VictoriaMetrics/app/vmagent/datadogsketches/request_handler.go
Aliaksandr Valialkin 541b644d3d
app/{vmagent,vminsert}: follow-up after a1d1ccd6f2
- Document the change at docs/CHANGELOG.md
- Copy changes from docs/Single-server-VictoriaMetrics.md to README.md
- Add missing handler for processing multitenant requests ( https://docs.victoriametrics.com/vmagent/#multitenancy )
- Substitute github.com/stretchr/testify dependency with 3 lines of code in the added tests
- Comment unclear code at lib/protoparser/datadogsketches/parser.go , so @AndrewChubatiuk could update it
  and add permalinks to the original source code there.
- Various code cleanups

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/pull/5584
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3091
2024-02-07 01:28:05 +02:00

95 lines
3 KiB
Go

package datadogsketches
import (
"net/http"
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/common"
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/remotewrite"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/auth"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
parserCommon "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/datadogsketches"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/datadogsketches/stream"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/datadogutils"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/tenantmetrics"
"github.com/VictoriaMetrics/metrics"
)
var (
rowsInserted = metrics.NewCounter(`vmagent_rows_inserted_total{type="datadogsketches"}`)
rowsTenantInserted = tenantmetrics.NewCounterMap(`vmagent_tenant_inserted_rows_total{type="datadogsketches"}`)
rowsPerInsert = metrics.NewHistogram(`vmagent_rows_per_insert{type="datadogsketches"}`)
)
// InsertHandlerForHTTP processes remote write for DataDog POST /api/beta/sketches request.
func InsertHandlerForHTTP(at *auth.Token, req *http.Request) error {
extraLabels, err := parserCommon.GetExtraLabels(req)
if err != nil {
return err
}
ce := req.Header.Get("Content-Encoding")
return stream.Parse(req.Body, ce, func(sketches []*datadogsketches.Sketch) error {
return insertRows(at, sketches, extraLabels)
})
}
func insertRows(at *auth.Token, sketches []*datadogsketches.Sketch, extraLabels []prompbmarshal.Label) error {
ctx := common.GetPushCtx()
defer common.PutPushCtx(ctx)
rowsTotal := 0
tssDst := ctx.WriteRequest.Timeseries[:0]
labels := ctx.Labels[:0]
samples := ctx.Samples[:0]
for _, sketch := range sketches {
ms := sketch.ToSummary()
for _, m := range ms {
labelsLen := len(labels)
labels = append(labels, prompbmarshal.Label{
Name: "__name__",
Value: m.Name,
})
for _, label := range m.Labels {
labels = append(labels, prompbmarshal.Label{
Name: label.Name,
Value: label.Value,
})
}
for _, tag := range sketch.Tags {
name, value := datadogutils.SplitTag(tag)
if name == "host" {
name = "exported_host"
}
labels = append(labels, prompbmarshal.Label{
Name: name,
Value: value,
})
}
labels = append(labels, extraLabels...)
samplesLen := len(samples)
for _, p := range m.Points {
samples = append(samples, prompbmarshal.Sample{
Timestamp: p.Timestamp,
Value: p.Value,
})
}
rowsTotal += len(m.Points)
tssDst = append(tssDst, prompbmarshal.TimeSeries{
Labels: labels[labelsLen:],
Samples: samples[samplesLen:],
})
}
}
ctx.WriteRequest.Timeseries = tssDst
ctx.Labels = labels
ctx.Samples = samples
if !remotewrite.TryPush(at, &ctx.WriteRequest) {
return remotewrite.ErrQueueFullHTTPRetry
}
rowsInserted.Add(rowsTotal)
if at != nil {
rowsTenantInserted.Get(at).Add(rowsTotal)
}
rowsPerInsert.Update(float64(rowsTotal))
return nil
}