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|
use futures_util::StreamExt;
use async_nats::jetstream::consumer;
use tracing::{trace, debug, error, info};
use uuid::Uuid;
use warden_core::configuration::ReloadEvent;
use crate::state::AppHandle;
pub async fn reload(state: AppHandle) -> anyhow::Result<()> {
let id = Uuid::now_v7().to_string();
info!(durable = id, "listening for configuration changes");
let durable = &id;
let consumer = state
.services
.jetstream
.get_stream(state.config.nats.config.stream.to_string())
.await?
.get_or_create_consumer(
durable,
consumer::pull::Config {
durable_name: Some(durable.to_string()),
filter_subject: state.config.nats.config.reload_subject.to_string(),
deliver_policy: consumer::DeliverPolicy::LastPerSubject,
..Default::default()
},
)
.await?;
let mut messages = consumer.messages().await?;
while let Some(value) = messages.next().await {
match value {
Ok(message) => {
trace!("got reload cache event",);
if let Ok(Some(event)) = String::from_utf8(message.payload.to_vec())
.map(|value| ReloadEvent::from_str_name(&value))
{
match event {
ReloadEvent::Routing => {
let local_cache = state.local_cache.write().await;
local_cache.invalidate_all();
let _ = message.ack().await.inspect_err(|e| error!("{e}"));
}
_ => {
debug!(event = ?event, "detected reload event, acknowledging");
let _ = message.ack().await.inspect_err(|e| error!("{e}"));
}
}
}
}
Err(e) => {
error!("{e}")
}
}
}
Ok(())
}
|
