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stats.go
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/
stats.go
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package pg
import (
"database/sql"
"time"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promauto"
)
const dbStatsInternal = 10 * time.Second
var (
promDBConnsMax = promauto.NewGauge(prometheus.GaugeOpts{
Name: "db_conns_max",
Help: "Maximum number of open connections to the database.",
})
promDBConnsOpen = promauto.NewGauge(prometheus.GaugeOpts{
Name: "db_conns_open",
Help: "The number of established connections both in use and idle.",
})
promDBConnsInUse = promauto.NewGauge(prometheus.GaugeOpts{
Name: "db_conns_used",
Help: "The number of connections currently in use.",
})
promDBWaitCount = promauto.NewGauge(prometheus.GaugeOpts{
Name: "db_wait_count",
Help: "The total number of connections waited for.",
})
promDBWaitDuration = promauto.NewGauge(prometheus.GaugeOpts{
Name: "db_wait_time_seconds",
Help: "The total time blocked waiting for a new connection.",
})
)
func publishStats(stats sql.DBStats) {
promDBConnsMax.Set(float64(stats.MaxOpenConnections))
promDBConnsOpen.Set(float64(stats.OpenConnections))
promDBConnsInUse.Set(float64(stats.InUse))
promDBWaitCount.Set(float64(stats.WaitCount))
promDBWaitDuration.Set(stats.WaitDuration.Seconds())
}