers=test_constants.THREAD_CONCURRENCY) + self._server.add_generic_rpc_handlers((_GENERIC_HANDLER,)) + self._port = self._server.add_insecure_port('[::]:0') + self._server.start() + + def tearDown(self): + self._server.stop(None) + + def test_close_immediately_after_call_invocation(self): + channel = grpc.insecure_channel('localhost:{}'.format(self._port)) + multi_callable = channel.stream_stream('Meffod') + request_iterator = _Pipe(()) + response_iterator = multi_callable(request_iterator) + channel.close() + request_iterator.close() + + self.assertIs(response_iterator.code(), grpc.StatusCode.CANCELLED) + + def test_close_while_call_active(self): + channel = grpc.insecure_channel('localhost:{}'.format(self._port)) + multi_callable = channel.stream_stream('Meffod') + request_iterator = _Pipe((b'abc',)) + response_iterator = multi_callable(request_iterator) + next(response_iterator) + channel.close() + request_iterator.close() + + self.assertIs(response_iterator.code(), grpc.StatusCode.CANCELLED) + + def test_context_manager_close_while_call_active(self): + with grpc.insecure_channel('localhost:{}'.format( + self._port)) as channel: # pylint: disable=bad-continuation + multi_callable = channel.stream_stream('Meffod') + request_iterator = _Pipe((b'abc',)) + response_iterator = multi_callable(request_iterator) + next(response_iterator) + request_iterator.close() + + self.assertIs(response_iterator.code(), grpc.StatusCode.CANCELLED) + + def test_context_manager_close_while_many_calls_active(self): + with grpc.insecure_channel('localhost:{}'.format( + self._port)) as channel: # pylint: disable=bad-continuation + multi_callable = channel.stream_stream('Meffod') + request_iterators = tuple( + _Pipe((b'abc',)) + for _ in range(test_constants.THREAD_CONCURRENCY)) + response_iterators = [] + for request_iterator in request_iterators: + response_iterator = multi_callable(request_iterator) + next(response_iterator) + response_iterators.append(response_iterator) + for request_iterator in request_iterators: + request_iterator.close() + + for response_iterator in response_iterators: + self.assertIs(response_iterator.code(), grpc.StatusCode.CANCELLED) + + def test_many_concurrent_closes(self): + channel = grpc.insecure_channel('localhost:{}'.format(self._port)) + multi_callable = channel.stream_stream('Meffod') + request_iterator = _Pipe((b'abc',)) + response_iterator = multi_callable(request_iterator) + next(response_iterator) + start = time.time() + end = start + _MORE_TIME + + def sleep_some_time_then_close(): + time.sleep(_SOME_TIME) + channel.close() + + for _ in range(test_constants.THREAD_CONCURRENCY): + close_thread = threading.Thread(target=sleep_some_time_then_close) + close_thread.start() + while True: + request_iterator.add(b'def') + time.sleep(_BEAT) + if end < time.time(): + break + request_iterator.close() + + self.assertIs(response_iterator.code(), grpc.StatusCode.CANCELLED) + + +if __name__ == '__main__': + unittest.main(verbosity=2) |