telegraf/plugins/processors/override/override.go

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package override
import (
"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/plugins/processors"
)
var sampleConfig = `
## All modifications on inputs and aggregators can be overridden:
# name_override = "new_name"
# name_prefix = "new_name_prefix"
# name_suffix = "new_name_suffix"
## Tags to be added (all values must be strings)
# [processors.override.tags]
# additional_tag = "tag_value"
`
type Override struct {
NameOverride string
NamePrefix string
NameSuffix string
Tags map[string]string
}
func (p *Override) SampleConfig() string {
return sampleConfig
}
func (p *Override) Description() string {
return "Apply metric modifications using override semantics."
}
func (p *Override) Apply(in ...telegraf.Metric) []telegraf.Metric {
for _, metric := range in {
if len(p.NameOverride) > 0 {
metric.SetName(p.NameOverride)
}
if len(p.NamePrefix) > 0 {
metric.AddPrefix(p.NamePrefix)
}
if len(p.NameSuffix) > 0 {
metric.AddSuffix(p.NameSuffix)
}
for key, value := range p.Tags {
metric.AddTag(key, value)
}
}
return in
}
func init() {
processors.Add("override", func() telegraf.Processor {
return &Override{}
})
}