Current File : //proc/self/root/usr/share/virt-manager/virtManager/packageutils.py
#
# Copyright (C) 2012-2013 Red Hat, Inc.
# Copyright (C) 2012 Cole Robinson <crobinso@redhat.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 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301 USA.
#
import logging
import time
from gi.repository import Gio
#############################
# PackageKit lookup helpers #
#############################
def check_packagekit(parent, errbox, packages):
"""
Returns None when we determine nothing useful.
Returns (success, did we just install libvirt) otherwise.
"""
ignore = errbox
if not packages:
logging.debug("No PackageKit packages to search for.")
return
if not isinstance(packages, list):
packages = [packages]
logging.debug("PackageKit check/install for packages=%s", packages)
try:
bus = Gio.bus_get_sync(Gio.BusType.SYSTEM, None)
Gio.DBusProxy.new_sync(bus, 0, None,
"org.freedesktop.PackageKit",
"/org/freedesktop/PackageKit",
"org.freedesktop.PackageKit", None)
except Exception:
logging.exception("Couldn't connect to packagekit")
return
try:
for package in packages[:]:
if packagekit_isinstalled(package):
logging.debug("package=%s already installed, skipping it",
package)
packages.remove(package)
if packages:
packagekit_install(parent, packages)
else:
logging.debug("Nothing to install")
except Exception as e:
# PackageKit frontend should report an error for us, so just log
# the actual error
logging.debug("Error talking to PackageKit: %s", str(e), exc_info=True)
return
return True
def packagekit_isinstalled(package):
bus = Gio.bus_get_sync(Gio.BusType.SESSION, None)
pk_control = Gio.DBusProxy.new_sync(bus, 0, None,
"org.freedesktop.PackageKit",
"/org/freedesktop/PackageKit",
"org.freedesktop.PackageKit.Query", None)
return pk_control.IsInstalled("(ss)", package, "")
def packagekit_install(parent, package_list):
ignore = parent
bus = Gio.bus_get_sync(Gio.BusType.SESSION, None)
pk_control = Gio.DBusProxy.new_sync(bus, 0, None,
"org.freedesktop.PackageKit",
"/org/freedesktop/PackageKit",
"org.freedesktop.PackageKit.Modify", None)
# Set 2 hour timeout
timeout = 1000 * 60 * 60 * 2
logging.debug("Installing packages: %s", package_list)
pk_control.InstallPackageNames("(uass)", 0, package_list, "",
timeout=timeout)
logging.debug("Install completed")
###################
# Service helpers #
###################
def start_libvirtd():
"""
Connect to systemd and start libvirtd if required
"""
logging.debug("Trying to start libvirtd through systemd")
unitname = "libvirtd.service"
try:
bus = Gio.bus_get_sync(Gio.BusType.SYSTEM, None)
except Exception:
logging.exception("Error getting system bus handle")
return
try:
systemd = Gio.DBusProxy.new_sync(bus, 0, None,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager", None)
except Exception:
logging.exception("Couldn't connect to systemd")
return
try:
unitpath = systemd.GetUnit("(s)", unitname)
unit = Gio.DBusProxy.new_sync(bus, 0, None,
"org.freedesktop.systemd1", unitpath,
"org.freedesktop.systemd1.Unit", None)
state = unit.get_cached_property("ActiveState")
logging.debug("libvirtd state=%s", state)
if str(state).lower().strip("'") == "active":
logging.debug("libvirtd already active, not starting")
return True
except Exception:
logging.exception("Failed to lookup libvirtd status")
return
# Connect to system-config-services and offer to start
try:
logging.debug("libvirtd not running, asking system-config-services "
"to start it")
scs = Gio.DBusProxy.new_sync(bus, 0, None,
"org.fedoraproject.Config.Services",
"/org/fedoraproject/Config/Services/systemd1",
"org.freedesktop.systemd1.Manager", None)
scs.StartUnit("(ss)", unitname, "replace")
time.sleep(2)
logging.debug("Starting libvirtd appeared to succeed")
return True
except Exception:
logging.exception("Failed to talk to system-config-services")
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