Rocket/examples/uuid/src/main.rs

#![feature(plugin)]
#![plugin(rocket_codegen)]

#[macro_use]
extern crate lazy_static;
extern crate uuid;
extern crate rocket;
extern crate rocket_contrib;

use std::collections::HashMap;
use uuid::Uuid;
use rocket_contrib::UUID;

#[cfg(test)]
mod tests;

lazy_static! {
    // A small people lookup table for the sake of this example. In a real
    // application this could be a database lookup. Notice that we use the
    // uuid::Uuid type here and not the rocket_contrib::UUID type.
    static ref PEOPLE: HashMap<Uuid, &'static str> = {
        let mut m = HashMap::new();
        let lacy_id = Uuid::parse_str("7f205202-7ba1-4c39-b2fc-3e630722bf9f").unwrap();
        let bob_id = Uuid::parse_str("4da34121-bc7d-4fc1-aee6-bf8de0795333").unwrap();
        let george_id = Uuid::parse_str("ad962969-4e3d-4de7-ac4a-2d86d6d10839").unwrap();
        m.insert(lacy_id, "Lacy");
        m.insert(bob_id, "Bob");
        m.insert(george_id, "George");
        m
    };
}

#[get("/people/<id>")]
fn people(id: UUID) -> Result<String, String> {
    // Because UUID implements the Deref trait, we use Deref coercion to convert
    // rocket_contrib::UUID to uuid::Uuid.
    Ok(PEOPLE.get(&id)
        .map(|person| format!("We found: {}", person))
        .ok_or(format!("Person not found for UUID: {}", id))?)
}

fn rocket() -> rocket::Rocket {
    rocket::ignite()
        .mount("/", routes![people])
}

fn main() {
    rocket().launch();
}