traefik/metrics/datadog.go

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package metrics
import (
"time"
"github.com/containous/traefik/log"
"github.com/containous/traefik/safe"
"github.com/containous/traefik/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.Info(keyvals)
return nil
}))
var datadogTicker *time.Ticker
// Metric names consistent with https://github.com/DataDog/integrations-extras/pull/64
const (
ddMetricsReqsName = "requests.total"
ddMetricsLatencyName = "request.duration"
ddRetriesTotalName = "backend.retries.total"
)
// RegisterDatadog registers the metrics pusher if this didn't happen yet and creates a datadog Registry instance.
func RegisterDatadog(config *types.Datadog) Registry {
if datadogTicker == nil {
datadogTicker = initDatadogClient(config)
}
registry := &standardRegistry{
enabled: true,
backendReqsCounter: datadogClient.NewCounter(ddMetricsReqsName, 1.0),
backendReqDurationHistogram: datadogClient.NewHistogram(ddMetricsLatencyName, 1.0),
backendRetriesCounter: datadogClient.NewCounter(ddRetriesTotalName, 1.0),
}
return registry
}
func initDatadogClient(config *types.Datadog) *time.Ticker {
address := config.Address
if len(address) == 0 {
address = "localhost:8125"
}
pushInterval, err := time.ParseDuration(config.PushInterval)
if err != nil {
log.Warnf("Unable to parse %s into pushInterval, using 10s as default value", config.PushInterval)
pushInterval = 10 * time.Second
}
report := time.NewTicker(pushInterval)
safe.Go(func() {
datadogClient.SendLoop(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
}