Implement StreamFunction in Rust

$ curl -fsSL "https://get.yomo.run" | sh

#[yomo::init]
fn init() -> anyhow::Result<Vec<u32>> {
    // return observe datatags
    Ok(vec![0x33])
}
 
#[yomo::handler]
fn handler(input: &[u8]) -> anyhow::Result<(u32, Vec<u8>)> {
    println!("wasm rust sfn received {} bytes", input.len());
 
    // parse input from bytes
    let input = String::from_utf8(input.to_vec())?;
 
    // your app logic goes here
    let output = input.to_uppercase();
 
    // return the datatag and output bytes
    Ok((0x34, output.into_bytes()))
}

[package]
name = "yomo-sfn"
version = "0.1.0"
edition = "2021"
 
[lib]
crate-type = ["cdylib"]
 
[dependencies]
anyhow = "1.0"
yomo = { version = "0.1" }

$ rustup target add wasm32-wasi
$ cargo build --release --target wasm32-wasi

yomo run /path/to/sfn.wasm