42 lines
1.1 KiB
Go
42 lines
1.1 KiB
Go
package sql
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import (
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"context"
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"database/sql"
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"time"
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)
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type Statser interface {
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Stats() sql.DBStats
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}
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func NewStatsMeter(ctx context.Context, db Statser, opts ...Option) {
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options := NewOptions(opts...)
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go func() {
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ticker := time.NewTicker(options.MeterStatsInterval)
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defer ticker.Stop()
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for {
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select {
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case <-ctx.Done():
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return
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case <-ticker.C:
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if db == nil {
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return
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}
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stats := db.Stats()
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options.Meter.Counter(MaxOpenConnections).Set(uint64(stats.MaxOpenConnections))
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options.Meter.Counter(OpenConnections).Set(uint64(stats.OpenConnections))
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options.Meter.Counter(InuseConnections).Set(uint64(stats.InUse))
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options.Meter.Counter(IdleConnections).Set(uint64(stats.Idle))
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options.Meter.Counter(WaitConnections).Set(uint64(stats.WaitCount))
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options.Meter.FloatCounter(BlockedSeconds).Set(stats.WaitDuration.Seconds())
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options.Meter.Counter(MaxIdleClosed).Set(uint64(stats.MaxIdleClosed))
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options.Meter.Counter(MaxIdletimeClosed).Set(uint64(stats.MaxIdleTimeClosed))
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options.Meter.Counter(MaxLifetimeClosed).Set(uint64(stats.MaxLifetimeClosed))
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}
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}
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}()
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}
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