是的,你可以 - 只需编写一些包装器并重新实现run_app https://github.com/aio-libs/aiohttp/blob/master/aiohttp/web.py#L412.
这是一个简单的例子。所有特定于应用程序的部分run_app
被转移到专用班级AppWrapper
. The MultiApp
只负责初始化所有配置的应用程序,继续运行循环并清理。
import asyncio
from aiohttp import web
class AppWrapper:
def __init__(self, aioapp, port, loop):
self.port = port
self.aioapp = aioapp
self.loop = loop
self.uris = []
self.servers = []
def initialize(self):
self.loop.run_until_complete(self.aioapp.startup())
handler = self.aioapp.make_handler(loop=self.loop)
server_creations, self.uris = web._make_server_creators(
handler, loop=self.loop, ssl_context=None,
host=None, port=self.port, path=None, sock=None,
backlog=128)
self.servers = self.loop.run_until_complete(
asyncio.gather(*server_creations, loop=self.loop)
)
def shutdown(self):
server_closures = []
for srv in self.servers:
srv.close()
server_closures.append(srv.wait_closed())
self.loop.run_until_complete(
asyncio.gather(*server_closures, loop=self.loop))
self.loop.run_until_complete(self.aioapp.shutdown())
def cleanup(self):
self.loop.run_until_complete(self.aioapp.cleanup())
def show_info(self):
print("======== Running on {} ========\n".format(', '.join(self.uris)))
class MultiApp:
def __init__(self, loop=None):
self._apps = []
self.user_supplied_loop = loop is not None
if loop is None:
self.loop = asyncio.get_event_loop()
else:
self.loop = loop
def configure_app(self, app, port):
app._set_loop(self.loop)
self._apps.append(
AppWrapper(app, port, self.loop)
)
def run_all(self):
try:
for app in self._apps:
app.initialize()
try:
for app in self._apps:
app.show_info()
print("(Press CTRL+C to quit)")
self.loop.run_forever()
except KeyboardInterrupt: # pragma: no cover
pass
finally:
for app in self._apps:
app.shutdown()
finally:
for app in self._apps:
app.cleanup()
if not self.user_supplied_loop:
self.loop.close()
Note: 注意内部的使用aiohttp
的方法,可能会发生变化。
现在我们来使用它:
from aiohttp import web
async def handle1(request):
return web.Response(text='SERVER 1')
async def handle2(request):
return web.Response(text='SERVER 2')
app1 = web.Application()
app1.router.add_get('/', handle1)
app2 = web.Application()
app2.router.add_get('/', handle2)
ma = MultiApp()
ma.configure_app(app1, port=8081)
ma.configure_app(app2, port=8071)
ma.run_all()
作为旁注,再想想为什么你需要这个。在几乎所有情况下,解耦都是更好的选择。在同一进程中设置多个端点会使它们相互依赖。我想到了一个具有“良好”推理的案例,即内部统计/调试端点。