/// <summary>
/// Performs uninstallation which requires administrative permissions.
/// </summary>
/// <param name="installationContext">The installation context.</param>
public void Uninstall(InstallationContext installationContext)
{
var categoryName = CategoryName;
if (PerformanceCounterCategory.Exists(categoryName))
{
installationContext.Debug("Deleting category '{0}'", categoryName);
PerformanceCounterCategory.Delete(categoryName);
}
else
{
installationContext.Debug("Category '{0}' does not exist.", categoryName);
}
}
/// <summary>
/// Performs installation which requires administrative permissions.
/// </summary>
/// <param name="installationContext">The installation context.</param>
public void Install(InstallationContext installationContext)
{
// categories must be installed together, so we must find all PerfCounter targets in the configuration file
var countersByCategory = LoggingConfiguration.AllTargets.OfType<PerformanceCounterTarget>().BucketSort(c => c.CategoryName);
var categoryName = CategoryName;
if (countersByCategory[categoryName].Any(c => c.created))
{
installationContext.Trace("Category '{0}' has already been installed.", categoryName);
return;
}
try
{
PerformanceCounterCategoryType categoryType;
var ccds = GetCounterCreationDataCollection(countersByCategory[CategoryName], out categoryType);
if (PerformanceCounterCategory.Exists(categoryName))
{
installationContext.Debug("Deleting category '{0}'", categoryName);
PerformanceCounterCategory.Delete(categoryName);
}
installationContext.Debug("Creating category '{0}' with {1} counter(s) (Type: {2})", categoryName, ccds.Count, categoryType);
foreach (CounterCreationData c in ccds)
{
installationContext.Trace(" Counter: '{0}' Type: ({1}) Help: {2}", c.CounterName, c.CounterType, c.CounterHelp);
}
PerformanceCounterCategory.Create(categoryName, "Category created by NLog", categoryType, ccds);
}
catch (Exception exception)
{
if (exception.MustBeRethrown())
{
throw;
}
if (installationContext.IgnoreFailures)
{
installationContext.Warning("Error creating category '{0}': {1}", categoryName, exception.Message);
}
else
{
installationContext.Error("Error creating category '{0}': {1}", categoryName, exception.Message);
throw;
}
}
finally
{
foreach (var t in countersByCategory[categoryName])
{
t.created = true;
}
}
}