telegraf/plugins/inputs/trig/trig.go

47 lines
854 B
Go
Raw Normal View History

2015-12-01 00:29:55 +00:00
package trig
import (
"math"
"github.com/influxdata/telegraf"
2016-01-20 18:57:35 +00:00
"github.com/influxdata/telegraf/plugins/inputs"
2015-12-01 00:29:55 +00:00
)
type Trig struct {
x float64
Amplitude float64
}
var TrigConfig = `
## Set the amplitude
2015-12-01 00:29:55 +00:00
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 telegraf.Accumulator) error {
2015-12-01 00:29:55 +00:00
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() {
inputs.Add("trig", func() telegraf.Input { return &Trig{x: 0.0} })
2015-12-01 00:29:55 +00:00
}