telegraf/plugins/trig/trig.go

46 lines
810 B
Go

package trig
import (
"math"
"github.com/influxdb/telegraf/plugins"
)
type Trig struct {
x float64
Amplitude float64
}
var TrigConfig = `
# Set the amplitude
amplitude = 10.0
`
func (s *Trig) SampleConfig() string {
return TrigConfig
}
func (s *Trig) Description() string {
return "Inserts sine and cosine waves for demonstration purposes"
}
func (s *Trig) Gather(acc plugins.Accumulator) error {
sinner := math.Sin((s.x*math.Pi)/5.0) * s.Amplitude
cosinner := math.Cos((s.x*math.Pi)/5.0) * s.Amplitude
fields := make(map[string]interface{})
fields["sine"] = sinner
fields["cosine"] = cosinner
tags := make(map[string]string)
s.x += 1.0
acc.AddFields("trig", fields, tags)
return nil
}
func init() {
plugins.Add("Trig", func() plugins.Plugin { return &Trig{x: 0.0} })
}