4 ms·

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". Pytho

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-host-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 https://discord.gg/cx3usBCWnc

nilslice 4y 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_extism.py#L111-L112 https://github.com/extism/extism/blob/main/python/tests/test... cpu is really controlled by # milliseconds until the wasm code is trapped.
- simonw 4y ago
  That looks like exactly the level of control I've been hoping for in terms of sandboxing. This is really promising!
simonw 4y 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 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 https://github.com/extism/extism-sqlite3 which is very relevant to my interests too!
- bhelx 4y 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 https://github.com/extism/js-pdk [2] https://discord.gg/mAADpt9r https://discord.gg/mAADpt9r

nilslice 4y 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_extism.py#L111-L112 https://github.com/extism/extism/blob/main/python/tests/test... cpu is really controlled by # milliseconds until the wasm code is trapped.

simonw 4y ago
That looks like exactly the level of control I've been hoping for in terms of sandboxing. This is really promising!

simonw 4y 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 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 https://github.com/extism/extism-sqlite3 which is very relevant to my interests too!

bhelx 4y 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 https://github.com/extism/js-pdk [2] https://discord.gg/mAADpt9r https://discord.gg/mAADpt9r