is it possible to call lua functions defined in other lua scripts in redis?

Question

I have tried to declare a function without the local keyword and then call that function from anther script but it gives me an error when I run the command.

Answer 1

Because I'm not one to leave well enough alone, I built a package that allows for simple internal calling semantics. The package (for Python) is available on GitHub.

Long story short, it uses ARGV as a call stack, translates KEYS/ARGV references to _KEYS and _ARGV, uses Redis as a name -> hash mapping internally, and translates CALL.(, ) to a table append + Redis lookup + Lua function call.

The METHOD.txt file describes what goes on, and all of the regular expressions I used to translate the Lua scripts are available in lua_call.py. Feel free to re-use my semantics.

The use of the function registry makes this very unlikely to work in Redis cluster or any other multi-shard setup, but for single-master applications, it should work for the foreseeable future.