public MetricInfo(string context, string metricName, MetricTags tags, TimerMetric timer, PerfCounterGauge perfCounter)
{
this.Context = context;
this.MetricName = metricName;
this.Tags = tags;
this.Timer = timer;
this.PerfCounter = perfCounter;
this.Key = TagName(this.Context + this.MetricName, this.Tags);
}
private MetricInfo RegisterMetric(PdhCounterPathElement pathElement, IDictionary<String, MetricInfo> existingMetrics)
{
string contextName = CleanName(pathElement.ObjectName);
string metricName = CleanName(pathElement.CounterName);
string instanceName = CleanName(pathElement.InstanceName);
MetricTags tags = default(MetricTags);
if (instanceName != null)
{
tags = "instance=" + instanceName;
}
string keyName = MetricInfo.TagName(contextName + metricName, tags);
MetricInfo mInfo;
if (existingMetrics.TryGetValue(keyName, out mInfo))
{
existingMetrics.Remove(keyName);
return mInfo;
}
PerfCounterGauge pcGauge = new PerfCounterGauge(pathElement.ObjectName, pathElement.CounterName, pathElement.InstanceName);
TimerMetric timer = null;
PerformanceCounterType type = pcGauge.performanceCounter.CounterType;
switch (type)
{
//these types of counters are not usable
case PerformanceCounterType.AverageBase:
case PerformanceCounterType.CounterMultiBase:
case PerformanceCounterType.RawBase:
case PerformanceCounterType.SampleBase:
_log.Error(String.Format("Don't know how to handle metric of type {0} for {1}", type.ToString(), metricName));
return null;
//timers
case PerformanceCounterType.AverageTimer32:
case PerformanceCounterType.ElapsedTime:
timer = new TimerMetric(SamplingType.FavourRecent);
break;
}
mInfo = new MetricInfo(contextName, metricName, tags, timer, pcGauge);
if (mInfo.Timer != null)
{
_timers[keyName] = mInfo;
}
return mInfo;
}
