mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
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dc9eafcd02
This option can be useful when samples for the same time series are ingested with distinct order of labels.
For example, metric{k1="v1",k2="v2"} and metric{k2="v2",k1="v1"}.
71 lines
2 KiB
Go
71 lines
2 KiB
Go
package prometheusimport
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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/prometheus"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/writeconcurrencylimiter"
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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="prometheus"}`)
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rowsPerInsert = metrics.NewHistogram(`vm_rows_per_insert{type="prometheus"}`)
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)
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// InsertHandler processes `/api/v1/import/prometheus` request.
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func InsertHandler(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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defaultTimestamp, err := parserCommon.GetTimestamp(req)
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if err != nil {
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return err
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}
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return writeconcurrencylimiter.Do(func() error {
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isGzipped := req.Header.Get("Content-Encoding") == "gzip"
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return parser.ParseStream(req.Body, defaultTimestamp, isGzipped, func(rows []parser.Row) error {
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return insertRows(rows, extraLabels)
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}, nil)
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})
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}
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func insertRows(rows []parser.Row, extraLabels []prompbmarshal.Label) error {
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ctx := common.GetInsertCtx()
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defer common.PutInsertCtx(ctx)
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ctx.Reset(len(rows))
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hasRelabeling := relabel.HasRelabeling()
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for i := range rows {
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r := &rows[i]
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ctx.Labels = ctx.Labels[:0]
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ctx.AddLabel("", r.Metric)
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for j := range r.Tags {
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tag := &r.Tags[j]
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ctx.AddLabel(tag.Key, tag.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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if err := ctx.WriteDataPoint(nil, ctx.Labels, r.Timestamp, r.Value); err != nil {
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return err
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}
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}
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rowsInserted.Add(len(rows))
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rowsPerInsert.Update(float64(len(rows)))
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return ctx.FlushBufs()
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}
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