Allow for retry attempts in the watch loop

This commit is contained in:
Joel 2024-09-03 14:19:59 +08:00
parent e20be63026
commit 7b84b4fcd0
2 changed files with 121 additions and 24 deletions

View File

@ -17,9 +17,12 @@ use std::sync::Arc;
use std::time::Duration;
use storage::log_store::{tx_store::BlockHashAndSubmissionIndex, Store};
use task_executor::TaskExecutor;
use tokio::sync::{
use tokio::{
sync::{
mpsc::{UnboundedReceiver, UnboundedSender},
RwLock,
},
time::Instant,
};
pub struct LogEntryFetcher {
@ -285,12 +288,14 @@ impl LogEntryFetcher {
executor: &TaskExecutor,
block_hash_cache: Arc<RwLock<BTreeMap<u64, Option<BlockHashAndSubmissionIndex>>>>,
watch_loop_wait_time_ms: u64,
mut watch_progress_rx: UnboundedReceiver<u64>,
) -> UnboundedReceiver<LogFetchProgress> {
let (watch_tx, watch_rx) = tokio::sync::mpsc::unbounded_channel();
let contract = ZgsFlow::new(self.contract_address, self.provider.clone());
let provider = self.provider.clone();
let confirmation_delay = self.confirmation_delay;
let log_page_size = self.log_page_size;
let mut progress_reset_history = BTreeMap::new();
executor.spawn(
async move {
debug!("start_watch starts, start={}", start_block_number);
@ -298,6 +303,13 @@ impl LogEntryFetcher {
let mut parent_block_hash = parent_block_hash;
loop {
check_watch_process(
&mut watch_progress_rx,
&mut progress,
&mut progress_reset_history,
watch_loop_wait_time_ms,
);
match Self::watch_loop(
provider.as_ref(),
progress,
@ -502,6 +514,9 @@ impl LogEntryFetcher {
} else {
None
};
if !log_events.is_empty() {
info!("synced {} events", log_events.len());
for log in log_events.into_iter() {
if let Err(e) = watch_tx.send(log) {
warn!("send LogFetchProgress::Transaction failed: {:?}", e);
@ -516,6 +531,7 @@ impl LogEntryFetcher {
block_hash_cache.write().await.insert(p.0, None);
}
}
}
progress = new_progress;
}
}
@ -528,6 +544,59 @@ impl LogEntryFetcher {
}
}
fn check_watch_process(
watch_progress_rx: &mut UnboundedReceiver<u64>,
progress: &mut u64,
progress_reset_history: &mut BTreeMap<u64, (Instant, usize)>,
watch_loop_wait_time_ms: u64,
) {
let mut min_received_progress = None;
while let Ok(v) = watch_progress_rx.try_recv() {
min_received_progress = match min_received_progress {
Some(min) if min > v => Some(v),
None => Some(v),
_ => min_received_progress,
};
}
if let Some(v) = min_received_progress {
if *progress <= v {
error!(
"received unexpected progress, current {}, received {}",
*progress, v
);
return;
}
let now = Instant::now();
match progress_reset_history.get_mut(&v) {
Some((last_update, counter)) => {
if *counter >= 3 {
error!("maximum reset attempts have been reached.");
watch_progress_rx.close();
return;
}
if now.duration_since(*last_update)
>= Duration::from_millis(watch_loop_wait_time_ms * 30)
{
info!("reset to progress from {} to {}", *progress, v);
*progress = v;
*last_update = now;
*counter += 1;
}
}
None => {
info!("reset to progress from {} to {}", *progress, v);
*progress = v;
progress_reset_history.insert(v, (now, 1usize));
}
}
}
progress_reset_history.retain(|k, _| k + 1000 >= *progress);
}
async fn revert_one_block(
block_hash: H256,
block_number: u64,

View File

@ -15,7 +15,7 @@ use std::time::{Duration, Instant};
use storage::log_store::{tx_store::BlockHashAndSubmissionIndex, Store};
use task_executor::{ShutdownReason, TaskExecutor};
use tokio::sync::broadcast;
use tokio::sync::mpsc::UnboundedReceiver;
use tokio::sync::mpsc::{UnboundedReceiver, UnboundedSender};
use tokio::sync::{oneshot, RwLock};
const RETRY_WAIT_MS: u64 = 500;
@ -146,7 +146,7 @@ impl LogSyncManager {
&executor_clone,
log_sync_manager.block_hash_cache.clone(),
);
log_sync_manager.handle_data(reorg_rx).await?;
log_sync_manager.handle_data(reorg_rx, &None).await?;
if let Some((block_number, block_hash)) =
log_sync_manager.store.get_sync_progress()?
{
@ -223,15 +223,20 @@ impl LogSyncManager {
warn!("catch_up_end send fails, possibly auto_sync is not enabled");
}
let (watch_progress_tx, watch_progress_rx) =
tokio::sync::mpsc::unbounded_channel();
let watch_rx = log_sync_manager.log_fetcher.start_watch(
start_block_number,
parent_block_hash,
&executor_clone,
log_sync_manager.block_hash_cache.clone(),
log_sync_manager.config.watch_loop_wait_time_ms,
watch_progress_rx,
);
// Syncing `watch_rx` is supposed to block forever.
log_sync_manager.handle_data(watch_rx).await?;
log_sync_manager
.handle_data(watch_rx, &Some(watch_progress_tx))
.await?;
Ok::<(), anyhow::Error>(())
},
)
@ -241,20 +246,20 @@ impl LogSyncManager {
Ok((event_send_cloned, catch_up_end_receiver))
}
async fn put_tx(&mut self, tx: Transaction) -> bool {
async fn put_tx(&mut self, tx: Transaction) -> Option<bool> {
// We call this after process chain reorg, so the sequence number should match.
match tx.seq.cmp(&self.next_tx_seq) {
std::cmp::Ordering::Less => true,
std::cmp::Ordering::Less => Some(true),
std::cmp::Ordering::Equal => {
debug!("log entry sync get entry: {:?}", tx);
self.put_tx_inner(tx).await
Some(self.put_tx_inner(tx).await)
}
std::cmp::Ordering::Greater => {
error!(
"Unexpected transaction seq: next={} get={}",
self.next_tx_seq, tx.seq
);
false
None
}
}
}
@ -296,7 +301,11 @@ impl LogSyncManager {
let _ = self.event_send.send(LogSyncEvent::Reverted { tx_seq });
}
async fn handle_data(&mut self, mut rx: UnboundedReceiver<LogFetchProgress>) -> Result<()> {
async fn handle_data(
&mut self,
mut rx: UnboundedReceiver<LogFetchProgress>,
watch_progress_tx: &Option<UnboundedSender<u64>>,
) -> Result<()> {
while let Some(data) = rx.recv().await {
trace!("handle_data: data={:?}", data);
match data {
@ -337,7 +346,26 @@ impl LogSyncManager {
}
}
LogFetchProgress::Transaction(tx) => {
if !self.put_tx(tx.clone()).await {
let mut stop = false;
match self.put_tx(tx.clone()).await {
Some(false) => stop = true,
Some(true) => {}
_ => {
stop = true;
if let Some(progress_tx) = watch_progress_tx {
if let Some((block_number, _)) = self.store.get_sync_progress()? {
if let Err(e) = progress_tx.send(block_number) {
error!("failed to send watch progress, error={:?}", e);
} else {
continue;
}
}
}
}
}
if stop {
// Unexpected error.
bail!("log sync write error");
}
@ -426,7 +454,7 @@ impl LogSyncManager {
&executor_clone,
Duration::from_millis(self.config.recover_query_delay),
);
self.handle_data(recover_rx).await?;
self.handle_data(recover_rx, &None).await?;
}
self.log_fetcher.start_remove_finalized_block_task(