diff options
Diffstat (limited to 'src/python/grpcio_tests/tests/unit/_cython/_read_some_but_not_all_responses_test.py')
| -rw-r--r-- | src/python/grpcio_tests/tests/unit/_cython/_read_some_but_not_all_responses_test.py | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/src/python/grpcio_tests/tests/unit/_cython/_read_some_but_not_all_responses_test.py b/src/python/grpcio_tests/tests/unit/_cython/_read_some_but_not_all_responses_test.py new file mode 100644 index 0000000000..27fcee0d6f --- /dev/null +++ b/src/python/grpcio_tests/tests/unit/_cython/_read_some_but_not_all_responses_test.py @@ -0,0 +1,251 @@ +# Copyright 2016, Google Inc. +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are +# met: +# +# * Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# * Redistributions in binary form must reproduce the above +# copyright notice, this list of conditions and the following disclaimer +# in the documentation and/or other materials provided with the +# distribution. +# * Neither the name of Google Inc. nor the names of its +# contributors may be used to endorse or promote products derived from +# this software without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +"""Test a corner-case at the level of the Cython API.""" + +import threading +import unittest + +from grpc._cython import cygrpc + +_INFINITE_FUTURE = cygrpc.Timespec(float('+inf')) +_EMPTY_FLAGS = 0 +_EMPTY_METADATA = cygrpc.Metadata(()) + + +class _ServerDriver(object): + + def __init__(self, completion_queue, shutdown_tag): + self._condition = threading.Condition() + self._completion_queue = completion_queue + self._shutdown_tag = shutdown_tag + self._events = [] + self._saw_shutdown_tag = False + + def start(self): + def in_thread(): + while True: + event = self._completion_queue.poll() + with self._condition: + self._events.append(event) + self._condition.notify() + if event.tag is self._shutdown_tag: + self._saw_shutdown_tag = True + break + thread = threading.Thread(target=in_thread) + thread.start() + + def done(self): + with self._condition: + return self._saw_shutdown_tag + + def first_event(self): + with self._condition: + while not self._events: + self._condition.wait() + return self._events[0] + + def events(self): + with self._condition: + while not self._saw_shutdown_tag: + self._condition.wait() + return tuple(self._events) + + +class _QueueDriver(object): + + def __init__(self, condition, completion_queue, due): + self._condition = condition + self._completion_queue = completion_queue + self._due = due + self._events = [] + self._returned = False + + def start(self): + def in_thread(): + while True: + event = self._completion_queue.poll() + with self._condition: + self._events.append(event) + self._due.remove(event.tag) + self._condition.notify_all() + if not self._due: + self._returned = True + return + thread = threading.Thread(target=in_thread) + thread.start() + + def done(self): + with self._condition: + return self._returned + + def event_with_tag(self, tag): + with self._condition: + while True: + for event in self._events: + if event.tag is tag: + return event + self._condition.wait() + + def events(self): + with self._condition: + while not self._returned: + self._condition.wait() + return tuple(self._events) + + +class ReadSomeButNotAllResponsesTest(unittest.TestCase): + + def testReadSomeButNotAllResponses(self): + server_completion_queue = cygrpc.CompletionQueue() + server = cygrpc.Server() + server.register_completion_queue(server_completion_queue) + port = server.add_http2_port(b'[::]:0') + server.start() + channel = cygrpc.Channel('localhost:{}'.format(port).encode()) + + server_shutdown_tag = 'server_shutdown_tag' + server_driver = _ServerDriver(server_completion_queue, server_shutdown_tag) + server_driver.start() + + client_condition = threading.Condition() + client_due = set() + client_completion_queue = cygrpc.CompletionQueue() + client_driver = _QueueDriver( + client_condition, client_completion_queue, client_due) + client_driver.start() + + server_call_condition = threading.Condition() + server_send_initial_metadata_tag = 'server_send_initial_metadata_tag' + server_send_first_message_tag = 'server_send_first_message_tag' + server_send_second_message_tag = 'server_send_second_message_tag' + server_complete_rpc_tag = 'server_complete_rpc_tag' + server_call_due = set(( + server_send_initial_metadata_tag, + server_send_first_message_tag, + server_send_second_message_tag, + server_complete_rpc_tag, + )) + server_call_completion_queue = cygrpc.CompletionQueue() + server_call_driver = _QueueDriver( + server_call_condition, server_call_completion_queue, server_call_due) + server_call_driver.start() + + server_rpc_tag = 'server_rpc_tag' + request_call_result = server.request_call( + server_call_completion_queue, server_completion_queue, server_rpc_tag) + + client_call = channel.create_call( + None, _EMPTY_FLAGS, client_completion_queue, b'/twinkies', None, + _INFINITE_FUTURE) + client_receive_initial_metadata_tag = 'client_receive_initial_metadata_tag' + client_complete_rpc_tag = 'client_complete_rpc_tag' + with client_condition: + client_receive_initial_metadata_start_batch_result = ( + client_call.start_batch(cygrpc.Operations([ + cygrpc.operation_receive_initial_metadata(_EMPTY_FLAGS), + ]), client_receive_initial_metadata_tag)) + client_due.add(client_receive_initial_metadata_tag) + client_complete_rpc_start_batch_result = ( + client_call.start_batch(cygrpc.Operations([ + cygrpc.operation_send_initial_metadata( + _EMPTY_METADATA, _EMPTY_FLAGS), + cygrpc.operation_send_close_from_client(_EMPTY_FLAGS), + cygrpc.operation_receive_status_on_client(_EMPTY_FLAGS), + ]), client_complete_rpc_tag)) + client_due.add(client_complete_rpc_tag) + + server_rpc_event = server_driver.first_event() + + with server_call_condition: + server_send_initial_metadata_start_batch_result = ( + server_rpc_event.operation_call.start_batch(cygrpc.Operations([ + cygrpc.operation_send_initial_metadata( + _EMPTY_METADATA, _EMPTY_FLAGS), + ]), server_send_initial_metadata_tag)) + server_send_first_message_start_batch_result = ( + server_rpc_event.operation_call.start_batch(cygrpc.Operations([ + cygrpc.operation_send_message(b'\x07', _EMPTY_FLAGS), + ]), server_send_first_message_tag)) + server_send_initial_metadata_event = server_call_driver.event_with_tag( + server_send_initial_metadata_tag) + server_send_first_message_event = server_call_driver.event_with_tag( + server_send_first_message_tag) + with server_call_condition: + server_send_second_message_start_batch_result = ( + server_rpc_event.operation_call.start_batch(cygrpc.Operations([ + cygrpc.operation_send_message(b'\x07', _EMPTY_FLAGS), + ]), server_send_second_message_tag)) + server_complete_rpc_start_batch_result = ( + server_rpc_event.operation_call.start_batch(cygrpc.Operations([ + cygrpc.operation_receive_close_on_server(_EMPTY_FLAGS), + cygrpc.operation_send_status_from_server( + cygrpc.Metadata(()), cygrpc.StatusCode.ok, b'test details', + _EMPTY_FLAGS), + ]), server_complete_rpc_tag)) + server_send_second_message_event = server_call_driver.event_with_tag( + server_send_second_message_tag) + server_complete_rpc_event = server_call_driver.event_with_tag( + server_complete_rpc_tag) + server_call_driver.events() + + with client_condition: + client_receive_first_message_tag = 'client_receive_first_message_tag' + client_receive_first_message_start_batch_result = ( + client_call.start_batch(cygrpc.Operations([ + cygrpc.operation_receive_message(_EMPTY_FLAGS), + ]), client_receive_first_message_tag)) + client_due.add(client_receive_first_message_tag) + client_receive_first_message_event = client_driver.event_with_tag( + client_receive_first_message_tag) + + client_call_cancel_result = client_call.cancel() + client_driver.events() + + server.shutdown(server_completion_queue, server_shutdown_tag) + server.cancel_all_calls() + server_driver.events() + + self.assertEqual(cygrpc.CallError.ok, request_call_result) + self.assertEqual( + cygrpc.CallError.ok, server_send_initial_metadata_start_batch_result) + self.assertEqual( + cygrpc.CallError.ok, client_receive_initial_metadata_start_batch_result) + self.assertEqual( + cygrpc.CallError.ok, client_complete_rpc_start_batch_result) + self.assertEqual(cygrpc.CallError.ok, client_call_cancel_result) + self.assertIs(server_rpc_tag, server_rpc_event.tag) + self.assertEqual( + cygrpc.CompletionType.operation_complete, server_rpc_event.type) + self.assertIsInstance(server_rpc_event.operation_call, cygrpc.Call) + self.assertEqual(0, len(server_rpc_event.batch_operations)) + + +if __name__ == '__main__': + unittest.main(verbosity=2) |