294 lines
11 KiB
Python
294 lines
11 KiB
Python
from json import JSONDecodeError
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from sanic import Sanic
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import asyncio
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from asyncio import sleep as aio_sleep
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from sanic.response import text
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from sanic.config import Config
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from sanic import server
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import aiohttp
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from aiohttp import TCPConnector
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from sanic.testing import SanicTestClient, HOST, PORT, version
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aiohttp_version = version.parse(aiohttp.__version__)
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class ReuseableTCPConnector(TCPConnector):
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def __init__(self, *args, **kwargs):
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super(ReuseableTCPConnector, self).__init__(*args, **kwargs)
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self.old_proto = None
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if aiohttp_version >= version.parse('3.3.0'):
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async def connect(self, req, traces, timeout):
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new_conn = await super(ReuseableTCPConnector, self)\
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.connect(req, traces, timeout)
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if self.old_proto is not None:
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if self.old_proto != new_conn._protocol:
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raise RuntimeError(
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"We got a new connection, wanted the same one!")
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print(new_conn.__dict__)
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self.old_proto = new_conn._protocol
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return new_conn
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elif aiohttp_version >= version.parse('3.0.0'):
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async def connect(self, req, traces=None):
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new_conn = await super(ReuseableTCPConnector, self)\
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.connect(req, traces=traces)
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if self.old_proto is not None:
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if self.old_proto != new_conn._protocol:
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raise RuntimeError(
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"We got a new connection, wanted the same one!")
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print(new_conn.__dict__)
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self.old_proto = new_conn._protocol
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return new_conn
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else:
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async def connect(self, req):
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new_conn = await super(ReuseableTCPConnector, self)\
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.connect(req)
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if self.old_proto is not None:
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if self.old_proto != new_conn._protocol:
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raise RuntimeError(
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"We got a new connection, wanted the same one!")
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print(new_conn.__dict__)
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self.old_proto = new_conn._protocol
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return new_conn
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class ReuseableSanicTestClient(SanicTestClient):
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def __init__(self, app, loop=None):
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super(ReuseableSanicTestClient, self).__init__(app)
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if loop is None:
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loop = asyncio.get_event_loop()
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self._loop = loop
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self._server = None
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self._tcp_connector = None
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self._session = None
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# Copied from SanicTestClient, but with some changes to reuse the
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# same loop for the same app.
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def _sanic_endpoint_test(
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self, method='get', uri='/', gather_request=True,
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debug=False, server_kwargs={},
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*request_args, **request_kwargs):
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loop = self._loop
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results = [None, None]
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exceptions = []
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do_kill_server = request_kwargs.pop('end_server', False)
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if gather_request:
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def _collect_request(request):
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if results[0] is None:
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results[0] = request
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self.app.request_middleware.appendleft(_collect_request)
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@self.app.listener('after_server_start')
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async def _collect_response(loop):
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try:
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if do_kill_server:
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request_kwargs['end_session'] = True
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response = await self._local_request(
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method, uri, *request_args,
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**request_kwargs)
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results[-1] = response
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except Exception as e2:
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import traceback
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traceback.print_tb(e2.__traceback__)
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exceptions.append(e2)
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# Don't stop here! self.app.stop()
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if self._server is not None:
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_server = self._server
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else:
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_server_co = self.app.create_server(host=HOST, debug=debug,
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port=PORT, **server_kwargs)
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server.trigger_events(
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self.app.listeners['before_server_start'], loop)
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try:
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loop._stopping = False
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http_server = loop.run_until_complete(_server_co)
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except Exception as e1:
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import traceback
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traceback.print_tb(e1.__traceback__)
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raise e1
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self._server = _server = http_server
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server.trigger_events(
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self.app.listeners['after_server_start'], loop)
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self.app.listeners['after_server_start'].pop()
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if do_kill_server:
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try:
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_server.close()
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self._server = None
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loop.run_until_complete(_server.wait_closed())
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self.app.stop()
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except Exception as e3:
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import traceback
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traceback.print_tb(e3.__traceback__)
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exceptions.append(e3)
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if exceptions:
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raise ValueError(
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"Exception during request: {}".format(exceptions))
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if gather_request:
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self.app.request_middleware.pop()
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try:
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request, response = results
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return request, response
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except:
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raise ValueError(
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"Request and response object expected, got ({})".format(
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results))
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else:
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try:
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return results[-1]
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except:
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raise ValueError(
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"Request object expected, got ({})".format(results))
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# Copied from SanicTestClient, but with some changes to reuse the
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# same TCPConnection and the sane ClientSession more than once.
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# Note, you cannot use the same session if you are in a _different_
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# loop, so the changes above are required too.
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async def _local_request(self, method, uri, cookies=None, *args,
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**kwargs):
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request_keepalive = kwargs.pop('request_keepalive',
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Config.KEEP_ALIVE_TIMEOUT)
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if uri.startswith(('http:', 'https:', 'ftp:', 'ftps://' '//')):
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url = uri
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else:
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url = 'http://{host}:{port}{uri}'.format(
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host=HOST, port=self.port, uri=uri)
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do_kill_session = kwargs.pop('end_session', False)
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if self._session:
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session = self._session
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else:
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if self._tcp_connector:
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conn = self._tcp_connector
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else:
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conn = ReuseableTCPConnector(verify_ssl=False,
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loop=self._loop,
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keepalive_timeout=
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request_keepalive)
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self._tcp_connector = conn
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session = aiohttp.ClientSession(cookies=cookies,
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connector=conn,
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loop=self._loop)
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self._session = session
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async with getattr(session, method.lower())(
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url, *args, **kwargs) as response:
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try:
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response.text = await response.text()
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except UnicodeDecodeError:
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response.text = None
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try:
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response.json = await response.json()
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except (JSONDecodeError,
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UnicodeDecodeError,
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aiohttp.ClientResponseError):
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response.json = None
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response.body = await response.read()
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if do_kill_session:
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await session.close()
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self._session = None
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return response
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Config.KEEP_ALIVE_TIMEOUT = 2
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Config.KEEP_ALIVE = True
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keep_alive_timeout_app_reuse = Sanic('test_ka_timeout_reuse')
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keep_alive_app_client_timeout = Sanic('test_ka_client_timeout')
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keep_alive_app_server_timeout = Sanic('test_ka_server_timeout')
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@keep_alive_timeout_app_reuse.route('/1')
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async def handler1(request):
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return text('OK')
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@keep_alive_app_client_timeout.route('/1')
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async def handler2(request):
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return text('OK')
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@keep_alive_app_server_timeout.route('/1')
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async def handler3(request):
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return text('OK')
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def test_keep_alive_timeout_reuse():
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"""If the server keep-alive timeout and client keep-alive timeout are
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both longer than the delay, the client _and_ server will successfully
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reuse the existing connection."""
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loop = asyncio.new_event_loop()
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asyncio.set_event_loop(loop)
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client = ReuseableSanicTestClient(keep_alive_timeout_app_reuse, loop)
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headers = {
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'Connection': 'keep-alive'
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}
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request, response = client.get('/1', headers=headers)
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assert response.status == 200
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assert response.text == 'OK'
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loop.run_until_complete(aio_sleep(1))
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request, response = client.get('/1', end_server=True)
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assert response.status == 200
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assert response.text == 'OK'
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def test_keep_alive_client_timeout():
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"""If the server keep-alive timeout is longer than the client
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keep-alive timeout, client will try to create a new connection here."""
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loop = asyncio.new_event_loop()
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asyncio.set_event_loop(loop)
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client = ReuseableSanicTestClient(keep_alive_app_client_timeout,
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loop)
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headers = {
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'Connection': 'keep-alive'
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}
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request, response = client.get('/1', headers=headers,
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request_keepalive=1)
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assert response.status == 200
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assert response.text == 'OK'
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loop.run_until_complete(aio_sleep(2))
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exception = None
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try:
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request, response = client.get('/1', end_server=True,
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request_keepalive=1)
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except ValueError as e:
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exception = e
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assert exception is not None
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assert isinstance(exception, ValueError)
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assert "got a new connection" in exception.args[0]
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def test_keep_alive_server_timeout():
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"""If the client keep-alive timeout is longer than the server
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keep-alive timeout, the client will either a 'Connection reset' error
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_or_ a new connection. Depending on how the event-loop handles the
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broken server connection."""
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loop = asyncio.new_event_loop()
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asyncio.set_event_loop(loop)
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client = ReuseableSanicTestClient(keep_alive_app_server_timeout,
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loop)
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headers = {
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'Connection': 'keep-alive'
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}
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request, response = client.get('/1', headers=headers,
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request_keepalive=60)
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assert response.status == 200
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assert response.text == 'OK'
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loop.run_until_complete(aio_sleep(3))
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exception = None
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try:
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request, response = client.get('/1', request_keepalive=60,
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end_server=True)
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except ValueError as e:
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exception = e
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assert exception is not None
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assert isinstance(exception, ValueError)
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assert "Connection reset" in exception.args[0] or \
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"got a new connection" in exception.args[0]
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