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0d6e113f90
Add a NativeHistogramBucketFactor parameter to the use of `NewHistogramVec` in order to enable use of Prometheus Native Histograms. This will store automatically computed sparse buckets in CoreDNS. If a compatible Prometeus requests native histograms this data will returned instead of the static buckets. The default factor of 1.05 should provide high quality resolution data. Signed-off-by: SuperQ <superq@gmail.com>
33 lines
1.1 KiB
Go
33 lines
1.1 KiB
Go
package grpc
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import (
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"github.com/coredns/coredns/plugin"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/promauto"
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)
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// Variables declared for monitoring.
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var (
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RequestCount = promauto.NewCounterVec(prometheus.CounterOpts{
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Namespace: plugin.Namespace,
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Subsystem: "grpc",
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Name: "requests_total",
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Help: "Counter of requests made per upstream.",
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}, []string{"to"})
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RcodeCount = promauto.NewCounterVec(prometheus.CounterOpts{
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Namespace: plugin.Namespace,
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Subsystem: "grpc",
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Name: "responses_total",
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Help: "Counter of requests made per upstream.",
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}, []string{"rcode", "to"})
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RequestDuration = promauto.NewHistogramVec(prometheus.HistogramOpts{
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Namespace: plugin.Namespace,
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Subsystem: "grpc",
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Name: "request_duration_seconds",
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Buckets: plugin.TimeBuckets,
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NativeHistogramBucketFactor: plugin.NativeHistogramBucketFactor,
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Help: "Histogram of the time each request took.",
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}, []string{"to"})
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)
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