87 lines
3.4 KiB
Go
87 lines
3.4 KiB
Go
package metrics
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import (
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"context"
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"time"
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"github.com/containous/traefik/log"
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"github.com/containous/traefik/safe"
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"github.com/containous/traefik/types"
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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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)
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var statsdClient = statsd.New("traefik.", 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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var statsdTicker *time.Ticker
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const (
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statsdMetricsBackendReqsName = "backend.request.total"
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statsdMetricsBackendLatencyName = "backend.request.duration"
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statsdRetriesTotalName = "backend.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 = "backend.connections.open"
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statsdServerUpName = "backend.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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if statsdTicker == nil {
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statsdTicker = initStatsdTicker(ctx, config)
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}
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return &standardRegistry{
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enabled: true,
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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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entrypointReqsCounter: statsdClient.NewCounter(statsdEntrypointReqsName, 1.0),
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entrypointReqDurationHistogram: statsdClient.NewTiming(statsdEntrypointReqDurationName, 1.0),
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entrypointOpenConnsGauge: statsdClient.NewGauge(statsdEntrypointOpenConnsName),
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backendReqsCounter: statsdClient.NewCounter(statsdMetricsBackendReqsName, 1.0),
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backendReqDurationHistogram: statsdClient.NewTiming(statsdMetricsBackendLatencyName, 1.0),
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backendRetriesCounter: statsdClient.NewCounter(statsdRetriesTotalName, 1.0),
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backendOpenConnsGauge: statsdClient.NewGauge(statsdOpenConnsName),
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backendServerUpGauge: statsdClient.NewGauge(statsdServerUpName),
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}
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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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pushInterval, err := time.ParseDuration(config.PushInterval)
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if err != nil {
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log.FromContext(ctx).Warnf("Unable to parse %s from config.PushInterval: using 10s as the default value", config.PushInterval)
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pushInterval = 10 * time.Second
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}
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report := time.NewTicker(pushInterval)
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safe.Go(func() {
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statsdClient.SendLoop(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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