76 lines
2.6 KiB
Python
76 lines
2.6 KiB
Python
#
|
|
# Copyright (C) 2019 Red Hat, Inc. All rights reserved.
|
|
#
|
|
# 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 2 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 <http://www.gnu.org/licenses/>.
|
|
#
|
|
from dasbus.namespace import get_namespace_from_name, get_dbus_path, get_dbus_name
|
|
from dasbus.client.observer import DBusObserver, DBusObserverError
|
|
|
|
from pyanaconda.anaconda_loggers import get_module_logger
|
|
from pyanaconda.modules.common.constants.namespaces import ADDONS_NAMESPACE
|
|
|
|
log = get_module_logger(__name__)
|
|
|
|
|
|
class ModuleObserver(DBusObserver):
|
|
"""Observer of an Anaconda module."""
|
|
|
|
def __init__(self, message_bus, service_name):
|
|
"""Creates a module observer.
|
|
|
|
:param message_bus: a message bus
|
|
:param service_name: a DBus name of a service
|
|
"""
|
|
super().__init__(message_bus, service_name)
|
|
self._proxy = None
|
|
self._is_addon = service_name.startswith(get_dbus_name(*ADDONS_NAMESPACE))
|
|
self._namespace = get_namespace_from_name(service_name)
|
|
self._object_path = get_dbus_path(*self._namespace)
|
|
|
|
@property
|
|
def is_addon(self):
|
|
"""Is the observed module an addon?
|
|
|
|
:return: True or False
|
|
"""
|
|
return self._is_addon
|
|
|
|
@property
|
|
def proxy(self):
|
|
"""Returns a proxy of the remote object."""
|
|
if not self._is_service_available:
|
|
raise DBusObserverError("Service {} is not available."
|
|
.format(self._service_name))
|
|
|
|
if not self._proxy:
|
|
self._proxy = self._message_bus.get_proxy(self._service_name,
|
|
self._object_path)
|
|
|
|
return self._proxy
|
|
|
|
def _enable_service(self):
|
|
"""Enable the service."""
|
|
self._proxy = None
|
|
super()._enable_service()
|
|
|
|
def _disable_service(self):
|
|
"""Disable the service"""
|
|
self._proxy = None
|
|
super()._disable_service()
|
|
|
|
def __repr__(self):
|
|
"""Returns a string representation."""
|
|
return "{}({},{})".format(self.__class__.__name__,
|
|
self._service_name,
|
|
self._object_path)
|