private static void DeletePerformanceCounterCategory(PerfCounter perfCounter)
{
if (PerformanceCounterCategory.Exists(perfCounter.CategoryName))
{
PerformanceCounterCategory.Delete(perfCounter.CategoryName);
}
}
private static void CreatePerformanceCounterCategory(PerfCounter perfCounter)
{
//Logger logger = new Logger(@"OpticUtil.log");
//logger.WriteEntry("CreatePerformanceCounterCategory begin.", "Info", "OpticUtil");
if (!PerformanceCounterCategory.Exists(perfCounter.CategoryName))
{
CounterCreationDataCollection counterData = new CounterCreationDataCollection();
CounterCreationData counter;
//We need to add all possible counter names even if they wont be utilized by the user because once the category is created we can't
//go back and add an additional counter.
var counterNames = GetCounterNames();
foreach (CounterNameClass counterNameClass in counterNames)
{
counter = new CounterCreationData();
counter.CounterName = counterNameClass.CounterName;
counter.CounterType = counterNameClass.CounterType;
counter.CounterHelp = counterNameClass.CounterHelp;
counterData.Add(counter);
}
// Create the category and pass the collection to it.
PerformanceCounterCategory.Create(perfCounter.CategoryName, perfCounter.CategoryHelp, perfCounter.CategoryType, counterData);
}
//logger.WriteEntry("CreatePerformanceCounterCategory end.", "Info", "OpticUtil");
//logger.LoggerClose();
}
private static void ResetPerformanceCounter(PerfCounter perfCounter, int value)
{
PerformanceCounter myCounter =
new PerformanceCounter(
perfCounter.CategoryName,
perfCounter.CounterName,
perfCounter.CounterInstanceName,
false);
myCounter.RawValue = value;
}
private static long GetPerformanceCounter(PerfCounter perfCounter)
{
PerformanceCounter myCounter;
myCounter = new PerformanceCounter(perfCounter.CategoryName, perfCounter.CounterName, perfCounter.CounterInstanceName, true);
//Todo: Find solution to getting counters correctly
//CounterSample cs = myCounter.NextSample();
//cs.RawValue
//Get the value twice, The first iteration of he counter will always be 0, because it has nothing to compare to the last value.
float nextValue = 0;
for(int i = 0; i < 10; i++)
{
nextValue = myCounter.NextValue();
if(nextValue > 0)
{
break;
}
System.Threading.Thread.Sleep((i + 1) * 10);
}
return (long)nextValue; //Losing the decimal place here, but havent figured out how to marshall float back to LR
}
/// <summary>
/// Accepts Category name and instance name
/// Note, we dont need the counter name because they are pre-defined
/// User passes in a path in this format
/// "HP LoadRunner Performance"
/// "\\HP LoadRunner Performance"
/// "\\HP LoadRunner Performance(My Web Service)"
/// "HP LoadRunner Performance(My Web Service)"
/// "HP LoadRunner Performance(<computername> My Web Service)"
/// </summary>
private static PerfCounter ParseCounterPath(string performanceCounter, bool restrictCounterName)
{
var perfCounter = new PerfCounter();
string[] perfCounterParts = performanceCounter
.Split(new char[] { '\\' }, StringSplitOptions.RemoveEmptyEntries);
//CategoryName
perfCounter.CategoryName = perfCounterParts[0]
.Split(new char[] { '(' }, StringSplitOptions.RemoveEmptyEntries)[0];
if (perfCounterParts[0].Contains("(") && perfCounterParts[0].Contains(")"))
{
//InstanceName
perfCounter.CounterInstanceName = perfCounterParts[0]
.Split(new char[] { '(' }, StringSplitOptions.RemoveEmptyEntries)[1]
.Split(new char[] { ')' }, StringSplitOptions.RemoveEmptyEntries)[0];
//If user wants the computername added to the instance name they can just add the following:
// <computername> myinstancename
var index = perfCounter.CounterInstanceName.IndexOf("<computername>");
if (index >= 0)
{
perfCounter.CounterInstanceName = perfCounter.CounterInstanceName.Replace("<computername>", System.Net.Dns.GetHostName());
}
if (perfCounterParts.Length == 2)
{
perfCounter.CounterName = perfCounterParts[1];
switch (perfCounter.CounterName.ToLower())
{
case "numberofitems":
case "count":
perfCounter.CounterType = PerformanceCounterType.NumberOfItems32;
break;
case "rateofcountspersecond":
case "rate/sec":
perfCounter.CounterType = PerformanceCounterType.RateOfCountsPerSecond32;
break;
case "averagetimer":
case "average":
perfCounter.CounterType = PerformanceCounterType.AverageTimer32;
break;
default:
if (restrictCounterName)
{
throw new Exception(string.Format("Counter name : \"{0}\" not understood. Please use \"Count\", \"Rate/Sec\", or \"Average\".", perfCounter.CounterName));
}
break;
}
}
else
{
throw new Exception(string.Format("Counter instance \"{0}\" provided but name not specified.", perfCounter.CounterInstanceName));
}
}
//Both of these are hard coded
perfCounter.CounterHelp = "OpticUtil Counter help.";
perfCounter.CategoryHelp = "OpticUtil Category help.";
perfCounter.CategoryType = PerformanceCounterCategoryType.MultiInstance;
return perfCounter;
}
private static void IncrementPerformanceCounter(PerfCounter perfCounter, double value)
{
PerformanceCounter myCounter;
myCounter = new PerformanceCounter(perfCounter.CategoryName, perfCounter.CounterName, perfCounter.CounterInstanceName, false);
myCounter.IncrementBy((long)value);
}