/// <summary>
/// Shows the appropriate dialog (HA wizard if HA is disabled for the pool, or VM restart priority editor otherwise).
/// </summary>
/// <param name="pool">Must not be null.</param>
internal static void EditHA(Pool pool)
{
// Do nothing if there is an HA action in progress
if (HelpersGUI.FindActiveHaAction(pool.Connection) != null)
{
log.Debug("Not opening HA dialog: an HA action is in progress");
return;
}
if (!pool.Connection.IsConnected)
{
log.Debug("Not opening HA dialog: the connection to the pool is now closed");
return;
}
if (pool.ha_enabled)
{
// Show VM restart priority editor
Program.MainWindow.ShowPerConnectionWizard(pool.Connection, new EditVmHaPrioritiesDialog(pool));
}
else
{
// Show wizard to enable HA
Program.MainWindow.ShowPerConnectionWizard(pool.Connection, new HAWizard(pool));
}
}
protected override bool CanExecuteCore(SelectedItemCollection selection)
{
if (selection.Count != 1)
{
return(false);
}
Pool poolAncestor = selection[0].PoolAncestor;
if (poolAncestor == null || poolAncestor.Locked)
{
return(false);
}
if (poolAncestor.Connection == null || !poolAncestor.Connection.IsConnected)
{
return(false);
}
if (HelpersGUI.FindActiveHaAction(poolAncestor.Connection) != null)
{
return(false);
}
Host master = Helpers.GetMaster(poolAncestor.Connection);
if (master == null)
{
return(false);
}
return(true);
}
protected bool CanExecuteHACommand(SelectedItemCollection selection)
{
if (selection.Count != 1)
{
return(false);
}
Pool pool = selection[0].PoolAncestor;
if (pool == null || pool.Locked ||
pool.Connection == null || !pool.Connection.IsConnected ||
Helpers.GetMaster(pool.Connection) == null ||
HelpersGUI.FindActiveHaAction(pool.Connection) != null)
{
return(false);
}
return(CanExecute(pool));
}
protected override string GetCantExecuteReasonCore(SelectedItem item)
{
Pool poolAncestor = item.PoolAncestor;
bool inPool = poolAncestor != null;
if (inPool)
{
Host master = Helpers.GetMaster(poolAncestor.Connection);
if (master == null)
{
return(Messages.FIELD_DISABLED);
}
else if (HelpersGUI.FindActiveHaAction(poolAncestor.Connection) != null || poolAncestor.Locked)
{
return(Messages.POOL_EDIT_IN_PROGRESS);
}
}
return(base.GetCantExecuteReasonCore(item));
}
protected override bool CanExecuteCore(SelectedItemCollection selection)
{
if (selection.Count == 1)
{
Pool poolAncestor = selection[0].PoolAncestor;
bool inPool = poolAncestor != null;
if (inPool)
{
Host master = Helpers.GetMaster(poolAncestor.Connection);
if (master == null || HelpersGUI.FindActiveHaAction(poolAncestor.Connection) != null || poolAncestor.Locked)
{
return(false);
}
else
{
return(true);
}
}
}
return(false);
}
protected override string GetCantExecuteReasonCore(IXenObject item)
{
Pool pool = item == null ? null : Helpers.GetPoolOfOne(item.Connection);
if (pool == null)
{
return(Messages.POOL_GONE);
}
if (!pool.IsVisible())
{
return(Messages.HA_STANDALONE_SERVER);
}
Host master = Helpers.GetMaster(pool.Connection);
if (master == null)
{
return(Messages.POOL_MASTER_GONE);
}
if (pool.Locked)
{
return(Messages.POOL_EDIT_IN_PROGRESS);
}
var action = HelpersGUI.FindActiveHaAction(pool.Connection);
if (action != null)
{
return(string.Format(action is EnableHAAction ? Messages.HA_PAGE_ENABLING : Messages.HA_PAGE_DISABLING,
Helpers.GetName(pool.Connection)));
}
return(Messages.UNKNOWN);
}
/// <summary>
/// Rebuilds the panel contents. Must be called on the event thread.
/// </summary>
private void Rebuild()
{
Program.AssertOnEventThread();
if (!this.Visible)
{
return;
}
customListPanel.BeginUpdate();
try
{
customListPanel.ClearRows();
tableLatencies.Controls.Clear();
if (xenObject == null)
{
return;
}
AsyncAction action = HelpersGUI.FindActiveHaAction(xenObject.Connection);
if (action != null)
{
// There is an EnableHAAction or DisableHAAction in progress relating to this connection.
// Show some text and disable editing
buttonConfigure.Visible = true;
buttonConfigure.Enabled = false;
buttonEnableDisableHa.Visible = true;
buttonEnableDisableHa.Enabled = false;
pictureBoxWarningTriangle.Visible = false;
labelStatus.Text = String.Format(action is EnableHAAction ? Messages.HA_PAGE_ENABLING : Messages.HA_PAGE_DISABLING,
Helpers.GetName(xenObject.Connection));
}
else
{
// Generate the tab contents depending on what XenObject we're displaying
if (pool.ha_enabled)
{
buttonEnableDisableHa.Text = Messages.DISABLE_HA_ELLIPSIS;
if (PassedRbacChecks())
{
buttonConfigure.Visible = true;
buttonConfigure.Enabled = true;
buttonEnableDisableHa.Visible = true;
buttonEnableDisableHa.Enabled = true;
pictureBoxWarningTriangle.Visible = false;
labelStatus.Text = string.Format(Messages.HA_TAB_CONFIGURED_BLURB, Helpers.GetName(pool).Ellipsise(30));
}
else
{
buttonConfigure.Visible = false;
buttonConfigure.Enabled = false;
buttonEnableDisableHa.Visible = false;
buttonEnableDisableHa.Enabled = false;
pictureBoxWarningTriangle.Visible = true;
labelStatus.Text = String.Format(Messages.RBAC_HA_TAB_WARNING,
Role.FriendlyCSVRoleList(Role.ValidRoleList(HA_PERMISSION_CHECKS, pool.Connection)),
Role.FriendlyCSVRoleList(pool.Connection.Session.Roles));
}
}
else
{
buttonEnableDisableHa.Text = Messages.ENABLE_HA_ELLIPSIS;
buttonConfigure.Visible = true;
buttonConfigure.Enabled = true;
buttonEnableDisableHa.Visible = false;
buttonEnableDisableHa.Enabled = true;
pictureBoxWarningTriangle.Visible = false;
labelStatus.Text = String.Format(Messages.HAPANEL_BLURB, Helpers.GetName(pool).Ellipsise(30));
}
if (xenObject is SR)
{
// Currently unused
SR sr = (SR)xenObject;
generateSRHABox(sr);
}
else if (xenObject is Pool)
{
generatePoolHABox(pool);
tableLayoutPanel1.AutoScrollMinSize = new Size(0, tableLatencies.Height + customListPanel.Height);
}
}
}
finally
{
customListPanel.EndUpdate();
}
}
/// <summary>
/// Rebuilds the panel contents. Must be called on the event thread.
/// </summary>
private void Rebuild()
{
Program.AssertOnEventThread();
if (!this.Visible)
{
return;
}
customListPanel.BeginUpdate();
try
{
customListPanel.ClearRows();
tableLatencies.Controls.Clear();
if (xenObject == null)
{
return;
}
buttonConfigure.Command = new HAConfigureCommand(Program.MainWindow, xenObject.Connection);
buttonDisableHa.Command = new HADisableCommand(Program.MainWindow, xenObject.Connection);
AsyncAction action = HelpersGUI.FindActiveHaAction(xenObject.Connection);
if (action != null)
{
// There is an EnableHAAction or DisableHAAction in progress relating to this connection.
labelStatus.Text = String.Format(action is EnableHAAction ? Messages.HA_PAGE_ENABLING : Messages.HA_PAGE_DISABLING,
Helpers.GetName(xenObject.Connection));
}
else
{
//CA-250234 no need to rebuild HA page if we lost connection to the pool
if (pool.Connection?.Session == null || !pool.Connection.IsConnected)
{
return;
}
if (pool.ha_enabled)
{
buttonConfigure.Visible = buttonDisableHa.Visible = true;
labelStatus.Text = string.Format(Messages.HA_TAB_CONFIGURED_BLURB, Helpers.GetName(pool).Ellipsise(30));
}
else
{
buttonDisableHa.Visible = false;
labelStatus.Text = String.Format(Messages.HAPANEL_BLURB, Helpers.GetName(pool).Ellipsise(30));
}
if (xenObject is SR sr)
{
// Currently unused
generateSRHABox(sr);
}
else if (xenObject is Pool)
{
generatePoolHABox(pool);
tableLayoutPanel1.AutoScrollMinSize = new Size(0, tableLatencies.Height + customListPanel.Height);
}
}
}
finally
{
customListPanel.EndUpdate();
}
}