302 lines
9.8 KiB
Python
302 lines
9.8 KiB
Python
import asyncio
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from asyncio import sleep as aio_sleep
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from json import JSONDecodeError
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import httpx
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from sanic import Sanic, server
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from sanic.response import text
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from sanic.testing import HOST, PORT, SanicTestClient
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CONFIG_FOR_TESTS = {"KEEP_ALIVE_TIMEOUT": 2, "KEEP_ALIVE": True}
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old_conn = None
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class ReusableSanicConnectionPool(
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httpx.dispatch.connection_pool.ConnectionPool
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):
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async def acquire_connection(self, origin, timeout):
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global old_conn
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connection = self.pop_connection(origin)
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if connection is None:
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pool_timeout = None if timeout is None else timeout.pool_timeout
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await self.max_connections.acquire(timeout=pool_timeout)
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connection = httpx.dispatch.connection.HTTPConnection(
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origin,
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verify=self.verify,
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cert=self.cert,
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http2=self.http2,
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backend=self.backend,
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release_func=self.release_connection,
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trust_env=self.trust_env,
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uds=self.uds,
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)
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self.active_connections.add(connection)
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if old_conn is not None:
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if old_conn != connection:
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raise RuntimeError(
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"We got a new connection, wanted the same one!"
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)
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old_conn = connection
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return connection
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class ResusableSanicSession(httpx.Client):
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def __init__(self, *args, **kwargs) -> None:
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dispatch = ReusableSanicConnectionPool()
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super().__init__(dispatch=dispatch, *args, **kwargs)
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class ReuseableSanicTestClient(SanicTestClient):
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def __init__(self, app, loop=None):
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super().__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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def get_new_session(self):
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return ResusableSanicSession()
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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,
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method="get",
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uri="/",
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gather_request=True,
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debug=False,
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server_kwargs=None,
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*request_args,
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**request_kwargs,
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):
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loop = self._loop
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results = [None, None]
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exceptions = []
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server_kwargs = server_kwargs or {"return_asyncio_server": True}
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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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if uri.startswith(
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("http:", "https:", "ftp:", "ftps://", "//", "ws:", "wss:")
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):
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url = uri
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else:
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uri = uri if uri.startswith("/") else f"/{uri}"
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scheme = "http"
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url = f"{scheme}://{HOST}:{PORT}{uri}"
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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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response = await self._local_request(
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method, url, *request_args, **request_kwargs
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)
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results[-1] = response
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except Exception as e2:
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exceptions.append(e2)
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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(
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host=HOST, debug=debug, port=PORT, **server_kwargs
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)
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server.trigger_events(
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self.app.listeners["before_server_start"], loop
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)
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try:
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loop._stopping = False
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_server = loop.run_until_complete(_server_co)
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except Exception as e1:
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raise e1
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self._server = _server
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server.trigger_events(self.app.listeners["after_server_start"], loop)
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self.app.listeners["after_server_start"].pop()
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if exceptions:
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raise ValueError(f"Exception during request: {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 Exception:
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raise ValueError(
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f"Request and response object expected, got ({results})"
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)
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else:
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try:
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return results[-1]
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except Exception:
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raise ValueError(
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f"Request object expected, got ({results})"
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)
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def kill_server(self):
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try:
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if self._server:
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self._server.close()
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self._loop.run_until_complete(self._server.wait_closed())
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self._server = None
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if self._session:
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self._loop.run_until_complete(self._session.close())
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self._session = None
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except Exception as e3:
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raise e3
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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, url, *args, **kwargs):
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raw_cookies = kwargs.pop("raw_cookies", None)
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request_keepalive = kwargs.pop(
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"request_keepalive", CONFIG_FOR_TESTS["KEEP_ALIVE_TIMEOUT"]
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)
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if not self._session:
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self._session = self.get_new_session()
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try:
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response = await getattr(self._session, method.lower())(
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url, verify=False, timeout=request_keepalive, *args, **kwargs
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)
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except NameError:
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raise Exception(response.status_code)
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try:
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response.json = response.json()
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except (JSONDecodeError, UnicodeDecodeError):
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response.json = None
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response.body = await response.read()
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response.status = response.status_code
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response.content_type = response.headers.get("content-type")
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if raw_cookies:
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response.raw_cookies = {}
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for cookie in response.cookies:
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response.raw_cookies[cookie.name] = cookie
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return response
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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.config.update(CONFIG_FOR_TESTS)
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keep_alive_app_client_timeout.config.update(CONFIG_FOR_TESTS)
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keep_alive_app_server_timeout.config.update(CONFIG_FOR_TESTS)
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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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try:
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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 = {"Connection": "keep-alive"}
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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")
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assert response.status == 200
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assert response.text == "OK"
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finally:
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client.kill_server()
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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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try:
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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, loop)
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headers = {"Connection": "keep-alive"}
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try:
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request, response = client.get(
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"/1", headers=headers, request_keepalive=1
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)
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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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request, response = client.get("/1", 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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finally:
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client.kill_server()
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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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try:
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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, loop)
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headers = {"Connection": "keep-alive"}
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try:
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request, response = client.get(
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"/1", headers=headers, request_keepalive=60
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)
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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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request, response = client.get("/1", request_keepalive=60)
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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 (
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"Connection reset" in exception.args[0]
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or "got a new connection" in exception.args[0]
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)
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finally:
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client.kill_server()
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