mirror of
https://github.com/xcp-ng/xenadmin.git
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384 lines
13 KiB
C#
384 lines
13 KiB
C#
/* Copyright (c) Cloud Software Group, Inc.
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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.Linq;
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using XenAdmin.Core;
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using XenAPI;
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namespace XenAdmin.Controls
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{
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public class SrPickerMigrateItem : SrPickerItem
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{
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public SrPickerMigrateItem(SR sr, Host aff, VDI[] vdis)
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: base(sr, aff, vdis)
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{
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}
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protected override bool CanBeEnabled(out string cannotEnableReason)
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{
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if (IsCurrentLocation(out cannotEnableReason))
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return false;
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if (TheSR.IsLocalSR())
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{
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foreach (var vdi in ExistingVDIs)
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{
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var homeHosts = new List<Host>();
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var vms = vdi.GetVMs();
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foreach (var vm in vms)
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{
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var homeHost = vm.Home();
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if (homeHost != null)
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{
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homeHosts.Add(homeHost);
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if (!TheSR.CanBeSeenFrom(homeHost))
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{
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cannotEnableReason = vm.power_state == vm_power_state.Running
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? Messages.SRPICKER_ERROR_LOCAL_SR_MUST_BE_RESIDENT_HOSTS
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: string.Format(Messages.SR_CANNOT_BE_SEEN, Helpers.GetName(homeHost));
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return false;
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}
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}
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}
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if (homeHosts.Count == 0)
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{
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cannotEnableReason = Messages.SR_IS_LOCAL;
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return false;
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}
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}
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}
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return SupportsStorageMigration(out cannotEnableReason) &&
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SupportsVdiCreate(out cannotEnableReason) &&
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!IsDetached(out cannotEnableReason) &&
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TheSR.CanFitDisks(out cannotEnableReason, ExistingVDIs);
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}
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}
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public class SrPickerCopyItem : SrPickerItem
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{
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public SrPickerCopyItem(SR sr, Host aff, VDI[] vdis)
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: base(sr, aff, vdis)
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{
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}
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protected override bool CanBeEnabled(out string cannotEnableReason)
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{
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return !IsDetached(out cannotEnableReason) &&
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SupportsVdiCreate(out cannotEnableReason) &&
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TheSR.CanFitDisks(out cannotEnableReason, ExistingVDIs);
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}
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}
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public class SrPickerMoveItem : SrPickerItem
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{
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public SrPickerMoveItem(SR sr, Host aff, VDI[] vdis)
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: base(sr, aff, vdis)
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{
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}
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protected override bool CanBeEnabled(out string cannotEnableReason)
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{
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return !IsDetached(out cannotEnableReason) &&
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!IsCurrentLocation(out cannotEnableReason) &&
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SupportsVdiCreate(out cannotEnableReason) &&
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TheSR.CanFitDisks(out cannotEnableReason, ExistingVDIs);
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}
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}
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public class SrPickerInstallFromTemplateItem : SrPickerItem
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{
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public SrPickerInstallFromTemplateItem(SR sr, Host aff, VDI[] vdis)
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: base(sr, aff, vdis)
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{
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}
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protected override bool CanBeEnabled(out string cannotEnableReason)
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{
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return SupportsVdiCreate(out cannotEnableReason) &&
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!IsDetached(out cannotEnableReason) &&
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TheSR.CanFitDisks(out cannotEnableReason, ExistingVDIs);
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}
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}
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public class SrPickerVmItem : SrPickerItem
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{
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public SrPickerVmItem(SR sr, Host aff, VDI[] vdis)
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: base(sr, aff, vdis)
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{
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}
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protected override bool CanBeEnabled(out string cannotEnableReason)
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{
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return CanBeSeenFromAffinity(out cannotEnableReason) &&
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SupportsVdiCreate(out cannotEnableReason) &&
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!IsBroken(out cannotEnableReason) &&
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TheSR.CanFitDisks(out cannotEnableReason, ExistingVDIs);
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}
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}
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public class SrPickerLunPerVDIItem : SrPickerVmItem
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{
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public SrPickerLunPerVDIItem(SR sr, Host aff, VDI[] vdis)
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: base(sr, aff, vdis)
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{
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}
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protected override bool CanBeEnabled(out string cannotEnableReason)
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{
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if (TheSR.HBALunPerVDI())
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return CanBeSeenFromAffinity(out cannotEnableReason) &&
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!IsBroken(out cannotEnableReason);
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return base.CanBeEnabled(out cannotEnableReason);
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}
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protected override bool SupportsCurrentOperation => true;
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}
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public abstract class SrPickerItem : CustomTreeNode, IComparable<SrPickerItem>
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{
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private bool _scanning;
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public SR TheSR { get; }
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public bool Show { get; private set; } = true;
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protected readonly Host Affinity;
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protected VDI[] ExistingVDIs { get; private set; }
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public event Action<SrPickerItem> ItemUpdated;
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protected SrPickerItem(SR sr, Host aff, VDI[] vdis)
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{
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ExistingVDIs = vdis ?? Array.Empty<VDI>();
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TheSR = sr;
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Affinity = aff;
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Update();
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}
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public bool Scanning
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{
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get => _scanning;
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set
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{
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_scanning = value;
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Update();
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}
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}
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protected virtual bool SupportsCurrentOperation => !TheSR.HBALunPerVDI();
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protected abstract bool CanBeEnabled(out string cannotEnableReason);
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public void UpdateDisks(params VDI[] disks)
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{
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ExistingVDIs = disks;
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Update();
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}
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public void Update()
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{
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Text = TheSR.Name();
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Image = Images.GetImage16For(TheSR);
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if (!SupportsCurrentOperation || !SupportsVdiCreate(out _) ||
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!TheSR.Show(Properties.Settings.Default.ShowHiddenVMs))
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{
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Show = false;
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return;
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}
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if (Scanning)
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{
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Description = Messages.SR_REFRESH_ACTION_TITLE_GENERIC;
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Enabled = false;
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}
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else if (CanBeEnabled(out var cannotEnableReason))
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{
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Description = string.Format(Messages.SRPICKER_DISK_FREE, Util.DiskSizeString(TheSR.FreeSpace(), 2),
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Util.DiskSizeString(TheSR.physical_size, 2));
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Enabled = true;
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}
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else
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{
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Description = cannotEnableReason;
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Enabled = false;
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}
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ItemUpdated?.Invoke(this);
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}
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protected bool IsCurrentLocation(out string cannotEnableReason)
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{
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if (ExistingVDIs.Length > 0 && ExistingVDIs.All(vdi => vdi.SR.opaque_ref == TheSR.opaque_ref))
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{
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cannotEnableReason = Messages.CURRENT_LOCATION;
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return true;
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}
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cannotEnableReason = string.Empty;
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return false;
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}
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protected bool IsBroken(out string cannotEnableReason)
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{
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if (TheSR.IsBroken())
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{
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cannotEnableReason = Messages.SR_IS_BROKEN;
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return true;
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}
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cannotEnableReason = string.Empty;
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return false;
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}
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protected bool IsDetached(out string cannotEnableReason)
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{
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if (TheSR.IsDetached())
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{
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cannotEnableReason = Messages.SR_DETACHED;
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return true;
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}
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cannotEnableReason = string.Empty;
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return false;
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}
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protected bool SupportsVdiCreate(out string cannotEnableReason)
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{
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if (TheSR.SupportsVdiCreate())
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{
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cannotEnableReason = string.Empty;
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return true;
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}
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cannotEnableReason = Messages.STORAGE_READ_ONLY;
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return false;
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}
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protected bool SupportsStorageMigration(out string cannotEnableReason)
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{
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if (TheSR.SupportsStorageMigration())
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{
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cannotEnableReason = string.Empty;
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return true;
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}
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cannotEnableReason = Messages.UNSUPPORTED_SR_TYPE;
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return false;
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}
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protected bool CanBeSeenFromAffinity(out string cannotEnableReason)
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{
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if (Affinity == null)
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{
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if (TheSR.shared)
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{
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cannotEnableReason = string.Empty;
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return true;
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}
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cannotEnableReason = Messages.SR_IS_LOCAL;
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return false;
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}
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foreach (var pbdRef in TheSR.PBDs)
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{
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var pbd = TheSR.Connection.Resolve(pbdRef);
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if (pbd.host.opaque_ref == Affinity.opaque_ref)
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{
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if (pbd.currently_attached)
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{
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cannotEnableReason = string.Empty;
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return true;
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}
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cannotEnableReason = string.Format(Messages.SR_DETACHED_FROM_HOST, Helpers.GetName(Affinity));
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return false;
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}
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}
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cannotEnableReason = string.Format(Messages.SR_CANNOT_BE_SEEN, Helpers.GetName(Affinity));
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return false;
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}
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public int CompareTo(SrPickerItem other)
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{
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return base.CompareTo(other);
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}
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protected override int SameLevelSortOrder(CustomTreeNode other)
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{
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SrPickerItem otherItem = other as SrPickerItem;
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if (otherItem == null) //shouldn't ever happen!!!
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return -1;
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if (!otherItem.Enabled && Enabled)
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return -1;
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if (otherItem.Enabled && !Enabled)
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return 1;
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return base.SameLevelSortOrder(otherItem);
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}
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public static SrPickerItem Create(SR sr, SrPicker.SRPickerType usage, Host aff, VDI[] vdis)
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{
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switch (usage)
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{
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case SrPicker.SRPickerType.Migrate:
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return new SrPickerMigrateItem(sr, aff, vdis);
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case SrPicker.SRPickerType.Copy:
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return new SrPickerCopyItem(sr, aff, vdis);
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case SrPicker.SRPickerType.Move:
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return new SrPickerMoveItem(sr, aff, vdis);
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case SrPicker.SRPickerType.InstallFromTemplate:
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return new SrPickerInstallFromTemplateItem(sr, aff, vdis);
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case SrPicker.SRPickerType.VM:
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return new SrPickerVmItem(sr, aff, vdis);
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case SrPicker.SRPickerType.LunPerVDI:
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return new SrPickerLunPerVDIItem(sr, aff, vdis);
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default:
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throw new ArgumentException("There is no SRPickerItem for the type: " + usage);
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}
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}
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}
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}
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