mirror of
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445 lines
15 KiB
C#
445 lines
15 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.ComponentModel;
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using System.Windows.Forms;
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using XenAdmin.Network;
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using XenAPI;
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using XenAdmin.Core;
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namespace XenAdmin.Controls
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{
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public partial class SrPicker : UserControl
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{
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// Migrate is the live VDI move operation
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public enum SRPickerType { VM, InstallFromTemplate, MoveOrCopy, Migrate, LunPerVDI };
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private SRPickerType usage = SRPickerType.VM;
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//Used in the MovingVDI usage
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private VDI[] existingVDIs;
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public void SetExistingVDIs(VDI[] vdis)
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{
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existingVDIs = vdis;
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}
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private IXenConnection connection;
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private Host affinity;
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private SrPickerItem LastSelectedItem;
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public event Action ItemSelectionNull;
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public event Action ItemSelectionNotNull;
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public event EventHandler DoubleClickOnRow;
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public long DiskSize = 0;
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public long? OverridenInitialAllocationRate = null;
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public SrPicker(IXenConnection connection, SRPickerType usage) : this(connection)
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{
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this.usage = usage;
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}
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private readonly CollectionChangeEventHandler SR_CollectionChangedWithInvoke;
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public SrPicker(IXenConnection connection)
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{
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this.connection = connection;
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InitializeComponent();
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srListBox.ShowCheckboxes = false;
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srListBox.ShowDescription = true;
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srListBox.ShowImages = true;
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srListBox.NodeIndent = 3;
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srListBox.SelectedIndexChanged += srListBox_SelectedIndexChanged;
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srListBox.DoubleClickOnRow += srListBox_DoubleClickOnRow;
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SrHint.Text = usage == SRPickerType.MoveOrCopy ?
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Messages.IMPORT_WIZARD_TEMPLATE_SR_HINT_TEXT :
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Messages.IMPORT_WIZARD_VM_SR_HINT_TEXT;
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Pool pool = Helpers.GetPoolOfOne(connection);
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if (pool != null)
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{
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pool.PropertyChanged -= Server_PropertyChanged;
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pool.PropertyChanged += Server_PropertyChanged;
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}
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SR_CollectionChangedWithInvoke=Program.ProgramInvokeHandler(SR_CollectionChanged);
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connection.Cache.RegisterCollectionChanged<SR>(SR_CollectionChangedWithInvoke);
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refresh();
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}
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public SrPicker()
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{
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InitializeComponent();
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SR_CollectionChangedWithInvoke = Program.ProgramInvokeHandler(SR_CollectionChanged);
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}
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public SRPickerType Usage
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{
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set { usage = value; }
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}
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/// <summary>
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/// For new disk dialog only
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/// </summary>
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public IXenConnection Connection
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{
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get
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{
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return connection;
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}
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set
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{
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if (value == null)
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return;
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connection = value;
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srListBox.ShowCheckboxes = false;
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srListBox.ShowDescription = true;
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srListBox.ShowImages = true;
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srListBox.NodeIndent = 3;
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srListBox.SelectedIndexChanged += srListBox_SelectedIndexChanged;
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srListBox.DoubleClickOnRow += srListBox_DoubleClickOnRow;
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SrHint.Text = Messages.NEW_DISK_DIALOG_SR_HINT_TEXT;
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Pool pool = Helpers.GetPoolOfOne(connection);
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if (pool != null)
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{
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pool.PropertyChanged -= Server_PropertyChanged;
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pool.PropertyChanged += Server_PropertyChanged;
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}
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connection.Cache.RegisterCollectionChanged<SR>(SR_CollectionChangedWithInvoke);
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refresh();
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}
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}
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private void srListBox_DoubleClickOnRow(object sender, EventArgs e)
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{
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if (DoubleClickOnRow != null)
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DoubleClickOnRow(sender, e);
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}
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void srListBox_SelectedIndexChanged(object sender, EventArgs e)
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{
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onItemSelect();
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}
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private void onItemSelect()
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{
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SrPickerItem item = srListBox.SelectedItem as SrPickerItem;
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if (item == null || !item.Enabled)
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{
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if (ItemSelectionNull != null)
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ItemSelectionNull();
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return;
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}
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if (ItemSelectionNotNull != null)
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ItemSelectionNotNull();
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if (!item.Enabled && LastSelectedItem != null && LastSelectedItem.TheSR.opaque_ref != item.TheSR.opaque_ref)
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srListBox.SelectedItem = LastSelectedItem;
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else if (!item.Enabled && LastSelectedItem != null && LastSelectedItem.TheSR.opaque_ref == item.TheSR.opaque_ref)
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{
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SrPickerItem first = srListBox.Items[0] as SrPickerItem;
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if (first != null && first.Enabled)
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srListBox.SelectedItem = first;
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else
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srListBox.SelectedItem = null;
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}
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else
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LastSelectedItem = item;
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}
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public SR SR
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{
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get
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{
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return srListBox.SelectedItem is SrPickerItem && (srListBox.SelectedItem as SrPickerItem).Enabled ? (srListBox.SelectedItem as SrPickerItem).TheSR : null;
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}
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}
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public SR DisabledSelectedSR
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{
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get
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{
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return srListBox.SelectedItem is SrPickerItem && !(srListBox.SelectedItem as SrPickerItem).Enabled ? (srListBox.SelectedItem as SrPickerItem).TheSR : null;
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}
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}
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public SR DefaultSR = null;
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public void SetAffinity(Host host)
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{
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affinity = host;
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refresh();
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}
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/// <summary>
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/// Returns how much disk space is required to create the disk on an SR
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/// This depends on whether the SR is thin provisioned and on what the initial allocation rate is
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/// </summary>
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/// <param name="sr"></param>
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/// <returns></returns>
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private long GetRequiredDiskSizeForSR(SR sr)
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{
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long allocationRate = DiskSize;
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if (DiskSize > sr.physical_size)
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return DiskSize;
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if (sr != null && sr.IsThinProvisioned)
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{
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if (OverridenInitialAllocationRate.HasValue)
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{
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allocationRate = OverridenInitialAllocationRate.Value;
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}
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else
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{
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long temp = 0;
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if (sr.sm_config != null && sr.sm_config.ContainsKey("initial_allocation") && long.TryParse(sr.sm_config["initial_allocation"], out temp))
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{
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allocationRate = temp;
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}
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}
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}
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return Math.Min(allocationRate, DiskSize);
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}
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private readonly SrPickerItemFactory itemFactory = new SrPickerItemFactory();
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public void refresh()
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{
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Program.AssertOnEventThread();
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SR selectedSr = SR;
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bool selected = false;
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srListBox.BeginUpdate();
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try
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{
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srListBox.ClearAllNodes();
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foreach (SR sr in connection.Cache.SRs)
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{
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SrPickerItem item = itemFactory.PickerItem(sr, usage, affinity, GetRequiredDiskSizeForSR(sr), existingVDIs);
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if (item.Show)
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srListBox.AddNode(item);
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foreach (PBD pbd in sr.Connection.ResolveAll(sr.PBDs))
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{
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if (pbd != null)
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{
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pbd.PropertyChanged -= Server_PropertyChanged;
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pbd.PropertyChanged += Server_PropertyChanged;
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}
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}
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sr.PropertyChanged -= Server_PropertyChanged;
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sr.PropertyChanged += Server_PropertyChanged;
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}
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}
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finally
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{
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srListBox.EndUpdate();
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}
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if (selectedSr != null)
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{
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foreach (SrPickerItem node in srListBox.Items)
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{
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if (node.TheSR != null && node.TheSR.uuid == selectedSr.uuid)
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{
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srListBox.SelectedItem = node;
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onItemSelect();
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selected = true;
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break;
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}
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}
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}
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if (!selected && srListBox.Items.Count > 0)
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{// If no selection made, select default SR
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if (!selectDefaultSR())
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{
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// If no default SR, select first entry in list
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srListBox.SelectedIndex = 0;
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onItemSelect();
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}
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}
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}
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public void UpdateDiskSize()
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{
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Program.AssertOnEventThread();
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try
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{
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foreach (SrPickerItem node in srListBox.Items)
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{
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node.UpdateDiskSize(GetRequiredDiskSizeForSR(node.TheSR));
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}
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}
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finally
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{
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srListBox.Refresh();
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onItemSelect();
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}
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}
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private void Server_PropertyChanged(object sender, PropertyChangedEventArgs e)
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{
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if (e.PropertyName == "name_label" || e.PropertyName == "PBDs" || e.PropertyName == "physical_utilisation" || e.PropertyName == "currently_attached" || e.PropertyName == "default_SR")
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Program.Invoke(this, refresh);
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}
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void SR_CollectionChanged(object sender, CollectionChangeEventArgs e)
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{
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Program.Invoke(this, refresh);
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}
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private void UnregisterHandlers()
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{
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if (connection == null)
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return;
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var pool = Helpers.GetPoolOfOne(connection);
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if (pool != null)
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pool.PropertyChanged -= Server_PropertyChanged;
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foreach (var sr in connection.Cache.SRs)
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{
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foreach (var pbd in sr.Connection.ResolveAll(sr.PBDs))
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{
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if (pbd != null)
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pbd.PropertyChanged -= Server_PropertyChanged;
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}
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sr.PropertyChanged -= Server_PropertyChanged;
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}
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connection.Cache.DeregisterCollectionChanged<SR>(SR_CollectionChangedWithInvoke);
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}
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/// <summary>
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/// Selects the default SR, if it exists.
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/// </summary>
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/// <returns>true if the default SR was selected, otherwise false.</returns>
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public bool selectDefaultSR()
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{
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if (DefaultSR == null)
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return false;
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foreach (SrPickerItem node in srListBox.Items)
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{
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if (node.TheSR != null && node.TheSR == DefaultSR && node.Enabled)
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{
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srListBox.SelectedItem = node;
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return true;
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}
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}
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return false;
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}
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internal void selectSRorNone(SR TheSR)
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{
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foreach (SrPickerItem node in srListBox.Items)
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{
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if (node.TheSR != null && node.TheSR.opaque_ref == TheSR.opaque_ref)
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{
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srListBox.SelectedItem = node;
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return;
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}
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}
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if (ItemSelectionNull != null)
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ItemSelectionNull();
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}
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internal void selectDefaultSROrAny()
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{
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if (selectDefaultSR())
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return;
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foreach (SrPickerItem item in srListBox.Items)
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{
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if (item == null)
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continue;
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if (item.Enabled)
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{
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selectSRorNone(item.TheSR);
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return;
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}
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}
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if (ItemSelectionNull != null)
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ItemSelectionNull();
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}
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public void selectSRorDefaultorAny(SR sr)
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{
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if (sr != null)
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{
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foreach (SrPickerItem node in srListBox.Items)
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{
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if (node.TheSR != null && node.TheSR.opaque_ref == sr.opaque_ref)
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{
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srListBox.SelectedItem = node;
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return;
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}
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}
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}
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selectDefaultSROrAny();
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}
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public bool ValidSelectionExists
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{
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get
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{
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foreach (SrPickerItem item in srListBox.Items)
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{
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if (item == null)
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continue;
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if (item.Enabled)
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{
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return true;
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}
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}
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return false;
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}
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}
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}
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}
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