VictoriaMetrics/app/vminsert/datadog/request_handler.go

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package datadog
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/prompbmarshal"
parserCommon "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
parser "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/datadog"
"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="datadog"}`)
rowsTenantInserted = tenantmetrics.NewCounterMap(`vm_tenant_inserted_rows_total{type="datadog"}`)
rowsPerInsert = metrics.NewHistogram(`vm_rows_per_insert{type="datadog"}`)
)
// InsertHandlerForHTTP processes remote write for DataDog POST /api/v1/series request.
//
// See https://docs.datadoghq.com/api/latest/metrics/#submit-metrics
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 parser.ParseStream(req.Body, ce, func(series []parser.Series) error {
return insertRows(at, series, extraLabels)
})
}
func insertRows(at *auth.Token, series []parser.Series, extraLabels []prompbmarshal.Label) error {
ctx := netstorage.GetInsertCtx()
defer netstorage.PutInsertCtx(ctx)
ctx.Reset()
rowsTotal := 0
perTenantRows := make(map[auth.Token]int)
hasRelabeling := relabel.HasRelabeling()
for i := range series {
ss := &series[i]
rowsTotal += len(ss.Points)
ctx.Labels = ctx.Labels[:0]
ctx.AddLabel("", ss.Metric)
if ss.Host != "" {
ctx.AddLabel("host", ss.Host)
}
if ss.Device != "" {
ctx.AddLabel("device", ss.Device)
}
for _, tag := range ss.Tags {
name, value := parser.SplitTag(tag)
if name == "host" {
name = "exported_host"
}
ctx.AddLabel(name, 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)
ctx.MetricNameBuf = storage.MarshalMetricNameRaw(ctx.MetricNameBuf[:0], atLocal.AccountID, atLocal.ProjectID, ctx.Labels)
storageNodeIdx := ctx.GetStorageNodeIdx(atLocal, ctx.Labels)
for _, pt := range ss.Points {
timestamp := pt.Timestamp()
value := pt.Value()
if err := ctx.WriteDataPointExt(storageNodeIdx, ctx.MetricNameBuf, timestamp, value); err != nil {
return err
}
}
perTenantRows[*atLocal] += len(ss.Points)
}
rowsInserted.Add(rowsTotal)
rowsTenantInserted.MultiAdd(perTenantRows)
rowsPerInsert.Update(float64(rowsTotal))
return ctx.FlushBufs()
}