Rust Http Val

.Rust_Http_Val.md

Source for https://www.val.town/v/saolsen/example_rust_http_val For build instructions see https://gist.github.com/saolsen/d273bb1baba5e912e4dc2b187511affa For usage see https://www.val.town/v/saolsen/use_example_rust_http_val

Cargo.toml

[package]
name = "rust_http_val"
version = "0.1.0"
edition = "2018"

[lib]
name="rust_http_val"
path="val.rs"
crate-type = ["cdylib", "rlib"]

[dependencies]
wasm-bindgen = "0.2.84"
serde = { version = "1.0", features = ["derive"] }
serde_json = "1.0.108"

[profile.release]
lto = true
opt-level = "s"

val.rs

use serde_json::json;

use wasm_bindgen::prelude::*;

#[wasm_bindgen]
extern "C" {
    #[wasm_bindgen(js_namespace = console)]
    fn log(s: &str);
}

#[wasm_bindgen]
pub fn handler(method: &str, url: &str, _body: &str) -> Result<String, JsValue> {
    log("Handling request from Rust!");

    let response = json!({
        "message": "Hello from Rust, it works!",
        "request": {
            "url": url,
            "method": method,
        }
    });

    Ok(serde_json::to_string_pretty(&response).unwrap())
}