87 lines
2.4 KiB
Go
87 lines
2.4 KiB
Go
package middlewares
|
|
|
|
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"
|
|
"github.com/go-kit/kit/metrics/statsd"
|
|
)
|
|
|
|
var _ Metrics = (*Statsd)(nil)
|
|
var _ RetryMetrics = (*Statsd)(nil)
|
|
|
|
var statsdClient = statsd.New("traefik.", kitlog.LoggerFunc(func(keyvals ...interface{}) error {
|
|
log.Info(keyvals)
|
|
return nil
|
|
}))
|
|
var statsdTicker *time.Ticker
|
|
|
|
// Statsd is an Implementation for Metrics that exposes statsd metrics for the latency
|
|
// and the number of requests partitioned by status code and method.
|
|
// - number of requests partitioned by status code and method
|
|
// - request durations
|
|
// - amount of retries happened
|
|
type Statsd struct {
|
|
reqsCounter metrics.Counter
|
|
reqDurationHistogram metrics.Histogram
|
|
retryCounter metrics.Counter
|
|
}
|
|
|
|
func (s *Statsd) getReqsCounter() metrics.Counter {
|
|
return s.reqsCounter
|
|
}
|
|
|
|
func (s *Statsd) getReqDurationHistogram() metrics.Histogram {
|
|
return s.reqDurationHistogram
|
|
}
|
|
|
|
func (s *Statsd) getRetryCounter() metrics.Counter {
|
|
return s.retryCounter
|
|
}
|
|
|
|
// NewStatsD creates new instance of StatsD
|
|
func NewStatsD(name string) *Statsd {
|
|
var m Statsd
|
|
|
|
m.reqsCounter = statsdClient.NewCounter(ddMetricsReqsName, 1.0).With("service", name)
|
|
m.reqDurationHistogram = statsdClient.NewTiming(ddMetricsLatencyName, 1.0).With("service", name)
|
|
m.retryCounter = statsdClient.NewCounter(ddRetriesTotalName, 1.0).With("service", name)
|
|
|
|
return &m
|
|
}
|
|
|
|
// InitStatsdClient initializes metrics pusher and creates a statsdClient if not created already
|
|
func InitStatsdClient(config *types.Statsd) *time.Ticker {
|
|
if statsdTicker == nil {
|
|
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() {
|
|
statsdClient.SendLoop(report.C, "udp", address)
|
|
})
|
|
|
|
statsdTicker = report
|
|
}
|
|
return statsdTicker
|
|
}
|
|
|
|
// StopStatsdClient stops internal statsdTicker which controls the pushing of metrics to StatsD Agent and resets it to `nil`
|
|
func StopStatsdClient() {
|
|
if statsdTicker != nil {
|
|
statsdTicker.Stop()
|
|
}
|
|
statsdTicker = nil
|
|
}
|