//------------------------------------------------------------------------------
//
// Method: ProcessCountMetricEvent
//
//------------------------------------------------------------------------------
/// <summary>
/// Writes a count metric event to the database.
/// </summary>
/// <param name="countMetricEvent">The count metric event to write.</param>
protected override void ProcessCountMetricEvent(CountMetricEventInstance countMetricEvent)
{
StringBuilder sqlInsertStatement = new StringBuilder();
sqlInsertStatement.Append("INSERT ");
sqlInsertStatement.Append("INTO CountMetricInstances ");
sqlInsertStatement.Append(" ( CmetId, ");
sqlInsertStatement.Append(" CtgrId, ");
sqlInsertStatement.Append(" [Timestamp] ");
sqlInsertStatement.Append(" ) ");
sqlInsertStatement.Append("SELECT Cmet.CmetId, ");
sqlInsertStatement.Append(" Ctgr.CtgrId, ");
sqlInsertStatement.Append(" '" + countMetricEvent.EventTime.ToString("yyyy-MM-dd HH:mm:ss") + "' ");
sqlInsertStatement.Append("FROM CountMetrics Cmet, ");
sqlInsertStatement.Append(" Categories Ctgr ");
sqlInsertStatement.Append("WHERE Cmet.Name = '" + countMetricEvent.Metric.Name + "' ");
sqlInsertStatement.Append(" AND Ctgr.Name = '" + metricCategoryName + "';");
dbCommand.CommandText = sqlInsertStatement.ToString();
try
{
dbCommand.ExecuteNonQuery();
}
catch (Exception e)
{
exceptionHandler.Handle(new Exception("Failed to insert instance of count metric '" + countMetricEvent.Metric.Name + "'.", e));
}
}
protected override void ProcessCountMetricEvent(CountMetricEventInstance countMetricEvent)
{
StringBuilder stringBuilder = InitializeStringBuilder(countMetricEvent.EventTime.ToLocalTime());
stringBuilder.Append(countMetricEvent.Metric.Name);
streamWriter.WriteLine(stringBuilder.ToString());
streamWriter.Flush();
}
//------------------------------------------------------------------------------
//
// Method: ProcessCountMetricEvent
//
//------------------------------------------------------------------------------
/// <summary>
/// Adds the instance of the specified count metric event to the stored total.
/// </summary>
/// <param name="countMetricEvent">The count metric event.</param>
protected override void ProcessCountMetricEvent(CountMetricEventInstance countMetricEvent)
{
if (countMetricTotals.ContainsKey(countMetricEvent.MetricType) == false)
{
countMetricTotals.Add(countMetricEvent.MetricType, new CountMetricTotalContainer(countMetricEvent.Metric));
}
countMetricTotals[countMetricEvent.MetricType].Increment();
}
//------------------------------------------------------------------------------
//
// Method: DequeueAndProcessCountMetricEvents
//
//------------------------------------------------------------------------------
/// <summary>
/// Dequeues count metric events stored in the internal buffer and calls abstract method ProcessCountMetricEvent() to process them.
/// </summary>
private void DequeueAndProcessCountMetricEvents()
{
Queue <CountMetricEventInstance> tempQueue;
// Lock the count metric queue and move all items to the temporary queue
lock (countMetricEventQueueLock)
{
tempQueue = new Queue <CountMetricEventInstance>(countMetricEventQueue);
countMetricEventQueue.Clear();
bufferProcessingStrategy.NotifyCountMetricEventBufferCleared();
}
// Process all items in the temporary queue
while (tempQueue.Count > 0)
{
CountMetricEventInstance currentCountMetricEvent = tempQueue.Dequeue();
ProcessCountMetricEvent(currentCountMetricEvent);
}
}
//------------------------------------------------------------------------------ // // Method: ProcessCountMetricEvent // //------------------------------------------------------------------------------ /// <summary> /// Processes a logged count metric event. /// </summary> /// <param name="countMetricEvent">The count metric event to process.</param> /// <remarks>Implementations of this method define how a count metric event should be processed after it has been retrieved from the internal buffer queue. The event could for example be written to a database, or to the console.</remarks> protected abstract void ProcessCountMetricEvent(CountMetricEventInstance countMetricEvent);
