Refactor the architecture of encoding parsers.

internal/encoding/influx/parser.go

@@ -0,0 +1,48 @@
+package influx
+
+import (
+	"fmt"
+
+	"github.com/influxdata/telegraf"
+	"github.com/influxdata/telegraf/internal/encoding"
+)
+
+type InfluxParser struct {
+}
+
+func (p *InfluxParser) Parse(buf []byte) ([]telegraf.Metric, error) {
+	metrics, err := telegraf.ParseMetrics(buf)
+
+	if err != nil {
+		return nil, err
+	}
+	return metrics, nil
+}
+
+func (p *InfluxParser) 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() *InfluxParser {
+	return &InfluxParser{}
+}
+
+func (p *InfluxParser) InitConfig(configs map[string]interface{}) error {
+	return nil
+}
+
+func init() {
+	encoding.Add("influx", func() encoding.Parser {
+		return NewParser()
+	})
+}