A flexible CTF contest platform for coming PKU GeekGame events

PKU GeekGame

Last update: Dec 15, 2022

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Machine Learning gs-backend

Overview

Project Guiding Star: the Backend

A flexible CTF contest platform for coming PKU GeekGame events

Still in early development

Highlights

Not configurable is most customizable. Every contest has its unique rule, which is unlikely to be fully covered by a text file or SQL table. Our experience shows that these static configurations often disturb contest organizers when they want more customization. Instead, we trust them as decent programmers, leaving the customization to the logic in the source code that is easy to maintain and extend.
Pure Python Logic. The core logic that handles submissions, scoreboards, and users are written in plain old Python. Only basic Object-Oriented Programming skill is required before you can start customization. No preknowledge of heavy third-party frameworks is needed.
Type-checked. Every function in the codebase is type-annotated and checked by Mypy in strict mode. With type information, you can reliably auto-complete the code and check what breaks after a refactor in a capable IDE.
A flexible state machine. The logic splits into one reducer that updates the game state and multiple workers that power read-only APIs and pass actions to the reducer. The state synchronizes in real-time with ZeroMQ sockets. It is easy to attach different kinds of workers that handle push notifications or background jobs to the reducer.
Scalable performance. A bonus of the state machine architecture is that only raw submissions are in the database (so that the state can be restored after a service restart). The game state is kept in RAM, making it more performant when updating the scoreboard. The backend is also asynchronous, therefore a laggy OAuth provider will not block other requests.

Architecture

TODO

License

To be considered after the codebase is nearly complete. It may be GPL or something like that.

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Comments

worker run failed

help wanted

[2022-11-08 23:32:09 -0800] [17398] [ERROR] Exception occurred while handling uri: 'http://guiding_star_backend/service/wish/game_info?tabid=TGeN'
Traceback (most recent call last):
  File "/root/.pyenv/versions/3.8.12/lib/python3.8/site-packages/sanic_ext/extensions/injection/constructor.py", line 55, in __call__
    retval = self.func(**args)
TypeError: <lambda>() missing 1 required positional argument: 'req'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "handle_exception", line 65, in handle_exception
    from sanic.http import Stage
  File "/www/wwwroot/guiding-star/src/api/app.py", line 49, in handle_error
    raise exc
  File "handle_request", line 41, in handle_request
    TypeVar,
  File "/root/.pyenv/versions/3.8.12/lib/python3.8/site-packages/sanic/signals.py", line 197, in dispatch
    return await dispatch
  File "/root/.pyenv/versions/3.8.12/lib/python3.8/site-packages/sanic/signals.py", line 167, in _dispatch
    retval = await maybe_coroutine
  File "/root/.pyenv/versions/3.8.12/lib/python3.8/site-packages/sanic_ext/extensions/injection/injector.py", line 49, in inject_kwargs
    injected_args = await gather_args(
  File "/root/.pyenv/versions/3.8.12/lib/python3.8/site-packages/sanic_ext/extensions/injection/constructor.py", line 158, in gather_args
    return {
  File "/root/.pyenv/versions/3.8.12/lib/python3.8/site-packages/sanic_ext/extensions/injection/constructor.py", line 159, in <dictcomp>
    name: await do_cast(_type, constructor, request, **kwargs)
  File "/root/.pyenv/versions/3.8.12/lib/python3.8/site-packages/sanic_ext/extensions/injection/constructor.py", line 170, in do_cast
    retval = await retval
  File "/root/.pyenv/versions/3.8.12/lib/python3.8/site-packages/sanic_ext/extensions/injection/constructor.py", line 61, in __call__
    raise ServerError(
sanic.exceptions.ServerError: Failure to inject dependencies. Make sure that all dependencies for '<lambda>' have been registered.

when requesting backend worker service, it return an 500 error and the exception is above. how can i resolve it?

opened by ZianTT 4

A flexible CTF contest platform for coming PKU GeekGame events

Related tags

Overview

Project Guiding Star: the Backend

Highlights

Architecture

License

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Comments

worker run failed

Owner

PKU GeekGame

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