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authorGravatar Nathaniel Manista <nathaniel@google.com>2016-06-03 21:08:57 +0000
committerGravatar Nathaniel Manista <nathaniel@google.com>2016-06-03 21:08:57 +0000
commitdebd1517b7c0e40a3be3a1de8774d6368c040a81 (patch)
tree7c51e950a67b21776d7f25865df843f7d18a0b9e
parent84f71932eaf8b601355189896fc5b91449ac82d2 (diff)
A Cython-layer read-not-all-responses test
-rw-r--r--src/python/grpcio/tests/tests.json1
-rw-r--r--src/python/grpcio/tests/unit/_cython/_read_some_but_not_all_responses_test.py251
2 files changed, 252 insertions, 0 deletions
diff --git a/src/python/grpcio/tests/tests.json b/src/python/grpcio/tests/tests.json
index 81458b11da..8dc47bf69d 100644
--- a/src/python/grpcio/tests/tests.json
+++ b/src/python/grpcio/tests/tests.json
@@ -48,6 +48,7 @@
"_low_test.HangingServerShutdown",
"_low_test.InsecureServerInsecureClient",
"_not_found_test.NotFoundTest",
+ "_read_some_but_not_all_responses_test.ReadSomeButNotAllResponsesTest",
"_rpc_test.RPCTest",
"_sanity_test.Sanity",
"_secure_interop_test.SecureInteropTest",
diff --git a/src/python/grpcio/tests/unit/_cython/_read_some_but_not_all_responses_test.py b/src/python/grpcio/tests/unit/_cython/_read_some_but_not_all_responses_test.py
new file mode 100644
index 0000000000..6ae7a90fbe
--- /dev/null
+++ b/src/python/grpcio/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('[::]:0')
+ server.start()
+ channel = cygrpc.Channel('localhost:{}'.format(port))
+
+ 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)