mirror of
https://github.com/virt-manager/virt-manager.git
synced 2024-12-23 17:34:21 +03:00
654 lines
22 KiB
Python
654 lines
22 KiB
Python
# Copyright (C) 2013-2014 Red Hat, Inc.
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# Copyright (C) 2013 Cole Robinson <crobinso@redhat.com>
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#
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# This work is licensed under the GNU GPLv2 or later.
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# See the COPYING file in the top-level directory.
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import datetime
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import glob
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import io
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import logging
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import os
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from gi.repository import Gdk
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from gi.repository import GdkPixbuf
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from gi.repository import Gtk
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from gi.repository import Pango
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from virtinst import DomainSnapshot
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from virtinst import util
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from . import uiutil
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from .baseclass import vmmGObjectUI
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from .asyncjob import vmmAsyncJob
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mimemap = {
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"image/x-portable-pixmap": "ppm",
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"image/png": "png",
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}
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def _mime_to_ext(val, reverse=False):
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for m, e in mimemap.items():
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if val == m and not reverse:
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return e
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if val == e and reverse:
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return m
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logging.debug("Don't know how to convert %s=%s to %s",
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reverse and "extension" or "mime", val,
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reverse and "mime" or "extension")
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class vmmSnapshotPage(vmmGObjectUI):
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def __init__(self, vm, builder, topwin):
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vmmGObjectUI.__init__(self, "snapshots.ui",
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None, builder=builder, topwin=topwin)
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self.vm = vm
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self._initial_populate = False
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self._unapplied_changes = False
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self._snapmenu = None
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self._init_ui()
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self._snapshot_new = self.widget("snapshot-new")
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self._snapshot_new.set_transient_for(self.topwin)
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self.bind_escape_key_close_helper(self._snapshot_new,
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self._snapshot_new_close)
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self.builder.connect_signals({
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"on_snapshot_add_clicked": self._on_add_clicked,
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"on_snapshot_delete_clicked": self._on_delete_clicked,
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"on_snapshot_start_clicked": self._on_start_clicked,
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"on_snapshot_apply_clicked": self._on_apply_clicked,
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"on_snapshot_list_changed": self._snapshot_selected,
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"on_snapshot_list_button_press_event": self._popup_snapshot_menu,
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"on_snapshot_refresh_clicked": self._on_refresh_clicked,
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"on_snapshot_list_row_activated": self._on_start_clicked,
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# 'Create' dialog
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"on_snapshot_new_delete_event": self._snapshot_new_close,
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"on_snapshot_new_ok_clicked": self._on_new_ok_clicked,
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"on_snapshot_new_cancel_clicked": self._snapshot_new_close,
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"on_snapshot_new_name_changed": self._snapshot_new_name_changed,
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"on_snapshot_new_name_activate": self._on_new_ok_clicked,
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})
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self.top_box = self.widget("snapshot-top-box")
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self.widget("snapshot-top-window").remove(self.top_box)
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selection = self.widget("snapshot-list").get_selection()
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selection.emit("changed")
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selection.set_mode(Gtk.SelectionMode.MULTIPLE)
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selection.set_select_function(self._confirm_changes, None)
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##############
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# Init stuff #
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##############
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def _cleanup(self):
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self.vm = None
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self._snapshot_new.destroy()
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self._snapshot_new = None
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self._snapmenu = None
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def _init_ui(self):
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# pylint: disable=redefined-variable-type
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blue = Gdk.color_parse("#0072A8")
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self.widget("header").modify_bg(Gtk.StateType.NORMAL, blue)
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self.widget("snapshot-notebook").set_show_tabs(False)
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buf = Gtk.TextBuffer()
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buf.connect("changed", self._description_changed)
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self.widget("snapshot-description").set_buffer(buf)
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buf = Gtk.TextBuffer()
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self.widget("snapshot-new-description").set_buffer(buf)
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# [name, row label, tooltip, icon name, sortname, current]
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model = Gtk.ListStore(str, str, str, str, str, bool)
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model.set_sort_column_id(4, Gtk.SortType.ASCENDING)
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col = Gtk.TreeViewColumn("")
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col.set_min_width(150)
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col.set_spacing(6)
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img = Gtk.CellRendererPixbuf()
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img.set_property("stock-size", Gtk.IconSize.LARGE_TOOLBAR)
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col.pack_start(img, False)
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col.add_attribute(img, 'icon-name', 3)
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txt = Gtk.CellRendererText()
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txt.set_property("ellipsize", Pango.EllipsizeMode.END)
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col.pack_start(txt, False)
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col.add_attribute(txt, 'markup', 1)
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img = Gtk.CellRendererPixbuf()
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img.set_property("stock-size", Gtk.IconSize.MENU)
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img.set_property("icon-name", Gtk.STOCK_APPLY)
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img.set_property("xalign", 0.0)
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col.pack_start(img, False)
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col.add_attribute(img, "visible", 5)
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def _sep_cb(_model, _iter, ignore):
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return not bool(_model[_iter][0])
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slist = self.widget("snapshot-list")
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slist.set_model(model)
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slist.set_tooltip_column(2)
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slist.append_column(col)
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slist.set_row_separator_func(_sep_cb, None)
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# Snapshot popup menu
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menu = Gtk.Menu()
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item = Gtk.ImageMenuItem.new_with_label(_("_Start snapshot"))
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item.set_use_underline(True)
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img = Gtk.Image()
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img.set_from_stock(Gtk.STOCK_MEDIA_PLAY, Gtk.IconSize.MENU)
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item.set_image(img)
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item.show()
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item.connect("activate", self._on_start_clicked)
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menu.add(item)
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item = Gtk.ImageMenuItem.new_with_label(_("_Delete snapshot"))
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item.set_use_underline(True)
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img = Gtk.Image()
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img.set_from_stock(Gtk.STOCK_DELETE, Gtk.IconSize.MENU)
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item.set_image(img)
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item.show()
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item.connect("activate", self._on_delete_clicked)
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menu.add(item)
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self._snapmenu = menu
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###################
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# Functional bits #
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###################
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def _get_selected_snapshots(self):
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selection = self.widget("snapshot-list").get_selection()
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def add_snap(treemodel, path, it, snaps):
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ignore = path
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try:
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name = treemodel[it][0]
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for snap in self.vm.list_snapshots():
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if name == snap.get_name():
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snaps.append(snap)
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except Exception:
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pass
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snaps = []
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selection.selected_foreach(add_snap, snaps)
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return snaps
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def _refresh_snapshots(self, select_name=None):
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self.vm.refresh_snapshots()
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self._populate_snapshot_list(select_name)
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def show_page(self):
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if not self._initial_populate:
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self._populate_snapshot_list()
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def _set_error_page(self, msg):
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self._set_snapshot_state(None)
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self.widget("snapshot-notebook").set_current_page(1)
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self.widget("snapshot-error-label").set_text(msg)
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def _populate_snapshot_list(self, select_name=None):
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cursnaps = []
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for i in self._get_selected_snapshots():
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cursnaps.append(i.get_name())
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model = self.widget("snapshot-list").get_model()
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model.clear()
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try:
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snapshots = self.vm.list_snapshots()
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except Exception as e:
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logging.exception(e)
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self._set_error_page(_("Error refreshing snapshot list: %s") %
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str(e))
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return
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has_external = False
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has_internal = False
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for snap in snapshots:
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desc = snap.get_xmlobj().description
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name = snap.get_name()
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state = snap.run_status()
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if snap.is_external():
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has_external = True
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sortname = "3%s" % name
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external = " (%s)" % _("External")
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else:
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has_internal = True
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external = ""
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sortname = "1%s" % name
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label = "%s\n<span size='small'>%s: %s%s</span>" % (
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(util.xml_escape(name), _("VM State"),
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util.xml_escape(state), external))
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model.append([name, label, desc, snap.run_status_icon_name(),
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sortname, snap.is_current()])
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if has_internal and has_external:
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model.append([None, None, None, None, "2", False])
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def check_selection(treemodel, path, it, snaps):
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if select_name:
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if treemodel[it][0] == select_name:
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selection.select_path(path)
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elif treemodel[it][0] in snaps:
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selection.select_path(path)
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selection = self.widget("snapshot-list").get_selection()
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model = self.widget("snapshot-list").get_model()
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selection.unselect_all()
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model.foreach(check_selection, cursnaps)
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self._initial_populate = True
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def _make_screenshot_pixbuf(self, mime, sdata):
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loader = GdkPixbuf.PixbufLoader.new_with_mime_type(mime)
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loader.write(sdata)
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pixbuf = loader.get_pixbuf()
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loader.close()
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maxsize = 450
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def _scale(big, small, maxsize):
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if big <= maxsize:
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return big, small
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factor = float(maxsize) / float(big)
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return maxsize, int(factor * float(small))
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width = pixbuf.get_width()
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height = pixbuf.get_height()
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if width > height:
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width, height = _scale(width, height, maxsize)
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else:
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height, width = _scale(height, width, maxsize)
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return pixbuf.scale_simple(width, height,
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GdkPixbuf.InterpType.BILINEAR)
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def _read_screenshot_file(self, name):
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if not name:
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return
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cache_dir = self.vm.get_cache_dir()
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basename = os.path.join(cache_dir, "snap-screenshot-%s" % name)
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files = glob.glob(basename + ".*")
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if not files:
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return
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filename = files[0]
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mime = _mime_to_ext(os.path.splitext(filename)[1][1:], reverse=True)
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if not mime:
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return
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return self._make_screenshot_pixbuf(mime, open(filename, "rb").read())
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def _set_snapshot_state(self, snap=None):
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self.widget("snapshot-notebook").set_current_page(0)
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xmlobj = snap and snap.get_xmlobj() or None
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name = snap and xmlobj.name or ""
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desc = snap and xmlobj.description or ""
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state = snap and snap.run_status() or ""
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icon = snap and snap.run_status_icon_name() or None
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is_external = snap and snap.is_external() or False
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is_current = snap and snap.is_current() or False
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timestamp = ""
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if snap:
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timestamp = str(datetime.datetime.fromtimestamp(
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xmlobj.creationTime))
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title = ""
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if name:
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title = "<b>Snapshot '%s':</b>" % util.xml_escape(name)
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uiutil.set_grid_row_visible(
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self.widget("snapshot-is-current"), is_current)
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self.widget("snapshot-title").set_markup(title)
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self.widget("snapshot-timestamp").set_text(timestamp)
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self.widget("snapshot-description").get_buffer().set_text(desc)
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self.widget("snapshot-status-text").set_text(state)
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if icon:
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self.widget("snapshot-status-icon").set_from_icon_name(
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icon, Gtk.IconSize.BUTTON)
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uiutil.set_grid_row_visible(self.widget("snapshot-mode"),
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is_external)
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if is_external:
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is_mem = xmlobj.memory_type == "external"
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is_disk = [d.snapshot == "external" for d in xmlobj.disks]
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if is_mem and is_disk:
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mode = _("External disk and memory")
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elif is_mem:
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mode = _("External memory only")
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else:
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mode = _("External disk only")
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self.widget("snapshot-mode").set_text(mode)
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sn = self._read_screenshot_file(name)
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self.widget("snapshot-screenshot").set_visible(bool(sn))
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self.widget("snapshot-screenshot-label").set_visible(not bool(sn))
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if sn:
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self.widget("snapshot-screenshot").set_from_pixbuf(sn)
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self.widget("snapshot-add").set_sensitive(True)
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self.widget("snapshot-delete").set_sensitive(bool(snap))
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self.widget("snapshot-start").set_sensitive(bool(snap))
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self.widget("snapshot-apply").set_sensitive(False)
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self._unapplied_changes = False
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def _confirm_changes(self, sel, model, path, path_selected, user_data):
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ignore1 = sel
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ignore2 = path
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ignore3 = model
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ignore4 = user_data
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if not self._unapplied_changes or not path_selected:
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return True
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if self.err.confirm_unapplied_changes():
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self._apply()
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return True
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##################
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# 'New' handling #
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##################
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def _take_screenshot(self):
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stream = None
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try:
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stream = self.vm.conn.get_backend().newStream(0)
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screen = 0
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flags = 0
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mime = self.vm.get_backend().screenshot(stream, screen, flags)
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ret = io.BytesIO()
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def _write_cb(_stream, data, userdata):
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ignore = stream
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ignore = userdata
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ret.write(data)
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stream.recvAll(_write_cb, None)
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return mime, ret.getvalue()
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finally:
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try:
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if stream:
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stream.finish()
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except Exception:
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pass
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def _get_screenshot(self):
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if not self.vm.is_active():
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logging.debug("Skipping screenshot since VM is not active")
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return
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if not self.vm.xmlobj.devices.graphics:
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logging.debug("Skipping screenshot since VM has no graphics")
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return
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try:
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# Perform two screenshots, because qemu + qxl has a bug where
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# screenshot generally only shows the data from the previous
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# screenshot request:
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# https://bugs.launchpad.net/qemu/+bug/1314293
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self._take_screenshot()
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mime, sdata = self._take_screenshot()
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except Exception:
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logging.exception("Error taking screenshot")
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return
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ext = _mime_to_ext(mime)
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if not ext:
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return
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newpix = self._make_screenshot_pixbuf(mime, sdata)
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setattr(newpix, "vmm_mimetype", mime)
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setattr(newpix, "vmm_sndata", sdata)
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return newpix
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def _reset_new_state(self):
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collidelist = [s.get_xmlobj().name for s in self.vm.list_snapshots()]
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default_name = DomainSnapshot.find_free_name(
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self.vm.get_backend(), collidelist)
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self.widget("snapshot-new-name").set_text(default_name)
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self.widget("snapshot-new-name").emit("changed")
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self.widget("snapshot-new-description").get_buffer().set_text("")
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self.widget("snapshot-new-ok").grab_focus()
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self.widget("snapshot-new-status-text").set_text(self.vm.run_status())
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self.widget("snapshot-new-status-icon").set_from_icon_name(
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self.vm.run_status_icon_name(), Gtk.IconSize.BUTTON)
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sn = self._get_screenshot()
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uiutil.set_grid_row_visible(
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self.widget("snapshot-new-screenshot"), bool(sn))
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if sn:
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self.widget("snapshot-new-screenshot").set_from_pixbuf(sn)
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def _snapshot_new_name_changed(self, src):
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self.widget("snapshot-new-ok").set_sensitive(bool(src.get_text()))
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def _new_finish_cb(self, error, details, newname):
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self.reset_finish_cursor()
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if error is not None:
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error = _("Error creating snapshot: %s") % error
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self.err.show_err(error, details=details)
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return
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self._refresh_snapshots(newname)
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def _validate_new_snapshot(self):
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name = self.widget("snapshot-new-name").get_text()
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desc = self.widget("snapshot-new-description"
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).get_buffer().get_property("text")
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try:
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newsnap = DomainSnapshot(self.vm.conn.get_backend())
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newsnap.name = name
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newsnap.description = desc or None
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newsnap.validate()
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newsnap.get_xml()
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return newsnap
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except Exception as e:
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return self.err.val_err(_("Error validating snapshot: %s") % e)
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def _get_screenshot_data_for_save(self):
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snwidget = self.widget("snapshot-new-screenshot")
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if not snwidget.is_visible():
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return None, None
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sn = snwidget.get_pixbuf()
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if not sn:
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return None, None
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mime = getattr(sn, "vmm_mimetype", None)
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sndata = getattr(sn, "vmm_sndata", None)
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return mime, sndata
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def _do_create_snapshot(self, asyncjob, xml, name, mime, sndata):
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ignore = asyncjob
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self.vm.create_snapshot(xml)
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try:
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cachedir = self.vm.get_cache_dir()
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basesn = os.path.join(cachedir, "snap-screenshot-%s" % name)
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# Remove any pre-existing screenshots so we don't show stale data
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for ext in list(mimemap.values()):
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p = basesn + "." + ext
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if os.path.exists(basesn + "." + ext):
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os.unlink(p)
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if not mime or not sndata:
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return
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filename = basesn + "." + _mime_to_ext(mime)
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logging.debug("Writing screenshot to %s", filename)
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open(filename, "wb").write(sndata)
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except Exception:
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logging.exception("Error saving screenshot")
|
|
|
|
def _create_new_snapshot(self):
|
|
snap = self._validate_new_snapshot()
|
|
if not snap:
|
|
return
|
|
|
|
xml = snap.get_xml()
|
|
name = snap.name
|
|
mime, sndata = self._get_screenshot_data_for_save()
|
|
self._snapshot_new_close()
|
|
|
|
self.set_finish_cursor()
|
|
progWin = vmmAsyncJob(
|
|
self._do_create_snapshot, [xml, name, mime, sndata],
|
|
self._new_finish_cb, [name],
|
|
_("Creating snapshot"),
|
|
_("Creating virtual machine snapshot"),
|
|
self.topwin)
|
|
progWin.run()
|
|
|
|
def _apply(self):
|
|
snaps = self._get_selected_snapshots()
|
|
if not snaps or len(snaps) > 1:
|
|
return False
|
|
|
|
snap = snaps[0]
|
|
desc_widget = self.widget("snapshot-description")
|
|
desc = desc_widget.get_buffer().get_property("text") or ""
|
|
|
|
xmlobj = snap.get_xmlobj()
|
|
origxml = xmlobj.get_xml()
|
|
xmlobj.description = desc
|
|
newxml = xmlobj.get_xml()
|
|
|
|
self.vm.log_redefine_xml_diff(snap, origxml, newxml)
|
|
if newxml == origxml:
|
|
return True
|
|
|
|
self.vm.create_snapshot(newxml, redefine=True)
|
|
snap.ensure_latest_xml()
|
|
return True
|
|
|
|
|
|
#############
|
|
# Listeners #
|
|
#############
|
|
|
|
def _popup_snapshot_menu(self, src, event):
|
|
ignore = src
|
|
if event.button != 3:
|
|
return
|
|
self._snapmenu.popup_at_pointer(event)
|
|
|
|
def _snapshot_new_close(self, *args, **kwargs):
|
|
ignore = args
|
|
ignore = kwargs
|
|
self._snapshot_new.hide()
|
|
return 1
|
|
|
|
def _description_changed(self, ignore):
|
|
snaps = self._get_selected_snapshots()
|
|
desc_widget = self.widget("snapshot-description")
|
|
desc = desc_widget.get_buffer().get_property("text") or ""
|
|
|
|
if len(snaps) == 1 and snaps[0].get_xmlobj().description != desc:
|
|
self._unapplied_changes = True
|
|
|
|
self.widget("snapshot-apply").set_sensitive(True)
|
|
|
|
def _on_apply_clicked(self, ignore):
|
|
self._apply()
|
|
self._refresh_snapshots()
|
|
|
|
def _on_new_ok_clicked(self, ignore):
|
|
return self._create_new_snapshot()
|
|
|
|
def _on_add_clicked(self, ignore):
|
|
if self._snapshot_new.is_visible():
|
|
return
|
|
self._reset_new_state()
|
|
self._snapshot_new.show()
|
|
self.widget("snapshot-new-name").grab_focus()
|
|
|
|
def _on_refresh_clicked(self, ignore):
|
|
self._refresh_snapshots()
|
|
|
|
def _on_start_clicked(self, ignore, ignore2=None, ignore3=None):
|
|
snaps = self._get_selected_snapshots()
|
|
if not snaps or len(snaps) > 1:
|
|
return
|
|
|
|
snap = snaps[0]
|
|
msg = _("Are you sure you want to run snapshot '%s'? "
|
|
"All %s changes since the last snapshot was created will be "
|
|
"discarded.")
|
|
if self.vm.is_active():
|
|
msg = msg % (snap.get_name(), _("disk"))
|
|
else:
|
|
msg = msg % (snap.get_name(), _("disk and configuration"))
|
|
|
|
result = self.err.yes_no(msg)
|
|
if not result:
|
|
return
|
|
|
|
logging.debug("Running snapshot '%s'", snap.get_name())
|
|
vmmAsyncJob.simple_async(self.vm.revert_to_snapshot,
|
|
[snap], self,
|
|
_("Running snapshot"),
|
|
_("Running snapshot '%s'") % snap.get_name(),
|
|
_("Error running snapshot '%s'") %
|
|
snap.get_name(),
|
|
finish_cb=self._refresh_snapshots)
|
|
|
|
def _on_delete_clicked(self, ignore):
|
|
snaps = self._get_selected_snapshots()
|
|
if not snaps:
|
|
return
|
|
|
|
result = self.err.yes_no(_("Are you sure you want to permanently "
|
|
"delete the selected snapshots?"))
|
|
if not result:
|
|
return
|
|
|
|
for snap in snaps:
|
|
logging.debug("Deleting snapshot '%s'", snap.get_name())
|
|
vmmAsyncJob.simple_async(snap.delete, [], self,
|
|
_("Deleting snapshot"),
|
|
_("Deleting snapshot '%s'") % snap.get_name(),
|
|
_("Error deleting snapshot '%s'") % snap.get_name(),
|
|
finish_cb=self._refresh_snapshots)
|
|
|
|
|
|
def _snapshot_selected(self, selection):
|
|
ignore = selection
|
|
snap = self._get_selected_snapshots()
|
|
if not snap:
|
|
self._set_error_page(_("No snapshot selected."))
|
|
return
|
|
if len(snap) > 1:
|
|
self._set_error_page(_("Multiple snapshots selected."))
|
|
self.widget("snapshot-start").set_sensitive(False)
|
|
self.widget("snapshot-apply").set_sensitive(False)
|
|
self.widget("snapshot-delete").set_sensitive(True)
|
|
return
|
|
|
|
try:
|
|
self._set_snapshot_state(snap[0])
|
|
except Exception as e:
|
|
logging.exception(e)
|
|
self._set_error_page(_("Error selecting snapshot: %s") % str(e))
|