def get_block_by_hash(self, block_hash: Hash32) -> BaseBlock:
"""
Returns the requested block as specified by block hash.
"""
validate_word(block_hash, title="Block Hash")
block_header = self.get_block_header_by_hash(block_hash)
return self.get_block_by_header(block_header)
def get_block_header_by_hash(self, block_hash: Hash32) -> BlockHeader:
"""
Returns the requested block header as specified by block hash.
Raises BlockNotFound if there's no block header with the given hash in the db.
"""
validate_word(block_hash, title="Block Hash")
return self.chaindb.get_block_header_by_hash(block_hash)
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 _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 get_block_by_root(self, block_root: SigningRoot) -> BaseBeaconBlock:
"""
Return the requested block as specified by block hash.
Raise ``BlockNotFound`` if there's no block with the given hash in the db.
"""
validate_word(block_root, title="Block Signing Root")
block_class = self.get_block_class(block_root)
return self.chaindb.get_block_by_root(block_root, block_class)
def get_block_uncles(self, uncles_hash: Hash32) -> Tuple[BlockHeaderAPI, ...]:
validate_word(uncles_hash, title="Uncles Hash")
if uncles_hash == EMPTY_UNCLE_HASH:
return ()
try:
encoded_uncles = self.db[uncles_hash]
except KeyError as exc:
raise HeaderNotFound(
f"No uncles found for hash {uncles_hash!r}"
) from exc
else:
return tuple(rlp.decode(encoded_uncles, sedes=rlp.sedes.CountableList(BlockHeader)))
def _get_block_signing_root_by_hash_tree_root(
db: DatabaseAPI, block_root: HashTreeRoot) -> SigningRoot:
validate_word(block_root, title="block hash tree root")
key = SchemaV1.make_block_hash_tree_root_to_signing_root_lookup_key(
block_root)
try:
signing_root = db[key]
except KeyError:
raise BlockNotFound(
"No block with hash tree root {0} found".format(
encode_hex(block_root)))
return cast(SigningRoot, signing_root)
def _get_block_header_by_hash(db: DatabaseAPI, block_hash: Hash32) -> BlockHeaderAPI:
"""
Returns the requested block header as specified by block hash.
Raises BlockNotFound if it is not present in the db.
"""
validate_word(block_hash, title="Block Hash")
try:
header_rlp = db[block_hash]
except KeyError:
raise HeaderNotFound(f"No header with hash {encode_hex(block_hash)} found")
return _decode_block_header(header_rlp)
def get_block_header_by_hash(self, block_hash: Hash32) -> BlockHeader:
"""
Returns the requested block header as specified by block hash.
Raises BlockNotFound if it is not present in the db.
"""
validate_word(block_hash, title="Block Hash")
try:
header_rlp = self.db[block_hash]
except KeyError:
raise HeaderNotFound("No header with hash {0} found".format(
encode_hex(block_hash)))
return _decode_block_header(header_rlp)
def _get_block_by_hash(db: BaseDB, block_hash: Hash32) -> BaseBeaconBlock:
"""
Return the requested block header as specified by block hash.
Raise BlockNotFound if it is not present in the db.
"""
validate_word(block_hash, title="Block Hash")
try:
block_rlp = db[block_hash]
except KeyError:
raise BlockNotFound("No block with hash {0} found".format(
encode_hex(block_hash)))
return _decode_block(block_rlp)
def _get_block_by_root(
db: DatabaseAPI, block_root: Hash32,
block_class: Type[BaseBeaconBlock]) -> BaseBeaconBlock:
"""
Return the requested block header as specified by block root.
Raise BlockNotFound if it is not present in the db.
"""
validate_word(block_root, title="block root")
try:
block_ssz = db[block_root]
except KeyError:
raise BlockNotFound("No block with root {0} found".format(
encode_hex(block_root)))
return _decode_block(block_ssz, block_class)
def get_block_uncles(self, uncles_hash: Hash32) -> List[BlockHeader]:
"""
Returns an iterable of uncle headers specified by the given uncles_hash
"""
validate_word(uncles_hash, title="Uncles Hash")
if uncles_hash == EMPTY_UNCLE_HASH:
return []
try:
encoded_uncles = self.db[uncles_hash]
except KeyError:
raise HeaderNotFound(
"No uncles found for hash {0}".format(uncles_hash))
else:
return rlp.decode(encoded_uncles,
sedes=rlp.sedes.CountableList(BlockHeader))
def _get_block_by_root(
db: DatabaseAPI, block_root: Root,
block_class: Type[BaseSignedBeaconBlock]) -> BaseBeaconBlock:
"""
Return the requested block header as specified by block root.
Raise BlockNotFound if it is not present in the db.
"""
validate_word(block_root, title="block root")
if block_root in block_cache and block_root in db:
return block_cache[block_root]
try:
block_ssz = db[block_root]
except KeyError:
raise BlockNotFound("No block with root {0} found".format(
encode_hex(block_root)))
block = ssz.decode(block_ssz, block_class)
block_cache[block_root] = block
return block
def _header_exists(db: BaseDB, block_hash: Hash32) -> bool:
validate_word(block_hash, title="Block Hash")
return block_hash in db
def test_validate_word(value, is_valid):
if is_valid:
validate_word(value)
else:
with pytest.raises(ValidationError):
validate_word(value)
def _block_exists(db: DatabaseAPI, block_root: Hash32) -> bool:
validate_word(block_root, title="block root")
return block_root in db
def header_exists(self, block_hash: Hash32) -> bool:
validate_word(block_hash, title="Block Hash")
return block_hash in self.db
def get_block_by_root(root):
validate_word(root)
if root in mock_root_to_block_db:
return mock_root_to_block_db[root]
else:
raise BlockNotFound
def get_block_header_by_hash(self, block_hash: Hash32) -> BlockHeaderAPI:
validate_word(block_hash, title="Block Hash")
return self.chaindb.get_block_header_by_hash(block_hash)
def get_block_by_hash_tree_root(self, block_root: HashTreeRoot) -> BaseBeaconBlock:
validate_word(block_root, title="Block Hash Tree Root")
signing_root = self.chaindb.get_block_signing_root_by_hash_tree_root(block_root)
return self.get_block_by_root(signing_root)
def get_block_by_hash(self, block_hash: Hash32) -> BlockAPI:
validate_word(block_hash, title="Block Hash")
block_header = self.get_block_header_by_hash(block_hash)
return self.get_block_by_header(block_header)
