messagebus/examples/demo_sync_batch.rs

94 lines
2.1 KiB
Rust

use std::sync::Arc;
use async_trait::async_trait;
use messagebus::{
derive::{Error as MbError, Message},
error, AsyncBatchSynchronizedHandler, BatchSynchronizedHandler, Bus, Message,
};
use thiserror::Error;
#[derive(Debug, Error, Clone, MbError)]
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()))
}
}
#[derive(Debug, Clone, Message)]
#[message(clone)]
struct MsgI32(i32);
#[derive(Debug, Clone, Message)]
#[message(clone)]
struct MsgI16(i16);
struct TmpReceiver;
#[async_trait]
impl AsyncBatchSynchronizedHandler<MsgI32> for TmpReceiver {
type Error = Error;
type Response = ();
type InBatch = Vec<MsgI32>;
type OutBatch = Vec<()>;
async fn handle(
&mut self,
msg: Vec<MsgI32>,
_bus: &Bus,
) -> Result<Vec<Self::Response>, Self::Error> {
println!("---> [i32; {}] {:?}", msg.len(), msg);
Ok(vec![])
}
}
impl BatchSynchronizedHandler<MsgI16> for TmpReceiver {
type Error = Error;
type Response = ();
type InBatch = Vec<MsgI16>;
type OutBatch = Vec<()>;
fn handle(&mut self, msg: Vec<MsgI16>, _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_unsync(TmpReceiver)
.subscribe_batch_async::<MsgI32>(16, Default::default())
.subscribe_batch_sync::<MsgI16>(16, Default::default())
.done()
.build();
for i in 1..100i32 {
b.send(MsgI32(i)).await.unwrap();
}
b.send(MsgI16(1i16)).await.unwrap();
b.send(MsgI16(2i16)).await.unwrap();
b.send(MsgI16(3i16)).await.unwrap();
b.send(MsgI16(4i16)).await.unwrap();
b.send(MsgI16(5i16)).await.unwrap();
b.send(MsgI16(6i16)).await.unwrap();
b.send(MsgI16(7i16)).await.unwrap();
println!("flush");
b.flush().await;
println!("close");
b.close().await;
println!("closed");
poller.await;
println!("[done]");
}