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Add process start time metric (#675)

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Dan Sosedoff 2023-05-08 20:46:00 -05:00 committed by GitHub
parent 52f7988ebd
commit d4cfb059ce
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 12 additions and 0 deletions
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1
pkg/metrics/handler.go
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@ -14,6 +14,7 @@ type Handler struct {
func (h Handler) ServeHTTP(rw http.ResponseWriter, req *http.Request) { func (h Handler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
uptimeGauge.Set(time.Since(h.startTime).Seconds()) uptimeGauge.Set(time.Since(h.startTime).Seconds())
h.promHandler.ServeHTTP(rw, req) h.promHandler.ServeHTTP(rw, req)
} }

11
pkg/metrics/metrics.go
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@ -1,6 +1,8 @@
package metrics package metrics
import ( import (
"time"
"github.com/prometheus/client_golang/prometheus" "github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promauto" "github.com/prometheus/client_golang/prometheus/promauto"
) )
@ -21,12 +23,21 @@ var (
Help: "Server health status", Help: "Server health status",
}) })
startTimeGauge = promauto.NewGauge(prometheus.GaugeOpts{
Name: "pgweb_process_start_time",
Help: "Server start time, seconds since unix epoch",
})
uptimeGauge = promauto.NewGauge(prometheus.GaugeOpts{ uptimeGauge = promauto.NewGauge(prometheus.GaugeOpts{
Name: "pgweb_uptime", Name: "pgweb_uptime",
Help: "Server application uptime in seconds", Help: "Server application uptime in seconds",
}) })
) )
func init() {
startTimeGauge.Set(float64(time.Now().Unix()))
}
func IncrementQueriesCount() { func IncrementQueriesCount() {
queriesCounter.Inc() queriesCounter.Inc()
} }