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Misc fixes of `get_next_epoch_crosslink_committees`

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Hsiao-Wei Wang 2019-02-02 02:06:53 +08:00
parent 4cdb66728a
commit 378e1ba9a6
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2 changed files with 13 additions and 5 deletions
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2
specs/core/0_beacon-chain.md
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@ -833,7 +833,7 @@ def get_next_epoch_committee_count(state: BeaconState) -> int:
```python ```python
def get_crosslink_committees_at_slot(state: BeaconState, def get_crosslink_committees_at_slot(state: BeaconState,
slot: SlotNumber, slot: SlotNumber,
registry_change=False: bool) -> List[Tuple[List[ValidatorIndex], ShardNumber]]: registry_change: bool=False) -> List[Tuple[List[ValidatorIndex], ShardNumber]]:
""" """
Return the list of ``(committee, shard)`` tuples for the ``slot``. Return the list of ``(committee, shard)`` tuples for the ``slot``.

16
specs/validator/0_beacon-chain-validator.md
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@ -345,15 +345,23 @@ Either (2) or (3) occurs if (1) fails. The choice between (2) and (3) is determi
```python ```python
def get_next_epoch_crosslink_committees(state: BeaconState, def get_next_epoch_crosslink_committees(state: BeaconState,
validator_index: ValidatorIndex) -> List[Tuple[ValidatorIndex], ShardNumber]: validator_index: ValidatorIndex) -> List[Tuple[List[ValidatorIndex], ShardNumber]]:
current_epoch = get_current_epoch(state) current_epoch = get_current_epoch(state)
next_epoch = current_epoch + 1 next_epoch = current_epoch + 1
next_epoch_start_slot = get_epoch_start_slot(next_epoch) next_epoch_start_slot = get_epoch_start_slot(next_epoch)
potential_committees = [] potential_committees = []
for validator_registry in [False, True]: for registry_change in [False, True]:
for slot in range(next_epoch_start_slot, next_epoch_start_slot + EPOCH_LENGTH): for slot in range(next_epoch_start_slot, next_epoch_start_slot + EPOCH_LENGTH):
shard_committees = get_crosslink_committees_at_slot(state, slot, validator_registry) crosslink_committees = get_crosslink_committees_at_slot(
selected_committees = [committee for committee in shard_committees if validator_index in committee[0]] state,
slot,
registry_change=registry_change,
)
selected_committees = [
committee # type: Tuple[List[ValidatorIndex], ShardNumber]
for committee in crosslink_committees
if validator_index in committee[0]
]
if len(selected_committees) > 0: if len(selected_committees) > 0:
potential_assignments.append(selected_committees) potential_assignments.append(selected_committees)
break break