def create_data_path(
self,
path: str,
parent: Optional[DNode] = None,
value: Any = None,
update: bool = True,
no_parent_ret: bool = True,
rpc_output: bool = False,
force_return_value: bool = True,
) -> Optional[DNode]:
if self.cdata is None:
raise RuntimeError("context already destroyed")
lib.lypy_set_errno(0)
if value is not None:
if isinstance(value, bool):
value = str(value).lower()
elif not isinstance(value, str):
value = str(value)
flags = path_flags(update=update,
no_parent_ret=no_parent_ret,
rpc_output=rpc_output)
dnode = lib.lyd_new_path(
parent.cdata if parent else ffi.NULL,
self.cdata,
str2c(path),
str2c(value),
0,
flags,
)
if lib.lypy_get_errno() != lib.LY_SUCCESS:
if lib.ly_vecode(self.cdata) != lib.LYVE_PATH_EXISTS:
raise self.error("cannot create data path: %s", path)
lib.ly_err_clean(self.cdata, ffi.NULL)
lib.lypy_set_errno(0)
if not dnode and not force_return_value:
return None
if not dnode and parent:
# This can happen when path points to an already created leaf and
# its value does not change.
# In that case, lookup the existing leaf and return it.
node_set = lib.lyd_find_path(parent.cdata, str2c(path))
try:
if not node_set or not node_set.number:
raise self.error("cannot find path: %s", path)
dnode = node_set.set.s[0]
finally:
lib.ly_set_free(node_set)
if not dnode:
raise self.error("cannot find created path")
return DNode.new(self, dnode)
def error(self, msg, *args):
msg %= args
if self._ctx:
err = lib.ly_err_first(self._ctx)
if err:
if err.msg:
msg += ': %s' % c2str(err.msg)
if err.path:
msg += ': %s' % c2str(err.path)
lib.ly_err_clean(self._ctx, ffi.NULL)
return LibyangError(msg)
def error(self, msg: str, *args) -> LibyangError:
msg %= args
if self.cdata:
err = lib.ly_err_first(self.cdata)
while err:
if err.msg:
msg += ": %s" % c2str(err.msg)
if err.path:
msg += ": %s" % c2str(err.path)
err = err.next
lib.ly_err_clean(self.cdata, ffi.NULL)
return LibyangError(msg)
def error(self, msg, *args):
errors = []
try:
err = lib.ly_err_first(self._ctx)
while err:
e = []
if err.path:
e.append(c2str(err.path))
if err.msg:
e.append(c2str(err.msg))
if err.apptag:
e.append(c2str(err.apptag))
if e:
errors.append(': '.join(e))
err = err.next
finally:
lib.ly_err_clean(self._ctx, ffi.NULL)
msg %= args
if errors:
msg += ': ' + ' '.join(errors)
return LibyangError(msg)