func (e *Exec) Gather(acc telegraf.Accumulator) error {
out, err := e.runner.Run(e)
if err != nil {
return err
}
switch e.DataFormat {
case "", "json":
var jsonOut interface{}
err = json.Unmarshal(out, &jsonOut)
if err != nil {
return fmt.Errorf("exec: unable to parse output of '%s' as JSON, %s",
e.Command, err)
}
f := internal.JSONFlattener{}
err = f.FlattenJSON("", jsonOut)
if err != nil {
return err
}
acc.AddFields("exec", f.Fields, nil)
case "influx":
now := time.Now()
metrics, err := telegraf.ParseMetrics(out)
for _, metric := range metrics {
acc.AddFields(metric.Name(), metric.Fields(), metric.Tags(), now)
}
return err
default:
return fmt.Errorf("Unsupported data format: %s. Must be either json "+
"or influx.", e.DataFormat)
}
return nil
}
// parser() reads all incoming messages from the consumer, and parses them into
// influxdb metric points.
func (k *Kafka) parser() {
for {
select {
case <-k.done:
return
case err := <-k.errs:
log.Printf("Kafka Consumer Error: %s\n", err.Error())
case msg := <-k.in:
metrics, err := telegraf.ParseMetrics(msg.Value)
if err != nil {
log.Printf("Could not parse kafka message: %s, error: %s",
string(msg.Value), err.Error())
}
for _, metric := range metrics {
select {
case k.metricC <- metric:
continue
default:
log.Printf("Kafka Consumer buffer is full, dropping a metric." +
" You may want to increase the point_buffer setting")
}
}
if !k.doNotCommitMsgs {
// TODO(cam) this locking can be removed if this PR gets merged:
// https://github.com/wvanbergen/kafka/pull/84
k.Lock()
k.Consumer.CommitUpto(msg)
k.Unlock()
}
}
}
}
func (p *InfluxParser) Parse(buf []byte) ([]telegraf.Metric, error) {
metrics, err := telegraf.ParseMetrics(buf)
if err != nil {
return nil, err
}
return metrics, nil
}