Improve logging and cleanup in miner around block sealing (#10745)
* Stop breaking out of loop if a non-canonical hash is found * include expected hash in log msg * More logging * Scope * Syntax * Log in blank RollingFinality Escalate bad proposer to warning * Check validator set size: warn if 1 or even number * More readable code * Use SimpleList::new * Extensive logging on unexpected non-canonical hash * Wording * wip * Update ethcore/blockchain/src/blockchain.rs Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com> * Improved logging, address grumbles * Update ethcore/src/engines/validator_set/simple_list.rs Co-Authored-By: Luke Schoen <ltfschoen@users.noreply.github.com> * Report benign misbehaviour iff currently a validator * Report malicious behaviour iff we're a validator * Escalate to warning and fix wording * Test reporting behaviour Don't require node to be part of the validator set to report malicious behaviour * Include missing parent hash in MissingParent error * Update ethcore/src/engines/validator_set/simple_list.rs Co-Authored-By: Luke Schoen <ltfschoen@users.noreply.github.com> * docs * remove unneeded into() Move check for parent_step == step for clarity&efficiency Remove dead code for Seal::Proposal * typo * Wording * naming * WIP * cleanup * cosmetics * cosmetics and one less lvar * spelling * Better loggin when a block is already in chain * More logging * On second thought non-validators are allowed to report * cleanup * remove dead code * Keep track of the hash of the last imported block * Let it lock * Serialize access to block sealing * Take a lock while sealing a block * Cleanup * whitespace
This commit is contained in:
David
GitHub
parent
fafb534cd3
commit
de906d4afd
@ -755,8 +755,8 @@ impl BlockChain {
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Some(TreeRoute {
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blocks: from_branch,
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ancestor: current_from,
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index: index,
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is_from_route_finalized: is_from_route_finalized,
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index,
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is_from_route_finalized,
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})
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}
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@ -178,7 +178,6 @@ impl<'x> OpenBlock<'x> {
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) -> Result<Self, Error> {
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let number = parent.number() + 1;
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let state = State::from_existing(db, parent.state_root().clone(), engine.account_start_nonce(number), factories)?;
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let mut r = OpenBlock { block: ExecutedBlock::new(state, last_hashes, tracing), engine, parent: parent.clone()};
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r.block.header.set_parent_hash(parent.hash());
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@ -473,7 +473,16 @@ impl Importer {
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//
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// The header passed is from the original block data and is sealed.
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// TODO: should return an error if ImportRoute is none, issue #9910
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fn commit_block<B>(&self, block: B, header: &Header, block_data: encoded::Block, pending: Option<PendingTransition>, client: &Client) -> ImportRoute where B: Drain {
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fn commit_block<B>(
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&self,
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block: B,
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header: &Header,
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block_data: encoded::Block,
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pending: Option<PendingTransition>,
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client: &Client
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) -> ImportRoute
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where B: Drain
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{
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let hash = &header.hash();
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let number = header.number();
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let parent = header.parent_hash();
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@ -499,18 +508,17 @@ impl Importer {
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};
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let best = {
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let hash = best_hash;
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let header = chain.block_header_data(&hash)
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let header = chain.block_header_data(&best_hash)
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.expect("Best block is in the database; qed")
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.decode()
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.expect("Stored block header is valid RLP; qed");
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let details = chain.block_details(&hash)
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let details = chain.block_details(&best_hash)
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.expect("Best block is in the database; qed");
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ExtendedHeader {
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parent_total_difficulty: details.total_difficulty - *header.difficulty(),
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is_finalized: details.is_finalized,
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header: header,
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header,
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}
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};
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@ -548,7 +556,7 @@ impl Importer {
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}).collect();
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let route = chain.insert_block(&mut batch, block_data, receipts.clone(), ExtrasInsert {
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fork_choice: fork_choice,
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fork_choice,
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is_finalized,
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});
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@ -2410,11 +2418,11 @@ impl ImportSealedBlock for Client {
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let _import_lock = self.importer.import_lock.lock();
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trace_time!("import_sealed_block");
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let block_data = block.rlp_bytes();
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let block_bytes = block.rlp_bytes();
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let pending = self.importer.check_epoch_end_signal(
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&header,
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&block_data,
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&block_bytes,
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&block.receipts,
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block.state.db(),
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self
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@ -2422,7 +2430,7 @@ impl ImportSealedBlock for Client {
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let route = self.importer.commit_block(
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block,
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&header,
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encoded::Block::new(block_data),
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encoded::Block::new(block_bytes),
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pending,
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self
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);
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@ -247,7 +247,7 @@ impl EpochManager {
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None => {
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// this really should never happen unless the block passed
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// hasn't got a parent in the database.
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warn!(target: "engine", "No genesis transition found.");
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warn!(target: "engine", "No genesis transition found. Block hash {} does not have a parent in the DB", hash);
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return false;
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}
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};
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@ -570,7 +570,7 @@ fn header_empty_steps_signers(header: &Header, empty_steps_transition: u64) -> R
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fn step_proposer(validators: &dyn ValidatorSet, bh: &H256, step: u64) -> Address {
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let proposer = validators.get(bh, step as usize);
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trace!(target: "engine", "Fetched proposer for step {}: {}", step, proposer);
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trace!(target: "engine", "step_proposer: Fetched proposer for step {}: {}", step, proposer);
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proposer
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}
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@ -823,8 +823,8 @@ impl AuthorityRound {
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if skipped_primary != me {
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// Stop reporting once validators start repeating.
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if !reported.insert(skipped_primary) { break; }
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trace!(target: "engine", "Reporting benign misbehaviour (cause: skipped step) at block #{}, epoch set number {}. Own address: {}",
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header.number(), set_number, me);
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trace!(target: "engine", "Reporting benign misbehaviour (cause: skipped step) at block #{}, epoch set number {}, step proposer={:#x}. Own address: {}",
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header.number(), set_number, skipped_primary, me);
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self.validators.report_benign(&skipped_primary, set_number, header.number());
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} else {
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trace!(target: "engine", "Primary that skipped is self, not self-reporting. Own address: {}", me);
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@ -1110,12 +1110,12 @@ impl Engine for AuthorityRound {
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// filter messages from old and future steps and different parents
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let empty_steps = if header.number() >= self.empty_steps_transition {
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self.empty_steps(parent_step.into(), step.into(), *header.parent_hash())
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self.empty_steps(parent_step, step, *header.parent_hash())
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} else {
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Vec::new()
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};
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let expected_diff = calculate_score(parent_step, step.into(), empty_steps.len().into());
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let expected_diff = calculate_score(parent_step, step, empty_steps.len());
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if header.difficulty() != &expected_diff {
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debug!(target: "engine", "Aborting seal generation. The step or empty_steps have changed in the meantime. {:?} != {:?}",
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@ -1123,12 +1123,17 @@ impl Engine for AuthorityRound {
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return Seal::None;
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}
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if parent_step > step.into() {
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if parent_step > step {
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warn!(target: "engine", "Aborting seal generation for invalid step: {} > {}", parent_step, step);
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return Seal::None;
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} else if parent_step == step {
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// this is guarded against by `can_propose` unless the block was signed
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// on the same step (implies same key) and on a different node.
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warn!("Attempted to seal block on the same step as parent. Is this authority sealing with more than one node?");
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return Seal::None;
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}
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let (validators, set_number) = match self.epoch_set(header) {
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let (validators, epoch_transition_number) = match self.epoch_set(header) {
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Err(err) => {
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warn!(target: "engine", "Unable to generate seal: {}", err);
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return Seal::None;
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@ -1137,13 +1142,7 @@ impl Engine for AuthorityRound {
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};
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if is_step_proposer(&*validators, header.parent_hash(), step, header.author()) {
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// this is guarded against by `can_propose` unless the block was signed
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// on the same step (implies same key) and on a different node.
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if parent_step == step {
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warn!("Attempted to seal block on the same step as parent. Is this authority sealing with more than one node?");
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return Seal::None;
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}
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trace!(target: "engine", "generate_seal: we are step proposer for step={}, block=#{}", step, header.number());
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// if there are no transactions to include in the block, we don't seal and instead broadcast a signed
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// `EmptyStep(step, parent_hash)` message. If we exceed the maximum amount of `empty_step` rounds we proceed
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// with the seal.
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@ -1152,6 +1151,7 @@ impl Engine for AuthorityRound {
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empty_steps.len() < self.maximum_empty_steps {
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if self.step.can_propose.compare_and_swap(true, false, AtomicOrdering::SeqCst) {
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trace!(target: "engine", "generate_seal: generating empty step at step={}, block=#{}", step, header.number());
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self.generate_empty_step(header.parent_hash());
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}
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@ -1178,7 +1178,8 @@ impl Engine for AuthorityRound {
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// report any skipped primaries between the parent block and
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// the block we're sealing, unless we have empty steps enabled
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if header.number() < self.empty_steps_transition {
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self.report_skipped(header, step, parent_step, &*validators, set_number);
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trace!(target: "engine", "generate_seal: reporting misbehaviour for step={}, block=#{}", step, header.number());
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self.report_skipped(header, step, parent_step, &*validators, epoch_transition_number);
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}
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let mut fields = vec![
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@ -1189,7 +1190,7 @@ impl Engine for AuthorityRound {
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if let Some(empty_steps_rlp) = empty_steps_rlp {
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fields.push(empty_steps_rlp);
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}
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trace!(target: "engine", "generate_seal: returning Seal::Regular for step={}, block=#{}", step, header.number());
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return Seal::Regular(fields);
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}
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} else {
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@ -1199,7 +1200,7 @@ impl Engine for AuthorityRound {
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trace!(target: "engine", "generate_seal: {} not a proposer for step {}.",
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header.author(), step);
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}
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trace!(target: "engine", "generate_seal: returning Seal::None for step={}, block=#{}", step, header.number());
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Seal::None
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}
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@ -1739,13 +1740,13 @@ mod tests {
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engine.set_signer(Box::new((tap.clone(), addr1, "1".into())));
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match engine.generate_seal(&b1, &genesis_header) {
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Seal::None | Seal::Proposal(_) => panic!("wrong seal"),
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Seal::None => panic!("wrong seal"),
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Seal::Regular(_) => {
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engine.step();
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engine.set_signer(Box::new((tap.clone(), addr2, "0".into())));
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match engine.generate_seal(&b2, &genesis_header) {
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Seal::Regular(_) | Seal::Proposal(_) => panic!("sealed despite wrong difficulty"),
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Seal::Regular(_) => panic!("sealed despite wrong difficulty"),
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Seal::None => {}
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}
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}
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@ -156,8 +156,6 @@ impl error::Error for EngineError {
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/// Seal type.
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#[derive(Debug, PartialEq, Eq)]
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pub enum Seal {
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/// Proposal seal; should be broadcasted, but not inserted into blockchain.
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Proposal(Vec<Bytes>),
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/// Regular block seal; should be part of the blockchain.
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Regular(Vec<Bytes>),
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/// Engine does not generate seal for this block right now.
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@ -118,6 +118,7 @@ impl ValidatorSet for ValidatorContract {
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}
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fn report_benign(&self, address: &Address, _set_block: BlockNumber, block: BlockNumber) {
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trace!(target: "engine", "validator set recording benign misbehaviour at block #{} by {:#x}", block, address);
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let data = validator_report::functions::report_benign::encode_input(*address, block);
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match self.transact(data) {
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Ok(_) => warn!(target: "engine", "Reported benign validator misbehaviour {}", address),
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@ -162,6 +163,7 @@ mod tests {
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#[test]
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fn reports_validators() {
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let _ = ::env_logger::try_init();
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let tap = Arc::new(AccountProvider::transient_provider());
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let v1 = tap.insert_account(keccak("1").into(), &"".into()).unwrap();
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let client = generate_dummy_client_with_spec(Spec::new_validator_contract);
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@ -74,6 +74,8 @@ impl ::engines::StateDependentProof for StateProof {
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/// The validator contract should have the following interface:
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pub struct ValidatorSafeContract {
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contract_address: Address,
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/// The LRU cache is indexed by the parent_hash, so given a hash, the value
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/// is the validator set valid for the blocks following that hash.
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validators: RwLock<MemoryLruCache<H256, SimpleList>>,
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client: RwLock<Option<Weak<dyn EngineClient>>>, // TODO [keorn]: remove
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}
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@ -471,6 +473,7 @@ mod tests {
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#[test]
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fn knows_validators() {
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let _ = env_logger::try_init();
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let tap = Arc::new(AccountProvider::transient_provider());
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let s0: Secret = keccak("1").into();
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let v0 = tap.insert_account(s0.clone(), &"".into()).unwrap();
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@ -93,6 +93,7 @@ impl ValidatorSet for TestSet {
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}
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fn report_benign(&self, _validator: &Address, _set_block: BlockNumber, block: BlockNumber) {
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trace!(target: "engine", "test validator set recording benign misbehaviour");
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self.last_benign.store(block as usize, AtomicOrdering::SeqCst)
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}
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}
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@ -146,7 +146,7 @@ pub struct MinerOptions {
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pub tx_queue_strategy: PrioritizationStrategy,
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/// Simple senders penalization.
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pub tx_queue_penalization: Penalization,
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/// Do we want to mark transactions recieved locally (e.g. RPC) as local if we don't have the sending account?
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/// Do we want to mark transactions received locally (e.g. RPC) as local if we don't have the sending account?
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pub tx_queue_no_unfamiliar_locals: bool,
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/// Do we refuse to accept service transactions even if sender is certified.
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pub refuse_service_transactions: bool,
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@ -231,6 +231,10 @@ impl SealingWork {
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fn reseal_allowed(&self) -> bool {
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Instant::now() > self.next_allowed_reseal
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}
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fn work_available(&self) -> bool {
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self.queue.peek_last_ref().is_some()
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}
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}
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/// Keeps track of transactions using priority queue and holds currently mined block.
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@ -620,6 +624,7 @@ impl Miner {
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trace!(target: "miner", "requires_reseal: sealing enabled");
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const SEALING_TIMEOUT_IN_BLOCKS : u64 = 5;
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// Disable sealing if there were no requests for SEALING_TIMEOUT_IN_BLOCKS
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let had_requests = sealing.last_request.map(|last_request|
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best_block.saturating_sub(last_request) <= SEALING_TIMEOUT_IN_BLOCKS
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@ -655,8 +660,8 @@ impl Miner {
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// TODO: (https://github.com/paritytech/parity-ethereum/issues/10407)
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// This is only used in authority_round path, and should be refactored to merge with the other seal() path.
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// Attempts to perform internal sealing (one that does not require work) and handles the result depending on the
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// type of Seal.
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// Attempts to perform internal sealing (one that does not require work: e.g. Clique
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// and Aura) and handles the result depending on the type of Seal.
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fn seal_and_import_block_internally<C>(&self, chain: &C, block: ClosedBlock) -> bool
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where C: BlockChain + SealedBlockImporter,
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{
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@ -669,45 +674,30 @@ impl Miner {
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return false
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}
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}
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trace!(target: "miner", "seal_block_internally: attempting internal seal.");
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let block_number = block.header.number();
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trace!(target: "miner", "seal_block_internally: attempting internal seal for block #{}", block_number);
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let parent_header = match chain.block_header(BlockId::Hash(*block.header.parent_hash())) {
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Some(h) => {
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match h.decode() {
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Ok(decoded_hdr) => decoded_hdr,
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Err(_) => return false
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Err(e) => {
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error!(target: "miner", "seal_block_internally: Block #{}, Could not decode header from parent block (hash={}): {:?}", block_number, block.header.parent_hash(), e);
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return false
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}
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}
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None => return false,
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},
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None => {
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trace!(target: "miner", "Block #{}: Parent with hash={} does not exist in our DB", block_number, block.header.parent_hash());
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return false
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},
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};
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let sealing_result =
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match self.engine.generate_seal(&block, &parent_header) {
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// Save proposal for later seal submission and broadcast it.
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Seal::Proposal(seal) => {
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trace!(target: "miner", "Received a Proposal seal.");
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{
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let mut sealing = self.sealing.lock();
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sealing.next_mandatory_reseal = Instant::now() + self.options.reseal_max_period;
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sealing.queue.set_pending(block.clone());
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sealing.queue.use_last_ref();
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}
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block
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.lock()
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.seal(&*self.engine, seal)
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.map(|sealed| {
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chain.broadcast_proposal_block(sealed);
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true
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})
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.unwrap_or_else(|e| {
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warn!("ERROR: seal failed when given internally generated seal: {}", e);
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false
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})
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},
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// Directly import a regular sealed block.
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Seal::Regular(seal) => {
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trace!(target: "miner", "Received a Regular seal.");
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trace!(target: "miner", "Block #{}: Received a Regular seal.", block_number);
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{
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let mut sealing = self.sealing.lock();
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sealing.next_mandatory_reseal = Instant::now() + self.options.reseal_max_period;
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@ -717,15 +707,22 @@ impl Miner {
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.lock()
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.seal(&*self.engine, seal)
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.map(|sealed| {
|
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chain.import_sealed_block(sealed).is_ok()
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match chain.import_sealed_block(sealed) {
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Ok(_) => true,
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Err(e) => {
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error!(target: "miner", "Block #{}: seal_and_import_block_internally: import_sealed_block returned {:?}", block_number, e);
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false
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}
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}
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})
|
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.unwrap_or_else(|e| {
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warn!("ERROR: seal failed when given internally generated seal: {}", e);
|
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warn!("ERROR: Block #{}, importing sealed block failed when given internally generated seal: {}", block_number, e);
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false
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})
|
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},
|
||||
Seal::None => false,
|
||||
}
|
||||
};
|
||||
sealing_result
|
||||
}
|
||||
|
||||
/// Prepares work which has to be done to seal.
|
||||
@ -793,28 +790,30 @@ impl Miner {
|
||||
}
|
||||
|
||||
/// Prepare a pending block. Returns the preparation status.
|
||||
fn prepare_pending_block<C>(&self, client: &C) -> BlockPreparationStatus where
|
||||
/// Only used by externally sealing engines.
|
||||
fn prepare_pending_block<C>(&self, client: &C) -> BlockPreparationStatus
|
||||
where
|
||||
C: BlockChain + CallContract + BlockProducer + SealedBlockImporter + Nonce + Sync,
|
||||
{
|
||||
trace!(target: "miner", "prepare_pending_block: entering");
|
||||
let prepare_new = {
|
||||
let mut sealing = self.sealing.lock();
|
||||
let have_work = sealing.queue.peek_last_ref().is_some();
|
||||
trace!(target: "miner", "prepare_pending_block: have_work={}", have_work);
|
||||
if !have_work {
|
||||
sealing.enabled = true;
|
||||
true
|
||||
} else {
|
||||
false
|
||||
}
|
||||
};
|
||||
// Unless we are `--force-sealing` we create pending blocks if
|
||||
// 1. we have local pending transactions
|
||||
// 2. or someone is requesting `eth_getWork`
|
||||
// When either condition is true, `sealing.enabled` is flipped to true (and if you
|
||||
// have no more local transactions or stop calling `eth_getWork`, it is set to `false`).
|
||||
|
||||
// Here we check if there are pending blocks already (if so, we don't need to create
|
||||
// a new one); if there are none, we set `sealing.enabled` to true because the
|
||||
// calling code expects it to be on (or they wouldn't have called this method).
|
||||
// Yes, it's a bit convoluted.
|
||||
let prepare_new_block = self.maybe_enable_sealing();
|
||||
|
||||
if self.engine.sealing_state() != SealingState::External {
|
||||
trace!(target: "miner", "prepare_pending_block: engine not sealing externally; not preparing");
|
||||
return BlockPreparationStatus::NotPrepared;
|
||||
}
|
||||
|
||||
let preparation_status = if prepare_new {
|
||||
let preparation_status = if prepare_new_block {
|
||||
// --------------------------------------------------------------------------
|
||||
// | NOTE Code below requires sealing locks. |
|
||||
// | Make sure to release the locks before calling that method. |
|
||||
@ -844,25 +843,34 @@ impl Miner {
|
||||
preparation_status
|
||||
}
|
||||
|
||||
|
||||
/// Set `sealing.enabled` to true if there is available work to do (pending or in the queue).
|
||||
fn maybe_enable_sealing(&self) -> bool {
|
||||
let mut sealing = self.sealing.lock();
|
||||
if !sealing.work_available() {
|
||||
trace!(target: "miner", "maybe_enable_sealing: we have work to do so enabling sealing");
|
||||
sealing.enabled = true;
|
||||
true
|
||||
} else {
|
||||
false
|
||||
}
|
||||
}
|
||||
/// Prepare pending block, check whether sealing is needed, and then update sealing.
|
||||
fn prepare_and_update_sealing<C: miner::BlockChainClient>(&self, chain: &C) {
|
||||
use miner::MinerService;
|
||||
|
||||
// Make sure to do it after transaction is imported and lock is dropped.
|
||||
// We need to create pending block and enable sealing.
|
||||
let sealing_state = self.engine.sealing_state();
|
||||
if sealing_state == SealingState::Ready
|
||||
|| self.prepare_pending_block(chain) == BlockPreparationStatus::NotPrepared {
|
||||
// If new block has not been prepared (means we already had one)
|
||||
// or Engine might be able to seal internally,
|
||||
// we need to update sealing.
|
||||
self.update_sealing(chain);
|
||||
match self.engine.sealing_state() {
|
||||
SealingState::Ready => self.update_sealing(chain),
|
||||
SealingState::External => {
|
||||
// this calls `maybe_enable_sealing()`
|
||||
if self.prepare_pending_block(chain) == BlockPreparationStatus::NotPrepared {
|
||||
self.update_sealing(chain)
|
||||
}
|
||||
}
|
||||
SealingState::NotReady => { self.maybe_enable_sealing(); },
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
const SEALING_TIMEOUT_IN_BLOCKS : u64 = 5;
|
||||
|
||||
impl miner::MinerService for Miner {
|
||||
type State = State<::state_db::StateDB>;
|
||||
|
||||
@ -1720,12 +1728,16 @@ mod tests {
|
||||
|
||||
#[test]
|
||||
fn internal_seals_without_work() {
|
||||
let _ = env_logger::try_init();
|
||||
let spec = Spec::new_instant();
|
||||
let miner = Miner::new_for_tests(&spec, None);
|
||||
|
||||
let client = generate_dummy_client(2);
|
||||
|
||||
let import = miner.import_external_transactions(&*client, vec![transaction_with_chain_id(spec.chain_id()).into()]).pop().unwrap();
|
||||
let import = miner.import_external_transactions(
|
||||
&*client,
|
||||
vec![transaction_with_chain_id(spec.chain_id()).into()]
|
||||
).pop().unwrap();
|
||||
assert_eq!(import.unwrap(), ());
|
||||
|
||||
miner.update_sealing(&*client);
|
||||
@ -1733,7 +1745,10 @@ mod tests {
|
||||
assert!(miner.pending_block(0).is_none());
|
||||
assert_eq!(client.chain_info().best_block_number, 3 as BlockNumber);
|
||||
|
||||
assert!(miner.import_own_transaction(&*client, PendingTransaction::new(transaction_with_chain_id(spec.chain_id()).into(), None)).is_ok());
|
||||
assert!(miner.import_own_transaction(
|
||||
&*client,
|
||||
PendingTransaction::new(transaction_with_chain_id(spec.chain_id()).into(), None)
|
||||
).is_ok());
|
||||
|
||||
miner.update_sealing(&*client);
|
||||
client.flush_queue();
|
||||
|
||||
@ -302,7 +302,7 @@ pub fn prove_transaction_virtual<H: AsHashDB<KeccakHasher, DBValue> + Send + Syn
|
||||
/// Reverting a checkpoint with `revert_to_checkpoint` involves copying
|
||||
/// original values from the latest checkpoint back into `cache`. The code
|
||||
/// takes care not to overwrite cached storage while doing that.
|
||||
/// checkpoint can be discarded with `discard_checkpoint`. All of the orignal
|
||||
/// A checkpoint can be discarded with `discard_checkpoint`. All of the original
|
||||
/// backed-up values are moved into a parent checkpoint (if any).
|
||||
///
|
||||
pub struct State<B> {
|
||||
|
||||
@ -548,12 +548,18 @@ impl BlockDownloader {
|
||||
let result = if let Some(receipts) = receipts {
|
||||
io.chain().queue_ancient_block(block, receipts)
|
||||
} else {
|
||||
trace_sync!(self, "Importing block #{}/{}", number, h);
|
||||
io.chain().import_block(block)
|
||||
};
|
||||
|
||||
match result {
|
||||
Err(EthcoreError::Import(ImportError::AlreadyInChain)) => {
|
||||
trace_sync!(self, "Block already in chain {:?}", h);
|
||||
let is_canonical = if io.chain().block_hash(BlockId::Number(number)).is_some() {
|
||||
"canoncial"
|
||||
} else {
|
||||
"not canonical"
|
||||
};
|
||||
trace_sync!(self, "Block #{} is already in chain {:?} – {}", number, h, is_canonical);
|
||||
self.block_imported(&h, number, &parent);
|
||||
},
|
||||
Err(EthcoreError::Import(ImportError::AlreadyQueued)) => {
|
||||
|
||||
@ -42,7 +42,7 @@ impl<T> UsingQueue<T> {
|
||||
UsingQueue {
|
||||
pending: None,
|
||||
in_use: vec![],
|
||||
max_size: max_size,
|
||||
max_size,
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -64,7 +64,7 @@ pub trait JournalDB: KeyedHashDB {
|
||||
fn latest_era(&self) -> Option<u64>;
|
||||
|
||||
/// Journal recent database operations as being associated with a given era and id.
|
||||
// TODO: give the overlay to this function so journaldbs don't manage the overlays themeselves.
|
||||
// TODO: give the overlay to this function so journaldbs don't manage the overlays themselves.
|
||||
fn journal_under(&mut self, batch: &mut DBTransaction, now: u64, id: &H256) -> io::Result<u32>;
|
||||
|
||||
/// Mark a given block as canonical, indicating that competing blocks' states may be pruned out.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user