def _get_slot_by_root(db: DatabaseAPI, block_root: Hash32) -> Slot:
validate_word(block_root, title="block root")
try:
encoded_slot = db[SchemaV1.make_block_root_to_slot_lookup_key(
block_root)]
except KeyError:
raise BlockNotFound("No block with root {0} found".format(
encode_hex(block_root)))
return Slot(ssz.decode(encoded_slot, sedes=ssz.sedes.uint64))
def _add_block_root_to_slot_lookup(db: DatabaseAPI, block: BaseBeaconBlock) -> None:
"""
Set a record in the database to allow looking up the slot number by its
block root.
"""
block_root_to_slot_key = SchemaV1.make_block_root_to_slot_lookup_key(
block.message.hash_tree_root
)
db.set(block_root_to_slot_key, ssz.encode(block.slot, sedes=ssz.sedes.uint64))
def _get_slot_by_root(db: BaseDB,
block_root: Hash32) -> SlotNumber:
validate_word(block_root, title="block root")
try:
encoded_slot = db[SchemaV1.make_block_root_to_slot_lookup_key(block_root)]
except KeyError:
raise BlockNotFound("No block with root {0} found".format(
encode_hex(block_root)))
return SlotNumber(rlp.decode(encoded_slot, sedes=rlp.sedes.big_endian_int))
def _add_block_root_to_slot_lookup(db: BaseDB, block: BaseBeaconBlock) -> None:
"""
Set a record in the database to allow looking up the slot number by its
block root.
"""
block_root_to_slot_key = SchemaV1.make_block_root_to_slot_lookup_key(
block.root
)
db.set(
block_root_to_slot_key,
rlp.encode(block.slot, sedes=rlp.sedes.big_endian_int),
)
