mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
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90 lines
2.4 KiB
Go
90 lines
2.4 KiB
Go
package datadog
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import (
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"net/http"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vminsert/common"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vminsert/relabel"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
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parserCommon "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
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parser "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/datadog"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/datadog/stream"
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"github.com/VictoriaMetrics/metrics"
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)
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var (
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rowsInserted = metrics.NewCounter(`vm_rows_inserted_total{type="datadog"}`)
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rowsPerInsert = metrics.NewHistogram(`vm_rows_per_insert{type="datadog"}`)
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)
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// InsertHandlerForHTTP processes remote write for DataDog POST /api/v1/series request.
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//
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// See https://docs.datadoghq.com/api/latest/metrics/#submit-metrics
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func InsertHandlerForHTTP(req *http.Request) error {
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extraLabels, err := parserCommon.GetExtraLabels(req)
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if err != nil {
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return err
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}
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ce := req.Header.Get("Content-Encoding")
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return stream.Parse(req.Body, ce, func(series []parser.Series) error {
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return insertRows(series, extraLabels)
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})
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}
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func insertRows(series []parser.Series, extraLabels []prompbmarshal.Label) error {
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ctx := common.GetInsertCtx()
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defer common.PutInsertCtx(ctx)
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rowsLen := 0
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for i := range series {
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rowsLen += len(series[i].Points)
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}
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ctx.Reset(rowsLen)
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rowsTotal := 0
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hasRelabeling := relabel.HasRelabeling()
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for i := range series {
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ss := &series[i]
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rowsTotal += len(ss.Points)
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ctx.Labels = ctx.Labels[:0]
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ctx.AddLabel("", ss.Metric)
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if ss.Host != "" {
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ctx.AddLabel("host", ss.Host)
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}
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if ss.Device != "" {
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ctx.AddLabel("device", ss.Device)
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}
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for _, tag := range ss.Tags {
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name, value := parser.SplitTag(tag)
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if name == "host" {
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name = "exported_host"
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}
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ctx.AddLabel(name, value)
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}
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for j := range extraLabels {
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label := &extraLabels[j]
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ctx.AddLabel(label.Name, label.Value)
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}
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if hasRelabeling {
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ctx.ApplyRelabeling()
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}
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if len(ctx.Labels) == 0 {
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// Skip metric without labels.
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continue
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}
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ctx.SortLabelsIfNeeded()
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var metricNameRaw []byte
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var err error
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for _, pt := range ss.Points {
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timestamp := pt.Timestamp()
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value := pt.Value()
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metricNameRaw, err = ctx.WriteDataPointExt(metricNameRaw, ctx.Labels, timestamp, value)
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if err != nil {
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return err
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}
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}
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}
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rowsInserted.Add(rowsTotal)
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rowsPerInsert.Update(float64(rowsTotal))
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return ctx.FlushBufs()
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}
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