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Merge commit 'f9c24ef0db390c355241445af37a5c7999a7dc66' into hc-bump-bridges-subtree-take-2

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This commit is contained in:
Hernando Castano
2021-05-04 15:27:09 -04:00
parent e33e74525e f9c24ef0db
commit 63f4c9db6c
82 changed files with 2056 additions and 816 deletions
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polkadot/bridges/modules/grandpa/src/lib.rs
+66 -21
View File
@@ -42,7 +42,7 @@ use bp_header_chain::justification::GrandpaJustification;
use bp_header_chain::InitializationData;
use bp_runtime::{BlockNumberOf, Chain, HashOf, HasherOf, HeaderOf};
use finality_grandpa::voter_set::VoterSet;
use frame_support::ensure;
use frame_support::{ensure, fail};
use frame_system::{ensure_signed, RawOrigin};
use sp_finality_grandpa::{ConsensusLog, GRANDPA_ENGINE_ID};
use sp_runtime::traits::{BadOrigin, Header as HeaderT, Zero};
@@ -143,11 +143,17 @@ pub mod pallet {
let (hash, number) = (finality_target.hash(), finality_target.number());
log::trace!(target: "runtime::bridge-grandpa", "Going to try and finalize header {:?}", finality_target);
let best_finalized = <ImportedHeaders<T, I>>::get(<BestFinalized<T, I>>::get()).expect(
"In order to reach this point the bridge must have been initialized. Afterwards,
every time `BestFinalized` is updated `ImportedHeaders` is also updated. Therefore
`ImportedHeaders` must contain an entry for `BestFinalized`.",
);
let best_finalized = match <ImportedHeaders<T, I>>::get(<BestFinalized<T, I>>::get()) {
Some(best_finalized) => best_finalized,
None => {
log::error!(
target: "runtime::bridge-grandpa",
"Cannot finalize header {:?} because pallet is not yet initialized",
finality_target,
);
fail!(<Error<T, I>>::NotInitialized);
}
};
// We do a quick check here to ensure that our header chain is making progress and isn't
// "travelling back in time" (which could be indicative of something bad, e.g a hard-fork).
@@ -158,20 +164,8 @@ pub mod pallet {
verify_justification::<T, I>(&justification, hash, *number, authority_set)?;
let _enacted = try_enact_authority_change::<T, I>(&finality_target, set_id)?;
let index = <ImportedHashesPointer<T, I>>::get();
let pruning = <ImportedHashes<T, I>>::try_get(index);
<BestFinalized<T, I>>::put(hash);
<ImportedHeaders<T, I>>::insert(hash, finality_target);
<ImportedHashes<T, I>>::insert(index, hash);
<RequestCount<T, I>>::mutate(|count| *count += 1);
// Update ring buffer pointer and remove old header.
<ImportedHashesPointer<T, I>>::put((index + 1) % T::HeadersToKeep::get());
if let Ok(hash) = pruning {
log::debug!(target: "runtime::bridge-grandpa", "Pruning old header: {:?}.", hash);
<ImportedHeaders<T, I>>::remove(hash);
}
insert_header::<T, I>(finality_target, hash);
log::info!(target: "runtime::bridge-grandpa", "Succesfully imported finalized header with hash {:?}!", hash);
Ok(().into())
@@ -346,6 +340,8 @@ pub mod pallet {
///
/// This is the case for non-standard (e.g forced) authority set changes.
UnsupportedScheduledChange,
/// The pallet is not yet initialized.
NotInitialized,
/// The pallet has already been initialized.
AlreadyInitialized,
/// All pallet operations are halted.
@@ -427,6 +423,25 @@ pub mod pallet {
)
}
/// Import a previously verified header to the storage.
///
/// Note this function solely takes care of updating the storage and pruning old entries,
/// but does not verify the validaty of such import.
pub(crate) fn insert_header<T: Config<I>, I: 'static>(header: BridgedHeader<T, I>, hash: BridgedBlockHash<T, I>) {
let index = <ImportedHashesPointer<T, I>>::get();
let pruning = <ImportedHashes<T, I>>::try_get(index);
<BestFinalized<T, I>>::put(hash);
<ImportedHeaders<T, I>>::insert(hash, header);
<ImportedHashes<T, I>>::insert(index, hash);
// Update ring buffer pointer and remove old header.
<ImportedHashesPointer<T, I>>::put((index + 1) % T::HeadersToKeep::get());
if let Ok(hash) = pruning {
log::debug!(target: "runtime::bridge-grandpa", "Pruning old header: {:?}.", hash);
<ImportedHeaders<T, I>>::remove(hash);
}
}
/// Since this writes to storage with no real checks this should only be used in functions that
/// were called by a trusted origin.
pub(crate) fn initialize_bridge<T: Config<I>, I: 'static>(
@@ -441,8 +456,8 @@ pub mod pallet {
let initial_hash = header.hash();
<InitialHash<T, I>>::put(initial_hash);
<BestFinalized<T, I>>::put(initial_hash);
<ImportedHeaders<T, I>>::insert(initial_hash, header);
<ImportedHashesPointer<T, I>>::put(0);
insert_header::<T, I>(header, initial_hash);
let authority_set = bp_header_chain::AuthoritySet::new(authority_list, set_id);
<CurrentAuthoritySet<T, I>>::put(authority_set);
@@ -450,6 +465,29 @@ pub mod pallet {
<IsHalted<T, I>>::put(is_halted);
}
#[cfg(feature = "runtime-benchmarks")]
pub(crate) fn bootstrap_bridge<T: Config<I>, I: 'static>(
init_params: super::InitializationData<BridgedHeader<T, I>>,
) {
let start_number = *init_params.header.number();
let end_number = start_number + T::HeadersToKeep::get().into();
initialize_bridge::<T, I>(init_params);
let mut number = start_number;
while number < end_number {
number = number + sp_runtime::traits::One::one();
let header = <BridgedHeader<T, I>>::new(
number,
Default::default(),
Default::default(),
Default::default(),
Default::default(),
);
let hash = header.hash();
insert_header::<T, I>(header, hash);
}
}
/// Ensure that the origin is either root, or `PalletOwner`.
fn ensure_owner_or_root<T: Config<I>, I: 'static>(origin: T::Origin) -> Result<(), BadOrigin> {
match origin.into() {
@@ -737,6 +775,13 @@ mod tests {
})
}
#[test]
fn pallet_rejects_header_if_not_initialized_yet() {
run_test(|| {
assert_noop!(submit_finality_proof(1), Error::<TestRuntime>::NotInitialized);
});
}
#[test]
fn succesfully_imports_header_with_valid_finality() {
run_test(|| {