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# 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.
"""Defines test client behaviors (UNARY/STREAMING) (SYNC/ASYNC)."""
import abc
import threading
import time
from concurrent import futures
from six.moves import queue
import grpc
from grpc.beta import implementations
from grpc.framework.interfaces.face import face
from src.proto.grpc.testing import messages_pb2
from src.proto.grpc.testing import services_pb2
from tests.unit import resources
from tests.unit.beta import test_utilities
_TIMEOUT = 60 * 60 * 24
class BenchmarkClient:
"""Benchmark client interface that exposes a non-blocking send_request()."""
__metaclass__ = abc.ABCMeta
def __init__(self, server, config, hist):
# Create the stub
host, port = server.split(':')
port = int(port)
if config.HasField('security_params'):
creds = implementations.ssl_channel_credentials(
resources.test_root_certificates())
channel = test_utilities.not_really_secure_channel(
host, port, creds, config.security_params.server_host_override)
else:
channel = implementations.insecure_channel(host, port)
connected_event = threading.Event()
def wait_for_ready(connectivity):
if connectivity == grpc.ChannelConnectivity.READY:
connected_event.set()
channel.subscribe(wait_for_ready, try_to_connect=True)
connected_event.wait()
if config.payload_config.WhichOneof('payload') == 'simple_params':
self._generic = False
self._stub = services_pb2.beta_create_BenchmarkService_stub(channel)
payload = messages_pb2.Payload(
body='\0' * config.payload_config.simple_params.req_size)
self._request = messages_pb2.SimpleRequest(
payload=payload,
response_size=config.payload_config.simple_params.resp_size)
else:
self._generic = True
self._stub = implementations.generic_stub(channel)
self._request = '\0' * config.payload_config.bytebuf_params.req_size
self._hist = hist
self._response_callbacks = []
def add_response_callback(self, callback):
"""callback will be invoked as callback(client, query_time)"""
self._response_callbacks.append(callback)
@abc.abstractmethod
def send_request(self):
"""Non-blocking wrapper for a client's request operation."""
raise NotImplementedError()
def start(self):
pass
def stop(self):
pass
def _handle_response(self, client, query_time):
self._hist.add(query_time * 1e9) # Report times in nanoseconds
for callback in self._response_callbacks:
callback(client, query_time)
class UnarySyncBenchmarkClient(BenchmarkClient):
def __init__(self, server, config, hist):
super(UnarySyncBenchmarkClient, self).__init__(server, config, hist)
self._pool = futures.ThreadPoolExecutor(
max_workers=config.outstanding_rpcs_per_channel)
def send_request(self):
# Send requests in seperate threads to support multiple outstanding rpcs
# (See src/proto/grpc/testing/control.proto)
self._pool.submit(self._dispatch_request)
def stop(self):
self._pool.shutdown(wait=True)
self._stub = None
def _dispatch_request(self):
start_time = time.time()
self._stub.UnaryCall(self._request, _TIMEOUT)
end_time = time.time()
self._handle_response(self, end_time - start_time)
class UnaryAsyncBenchmarkClient(BenchmarkClient):
def send_request(self):
# Use the Future callback api to support multiple outstanding rpcs
start_time = time.time()
response_future = self._stub.UnaryCall.future(self._request, _TIMEOUT)
response_future.add_done_callback(
lambda resp: self._response_received(start_time, resp))
def _response_received(self, start_time, resp):
resp.result()
end_time = time.time()
self._handle_response(self, end_time - start_time)
def stop(self):
self._stub = None
class _SyncStream(object):
def __init__(self, stub, generic, request, handle_response):
self._stub = stub
self._generic = generic
self._request = request
self._handle_response = handle_response
self._is_streaming = False
self._request_queue = queue.Queue()
self._send_time_queue = queue.Queue()
def send_request(self):
self._send_time_queue.put(time.time())
self._request_queue.put(self._request)
def start(self):
self._is_streaming = True
if self._generic:
stream_callable = self._stub.stream_stream(
'grpc.testing.BenchmarkService', 'StreamingCall')
else:
stream_callable = self._stub.StreamingCall
response_stream = stream_callable(self._request_generator(), _TIMEOUT)
for _ in response_stream:
self._handle_response(
self, time.time() - self._send_time_queue.get_nowait())
def stop(self):
self._is_streaming = False
def _request_generator(self):
while self._is_streaming:
try:
request = self._request_queue.get(block=True, timeout=1.0)
yield request
except queue.Empty:
pass
class StreamingSyncBenchmarkClient(BenchmarkClient):
def __init__(self, server, config, hist):
super(StreamingSyncBenchmarkClient, self).__init__(server, config, hist)
self._pool = futures.ThreadPoolExecutor(
max_workers=config.outstanding_rpcs_per_channel)
self._streams = [_SyncStream(self._stub, self._generic,
self._request, self._handle_response)
for _ in xrange(config.outstanding_rpcs_per_channel)]
self._curr_stream = 0
def send_request(self):
# Use a round_robin scheduler to determine what stream to send on
self._streams[self._curr_stream].send_request()
self._curr_stream = (self._curr_stream + 1) % len(self._streams)
def start(self):
for stream in self._streams:
self._pool.submit(stream.start)
def stop(self):
for stream in self._streams:
stream.stop()
self._pool.shutdown(wait=True)
self._stub = None
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