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Backport: Implement basic equivocations detection loop (#2375)

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* Implement basic equivocations detection loop (#2367)

* FinalityProofsBuf adjustments

- store a Vec<FinalityProof>
- transform prune `buf_limit` to Option

* FinalityProof: add target_header_hash()

* Target client: implement best_synced_header_hash()

* Implement first version of the equivocations detection loop

* Address code review comments

* Leftover

* polkadot-staging adjustments
This commit is contained in:
Serban Iorga
2023-08-23 19:31:17 +03:00
committed by Bastian Köcher
parent cc3bbc690b
commit 588508acd4
18 changed files with 572 additions and 79 deletions
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bridges/relays/finality/src/headers.rs
+11 -10
View File
@@ -19,6 +19,7 @@ use crate::{
SourceClient, SourceHeader, TargetClient,
};
use bp_header_chain::FinalityProof;
use std::cmp::Ordering;
/// Unjustified headers container. Ordered by header number.
@@ -120,18 +121,18 @@ impl<P: FinalitySyncPipeline> JustifiedHeaderSelector<P> {
while let (Some(finality_proof), Some(unjustified_header)) =
(maybe_finality_proof, maybe_unjustified_header)
{
match finality_proof.0.cmp(&unjustified_header.number()) {
match finality_proof.target_header_number().cmp(&unjustified_header.number()) {
Ordering::Equal => {
log::trace!(
target: "bridge",
"Managed to improve selected {} finality proof {:?} to {:?}.",
P::SOURCE_NAME,
maybe_justified_header.as_ref().map(|justified_header| justified_header.number()),
finality_proof.0
finality_proof.target_header_number()
);
return Some(JustifiedHeader {
header: unjustified_header.clone(),
proof: finality_proof.1.clone(),
proof: finality_proof.clone(),
})
},
Ordering::Less => maybe_unjustified_header = unjustified_headers_iter.next(),
@@ -160,7 +161,7 @@ mod tests {
fn select_better_recent_finality_proof_works() {
// if there are no unjustified headers, nothing is changed
let finality_proofs_buf =
FinalityProofsBuf::<TestFinalitySyncPipeline>::new(vec![(5, TestFinalityProof(5))]);
FinalityProofsBuf::<TestFinalitySyncPipeline>::new(vec![TestFinalityProof(5)]);
let justified_header =
JustifiedHeader { header: TestSourceHeader(false, 2, 2), proof: TestFinalityProof(2) };
let selector = JustifiedHeaderSelector::Regular(vec![], justified_header.clone());
@@ -179,8 +180,8 @@ mod tests {
// if there's no intersection between recent finality proofs and unjustified headers,
// nothing is changed
let finality_proofs_buf = FinalityProofsBuf::<TestFinalitySyncPipeline>::new(vec![
(1, TestFinalityProof(1)),
(4, TestFinalityProof(4)),
TestFinalityProof(1),
TestFinalityProof(4),
]);
let justified_header =
JustifiedHeader { header: TestSourceHeader(false, 2, 2), proof: TestFinalityProof(2) };
@@ -193,8 +194,8 @@ mod tests {
// if there's intersection between recent finality proofs and unjustified headers, but there
// are no proofs in this intersection, nothing is changed
let finality_proofs_buf = FinalityProofsBuf::<TestFinalitySyncPipeline>::new(vec![
(7, TestFinalityProof(7)),
(11, TestFinalityProof(11)),
TestFinalityProof(7),
TestFinalityProof(11),
]);
let justified_header =
JustifiedHeader { header: TestSourceHeader(false, 2, 2), proof: TestFinalityProof(2) };
@@ -213,8 +214,8 @@ mod tests {
// - this better (last from intersection) proof is selected;
// - 'obsolete' unjustified headers are pruned.
let finality_proofs_buf = FinalityProofsBuf::<TestFinalitySyncPipeline>::new(vec![
(7, TestFinalityProof(7)),
(9, TestFinalityProof(9)),
TestFinalityProof(7),
TestFinalityProof(9),
]);
let justified_header =
JustifiedHeader { header: TestSourceHeader(false, 2, 2), proof: TestFinalityProof(2) };