func dumpHistogram(name string, metric gometrics.Histogram) {
m := metric.Snapshot()
logger.WithFields(logrus.Fields{
"name": name,
"count": m.Count(),
"sum": m.Sum(),
"min": m.Min(),
"max": m.Max(),
"mean": m.Mean(),
"stddev": m.StdDev(),
"variance": m.Variance(),
}).Info()
}
// AddHistogramMetric Adds various metrics based on a Histogram, according to the supplied
// MetricConfig
func AddHistogramMetric(plugin *newrelic.Plugin, histo metrics.Histogram, config MetricConfig) {
durString := parseDuration(config.Duration)
unitSingular := singularize(config.Unit)
units := durString + "/" + unitSingular
if config.Count {
plugin.AddMetric(newrelic.NewMetric(config.Name+"/Totals/Count", config.Unit, func() (float64, error) { return float64(histo.Snapshot().Count()), nil }))
}
if config.Min {
plugin.AddMetric(newrelic.NewMetric(config.Name+"/Stats/Min", durString, func() (float64, error) { return float64(histo.Snapshot().Min() / int64(config.Duration)), nil }))
}
if config.Max {
plugin.AddMetric(newrelic.NewMetric(config.Name+"/Stats/Max", durString, func() (float64, error) { return float64(histo.Snapshot().Max() / int64(config.Duration)), nil }))
}
if config.Mean {
plugin.AddMetric(newrelic.NewMetric(config.Name+"/Rate/Mean", units, func() (float64, error) { return histo.Snapshot().Mean() / float64(config.Duration), nil }))
}
for _, pct := range config.Percentiles {
if pct == 0.5 {
localPct := pct
plugin.AddMetric(newrelic.NewMetric(config.Name+"/Rate/Median", units, func() (float64, error) { return histo.Snapshot().Percentile(localPct) / float64(config.Duration), nil }))
} else {
localPct := pct
plugin.AddMetric(newrelic.NewMetric(config.Name+"/Rate/"+pctToA(pct), units, func() (float64, error) { return histo.Snapshot().Percentile(localPct) / float64(config.Duration), nil }))
}
}
if config.StdDev {
plugin.AddMetric(newrelic.NewMetric(config.Name+"/Stats/Std Dev", durString, func() (float64, error) { return histo.Snapshot().StdDev() / float64(config.Duration), nil }))
}
if config.Sum {
plugin.AddMetric(newrelic.NewMetric(config.Name+"/Totals/Sum", durString, func() (float64, error) { return float64(histo.Snapshot().Sum() / int64(config.Duration)), nil }))
}
if config.Variance {
plugin.AddMetric(newrelic.NewMetric(config.Name+"/Stats/Variance", durString, func() (float64, error) { return histo.Snapshot().Variance() / float64(config.Duration), nil }))
}
}