envoyproxy/envoy

Hybrid programming in Envoy (Make Lua-resty-FFI run on Envoy)

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#28,297 opened on Jul 9, 2023

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design proposalenhancementhelp wanted

Description

lua-resty-ffi provides an efficient and generic API to do hybrid programming in openresty/envoy with mainstream languages.

https://github.com/kingluo/lua-resty-ffi

lua-resty-ffi is now available on envoy, which means you can use Go, Python, Java, Rust and NodeJS to develop new features for envoy, and existing lua-resty-ffi based libraries such as lua- resty-ffi-grpc can be switched over to envoy without any code changes.

http://luajit.io/posts/make-lua-resty-ffi-run-on-envoy/

Welcome any suggestions or discussions! Thanks.

Contributor guide

Tech stack
gopythonjavarustnodejscpp
Domain
backendinfrastructure
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
over 1 week
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Knowledge of Envoy architectureFamiliarity with Lua and FFIExperience with one of Go/Python/Java/Rust/NodeJS
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
Review the lua resty ffi library and the blog post at http://luajit.io/posts/make lua resty ffi run on envoy/ to understand the integration. Analyze the comments on this issue to identify any discussed challenges or design decisions. Explore the Envoy source code for existing Lua support and determine how to extend it to support the FFI interface.