/// <summary>
/// Uninstalls performance counters in the current assembly using PerfItFilterAttribute.
/// </summary>
/// <param name="installerAssembly"></param>
/// <param name="categoryName">if you have provided a categoryName for the installation, you must supply the same here</param>
public static void Uninstall(Assembly installerAssembly, string categoryName = null)
{
if (string.IsNullOrEmpty(categoryName))
{
categoryName = installerAssembly.GetName().Name;
}
var httpActionDescriptorCategoryName = PerformanceCounterApmApiFilterAttribute.GetCategoryName(categoryName);
try
{
if (PerformanceCounterCategory.Exists(httpActionDescriptorCategoryName))
{
PerformanceCounterCategory.Delete(httpActionDescriptorCategoryName);
}
}
catch (Exception ex)
{
Console.WriteLine(ex);
}
var httpClientCategoryName = PerformanceCounterApmHttpClientDelegatingHandler.GetCategoryName(categoryName);
try
{
if (PerformanceCounterCategory.Exists(httpClientCategoryName))
{
PerformanceCounterCategory.Delete(httpClientCategoryName);
}
}
catch (Exception ex)
{
Console.WriteLine(ex);
}
var methodHanderCategoryName = PerformanceCounterApmMethodHandler.GetCategoryName(categoryName);
try
{
if (PerformanceCounterCategory.Exists(methodHanderCategoryName))
{
PerformanceCounterCategory.Delete(methodHanderCategoryName);
}
}
catch (Exception ex)
{
Console.WriteLine(ex);
}
}
public static void AddPerformanceCountersApm(this HttpConfiguration configuration, string applicationName, bool addResponseHeaders)
{
ApmContextHttpMessageExtractor.AddExtractor();
ApmHttpClientApmContextExtensions.ApmHttpClientDelegatingHandlerFactories.Add(new PerformanceCounterApmHttpClientDelegatingHandlerFactory());
ApmMethodHandlerApmContextExtensions.ApmMethodHttpFactories.Add(new PerformanceCounterApmMethodHandlerFactory());
PerformanceCounterApmApiFilterAttribute.ApplicationName = applicationName;
PerformanceCounterApmApiFilterAttribute.AddResponseHeaders = addResponseHeaders;
PerformanceCounterApmHttpClientDelegatingHandler.ApplicationName = applicationName;
PerformanceCounterApmMethodHandler.ApplicationName = applicationName;
var performanceCounterApmApiFilterAttribute = new PerformanceCounterApmApiFilterAttribute();
configuration.Filters.Add(performanceCounterApmApiFilterAttribute);
}
/// <summary>
/// Installs performance counters in the current assembly using PerfItFilterAttribute.
/// </summary>
/// <param name="installerAssembly"></param>
/// <param name="categoryName">category name for the metrics. If not provided, it will use the assembly name</param>
public static void Install(Assembly installerAssembly, string categoryName = null)
{
if (string.IsNullOrEmpty(categoryName))
{
categoryName = installerAssembly.GetName().Name;
}
Uninstall(installerAssembly, categoryName);
var httpActionDescriptors = FindAllHttpActionDescriptors(installerAssembly).Distinct().ToArray();
var httpActionDescriptorCounters = GetCounterCreationDataCollectionForHttpActionDescriptors(httpActionDescriptors);
var httpActionDescriptorCategoryName = PerformanceCounterApmApiFilterAttribute.GetCategoryName(categoryName);
PerformanceCounterCategory.Create(httpActionDescriptorCategoryName, "APM api filter category for " + categoryName, PerformanceCounterCategoryType.MultiInstance, httpActionDescriptorCounters);
Trace.TraceInformation("Built category '{0}' with {1} items", httpActionDescriptorCategoryName, httpActionDescriptorCounters.Count);
//Todo: Need to rather use ApmContext.GetDelegatingHandler and ApmContext.GetMethodHander
var apmContextUsage = FindAllApmContextUsage(installerAssembly).Distinct().ToArray();
var apmContextUsageCounters = GetCounterCreationDataCollectionForApmContextUsage(apmContextUsage);
var httpClientCategoryName = PerformanceCounterApmHttpClientDelegatingHandler.GetCategoryName(categoryName);
PerformanceCounterCategory.Create(httpClientCategoryName, "APM http client category for " + categoryName, PerformanceCounterCategoryType.MultiInstance, apmContextUsageCounters);
Trace.TraceInformation("Built category '{0}' with {1} items", httpClientCategoryName, apmContextUsageCounters.Count);
}
