async-lapin 0.1.4

use async_lapin::*;
use lapin::{
    message::DeliveryResult, options::*, publisher_confirm::Confirmation, types::FieldTable,
    BasicProperties, Connection, ConnectionProperties, Result,
};
use log::info;

fn main() -> Result<()> {
    if std::env::var("RUST_LOG").is_err() {
        std::env::set_var("RUST_LOG", "info");
    }

    env_logger::init();

    let addr = std::env::var("AMQP_ADDR").unwrap_or_else(|_| "amqp://127.0.0.1:5672/%2f".into());

    smol::run(async {
        let conn = Connection::connect(
            &addr,
            ConnectionProperties::default().with_async_io(|fut| smol::Task::spawn(fut).detach()),
        )
        .await?;

        info!("CONNECTED");

        let channel_a = conn.create_channel().await?;
        let channel_b = conn.create_channel().await?;

        let queue = channel_a
            .queue_declare(
                "hello",
                QueueDeclareOptions::default(),
                FieldTable::default(),
            )
            .await?;

        info!("Declared queue {:?}", queue);

        let consumer = channel_b
            .basic_consume(
                "hello",
                "my_consumer",
                BasicConsumeOptions::default(),
                FieldTable::default(),
            )
            .await?;

        consumer
            .set_delegate(move |delivery: DeliveryResult| async move {
                let delivery = delivery.expect("error caught in in consumer");
                if let Some((channel, delivery)) = delivery {
                    channel
                        .basic_ack(delivery.delivery_tag, BasicAckOptions::default())
                        .await
                        .expect("failed to ack");
                }
            })
            .expect("set_delegate");

        let payload = b"Hello world!";

        loop {
            let confirm = channel_a
                .basic_publish(
                    "",
                    "hello",
                    BasicPublishOptions::default(),
                    payload.to_vec(),
                    BasicProperties::default(),
                )
                .await?
                .await?;
            assert_eq!(confirm, Confirmation::NotRequested);
        }
    })
}