mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-22 08:26:19 +01:00
100 lines
3.0 KiB
Go
100 lines
3.0 KiB
Go
package opentelemetry
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import (
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"fmt"
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"net/http"
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"time"
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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/httpserver"
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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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"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/opentelemetry/firehose"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/opentelemetry/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="opentelemetry"}`)
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rowsPerInsert = metrics.NewHistogram(`vm_rows_per_insert{type="opentelemetry"}`)
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)
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// WriteResponseFn function to write HTTP response data
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type WriteResponseFn func(http.ResponseWriter, time.Time, error)
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// InsertHandler processes opentelemetry metrics.
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func InsertHandler(req *http.Request) (WriteResponseFn, error) {
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isGzipped := req.Header.Get("Content-Encoding") == "gzip"
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var processBody func([]byte) ([]byte, error)
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writeResponse := func(w http.ResponseWriter, _ time.Time, err error) {
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if err == nil {
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w.WriteHeader(http.StatusOK)
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} else {
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httpserver.Errorf(w, req, "%s", err)
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}
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}
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if req.Header.Get("Content-Type") == "application/json" {
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if fhRequestID := req.Header.Get("X-Amz-Firehose-Request-Id"); fhRequestID != "" {
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processBody = firehose.ProcessRequestBody
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writeResponse = func(w http.ResponseWriter, t time.Time, err error) {
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firehose.ResponseWriter(w, t, fhRequestID, err)
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}
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} else {
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return writeResponse, fmt.Errorf("json encoding isn't supported for opentelemetry format. Use protobuf encoding")
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}
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}
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extraLabels, err := parserCommon.GetExtraLabels(req)
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if err != nil {
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return writeResponse, err
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}
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return writeResponse, stream.ParseStream(req.Body, isGzipped, processBody, func(tss []prompbmarshal.TimeSeries) error {
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return insertRows(tss, extraLabels)
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})
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}
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func insertRows(tss []prompbmarshal.TimeSeries, 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 tss {
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rowsLen += len(tss[i].Samples)
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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 tss {
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ts := &tss[i]
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rowsTotal += len(ts.Samples)
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ctx.Labels = ctx.Labels[:0]
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for _, label := range ts.Labels {
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ctx.AddLabel(label.Name, label.Value)
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}
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for _, label := range extraLabels {
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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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samples := ts.Samples
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for i := range samples {
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r := &samples[i]
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metricNameRaw, err = ctx.WriteDataPointExt(metricNameRaw, ctx.Labels, r.Timestamp, r.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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