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