122 lines
4.9 KiB
Go
122 lines
4.9 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/dogstatsd"
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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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datadogClient *dogstatsd.Dogstatsd
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datadogLoopCancelFunc context.CancelFunc
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)
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// Metric names consistent with https://github.com/DataDog/integrations-extras/pull/64
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const (
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ddConfigReloadsName = "config.reload.total"
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ddConfigReloadsFailureTagName = "failure"
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ddLastConfigReloadSuccessName = "config.reload.lastSuccessTimestamp"
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ddLastConfigReloadFailureName = "config.reload.lastFailureTimestamp"
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ddTLSCertsNotAfterTimestampName = "tls.certs.notAfterTimestamp"
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ddEntryPointReqsName = "entrypoint.request.total"
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ddEntryPointReqsTLSName = "entrypoint.request.tls.total"
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ddEntryPointReqDurationName = "entrypoint.request.duration"
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ddEntryPointOpenConnsName = "entrypoint.connections.open"
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ddMetricsRouterReqsName = "router.request.total"
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ddMetricsRouterReqsTLSName = "router.request.tls.total"
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ddMetricsRouterReqsDurationName = "router.request.duration"
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ddRouterOpenConnsName = "router.connections.open"
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ddMetricsServiceReqsName = "service.request.total"
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ddMetricsServiceReqsTLSName = "service.request.tls.total"
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ddMetricsServiceReqsDurationName = "service.request.duration"
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ddRetriesTotalName = "service.retries.total"
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ddOpenConnsName = "service.connections.open"
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ddServerUpName = "service.server.up"
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)
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// RegisterDatadog registers the metrics pusher if this didn't happen yet and creates a datadog Registry instance.
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func RegisterDatadog(ctx context.Context, config *types.Datadog) Registry {
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// Ensures there is only one DataDog client sending metrics at any given time.
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StopDatadog()
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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 = defaultMetricsPrefix
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}
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datadogClient = dogstatsd.New(config.Prefix+".", kitlog.LoggerFunc(func(keyvals ...interface{}) error {
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log.WithoutContext().WithField(log.MetricsProviderName, "datadog").Info(keyvals...)
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return nil
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}))
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initDatadogClient(ctx, config)
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registry := &standardRegistry{
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configReloadsCounter: datadogClient.NewCounter(ddConfigReloadsName, 1.0),
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configReloadsFailureCounter: datadogClient.NewCounter(ddConfigReloadsName, 1.0).With(ddConfigReloadsFailureTagName, "true"),
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lastConfigReloadSuccessGauge: datadogClient.NewGauge(ddLastConfigReloadSuccessName),
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lastConfigReloadFailureGauge: datadogClient.NewGauge(ddLastConfigReloadFailureName),
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tlsCertsNotAfterTimestampGauge: datadogClient.NewGauge(ddTLSCertsNotAfterTimestampName),
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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 = datadogClient.NewCounter(ddEntryPointReqsName, 1.0)
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registry.entryPointReqsTLSCounter = datadogClient.NewCounter(ddEntryPointReqsTLSName, 1.0)
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registry.entryPointReqDurationHistogram, _ = NewHistogramWithScale(datadogClient.NewHistogram(ddEntryPointReqDurationName, 1.0), time.Second)
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registry.entryPointOpenConnsGauge = datadogClient.NewGauge(ddEntryPointOpenConnsName)
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}
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if config.AddRoutersLabels {
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registry.routerEnabled = config.AddRoutersLabels
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registry.routerReqsCounter = datadogClient.NewCounter(ddMetricsRouterReqsName, 1.0)
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registry.routerReqsTLSCounter = datadogClient.NewCounter(ddMetricsRouterReqsTLSName, 1.0)
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registry.routerReqDurationHistogram, _ = NewHistogramWithScale(datadogClient.NewHistogram(ddMetricsRouterReqsDurationName, 1.0), time.Second)
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registry.routerOpenConnsGauge = datadogClient.NewGauge(ddRouterOpenConnsName)
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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 = datadogClient.NewCounter(ddMetricsServiceReqsName, 1.0)
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registry.serviceReqsTLSCounter = datadogClient.NewCounter(ddMetricsServiceReqsTLSName, 1.0)
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registry.serviceReqDurationHistogram, _ = NewHistogramWithScale(datadogClient.NewHistogram(ddMetricsServiceReqsDurationName, 1.0), time.Second)
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registry.serviceRetriesCounter = datadogClient.NewCounter(ddRetriesTotalName, 1.0)
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registry.serviceOpenConnsGauge = datadogClient.NewGauge(ddOpenConnsName)
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registry.serviceServerUpGauge = datadogClient.NewGauge(ddServerUpName)
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}
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return registry
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}
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func initDatadogClient(ctx context.Context, config *types.Datadog) {
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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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ctx, datadogLoopCancelFunc = context.WithCancel(ctx)
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safe.Go(func() {
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ticker := time.NewTicker(time.Duration(config.PushInterval))
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defer ticker.Stop()
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datadogClient.SendLoop(ctx, ticker.C, "udp", address)
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})
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}
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// StopDatadog stops the Datadog metrics pusher.
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func StopDatadog() {
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if datadogLoopCancelFunc != nil {
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datadogLoopCancelFunc()
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datadogLoopCancelFunc = nil
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}
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}
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