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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"}.
122 lines
3.1 KiB
Go
122 lines
3.1 KiB
Go
package vmimport
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import (
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"net/http"
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"sync"
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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/cgroup"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
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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/vmimport"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/storage"
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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="vmimport"}`)
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rowsPerInsert = metrics.NewHistogram(`vm_rows_per_insert{type="vmimport"}`)
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)
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// InsertHandler processes `/api/v1/import` request.
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//
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// See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/6
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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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return writeconcurrencylimiter.Do(func() error {
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return parser.ParseStream(req, func(rows []parser.Row) error {
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return insertRows(rows, extraLabels)
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})
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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 := getPushCtx()
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defer putPushCtx(ctx)
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rowsLen := 0
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for i := range rows {
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rowsLen += len(rows[i].Values)
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}
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ic := &ctx.Common
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ic.Reset(rowsLen)
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rowsTotal := 0
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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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rowsTotal += len(r.Values)
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ic.Labels = ic.Labels[:0]
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for j := range r.Tags {
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tag := &r.Tags[j]
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ic.AddLabelBytes(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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ic.AddLabel(label.Name, label.Value)
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}
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if hasRelabeling {
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ic.ApplyRelabeling()
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}
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if len(ic.Labels) == 0 {
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// Skip metric without labels.
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continue
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}
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ic.SortLabelsIfNeeded()
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ctx.metricNameBuf = storage.MarshalMetricNameRaw(ctx.metricNameBuf[:0], ic.Labels)
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values := r.Values
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timestamps := r.Timestamps
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if len(timestamps) != len(values) {
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logger.Panicf("BUG: len(timestamps)=%d must match len(values)=%d", len(timestamps), len(values))
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}
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for j, value := range values {
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timestamp := timestamps[j]
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if err := ic.WriteDataPoint(ctx.metricNameBuf, nil, timestamp, value); 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 ic.FlushBufs()
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}
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type pushCtx struct {
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Common common.InsertCtx
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metricNameBuf []byte
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}
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func (ctx *pushCtx) reset() {
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ctx.Common.Reset(0)
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ctx.metricNameBuf = ctx.metricNameBuf[:0]
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}
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func getPushCtx() *pushCtx {
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select {
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case ctx := <-pushCtxPoolCh:
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return ctx
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default:
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if v := pushCtxPool.Get(); v != nil {
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return v.(*pushCtx)
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}
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return &pushCtx{}
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}
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}
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func putPushCtx(ctx *pushCtx) {
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ctx.reset()
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select {
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case pushCtxPoolCh <- ctx:
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default:
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pushCtxPool.Put(ctx)
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}
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}
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var pushCtxPool sync.Pool
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var pushCtxPoolCh = make(chan *pushCtx, cgroup.AvailableCPUs())
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