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Allow scheduler's creation of transactions to be async and error

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I don't love this, but it's the only way to select decoys without using a local
database. While the prior commit added such a databse, the performance of it
presumably wasn't viable, and while TODOs marked the needed improvements, it
was still messy with an immense scope re: any auditing.

The relevant scheduler functions now take `&self` (intentional, as all
mutations should be via the `&mut impl DbTxn` passed). The calls to `&self` are
expected to be completely deterministic (as usual).
This commit is contained in:
Luke Parker
2024-09-14 01:09:35 -04:00
parent 2edc2f3612
commit e1ad897f7e
11 changed files with 723 additions and 854 deletions
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25
processor/bin/src/lib.rs
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@@ -15,7 +15,7 @@ use serai_db::{Get, DbTxn, Db as DbTrait, create_db, db_channel};
use primitives::EncodableG;
use ::key_gen::{KeyGenParams, KeyGen};
use scheduler::SignableTransaction;
use scheduler::{SignableTransaction, TransactionFor};
use scanner::{ScannerFeed, Scanner, KeyFor, Scheduler};
use signers::{TransactionPublisher, Signers};
@@ -161,22 +161,23 @@ async fn first_block_after_time<S: ScannerFeed>(feed: &S, serai_time: u64) -> u6
pub async fn main_loop<
S: ScannerFeed,
K: KeyGenParams<ExternalNetworkCiphersuite: Ciphersuite<G = KeyFor<S>>>,
Sch: Scheduler<
S,
SignableTransaction: SignableTransaction<Ciphersuite = K::ExternalNetworkCiphersuite>,
>,
P: TransactionPublisher<<Sch::SignableTransaction as SignableTransaction>::Transaction>,
Sch: Clone
+ Scheduler<
S,
SignableTransaction: SignableTransaction<Ciphersuite = K::ExternalNetworkCiphersuite>,
>,
>(
mut db: Db,
feed: S,
publisher: P,
scheduler: Sch,
publisher: impl TransactionPublisher<TransactionFor<Sch::SignableTransaction>>,
) {
let mut coordinator = Coordinator::new(db.clone());
let mut key_gen = key_gen::<K>();
let mut scanner = Scanner::new::<Sch>(db.clone(), feed.clone()).await;
let mut scanner = Scanner::new(db.clone(), feed.clone(), scheduler.clone()).await;
let mut signers =
Signers::<Db, S, Sch, P>::new(db.clone(), coordinator.coordinator_send(), publisher);
Signers::<Db, S, Sch, _>::new(db.clone(), coordinator.coordinator_send(), publisher);
loop {
let db_clone = db.clone();
@@ -242,8 +243,10 @@ pub async fn main_loop<
if session == Session(0) {
assert!(scanner.is_none());
let start_block = first_block_after_time(&feed, serai_time).await;
scanner =
Some(Scanner::initialize::<Sch>(db_clone, feed.clone(), start_block, key.0).await);
scanner = Some(
Scanner::initialize(db_clone, feed.clone(), scheduler.clone(), start_block, key.0)
.await,
);
}
}
messages::substrate::CoordinatorMessage::SlashesReported { session } => {