/// <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 = this.LoggingConfiguration.AllTargets.OfType<PerformanceCounterTarget>().BucketSort(c => c.CategoryName);
string categoryName = this.CategoryName;
if (countersByCategory[categoryName].Any(c => c.created))
{
installationContext.Trace("Category '{0}' has already been installed.", categoryName);
return;
}
try
{
PerformanceCounterCategoryType categoryType;
CounterCreationDataCollection ccds = GetCounterCreationDataCollection(countersByCategory[this.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;
}
}
}
private void RunInstallCommands(InstallationContext installationContext, IEnumerable<DatabaseCommandInfo> commands)
{
// create log event that will be used to render all layouts
LogEventInfo logEvent = installationContext.CreateLogEvent();
try
{
foreach (var commandInfo in commands)
{
string cs;
if (commandInfo.ConnectionString != null)
{
// if there is connection string specified on the command info, use it
cs = commandInfo.ConnectionString.Render(logEvent);
}
else if (this.InstallConnectionString != null)
{
// next, try InstallConnectionString
cs = this.InstallConnectionString.Render(logEvent);
}
else
{
// if it's not defined, fall back to regular connection string
cs = this.BuildConnectionString(logEvent);
}
this.EnsureConnectionOpen(cs);
var command = this.activeConnection.CreateCommand();
command.CommandType = commandInfo.CommandType;
command.CommandText = commandInfo.Text.Render(logEvent);
try
{
installationContext.Trace("Executing {0} '{1}'", command.CommandType, command.CommandText);
command.ExecuteNonQuery();
}
catch (Exception exception)
{
if (exception.MustBeRethrown())
{
throw;
}
if (commandInfo.IgnoreFailures || installationContext.IgnoreFailures)
{
installationContext.Warning(exception.Message);
}
else
{
installationContext.Error(exception.Message);
throw;
}
}
}
}
finally
{
this.CloseConnection();
}
}
