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by nilslice 1237 days ago
Have you seen Extism? We call it a "plugin system", but it's far more generic than that.. just hard to market a "general purpose universal code runtime".

Python SDK: https://extism.org/docs/integrate-into-your-codebase/python-...

Python is 1 of 15+ languages we support, and as far as I know it's the easiest way to setup a wasm engine in your app, load wasm code, and call a function using complex data I/O.

I'm one of the authors - happy to share more about it, or if you'd like to join our Discord we have lots of active users and contributors there: https://discord.gg/cx3usBCWnc
2 comments
simonw 1237 days ago
I hadn't looked at that one. It looks very promising! Definitely has better documentation than the other options I've looked at.

I see that the library itself is available in Python, but this page https://extism.org/docs/category/write-a-plug-in currently only lists Rust, JavaScript, Go, Haskell, AssemblyScript, Zig and C. Any chance Python might get added to that list as well?

Just found https://github.com/extism/extism-sqlite3 which is very relevant to my interests too!

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bhelx 1236 days ago
Extism does not yet support writing the plugins (our term for Wasm guests) in python. I have been working on javascript support[1] and I think I could use a similar strategy to support python. If you are at all interested in following along or helping out you should join our discord.[2] I just started a #python-pdk channel there.

[1] https://github.com/extism/js-pdk [2] https://discord.gg/mAADpt9r

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nilslice 1237 days ago
Oh, and here's an example (test) showing how to construct a "manifest" to control the cpu/memory limits: https://github.com/extism/extism/blob/main/python/tests/test...

cpu is really controlled by # milliseconds until the wasm code is trapped.

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simonw 1237 days ago
That looks like exactly the level of control I've been hoping for in terms of sandboxing. This is really promising!
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