func main() {
foo_rpc_latency := metrics.CreateHistogram(&metrics.HistogramSpecification{
Starts: metrics.EquallySizedBucketsFor(0, 200, 4),
BucketMaker: metrics.AccumulatingBucketBuilder(metrics.EvictAndReplaceWith(10, maths.Average), 50),
ReportablePercentiles: []float64{0.01, 0.05, 0.5, 0.90, 0.99},
})
foo_rpc_calls := &metrics.GaugeMetric{}
bar_rpc_latency := metrics.CreateHistogram(&metrics.HistogramSpecification{
Starts: metrics.EquallySizedBucketsFor(0, 200, 4),
BucketMaker: metrics.AccumulatingBucketBuilder(metrics.EvictAndReplaceWith(10, maths.Average), 50),
ReportablePercentiles: []float64{0.01, 0.05, 0.5, 0.90, 0.99},
})
bar_rpc_calls := &metrics.GaugeMetric{}
zed_rpc_latency := metrics.CreateHistogram(&metrics.HistogramSpecification{
Starts: metrics.EquallySizedBucketsFor(0, 200, 4),
BucketMaker: metrics.AccumulatingBucketBuilder(metrics.EvictAndReplaceWith(10, maths.Average), 50),
ReportablePercentiles: []float64{0.01, 0.05, 0.5, 0.90, 0.99},
})
zed_rpc_calls := &metrics.GaugeMetric{}
metrics := registry.NewRegistry()
metrics.Register("rpc_latency_foo_microseconds", foo_rpc_latency)
metrics.Register("rpc_calls_foo_total", foo_rpc_calls)
metrics.Register("rpc_latency_bar_microseconds", bar_rpc_latency)
metrics.Register("rpc_calls_bar_total", bar_rpc_calls)
metrics.Register("rpc_latency_zed_microseconds", zed_rpc_latency)
metrics.Register("rpc_calls_zed_total", zed_rpc_calls)
go func() {
for {
foo_rpc_latency.Add(rand.Float64() * 200)
foo_rpc_calls.Increment()
bar_rpc_latency.Add((rand.NormFloat64() * 10.0) + 100.0)
bar_rpc_calls.Increment()
zed_rpc_latency.Add(rand.ExpFloat64())
zed_rpc_calls.Increment()
time.Sleep(100 * time.Millisecond)
}
}()
exporter := metrics.YieldExporter()
http.Handle("/metrics.json", exporter)
http.ListenAndServe(":8080", nil)
}
getLabelNameFingerprints = "get_label_name_fingerprints"
getMetricForFingerprint = "get_metric_for_fingerprint"
getRangeValues = "get_range_values"
getValueAtTime = "get_value_at_time"
hasIndexMetric = "has_index_metric"
hasLabelName = "has_label_name"
hasLabelPair = "has_label_pair"
indexMetric = "index_metric"
setLabelNameFingerprints = "set_label_name_fingerprints"
setLabelPairFingerprints = "set_label_pair_fingerprints"
)
var (
diskLatencyHistogram = &metrics.HistogramSpecification{
Starts: metrics.LogarithmicSizedBucketsFor(0, 5000),
BucketBuilder: metrics.AccumulatingBucketBuilder(metrics.EvictAndReplaceWith(10, maths.Average), 100),
ReportablePercentiles: []float64{0.01, 0.05, 0.5, 0.90, 0.99},
}
storageOperations = metrics.NewCounter()
storageLatency = metrics.NewHistogram(diskLatencyHistogram)
)
func recordOutcome(counter metrics.Counter, latency metrics.Histogram, duration time.Duration, err error, success, failure map[string]string) {
labels := success
if err != nil {
labels = failure
}
counter.Increment(labels)
latency.Add(labels, float64(duration/time.Microsecond))