mirror of
https://github.com/xcp-ng/xenadmin.git
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30c30e85bb
- Replaced the information tooltip with a warning icon and label at the bottom of the page. - Added some null checks Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>
232 lines
8.6 KiB
C#
232 lines
8.6 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.Linq;
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using System.Windows.Forms;
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using XenAPI;
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namespace XenAdmin.Controls
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{
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public partial class PvsCacheStorageRow : UserControl
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{
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public Host Host { get; private set; }
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public PVS_site PvsSite { get; private set; }
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public PVS_cache_storage OrigPvsCacheStorage { get; private set; }
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public event EventHandler Changed;
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private const decimal MIN_CACHE_SIZE_GB = 1;
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private const decimal MAX_CACHE_SIZE_GB = 2 * Util.BINARY_KILO; // 2TB
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private const decimal DEFAULT_CACHE_SIZE_GB = 10;
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private decimal origCacheSizeGb;
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public PvsCacheStorageRow(Host host, PVS_site site)
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{
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InitializeComponent();
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Host = host;
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PvsSite = site;
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OrigPvsCacheStorage = site != null ? site.PvsCacheStorage(host) : null;
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Populate();
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}
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private void Populate()
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{
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labelHostName.Text = Host.Name;
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// initialize cacheSize
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SetupCacheSizeSpinner(OrigPvsCacheStorage == null ? DEFAULT_CACHE_SIZE_GB : (decimal)Util.ToGB(OrigPvsCacheStorage.size, 1, RoundingBehaviour.Nearest),
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MIN_CACHE_SIZE_GB,
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MAX_CACHE_SIZE_GB);
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origCacheSizeGb = numericUpDownCacheSize.Value;
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PopulateCacheSrCombobox();
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ReadOnly = OrigPvsCacheStorage != null && OrigPvsCacheStorage.IsInUse;
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comboBoxCacheSr.Enabled = numericUpDownCacheSize.Enabled = !ReadOnly;
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}
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private void PopulateCacheSrCombobox()
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{
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comboBoxCacheSr.Items.Clear();
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// add the "Not configured" item first
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var notConfiguredItem = new SrComboBoxItem(null, Messages.PVS_CACHE_NOT_CONFIGURED);
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comboBoxCacheSr.Items.Add(notConfiguredItem);
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comboBoxCacheSr.SelectedItem = notConfiguredItem;
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// add Memeory SR; if no memory SR found, add a placeholder (we will create the memory SR in ConfigurePvsCacheAction)
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var memorySr =
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Host.Connection.Cache.SRs.FirstOrDefault(
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s => s.GetSRType(false) == SR.SRTypes.tmpfs && s.CanBeSeenFrom(Host));
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if (memorySr == null)
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{
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// create a placeholder for the memory SR
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memorySr = new SR
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{
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type = SR.SRTypes.tmpfs.ToString(),
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name_label = Messages.PVS_CACHE_MEMORY_SR_NAME,
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shared = false,
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opaque_ref = Helper.NullOpaqueRef
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};
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}
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var enabled = Host.dom0_memory_extra >= MIN_CACHE_SIZE_GB * Util.BINARY_GIGA;
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var label = enabled ? Messages.PVS_CACHE_MEMORY_ONLY : Messages.PVS_CACHE_MEMORY_ONLY_DISABLED;
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var memorySrItem = new SrComboBoxItem(memorySr, label, enabled);
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comboBoxCacheSr.Items.Add(memorySrItem);
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if (OrigPvsCacheStorage != null && memorySr.opaque_ref == OrigPvsCacheStorage.SR.opaque_ref)
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comboBoxCacheSr.SelectedItem = memorySrItem;
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// add all suitable SRs
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var availableSRs = Host.Connection.Cache.SRs.Where(s => s.CanBeSeenFrom(Host) && SrIsSuitableForPvsCache(s)).ToList();
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availableSRs.Sort();
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foreach (var sr in availableSRs)
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{
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var newItem = new SrComboBoxItem(sr, sr.Name);
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comboBoxCacheSr.Items.Add(newItem);
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if (OrigPvsCacheStorage != null && sr.opaque_ref == OrigPvsCacheStorage.SR.opaque_ref)
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comboBoxCacheSr.SelectedItem = newItem;
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}
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}
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private bool SrIsSuitableForPvsCache(SR sr)
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{
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return sr.Show(Properties.Settings.Default.ShowHiddenVMs) && sr.SupportsVdiCreate() && sr.FreeSpace >= MIN_CACHE_SIZE_GB * Util.BINARY_GIGA;
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}
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private void SetupCacheSizeSpinner(decimal value, decimal min, decimal max)
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{
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if (min > max)
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max = min;
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numericUpDownCacheSize.Minimum = min;
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numericUpDownCacheSize.Maximum = max;
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if (value < numericUpDownCacheSize.Minimum)
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value = numericUpDownCacheSize.Minimum;
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if (value > numericUpDownCacheSize.Maximum)
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value = numericUpDownCacheSize.Maximum;
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numericUpDownCacheSize.Value = value;
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}
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private bool _showHeader;
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public bool ShowHeader
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{
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get { return _showHeader; }
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set
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{
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_showHeader = value;
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labelCacheStorage.Visible = labelCacheSize.Visible = _showHeader;
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tableLayoutPanel1.Refresh();
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}
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}
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public SR CacheSr
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{
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get
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{
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var selectedItem = (SrComboBoxItem)comboBoxCacheSr.SelectedItem;
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return selectedItem != null ? selectedItem.Item : null;
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}
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}
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public long CacheSize
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{
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get { return (long)numericUpDownCacheSize.Value * Util.BINARY_GIGA; }
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}
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public bool ValidToSave
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{
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get { return comboBoxCacheSr.SelectedItem != null && numericUpDownCacheSize.Validate(); }
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}
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public bool HasChanged
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{
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get
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{
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if (OrigPvsCacheStorage == null)
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return CacheSr != null;
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if (CacheSr == null)
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return OrigPvsCacheStorage != null;
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return OrigPvsCacheStorage.SR.opaque_ref != CacheSr.opaque_ref || origCacheSizeGb != numericUpDownCacheSize.Value;
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}
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}
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public bool ReadOnly { get; private set; }
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private void SomethingChanged(object sender, EventArgs e)
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{
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if (Changed != null)
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Changed(this, e);
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}
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private void comboBoxCacheSr_SelectedIndexChanged(object sender, EventArgs e)
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{
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var selectedSr = CacheSr;
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if (selectedSr != null)
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{
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var maxSize = (decimal)Util.ToGB(selectedSr.GetSRType(false) == SR.SRTypes.tmpfs ? Host.dom0_memory_extra : selectedSr.FreeSpace, 1, RoundingBehaviour.Down);
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maxSize = Math.Min(maxSize, MAX_CACHE_SIZE_GB);
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if (maxSize != numericUpDownCacheSize.Maximum)
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SetupCacheSizeSpinner(numericUpDownCacheSize.Value, numericUpDownCacheSize.Minimum, maxSize);
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}
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SomethingChanged(this, e);
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}
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}
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public class SrComboBoxItem : IEnableableComboBoxItem
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{
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public SR Item;
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private readonly string _toString;
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private readonly bool _enabled;
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public SrComboBoxItem(SR sr, string label, bool enabled=true)
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{
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Item = sr;
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_toString = label;
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_enabled = enabled;
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}
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public override string ToString()
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{
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return _toString;
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}
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public bool Enabled
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{
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get { return _enabled; }
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}
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}
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}
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