73 lines
1.6 KiB
Go
73 lines
1.6 KiB
Go
package final
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import (
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"time"
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"github.com/influxdata/telegraf"
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"github.com/influxdata/telegraf/internal"
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"github.com/influxdata/telegraf/plugins/aggregators"
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)
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var sampleConfig = `
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## The period on which to flush & clear the aggregator.
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period = "30s"
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## If true, the original metric will be dropped by the
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## aggregator and will not get sent to the output plugins.
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drop_original = false
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## The time that a series is not updated until considering it final.
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series_timeout = "5m"
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`
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type Final struct {
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SeriesTimeout internal.Duration `toml:"series_timeout"`
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// The last metric for all series which are active
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metricCache map[uint64]telegraf.Metric
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}
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func NewFinal() *Final {
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return &Final{
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SeriesTimeout: internal.Duration{Duration: 5 * time.Minute},
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metricCache: make(map[uint64]telegraf.Metric),
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}
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}
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func (m *Final) SampleConfig() string {
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return sampleConfig
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}
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func (m *Final) Description() string {
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return "Report the final metric of a series"
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}
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func (m *Final) Add(in telegraf.Metric) {
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id := in.HashID()
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m.metricCache[id] = in
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}
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func (m *Final) Push(acc telegraf.Accumulator) {
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// Preserve timestamp of original metric
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acc.SetPrecision(time.Nanosecond)
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for id, metric := range m.metricCache {
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if time.Since(metric.Time()) > m.SeriesTimeout.Duration {
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fields := map[string]interface{}{}
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for _, field := range metric.FieldList() {
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fields[field.Key+"_final"] = field.Value
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}
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acc.AddFields(metric.Name(), fields, metric.Tags(), metric.Time())
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delete(m.metricCache, id)
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}
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}
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}
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func (m *Final) Reset() {
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}
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func init() {
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aggregators.Add("final", func() telegraf.Aggregator {
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return NewFinal()
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})
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}
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