traefik/pkg/metrics/datadog.go
2019-09-02 03:18:04 -07:00

90 lines
3.4 KiB
Go

package metrics
import (
"context"
"time"
"github.com/containous/traefik/v2/pkg/log"
"github.com/containous/traefik/v2/pkg/safe"
"github.com/containous/traefik/v2/pkg/types"
kitlog "github.com/go-kit/kit/log"
"github.com/go-kit/kit/metrics/dogstatsd"
)
var datadogClient = dogstatsd.New("traefik.", kitlog.LoggerFunc(func(keyvals ...interface{}) error {
log.WithoutContext().WithField(log.MetricsProviderName, "datadog").Info(keyvals)
return nil
}))
var datadogTicker *time.Ticker
// Metric names consistent with https://github.com/DataDog/integrations-extras/pull/64
const (
ddMetricsServiceReqsName = "service.request.total"
ddMetricsServiceLatencyName = "service.request.duration"
ddRetriesTotalName = "service.retries.total"
ddConfigReloadsName = "config.reload.total"
ddConfigReloadsFailureTagName = "failure"
ddLastConfigReloadSuccessName = "config.reload.lastSuccessTimestamp"
ddLastConfigReloadFailureName = "config.reload.lastFailureTimestamp"
ddEntryPointReqsName = "entrypoint.request.total"
ddEntryPointReqDurationName = "entrypoint.request.duration"
ddEntryPointOpenConnsName = "entrypoint.connections.open"
ddOpenConnsName = "service.connections.open"
ddServerUpName = "service.server.up"
)
// RegisterDatadog registers the metrics pusher if this didn't happen yet and creates a datadog Registry instance.
func RegisterDatadog(ctx context.Context, config *types.Datadog) Registry {
if datadogTicker == nil {
datadogTicker = initDatadogClient(ctx, config)
}
registry := &standardRegistry{
configReloadsCounter: datadogClient.NewCounter(ddConfigReloadsName, 1.0),
configReloadsFailureCounter: datadogClient.NewCounter(ddConfigReloadsName, 1.0).With(ddConfigReloadsFailureTagName, "true"),
lastConfigReloadSuccessGauge: datadogClient.NewGauge(ddLastConfigReloadSuccessName),
lastConfigReloadFailureGauge: datadogClient.NewGauge(ddLastConfigReloadFailureName),
}
if config.AddEntryPointsLabels {
registry.epEnabled = config.AddEntryPointsLabels
registry.entryPointReqsCounter = datadogClient.NewCounter(ddEntryPointReqsName, 1.0)
registry.entryPointReqDurationHistogram = datadogClient.NewHistogram(ddEntryPointReqDurationName, 1.0)
registry.entryPointOpenConnsGauge = datadogClient.NewGauge(ddEntryPointOpenConnsName)
}
if config.AddServicesLabels {
registry.svcEnabled = config.AddServicesLabels
registry.serviceReqsCounter = datadogClient.NewCounter(ddMetricsServiceReqsName, 1.0)
registry.serviceReqDurationHistogram = datadogClient.NewHistogram(ddMetricsServiceLatencyName, 1.0)
registry.serviceRetriesCounter = datadogClient.NewCounter(ddRetriesTotalName, 1.0)
registry.serviceOpenConnsGauge = datadogClient.NewGauge(ddOpenConnsName)
registry.serviceServerUpGauge = datadogClient.NewGauge(ddServerUpName)
}
return registry
}
func initDatadogClient(ctx context.Context, config *types.Datadog) *time.Ticker {
address := config.Address
if len(address) == 0 {
address = "localhost:8125"
}
report := time.NewTicker(time.Duration(config.PushInterval))
safe.Go(func() {
datadogClient.SendLoop(ctx, report.C, "udp", address)
})
return report
}
// StopDatadog stops internal datadogTicker which controls the pushing of metrics to DD Agent and resets it to `nil`.
func StopDatadog() {
if datadogTicker != nil {
datadogTicker.Stop()
}
datadogTicker = nil
}