kopia lustrzana https://github.com/cirospaciari/socketify.py
60 wiersze
2.1 KiB
Python
60 wiersze
2.1 KiB
Python
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from socketify import App
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import inspect
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def middleware(*functions):
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async def middleware_route(res, req):
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data = None
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some_async_as_run = False
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#cicle to all middlewares
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for function in functions:
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#detect if is coroutine or not
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if inspect.iscoroutinefunction(function):
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data = await function(res, req, data)
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#in async query string, arguments and headers are only valid until the first await
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if not some_async_as_run:
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#get_headers will preserve headers (and cookies) inside req, after await
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headers = req.get_headers()
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#get_parameters will preserve all params inside req after await
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params = req.get_parameters()
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#get queries will preserve all queries inside req after await
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queries = req.get_queries()
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#mark to only grab header, params and queries one time
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some_async_as_run = True
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else:
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#call middlewares
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data = function(res, req, data)
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#stops if returns Falsy
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if not data:
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break
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return middleware_route
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async def get_user(authorization):
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if authorization:
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#you can do something async here
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return { 'greeting': 'Hello, World' }
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return None
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async def auth(res, req, data=None):
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user = await get_user(req.get_header('authorization'))
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if not user:
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res.write_status(403).end("not authorized")
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return False
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#returns extra data
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return user
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def another_middie(res, req, data=None):
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#now we can mix sync and async and change the data here
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if isinstance(data, dict):
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gretting = data.get('greeting', '')
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data['greeting'] = f"{gretting} from another middie ;)"
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return data
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def home(res, req, user=None):
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res.end(user.get('greeting', None))
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app = App()
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app.get("/", middleware(auth, another_midie, home))
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app.listen(3000, lambda config: print("Listening on port http://localhost:%d now\n" % config.port))
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app.run()
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