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b93cc3bbc9aeac76ef643833eef71007fe8ad467
virt-manager/virtManager/engine.py
Radostin Stoyanov b93cc3bbc9 pycodestyle: Do not use bare 'except:' 
A bare 'except:' catches all exceptions [1], including SystemExit,
KeyboardInterrupt, and GeneratorExit (which is not an error and should
not normally be caught by user code). In situations where you need to
catch all “normal” errors, you can catch the base class for all normal
exceptions, Exception [2].

[1] https://docs.python.org/2/howto/doanddont.html#except
[2] https://docs.python.org/2/library/exceptions.html#Exception
2017-08-02 13:57:43 -04:00

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#
# Copyright (C) 2006, 2013-2014 Red Hat, Inc.
# Copyright (C) 2006 Daniel P. Berrange <berrange@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 re
import Queue
import threading
import traceback
from gi.repository import Gio
from gi.repository import GLib
from gi.repository import GObject
from gi.repository import Gtk
from . import packageutils
from .about import vmmAbout
from .baseclass import vmmGObject
from .clone import vmmCloneVM
from .connect import vmmConnect
from .connection import vmmConnection
from .preferences import vmmPreferences
from .manager import vmmManager
from .migrate import vmmMigrateDialog
from .details import vmmDetails
from .asyncjob import vmmAsyncJob
from .create import vmmCreate
from .host import vmmHost
from .error import vmmErrorDialog
from .systray import vmmSystray
from .delete import vmmDeleteDialog
# 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.
debug_ref_leaks = False
DETAILS_PERF = 1
DETAILS_CONFIG = 2
DETAILS_CONSOLE = 3
(PRIO_HIGH,
PRIO_LOW) = range(1, 3)
class vmmEngine(vmmGObject):
CLI_SHOW_DOMAIN_CREATOR = "creator"
CLI_SHOW_DOMAIN_EDITOR = "editor"
CLI_SHOW_DOMAIN_PERFORMANCE = "performance"
CLI_SHOW_DOMAIN_CONSOLE = "console"
CLI_SHOW_HOST_SUMMARY = "summary"
__gsignals__ = {
"conn-added": (GObject.SignalFlags.RUN_FIRST, None, [object]),
"conn-removed": (GObject.SignalFlags.RUN_FIRST, None, [str]),
}
def __init__(self):
vmmGObject.__init__(self)
self.windowConnect = None
self.windowPreferences = None
self.windowAbout = None
self.windowCreate = None
self.windowManager = None
self.windowMigrate = None
self.conns = {}
self.err = vmmErrorDialog()
self.err.set_find_parent_cb(self._find_error_parent_cb)
self.timer = None
self.last_timeout = 0
self.systray = None
self.delete_dialog = None
self._gtkapplication = None
self._init_gtk_application()
self._tick_counter = 0
self._tick_thread_slow = False
self._tick_thread = threading.Thread(name="Tick thread",
target=self._handle_tick_queue,
args=())
self._tick_thread.daemon = True
self._tick_queue = Queue.PriorityQueue(100)
self.inspection = None
self._create_inspection_thread()
# Counter keeping track of how many manager and details windows
# are open. When it is decremented to 0, close the app or
# keep running in system tray if enabled
self.windows = 0
self.init_systray()
self.add_gsettings_handle(
self.config.on_stats_update_interval_changed(self.reschedule_timer))
self.add_gsettings_handle(
self.config.on_view_system_tray_changed(self.system_tray_changed))
self.schedule_timer()
self.load_stored_uris()
self._tick_thread.start()
self.tick()
############################
# Gtk Application handling #
############################
def _on_gtk_application_activated(self, ignore):
"""
Invoked after application.run()
"""
if not self._application.get_windows():
logging.debug("Initial gtkapplication activated")
self._application.add_window(Gtk.Window())
def _init_gtk_application(self):
self._application = Gtk.Application(
application_id="org.virt-manager.virt-manager", flags=0)
self._application.register(None)
self._application.connect("activate",
self._on_gtk_application_activated)
action = Gio.SimpleAction.new("cli_command",
GLib.VariantType.new("(sss)"))
action.connect("activate", self._handle_cli_command)
self._application.add_action(action)
def _default_startup(self, skip_autostart):
uris = self.conns.keys()
if not uris:
logging.debug("No stored URIs found.")
else:
logging.debug("Loading stored URIs:\n%s",
" \n".join(sorted(uris)))
if not skip_autostart:
self.idle_add(self.autostart_conns)
if not self.config.get_conn_uris():
# Only add default if no connections are currently known
self.timeout_add(1000, self._add_default_conn)
def start(self, uri, show_window, domain, skip_autostart):
# Dispatch dbus CLI command
data = GLib.Variant("(sss)",
(uri or "", show_window or "", domain or ""))
self._application.activate_action("cli_command", data)
if self._application.get_is_remote():
logging.debug("Connected to remote app instance.")
return
self._default_startup(skip_autostart)
self._application.run(None)
def init_systray(self):
if self.systray:
return
self.systray = vmmSystray()
self.systray.connect("action-toggle-manager", self._do_toggle_manager)
self.systray.connect("action-suspend-domain", self._do_suspend_domain)
self.systray.connect("action-resume-domain", self._do_resume_domain)
self.systray.connect("action-run-domain", self._do_run_domain)
self.systray.connect("action-shutdown-domain", self._do_shutdown_domain)
self.systray.connect("action-reboot-domain", self._do_reboot_domain)
self.systray.connect("action-destroy-domain", self._do_destroy_domain)
self.systray.connect("action-reset-domain", self._do_reset_domain)
self.systray.connect("action-save-domain", self._do_save_domain)
self.systray.connect("action-show-domain", self._do_show_vm)
self.systray.connect("action-migrate-domain", self._do_show_migrate)
self.systray.connect("action-delete-domain", self._do_delete_domain)
self.systray.connect("action-clone-domain", self._do_show_clone)
self.systray.connect("action-exit-app", self.exit_app)
self.connect("conn-added", self.systray.conn_added)
self.connect("conn-removed", self.systray.conn_removed)
def system_tray_changed(self, *ignore):
systray_enabled = self.config.get_view_system_tray()
if self.windows == 0 and not systray_enabled:
# Show the manager so that the user can control the application
self._show_manager()
def _add_default_conn(self):
manager = self.get_manager()
# Manager fail message
msg = _("Could not detect a default hypervisor. Make\n"
"sure the appropriate virtualization packages\n"
"are installed (kvm, qemu, libvirt, etc.), and\n"
"that libvirtd is running.\n\n"
"A hypervisor connection can be manually\n"
"added via File->Add Connection")
logging.debug("Determining default libvirt URI")
ret = None
try:
libvirt_packages = self.config.libvirt_packages
packages = self.config.hv_packages + libvirt_packages
ret = packageutils.check_packagekit(manager, manager.err, packages)
except Exception:
logging.exception("Error talking to PackageKit")
if ret:
tryuri = "qemu:///system"
else:
tryuri = vmmConnect.default_uri()
if tryuri is None:
manager.set_startup_error(msg)
return
warnmsg = _("The 'libvirtd' service will need to be started.\n\n"
"After that, virt-manager will connect to libvirt on\n"
"the next application start up.")
# Do the initial connection in an idle callback, so the
# packagekit async dialog has a chance to go away
def idle_connect():
do_start = packageutils.start_libvirtd()
connected = self.connect_to_uri(tryuri,
autoconnect=True, do_start=do_start)
if not connected and do_start:
manager.err.ok(_("Libvirt service must be started"), warnmsg)
self.idle_add(idle_connect)
def load_stored_uris(self):
uris = self.config.get_conn_uris() or []
for uri in uris:
conn = self.make_conn(uri)
self.register_conn(conn, skip_config=True)
def autostart_conns(self):
"""
We serialize conn autostart, so polkit/ssh-askpass doesn't spam
"""
queue = Queue.Queue()
auto_conns = [uri for uri in self.conns
if self.conns[uri]["conn"].get_autoconnect()]
def add_next_to_queue():
if not auto_conns:
queue.put(None)
else:
queue.put(auto_conns.pop(0))
def state_change_cb(conn):
if conn.is_active():
add_next_to_queue()
conn.disconnect_by_func(state_change_cb)
def connect(uri):
self.connect_to_uri(uri)
def handle_queue():
while True:
uri = queue.get()
if uri is None:
return
if uri not in self.conns:
add_next_to_queue()
continue
conn = self.conns[uri]["conn"]
conn.connect("state-changed", state_change_cb)
self.idle_add(connect, uri)
add_next_to_queue()
self._start_thread(handle_queue, "Conn autostart thread")
def _do_vm_removed(self, conn, connkey):
hvuri = conn.get_uri()
if connkey not in self.conns[hvuri]["windowDetails"]:
return
self.conns[hvuri]["windowDetails"][connkey].cleanup()
del(self.conns[hvuri]["windowDetails"][connkey])
def _do_vm_renamed(self, conn, oldconnkey, newconnkey):
hvuri = conn.get_uri()
if oldconnkey not in self.conns[hvuri]["windowDetails"]:
return
self.conns[hvuri]["windowDetails"][newconnkey] = (
self.conns[hvuri]["windowDetails"].pop(oldconnkey))
def _do_conn_changed(self, conn):
if conn.is_active() or conn.is_connecting():
return
hvuri = conn.get_uri()
for connkey in self.conns[hvuri]["windowDetails"].keys():
self.conns[hvuri]["windowDetails"][connkey].cleanup()
del(self.conns[hvuri]["windowDetails"][connkey])
if (self.windowCreate and
self.windowCreate.conn and
self.windowCreate.conn.get_uri() == hvuri):
self.windowCreate.close()
def reschedule_timer(self, *args, **kwargs):
ignore1 = args
ignore2 = kwargs
self.schedule_timer()
def schedule_timer(self):
interval = self.config.get_stats_update_interval() * 1000
if self.timer is not None:
self.remove_gobject_timeout(self.timer)
self.timer = None
self.timer = self.timeout_add(interval, self.tick)
def _add_obj_to_tick_queue(self, obj, isprio, **kwargs):
if self._tick_queue.full():
if not self._tick_thread_slow:
logging.debug("Tick is slow, not running at requested rate.")
self._tick_thread_slow = True
return
self._tick_counter += 1
self._tick_queue.put((isprio and PRIO_HIGH or PRIO_LOW,
self._tick_counter,
obj, kwargs))
def _schedule_priority_tick(self, conn, kwargs):
self._add_obj_to_tick_queue(conn, True, **kwargs)
def tick(self):
for uri in self.conns:
conn = self.conns[uri]["conn"]
self._add_obj_to_tick_queue(conn, False,
stats_update=True, pollvm=True)
return 1
def _handle_tick_error(self, msg, details):
if self.windows <= 0:
# This means the systray icon is running. Don't raise an error
# here to avoid spamming dialogs out of nowhere.
logging.debug(msg + "\n\n" + details)
return
self.err.show_err(msg, details=details)
def _handle_tick_queue(self):
while True:
ignore1, ignore2, conn, kwargs = self._tick_queue.get()
try:
conn.tick_from_engine(**kwargs)
except Exception as e:
tb = "".join(traceback.format_exc())
error_msg = (_("Error polling connection '%s': %s")
% (conn.get_uri(), e))
self.idle_add(self._handle_tick_error, error_msg, tb)
# Need to clear reference to make leak check happy
conn = None
self._tick_queue.task_done()
return 1
def increment_window_counter(self, src):
ignore = src
self.windows += 1
logging.debug("window counter incremented to %s", self.windows)
def decrement_window_counter(self, src):
self.windows -= 1
logging.debug("window counter decremented to %s", self.windows)
self._exit_app_if_no_windows(src)
def _can_exit(self):
# Don't exit if system tray is enabled
return (self.windows <= 0 and
self.systray and
not self.systray.is_visible())
def _cleanup(self):
self.err = None
if self.inspection:
self.inspection.cleanup()
self.inspection = None
if self.timer is not None:
GLib.source_remove(self.timer)
if self.systray:
self.systray.cleanup()
self.systray = None
self.get_manager()
if self.windowManager:
self.windowManager.cleanup()
self.windowManager = None
if self.windowPreferences:
self.windowPreferences.cleanup()
self.windowPreferences = None
if self.windowAbout:
self.windowAbout.cleanup()
self.windowAbout = None
if self.windowConnect:
self.windowConnect.cleanup()
self.windowConnect = None
if self.windowCreate:
self.windowCreate.cleanup()
self.windowCreate = None
if self.windowMigrate:
self.windowMigrate.cleanup()
self.windowMigrate = None
if self.delete_dialog:
self.delete_dialog.cleanup()
self.delete_dialog = None
# Do this last, so any manually 'disconnected' signals
# take precedence over cleanup signal removal
for uri in self.conns:
self.cleanup_conn(uri)
self.conns = {}
def _exit_app_if_no_windows(self, src=None):
def cb():
if self._can_exit():
logging.debug("No windows found, requesting app exit")
self.exit_app(src or self)
self.idle_add(cb)
def exit_app(self, src):
if self.err is None:
# Already in cleanup
return
self.cleanup()
if debug_ref_leaks:
objs = self.config.get_objects()
# Engine will always appear to leak
objs.remove(self.object_key)
if src.object_key in objs:
# UI that initiates the app exit will always appear to leak
objs.remove(src.object_key)
for name in objs:
logging.debug("Leaked %s", name)
logging.debug("Exiting app normally.")
self._application.quit()
def _create_inspection_thread(self):
logging.debug("libguestfs inspection support: %s",
self.config.support_inspection)
if not self.config.support_inspection:
return
from .inspection import vmmInspection
self.inspection = vmmInspection()
self.inspection.start()
self.connect("conn-added", self.inspection.conn_added)
self.connect("conn-removed", self.inspection.conn_removed)
return
def _find_error_parent_cb(self):
"""
Search over the toplevel windows for any that are visible or have
focus, and use that
"""
windowlist = [self.windowManager]
for conndict in self.conns.values():
windowlist.extend(conndict["windowDetails"].values())
windowlist.extend(
[conndict["windowHost"] for conndict in self.conns.values()])
use_win = None
for window in windowlist:
if not window:
continue
if window.topwin.has_focus():
use_win = window
break
if not use_win and window.is_visible():
use_win = window
if use_win:
return use_win.topwin
def make_conn(self, uri, probe=False):
conn = self._check_conn(uri)
if conn:
return conn
conn = vmmConnection(uri)
self.conns[uri] = {
"conn": conn,
"windowHost": None,
"windowDetails": {},
"windowClone": None,
"probeConnection": probe
}
conn.connect("vm-removed", self._do_vm_removed)
conn.connect("vm-renamed", self._do_vm_renamed)
conn.connect("state-changed", self._do_conn_changed)
conn.connect("connect-error", self._connect_error)
conn.connect("priority-tick", self._schedule_priority_tick)
return conn
def register_conn(self, conn, skip_config=False):
# if `skip_config' then the connection is only showed in the ui and
# not added to the config.
if not skip_config and conn.get_uri() not in \
(self.config.get_conn_uris() or []):
self.config.add_conn(conn.get_uri())
self.emit("conn-added", conn)
def connect_to_uri(self, uri, autoconnect=None, do_start=True, probe=False):
try:
conn = self.make_conn(uri, probe=probe)
self.register_conn(conn)
if autoconnect is not None:
conn.set_autoconnect(bool(autoconnect))
if do_start:
conn.open()
else:
try:
conn.open()
except Exception:
return None
return conn
except Exception:
logging.exception("Error connecting to %s", uri)
return None
def cleanup_conn(self, uri):
try:
if self.conns[uri]["windowHost"]:
self.conns[uri]["windowHost"].cleanup()
if self.conns[uri]["windowClone"]:
self.conns[uri]["windowClone"].cleanup()
details = self.conns[uri]["windowDetails"]
for win in details.values():
win.cleanup()
self.conns[uri]["conn"].cleanup()
except Exception:
logging.exception("Error cleaning up conn in engine")
def remove_conn(self, src, uri):
ignore = src
self.cleanup_conn(uri)
del(self.conns[uri])
self.emit("conn-removed", uri)
self.config.remove_conn(uri)
def connect(self, name, callback, *args):
handle_id = vmmGObject.connect(self, name, callback, *args)
if name == "conn-added":
for conn_dict in self.conns.values():
self.emit("conn-added", conn_dict["conn"])
return handle_id
def _check_conn(self, uri):
conn = self.conns.get(uri)
if conn:
return conn["conn"]
return None
def _lookup_conn(self, uri):
conn = self._check_conn(uri)
if not conn:
raise RuntimeError(_("Unknown connection URI %s") % uri)
return conn
def _connect_error(self, conn, errmsg, tb, warnconsole):
errmsg = errmsg.strip(" \n")
tb = tb.strip(" \n")
hint = ""
show_errmsg = True
if conn.is_remote():
logging.debug("connect_error: conn transport=%s",
conn.get_uri_transport())
if re.search(r"nc: .* -- 'U'", tb):
hint += _("The remote host requires a version of netcat/nc\n"
"which supports the -U option.")
show_errmsg = False
elif (conn.get_uri_transport() == "ssh" and
re.search(r"ssh-askpass", tb)):
if self.config.askpass_package:
ret = packageutils.check_packagekit(
None,
self.err,
self.config.askpass_package)
if ret:
conn.open()
return
hint += _("You need to install openssh-askpass or "
"similar\nto connect to this host.")
show_errmsg = False
else:
hint += _("Verify that the 'libvirtd' daemon is running\n"
"on the remote host.")
elif conn.is_xen():
hint += _("Verify that:\n"
" - A Xen host kernel was booted\n"
" - The Xen service has been started")
else:
if warnconsole:
hint += _("Could not detect a local session: if you are \n"
"running virt-manager over ssh -X or VNC, you \n"
"may not be able to connect to libvirt as a \n"
"regular user. Try running as root.")
show_errmsg = False
elif re.search(r"libvirt-sock", tb):
hint += _("Verify that the 'libvirtd' daemon is running.")
show_errmsg = False
probe_connection = self.conns[conn.get_uri()]["probeConnection"]
msg = _("Unable to connect to libvirt.")
if show_errmsg:
msg += "\n\n%s" % errmsg
if hint:
msg += "\n\n%s" % hint
msg = msg.strip("\n")
details = msg
details += "\n\n"
details += "Libvirt URI is: %s\n\n" % conn.get_uri()
details += tb
if probe_connection:
msg += "\n\n"
msg += _("Would you still like to remember this connection?")
title = _("Virtual Machine Manager Connection Failure")
if probe_connection:
remember_connection = self.err.show_err(msg, details, title,
buttons=Gtk.ButtonsType.YES_NO,
dialog_type=Gtk.MessageType.QUESTION, modal=True)
if remember_connection:
self.conns[conn.get_uri()]["probeConnection"] = False
else:
self.idle_add(self._do_edit_connect, self.windowManager, conn)
else:
if self._can_exit():
self.err.show_err(msg, details, title, modal=True)
self._exit_app_if_no_windows(conn)
else:
self.err.show_err(msg, details, title)
####################
# Dialog launchers #
####################
def _do_show_about(self, src):
try:
if self.windowAbout is None:
self.windowAbout = vmmAbout()
self.windowAbout.show()
except Exception as e:
src.err.show_err(_("Error launching 'About' dialog: %s") % str(e))
def _get_preferences(self):
if self.windowPreferences:
return self.windowPreferences
obj = vmmPreferences()
self.windowPreferences = obj
return self.windowPreferences
def _do_show_preferences(self, src):
try:
self._get_preferences().show(src.topwin)
except Exception as e:
src.err.show_err(_("Error launching preferences: %s") % str(e))
def _get_host_dialog(self, uri):
if self.conns[uri]["windowHost"]:
return self.conns[uri]["windowHost"]
conn = self._lookup_conn(uri)
obj = vmmHost(conn)
obj.connect("action-exit-app", self.exit_app)
obj.connect("action-view-manager", self._do_show_manager)
obj.connect("host-opened", self.increment_window_counter)
obj.connect("host-closed", self.decrement_window_counter)
self.conns[uri]["windowHost"] = obj
return self.conns[uri]["windowHost"]
def _do_show_host(self, src, uri):
try:
self._get_host_dialog(uri).show()
except Exception as e:
src.err.show_err(_("Error launching host dialog: %s") % str(e))
def _get_connect_dialog(self):
if self.windowConnect:
return self.windowConnect
def completed(src, uri, autoconnect):
ignore = src
return self.connect_to_uri(uri, autoconnect, probe=True)
def cancelled(src):
if len(self.conns.keys()) == 0:
self.exit_app(src)
obj = vmmConnect()
obj.connect("completed", completed)
obj.connect("cancelled", cancelled)
self.windowConnect = obj
return self.windowConnect
def _do_show_connect(self, src, reset_state=True):
try:
self._get_connect_dialog().show(src.topwin, reset_state)
except Exception as e:
src.err.show_err(_("Error launching connect dialog: %s") % str(e))
def _do_edit_connect(self, src, connection):
try:
self._do_show_connect(src, False)
finally:
self.remove_conn(None, connection.get_uri())
def _get_details_dialog(self, uri, connkey):
if connkey in self.conns[uri]["windowDetails"]:
return self.conns[uri]["windowDetails"][connkey]
conn = self._lookup_conn(uri)
obj = vmmDetails(conn.get_vm(connkey))
obj.connect("action-save-domain", self._do_save_domain)
obj.connect("action-destroy-domain", self._do_destroy_domain)
obj.connect("action-reset-domain", self._do_reset_domain)
obj.connect("action-suspend-domain", self._do_suspend_domain)
obj.connect("action-resume-domain", self._do_resume_domain)
obj.connect("action-run-domain", self._do_run_domain)
obj.connect("action-shutdown-domain", self._do_shutdown_domain)
obj.connect("action-reboot-domain", self._do_reboot_domain)
obj.connect("action-exit-app", self.exit_app)
obj.connect("action-view-manager", self._do_show_manager)
obj.connect("action-migrate-domain", self._do_show_migrate)
obj.connect("action-delete-domain", self._do_delete_domain)
obj.connect("action-clone-domain", self._do_show_clone)
obj.connect("details-opened", self.increment_window_counter)
obj.connect("details-closed", self.decrement_window_counter)
obj.connect("inspection-refresh", self._do_refresh_inspection)
self.conns[uri]["windowDetails"][connkey] = obj
return self.conns[uri]["windowDetails"][connkey]
def _show_vm_helper(self, src, uri, vm, page, forcepage):
try:
details = self._get_details_dialog(uri, vm.get_connkey())
if forcepage or not details.is_visible():
if page == DETAILS_PERF:
details.activate_performance_page()
elif page == DETAILS_CONFIG:
details.activate_config_page()
elif page == DETAILS_CONSOLE:
details.activate_console_page()
elif page is None:
details.activate_default_page()
details.show()
except Exception as e:
src.err.show_err(_("Error launching details: %s") % str(e))
def _do_show_vm(self, src, uri, connkey):
conn = self._lookup_conn(uri)
vm = conn.get_vm(connkey)
self._show_vm_helper(src, uri, vm, None, False)
def get_manager(self):
if self.windowManager:
return self.windowManager
obj = vmmManager()
obj.connect("action-suspend-domain", self._do_suspend_domain)
obj.connect("action-resume-domain", self._do_resume_domain)
obj.connect("action-run-domain", self._do_run_domain)
obj.connect("action-shutdown-domain", self._do_shutdown_domain)
obj.connect("action-reboot-domain", self._do_reboot_domain)
obj.connect("action-destroy-domain", self._do_destroy_domain)
obj.connect("action-reset-domain", self._do_reset_domain)
obj.connect("action-save-domain", self._do_save_domain)
obj.connect("action-migrate-domain", self._do_show_migrate)
obj.connect("action-delete-domain", self._do_delete_domain)
obj.connect("action-clone-domain", self._do_show_clone)
obj.connect("action-show-domain", self._do_show_vm)
obj.connect("action-show-preferences", self._do_show_preferences)
obj.connect("action-show-create", self._do_show_create)
obj.connect("action-show-about", self._do_show_about)
obj.connect("action-show-host", self._do_show_host)
obj.connect("action-show-connect", self._do_show_connect)
obj.connect("action-exit-app", self.exit_app)
obj.connect("manager-opened", self.increment_window_counter)
obj.connect("manager-closed", self.decrement_window_counter)
obj.connect("remove-conn", self.remove_conn)
self.connect("conn-added", obj.add_conn)
self.connect("conn-removed", obj.remove_conn)
self.windowManager = obj
return self.windowManager
def _do_toggle_manager(self, ignore):
manager = self.get_manager()
if manager.is_visible():
manager.close()
else:
manager.show()
def _do_show_manager(self, src):
try:
manager = self.get_manager()
manager.show()
except Exception as e:
if not src:
raise
src.err.show_err(_("Error launching manager: %s") % str(e))
def _get_create_dialog(self):
if self.windowCreate:
return self.windowCreate
obj = vmmCreate(self)
obj.connect("action-show-domain", self._do_show_vm)
obj.connect("create-opened", self.increment_window_counter)
obj.connect("create-closed", self.decrement_window_counter)
self.windowCreate = obj
return self.windowCreate
def _do_show_create(self, src, uri):
try:
self._get_create_dialog().show(src.topwin, uri)
except Exception as e:
src.err.show_err(_("Error launching manager: %s") % str(e))
def _do_show_migrate(self, src, uri, connkey):
try:
conn = self._lookup_conn(uri)
vm = conn.get_vm(connkey)
if not self.windowMigrate:
self.windowMigrate = vmmMigrateDialog(self)
self.windowMigrate.show(src.topwin, vm)
except Exception as e:
src.err.show_err(_("Error launching migrate dialog: %s") % str(e))
def _do_show_clone(self, src, uri, connkey):
conn = self._lookup_conn(uri)
orig_vm = conn.get_vm(connkey)
clone_window = self.conns[uri]["windowClone"]
try:
if clone_window is None:
clone_window = vmmCloneVM(orig_vm)
self.conns[uri]["windowClone"] = clone_window
else:
clone_window.set_orig_vm(orig_vm)
clone_window.show(src.topwin)
except Exception as e:
src.err.show_err(_("Error setting clone parameters: %s") % str(e))
def _do_refresh_inspection(self, src_ignore, uri, connkey):
if not self.inspection:
return
conn = self._lookup_conn(uri)
vm = conn.get_vm(connkey)
self.inspection.vm_refresh(vm)
##########################################
# Window launchers from virt-manager cli #
##########################################
def _find_vm_by_cli_str(self, uri, clistr):
"""
Lookup a VM by a string passed in on the CLI. Can be either
ID, domain name, or UUID
"""
if clistr.isdigit():
clistr = int(clistr)
for vm in self.conns[uri]["conn"].list_vms():
if clistr == vm.get_id():
return vm
elif clistr == vm.get_name():
return vm
elif clistr == vm.get_uuid():
return vm
def _cli_show_vm_helper(self, uri, clistr, page):
src = self.get_manager()
vm = self._find_vm_by_cli_str(uri, clistr)
if not vm:
src.err.show_err("%s does not have VM '%s'" %
(uri, clistr), modal=True)
return
self._show_vm_helper(src, uri, vm, page, True)
def _show_manager(self):
self._do_show_manager(None)
def _show_host_summary(self, uri):
self._do_show_host(self.get_manager(), uri)
def _show_domain_creator(self, uri):
self._do_show_create(self.get_manager(), uri)
def _show_domain_console(self, uri, clistr):
self._cli_show_vm_helper(uri, clistr, DETAILS_CONSOLE)
def _show_domain_editor(self, uri, clistr):
self._cli_show_vm_helper(uri, clistr, DETAILS_CONFIG)
def _show_domain_performance(self, uri, clistr):
self._cli_show_vm_helper(uri, clistr, DETAILS_PERF)
def _launch_cli_window(self, uri, show_window, clistr):
try:
logging.debug("Launching requested window '%s'", show_window)
if show_window == self.CLI_SHOW_DOMAIN_CREATOR:
self._show_domain_creator(uri)
elif show_window == self.CLI_SHOW_DOMAIN_EDITOR:
self._show_domain_editor(uri, clistr)
elif show_window == self.CLI_SHOW_DOMAIN_PERFORMANCE:
self._show_domain_performance(uri, clistr)
elif show_window == self.CLI_SHOW_DOMAIN_CONSOLE:
self._show_domain_console(uri, clistr)
elif show_window == self.CLI_SHOW_HOST_SUMMARY:
self._show_host_summary(uri)
else:
raise RuntimeError("Unknown cli window command '%s'" %
show_window)
finally:
# In case of cli error, we may need to exit the app
self._exit_app_if_no_windows()
def _cli_conn_connected_cb(self, conn, uri, show_window, domain):
try:
ignore = conn
if conn.is_disconnected():
raise RuntimeError("failed to connect to cli uri=%s" % uri)
if conn.is_active():
self._launch_cli_window(uri, show_window, domain)
return True
return False
except Exception:
# In case of cli error, we may need to exit the app
logging.debug("Error in cli connection callback", exc_info=True)
self._exit_app_if_no_windows()
return True
def _do_handle_cli_command(self, actionobj, variant):
ignore = actionobj
uri = variant[0]
show_window = variant[1]
domain = variant[2]
logging.debug("processing cli command uri=%s show_window=%s domain=%s",
uri, show_window, domain)
if not uri:
logging.debug("No cli action requested, launching default window")
self._show_manager()
return
conn = self.make_conn(uri)
self.register_conn(conn, skip_config=True)
if conn.is_disconnected():
# Schedule connection open
def connect():
# We need to wrap this to ignore the return value, otherwise
# the callback will be rescheduled
self.connect_to_uri(uri)
self.idle_add(connect)
if show_window:
if conn.is_active():
self.idle_add(self._launch_cli_window,
uri, show_window, domain)
else:
conn.connect_opt_out("state-changed",
self._cli_conn_connected_cb, uri, show_window, domain)
else:
self.get_manager().set_initial_selection(uri)
self._show_manager()
def _handle_cli_command(self, actionobj, variant):
try:
return self._do_handle_cli_command(actionobj, variant)
except Exception:
# In case of cli error, we may need to exit the app
logging.debug("Error handling cli command", exc_info=True)
self._exit_app_if_no_windows()
#######################################
# Domain actions run/destroy/save ... #
#######################################
def _do_save_domain(self, src, uri, connkey):
conn = self._lookup_conn(uri)
vm = conn.get_vm(connkey)
if not src.err.chkbox_helper(self.config.get_confirm_poweroff,
self.config.set_confirm_poweroff,
text1=_("Are you sure you want to save '%s'?") % vm.get_name()):
return
_cancel_cb = None
if vm.getjobinfo_supported:
_cancel_cb = (self._save_cancel, vm)
def cb(asyncjob):
vm.save(meter=asyncjob.get_meter())
def finish_cb(error, details):
if error is not None:
error = _("Error saving domain: %s") % error
src.err.show_err(error, details=details)
progWin = vmmAsyncJob(cb, [],
finish_cb, [],
_("Saving Virtual Machine"),
_("Saving virtual machine memory to disk "),
src.topwin, cancel_cb=_cancel_cb)
progWin.run()
def _save_cancel(self, asyncjob, vm):
logging.debug("Cancelling save job")
if not vm:
return
try:
vm.abort_job()
except Exception as e:
logging.exception("Error cancelling save job")
asyncjob.show_warning(_("Error cancelling save job: %s") % str(e))
return
asyncjob.job_canceled = True
return
def _do_destroy_domain(self, src, uri, connkey):
conn = self._lookup_conn(uri)
vm = conn.get_vm(connkey)
if not src.err.chkbox_helper(
self.config.get_confirm_forcepoweroff,
self.config.set_confirm_forcepoweroff,
text1=_("Are you sure you want to force poweroff '%s'?" %
vm.get_name()),
text2=_("This will immediately poweroff the VM without "
"shutting down the OS and may cause data loss.")):
return
logging.debug("Destroying vm '%s'", vm.get_name())
vmmAsyncJob.simple_async_noshow(vm.destroy, [], src,
_("Error shutting down domain"))
def _do_suspend_domain(self, src, uri, connkey):
conn = self._lookup_conn(uri)
vm = conn.get_vm(connkey)
if not src.err.chkbox_helper(self.config.get_confirm_pause,
self.config.set_confirm_pause,
text1=_("Are you sure you want to pause '%s'?" %
vm.get_name())):
return
logging.debug("Pausing vm '%s'", vm.get_name())
vmmAsyncJob.simple_async_noshow(vm.suspend, [], src,
_("Error pausing domain"))
def _do_resume_domain(self, src, uri, connkey):
conn = self._lookup_conn(uri)
vm = conn.get_vm(connkey)
logging.debug("Unpausing vm '%s'", vm.get_name())
vmmAsyncJob.simple_async_noshow(vm.resume, [], src,
_("Error unpausing domain"))
def _do_run_domain(self, src, uri, connkey):
conn = self._lookup_conn(uri)
vm = conn.get_vm(connkey)
logging.debug("Starting vm '%s'", vm.get_name())
if vm.has_managed_save():
def errorcb(error, details):
# This is run from the main thread
res = src.err.show_err(
_("Error restoring domain") + ": " + error,
details=details,
text2=_(
"The domain could not be restored. Would you like\n"
"to remove the saved state and perform a regular\n"
"start up?"),
dialog_type=Gtk.MessageType.WARNING,
buttons=Gtk.ButtonsType.YES_NO,
modal=True)
if not res:
return
try:
vm.remove_saved_image()
self._do_run_domain(src, uri, connkey)
except Exception as e:
src.err.show_err(_("Error removing domain state: %s")
% str(e))
# VM will be restored, which can take some time, so show progress
title = _("Restoring Virtual Machine")
text = _("Restoring virtual machine memory from disk")
vmmAsyncJob.simple_async(vm.startup, [], src,
title, text, "", errorcb=errorcb)
else:
# Regular startup
errorintro = _("Error starting domain")
vmmAsyncJob.simple_async_noshow(vm.startup, [], src, errorintro)
def _do_shutdown_domain(self, src, uri, connkey):
conn = self._lookup_conn(uri)
vm = conn.get_vm(connkey)
if not src.err.chkbox_helper(self.config.get_confirm_poweroff,
self.config.set_confirm_poweroff,
text1=_("Are you sure you want to poweroff '%s'?" %
vm.get_name())):
return
logging.debug("Shutting down vm '%s'", vm.get_name())
vmmAsyncJob.simple_async_noshow(vm.shutdown, [], src,
_("Error shutting down domain"))
def _do_reboot_domain(self, src, uri, connkey):
conn = self._lookup_conn(uri)
vm = conn.get_vm(connkey)
if not src.err.chkbox_helper(self.config.get_confirm_poweroff,
self.config.set_confirm_poweroff,
text1=_("Are you sure you want to reboot '%s'?" %
vm.get_name())):
return
logging.debug("Rebooting vm '%s'", vm.get_name())
vmmAsyncJob.simple_async_noshow(vm.reboot, [], src,
_("Error rebooting domain"))
def _do_reset_domain(self, src, uri, connkey):
conn = self._lookup_conn(uri)
vm = conn.get_vm(connkey)
if not src.err.chkbox_helper(
self.config.get_confirm_forcepoweroff,
self.config.set_confirm_forcepoweroff,
text1=_("Are you sure you want to force reset '%s'?" %
vm.get_name()),
text2=_("This will immediately reset the VM without "
"shutting down the OS and may cause data loss.")):
return
logging.debug("Resetting vm '%s'", vm.get_name())
vmmAsyncJob.simple_async_noshow(vm.reset, [], src,
_("Error resetting domain"))
def _do_delete_domain(self, src, uri, connkey):
conn = self._lookup_conn(uri)
vm = conn.get_vm(connkey)
try:
if not self.delete_dialog:
self.delete_dialog = vmmDeleteDialog()
self.delete_dialog.show(vm, src.topwin)
except Exception as e:
src.err.show_err(_("Error launching delete dialog: %s") % str(e))
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