sanic/tests/test_keep_alive_timeout.py
2017-09-12 13:09:42 +10:00

255 lines
8.9 KiB
Python

from json import JSONDecodeError
from sanic import Sanic
from time import sleep as sync_sleep
import asyncio
from sanic.response import text
from sanic.config import Config
from sanic import server
import aiohttp
from aiohttp import TCPConnector
from sanic.testing import SanicTestClient, HOST, PORT
class ReuseableTCPConnector(TCPConnector):
def __init__(self, *args, **kwargs):
super(ReuseableTCPConnector, self).__init__(*args, **kwargs)
self.old_proto = None
@asyncio.coroutine
def connect(self, req):
new_conn = yield from super(ReuseableTCPConnector, self)\
.connect(req)
if self.old_proto is not None:
if self.old_proto != new_conn.protocol:
raise RuntimeError(
"We got a new connection, wanted the same one!")
self.old_proto = new_conn.protocol
return new_conn
class ReuseableSanicTestClient(SanicTestClient):
def __init__(self, app, loop=None):
super(ReuseableSanicTestClient, self).__init__(app)
if loop is None:
loop = asyncio.get_event_loop()
self._loop = loop
self._server = None
self._tcp_connector = None
self._session = None
# Copied from SanicTestClient, but with some changes to reuse the
# same loop for the same app.
def _sanic_endpoint_test(
self, method='get', uri='/', gather_request=True,
debug=False, server_kwargs={},
*request_args, **request_kwargs):
loop = self._loop
results = [None, None]
exceptions = []
do_kill_server = request_kwargs.pop('end_server', False)
if gather_request:
def _collect_request(request):
if results[0] is None:
results[0] = request
self.app.request_middleware.appendleft(_collect_request)
@self.app.listener('after_server_start')
async def _collect_response(loop):
try:
if do_kill_server:
request_kwargs['end_session'] = True
response = await self._local_request(
method, uri, *request_args,
**request_kwargs)
results[-1] = response
except Exception as e:
import traceback
traceback.print_tb(e.__traceback__)
exceptions.append(e)
#Don't stop here! self.app.stop()
if self._server is not None:
_server = self._server
else:
_server_co = self.app.create_server(host=HOST, debug=debug,
port=PORT, **server_kwargs)
server.trigger_events(
self.app.listeners['before_server_start'], loop)
try:
loop._stopping = False
http_server = loop.run_until_complete(_server_co)
except Exception as e:
raise e
self._server = _server = http_server
server.trigger_events(
self.app.listeners['after_server_start'], loop)
self.app.listeners['after_server_start'].pop()
if do_kill_server:
try:
_server.close()
self._server = None
loop.run_until_complete(_server.wait_closed())
self.app.stop()
except Exception as e:
exceptions.append(e)
if exceptions:
raise ValueError(
"Exception during request: {}".format(exceptions))
if gather_request:
self.app.request_middleware.pop()
try:
request, response = results
return request, response
except:
raise ValueError(
"Request and response object expected, got ({})".format(
results))
else:
try:
return results[-1]
except:
raise ValueError(
"Request object expected, got ({})".format(results))
# Copied from SanicTestClient, but with some changes to reuse the
# same TCPConnection and the sane ClientSession more than once.
# Note, you cannot use the same session if you are in a _different_
# loop, so the changes above are required too.
async def _local_request(self, method, uri, cookies=None, *args,
**kwargs):
request_keepalive = kwargs.pop('request_keepalive',
Config.KEEP_ALIVE_TIMEOUT)
if uri.startswith(('http:', 'https:', 'ftp:', 'ftps://' '//')):
url = uri
else:
url = 'http://{host}:{port}{uri}'.format(
host=HOST, port=PORT, uri=uri)
do_kill_session = kwargs.pop('end_session', False)
if self._session:
session = self._session
else:
if self._tcp_connector:
conn = self._tcp_connector
else:
conn = ReuseableTCPConnector(verify_ssl=False,
keepalive_timeout=
request_keepalive)
self._tcp_connector = conn
session = aiohttp.ClientSession(cookies=cookies,
connector=conn)
self._session = session
async with getattr(session, method.lower())(
url, *args, **kwargs) as response:
try:
response.text = await response.text()
except UnicodeDecodeError:
response.text = None
try:
response.json = await response.json()
except (JSONDecodeError,
UnicodeDecodeError,
aiohttp.ClientResponseError):
response.json = None
response.body = await response.read()
if do_kill_session:
session.close()
self._session = None
return response
Config.KEEP_ALIVE_TIMEOUT = 2
Config.KEEP_ALIVE = True
keep_alive_timeout_app_reuse = Sanic('test_ka_timeout_reuse')
keep_alive_app_client_timeout = Sanic('test_ka_client_timeout')
keep_alive_app_server_timeout = Sanic('test_ka_server_timeout')
@keep_alive_timeout_app_reuse.route('/1')
async def handler1(request):
return text('OK')
@keep_alive_app_client_timeout.route('/1')
async def handler2(request):
return text('OK')
@keep_alive_app_server_timeout.route('/1')
async def handler3(request):
return text('OK')
def test_keep_alive_timeout_reuse():
"""If the server keep-alive timeout and client keep-alive timeout are
both longer than the delay, the client _and_ server will successfully
reuse the existing connection."""
loop = asyncio.get_event_loop()
client = ReuseableSanicTestClient(keep_alive_timeout_app_reuse, loop)
headers = {
'Connection': 'keep-alive'
}
request, response = client.get('/1', headers=headers)
assert response.status == 200
assert response.text == 'OK'
sync_sleep(1)
request, response = client.get('/1', end_server=True)
assert response.status == 200
assert response.text == 'OK'
def test_keep_alive_client_timeout():
"""If the server keep-alive timeout is longer than the client
keep-alive timeout, client will try to create a new connection here."""
loop = asyncio.get_event_loop()
client = ReuseableSanicTestClient(keep_alive_app_client_timeout,
loop)
headers = {
'Connection': 'keep-alive'
}
request, response = client.get('/1', headers=headers,
request_keepalive=1)
assert response.status == 200
assert response.text == 'OK'
sync_sleep(3)
exception = None
try:
request, response = client.get('/1', end_server=True)
except ValueError as e:
exception = e
assert exception is not None
assert isinstance(exception, ValueError)
assert "got a new connection" in exception.args[0]
def test_keep_alive_server_timeout():
"""If the client keep-alive timeout is longer than the server
keep-alive timeout, the client will get a 'Connection reset' error."""
loop = asyncio.get_event_loop()
client = ReuseableSanicTestClient(keep_alive_app_server_timeout,
loop)
headers = {
'Connection': 'keep-alive'
}
request, response = client.get('/1', headers=headers,
request_keepalive=5)
assert response.status == 200
assert response.text == 'OK'
sync_sleep(3)
exception = None
try:
request, response = client.get('/1', end_server=True)
except ValueError as e:
exception = e
assert exception is not None
assert isinstance(exception, ValueError)
assert "Connection reset" in exception.args[0]