diff --git a/bridges/modules/grandpa/src/lib.rs b/bridges/modules/grandpa/src/lib.rs index f9c3ab68a06f..b789aedef2c8 100644 --- a/bridges/modules/grandpa/src/lib.rs +++ b/bridges/modules/grandpa/src/lib.rs @@ -39,13 +39,12 @@ pub use storage_types::StoredAuthoritySet; use bp_header_chain::{ - justification::GrandpaJustification, ChainWithGrandpa, HeaderChain, InitializationData, - StoredHeaderData, StoredHeaderDataBuilder, + justification::GrandpaJustification, ChainWithGrandpa, GrandpaConsensusLogReader, HeaderChain, + InitializationData, StoredHeaderData, StoredHeaderDataBuilder, }; use bp_runtime::{BlockNumberOf, HashOf, HasherOf, HeaderId, HeaderOf, OwnedBridgeModule}; use finality_grandpa::voter_set::VoterSet; use frame_support::{dispatch::PostDispatchInfo, ensure, DefaultNoBound}; -use sp_consensus_grandpa::{ConsensusLog, GRANDPA_ENGINE_ID}; use sp_runtime::{ traits::{Header as HeaderT, Zero}, SaturatedConversion, @@ -443,11 +442,17 @@ pub mod pallet { // We don't support forced changes - at that point governance intervention is required. ensure!( - super::find_forced_change(header).is_none(), + GrandpaConsensusLogReader::>::find_forced_change( + header.digest() + ) + .is_none(), >::UnsupportedScheduledChange ); - if let Some(change) = super::find_scheduled_change(header) { + if let Some(change) = + GrandpaConsensusLogReader::>::find_scheduled_change( + header.digest(), + ) { // GRANDPA only includes a `delay` for forced changes, so this isn't valid. ensure!(change.delay == Zero::zero(), >::UnsupportedScheduledChange); @@ -616,42 +621,6 @@ impl, I: 'static> HeaderChain> for GrandpaChainH } } -pub(crate) fn find_scheduled_change( - header: &H, -) -> Option> { - use sp_runtime::generic::OpaqueDigestItemId; - - let id = OpaqueDigestItemId::Consensus(&GRANDPA_ENGINE_ID); - - let filter_log = |log: ConsensusLog| match log { - ConsensusLog::ScheduledChange(change) => Some(change), - _ => None, - }; - - // find the first consensus digest with the right ID which converts to - // the right kind of consensus log. - header.digest().convert_first(|l| l.try_to(id).and_then(filter_log)) -} - -/// Checks the given header for a consensus digest signaling a **forced** scheduled change and -/// extracts it. -pub(crate) fn find_forced_change( - header: &H, -) -> Option<(H::Number, sp_consensus_grandpa::ScheduledChange)> { - use sp_runtime::generic::OpaqueDigestItemId; - - let id = OpaqueDigestItemId::Consensus(&GRANDPA_ENGINE_ID); - - let filter_log = |log: ConsensusLog| match log { - ConsensusLog::ForcedChange(delay, change) => Some((delay, change)), - _ => None, - }; - - // find the first consensus digest with the right ID which converts to - // the right kind of consensus log. - header.digest().convert_first(|l| l.try_to(id).and_then(filter_log)) -} - /// (Re)initialize bridge with given header for using it in `pallet-bridge-messages` benchmarks. #[cfg(feature = "runtime-benchmarks")] pub fn initialize_for_benchmarks, I: 'static>(header: BridgedHeader) { @@ -685,6 +654,7 @@ mod tests { storage::generator::StorageValue, }; use frame_system::{EventRecord, Phase}; + use sp_consensus_grandpa::{ConsensusLog, GRANDPA_ENGINE_ID}; use sp_core::Get; use sp_runtime::{Digest, DigestItem, DispatchError}; diff --git a/bridges/primitives/header-chain/src/lib.rs b/bridges/primitives/header-chain/src/lib.rs index 5b2784547289..6b9373cf1879 100644 --- a/bridges/primitives/header-chain/src/lib.rs +++ b/bridges/primitives/header-chain/src/lib.rs @@ -139,7 +139,7 @@ pub trait ConsensusLogReader { pub struct GrandpaConsensusLogReader(sp_std::marker::PhantomData); impl GrandpaConsensusLogReader { - pub fn find_authorities_change( + pub fn find_scheduled_change( digest: &Digest, ) -> Option> { // find the first consensus digest with the right ID which converts to @@ -151,11 +151,24 @@ impl GrandpaConsensusLogReader { _ => None, }) } + + pub fn find_forced_change( + digest: &Digest, + ) -> Option<(Number, sp_consensus_grandpa::ScheduledChange)> { + // find the first consensus digest with the right ID which converts to + // the right kind of consensus log. + digest + .convert_first(|log| log.consensus_try_to(&GRANDPA_ENGINE_ID)) + .and_then(|log| match log { + ConsensusLog::ForcedChange(delay, change) => Some((delay, change)), + _ => None, + }) + } } impl ConsensusLogReader for GrandpaConsensusLogReader { fn schedules_authorities_change(digest: &Digest) -> bool { - GrandpaConsensusLogReader::::find_authorities_change(digest).is_some() + GrandpaConsensusLogReader::::find_scheduled_change(digest).is_some() } } diff --git a/bridges/relays/lib-substrate-relay/src/finality/engine.rs b/bridges/relays/lib-substrate-relay/src/finality/engine.rs index f2ddd32db860..0c22ec040f91 100644 --- a/bridges/relays/lib-substrate-relay/src/finality/engine.rs +++ b/bridges/relays/lib-substrate-relay/src/finality/engine.rs @@ -237,10 +237,9 @@ impl Engine for Grandpa { // If initial header changes the GRANDPA authorities set, then we need previous authorities // to verify justification. let mut authorities_for_verification = initial_authorities_set.clone(); - let scheduled_change = - GrandpaConsensusLogReader::>::find_authorities_change( - initial_header.digest(), - ); + let scheduled_change = GrandpaConsensusLogReader::>::find_scheduled_change( + initial_header.digest(), + ); assert!( scheduled_change.as_ref().map(|c| c.delay.is_zero()).unwrap_or(true), "GRANDPA authorities change at {} scheduled to happen in {:?} blocks. We expect\