Live: Telegraf input modifiers (#32982)

pkg/services/live/convert/convert.go

@@ -0,0 +1,46 @@
+package convert
+
+import (
+	"errors"
+	"fmt"
+
+	"github.com/grafana/grafana-live-sdk/telemetry"
+	"github.com/grafana/grafana-live-sdk/telemetry/telegraf"
+)
+
+type Converter struct {
+	telegrafConverterWide         *telegraf.Converter
+	telegrafConverterLabelsColumn *telegraf.Converter
+}
+
+func NewConverter() *Converter {
+	return &Converter{
+		telegrafConverterWide: telegraf.NewConverter(
+			telegraf.WithFloat64Numbers(true),
+		),
+		telegrafConverterLabelsColumn: telegraf.NewConverter(
+			telegraf.WithUseLabelsColumn(true),
+			telegraf.WithFloat64Numbers(true),
+		),
+	}
+}
+
+var ErrUnsupportedFrameFormat = errors.New("unsupported frame format")
+
+func (c *Converter) Convert(data []byte, frameFormat string) ([]telemetry.FrameWrapper, error) {
+	var converter telemetry.Converter
+	switch frameFormat {
+	case "wide":
+		converter = c.telegrafConverterWide
+	case "labels_column":
+		converter = c.telegrafConverterLabelsColumn
+	default:
+		return nil, ErrUnsupportedFrameFormat
+	}
+
+	metricFrames, err := converter.Convert(data)
+	if err != nil {
+		return nil, fmt.Errorf("error converting metrics: %w", err)
+	}
+	return metricFrames, nil
+}