Sflow rework (#7253)

plugins/inputs/sflow/metricencoder.go

@@ -0,0 +1,46 @@
+package sflow
+
+import (
+	"strconv"
+	"time"
+
+	"github.com/influxdata/telegraf"
+	"github.com/influxdata/telegraf/metric"
+)
+
+func makeMetrics(p *V5Format) ([]telegraf.Metric, error) {
+	now := time.Now()
+	metrics := []telegraf.Metric{}
+	tags := map[string]string{
+		"agent_address": p.AgentAddress.String(),
+	}
+	fields := map[string]interface{}{}
+	for _, sample := range p.Samples {
+		tags["input_ifindex"] = strconv.FormatUint(uint64(sample.SampleData.InputIfIndex), 10)
+		tags["output_ifindex"] = strconv.FormatUint(uint64(sample.SampleData.OutputIfIndex), 10)
+		tags["sample_direction"] = sample.SampleData.SampleDirection
+		tags["source_id_index"] = strconv.FormatUint(uint64(sample.SampleData.SourceIDIndex), 10)
+		tags["source_id_type"] = strconv.FormatUint(uint64(sample.SampleData.SourceIDType), 10)
+		fields["drops"] = sample.SampleData.Drops
+		fields["sampling_rate"] = sample.SampleData.SamplingRate
+
+		for _, flowRecord := range sample.SampleData.FlowRecords {
+			if flowRecord.FlowData != nil {
+				tags2 := flowRecord.FlowData.GetTags()
+				fields2 := flowRecord.FlowData.GetFields()
+				for k, v := range tags {
+					tags2[k] = v
+				}
+				for k, v := range fields {
+					fields2[k] = v
+				}
+				m, err := metric.New("sflow", tags2, fields2, now)
+				if err != nil {
+					return nil, err
+				}
+				metrics = append(metrics, m)
+			}
+		}
+	}
+	return metrics, nil
+}