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Add a new primitive of a DB-backed channel

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The coordinator already had one of these, albeit implemented much worse than
the one now properly introduced. It had to either be sending or receiving,
whereas the new one can do both at the same time.

This replaces said instance and enables pleasant patterns when implementing the
processor/coordinator.
This commit is contained in:
Luke Parker
2023-11-19 02:05:01 -05:00
parent bd14db9f76
commit 74a8df4c7b
5 changed files with 83 additions and 72 deletions
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51
coordinator/src/main.rs
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@@ -847,33 +847,36 @@ async fn handle_cosigns_and_batch_publication<D: Db, P: P2p>(
}
// Handle pending cosigns
while let Some((session, block, hash)) = CosignTransactions::peek_cosign(&db, network) {
let Some(ActiveTributary { spec, tributary }) = tributaries.get(&session) else {
log::warn!("didn't yet have tributary we're supposed to cosign with");
break;
};
log::info!(
"{network:?} {session:?} cosigning block #{block} (hash {}...)",
hex::encode(&hash[.. 8])
);
let tx = Transaction::CosignSubstrateBlock(hash);
let res = tributary.provide_transaction(tx.clone()).await;
if !(res.is_ok() || (res == Err(ProvidedError::AlreadyProvided))) {
if res == Err(ProvidedError::LocalMismatchesOnChain) {
// Spin, since this is a crit for this Tributary
loop {
log::error!(
"{}. tributary: {}, provided: {:?}",
"tributary added distinct CosignSubstrateBlock",
hex::encode(spec.genesis()),
&tx,
);
sleep(Duration::from_secs(60)).await;
{
let mut txn = db.txn();
while let Some((session, block, hash)) = CosignTransactions::try_recv(&mut txn, network) {
let Some(ActiveTributary { spec, tributary }) = tributaries.get(&session) else {
log::warn!("didn't yet have tributary we're supposed to cosign with");
break;
};
log::info!(
"{network:?} {session:?} cosigning block #{block} (hash {}...)",
hex::encode(&hash[.. 8])
);
let tx = Transaction::CosignSubstrateBlock(hash);
let res = tributary.provide_transaction(tx.clone()).await;
if !(res.is_ok() || (res == Err(ProvidedError::AlreadyProvided))) {
if res == Err(ProvidedError::LocalMismatchesOnChain) {
// Spin, since this is a crit for this Tributary
loop {
log::error!(
"{}. tributary: {}, provided: {:?}",
"tributary added distinct CosignSubstrateBlock",
hex::encode(spec.genesis()),
&tx,
);
sleep(Duration::from_secs(60)).await;
}
}
panic!("provided an invalid CosignSubstrateBlock: {res:?}");
}
panic!("provided an invalid CosignSubstrateBlock: {res:?}");
}
CosignTransactions::take_cosign(db.txn(), network);
txn.commit();
}
// Verify any publifshed `Batch`s