use crate::{
error_holder::ErrorHolder,
internal_rpc::InternalRPCHandle,
options::{BasicAckOptions, BasicNackOptions, BasicRejectOptions},
protocol::{AMQPError, AMQPSoftError},
types::{ChannelId, DeliveryTag},
Error, Promise, PromiseResolver, Result,
};
use std::sync::{
atomic::{AtomicBool, Ordering},
Arc,
};
#[derive(Default, Debug)]
pub struct Acker {
channel_id: ChannelId,
delivery_tag: DeliveryTag,
internal_rpc: Option<InternalRPCHandle>,
error: Option<ErrorHolder>,
used: Arc<AtomicBool>,
}
impl Acker {
pub(crate) fn new(
channel_id: ChannelId,
delivery_tag: DeliveryTag,
internal_rpc: Option<InternalRPCHandle>,
error: Option<ErrorHolder>,
) -> Self {
Self {
channel_id,
delivery_tag,
internal_rpc,
error,
used: Arc::default(),
}
}
pub async fn ack(&self, options: BasicAckOptions) -> Result<()> {
self.rpc(|internal_rpc, resolver| {
internal_rpc.basic_ack(
self.channel_id,
self.delivery_tag,
options,
resolver,
self.error.clone(),
)
})
.await
}
pub async fn nack(&self, options: BasicNackOptions) -> Result<()> {
self.rpc(|internal_rpc, resolver| {
internal_rpc.basic_nack(
self.channel_id,
self.delivery_tag,
options,
resolver,
self.error.clone(),
)
})
.await
}
pub async fn reject(&self, options: BasicRejectOptions) -> Result<()> {
self.rpc(|internal_rpc, resolver| {
internal_rpc.basic_reject(
self.channel_id,
self.delivery_tag,
options,
resolver,
self.error.clone(),
)
})
.await
}
async fn rpc<F: Fn(&InternalRPCHandle, PromiseResolver<()>)>(&self, f: F) -> Result<()> {
if self.used.swap(true, Ordering::SeqCst) {
return Err(Error::ProtocolError(AMQPError::new(
AMQPSoftError::PRECONDITIONFAILED.into(),
"Attempted to use an already used Acker".into(),
)));
}
if let Some(error) = self.error.as_ref() {
error.check()?;
}
if let Some(internal_rpc) = self.internal_rpc.as_ref() {
let (promise, resolver) = Promise::new();
f(internal_rpc, resolver);
promise.await
} else {
Ok(())
}
}
}
impl PartialEq for Acker {
fn eq(&self, other: &Acker) -> bool {
self.channel_id == other.channel_id && self.delivery_tag == other.delivery_tag
}
}