def set(self, key: bytes, value: bytes):
self._trie.update(key, rlp_encode([value]))
def verify_state_proof(root, key, value, proof_nodes, serialized=False):
return Trie.verify_spv_proof(root, key, rlp_encode([value]),
proof_nodes, serialized)
def encode_kv_for_verification(key, value):
encoded_key = key.encode() if isinstance(key, str) else key
encoded_value = rlp_encode([value]) if value is not None else b''
return encoded_key, encoded_value
def set(self, key: bytes, value: bytes):
self._trie.update(key, rlp_encode([value]))
def encode_kv_for_verification(key, value):
encoded_key = key.encode() if isinstance(key, str) else key
encoded_value = rlp_encode([value]) if value is not None else b''
return encoded_key, encoded_value
def verify_state_proof(root, key, value, proof_nodes, serialized=False):
encoded_value = rlp_encode([value]) if value is not None else b''
return Trie.verify_spv_proof(root, key, encoded_value, proof_nodes,
serialized)
def test_get_values_at_roots_in_memory():
# Update key with different values but preserve root after each update
# Check values of keys with different previous roots and check that they
# are correct
trie = Trie(PersistentDB(KeyValueStorageInMemory()))
trie.update('k1'.encode(), rlp_encode(['v1']))
# print state.root_hash.encode('hex')
# print state.root_node
val = trie.get('k1')
print(rlp_decode(val))
oldroot1 = trie.root_node
old_root1_hash = trie.root_hash
assert trie._decode_to_node(old_root1_hash) == oldroot1
trie.update('k1'.encode(), rlp_encode(['v1a']))
val = trie.get('k1')
assert rlp_decode(val) == [b'v1a', ]
# Already saved roots help in getting previous values
oldval = trie.get_at(oldroot1, 'k1')
assert rlp_decode(oldval) == [b'v1', ]
oldroot1a = trie.root_node
trie.update('k1'.encode(), rlp_encode([b'v1b']))
val = trie.get('k1')
assert rlp_decode(val) == [b'v1b']
oldval = trie.get_at(oldroot1a, 'k1')
assert rlp_decode(oldval) == [b'v1a', ]
oldval = trie.get_at(oldroot1, 'k1')
assert rlp_decode(oldval) == [b'v1', ]
oldroot1b = trie.root_node
trie.update('k1'.encode(), rlp_encode([b'v1c']))
val = trie.get('k1')
assert rlp_decode(val) == [b'v1c', ]
oldval = trie.get_at(oldroot1b, 'k1')
assert rlp_decode(oldval) == [b'v1b', ]
oldval = trie.get_at(oldroot1a, 'k1')
assert rlp_decode(oldval) == [b'v1a', ]
oldval = trie.get_at(oldroot1, 'k1')
assert rlp_decode(oldval) == [b'v1', ]
oldroot1c = trie.root_node
trie.delete('k1'.encode())
assert trie.get('k1') == BLANK_NODE
oldval = trie.get_at(oldroot1c, 'k1')
assert rlp_decode(oldval) == [b'v1c', ]
oldval = trie.get_at(oldroot1b, 'k1')
assert rlp_decode(oldval) == [b'v1b', ]
oldval = trie.get_at(oldroot1a, 'k1')
assert rlp_decode(oldval) == [b'v1a', ]
oldval = trie.get_at(oldroot1, 'k1')
assert rlp_decode(oldval) == [b'v1', ]
trie.root_node = oldroot1c
val = trie.get('k1')
assert rlp_decode(val) == [b'v1c', ]
trie.root_node = oldroot1
val = trie.get('k1')
assert rlp_decode(val) == [b'v1', ]
def verify_state_proof_multi(root, key_values, proof_nodes, serialized=False):
encoded_key_values = {k: rlp_encode([v]) if v is not None else b'' for k, v in key_values.items()}
return Trie.verify_spv_proof_multi(root, encoded_key_values, proof_nodes, serialized)