88 lines
2.4 KiB
Go
88 lines
2.4 KiB
Go
package middlewares
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import (
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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"
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"github.com/go-kit/kit/metrics/statsd"
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)
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var _ Metrics = (*Statsd)(nil)
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var _ RetryMetrics = (*Statsd)(nil)
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var statsdClient = statsd.New("traefik.", kitlog.LoggerFunc(func(keyvals ...interface{}) error {
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log.Info(keyvals)
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return nil
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}))
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var statsdTicker *time.Ticker
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// Statsd is an Implementation for Metrics that exposes statsd metrics for the latency
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// and the number of requests partitioned by status code and method.
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// - number of requests partitioned by status code and method
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// - request durations
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// - amount of retries happened
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type Statsd struct {
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reqsCounter metrics.Counter
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reqDurationHistogram metrics.Histogram
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retryCounter metrics.Counter
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}
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func (s *Statsd) getReqsCounter() metrics.Counter {
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return s.reqsCounter
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}
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func (s *Statsd) getReqDurationHistogram() metrics.Histogram {
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return s.reqDurationHistogram
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}
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func (s *Statsd) getRetryCounter() metrics.Counter {
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return s.retryCounter
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}
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// NewStatsD creates new instance of StatsD
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func NewStatsD(name string) *Statsd {
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var m Statsd
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m.reqsCounter = statsdClient.NewCounter(ddMetricsReqsName, 1.0).With("service", name)
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m.reqDurationHistogram = statsdClient.NewTiming(ddMetricsLatencyName, 1.0).With("service", name)
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m.retryCounter = statsdClient.NewCounter(ddRetriesTotalName, 1.0).With("service", name)
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return &m
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}
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// InitStatsdClient initializes metrics pusher and creates a statsdClient if not created already
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func InitStatsdClient(config *types.Statsd) *time.Ticker {
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if statsdTicker == nil {
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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.Warnf("Unable to parse %s into pushInterval, using 10s as 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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statsdTicker = report
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}
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return statsdTicker
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}
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// StopStatsdClient stops internal statsdTicker which controls the pushing of metrics to StatsD Agent and resets it to `nil`
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func StopStatsdClient() {
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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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