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Merge pull request #2575 from mkalinin/transition-td-to-terminal-td 

Change transition_td to terminal_td in the merge spec
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Danny Ryan 2021-08-30 16:28:12 -06:00 committed by GitHub
parent fff03a96d1 5a84224d1a
commit 0eb0a934a3
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3 changed files with 7 additions and 7 deletions
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6
specs/merge/fork-choice.md
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@ -73,7 +73,7 @@ def finalize_block(self: ExecutionEngine, block_hash: Hash32) -> bool:
```python
@dataclass
class TransitionStore(object):
transition_total_difficulty: uint256
terminal_total_difficulty: uint256
```
### `PowBlock`
@ -101,8 +101,8 @@ Used by fork-choice handler, `on_block`.
```python
def is_valid_terminal_pow_block(transition_store: TransitionStore, block: PowBlock, parent: PowBlock) -> bool:
is_total_difficulty_reached = block.total_difficulty >= transition_store.transition_total_difficulty
is_parent_total_difficulty_valid = parent.total_difficulty < transition_store.transition_total_difficulty
is_total_difficulty_reached = block.total_difficulty >= transition_store.terminal_total_difficulty
is_parent_total_difficulty_valid = parent.total_difficulty < transition_store.terminal_total_difficulty
return block.is_valid and is_total_difficulty_reached and is_parent_total_difficulty_valid
```

6
specs/merge/fork.md
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@ -108,7 +108,7 @@ If `state.slot % SLOTS_PER_EPOCH == 0` and `compute_epoch_at_slot(state.slot) ==
Transition store initialization occurs after the state has been modified by corresponding `upgrade_to_merge` function.
```python
def compute_transition_total_difficulty(anchor_pow_block: PowBlock) -> uint256:
def compute_terminal_total_difficulty(anchor_pow_block: PowBlock) -> uint256:
seconds_per_voting_period = EPOCHS_PER_ETH1_VOTING_PERIOD * SLOTS_PER_EPOCH * SECONDS_PER_SLOT
pow_blocks_per_voting_period = seconds_per_voting_period // SECONDS_PER_ETH1_BLOCK
pow_blocks_to_merge = TARGET_SECONDS_TO_MERGE // SECONDS_PER_ETH1_BLOCK
@ -119,8 +119,8 @@ def compute_transition_total_difficulty(anchor_pow_block: PowBlock) -> uint256:
def get_transition_store(anchor_pow_block: PowBlock) -> TransitionStore:
transition_total_difficulty = compute_transition_total_difficulty(anchor_pow_block)
return TransitionStore(transition_total_difficulty=transition_total_difficulty)
terminal_total_difficulty = compute_terminal_total_difficulty(anchor_pow_block)
return TransitionStore(terminal_total_difficulty=terminal_total_difficulty)
def initialize_transition_store(state: BeaconState) -> TransitionStore:

2
specs/merge/validator.md
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@ -95,7 +95,7 @@ def get_execution_payload(state: BeaconState,
execution_engine: ExecutionEngine,
pow_chain: Sequence[PowBlock]) -> ExecutionPayload:
if not is_merge_complete(state):
terminal_pow_block = get_pow_block_at_total_difficulty(transition_store.transition_total_difficulty, pow_chain)
terminal_pow_block = get_pow_block_at_total_difficulty(transition_store.terminal_total_difficulty, pow_chain)
if terminal_pow_block is None:
# Pre-merge, empty payload
return ExecutionPayload()