telegraf/internal/encoding/json/parser.go

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package json
import (
"encoding/json"
"fmt"
"time"
"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/internal"
"github.com/influxdata/telegraf/internal/encoding"
)
type JsonParser struct {
}
func (p *JsonParser) Parse(buf []byte) ([]telegraf.Metric, error) {
metrics := make([]telegraf.Metric, 0)
var jsonOut interface{}
err := json.Unmarshal(buf, &jsonOut)
if err != nil {
err = fmt.Errorf("unable to parse out as JSON, %s", err)
return nil, err
}
f := internal.JSONFlattener{}
err = f.FlattenJSON("", jsonOut)
if err != nil {
return nil, err
}
metric, err := telegraf.NewMetric("exec", nil, f.Fields, time.Now().UTC())
if err != nil {
return nil, err
}
return append(metrics, metric), nil
}
func (p *JsonParser) ParseLine(line string) (telegraf.Metric, error) {
metrics, err := p.Parse([]byte(line + "\n"))
if err != nil {
return nil, err
}
if len(metrics) < 1 {
return nil, fmt.Errorf("Can not parse the line: %s, for data format: influx ", line)
}
return metrics[0], nil
}
func NewParser() *JsonParser {
return &JsonParser{}
}
func (p *JsonParser) InitConfig(configs map[string]interface{}) error {
return nil
}
func init() {
encoding.Add("json", func() encoding.Parser {
return NewParser()
})
}