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use config::{SharedCommittee, SharedWorkerCache, WorkerCache, WorkerIndex};
use network::P2pNetwork;
use primary::PrimaryWorkerMessage;
use std::{collections::BTreeMap, sync::Arc};
use store::Store;
use tap::TapOptional;
use tokio::{sync::watch, task::JoinHandle};
use tracing::{error, warn};
use types::{
metered_channel::{Receiver, Sender},
Batch, BatchDigest, ReconfigureNotification, WorkerPrimaryError, WorkerPrimaryMessage,
};
#[cfg(test)]
#[path = "tests/synchronizer_tests.rs"]
pub mod synchronizer_tests;
pub struct Synchronizer {
committee: SharedCommittee,
worker_cache: SharedWorkerCache,
store: Store<BatchDigest, Batch>,
rx_message: Receiver<PrimaryWorkerMessage>,
network: P2pNetwork,
tx_reconfigure: watch::Sender<ReconfigureNotification>,
tx_primary: Sender<WorkerPrimaryMessage>,
}
impl Synchronizer {
#[must_use]
pub fn spawn(
committee: SharedCommittee,
worker_cache: SharedWorkerCache,
store: Store<BatchDigest, Batch>,
rx_message: Receiver<PrimaryWorkerMessage>,
tx_reconfigure: watch::Sender<ReconfigureNotification>,
tx_primary: Sender<WorkerPrimaryMessage>,
network: P2pNetwork,
) -> JoinHandle<()> {
tokio::spawn(async move {
Self {
committee,
worker_cache,
store,
rx_message,
network,
tx_reconfigure,
tx_primary,
}
.run()
.await;
})
}
async fn run(&mut self) {
loop {
tokio::select! {
Some(message) = self.rx_message.recv() => match message {
PrimaryWorkerMessage::Cleanup(_) => {
},
PrimaryWorkerMessage::Reconfigure(message) => {
let shutdown = match &message {
ReconfigureNotification::NewEpoch(new_committee) => {
self.network.cleanup(self.worker_cache.load().network_diff(new_committee.keys()));
self.committee.swap(Arc::new(new_committee.clone()));
self.worker_cache.swap(Arc::new(WorkerCache {
epoch: new_committee.epoch,
workers: new_committee.keys().iter().map(|key|
(
(*key).clone(),
self.worker_cache
.load()
.workers
.get(key)
.tap_none(||
warn!("Worker cache does not have a key for the new committee member"))
.unwrap_or(&WorkerIndex(BTreeMap::new()))
.clone()
)).collect(),
}));
false
}
ReconfigureNotification::UpdateCommittee(new_committee) => {
self.network.cleanup(self.worker_cache.load().network_diff(new_committee.keys()));
self.committee.swap(Arc::new(new_committee.clone()));
self.worker_cache.swap(Arc::new(WorkerCache {
epoch: new_committee.epoch,
workers: new_committee.keys().iter().map(|key|
(
(*key).clone(),
self.worker_cache
.load()
.workers
.get(key)
.tap_none(||
warn!("Worker cache does not have a key for the new committee member"))
.unwrap_or(&WorkerIndex(BTreeMap::new()))
.clone()
)).collect(),
}));
tracing::debug!("Committee updated to {}", self.committee);
false
}
ReconfigureNotification::Shutdown => true
};
self.tx_reconfigure.send(message).expect("All tasks dropped");
if shutdown {
self.tx_reconfigure.closed().await;
return;
}
}
PrimaryWorkerMessage::RequestBatch(digest) => {
self.handle_request_batch(digest).await;
},
PrimaryWorkerMessage::DeleteBatches(digests) => {
self.handle_delete_batches(digests).await;
}
},
}
}
}
async fn handle_request_batch(&mut self, digest: BatchDigest) {
let message = match self.store.read(digest).await {
Ok(Some(batch)) => WorkerPrimaryMessage::RequestedBatch(digest, batch),
_ => WorkerPrimaryMessage::Error(WorkerPrimaryError::RequestedBatchNotFound(digest)),
};
self.tx_primary
.send(message)
.await
.expect("Failed to send message to primary channel");
}
async fn handle_delete_batches(&mut self, digests: Vec<BatchDigest>) {
let message = match self.store.remove_all(digests.clone()).await {
Ok(_) => WorkerPrimaryMessage::DeletedBatches(digests),
Err(err) => {
error!("{err}");
WorkerPrimaryMessage::Error(WorkerPrimaryError::ErrorWhileDeletingBatches(
digests.clone(),
))
}
};
self.tx_primary
.send(message)
.await
.expect("Failed to send message to primary channel");
}
}