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# Copyright 2017 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.
"""Common utilities for tests of the Cython layer of gRPC Python."""
import collections
import threading
from grpc._cython import cygrpc
RPC_COUNT = 4000
EMPTY_FLAGS = 0
INVOCATION_METADATA = (
('client-md-key', 'client-md-key'),
('client-md-key-bin', b'\x00\x01' * 3000),
)
INITIAL_METADATA = (
('server-initial-md-key', 'server-initial-md-value'),
('server-initial-md-key-bin', b'\x00\x02' * 3000),
)
TRAILING_METADATA = (
('server-trailing-md-key', 'server-trailing-md-value'),
('server-trailing-md-key-bin', b'\x00\x03' * 3000),
)
class QueueDriver(object):
def __init__(self, condition, completion_queue):
self._condition = condition
self._completion_queue = completion_queue
self._due = collections.defaultdict(int)
self._events = collections.defaultdict(list)
def add_due(self, tags):
if not self._due:
def in_thread():
while True:
event = self._completion_queue.poll()
with self._condition:
self._events[event.tag].append(event)
self._due[event.tag] -= 1
self._condition.notify_all()
if self._due[event.tag] <= 0:
self._due.pop(event.tag)
if not self._due:
return
thread = threading.Thread(target=in_thread)
thread.start()
for tag in tags:
self._due[tag] += 1
def event_with_tag(self, tag):
with self._condition:
while True:
if self._events[tag]:
return self._events[tag].pop(0)
else:
self._condition.wait()
def execute_many_times(behavior):
return tuple(behavior() for _ in range(RPC_COUNT))
class OperationResult(
collections.namedtuple('OperationResult', (
'start_batch_result',
'completion_type',
'success',
))):
pass
SUCCESSFUL_OPERATION_RESULT = OperationResult(
cygrpc.CallError.ok, cygrpc.CompletionType.operation_complete, True)
class RpcTest(object):
def setUp(self):
self.server_completion_queue = cygrpc.CompletionQueue()
self.server = cygrpc.Server([(b'grpc.so_reuseport', 0)])
self.server.register_completion_queue(self.server_completion_queue)
port = self.server.add_http2_port(b'[::]:0')
self.server.start()
self.channel = cygrpc.Channel('localhost:{}'.format(port).encode(), [],
None)
self._server_shutdown_tag = 'server_shutdown_tag'
self.server_condition = threading.Condition()
self.server_driver = QueueDriver(self.server_condition,
self.server_completion_queue)
with self.server_condition:
self.server_driver.add_due({
self._server_shutdown_tag,
})
self.client_condition = threading.Condition()
self.client_completion_queue = cygrpc.CompletionQueue()
self.client_driver = QueueDriver(self.client_condition,
self.client_completion_queue)
def tearDown(self):
self.server.shutdown(self.server_completion_queue,
self._server_shutdown_tag)
self.server.cancel_all_calls()
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