//OutputMetricsIfRequired will send metrics to Graphite if a non-empty graphiteTCPAddress is passed in, or to the standard log if logMetrics is true.
// Make sure a sensible graphitePrefix that will uniquely identify your service is passed in, e.g. "content.test.people.rw.neo4j.ftaps58938-law1a-eu-t
func OutputMetricsIfRequired(graphiteTCPAddress string, graphitePrefix string, logMetrics bool) {
if graphiteTCPAddress != "" {
addr, _ := net.ResolveTCPAddr("tcp", graphiteTCPAddress)
go graphite.Graphite(metrics.DefaultRegistry, 5*time.Second, graphitePrefix, addr)
}
if logMetrics { //useful locally
//messy use of the 'standard' log package here as this method takes the log struct, not an interface, so can't use logrus.Logger
go metrics.Log(metrics.DefaultRegistry, 60*time.Second, standardLog.New(os.Stdout, "metrics", standardLog.Lmicroseconds))
}
}
func startMetric() {
ml, err := os.OpenFile(metricLog, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0644)
if err != nil {
log.Fatal(err)
}
AddShutdownHook(func() {
ml.Close()
})
go metrics.Log(metrics.DefaultRegistry, writeMetricLogInterval, log.New(ml, "", log.LstdFlags))
}
func (p WOFPointInPolygon) SendMetricsTo(w io.Writer, d time.Duration, format string) bool {
var r metrics.Registry
r = *p.Metrics.Registry
if format == "plain" {
l := golog.New(w, "[pip-metrics] ", golog.Lmicroseconds)
go metrics.Log(r, d, l)
return true
} else if format == "json" {
go metrics.WriteJSON(r, d, w)
return true
} else {
p.Logger.Warning("unable to send metrics anywhere, because what is '%s'", format)
return false
}
}
func initStdout(interval time.Duration) error {
logger := log.New(os.Stderr, "localhost: ", log.Lmicroseconds)
go gometrics.Log(gometrics.DefaultRegistry, interval, logger)
go gometrics.Log(ServiceRegistry, interval, logger)
return nil
}
// gmStdoutRegistry returns a go-metrics registry that reports to stdout.
func gmStdoutRegistry(interval time.Duration) (Registry, error) {
logger := log.New(os.Stderr, "localhost: ", log.Lmicroseconds)
r := gm.NewRegistry()
go gm.Log(r, interval, logger)
return &gmRegistry{r}, nil
}