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Inline TERMINAL_BLOCK_HASH and TERMINAL_TOTAL_DIFFICULTY usages

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lsankar4033 2021-09-23 09:52:02 -07:00
parent 9d1cdf5ce1
commit 1ccb7d0a52
1 changed files with 12 additions and 9 deletions
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17
specs/merge/validator.md
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@ -65,22 +65,25 @@ All validator responsibilities remain unchanged other than those noted below. Na
* Set `block.body.execution_payload = get_execution_payload(state, execution_engine, pow_chain)` where: * Set `block.body.execution_payload = get_execution_payload(state, execution_engine, pow_chain)` where:
```python ```python
def get_pow_block_at_total_difficulty(total_difficulty: uint256, pow_chain: Sequence[PowBlock]) -> Optional[PowBlock]: def get_pow_block_at_terminal_total_difficulty(pow_chain: Sequence[PowBlock]) -> Optional[PowBlock]:
# `pow_chain` abstractly represents all blocks in the PoW chain # `pow_chain` abstractly represents all blocks in the PoW chain
for block in pow_chain: for block in pow_chain:
parent = get_pow_block(block.parent_hash) parent = get_pow_block(block.parent_hash)
if block.total_difficulty >= total_difficulty and parent.total_difficulty < total_difficulty: if block.total_difficulty >= TERMINAL_TOTAL_DIFFICULTY and parent.total_difficulty < TERMINAL_TOTAL_DIFFICULTY:
return block return block
return None return None
def get_terminal_pow_block(total_difficulty: uint256, block_hash_override: Hash32, pow_chain: Sequence[PowBlock]) -> Optional[PowBlock]: def get_terminal_pow_block(pow_chain: Sequence[PowBlock]) -> Optional[PowBlock]:
# check block hash override prior to total difficulty if TERMINAL_BLOCK_HASH != Hash32():
pow_block_overrides = [pow_block for pow_block in pow_chain if pow_block.block_hash == block_hash_override] # Check block hash override prior to total difficulty
pow_block_overrides = [pow_block for pow_block in pow_chain if pow_block.block_hash == TERMINAL_BLOCK_HASH]
if len(pow_block_overrides) != 0: if len(pow_block_overrides) != 0:
return pow_block_overrides[0] return pow_block_overrides[0]
else:
return None
return get_pow_block_at_total_difficulty(total_difficulty, pow_chain) return get_pow_block_at_terminal_total_difficulty(pow_chain)
def produce_execution_payload(state: BeaconState, def produce_execution_payload(state: BeaconState,
@ -95,7 +98,7 @@ def get_execution_payload(state: BeaconState,
execution_engine: ExecutionEngine, execution_engine: ExecutionEngine,
pow_chain: Sequence[PowBlock]) -> ExecutionPayload: pow_chain: Sequence[PowBlock]) -> ExecutionPayload:
if not is_merge_complete(state): if not is_merge_complete(state):
terminal_pow_block = get_terminal_pow_block(TERMINAL_TOTAL_DIFFICULTY, TERMINAL_BLOCK_HASH, pow_chain) terminal_pow_block = get_terminal_pow_block(pow_chain)
if terminal_pow_block is None: if terminal_pow_block is None:
# Pre-merge, empty payload # Pre-merge, empty payload
return ExecutionPayload() return ExecutionPayload()