Viewing file:  state.py (4.95 KB) -rw-r--r--
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# Copyright (C) 2023 Canonical, Ltd.
# Author: Lukas Märdian <slyon@ubuntu.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 3.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# from enum import IntEnum
from io import StringIO
import os
from typing import IO
from ._netplan_cffi import ffi, lib
from .netdef import NetDefinition, NetDefinitionIterator
from .parser import Parser
from ._utils import _checked_lib_call
# class NETPLAN_STORAGE(IntEnum):
# ETC = 0
# RUN = 1
# LIB = 2
class State():
def __init__(self):
self._ptr = lib.netplan_state_new()
def __del__(self):
ref = ffi.new('NetplanState **', self._ptr)
lib.netplan_state_clear(ref)
def __getitem__(self, netdef_id: str):
ptr = lib.netplan_state_get_netdef(self._ptr, netdef_id.encode('utf-8'))
if not ptr:
raise IndexError()
return NetDefinition(self, ptr)
def __len__(self):
return lib.netplan_state_get_netdefs_size(self._ptr)
def import_parser_results(self, parser: Parser):
_checked_lib_call(lib.netplan_state_import_parser_results, self._ptr, parser._ptr)
# def write_yaml(filter: str, default_filename: str = None,
# storage: NETPLAN_STORAGE = NETPLAN_STORAGE.ETC, rootdir str = None):
# # TODO: https://bugs.launchpad.net/netplan/+bug/2003727
# raise NotImplementedError
def _write_yaml_file(self, filename: str = None, rootdir: str = None):
name = filename.encode('utf-8') if filename else ffi.NULL
root = rootdir.encode('utf-8') if rootdir else ffi.NULL
_checked_lib_call(lib.netplan_state_write_yaml_file, self._ptr, name, root)
def _update_yaml_hierarchy(self, default_filename: str, rootdir: str = None):
name = default_filename.encode('utf-8')
root = rootdir.encode('utf-8') if rootdir else ffi.NULL
_checked_lib_call(lib.netplan_state_update_yaml_hierarchy, self._ptr, name, root)
def _dump_yaml(self, output_file: IO):
if isinstance(output_file, StringIO):
fd = os.memfd_create(name='netplan_temp_file')
_checked_lib_call(lib.netplan_state_dump_yaml, self._ptr, fd)
size = os.lseek(fd, 0, os.SEEK_CUR)
os.lseek(fd, 0, os.SEEK_SET)
data = os.read(fd, size)
os.close(fd)
output_file.write(data.decode('utf-8'))
else:
fd = output_file.fileno()
_checked_lib_call(lib.netplan_state_dump_yaml, self._ptr, fd)
@property
def backend(self) -> str:
return ffi.string(lib.netplan_backend_name(lib.netplan_state_get_backend(self._ptr))).decode('utf-8')
@property
def netdefs(self) -> NetDefinitionIterator:
return dict((nd.id, nd) for nd in NetDefinitionIterator(self, None))
@property
def ethernets(self) -> NetDefinitionIterator:
return dict((nd.id, nd) for nd in NetDefinitionIterator(self, "ethernets"))
@property
def modems(self) -> NetDefinitionIterator:
return dict((nd.id, nd) for nd in NetDefinitionIterator(self, "modems"))
@property
def wifis(self) -> NetDefinitionIterator:
return dict((nd.id, nd) for nd in NetDefinitionIterator(self, "wifis"))
@property
def vlans(self) -> NetDefinitionIterator:
return dict((nd.id, nd) for nd in NetDefinitionIterator(self, "vlans"))
@property
def bridges(self) -> NetDefinitionIterator:
return dict((nd.id, nd) for nd in NetDefinitionIterator(self, "bridges"))
@property
def bonds(self) -> NetDefinitionIterator:
return dict((nd.id, nd) for nd in NetDefinitionIterator(self, "bonds"))
@property
def dummy_devices(self) -> NetDefinitionIterator:
return dict((nd.id, nd) for nd in NetDefinitionIterator(self, "dummy-devices"))
@property
def tunnels(self) -> NetDefinitionIterator:
return dict((nd.id, nd) for nd in NetDefinitionIterator(self, "tunnels"))
@property
def virtual_ethernets(self) -> NetDefinitionIterator:
return dict((nd.id, nd) for nd in NetDefinitionIterator(self, "virtual-ethernets"))
@property
def vrfs(self) -> NetDefinitionIterator:
return dict((nd.id, nd) for nd in NetDefinitionIterator(self, "vrfs"))
@property
def ovs_ports(self) -> NetDefinitionIterator:
return dict((nd.id, nd) for nd in NetDefinitionIterator(self, "_ovs-ports"))
@property
def nm_devices(self) -> NetDefinitionIterator:
return dict((nd.id, nd) for nd in NetDefinitionIterator(self, "nm-devices"))
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