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Move where we trigger DKGs for safety reasons

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Luke Parker 2023-09-25 18:27:16 -04:00
parent 77f7794452
commit 7120bddc6f
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1 changed files with 29 additions and 25 deletions
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54
coordinator/src/main.rs
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@ -64,10 +64,11 @@ pub struct ActiveTributary<D: Db, P: P2p> {
type Tributaries<D, P> = HashMap<[u8; 32], ActiveTributary<D, P>>;
// Adds a tributary into the specified HahMap
async fn add_tributary<D: Db, P: P2p>(
// Adds a tributary into the specified HashMap
async fn add_tributary<D: Db, Pro: Processors, P: P2p>(
db: D,
key: Zeroizing<<Ristretto as Ciphersuite>::F>,
processors: &Pro,
p2p: P,
tributaries: &mut Tributaries<D, P>,
spec: TributarySpec,
@ -79,13 +80,36 @@ async fn add_tributary<D: Db, P: P2p>(
db,
spec.genesis(),
spec.start_time(),
key,
key.clone(),
spec.validators(),
p2p,
)
.await
.unwrap();
// Trigger a DKG for the newly added Tributary
// If we're rebooting, we'll re-fire this message
// This is safe due to the message-queue deduplicating based off the intent system
let set = spec.set();
processors
.send(
set.network,
processor_messages::CoordinatorMessage::KeyGen(
processor_messages::key_gen::CoordinatorMessage::GenerateKey {
id: processor_messages::key_gen::KeyGenId { set, attempt: 0 },
params: frost::ThresholdParams::new(
spec.t(),
spec.n(),
spec
.i(Ristretto::generator() * key.deref())
.expect("adding a tribuary for a set we aren't in set for"),
)
.unwrap(),
},
),
)
.await;
let reader = tributary.reader();
tributaries.insert(
@ -214,6 +238,7 @@ pub async fn scan_tributaries<
let reader = add_tributary(
raw_db.clone(),
key.clone(),
&processors,
p2p.clone(),
// This is a short-lived write acquisition, which is why it should be fine
&mut *tributaries.write().await,
@ -221,28 +246,6 @@ pub async fn scan_tributaries<
)
.await;
// Trigger a DKG for the newly added Tributary
// TODO: This needs to moved into add_tributary, or else we may never emit GenerateKey
let set = spec.set();
processors
.send(
set.network,
processor_messages::CoordinatorMessage::KeyGen(
processor_messages::key_gen::CoordinatorMessage::GenerateKey {
id: processor_messages::key_gen::KeyGenId { set, attempt: 0 },
params: frost::ThresholdParams::new(
spec.t(),
spec.n(),
spec
.i(Ristretto::generator() * key.deref())
.expect("adding a tribuary for a set we aren't in set for"),
)
.unwrap(),
},
),
)
.await;
tributary_readers.push((spec, reader));
}
}
@ -819,6 +822,7 @@ pub async fn run<D: Db, Pro: Processors, P: P2p>(
let _ = add_tributary(
raw_db.clone(),
key.clone(),
&processors,
p2p.clone(),
&mut *tributaries.write().await,
spec,