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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.