You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
237 lines
7.7 KiB
237 lines
7.7 KiB
# Author: Ovidiu Predescu
|
|
# Date: July 2011
|
|
#
|
|
# 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 asyncio
|
|
import logging
|
|
import signal
|
|
import unittest
|
|
import warnings
|
|
|
|
from tornado.escape import utf8
|
|
from tornado import gen
|
|
from tornado.httpclient import AsyncHTTPClient
|
|
from tornado.httpserver import HTTPServer
|
|
from tornado.ioloop import IOLoop
|
|
from tornado.testing import bind_unused_port, AsyncTestCase, gen_test
|
|
from tornado.web import RequestHandler, Application
|
|
|
|
try:
|
|
from twisted.internet.defer import ( # type: ignore
|
|
Deferred,
|
|
inlineCallbacks,
|
|
returnValue,
|
|
)
|
|
from twisted.internet.protocol import Protocol # type: ignore
|
|
from twisted.internet.asyncioreactor import AsyncioSelectorReactor # type: ignore
|
|
from twisted.web.client import Agent, readBody # type: ignore
|
|
from twisted.web.resource import Resource # type: ignore
|
|
from twisted.web.server import Site # type: ignore
|
|
|
|
have_twisted = True
|
|
except ImportError:
|
|
have_twisted = False
|
|
else:
|
|
# Not used directly but needed for `yield deferred` to work.
|
|
import tornado.platform.twisted # noqa: F401
|
|
|
|
skipIfNoTwisted = unittest.skipUnless(have_twisted, "twisted module not present")
|
|
|
|
|
|
def save_signal_handlers():
|
|
saved = {}
|
|
for sig in [signal.SIGINT, signal.SIGTERM, signal.SIGCHLD]:
|
|
saved[sig] = signal.getsignal(sig)
|
|
if "twisted" in repr(saved):
|
|
# This indicates we're not cleaning up after ourselves properly.
|
|
raise Exception("twisted signal handlers already installed")
|
|
return saved
|
|
|
|
|
|
def restore_signal_handlers(saved):
|
|
for sig, handler in saved.items():
|
|
signal.signal(sig, handler)
|
|
|
|
|
|
# Test various combinations of twisted and tornado http servers,
|
|
# http clients, and event loop interfaces.
|
|
|
|
|
|
@skipIfNoTwisted
|
|
class CompatibilityTests(unittest.TestCase):
|
|
def setUp(self):
|
|
self.saved_signals = save_signal_handlers()
|
|
self.io_loop = IOLoop()
|
|
self.io_loop.make_current()
|
|
self.reactor = AsyncioSelectorReactor()
|
|
|
|
def tearDown(self):
|
|
self.reactor.disconnectAll()
|
|
self.io_loop.clear_current()
|
|
self.io_loop.close(all_fds=True)
|
|
restore_signal_handlers(self.saved_signals)
|
|
|
|
def start_twisted_server(self):
|
|
class HelloResource(Resource):
|
|
isLeaf = True
|
|
|
|
def render_GET(self, request):
|
|
return b"Hello from twisted!"
|
|
|
|
site = Site(HelloResource())
|
|
port = self.reactor.listenTCP(0, site, interface="127.0.0.1")
|
|
self.twisted_port = port.getHost().port
|
|
|
|
def start_tornado_server(self):
|
|
class HelloHandler(RequestHandler):
|
|
def get(self):
|
|
self.write("Hello from tornado!")
|
|
|
|
app = Application([("/", HelloHandler)], log_function=lambda x: None)
|
|
server = HTTPServer(app)
|
|
sock, self.tornado_port = bind_unused_port()
|
|
server.add_sockets([sock])
|
|
|
|
def run_reactor(self):
|
|
# In theory, we can run the event loop through Tornado,
|
|
# Twisted, or asyncio interfaces. However, since we're trying
|
|
# to avoid installing anything as the global event loop, only
|
|
# the twisted interface gets everything wired up correectly
|
|
# without extra hacks. This method is a part of a
|
|
# no-longer-used generalization that allowed us to test
|
|
# different combinations.
|
|
self.stop_loop = self.reactor.stop
|
|
self.stop = self.reactor.stop
|
|
self.reactor.run()
|
|
|
|
def tornado_fetch(self, url, runner):
|
|
client = AsyncHTTPClient()
|
|
fut = asyncio.ensure_future(client.fetch(url))
|
|
fut.add_done_callback(lambda f: self.stop_loop())
|
|
runner()
|
|
return fut.result()
|
|
|
|
def twisted_fetch(self, url, runner):
|
|
# http://twistedmatrix.com/documents/current/web/howto/client.html
|
|
chunks = []
|
|
client = Agent(self.reactor)
|
|
d = client.request(b"GET", utf8(url))
|
|
|
|
class Accumulator(Protocol):
|
|
def __init__(self, finished):
|
|
self.finished = finished
|
|
|
|
def dataReceived(self, data):
|
|
chunks.append(data)
|
|
|
|
def connectionLost(self, reason):
|
|
self.finished.callback(None)
|
|
|
|
def callback(response):
|
|
finished = Deferred()
|
|
response.deliverBody(Accumulator(finished))
|
|
return finished
|
|
|
|
d.addCallback(callback)
|
|
|
|
def shutdown(failure):
|
|
if hasattr(self, "stop_loop"):
|
|
self.stop_loop()
|
|
elif failure is not None:
|
|
# loop hasn't been initialized yet; try our best to
|
|
# get an error message out. (the runner() interaction
|
|
# should probably be refactored).
|
|
try:
|
|
failure.raiseException()
|
|
except:
|
|
logging.error("exception before starting loop", exc_info=True)
|
|
|
|
d.addBoth(shutdown)
|
|
runner()
|
|
self.assertTrue(chunks)
|
|
return b"".join(chunks)
|
|
|
|
def twisted_coroutine_fetch(self, url, runner):
|
|
body = [None]
|
|
|
|
@gen.coroutine
|
|
def f():
|
|
# This is simpler than the non-coroutine version, but it cheats
|
|
# by reading the body in one blob instead of streaming it with
|
|
# a Protocol.
|
|
client = Agent(self.reactor)
|
|
response = yield client.request(b"GET", utf8(url))
|
|
with warnings.catch_warnings():
|
|
# readBody has a buggy DeprecationWarning in Twisted 15.0:
|
|
# https://twistedmatrix.com/trac/changeset/43379
|
|
warnings.simplefilter("ignore", category=DeprecationWarning)
|
|
body[0] = yield readBody(response)
|
|
self.stop_loop()
|
|
|
|
self.io_loop.add_callback(f)
|
|
runner()
|
|
return body[0]
|
|
|
|
def testTwistedServerTornadoClientReactor(self):
|
|
self.start_twisted_server()
|
|
response = self.tornado_fetch(
|
|
"http://127.0.0.1:%d" % self.twisted_port, self.run_reactor
|
|
)
|
|
self.assertEqual(response.body, b"Hello from twisted!")
|
|
|
|
def testTornadoServerTwistedClientReactor(self):
|
|
self.start_tornado_server()
|
|
response = self.twisted_fetch(
|
|
"http://127.0.0.1:%d" % self.tornado_port, self.run_reactor
|
|
)
|
|
self.assertEqual(response, b"Hello from tornado!")
|
|
|
|
def testTornadoServerTwistedCoroutineClientReactor(self):
|
|
self.start_tornado_server()
|
|
response = self.twisted_coroutine_fetch(
|
|
"http://127.0.0.1:%d" % self.tornado_port, self.run_reactor
|
|
)
|
|
self.assertEqual(response, b"Hello from tornado!")
|
|
|
|
|
|
@skipIfNoTwisted
|
|
class ConvertDeferredTest(AsyncTestCase):
|
|
@gen_test
|
|
def test_success(self):
|
|
@inlineCallbacks
|
|
def fn():
|
|
if False:
|
|
# inlineCallbacks doesn't work with regular functions;
|
|
# must have a yield even if it's unreachable.
|
|
yield
|
|
returnValue(42)
|
|
|
|
res = yield fn()
|
|
self.assertEqual(res, 42)
|
|
|
|
@gen_test
|
|
def test_failure(self):
|
|
@inlineCallbacks
|
|
def fn():
|
|
if False:
|
|
yield
|
|
1 / 0
|
|
|
|
with self.assertRaises(ZeroDivisionError):
|
|
yield fn()
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|