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package forward
import (
"sync"
"github.com/coredns/coredns/plugin"
"github.com/prometheus/client_golang/prometheus"
)
// Variables declared for monitoring.
var (
RequestCount = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: plugin.Namespace,
Subsystem: "forward",
Name: "request_count_total",
Help: "Counter of requests made per upstream.",
}, []string{"to"})
RcodeCount = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: plugin.Namespace,
Subsystem: "forward",
Name: "response_rcode_count_total",
Help: "Counter of requests made per upstream.",
}, []string{"rcode", "to"})
RequestDuration = prometheus.NewHistogramVec(prometheus.HistogramOpts{
Namespace: plugin.Namespace,
Subsystem: "forward",
Name: "request_duration_seconds",
Buckets: plugin.TimeBuckets,
Help: "Histogram of the time each request took.",
}, []string{"to"})
HealthcheckFailureCount = prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: plugin.Namespace,
Subsystem: "forward",
Name: "healthcheck_failure_count_total",
Help: "Counter of the number of failed healtchecks.",
}, []string{"to"})
HealthcheckBrokenCount = prometheus.NewCounter(prometheus.CounterOpts{
Namespace: plugin.Namespace,
Subsystem: "forward",
Name: "healthcheck_broken_count_total",
Help: "Counter of the number of complete failures of the healtchecks.",
})
SocketGauge = prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: plugin.Namespace,
Subsystem: "forward",
Name: "socket_count_total",
Help: "Guage of open sockets per upstream.",
}, []string{"to"})
)
var once sync.Once
|
