17 releases (9 breaking)

0.22.1 Jan 31, 2024
0.21.0 Apr 22, 2022
0.20.1 Mar 27, 2022
0.17.1 Dec 29, 2021

#580 in Network programming

36 downloads per month

Apache-2.0

115KB
2.5K SLoC

bromine

Asynchronous event driven interprocess communication supporting tcp and unix domain sockets.


Usage

Client:

use bromine::prelude::*;
use tokio::net::TcpListener;

/// Callback ping function
async fn handle_ping(ctx: &Context, event: Event) -> Result<()> {
    println!("Received ping event.");
    ctx.emit("pong", ()).await?;
    Ok(Response::empty())
}

#[tokio::main]
async fn main() {
    // create the client
    let ctx = IPCBuilder::<TcpListener>::new()
        .address("127.0.0.1:2020")
        // register callback
        .on("ping", callback!(handle_ping))
        .build_client().await.unwrap();

    // emit an event and wait for responses
    let response = ctx.emit("ping", ()).await_reply().await?;
    
    // emit an event and get all responses as stream
    let stream = ctx.emit("ping", ()).stream_replies().await?;
    
    while let Some(Ok(event)) = stream.next().await {
        println!("{}", event.name());
    }
}

Server:

use bromine::prelude::*;
use tokio::net::TcpListener;
// create the server

#[tokio::main]
async fn main() {
    IPCBuilder::<TcpListener>::new()
        .address("127.0.0.1:2020")
        // register callback
        .on("ping", callback!(ctx, event, async move {
            println!("Received ping event.");
            for _ in 0..10 {
                ctx.emit("pong", ()).await?;
            }
            Ok(Response::empty())
        }))
        .build_server().await.unwrap();
}

Namespaces

Client:

use bromine::prelude::*;
use tokio::net::TcpListener;
// create the client

#[tokio::main]
async fn main() {
    let ctx = IPCBuilder::<TcpListener>::new()
        .address("127.0.0.1:2020")
        // register namespace
        .namespace("mainspace-client")
        // register callback (without macro)
        .on("ping", |_ctx, _event| Box::pin(async move {
            println!("Received ping event.");
            Ok(())
        }))
        .build()
        .build_client().await.unwrap();

// emit an initial event
    let response = ctx.emit_to("mainspace-server", "ping", ())
        .await_response().await?;
}

Server:

use bromine::prelude::*;
use tokio::net::TcpListener;
// create the server

pub struct MyNamespace;

impl MyNamespace {
     async fn ping(_ctx: &Context, _event: Event) -> Result<()> {
         println!("My namespace received a ping");
         Ok(())
     }
}

impl NamespaceProvider for MyNamespace {
     fn name() -> &'static str {"my_namespace"}
 
     fn register(handler: &mut EventHandler) {
         events!(handler, 
            "ping" => Self::ping
         );
     }
}

#[tokio::main]
async fn main() {
    IPCBuilder::<TcpListener>::new()
        .address("127.0.0.1:2020")
        // register namespace
        .namespace("mainspace-server")
        // register callback
        .on("ping", |_ctx, _event| Box::pin(async move {
            println!("Received ping event.");
            Ok(())
        }))
        .build()
        .add_namespace(namespace!(MyNamespace))
        .build_server().await.unwrap();
}

License

Apache-2.0

Dependencies

~4–17MB
~179K SLoC