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package proxy
import (
"github.com/coredns/coredns/plugin"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promauto"
)
// Variables declared for monitoring.
var (
requestDuration = promauto.NewHistogramVec(prometheus.HistogramOpts{
Namespace: plugin.Namespace,
Subsystem: "proxy",
Name: "request_duration_seconds",
Buckets: plugin.TimeBuckets,
NativeHistogramBucketFactor: plugin.NativeHistogramBucketFactor,
Help: "Histogram of the time each request took.",
}, []string{"proxy_name", "to", "rcode"})
healthcheckFailureCount = promauto.NewCounterVec(prometheus.CounterOpts{
Namespace: plugin.Namespace,
Subsystem: "proxy",
Name: "healthcheck_failures_total",
Help: "Counter of the number of failed healthchecks.",
}, []string{"proxy_name", "to"})
connCacheHitsCount = promauto.NewCounterVec(prometheus.CounterOpts{
Namespace: plugin.Namespace,
Subsystem: "proxy",
Name: "conn_cache_hits_total",
Help: "Counter of connection cache hits per upstream and protocol.",
}, []string{"proxy_name", "to", "proto"})
connCacheMissesCount = promauto.NewCounterVec(prometheus.CounterOpts{
Namespace: plugin.Namespace,
Subsystem: "proxy",
Name: "conn_cache_misses_total",
Help: "Counter of connection cache misses per upstream and protocol.",
}, []string{"proxy_name", "to", "proto"})
)
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