diff options
Diffstat (limited to 'python/vyos/configtree.py')
| -rw-r--r-- | python/vyos/configtree.py | 65 |
1 files changed, 52 insertions, 13 deletions
diff --git a/python/vyos/configtree.py b/python/vyos/configtree.py index d8ffaca99..866f24e47 100644 --- a/python/vyos/configtree.py +++ b/python/vyos/configtree.py @@ -15,8 +15,9 @@ import re import json -from ctypes import cdll, c_char_p, c_void_p, c_int +from ctypes import cdll, c_char_p, c_void_p, c_int, POINTER +LIBPATH = '/usr/lib/libvyosconfig.so.0' def escape_backslash(string: str) -> str: """Escape single backslashes in string that are not in escape sequence""" @@ -42,7 +43,9 @@ class ConfigTreeError(Exception): class ConfigTree(object): - def __init__(self, config_string, libpath='/usr/lib/libvyosconfig.so.0'): + def __init__(self, config_string=None, address=None, libpath=LIBPATH): + if config_string is None and address is None: + raise TypeError("ConfigTree() requires one of 'config_string' or 'address'") self.__config = None self.__lib = cdll.LoadLibrary(libpath) @@ -60,7 +63,7 @@ class ConfigTree(object): self.__to_string.restype = c_char_p self.__to_commands = self.__lib.to_commands - self.__to_commands.argtypes = [c_void_p] + self.__to_commands.argtypes = [c_void_p, c_char_p] self.__to_commands.restype = c_char_p self.__to_json = self.__lib.to_json @@ -126,15 +129,19 @@ class ConfigTree(object): self.__destroy = self.__lib.destroy self.__destroy.argtypes = [c_void_p] - config_section, version_section = extract_version(config_string) - config_section = escape_backslash(config_section) - config = self.__from_string(config_section.encode()) - if config is None: - msg = self.__get_error().decode() - raise ValueError("Failed to parse config: {0}".format(msg)) + if address is None: + config_section, version_section = extract_version(config_string) + config_section = escape_backslash(config_section) + config = self.__from_string(config_section.encode()) + if config is None: + msg = self.__get_error().decode() + raise ValueError("Failed to parse config: {0}".format(msg)) + else: + self.__config = config + self.__version = version_section else: - self.__config = config - self.__version = version_section + self.__config = address + self.__version = '' def __del__(self): if self.__config is not None: @@ -143,13 +150,16 @@ class ConfigTree(object): def __str__(self): return self.to_string() + def _get_config(self): + return self.__config + def to_string(self): config_string = self.__to_string(self.__config).decode() config_string = "{0}\n{1}".format(config_string, self.__version) return config_string - def to_commands(self): - return self.__to_commands(self.__config).decode() + def to_commands(self, op="set"): + return self.__to_commands(self.__config, op.encode()).decode() def to_json(self): return self.__to_json(self.__config).decode() @@ -281,3 +291,32 @@ class ConfigTree(object): else: raise ConfigTreeError("Path [{}] doesn't exist".format(path_str)) +class Diff: + def __init__(self, left, right, path=[], libpath=LIBPATH): + if not (isinstance(left, ConfigTree) and isinstance(right, ConfigTree)): + raise TypeError("Arguments must be instances of ConfigTree") + if path: + if not left.exists(path): + raise ConfigTreeError(f"Path {path} doesn't exist in lhs tree") + if not right.exists(path): + raise ConfigTreeError(f"Path {path} doesn't exist in rhs tree") + self.left = left + self.right = right + + check_path(path) + path_str = " ".join(map(str, path)).encode() + df = cdll.LoadLibrary(libpath).diffs + df.restype = POINTER(c_void_p * 3) + res = list(df(path_str, left._get_config(), right._get_config()).contents) + self._diff = {'add': ConfigTree(address=res[0]), + 'del': ConfigTree(address=res[1]), + 'int': ConfigTree(address=res[2]) } + + self.add = self._diff['add'] + self.delete = self._diff['del'] + self.inter = self._diff['int'] + + def to_commands(self): + add = self.add.to_commands() + delete = self.delete.to_commands(op="delete") + return delete + "\n" + add |