91 lines
2.4 KiB
Go
91 lines
2.4 KiB
Go
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package metrics
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import (
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"bytes"
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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/influx"
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influxdb "github.com/influxdata/influxdb/client/v2"
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)
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var influxDBClient = influx.New(map[string]string{}, influxdb.BatchPointsConfig{}, 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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type influxDBWriter struct {
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buf bytes.Buffer
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config *types.InfluxDB
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}
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var influxDBTicker *time.Ticker
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const (
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influxDBMetricsReqsName = "traefik.requests.total"
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influxDBMetricsLatencyName = "traefik.request.duration"
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influxDBRetriesTotalName = "traefik.backend.retries.total"
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)
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// RegisterInfluxDB registers the metrics pusher if this didn't happen yet and creates a InfluxDB Registry instance.
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func RegisterInfluxDB(config *types.InfluxDB) Registry {
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if influxDBTicker == nil {
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influxDBTicker = initInfluxDBTicker(config)
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}
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return &standardRegistry{
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enabled: true,
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reqsCounter: influxDBClient.NewCounter(influxDBMetricsReqsName),
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reqDurationHistogram: influxDBClient.NewHistogram(influxDBMetricsLatencyName),
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retriesCounter: influxDBClient.NewCounter(influxDBRetriesTotalName),
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}
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}
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// initInfluxDBTicker initializes metrics pusher and creates a influxDBClient if not created already
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func initInfluxDBTicker(config *types.InfluxDB) *time.Ticker {
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address := config.Address
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if len(address) == 0 {
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address = "localhost:8089"
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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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var buf bytes.Buffer
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influxDBClient.WriteLoop(report.C, &influxDBWriter{buf: buf, config: config})
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})
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return report
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}
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// StopInfluxDB stops internal influxDBTicker which controls the pushing of metrics to InfluxDB Agent and resets it to `nil`
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func StopInfluxDB() {
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if influxDBTicker != nil {
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influxDBTicker.Stop()
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}
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influxDBTicker = nil
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}
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func (w *influxDBWriter) Write(bp influxdb.BatchPoints) error {
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c, err := influxdb.NewUDPClient(influxdb.UDPConfig{
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Addr: w.config.Address,
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})
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if err != nil {
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return err
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}
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defer c.Close()
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return c.Write(bp)
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}
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