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80 lines
2.9 KiB
80 lines
2.9 KiB
package metrics |
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import ( |
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"time" |
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) |
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type Logger interface { |
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Printf(format string, v ...interface{}) |
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} |
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func Log(r Registry, freq time.Duration, l Logger) { |
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LogScaled(r, freq, time.Nanosecond, l) |
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} |
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// Output each metric in the given registry periodically using the given |
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// logger. Print timings in `scale` units (eg time.Millisecond) rather than nanos. |
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func LogScaled(r Registry, freq time.Duration, scale time.Duration, l Logger) { |
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du := float64(scale) |
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duSuffix := scale.String()[1:] |
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for _ = range time.Tick(freq) { |
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r.Each(func(name string, i interface{}) { |
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switch metric := i.(type) { |
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case Counter: |
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l.Printf("counter %s\n", name) |
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l.Printf(" count: %9d\n", metric.Count()) |
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case Gauge: |
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l.Printf("gauge %s\n", name) |
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l.Printf(" value: %9d\n", metric.Value()) |
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case GaugeFloat64: |
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l.Printf("gauge %s\n", name) |
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l.Printf(" value: %f\n", metric.Value()) |
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case Healthcheck: |
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metric.Check() |
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l.Printf("healthcheck %s\n", name) |
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l.Printf(" error: %v\n", metric.Error()) |
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case Histogram: |
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h := metric.Snapshot() |
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ps := h.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999}) |
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l.Printf("histogram %s\n", name) |
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l.Printf(" count: %9d\n", h.Count()) |
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l.Printf(" min: %9d\n", h.Min()) |
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l.Printf(" max: %9d\n", h.Max()) |
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l.Printf(" mean: %12.2f\n", h.Mean()) |
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l.Printf(" stddev: %12.2f\n", h.StdDev()) |
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l.Printf(" median: %12.2f\n", ps[0]) |
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l.Printf(" 75%%: %12.2f\n", ps[1]) |
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l.Printf(" 95%%: %12.2f\n", ps[2]) |
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l.Printf(" 99%%: %12.2f\n", ps[3]) |
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l.Printf(" 99.9%%: %12.2f\n", ps[4]) |
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case Meter: |
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m := metric.Snapshot() |
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l.Printf("meter %s\n", name) |
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l.Printf(" count: %9d\n", m.Count()) |
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l.Printf(" 1-min rate: %12.2f\n", m.Rate1()) |
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l.Printf(" 5-min rate: %12.2f\n", m.Rate5()) |
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l.Printf(" 15-min rate: %12.2f\n", m.Rate15()) |
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l.Printf(" mean rate: %12.2f\n", m.RateMean()) |
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case Timer: |
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t := metric.Snapshot() |
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ps := t.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999}) |
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l.Printf("timer %s\n", name) |
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l.Printf(" count: %9d\n", t.Count()) |
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l.Printf(" min: %12.2f%s\n", float64(t.Min())/du, duSuffix) |
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l.Printf(" max: %12.2f%s\n", float64(t.Max())/du, duSuffix) |
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l.Printf(" mean: %12.2f%s\n", t.Mean()/du, duSuffix) |
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l.Printf(" stddev: %12.2f%s\n", t.StdDev()/du, duSuffix) |
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l.Printf(" median: %12.2f%s\n", ps[0]/du, duSuffix) |
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l.Printf(" 75%%: %12.2f%s\n", ps[1]/du, duSuffix) |
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l.Printf(" 95%%: %12.2f%s\n", ps[2]/du, duSuffix) |
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l.Printf(" 99%%: %12.2f%s\n", ps[3]/du, duSuffix) |
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l.Printf(" 99.9%%: %12.2f%s\n", ps[4]/du, duSuffix) |
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l.Printf(" 1-min rate: %12.2f\n", t.Rate1()) |
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l.Printf(" 5-min rate: %12.2f\n", t.Rate5()) |
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l.Printf(" 15-min rate: %12.2f\n", t.Rate15()) |
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l.Printf(" mean rate: %12.2f\n", t.RateMean()) |
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} |
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}) |
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} |
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}
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