def _get_canonical_block_hash(db: BaseDB, slot: int) -> Hash32: validate_slot(slot) slot_to_hash_key = SchemaV1.make_block_slot_to_hash_lookup_key(slot) try: encoded_key = db[slot_to_hash_key] except KeyError: raise BlockNotFound( "No canonical block for block slot #{0}".format(slot)) else: return rlp.decode(encoded_key, sedes=rlp.sedes.binary)
def _add_block_slot_to_hash_lookup(db: BaseDB, block: BaseBeaconBlock) -> None: """ Set a record in the database to allow looking up this block by its block slot. """ block_slot_to_hash_key = SchemaV1.make_block_slot_to_hash_lookup_key( block.slot_number) db.set( block_slot_to_hash_key, rlp.encode(block.hash, sedes=rlp.sedes.binary), )
def test_chaindb_add_block_number_to_hash_lookup(chaindb, block): block_slot_to_hash_key = SchemaV1.make_block_slot_to_hash_lookup_key( block.slot) assert not chaindb.exists(block_slot_to_hash_key) chaindb.persist_block(block) assert chaindb.exists(block_slot_to_hash_key)