moleculer 0.4.1

Progressive microservices framework for Rust, based on and compatible with moleculerjs/moleculer
Documentation 
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use std::{error::Error, time::Duration};

use moleculer::{
    config::{ConfigBuilder, Transporter},
    service::{Context, Event, EventBuilder, Service},
    ServiceBroker,
};

#[tokio::main]
async fn main() -> eyre::Result<()> {
    env_logger::init();
    color_eyre::install()?;

    let config = ConfigBuilder::default()
        .transporter(Transporter::nats("nats://localhost:4222"))
        .build();

    let print_async = EventBuilder::new("printAsync")
        .add_callback(print_async)
        .build();

    let print_normal = EventBuilder::new("printNormal")
        .add_callback(print_normal)
        .build();

    let greeter_service = Service::new("asyncGreeter")
        .add_event(print_normal)
        .add_event(print_async);

    let service_broker = ServiceBroker::new(config).add_service(greeter_service);
    service_broker.start().await;

    Ok(())
}

fn print_async(_ctx: Context<Event>) -> Result<(), Box<dyn Error>> {
    println!("Starting");
    tokio::spawn(async { hello_from_async().await });
    println!("Ended");
    Ok(())
}

fn print_normal(_ctx: Context<Event>) -> Result<(), Box<dyn Error>> {
    println!("Hello from normal");
    Ok(())
}

async fn hello_from_async() {
    tokio::time::sleep(Duration::from_secs(5)).await;
    println!("Hello from async")
}