virt-manager/virt-manager
2019-06-17 00:12:32 -04:00

353 lines
12 KiB
Python
Executable File

#!/usr/bin/env python3
#
# Copyright (C) 2006, 2014 Red Hat, Inc.
# Copyright (C) 2006 Daniel P. Berrange <berrange@redhat.com>
#
# This work is licensed under the GNU GPLv2 or later.
# See the COPYING file in the top-level directory.
import argparse
import os
import signal
import sys
import traceback
import gi
gi.require_version('LibvirtGLib', '1.0')
from gi.repository import LibvirtGLib
from virtinst import BuildConfig
from virtinst import VirtinstConnection
from virtinst import cli
from virtinst import log
# This is massively heavy handed, but I can't figure out any way to shut
# up the slew of gtk deprecation warnings that clog up our very useful
# stdout --debug output. Of course we could drop use of deprecated APIs,
# but it's a serious quantity of churn
import warnings # pylint: disable=wrong-import-order
warnings.simplefilter("ignore")
try:
gi.check_version("3.22.0")
except (ValueError, AttributeError):
print("pygobject3 3.22.0 or later is required.")
sys.exit(1)
def _show_startup_error(msg, details):
log.debug("Error starting virt-manager: %s\n%s", msg, details,
exc_info=True)
from virtManager.error import vmmErrorDialog
err = vmmErrorDialog.get_instance()
title = _("Error starting Virtual Machine Manager")
err.show_err(title + ": " + msg,
details=details,
title=title,
modal=True,
debug=False)
def _import_gtk(leftovers):
# The never ending fork+gsettings problems now require us to
# import Gtk _after_ the fork. This creates a funny race, since we
# need to parse the command line arguments to know if we need to
# fork, but need to import Gtk before cli processing so it can
# handle --g-fatal-args. We strip out our flags first and pass the
# left overs to gtk
origargv = sys.argv
try:
sys.argv = origargv[:1] + leftovers[:]
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
leftovers = sys.argv[1:]
if Gtk.check_version(3, 22, 0):
print("gtk3 3.22.0 or later is required.")
sys.exit(1)
# This will error if Gtk wasn't correctly initialized
Gtk.init()
globals()["Gtk"] = Gtk
# This ensures we can init gsettings correctly
import virtManager.config
ignore = virtManager.config
except Exception as e:
# Don't just let the exception raise here. abrt reports bugs
# when users mess up su/sudo and DISPLAY isn't set. Printing
# it avoids the issue
display = os.environ.get("DISPLAY", "")
msg = str(e)
if display:
msg += ": Could not open display: %s" % display
log.debug("".join(traceback.format_exc()))
print(msg)
sys.exit(1)
finally:
sys.argv = origargv
return leftovers
def _setup_gsettings_path(schemadir):
"""
If running from the virt-manager.git srcdir, compile our gsettings
schema and use it directly
"""
import subprocess
import shutil
exe = shutil.which("glib-compile-schemas")
if not exe: # pragma: no cover
raise RuntimeError("You must install glib-compile-schemas to run "
"virt-manager from git.")
subprocess.check_call([exe, "--strict", schemadir])
def drop_tty():
# We fork and setsid so that we drop the controlling
# tty. This prevents libvirt's SSH tunnels from prompting
# for user input if SSH keys/agent aren't configured.
if os.fork() != 0:
os._exit(0) # pylint: disable=protected-access
os.setsid()
def drop_stdio():
# This is part of the fork process described in drop_tty()
for fd in range(0, 2):
try:
os.close(fd)
except OSError:
pass
os.open(os.devnull, os.O_RDWR)
os.dup2(0, 1)
os.dup2(0, 2)
def parse_commandline():
epilog = ("Also accepts standard GTK arguments like --g-fatal-warnings")
parser = argparse.ArgumentParser(usage="virt-manager [options]",
epilog=epilog)
parser.add_argument('--version', action='version',
version=BuildConfig.version)
parser.set_defaults(domain=None)
# Trace every libvirt API call to debug output
parser.add_argument("--trace-libvirt", choices=["all", "mainloop"],
help=argparse.SUPPRESS)
# Don't load any connections on startup to test first run
# PackageKit integration
parser.add_argument("--test-first-run",
help=argparse.SUPPRESS, action="store_true")
# Force use of old style libvirt polling APIs
parser.add_argument("--test-old-poll",
help=argparse.SUPPRESS, action="store_true")
# Force disable use of libvirt object events
parser.add_argument("--test-no-events",
help=argparse.SUPPRESS, action="store_true")
# Enabling this will tell us, at app exit time, which vmmGObjects were not
# garbage collected. This is caused by circular references to other objects,
# like a signal that wasn't disconnected. It's not a big deal, but if we
# have objects that can be created and destroyed a lot over the course of
# the app lifecycle, every non-garbage collected class is a memory leak.
# So it's nice to poke at this every now and then and try to track down
# what we need to add to class _cleanup handling.
parser.add_argument("--test-leak-debug",
help=argparse.SUPPRESS, action="store_true")
# comma separated string of options to tweak app behavior,
# for manual and automated testing config
parser.add_argument("--test-options", help=argparse.SUPPRESS)
parser.add_argument("-c", "--connect", dest="uri",
help="Connect to hypervisor at URI", metavar="URI")
parser.add_argument("--debug", action="store_true",
help="Print debug output to stdout (implies --no-fork)",
default=False)
parser.add_argument("--no-fork", action="store_true",
help="Don't fork into background on startup")
parser.add_argument("--show-domain-creator", action="store_true",
help="Show 'New VM' wizard")
parser.add_argument("--show-domain-editor", metavar="NAME|ID|UUID",
help="Show domain details window")
parser.add_argument("--show-domain-performance", metavar="NAME|ID|UUID",
help="Show domain performance window")
parser.add_argument("--show-domain-console", metavar="NAME|ID|UUID",
help="Show domain graphical console window")
parser.add_argument("--show-domain-delete", metavar="NAME|ID|UUID",
help="Show domain delete window")
parser.add_argument("--show-host-summary", action="store_true",
help="Show connection details window")
return parser.parse_known_args()
class CLITestOptionsClass:
"""
Helper class for parsing and tracking --test-* options
"""
def __init__(self, test_options_str):
opts = []
if test_options_str:
opts = test_options_str.split(",")
def _get(optname):
if optname not in opts:
return False
opts.remove(optname)
return True
self.first_run = _get("first-run")
self.leak_debug = _get("leak-debug")
self.old_poll = _get("old-poll")
self.no_events = _get("no-events")
self.xmleditor_enabled = _get("xmleditor-enabled")
if opts:
print("Unknown --test-options keys: %s" % opts)
sys.exit(1)
def main():
(options, leftovers) = parse_commandline()
cli.setupLogging("virt-manager", options.debug, False, False)
import virtManager
log.debug("virt-manager version: %s", BuildConfig.version)
log.debug("virtManager import: %s", str(virtManager))
if BuildConfig.running_from_srcdir:
_setup_gsettings_path(BuildConfig.gsettings_dir)
if options.trace_libvirt:
log.debug("Libvirt tracing requested")
from virtManager.lib import module_trace
import libvirt
module_trace.wrap_module(libvirt,
mainloop=(options.trace_libvirt == "mainloop"),
regex=None)
CLITestOptions = CLITestOptionsClass(options.test_options)
if options.test_first_run:
CLITestOptions.first_run = True
if options.test_leak_debug:
CLITestOptions.leak_debug = True
if options.test_no_events:
CLITestOptions.no_events = True
if options.test_old_poll:
CLITestOptions.old_poll = True
# With F27 gnome+wayland we need to set these before GTK import
os.environ["GSETTINGS_SCHEMA_DIR"] = BuildConfig.gsettings_dir
if CLITestOptions.first_run:
os.environ["GSETTINGS_BACKEND"] = "memory"
# Now we've got basic environment up & running we can fork
do_drop_stdio = False
if not options.no_fork and not options.debug:
drop_tty()
do_drop_stdio = True
# Ignore SIGHUP, otherwise a serial console closing drops the whole app
signal.signal(signal.SIGHUP, signal.SIG_IGN)
leftovers = _import_gtk(leftovers)
Gtk = globals()["Gtk"]
# Do this after the Gtk import so the user has a chance of seeing any error
if do_drop_stdio:
drop_stdio()
if leftovers:
raise RuntimeError("Unhandled command line options '%s'" % leftovers)
log.debug("PyGObject version: %d.%d.%d",
gi.version_info[0],
gi.version_info[1],
gi.version_info[2])
log.debug("GTK version: %d.%d.%d",
Gtk.get_major_version(),
Gtk.get_minor_version(),
Gtk.get_micro_version())
if not VirtinstConnection.libvirt_new_enough_for_virtmanager(6000):
# We need this version for threaded virConnect access
_show_startup_error(
_("virt-manager requires libvirt 0.6.0 or later."), "")
return
# Prime the vmmConfig cache
virtManager.config.vmmConfig.get_instance(BuildConfig, CLITestOptions)
# Add our icon dir to icon theme
icon_theme = Gtk.IconTheme.get_default()
icon_theme.prepend_search_path(BuildConfig.icon_dir)
from virtManager.engine import vmmEngine
Gtk.Window.set_default_icon_name("virt-manager")
import virtinst.pollhelpers
virtinst.pollhelpers.FORCE_OLD_POLL = CLITestOptions.old_poll
show_window = None
domain = None
if options.show_domain_creator:
show_window = vmmEngine.CLI_SHOW_DOMAIN_CREATOR
elif options.show_host_summary:
show_window = vmmEngine.CLI_SHOW_HOST_SUMMARY
elif options.show_domain_editor:
show_window = vmmEngine.CLI_SHOW_DOMAIN_EDITOR
domain = options.show_domain_editor
elif options.show_domain_performance:
show_window = vmmEngine.CLI_SHOW_DOMAIN_PERFORMANCE
domain = options.show_domain_performance
elif options.show_domain_console:
show_window = vmmEngine.CLI_SHOW_DOMAIN_CONSOLE
domain = options.show_domain_console
elif options.show_domain_delete:
show_window = vmmEngine.CLI_SHOW_DOMAIN_DELETE
domain = options.show_domain_delete
if show_window and options.uri is None:
raise RuntimeError("can't use --show-* options without --connect")
skip_autostart = False
if show_window:
skip_autostart = True
# Hook libvirt events into glib main loop
LibvirtGLib.init(None)
LibvirtGLib.event_register()
engine = vmmEngine.get_instance()
# Actually exit when we receive ctrl-c
from gi.repository import GLib
def _sigint_handler(user_data):
ignore = user_data
log.debug("Received KeyboardInterrupt. Exiting application.")
engine.exit_app()
GLib.unix_signal_add(GLib.PRIORITY_DEFAULT, signal.SIGINT,
_sigint_handler, None)
engine.start(options.uri, show_window, domain, skip_autostart)
if __name__ == "__main__":
try:
main()
except KeyboardInterrupt:
log.debug("Received KeyboardInterrupt. Exiting application.")
except Exception as run_e:
if "Gtk" not in globals():
raise
_show_startup_error(str(run_e), "".join(traceback.format_exc()))