egccri-runtime

An experimental wasm app runtime.

Wasi include in wasm-component(contains interface type), define in wit file, then use linker link to the wasmtime component.

Features

• async
• multi invokers

How to Use

# run server
egccri run 0.0.0.0:9999

# install app use client
egccri-client -s 127.0.0.1:9999 install grpc-service 0.1.0

Other

Publish and run guest from registry.

cargo install --git https://github.com/bytecodealliance/registry

Use cargo component impl guest.

cargo component build

Example

How to add a pub/sub support with rust and wasmtime?

• consider use wasi support io function
• design a pub/sub protocol base tcp
• use a wit file to describe pub/sub interface
• use wit-bindgen generate host/guest code
• impl pub/sub base host generate code with wasmtime
• link pub/sub component to wasmtime
• give a sdk use wit-bindgen(extend 'C')
• write a guest crate to use pub/sub sdk
• support run wasm with cmd or invoker

Flow upcoming wasi-messaging version and impl Host function base tcp.

Q&A

Wasi preview1 different with preview2? Wasi standard changed, how rust compiler also need change? watch lib/sys/wasi. Wasi func store where in wasm binary? import section.