internal virtual void Add(string name, MutableMetric metric)
{
lock (this)
{
CheckMetricName(name);
metricsMap[name] = metric;
}
}
internal MethodMetric(object obj, MethodInfo method, MetricsInfo info, Metric.Type
type)
{
this.obj = Preconditions.CheckNotNull(obj, "object");
this.method = Contracts.CheckArg(method, Runtime.GetParameterTypes(method
).Length == 0, "Metric method should have no arguments");
this.info = Preconditions.CheckNotNull(info, "info");
impl = NewImpl(Preconditions.CheckNotNull(type, "metric type"));
}
internal virtual MutableMetric NewForField(FieldInfo field, Metric annotation, MetricsRegistry
registry)
{
if (Log.IsDebugEnabled())
{
Log.Debug("field " + field + " with annotation " + annotation);
}
MetricsInfo info = GetInfo(annotation, field);
MutableMetric metric = NewForField(field, annotation);
if (metric != null)
{
registry.Add(info.Name(), metric);
return(metric);
}
Type cls = field.FieldType;
if (cls == typeof(MutableCounterInt))
{
return(registry.NewCounter(info, 0));
}
if (cls == typeof(MutableCounterLong))
{
return(registry.NewCounter(info, 0L));
}
if (cls == typeof(MutableGaugeInt))
{
return(registry.NewGauge(info, 0));
}
if (cls == typeof(MutableGaugeLong))
{
return(registry.NewGauge(info, 0L));
}
if (cls == typeof(MutableRate))
{
return(registry.NewRate(info.Name(), info.Description(), annotation.Always()));
}
if (cls == typeof(MutableRates))
{
return(new MutableRates(registry));
}
if (cls == typeof(MutableStat))
{
return(registry.NewStat(info.Name(), info.Description(), annotation.SampleName(),
annotation.ValueName(), annotation.Always()));
}
throw new MetricsException("Unsupported metric field " + field.Name + " of type "
+ field.FieldType.FullName);
}
internal virtual MutableMetric NewForMethod(object source, MethodInfo method, Metric
annotation, MetricsRegistry registry)
{
if (Log.IsDebugEnabled())
{
Log.Debug("method " + method + " with annotation " + annotation);
}
MetricsInfo info = GetInfo(annotation, method);
MutableMetric metric = NewForMethod(source, method, annotation);
metric = metric != null ? metric : new MethodMetric(source, method, info, annotation
.Type());
registry.Add(info.Name(), metric);
return(metric);
}
private void Add(object source, FieldInfo field)
{
foreach (Annotation.Annotation annotation in field.GetAnnotations())
{
if (!(annotation is Metric))
{
continue;
}
try
{
// skip fields already set
if (field.GetValue(source) != null)
{
continue;
}
}
catch (Exception e)
{
Log.Warn("Error accessing field " + field + " annotated with" + annotation, e);
continue;
}
MutableMetric mutable = factory.NewForField(field, (Metric)annotation, registry);
if (mutable != null)
{
try
{
field.SetValue(source, mutable);
hasAtMetric = true;
}
catch (Exception e)
{
throw new MetricsException("Error setting field " + field + " annotated with " +
annotation, e);
}
}
}
}
/// <summary>Add sample to a stat metric by name.</summary>
/// <param name="name">of the metric</param>
/// <param name="value">of the snapshot to add</param>
public virtual void Add(string name, long value)
{
lock (this)
{
MutableMetric m = metricsMap[name];
if (m != null)
{
if (m is MutableStat)
{
((MutableStat)m).Add(value);
}
else
{
throw new MetricsException("Unsupported add(value) for metric " + name);
}
}
else
{
metricsMap[name] = NewRate(name);
// default is a rate metric
Add(name, value);
}
}
}
public virtual MutableRate NewRate(string name, string desc, bool extended, bool
returnExisting)
{
lock (this)
{
if (returnExisting)
{
MutableMetric rate = metricsMap[name];
if (rate != null)
{
if (rate is MutableRate)
{
return((MutableRate)rate);
}
throw new MetricsException("Unexpected metrics type " + rate.GetType() + " for "
+ name);
}
}
CheckMetricName(name);
MutableRate ret = new MutableRate(name, desc, extended);
metricsMap[name] = ret;
return(ret);
}
}
