VictoriaMetrics/app/vminsert/promremotewrite/request_handler.go

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package promremotewrite
import (
"net/http"
"github.com/VictoriaMetrics/VictoriaMetrics/app/vminsert/netstorage"
"github.com/VictoriaMetrics/VictoriaMetrics/app/vminsert/relabel"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/auth"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompb"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
parserCommon "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
parser "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/promremotewrite"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/storage"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/tenantmetrics"
"github.com/VictoriaMetrics/metrics"
)
var (
rowsInserted = metrics.NewCounter(`vm_rows_inserted_total{type="promremotewrite"}`)
rowsTenantInserted = tenantmetrics.NewCounterMap(`vm_tenant_inserted_rows_total{type="promremotewrite"}`)
rowsPerInsert = metrics.NewHistogram(`vm_rows_per_insert{type="promremotewrite"}`)
)
// InsertHandler processes remote write for prometheus.
func InsertHandler(at *auth.Token, req *http.Request) error {
extraLabels, err := parserCommon.GetExtraLabels(req)
if err != nil {
return err
}
return parser.ParseStream(req.Body, func(tss []prompb.TimeSeries) error {
return insertRows(at, tss, extraLabels)
})
}
func insertRows(at *auth.Token, timeseries []prompb.TimeSeries, extraLabels []prompbmarshal.Label) error {
ctx := netstorage.GetInsertCtx()
defer netstorage.PutInsertCtx(ctx)
ctx.Reset() // This line is required for initializing ctx internals.
rowsTotal := 0
perTenantRows := make(map[auth.Token]int)
hasRelabeling := relabel.HasRelabeling()
for i := range timeseries {
ts := &timeseries[i]
rowsTotal += len(ts.Samples)
ctx.Labels = ctx.Labels[:0]
srcLabels := ts.Labels
for _, srcLabel := range srcLabels {
ctx.AddLabelBytes(srcLabel.Name, srcLabel.Value)
}
for j := range extraLabels {
label := &extraLabels[j]
ctx.AddLabel(label.Name, label.Value)
}
if hasRelabeling {
ctx.ApplyRelabeling()
}
if len(ctx.Labels) == 0 {
// Skip metric without labels.
continue
}
ctx.SortLabelsIfNeeded()
atLocal := ctx.GetLocalAuthToken(at)
storageNodeIdx := ctx.GetStorageNodeIdx(atLocal, ctx.Labels)
ctx.MetricNameBuf = ctx.MetricNameBuf[:0]
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samples := ts.Samples
for i := range samples {
r := &samples[i]
if len(ctx.MetricNameBuf) == 0 {
ctx.MetricNameBuf = storage.MarshalMetricNameRaw(ctx.MetricNameBuf[:0], atLocal.AccountID, atLocal.ProjectID, ctx.Labels)
}
if err := ctx.WriteDataPointExt(storageNodeIdx, ctx.MetricNameBuf, r.Timestamp, r.Value); err != nil {
return err
}
}
perTenantRows[*atLocal] += len(ts.Samples)
}
rowsInserted.Add(rowsTotal)
rowsTenantInserted.MultiAdd(perTenantRows)
rowsPerInsert.Update(float64(rowsTotal))
return ctx.FlushBufs()
}