def _persist_canonical_epoch_info(db: DatabaseAPI, state: BeaconState) -> None:
epoch_info = EpochInfo(
previous_justified_checkpoint=state.previous_justified_checkpoint,
current_justified_checkpoint=state.current_justified_checkpoint,
finalized_checkpoint=state.finalized_checkpoint,
)
db.set(SchemaV1.make_canonical_epoch_info_lookup_key(), ssz.encode(epoch_info))
def _get_canonical_epoch_info(db: DatabaseAPI) -> EpochInfo:
key = SchemaV1.make_canonical_epoch_info_lookup_key()
try:
epoch_info = db[key]
except KeyError:
raise EpochInfoNotFound("Canonical EpochInfo not found")
else:
return ssz.decode(epoch_info, EpochInfo)
