One-KVM/kvmd/apps/kvmd/info.py
2019-06-06 04:04:13 +03:00

87 lines
4.0 KiB
Python

# ========================================================================== #
# #
# KVMD - The main Pi-KVM daemon. #
# #
# Copyright (C) 2018 Maxim Devaev <mdevaev@gmail.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, either version 3 of the License, or #
# (at your option) any later version. #
# #
# 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 <https://www.gnu.org/licenses/>. #
# #
# ========================================================================== #
import os
import contextlib
from typing import Dict
import dbus # pylint: disable=import-error
import dbus.exceptions
from ...logging import get_logger
from ...yamlconf.loader import load_yaml_file
from ... import aiotools
# =====
class InfoManager:
def __init__(
self,
meta_path: str,
extras_path: str,
) -> None:
self.__meta_path = meta_path
self.__extras_path = extras_path
async def get_meta(self) -> Dict:
return (await aiotools.run_async(load_yaml_file, self.__meta_path))
async def get_extras(self) -> Dict:
return (await aiotools.run_async(self.__inner_get_extras))
def __inner_get_extras(self) -> Dict:
extras: Dict[str, Dict] = {}
for app in os.listdir(self.__extras_path):
if app[0] != "." and os.path.isdir(os.path.join(self.__extras_path, app)):
extras[app] = load_yaml_file(os.path.join(self.__extras_path, app, "manifest.yaml"))
daemon = extras[app].get("daemon", "")
if isinstance(daemon, str) and daemon.strip():
extras[app]["enabled"] = self.__is_daemon_enabled(daemon)
return extras
def __is_daemon_enabled(self, name: str) -> bool:
if not name.startswith(".service"):
name += ".service"
try:
with contextlib.closing(dbus.SystemBus()) as bus:
systemd = bus.get_object("org.freedesktop.systemd1", "/org/freedesktop/systemd1") # pylint: disable=no-member
manager = dbus.Interface(systemd, dbus_interface="org.freedesktop.systemd1.Manager")
try:
unit_proxy = bus.get_object("org.freedesktop.systemd1", manager.GetUnit(name)) # pylint: disable=no-member
unit_properties = dbus.Interface(unit_proxy, dbus_interface="org.freedesktop.DBus.Properties")
enabled = (unit_properties.Get("org.freedesktop.systemd1.Unit", "ActiveState") == "active")
except dbus.exceptions.DBusException as err:
if "NoSuchUnit" not in str(err):
raise
enabled = False
return (enabled or (manager.GetUnitFileState(name) in ["enabled", "enabled-runtime", "static", "indirect", "generated"]))
except Exception as err:
get_logger(0).error("Can't get info about the service %r: %s: %s", name, type(err).__name__, str(err))
return True