98 lines
3.6 KiB
Go
98 lines
3.6 KiB
Go
package metrics
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import (
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"context"
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"time"
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kitlog "github.com/go-kit/kit/log"
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"github.com/go-kit/kit/metrics/statsd"
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"github.com/traefik/traefik/v2/pkg/log"
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"github.com/traefik/traefik/v2/pkg/safe"
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"github.com/traefik/traefik/v2/pkg/types"
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)
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var (
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statsdClient *statsd.Statsd
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statsdTicker *time.Ticker
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)
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const (
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statsdMetricsServiceReqsName = "service.request.total"
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statsdMetricsServiceLatencyName = "service.request.duration"
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statsdRetriesTotalName = "service.retries.total"
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statsdConfigReloadsName = "config.reload.total"
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statsdConfigReloadsFailureName = statsdConfigReloadsName + ".failure"
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statsdLastConfigReloadSuccessName = "config.reload.lastSuccessTimestamp"
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statsdLastConfigReloadFailureName = "config.reload.lastFailureTimestamp"
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statsdEntryPointReqsName = "entrypoint.request.total"
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statsdEntryPointReqDurationName = "entrypoint.request.duration"
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statsdEntryPointOpenConnsName = "entrypoint.connections.open"
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statsdOpenConnsName = "service.connections.open"
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statsdServerUpName = "service.server.up"
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)
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// RegisterStatsd registers the metrics pusher if this didn't happen yet and creates a statsd Registry instance.
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func RegisterStatsd(ctx context.Context, config *types.Statsd) Registry {
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// just to be sure there is a prefix defined
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if config.Prefix == "" {
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config.Prefix = "traefik"
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}
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statsdClient = statsd.New(config.Prefix+".", kitlog.LoggerFunc(func(keyvals ...interface{}) error {
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log.WithoutContext().WithField(log.MetricsProviderName, "statsd").Info(keyvals)
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return nil
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}))
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if statsdTicker == nil {
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statsdTicker = initStatsdTicker(ctx, config)
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}
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registry := &standardRegistry{
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configReloadsCounter: statsdClient.NewCounter(statsdConfigReloadsName, 1.0),
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configReloadsFailureCounter: statsdClient.NewCounter(statsdConfigReloadsFailureName, 1.0),
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lastConfigReloadSuccessGauge: statsdClient.NewGauge(statsdLastConfigReloadSuccessName),
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lastConfigReloadFailureGauge: statsdClient.NewGauge(statsdLastConfigReloadFailureName),
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}
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if config.AddEntryPointsLabels {
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registry.epEnabled = config.AddEntryPointsLabels
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registry.entryPointReqsCounter = statsdClient.NewCounter(statsdEntryPointReqsName, 1.0)
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registry.entryPointReqDurationHistogram, _ = NewHistogramWithScale(statsdClient.NewTiming(statsdEntryPointReqDurationName, 1.0), time.Millisecond)
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registry.entryPointOpenConnsGauge = statsdClient.NewGauge(statsdEntryPointOpenConnsName)
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}
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if config.AddServicesLabels {
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registry.svcEnabled = config.AddServicesLabels
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registry.serviceReqsCounter = statsdClient.NewCounter(statsdMetricsServiceReqsName, 1.0)
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registry.serviceReqDurationHistogram, _ = NewHistogramWithScale(statsdClient.NewTiming(statsdMetricsServiceLatencyName, 1.0), time.Millisecond)
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registry.serviceRetriesCounter = statsdClient.NewCounter(statsdRetriesTotalName, 1.0)
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registry.serviceOpenConnsGauge = statsdClient.NewGauge(statsdOpenConnsName)
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registry.serviceServerUpGauge = statsdClient.NewGauge(statsdServerUpName)
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}
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return registry
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}
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// initStatsdTicker initializes metrics pusher and creates a statsdClient if not created already.
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func initStatsdTicker(ctx context.Context, config *types.Statsd) *time.Ticker {
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address := config.Address
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if len(address) == 0 {
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address = "localhost:8125"
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}
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report := time.NewTicker(time.Duration(config.PushInterval))
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safe.Go(func() {
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statsdClient.SendLoop(ctx, report.C, "udp", address)
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})
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return report
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}
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// StopStatsd stops internal statsdTicker which controls the pushing of metrics to StatsD Agent and resets it to `nil`.
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func StopStatsd() {
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if statsdTicker != nil {
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statsdTicker.Stop()
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}
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statsdTicker = nil
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}
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