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xenadmin/XenAdmin/Wizards/NewVMWizard/Page_CpuMem.cs
Konstantina Chremmou ee648135f6 Since it is easy to forget calling the base class method at the beginning of the 
PageLoaded override in derived classes, enforce it by wrapping the page specific
code in a new virtual method, which the derived classes can override and PageLoaded
can call after its own logic.

Signed-off-by: Konstantina Chremmou <konstantina.chremmou@citrix.com>
2018-03-09 11:22:26 +00:00

440 lines
17 KiB
C#
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/* Copyright (c) Citrix Systems, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms,
* with or without modification, are permitted provided
* that the following conditions are met:
*
* * Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using XenAPI;
using XenAdmin.Controls;
using XenAdmin.Controls.Ballooning;
using XenAdmin.Core;
namespace XenAdmin.Wizards.NewVMWizard
{
public partial class Page_CpuMem : XenTabPage
{
private VM Template;
int memoryMode = 1; // number of spinners to show: 1 for just "memory", 2 for "minimum" and "maximum", 3 for "static max" too
double memoryRatio = 0.0; // the permitted ratio of dynamic_min / static_max
bool initialising = true;
private bool isVcpuHotplugSupported;
// Please note that the comboBoxVCPUs control can represent two different VM properties, depending whether the VM supports vCPU hotplug or not:
// When vCPU hotplug is not supported, comboBoxVCPUs represents the initial number of vCPUs (VCPUs_at_startup). In this case we will also set the VM property VCPUs_max to the same value.
// When vCPU hotplug is supported, comboBoxVCPUs represents the maximum number of vCPUs (VCPUs_max). And the initial number of vCPUs is represented in comboBoxInitialVCPUs (which is only visible in this case)
public Page_CpuMem()
{
InitializeComponent();
}
public override string Text
{
get { return Messages.NEWVMWIZARD_CPUMEMPAGE_NAME; }
}
public override string PageTitle
{
get { return Messages.NEWVMWIZARD_CPUMEMPAGE_TITLE; }
}
public override string HelpID
{
get { return "CPU&Memory"; }
}
protected override void PageLoadedCore(PageLoadedDirection direction)
{
if (SelectedTemplate == Template)
return;
initialising = true;
Template = SelectedTemplate;
if (Template.has_ballooning() && !Helpers.FeatureForbidden(Template, Host.RestrictDMC))
memoryMode = (Template.memory_dynamic_max == Template.memory_static_max ? 2 : 3);
else
memoryMode = 1;
memoryRatio = VMMemoryControlsEdit.GetMemoryRatio(Template);
FreeSpinnerLimits();
if (memoryMode == 1)
{
spinnerDynMin.Initialize(Messages.MEMORY_COLON, null, Template.memory_static_max, Template.memory_static_max);
spinnerDynMax.Visible = spinnerStatMax.Visible = false;
}
else
{
spinnerDynMax.Visible = true;
spinnerDynMin.Initialize(Messages.DYNAMIC_MIN_COLON, null, Template.memory_dynamic_min, Template.memory_static_max);
FreeSpinnerLimits(); // same as CA-33831
spinnerDynMax.Initialize(Messages.DYNAMIC_MAX_COLON, null, Template.memory_dynamic_max, Template.memory_static_max);
if (memoryMode == 3)
{
FreeSpinnerLimits();
spinnerStatMax.Initialize(Messages.STATIC_MAX_COLON, null, Template.memory_static_max, Template.memory_static_max);
}
else
spinnerStatMax.Visible = false;
}
isVcpuHotplugSupported = Template.SupportsVcpuHotplug();
_prevVCPUsMax = Template.VCPUs_max; // we use variable in RefreshCurrentVCPUs for checking if VcpusAtStartup and VcpusMax were equal before VcpusMax changed
label5.Text = GetRubric();
InitialiseVcpuControls();
SetSpinnerLimitsAndIncrement();
ValuesUpdated();
initialising = false;
}
public override void SelectDefaultControl()
{
comboBoxVCPUs.Select();
}
private void InitialiseVcpuControls()
{
labelVCPUs.Text = isVcpuHotplugSupported
? Messages.VM_CPUMEMPAGE_MAX_VCPUS_LABEL
: Messages.VM_CPUMEMPAGE_VCPUS_LABEL;
labelInitialVCPUs.Text = Messages.VM_CPUMEMPAGE_INITIAL_VCPUS_LABEL;
labelInitialVCPUs.Visible = comboBoxInitialVCPUs.Visible = isVcpuHotplugSupported;
comboBoxTopology.Populate(Template.VCPUs_at_startup, Template.VCPUs_max, Template.GetCoresPerSocket(), Template.MaxCoresPerSocket());
PopulateVCPUs(Template.MaxVCPUsAllowed(), isVcpuHotplugSupported ? Template.VCPUs_max : Template.VCPUs_at_startup);
if (isVcpuHotplugSupported)
PopulateVCPUsAtStartup(Template.VCPUs_max, Template.VCPUs_at_startup);
}
private void PopulateVCPUComboBox(ComboBox comboBox, long min, long max, long currentValue, Predicate<long> isValid)
{
comboBox.BeginUpdate();
comboBox.Items.Clear();
for (long i = min; i <= max; ++i)
{
if (i == currentValue || isValid(i))
comboBox.Items.Add(i);
}
if (currentValue > max)
comboBox.Items.Add(currentValue);
comboBox.SelectedItem = currentValue;
comboBox.EndUpdate();
}
private void PopulateVCPUs(long maxVCPUs, long currentVCPUs)
{
PopulateVCPUComboBox(comboBoxVCPUs, 1, maxVCPUs, currentVCPUs, i => comboBoxTopology.IsValidVCPU(i));
}
private void PopulateVCPUsAtStartup(long max, long currentValue)
{
PopulateVCPUComboBox(comboBoxInitialVCPUs, 1, max, currentValue, i => true);
}
private string GetRubric()
{
StringBuilder sb = new StringBuilder();
sb.Append(Messages.NEWVMWIZARD_CPUMEMPAGE_RUBRIC);
// add hotplug text
if (isVcpuHotplugSupported)
sb.Append(Messages.VM_CPUMEMPAGE_RUBRIC_HOTPLUG);
return sb.ToString();
}
public VM SelectedTemplate { private get; set; }
// Return the larger of the template's MaxMemAllowed and the template's static max,
// to avoid crashes in the spinners (CA-40041).
private long MaxMemAllowed
{
get
{
long msm = Template.memory_static_max;
long mma = Template.MaxMemAllowed();
return (msm > mma ? msm : mma);
}
}
private void FreeSpinnerLimits()
{
long maxMemAllowed = MaxMemAllowed;
spinnerDynMin.SetRange(0, maxMemAllowed);
spinnerDynMax.SetRange(0, maxMemAllowed);
spinnerStatMax.SetRange(0, maxMemAllowed);
}
private void SetSpinnerLimitsAndIncrement()
{
spinnerDynMin.Increment = spinnerDynMax.Increment = spinnerStatMax.Increment = VMMemoryControlsEdit.CalcIncrement(Template.memory_static_max, spinnerDynMin.Units);
long maxMemAllowed = MaxMemAllowed;
double min = Template.memory_static_min;
if (memoryMode == 1)
{
spinnerDynMin.SetRange(min, maxMemAllowed);
return;
}
long min2 = (long)(SelectedMemoryStaticMax * memoryRatio);
if (min < min2)
min = min2;
double max = SelectedMemoryDynamicMax;
if (max < min)
max = min;
spinnerDynMin.SetRange(min, max);
spinnerDynMax.SetRange(SelectedMemoryDynamicMin,
memoryMode == 2 ? maxMemAllowed : SelectedMemoryStaticMax);
spinnerStatMax.SetRange(SelectedMemoryDynamicMax, maxMemAllowed);
}
public void DisableMemoryControls()
{
spinnerDynMin.Enabled = false;
spinnerDynMax.Enabled = false;
spinnerStatMax.Enabled = false;
}
public double SelectedMemoryDynamicMin
{
get
{
return spinnerDynMin.Value;
}
}
public double SelectedMemoryDynamicMax
{
get
{
return memoryMode == 1 ? spinnerDynMin.Value : spinnerDynMax.Value;
}
}
public double SelectedMemoryStaticMax
{
get
{
return
memoryMode == 1 ? spinnerDynMin.Value :
memoryMode == 2 ? spinnerDynMax.Value :
spinnerStatMax.Value;
}
}
public long SelectedVcpusMax
{
get
{
return (long)comboBoxVCPUs.SelectedItem;
}
}
public long SelectedVcpusAtStartup
{
get
{
return isVcpuHotplugSupported ? (long)comboBoxInitialVCPUs.SelectedItem : (long)comboBoxVCPUs.SelectedItem;
}
}
public long SelectedCoresPerSocket
{
get
{
return comboBoxTopology.CoresPerSocket;
}
}
public override List<KeyValuePair<string, string>> PageSummary
{
get
{
List<KeyValuePair<string, string>> sum = new List<KeyValuePair<string, string>>();
if (isVcpuHotplugSupported)
{
sum.Add(new KeyValuePair<string, string>(Messages.NEWVMWIZARD_CPUMEMPAGE_MAX_VCPUS, SelectedVcpusMax.ToString()));
sum.Add(new KeyValuePair<string, string>(Messages.NEWVMWIZARD_CPUMEMPAGE_INITIAL_VCPUS, SelectedVcpusAtStartup.ToString()));
}
else
{
sum.Add(new KeyValuePair<string, string>(Messages.NEWVMWIZARD_CPUMEMPAGE_VCPUS, SelectedVcpusAtStartup.ToString()));
}
sum.Add(new KeyValuePair<string, string>(Messages.NEWVMWIZARD_CPUMEMPAGE_TOPOLOGY, comboBoxTopology.Text));
if (memoryMode == 1)
sum.Add(new KeyValuePair<string, string>(Messages.MEMORY, Util.MemorySizeStringSuitableUnits(SelectedMemoryStaticMax, false)));
else
{
sum.Add(new KeyValuePair<string, string>(Messages.DYNAMIC_MIN, Util.MemorySizeStringSuitableUnits(SelectedMemoryDynamicMin, false)));
sum.Add(new KeyValuePair<string, string>(Messages.DYNAMIC_MAX, Util.MemorySizeStringSuitableUnits(SelectedMemoryDynamicMax, false)));
if (memoryMode == 3)
sum.Add(new KeyValuePair<string, string>(Messages.STATIC_MAX, Util.MemorySizeStringSuitableUnits(SelectedMemoryStaticMax, false)));
}
return sum;
}
}
private void ValuesUpdated()
{
CheckForError();
OnPageUpdated();
}
private void CheckForError()
{
long max_mem_total = 0;
long max_mem_free = 0;
long max_vcpus = 0;
Host max_mem_total_host = null;
Host max_mem_free_host = null;
Host max_vcpus_host = null;
foreach (Host host in Connection.Cache.Hosts)
{
long host_cpus = 0;
foreach (Host_cpu cpu in Connection.Cache.Host_cpus)
{
if (cpu.host.opaque_ref.Equals(host.opaque_ref))
host_cpus++;
}
Host_metrics metrics = Connection.Resolve(host.metrics);
if (host_cpus > max_vcpus)
{
max_vcpus = host_cpus;
max_vcpus_host = host;
}
if (metrics != null && metrics.memory_total > max_mem_total)
{
max_mem_total = metrics.memory_total;
max_mem_total_host = host;
}
// The available memory of a server is taken to be the current memory_free,
// plus however much we can squeeze down the existing VMs. This assumes
// that the overhead won't increase when we create the new VM, so it
// has false negatives.
long memory_free = host.memory_available_calc();
if (metrics != null && memory_free > max_mem_free)
{
max_mem_free = memory_free;
max_mem_free_host = host;
}
}
if (max_mem_total_host != null && SelectedMemoryDynamicMin > max_mem_total)
{
ErrorPanel.Visible = true;
ErrorLabel.Text = string.Format(Messages.NEWVMWIZARD_CPUMEMPAGE_MEMORYWARN1, Helpers.GetName(max_mem_total_host).Ellipsise(50), Util.MemorySizeStringSuitableUnits(max_mem_total, false));
}
else if (max_mem_free_host != null && SelectedMemoryDynamicMin > max_mem_free)
{
ErrorPanel.Visible = true;
ErrorLabel.Text = string.Format(Messages.NEWVMWIZARD_CPUMEMPAGE_MEMORYWARN2, Helpers.GetName(max_mem_free_host).Ellipsise(50), Util.MemorySizeStringSuitableUnits(max_mem_free, false));
}
else if (max_vcpus_host != null && SelectedVcpusMax > max_vcpus)
{
ErrorPanel.Visible = true;
ErrorLabel.Text = string.Format(Messages.NEWVMWIZARD_CPUMEMPAGE_VCPUSWARN, Helpers.GetName(max_vcpus_host).Ellipsise(50), max_vcpus);
}
else
{
ErrorPanel.Visible = false;
}
}
private void vCPU_ValueChanged(object sender, EventArgs e)
{
comboBoxTopology.Update((long)comboBoxVCPUs.SelectedItem);
ValuesUpdated();
ValidateVCPUSettings();
RefreshCurrentVCPUs();
}
private void memory_ValueChanged(object sender, EventArgs e)
{
if (initialising)
return;
SetSpinnerLimitsAndIncrement();
ValuesUpdated();
}
private void ValidateVCPUSettings()
{
if (comboBoxVCPUs.SelectedItem != null)
labelInvalidVCPUWarning.Text = VM.ValidVCPUConfiguration((long)comboBoxVCPUs.SelectedItem, comboBoxTopology.CoresPerSocket);
}
private long _prevVCPUsMax;
private void RefreshCurrentVCPUs()
{
// refresh comboBoxInitialVCPUs if it's visible and populated
if (comboBoxInitialVCPUs.Visible && comboBoxInitialVCPUs.Items.Count > 0)
{
// VcpusAtStartup is always <= VcpusMax
// So if VcpusMax is decreased below VcpusAtStartup, then VcpusAtStartup is decreased to that number too
// If VcpusAtStartup and VcpusMax are equal, and VcpusMax is changed, then VcpusAtStartup is changed to match
// But if the numbers are unequal, and VcpusMax is changed but is still higher than VcpusAtStartup, then VcpusAtStartup is unchanged
var newValue = SelectedVcpusAtStartup;
if (SelectedVcpusMax < SelectedVcpusAtStartup)
newValue = SelectedVcpusMax;
else if (SelectedVcpusAtStartup == _prevVCPUsMax && SelectedVcpusMax != _prevVCPUsMax)
newValue = SelectedVcpusMax;
PopulateVCPUsAtStartup(SelectedVcpusMax, newValue);
_prevVCPUsMax = SelectedVcpusMax;
}
}
private void comboBoxTopology_SelectedIndexChanged(object sender, EventArgs e)
{
ValidateVCPUSettings();
}
}
}
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