60 lines
1.8 KiB
Go
60 lines
1.8 KiB
Go
// Copyright (C) 2022 Storj Labs, Inc.
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// See LICENSE for copying information.
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package rangedloop
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import (
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"fmt"
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"sync"
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"github.com/jtolio/eventkit"
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"github.com/spacemonkeygo/monkit/v3"
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)
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var (
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completedObserverStatsInstance completedObserverStats
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completedObserverStatsInstanceInitOnce sync.Once
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)
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func sendObserverDurations(observerDurations []ObserverDuration) {
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for _, od := range observerDurations {
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ev.Event("rangedloop",
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eventkit.String("observer", fmt.Sprintf("%T", od.Observer)),
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eventkit.Duration("duration", od.Duration))
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}
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completedObserverStatsInstance.setObserverDurations(observerDurations)
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completedObserverStatsInstanceInitOnce.Do(func() {
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mon.Chain(&completedObserverStatsInstance)
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})
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}
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// Implements monkit.StatSource.
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// Reports the duration per observer from the last completed run of the ranged segment loop.
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type completedObserverStats struct {
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mu sync.Mutex
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observerDurations []ObserverDuration
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}
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// Stats implements monkit.StatSource to send the observer durations every time monkit is polled externally.
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func (o *completedObserverStats) Stats(cb func(key monkit.SeriesKey, field string, val float64)) {
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o.mu.Lock()
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defer o.mu.Unlock()
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// if there are no completed observers yet, no statistics will be sent
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for _, observerDuration := range o.observerDurations {
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key := monkit.NewSeriesKey("completed-observer-duration")
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key = key.WithTag("observer", fmt.Sprintf("%T", observerDuration.Observer))
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cb(key, "duration", observerDuration.Duration.Seconds())
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}
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}
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// setObserverDurations sets the observer durations to report at ranged segment loop completion.
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func (o *completedObserverStats) setObserverDurations(observerDurations []ObserverDuration) {
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o.mu.Lock()
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defer o.mu.Unlock()
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o.observerDurations = observerDurations
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}
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