WASI Mindmap

A collection of examples and tutorials about WASIp2.

Complementary guide - A Complete Guide to WASIp2 for Rust and Python Programmers

Table of examples

Host/Guest	Rust Adder ↪	Python Adder ↪	Rust KVDatabase ↪
Rust Host ↪	✅↪	✅↪	✅↪
Python Host ↪	✅	🛠️	🛠️
Command Component (from Rust)	✅↪	📌	📌

✅: Currently supported

🛠️: Not supported for now, under development of wasmtime-py, see the issue.

📌: TODO and welcome contributions

The Rust command component uses wit-bindgen and cargo build --target wasm32-wasip2, then composes with the Rust adder using wac.

Related Issues:

• Resolved ones by me, just FYI:
  • Missing examples for using bindgen! async, imports and resource in host
  • Bindgen improvement: Remove the use of async_trait
  • Documentation: Wrong doc about Config::wasm_component_model
  • Renovate host example with latest wasmtime and wasmtime_wasi
  • Renovate the WASI example
• Unresolved ones, for those who may be interested in contributing:
  • Compiled wasm32-wasip2 component from simple code requires excessive WASI interfaces
  • Bindgen! gives weird name to an interface well-named in WIT file