VictoriaMetrics/app/vminsert/opentelemetry/request_handler.go
Aliaksandr Valialkin 7832d0800e
app/{vminsert,vmagent}: follow-up after 67a55b89a4
- Document the ability to read OpenTelemetry data from Amazon Firehose at docs/CHANGELOG.md

- Simplify parsing Firehose data. There is no need in trying to optimize the parsing with fastjson
  and byte slice tricks, since OpenTelemetry protocol is really slooow because of over-engineering.
  It is better to write clear code for better maintanability in the future.

- Move Firehose parser from /lib/protoparser/firehose to lib/protoparser/opentelemetry/firehose,
  since it is used only by opentelemetry parser.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/pull/5893
2024-02-29 14:47:20 +02:00

91 lines
3.2 KiB
Go

package opentelemetry
import (
"fmt"
"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"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/opentelemetry/firehose"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/opentelemetry/stream"
"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="opentelemetry"}`)
rowsTenantInserted = tenantmetrics.NewCounterMap(`vm_tenant_inserted_rows_total{type="opentelemetry"}`)
rowsPerInsert = metrics.NewHistogram(`vm_rows_per_insert{type="opentelemetry"}`)
)
// InsertHandler processes opentelemetry metrics.
func InsertHandler(at *auth.Token, req *http.Request) error {
extraLabels, err := parserCommon.GetExtraLabels(req)
if err != nil {
return err
}
isGzipped := req.Header.Get("Content-Encoding") == "gzip"
var processBody func([]byte) ([]byte, error)
if req.Header.Get("Content-Type") == "application/json" {
if req.Header.Get("X-Amz-Firehose-Protocol-Version") != "" {
processBody = firehose.ProcessRequestBody
} else {
return fmt.Errorf("json encoding isn't supported for opentelemetry format. Use protobuf encoding")
}
}
return stream.ParseStream(req.Body, isGzipped, processBody, func(tss []prompbmarshal.TimeSeries) error {
return insertRows(at, tss, extraLabels)
})
}
func insertRows(at *auth.Token, tss []prompbmarshal.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 tss {
ts := &tss[i]
rowsTotal += len(ts.Samples)
ctx.Labels = ctx.Labels[:0]
for _, label := range ts.Labels {
ctx.AddLabel(label.Name, label.Value)
}
for _, label := range extraLabels {
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]
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()
}