def __next__(self):
if not self._c_iter_ptr:
raise StopIteration()
(c_address, c_address_len) = ffi.prepare_byte_result()
(c_value, c_value_len) = ffi.prepare_byte_result()
_libexec('merkle_db_leaf_iterator_next', self._c_iter_ptr,
ctypes.byref(c_address), ctypes.byref(c_address_len),
ctypes.byref(c_value), ctypes.byref(c_value_len))
address = ffi.from_c_bytes(c_address, c_address_len).decode()
value = _decode(ffi.from_c_bytes(c_value, c_value_len))
return (address, value)
def update(self, set_items, delete_items=None, virtual=True):
"""
Args:
set_items (dict): dict key, values where keys are addresses
delete_items (list): list of addresses
virtual (boolean): True if not committing to disk. I.e.,
speculative root hash
Returns:
the state root after the operations
"""
c_set_items = (ctypes.POINTER(_Entry) * len(set_items))()
for (i, (key, value)) in enumerate(set_items.items()):
c_set_items[i] = ctypes.pointer(_Entry.new(key, _encode(value)))
if delete_items is None:
delete_items = []
c_delete_items = (ctypes.c_char_p * len(delete_items))()
for (i, address) in enumerate(delete_items):
c_delete_items[i] = ctypes.c_char_p(address.encode())
(c_merkle_root, c_merkle_root_len) = ffi.prepare_byte_result()
_libexec('merkle_db_update', self.pointer, c_set_items,
ctypes.c_size_t(len(set_items)), c_delete_items,
ctypes.c_size_t(len(delete_items)), virtual,
ctypes.byref(c_merkle_root), ctypes.byref(c_merkle_root_len))
return ffi.from_c_bytes(c_merkle_root, c_merkle_root_len).decode()
def get_merkle_root(self):
(c_merkle_root, c_merkle_root_len) = ffi.prepare_byte_result()
_libexec('merkle_db_get_merkle_root', self.pointer,
ctypes.byref(c_merkle_root), ctypes.byref(c_merkle_root_len))
return ffi.from_c_bytes(
c_merkle_root, c_merkle_root_len).decode()
def delete(self, address):
c_address = ctypes.c_char_p(address.encode())
(c_merkle_root, c_merkle_root_len) = ffi.prepare_byte_result()
_libexec('merkle_db_delete', self.pointer, c_address,
ctypes.byref(c_merkle_root), ctypes.byref(c_merkle_root_len))
return ffi.from_c_bytes(c_merkle_root, c_merkle_root_len).decode()
def finalize_block(self, consensus=None, force=False):
(c_result, c_result_len) = ffi.prepare_byte_result()
self._call('finalize_block', consensus, len(consensus),
ctypes.c_bool(force), ctypes.byref(c_result),
ctypes.byref(c_result_len))
return ffi.from_c_bytes(c_result, c_result_len).decode('utf-8')
def get_merkle_root(self):
(c_merkle_root, c_merkle_root_len) = ffi.prepare_byte_result()
_libexec('merkle_db_get_merkle_root', self.pointer,
ctypes.byref(c_merkle_root), ctypes.byref(c_merkle_root_len))
return ffi.from_c_bytes(
c_merkle_root, c_merkle_root_len).decode()
def update(self, set_items, delete_items=None, virtual=True):
"""
Args:
set_items (dict): dict key, values where keys are addresses
delete_items (list): list of addresses
virtual (boolean): True if not committing to disk. I.e.,
speculative root hash
Returns:
the state root after the operations
"""
c_set_items = (ctypes.POINTER(_Entry) * len(set_items))()
for (i, (key, value)) in enumerate(set_items.items()):
c_set_items[i] = ctypes.pointer(_Entry.new(key, _encode(value)))
if delete_items is None:
delete_items = []
c_delete_items = (ctypes.c_char_p * len(delete_items))()
for (i, address) in enumerate(delete_items):
c_delete_items[i] = ctypes.c_char_p(address.encode())
(c_merkle_root, c_merkle_root_len) = ffi.prepare_byte_result()
_libexec('merkle_db_update', self.pointer,
c_set_items, ctypes.c_size_t(len(set_items)),
c_delete_items, ctypes.c_size_t(len(delete_items)),
virtual,
ctypes.byref(c_merkle_root),
ctypes.byref(c_merkle_root_len))
return ffi.from_c_bytes(
c_merkle_root, c_merkle_root_len).decode()
def get(self, address):
c_address = ctypes.c_char_p(address.encode())
(c_data, c_data_len) = ffi.prepare_byte_result()
_libexec('merkle_db_get', self.pointer, c_address,
ctypes.byref(c_data), ctypes.byref(c_data_len))
return _decode(ffi.from_c_bytes(c_data, c_data_len))
def get(self, address):
c_address = ctypes.c_char_p(address.encode())
(c_data, c_data_len) = ffi.prepare_byte_result()
_libexec('merkle_db_get', self.pointer, c_address,
ctypes.byref(c_data), ctypes.byref(c_data_len))
return _decode(ffi.from_c_bytes(c_data, c_data_len))
def __next__(self):
if not self._c_iter_ptr:
raise StopIteration()
(c_address, c_address_len) = ffi.prepare_byte_result()
(c_value, c_value_len) = ffi.prepare_byte_result()
_libexec('merkle_db_leaf_iterator_next', self._c_iter_ptr,
ctypes.byref(c_address),
ctypes.byref(c_address_len),
ctypes.byref(c_value),
ctypes.byref(c_value_len))
address = ffi.from_c_bytes(c_address, c_address_len).decode()
value = _decode(ffi.from_c_bytes(c_value, c_value_len))
return (address, value)
def delete(self, address):
c_address = ctypes.c_char_p(address.encode())
(c_merkle_root, c_merkle_root_len) = ffi.prepare_byte_result()
_libexec('merkle_db_delete', self.pointer, c_address,
ctypes.byref(c_merkle_root),
ctypes.byref(c_merkle_root_len))
return ffi.from_c_bytes(
c_merkle_root, c_merkle_root_len).decode()
def set(self, address, value):
c_address = ctypes.c_char_p(address.encode())
(c_merkle_root, c_merkle_root_len) = ffi.prepare_byte_result()
data = _encode(value)
_libexec('merkle_db_set', self.pointer, c_address, data, len(data),
ctypes.byref(c_merkle_root), ctypes.byref(c_merkle_root_len))
return ffi.from_c_bytes(c_merkle_root, c_merkle_root_len).decode()
def set(self, address, value):
c_address = ctypes.c_char_p(address.encode())
(c_merkle_root, c_merkle_root_len) = ffi.prepare_byte_result()
data = _encode(value)
_libexec('merkle_db_set', self.pointer, c_address,
data, len(data),
ctypes.byref(c_merkle_root),
ctypes.byref(c_merkle_root_len))
return ffi.from_c_bytes(
c_merkle_root, c_merkle_root_len).decode()
def summarize_block(self, force=False):
(c_result, c_result_len) = ffi.prepare_byte_result()
self._call('summarize_block', ctypes.c_bool(force),
ctypes.byref(c_result), ctypes.byref(c_result_len))
return ffi.from_c_bytes(c_result, c_result_len)
