1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
# Copyright 2021 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.
import sys
import unittest
import gevent
from gevent.pool import Group
import grpc
from src.proto.grpc.testing import messages_pb2
from src.proto.grpc.testing import test_pb2_grpc
from tests_gevent.unit._test_server import start_test_server
_UNARY_CALL_METHOD_WITH_SLEEP = '/grpc.testing.TestService/UnaryCallWithSleep'
class CloseChannelTest(unittest.TestCase):
def setUp(self):
self._server_target, self._server = start_test_server()
self._channel = grpc.insecure_channel(self._server_target)
self._unhandled_exception = False
sys.excepthook = self._global_exception_handler
def tearDown(self):
self._channel.close()
self._server.stop(None)
def test_graceful_close(self):
stub = test_pb2_grpc.TestServiceStub(self._channel)
_, response = stub.UnaryCall.with_call(messages_pb2.SimpleRequest())
self._channel.close()
self.assertEqual(grpc.StatusCode.OK, response.code())
def test_graceful_close_in_greenlet(self):
group = Group()
stub = test_pb2_grpc.TestServiceStub(self._channel)
greenlet = group.spawn(self._run_client, stub.UnaryCall)
# release loop so that greenlet can take control
gevent.sleep()
self._channel.close()
group.killone(greenlet)
self.assertFalse(self._unhandled_exception, "Unhandled GreenletExit")
try:
greenlet.get()
except Exception as e: # pylint: disable=broad-except
self.fail(f"Unexpected exception in greenlet: {e}")
def test_ungraceful_close_in_greenlet(self):
group = Group()
UnaryCallWithSleep = self._channel.unary_unary(
_UNARY_CALL_METHOD_WITH_SLEEP,
request_serializer=messages_pb2.SimpleRequest.SerializeToString,
response_deserializer=messages_pb2.SimpleResponse.FromString,
)
greenlet = group.spawn(self._run_client, UnaryCallWithSleep)
# release loop so that greenlet can take control
gevent.sleep()
group.killone(greenlet)
self.assertFalse(self._unhandled_exception, "Unhandled GreenletExit")
def test_kill_greenlet_with_generic_exception(self):
group = Group()
UnaryCallWithSleep = self._channel.unary_unary(
_UNARY_CALL_METHOD_WITH_SLEEP,
request_serializer=messages_pb2.SimpleRequest.SerializeToString,
response_deserializer=messages_pb2.SimpleResponse.FromString,
)
greenlet = group.spawn(self._run_client, UnaryCallWithSleep)
# release loop so that greenlet can take control
gevent.sleep()
group.killone(greenlet, exception=Exception)
self.assertFalse(self._unhandled_exception, "Unhandled exception")
self.assertRaises(Exception, greenlet.get)
def _run_client(self, call):
try:
call.with_call(messages_pb2.SimpleRequest())
except grpc.RpcError as e:
if e.code() != grpc.StatusCode.CANCELLED:
raise
def _global_exception_handler(self, exctype, value, tb):
if exctype == gevent.GreenletExit:
self._unhandled_exception = True
return
sys.__excepthook__(exctype, value, tb)
if __name__ == '__main__':
unittest.main(verbosity=2)
|
