/// <summary>
/// Adds a <see cref="MetricRegistryListener"/> to a collection of listeners that will be notified on
/// metric creation.Listeners will be notified in the order in which they are added.
/// <para />
/// The listener will be notified of all existing metrics when it first registers.
/// </summary>
/// <param name="listener"></param>
public void AddListener(MetricRegistryListener listener)
{
handler.RegisterListener(listener);
// TODO: Figure out how to notify listener of existing metrics efficiently
foreach (KeyValuePair <MetricName, IMetric> entry in this._metrics)
{
MetricName name = entry.Key;
IMetric metric = entry.Value;
Type metricType = metric.GetType();
if (metricType.IsSubclassOf(typeof(Gauge)))
{
handler.onGaugeAdded(name, (Gauge)metric);
}
else if (metric is Counter)
{
handler.onCounterAdded(name, (Counter)metric);
}
else if (metric is Histogram)
{
handler.onHistogramAdded(name, (Histogram)metric);
}
else if (metric is Meter)
{
handler.onMeterAdded(name, (Meter)metric);
}
else if (metric is Timer)
{
handler.onTimerAdded(name, (Timer)metric);
}
else
{
continue;
}
}
}
internal void RemoveListener(MetricRegistryListener listener)
{
onGaugeAdded -= listener.onGaugeAdded;
onGaugeRemoved -= listener.onGaugeRemoved;
onCounterAdded -= listener.onCounterAdded;
onCounterRemoved -= listener.onCounterRemoved;
onHistogramAdded -= listener.onHistogramAdded;
onHistogramRemoved -= listener.onHistogramRemoved;
onMeterAdded -= listener.onMeterAdded;
onMeterRemoved -= listener.onMeterRemoved;
onTimerAdded -= listener.onTimerAdded;
onTimerRemoved -= listener.onTimerRemoved;
}
/// <summary>
/// Removes a <see cref="MetricRegistryListener"/> from this registry's collection of listeners.
/// </summary>
/// <param name="listener">the listener that will be removed</param>
public void RemoveListener(MetricRegistryListener listener)
{
handler.RemoveListener(listener);
}
