messagebus/examples/demo_batch.rs

74 lines
1.8 KiB
Rust

use std::sync::Arc;
use async_trait::async_trait;
use messagebus::{receivers, AsyncBatchHandler, BatchHandler, Message, error, Bus};
use thiserror::Error;
#[derive(Debug, Error, Clone)]
enum Error {
#[error("Error({0})")]
Error(Arc<anyhow::Error>)
}
impl<M: Message> From<error::Error<M>> for Error {
fn from(err: error::Error<M>) -> Self {
Self::Error(Arc::new(err.into()))
}
}
struct TmpReceiver;
#[async_trait]
impl AsyncBatchHandler<i32> for TmpReceiver {
type Error = Error;
type Response = ();
async fn handle(&self, msg: Vec<i32>, _bus: &Bus) -> Result<Vec<Self::Response>, Self::Error> {
println!("---> [i32; {}] {:?}", msg.len(), msg);
Ok(vec![])
}
}
impl BatchHandler<i16> for TmpReceiver {
type Error = Error;
type Response = ();
fn handle(&self, msg: Vec<i16>, _bus: &Bus) -> Result<Vec<Self::Response>, Self::Error> {
println!("---> [i16; {}] {:?}", msg.len(), msg);
Ok(vec![])
}
}
#[tokio::main]
async fn main() {
let (b, poller) = Bus::build()
.register(TmpReceiver)
.subscribe::<i32, receivers::BufferUnorderedBatchedAsync<_, _, _>, _, _>(16, Default::default())
.subscribe::<i16, receivers::BufferUnorderedBatchedSync<_, _, _>, _, _>(16, Default::default())
.done()
.build();
for i in 1..100i32 {
b.send(i).await.unwrap();
}
b.send(1i16).await.unwrap();
b.send(2i16).await.unwrap();
b.send(3i16).await.unwrap();
b.send(4i16).await.unwrap();
b.send(5i16).await.unwrap();
b.send(6i16).await.unwrap();
b.send(7i16).await.unwrap();
println!("flush");
b.flush().await;
println!("close");
b.close().await;
println!("closed");
poller.await;
println!("[done]");
}