mirror of
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499 lines
21 KiB
C#
499 lines
21 KiB
C#
/* Copyright (c) Citrix Systems, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms,
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* with or without modification, are permitted provided
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* that the following conditions are met:
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*
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* * Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the
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* following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Linq;
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using XenAPI;
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using System.Windows.Forms;
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using XenAdmin.Actions;
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using XenAdmin.Core;
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using XenAdmin.Commands.Controls;
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using XenAdmin.Dialogs;
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namespace XenAdmin.Commands
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{
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class DeleteVirtualDiskCommand : Command
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{
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/// <summary>
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/// Allows auto unplug and delete on running VMs
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/// </summary>
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public bool AllowRunningVMDelete = false;
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/// <summary>
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/// Allows deletion of the VDI when multiple VMs are using this VDI. If the VMs are running you also need to set AllowRunningVMDelete
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/// </summary>
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public bool AllowMultipleVBDDelete = false;
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public DeleteVirtualDiskCommand(IMainWindow mainWindow, IEnumerable<SelectedItem> selection)
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: base(mainWindow, selection)
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{
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}
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public override string ContextMenuText
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{
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get
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{
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var selection = GetSelection();
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if (selection.Count > 1)
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return Messages.MAINWINDOW_DELETE_OBJECTS;
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return selection.AsXenObjects<VDI>().All(v => v.is_a_snapshot)
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? Messages.DELETE_SNAPSHOT_MENU_ITEM
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: Messages.DELETE_VIRTUAL_DISK;
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}
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}
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protected override bool CanExecuteCore(SelectedItemCollection selection)
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{
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return selection.AllItemsAre<VDI>(CanExecute);
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}
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protected override bool ConfirmationRequired
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{
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get
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{
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// We always do some sort of confirmation for this delete
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return true;
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}
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}
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protected override string ConfirmationDialogText
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{
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get
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{
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if (!NeedMultipleWarnings)
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{
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// In the single warning type case we use the in built confirmation dialog to show a single warning
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// if there are mixed vdi types then we will use the multiple warning dialog in confirm() override
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SelectedItemCollection selectedItems = GetSelection();
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VDI vdi = selectedItems[0].XenObject as VDI;
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SR sr = vdi.Connection.Resolve<SR>(vdi.SR);
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bool single = selectedItems.Count == 1;
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var typ = vdi.VDIType();
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switch (typ)
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{
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case VDI.FriendlyType.SNAPSHOT:
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return single ? Messages.MESSAGEBOX_DELETE_SNAPSHOT : Messages.MESSAGEBOX_DELETE_SNAPSHOT_MULTIPLE;
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case VDI.FriendlyType.ISO:
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return single ? string.Format(Messages.MESSAGEBOX_DELETE_ISO, Helpers.GetName(vdi)) : Messages.MESSAGEBOX_DELETE_ISO_MULTIPLE;
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case VDI.FriendlyType.SYSTEM_DISK:
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return single ? Messages.MESSAGEBOX_DELETE_SYS_DISK : Messages.MESSAGEBOX_DELETE_SYS_DISK_MULTIPLE;
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case VDI.FriendlyType.VIRTUAL_DISK:
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return single ? Messages.MESSAGEBOX_DELETE_VD : Messages.MESSAGEBOX_DELETE_VD_MULTIPLE;
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case VDI.FriendlyType.NONE:
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return "";
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}
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}
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return base.ConfirmationDialogText;
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}
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}
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protected override string ConfirmationDialogTitle
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{
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get
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{
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if (!NeedMultipleWarnings)
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{
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// In the single warning type case we use the in built confirmation dialog to show a single warning
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// if there are mixed vdi types then we will use the multiple warning dialog in confirm() override
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SelectedItemCollection selectedItems = GetSelection();
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VDI vdi = selectedItems[0].XenObject as VDI;
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bool single = selectedItems.Count == 1;
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var typ = vdi.VDIType();
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switch (typ)
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{
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case VDI.FriendlyType.SNAPSHOT:
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return single ? Messages.MESSAGEBOX_DELETE_SNAPSHOT_TITLE : Messages.MESSAGEBOX_DELETE_SNAPSHOTS_TITLE_MULTIPLE;
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case VDI.FriendlyType.ISO:
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return single ? Messages.MESSAGEBOX_DELETE_ISO_TITLE : Messages.MESSAGEBOX_DELETE_ISO_TITLE_MULTIPLE;
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case VDI.FriendlyType.SYSTEM_DISK:
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return single ? Messages.MESSAGEBOX_DELETE_SYS_DISK_TITLE : Messages.MESSAGEBOX_DELETE_SYS_DISK_TITLE_MULTIPLE;
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case VDI.FriendlyType.VIRTUAL_DISK:
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return single ? Messages.MESSAGEBOX_DELETE_VD_TITLE : Messages.MESSAGEBOX_DELETE_VD_TITLE_MUTLIPLE;
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case VDI.FriendlyType.NONE:
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return "";
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}
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}
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return base.ConfirmationDialogTitle;
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}
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}
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private bool? _needMultipleWarnings = null;
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private bool NeedMultipleWarnings
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{
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get
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{
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// While just O(n) it does cast an entire list, so we cache the first result.
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if (_needMultipleWarnings.HasValue)
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return _needMultipleWarnings.Value;
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_needMultipleWarnings = false;
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SelectedItemCollection selection = GetSelection();
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VDI.FriendlyType current = VDI.FriendlyType.NONE;
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VDI.FriendlyType previous = VDI.FriendlyType.NONE;
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if (selection.Count > 1)
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{
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for (int i = 0; i < selection.Count; i++)
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{
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VDI v = selection[i].XenObject as VDI;
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if (v == null)
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current = VDI.FriendlyType.NONE;
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else
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current = v.VDIType();
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if (i > 0 && current != previous)
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{
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_needMultipleWarnings = true;
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break;
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}
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previous = current;
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}
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}
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return _needMultipleWarnings.Value;
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}
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}
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protected override bool Confirm()
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{
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if (Program.RunInAutomatedTestMode)
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return true;
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if (NeedMultipleWarnings)
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{
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MultipleWarningDialog warningDialog = new MultipleWarningDialog(
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Messages.MESSAGEBOX_DELETE_VD_TITLE_MUTLIPLE,
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Messages.MULTI_VDI_DELETE_WARNING,
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Messages.DELETE_ALL_BUTTON_LABEL);
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SelectedItemCollection selectedItems = GetSelection();
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List<VDI> snapshots = new List<VDI>();
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List<VDI> isos = new List<VDI>();
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List<VDI> systemVDisks = new List<VDI>();
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List<VDI> virtualDisks = new List<VDI>();
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foreach (VDI vdi in selectedItems.AsXenObjects<VDI>())
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{
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var typ = vdi.VDIType();
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switch (typ)
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{
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case VDI.FriendlyType.SNAPSHOT:
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snapshots.Add(vdi);
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break;
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case VDI.FriendlyType.ISO:
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isos.Add(vdi);
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break;
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case VDI.FriendlyType.SYSTEM_DISK:
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systemVDisks.Add(vdi);
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break;
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case VDI.FriendlyType.VIRTUAL_DISK:
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virtualDisks.Add(vdi);
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break;
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case VDI.FriendlyType.NONE:
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break;
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}
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}
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if (snapshots.Count == 1)
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{
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warningDialog.AddWarningMessage(
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Messages.MESSAGEBOX_DELETE_SNAPSHOT_TITLE,
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Messages.WARNING_DELETE_SNAPSHOT,
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snapshots.ConvertAll<IXenObject>(delegate(VDI v){return (IXenObject)v;}));
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}
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else if (snapshots.Count > 1)
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{
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warningDialog.AddWarningMessage(
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Messages.MESSAGEBOX_DELETE_SNAPSHOTS_TITLE_MULTIPLE,
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Messages.WARNING_DELETE_SNAPSHOT_MULTIPLE,
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snapshots.ConvertAll<IXenObject>(delegate(VDI v){return (IXenObject)v;}));
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}
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if (isos.Count == 1)
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{
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warningDialog.AddWarningMessage(
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Messages.MESSAGEBOX_DELETE_ISO_TITLE,
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Messages.WARNING_DELETE_ISO,
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isos.ConvertAll<IXenObject>(delegate(VDI v) { return (IXenObject)v; }));
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}
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else if (isos.Count > 1)
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{
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warningDialog.AddWarningMessage(
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Messages.MESSAGEBOX_DELETE_ISO_TITLE_MULTIPLE,
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Messages.WARNING_DELETE_ISO_MULTIPLE,
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isos.ConvertAll<IXenObject>(delegate(VDI v) { return (IXenObject)v; }));
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}
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if (systemVDisks.Count == 1)
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{
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warningDialog.AddWarningMessage(
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Messages.MESSAGEBOX_DELETE_SYS_DISK_TITLE,
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Messages.WARNING_DELETE_SYS_DISK,
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systemVDisks.ConvertAll<IXenObject>(delegate(VDI v) { return (IXenObject)v; }));
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}
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else if (systemVDisks.Count > 1)
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{
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warningDialog.AddWarningMessage(
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Messages.MESSAGEBOX_DELETE_SYS_DISK_TITLE_MULTIPLE,
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Messages.WARNING_DELETE_SYS_DISK_MULTIPLE,
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systemVDisks.ConvertAll<IXenObject>(delegate(VDI v) { return (IXenObject)v; }));
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}
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if (virtualDisks.Count == 1)
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{
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warningDialog.AddWarningMessage(
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Messages.MESSAGEBOX_DELETE_VD_TITLE,
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Messages.WARNING_DELETE_VD,
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virtualDisks.ConvertAll<IXenObject>(delegate(VDI v) { return (IXenObject)v; }));
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}
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else if (virtualDisks.Count > 1)
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{
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warningDialog.AddWarningMessage(
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Messages.MESSAGEBOX_DELETE_VD_TITLE_MUTLIPLE,
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Messages.WARNING_DELETE_VD_MULTIPLE,
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virtualDisks.ConvertAll<IXenObject>(delegate(VDI v) { return (IXenObject)v; }));
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}
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return warningDialog.ShowDialog(Parent) == DialogResult.Yes;
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}
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else
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{
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return base.Confirm();
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}
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}
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protected bool CanExecute(VDI vdi)
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{
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if (vdi == null)
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return false;
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SR sr = vdi.Connection.Resolve<SR>(vdi.SR);
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if (sr == null)
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return false;
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if (vdi.Locked)
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return false;
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if (sr.Physical())
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return false;
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if (sr.IsToolsSR())
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return false;
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if (vdi.IsUsedByHA())
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{
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return false;
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}
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List<VBD> vbds = vdi.Connection.ResolveAll<VBD>(vdi.VBDs);
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if (vbds.Count > 1 && !AllowMultipleVBDDelete)
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return false;
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foreach (VBD vbd in vbds)
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{
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VM vm = vdi.Connection.Resolve<VM>(vbd.VM);
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if (vdi.type == vdi_type.system)
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{
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if (vm.power_state == vm_power_state.Running)
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return false;
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}
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if (vbd.Locked)
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return false;
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if (vbd.currently_attached)
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{
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//Check if we can unplug
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DeactivateVBDCommand cmd = new DeactivateVBDCommand(Program.MainWindow, vbd);
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if (!AllowRunningVMDelete || !cmd.CanExecute())
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return false;
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}
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}
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if (sr.HBALunPerVDI())
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return true;
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if (!vdi.allowed_operations.Contains(vdi_operations.destroy))
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{
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if (AllowRunningVMDelete)
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{
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// We deliberately DONT call allowed operations because we assume we know better :)
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// Xapi will think we can't delete because VBDs are plugged. We are going to unplug them.
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// Known risks of this method that will make us fail because we are disrespecting xapi:
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// - someone else is calling a delete on this vdi already, altering the allowed ops
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// - the storage manager cannot perform a delete on the SR due to drivers
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return true;
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}
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return false;
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}
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return true;
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}
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protected override string GetCantExecuteReasonCore(IXenObject item)
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{
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VDI vdi = item as VDI;
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if (vdi == null)
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return base.GetCantExecuteReasonCore(item);
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SR sr = vdi.Connection.Resolve<SR>(vdi.SR);
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if (sr == null)
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return Messages.SR_COULD_NOT_BE_CONTACTED;
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VDI.FriendlyType vdiType = vdi.VDIType();
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if (vdi.Locked)
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return vdiType == VDI.FriendlyType.SNAPSHOT ? Messages.CANNOT_DELETE_SNAPSHOT_IN_USE
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: vdiType == VDI.FriendlyType.ISO ? Messages.CANNOT_DELETE_ISO_IN_USE
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: Messages.CANNOT_DELETE_VD_IN_USE;
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if (sr.Physical())
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return FriendlyErrorNames.VDI_IS_A_PHYSICAL_DEVICE;
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if (sr.IsToolsSR())
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return Messages.CANNOT_DELETE_TOOLS_SR;
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if (vdi.IsUsedByHA())
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return Messages.CANNOT_DELETE_HA_VD;
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if (vdi.IsMetadataForDR())
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return Messages.CANNOT_DELETE_DR_VD;
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List<VBD> vbds = vdi.Connection.ResolveAll<VBD>(vdi.VBDs);
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if (vbds.Count > 1 && !AllowMultipleVBDDelete)
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return Messages.CANNOT_DELETE_VDI_MULTIPLE_VBDS;
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foreach (VBD vbd in vbds)
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{
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VM vm = vdi.Connection.Resolve<VM>(vbd.VM);
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if (vdiType == VDI.FriendlyType.SYSTEM_DISK)
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{
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if (vm.power_state == vm_power_state.Running)
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return string.Format(
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Messages.CANNOT_DELETE_IN_USE_SYS_VD,
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Helpers.GetName(vm).Ellipsise(20));
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}
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if (vbd.Locked)
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return vdiType == VDI.FriendlyType.SNAPSHOT ? Messages.CANNOT_DELETE_SNAPSHOT_IN_USE
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: vdiType == VDI.FriendlyType.ISO ? Messages.CANNOT_DELETE_ISO_IN_USE
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: Messages.CANNOT_DELETE_VD_IN_USE;
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if (vbd.currently_attached)
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{
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if (!AllowRunningVMDelete)
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{
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return string.Format(Messages.CANNOT_DELETE_VDI_ACTIVE_ON,
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Helpers.GetName(vm).Ellipsise(20));
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}
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DeactivateVBDCommand cmd = new DeactivateVBDCommand(Program.MainWindow, vbd);
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if (!cmd.CanExecute())
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{
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var reasons = cmd.GetCantExecuteReasons();
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return reasons.Count > 0
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? string.Format(Messages.CANNOT_DELETE_CANNOT_DEACTIVATE_REASON,
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Helpers.GetName(vm).Ellipsise(20), reasons.ElementAt(0).Value)
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: Messages.UNKNOWN;
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}
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}
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}
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// This is a necessary final check, there are other blocking reasons non covered in this method
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// Known examples:
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// - someone else is calling a delete on this vdi already, altering the allowed ops
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// - the storage manager cannot perform a delete on the SR due to drivers
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if (!vdi.allowed_operations.Contains(vdi_operations.destroy))
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return vdiType == VDI.FriendlyType.SNAPSHOT ? Messages.CANNOT_DELETE_SNAPSHOT_GENERIC
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: vdiType == VDI.FriendlyType.ISO ? Messages.CANNOT_DELETE_ISO_GENERIC
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: Messages.CANNOT_DELETE_VD_GENERIC;
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return base.GetCantExecuteReasonCore(item);
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}
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protected override CommandErrorDialog GetErrorDialogCore(IDictionary<IXenObject, string> cantExecuteReasons)
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{
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return new CommandErrorDialog(Messages.ERROR_DESTROYING_STORAGE_ITEMS_TITLE, Messages.ERROR_DESTROYING_STORAGE_ITEMS_MESSAGE, cantExecuteReasons);
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}
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protected override void ExecuteCore(SelectedItemCollection selection)
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{
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List<AsyncAction> actionsToComplete = new List<AsyncAction>();
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List<VM> deletedVMSnapshots = new List<VM>();
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foreach (VDI vdi in selection.AsXenObjects<VDI>())
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{
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if (vdi.Locked || !vdi.Show(XenAdmin.Properties.Settings.Default.ShowHiddenVMs))
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continue;
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actionsToComplete.AddRange(getDestroyVDIAction(vdi, deletedVMSnapshots));
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}
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if (actionsToComplete.Count == 0)
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return;
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if (actionsToComplete.Count > 1)
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RunMultipleActions(actionsToComplete, Messages.ACTION_DELETING_MULTIPLE_STORAGE_ITEMS_TITLE, Messages.ACTION_DELETING_MULTIPLE_STORAGE_ITEMS_STATUS, Messages.COMPLETED, true);
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else
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actionsToComplete[0].RunAsync();
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}
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private List<AsyncAction> getDestroyVDIAction(VDI vdi, List<VM> deletedVMSnapshots)
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{
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List<AsyncAction> actions = new List<AsyncAction>();
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// Destroy the entire snapshot if it exists. Else destroy disk
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if (vdi.is_a_snapshot && vdi.GetVMs().Count >= 1)
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{
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foreach (VM vm in vdi.GetVMs())
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{
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if (!vm.is_a_snapshot || deletedVMSnapshots.Contains(vm))
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continue;
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AsyncAction action = new VMSnapshotDeleteAction(vm);
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actions.Add(action);
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deletedVMSnapshots.Add(vm);
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}
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}
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else
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{
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SR sr = vdi.Connection.Resolve(vdi.SR);
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if (sr == null)
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{
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// Nothing we can do here, but this should have been caught in the getcantexecutereason method and prompted
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return actions;
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}
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DestroyDiskAction a = new DestroyDiskAction(vdi);
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a.AllowRunningVMDelete = AllowRunningVMDelete;
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actions.Add(a);
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}
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return actions;
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}
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}
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}
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