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“Naeel” db7862b8bd fix: console-python-env не поддерживает def main(event, context) — TypeError при вызове архивных функций

Проблема: ghcr.io/fission/python-env v3 вызывает userfunc() без аргументов.
Пользователи пишут def main(event, context) (AWS Lambda стиль) — получают:
TypeError: main() missing 2 required positional arguments: 'event' and 'context'

Это НЕ ошибка пользователя. Fission просто не реализует Lambda-конвенцию.
demo.py: временно исправлен на event=None, context=None.

План: собрать naeel/console-python-env с патчем inspect.signature
чтобы любая сигнатура main() работала автоматически.
Подробнее: doc/plans/console-python-env-fix-2026-05-04.md

2026-05-04 09:03:51 +04:00

1.5 KiB

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Plan: console-python-env — fix function call signature

Date: 2026-05-04

Problem

Fission Python env v3 calls user function as userfunc() with no arguments (Flask URL path params only, empty for parameterless routes).

Users writing def main(event, context) (AWS Lambda style) get:

TypeError: main() missing 2 required positional arguments: 'event' and 'context'

This is a real limitation of ghcr.io/fission/python-env — it never supported Lambda-style signatures. The user code is valid Python, the env is inflexible.

Solution

Build custom naeel/console-python-env based on ghcr.io/fission/python-env. Patch server.py: before calling userfunc, use inspect.signature to count required positional args, fill them with None if Fission passes fewer.

Supported signatures after fix:

def main() — standard Fission
def main(event, context) — AWS Lambda style (event=None, context=None)
def main(request) — single-arg style (request=None)
def main(*args, **kwargs) — variadic, works as before

Steps

Get server.py from running pod
Apply inspect patch to userfunc_call
Write Dockerfile: FROM ghcr.io/fission/python-env, COPY patched server.py
Build naeel/console-python-env:v1.0
Push to Docker Hub
Update Environment CRD console-python-env in k8s → new runtime image
Restart poolmgr pod for that env
Test aa1 with def main(event, context) from archive

Documentation (after fix)

Add to user docs: supported function signatures for Fission Python env.

1.5 KiB Raw Blame History