use amq_protocol::tcp::AMQPUriTcpExt;
use futures_executor::LocalPool;
use lapin::{
message::DeliveryResult, options::*, publisher_confirm::Confirmation, types::FieldTable,
BasicProperties, Connection, ConnectionProperties, ConsumerDelegate, Result,
};
use log::info;
use tcp_stream::{HandshakeError, NativeTlsConnector};
#[derive(Clone, Debug, PartialEq)]
struct Subscriber;
impl ConsumerDelegate for Subscriber {
fn on_new_delivery(&self, delivery: DeliveryResult) {
info!("received message: {:?}", delivery);
}
}
async fn connect() -> Result<Connection> {
std::env::var("AMQP_ADDR")
.unwrap_or_else(|_| "amqp://127.0.0.1:5672/%2f".into())
.connect(|stream, uri, poll| {
let tls_builder = NativeTlsConnector::builder();
let mut res = stream.into_native_tls(
tls_builder.build().expect("TLS configuration failed"),
&uri.authority.host,
);
while let Err(error) = res {
match error {
HandshakeError::Failure(io_err) => {
panic!("TLS connection failed: {:?}", io_err)
}
HandshakeError::WouldBlock(mid) => res = mid.handshake(),
}
}
let stream = res.unwrap();
Connection::connector(ConnectionProperties::default())(stream, uri, poll)
})??
.await
}
fn main() {
std::env::set_var("RUST_LOG", "lapin=trace");
env_logger::init();
let mut executor = LocalPool::new();
executor.run_until(async {
let conn = connect().await.expect("connection error");
info!("CONNECTED");
let channel_a = conn.create_channel().await.expect("create_channel");
let channel_b = conn.create_channel().await.expect("create_channel");
info!("[{}] state: {:?}", line!(), conn.status().state());
let queue = channel_a
.queue_declare(
"hello",
QueueDeclareOptions::default(),
FieldTable::default(),
)
.await
.expect("queue_declare");
info!("[{}] state: {:?}", line!(), conn.status().state());
info!("[{}] declared queue: {:?}", line!(), queue);
info!("will consume");
channel_b
.basic_consume(
"hello",
"my_consumer",
BasicConsumeOptions::default(),
FieldTable::default(),
)
.await
.expect("basic_consume")
.set_delegate(Box::new(Subscriber));
info!("[{}] state: {:?}", line!(), conn.status().state());
info!("will publish");
let payload = b"Hello world!";
let confirm = channel_a
.basic_publish(
"",
"hello",
BasicPublishOptions::default(),
payload.to_vec(),
BasicProperties::default(),
)
.await
.expect("basic_publish")
.await;
assert_eq!(confirm, Confirmation::NotRequested);
info!("[{}] state: {:?}", line!(), conn.status().state());
})
}