private void Repopulate()
{
if (_XenObject == null)
{
return;
}
try
{
var perfmonDefinitions = PerfmonDefinition.GetPerfmonDefinitions(_XenObject);
for (int i = 0; i < perfmonDefinitions.Length; i++)
{
PerfmonDefinition perfmonDefinition = perfmonDefinitions[i];
if (perfmonDefinition.IsCPUUsage)
{
cpuAlert.Populate(perfmonDefinition);
}
else if (perfmonDefinition.IsNetworkUsage)
{
netAlert.Populate(perfmonDefinition);
}
else if (perfmonDefinition.IsDiskUsage)
{
diskAlert.Populate(perfmonDefinition);
}
else if (perfmonDefinition.IsMemoryUsage)
{
memoryAlert.Populate(perfmonDefinition);
}
else if (perfmonDefinition.IsSrUsage)
{
srAlert.Populate(perfmonDefinition);
}
else if (perfmonDefinition.IsDom0MemoryUsage)
{
dom0MemoryAlert.Populate(perfmonDefinition);
}
else if (perfmonDefinition.IsSrPhysicalUtilisation)
{
physicalUtilisationAlert.Populate(perfmonDefinition);
}
}
}
catch { }
}
protected override void Run()
{
if (xo == null)
{
return;
}
Host theHost = xo as Host;
// Dom0 Memory usage alert is an exception. While configuration for all the alerts (eg. related to the Host) have to be saved to this "xo",
// dom0 Memory usage's has to be in the Dom0's other config.
//
var dom0_memory_usage = perfmonDefinitions.FirstOrDefault(d => d.IsDom0MemoryUsage);
if (dom0_memory_usage != null)
{
perfmonDefinitions.Remove(dom0_memory_usage);
var dom0Vm = theHost == null ? null : theHost.ControlDomainZero;
if (dom0Vm != null)
{
var dom0PerfmonDefinitions = PerfmonDefinition.GetPerfmonDefinitions(dom0Vm).ToList();
bool found = false;
for (int ii = 0; ii < dom0PerfmonDefinitions.Count; ii++)
{
var pmd = dom0PerfmonDefinitions[ii];
if (pmd != null && pmd.IsDom0MemoryUsage)
{
dom0PerfmonDefinitions[ii] = dom0_memory_usage;
found = true;
break;
}
}
if (!found)
{
dom0PerfmonDefinitions.Add(dom0_memory_usage);
}
string dom0PerfmonConfigXML = PerfmonDefinition.GetPerfmonDefinitionXML(dom0PerfmonDefinitions);
Helpers.SetOtherConfig(Session, dom0Vm, PerfmonDefinition.PERFMON_KEY_NAME, dom0PerfmonConfigXML);
}
}
else
{
var dom0Vm = theHost == null ? null : theHost.ControlDomainZero;
if (dom0Vm != null)
{
var dom0PerfmonDefinitions = PerfmonDefinition.GetPerfmonDefinitions(dom0Vm).ToList();
int found = dom0PerfmonDefinitions.RemoveAll(d => d.IsDom0MemoryUsage);
if (found > 0)
{
string dom0PerfmonDefinitionsXml = PerfmonDefinition.GetPerfmonDefinitionXML(dom0PerfmonDefinitions);
Helpers.SetOtherConfig(Session, dom0Vm, PerfmonDefinition.PERFMON_KEY_NAME, dom0PerfmonDefinitionsXml);
}
}
}
if (perfmonDefinitions == null || perfmonDefinitions.Count == 0)
{
Helpers.RemoveFromOtherConfig(Session, xo, PerfmonDefinition.PERFMON_KEY_NAME);
}
else
{
string perfmonConfigXML = PerfmonDefinition.GetPerfmonDefinitionXML(perfmonDefinitions);
Helpers.SetOtherConfig(Session, xo, PerfmonDefinition.PERFMON_KEY_NAME, perfmonConfigXML);
}
var hosts = new List <Host>();
if (theHost == null)
{
VM vm = xo as VM;
if (vm == null)
{
SR sr = xo as SR;
if (sr != null)
{
foreach (var pbdRef in sr.PBDs)
{
PBD pbd = sr.Connection.Resolve(pbdRef);
if (pbd == null)
{
continue;
}
var host = pbd.Connection.Resolve(pbd.host);
if (host != null)
{
hosts.Add(host);
}
}
}
}
else
{
var host = vm.Home();
if (host != null)
{
hosts.Add(host);
}
}
}
else
{
hosts.Add(theHost);
}
foreach (var host in hosts)
{
try
{
//NB The refresh causes the server to re-read the configuration
//immediately. But even if the refresh fails, the change will be
//noticed, just a bit later.
new ExecutePluginAction(host.Connection, host,
XenServerPlugins.PLUGIN_PERFMON_PLUGIN,
XenServerPlugins.PLUGIN_PERFMON_FUNCTION_REFRESH,
new Dictionary <string, string>(), true).RunExternal(Session);
}
catch (Exception e)
{
// Handle perfmon randomly being stopped
if (e.Message.StartsWith(XenServerPlugins.PLUGIN_PERFMON_ERROR_NOT_RUNNING))
{
// start perfmon and try again
try
{
new ExecutePluginAction(host.Connection, host,
XenServerPlugins.PLUGIN_PERFMON_PLUGIN,
XenServerPlugins.PLUGIN_PERFMON_FUNCTION_START,
new Dictionary <string, string>(), true).RunExternal(Session);
new ExecutePluginAction(host.Connection, host,
XenServerPlugins.PLUGIN_PERFMON_PLUGIN,
XenServerPlugins.PLUGIN_PERFMON_FUNCTION_REFRESH,
new Dictionary <string, string>(), true).RunExternal(Session);
}
catch (Exception ex)
{
log.DebugFormat("Perfmon refresh failed ({0}). Alerts will start being produced within half an hour.", ex.Message);
}
}
else
{
log.DebugFormat("Perfmon refresh failed ({0}). Alerts will start being produced within half an hour.", e.Message);
}
}
}
}
private void Repopulate()
{
if (_XenObject == null)
{
return;
}
try
{
var perfmonDefinitions = PerfmonDefinition.GetPerfmonDefinitions(_XenObject);
for (int i = 0; i < perfmonDefinitions.Length; i++)
{
PerfmonDefinition perfmonDefinition = perfmonDefinitions[i];
if (perfmonDefinition.IsCPUUsage)
{
cpuAlert.Populate(perfmonDefinition);
}
else if (perfmonDefinition.IsNetworkUsage)
{
netAlert.Populate(perfmonDefinition);
}
else if (perfmonDefinition.IsDiskUsage)
{
diskAlert.Populate(perfmonDefinition);
}
else if (perfmonDefinition.IsMemoryUsage)
{
memoryAlert.Populate(perfmonDefinition);
}
else if (perfmonDefinition.IsSrUsage)
{
srAlert.Populate(perfmonDefinition);
}
else if (perfmonDefinition.IsSrPhysicalUtilisation)
{
physicalUtilisationAlert.Populate(perfmonDefinition);
}
}
}
catch (Exception ex)
{
log.Error("Unexpected error during populating controls for Alerts. Exception swallowed.", ex); //Adding this to pre-existing empty catch block to log it at least
}
// Dom0 memory usage is stored in the other_config of the Dom0 vm not on the host (or any other XenObject)
try
{
var host = _XenObject as Host;
if (host != null)
{
var dom0 = host.ControlDomainZero;
if (dom0 != null)
{
var controlDomainPerfmonDefinitions = PerfmonDefinition.GetPerfmonDefinitions(dom0);
if (controlDomainPerfmonDefinitions != null)
{
for (int i = 0; i < controlDomainPerfmonDefinitions.Length; i++)
{
var def = controlDomainPerfmonDefinitions[i];
if (def != null && def.IsDom0MemoryUsage)
{
dom0MemoryAlert.Populate(def);
}
}
}
}
}
}
catch (Exception ex)
{
log.Error("Unexpected error during populating controls for Dom0 Memory Usage alert. Exception swallowed.", ex); //Any error here will cause the controls not being populated, but they will be still usable.
}
}