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Handle the combination of DKG removals with re-attempts

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With a DKG removal comes a reduction in the amount of participants which was
ignored by re-attempts.

Now, we determine n/i based on the parties removed, and deterministically
obtain the context of who was removd.
This commit is contained in:
Luke Parker
2023-12-13 14:03:07 -05:00
parent 884b6a6fec
commit 77edd00725
15 changed files with 410 additions and 132 deletions
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11
coordinator/src/tests/tributary/mod.rs
View File

@@ -123,10 +123,13 @@ fn serialize_sign_data() {
#[test]
fn serialize_transaction() {
test_read_write(Transaction::RemoveParticipant(
frost::Participant::new(u16::try_from(OsRng.next_u64() >> 48).unwrap().saturating_add(1))
.unwrap(),
));
test_read_write(Transaction::RemoveParticipantDueToDkg {
attempt: u32::try_from(OsRng.next_u64() >> 32).unwrap(),
participant: frost::Participant::new(
u16::try_from(OsRng.next_u64() >> 48).unwrap().saturating_add(1),
)
.unwrap(),
});
{
let mut commitments = vec![random_vec(&mut OsRng, 512)];

4
coordinator/src/tests/tributary/sync.rs
View File

@@ -29,7 +29,7 @@ async fn sync_test() {
let mut keys = new_keys(&mut OsRng);
let spec = new_spec(&mut OsRng, &keys);
// Ensure this can have a node fail
assert!(spec.n() > spec.t());
assert!(spec.n(&[]) > spec.t());
let mut tributaries = new_tributaries(&keys, &spec)
.await
@@ -142,7 +142,7 @@ async fn sync_test() {
// Because only `t` validators are used in a commit, take n - t nodes offline
// leaving only `t` nodes. Which should force it to participate in the consensus
// of next blocks.
let spares = usize::from(spec.n() - spec.t());
let spares = usize::from(spec.n(&[]) - spec.t());
for thread in p2p_threads.iter().take(spares) {
thread.abort();
}