WASM Component Model

[thangchung]

From this presentation, we intend to implement this model on Spin.

Component Model & Introduction to WebAssembly components by Radu Matei
Component Model Tooling Compatibility - Mar 2023

• Rust -> https://github.com/bytecodealliance/cargo-component
• Js -> https://github.com/bytecodealliance/componentize-js
• Python -> https://github.com/bytecodealliance/componentize-py
  State of WebAssembly - WASI

Food for thought:

• https://github.com/deislabs/spiderlightning/blob/main/docs/primer.md
• https://mosn.io/layotto 👇
  
• https://lunatic.solutions/
• https://github.com/suneetnangia/wasm-orchestration-with-spin

[thangchung]

HttpClient with wasi supports:

• sunfishcode/world-of-wasi-demo - client and server wasi-http (Rust)
• dev-wasm/dev-wasm-dotnet - C#
• reqwest - forked from Golem
  • https://www.golem.cloud/learn/rust
• wasm-compose/example - web server sample with middleware using wasm-compose
• acfoltzer/hello-wasi-http - implement wasi-http from scratch

Component model:

• alexcrichton/bacon-exercises - dynamically load components
• eduardomourar/wasm-web-shell - web shell builds with the component model, then use jco to target it on the web platform.
• dicej/wasi-cloud-core-crawler - the crawler used wasm-cloud-core capabilities
• dicej/component-sandbox-demo - sandbox model (Python)
• esoterra/wasmcon2023 - multiple targets in various programming languages
• golemcloud/golem-examples/rust - multiple samples use WIT formats.
• danbugs/wit-bindgen-cs - Hackathon to make C# work with component model
• MediosZ/component-model-demo - sample of parsing markdown to HTML

Spin w/ component model:

• https://github.com/lee-orr/spin-message-trigger/blob/main/spin-message-types/wit/spin-message-trigger.wit
• https://github.com/danbugs/wasi-messaging-demo => implement wasi-messaging demo, it uses host to init and handle message
• Plugins on Spin (experiment only): https://github.com/fermyon/spin/pull/1536/files
  • Without Spin, we can build a plugin model: https://github.com/era/example-of-plugins-with-webassembly
• wasm-compose with spin: https://github.com/fibonacci1729/spin-compose-example, adapts example from https://github.com/bytecodealliance/wasm-tools/blob/main/crates/wasm-compose/example
  • Discussion: Does the spin host support multiple wasm guests (which call each other)? spinframework/spin#1686 & https://github.com/tschneidereit/calculator-demo
  • Simple http-server with hyper => https://github.com/Mossaka/wit-bindgen-go-template/blob/main/src/main.rs & https://github.com/Mossaka/wit-bindgen-pure-go/tree/main
    • Deadly simple implementation => https://github.com/fits/try_samples/tree/a2be44f259b55e6f0263cb61964d9f451d10a83d/blog/20230225/wasm-component-model
  • What we are looking for module plugins with external capabilities on the host => https://github.com/bnjbvr/trinity/blob/main/wit/trinity-module.wit