72 lines
2.3 KiB
ReStructuredText
72 lines
2.3 KiB
ReStructuredText
How to Make a Simple Server With Authorization
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==============================================
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.. code::python
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import asyncio
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from aiohttp import web
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@asyncio.coroutine
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def root_handler(request):
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text = "Alive and kicking!"
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return web.Response(body=text.encode('utf-8'))
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# option 2: auth at a higher level?
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# set user_id and allowed in the wsgo handler
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@protect('view_user')
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@asyncio.coroutine
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def user_handler(request):
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name = request.match_info.get('name', "Anonymous")
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text = "Hello, " + name
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return web.Response(body=text.encode('utf-8'))
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# option 3: super low
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# wsgi doesn't do anything
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@asyncio.coroutine
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def user_update_handler(request):
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# identity, asked_permission
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user_id = yield from identity_policy.identify(request)
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identity = yield from auth_policy.authorized_user_id(user_id)
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allowed = yield from request.auth_policy.permits(
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identity, asked_permission
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)
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if not allowed:
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# how is this pluggable as well?
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# ? return NotAllowedStream()
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raise NotAllowedResponse()
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update_user()
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@asyncio.coroutine
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def init(loop):
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# set up identity and auth
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auth_policy = DictionaryAuthorizationPolicy({'me': ('view_user',),
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'you': ('view_user',
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'edit_user',)})
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identity_policy = CookieIdentityPolicy()
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auth = authorization_middleware(auth_policy, identity_policy)
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# wsgi app
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app = web.Application(loop=loop, middlewares=*auth)
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# add the routes
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app.router.add_route('GET', '/', root_handler)
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app.router.add_route('GET', '/{user}', user_handler)
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app.router.add_route('GET', '/{user}/edit', user_update_handler)
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# get it started
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srv = yield from loop.create_server(app.make_handler(),
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'127.0.0.1', 8080)
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print("Server started at http://127.0.0.1:8080")
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return srv
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loop = asyncio.get_event_loop()
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loop.run_until_complete(init(loop))
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try:
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loop.run_forever()
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except KeyboardInterrupt:
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pass # TODO put handler cleanup here
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