Skip to content

Optimistic payload import condition update #3855

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
g11tech merged 1 commit into from
Mar 14, 2022
Merged

Optimistic payload import condition update #3855

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
17 changes: 12 additions & 5 deletions packages/lodestar/src/chain/blocks/verifyBlock.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -220,20 +220,27 @@ export async function verifyBlockStateTransition(
// will either validate or prune invalid blocks
//
// When to import such blocks:
// From: https://github.com/ethereum/consensus-specs/pull/2770/files
// From: https://github.com/ethereum/consensus-specs/pull/2844
// A block MUST NOT be optimistically imported, unless either of the following
// conditions are met:
//
// 1. The justified checkpoint has execution enabled
// 2. The current slot (as per the system clock) is at least
// 1. Parent of the block has execution
// 2. The justified checkpoint has execution enabled
// 3. The current slot (as per the system clock) is at least
// SAFE_SLOTS_TO_IMPORT_OPTIMISTICALLY ahead of the slot of the block being
// imported.

const parentRoot = toHexString(block.message.parentRoot);
const parentBlock = chain.forkChoice.getBlockHex(parentRoot);
const justifiedBlock = chain.forkChoice.getJustifiedBlock();
const clockSlot = getCurrentSlot(chain.config, postState.genesisTime);

if (
justifiedBlock.executionStatus === ExecutionStatus.PreMerge &&
block.message.slot + opts.safeSlotsToImportOptimistically > clockSlot
!parentBlock ||
// Following condition is the !(Not) of the safe import condition
(parentBlock.executionStatus === ExecutionStatus.PreMerge &&
justifiedBlock.executionStatus === ExecutionStatus.PreMerge &&
block.message.slot + opts.safeSlotsToImportOptimistically > clockSlot)
) {
throw new BlockError(block, {
code: BlockErrorCode.EXECUTION_ENGINE_ERROR,
Expand Down