VictoriaMetrics/app/vmagent/opentsdbhttp/request_handler.go
Aliaksandr Valialkin d4cf52f092
app/vmagent: follow-up after 2b22aa1537
- Document the change at docs/CHANGELOG.md
- Move auth token parsing from app/vmagent/opentsdbhttp/ to app/vmagent/main.go,
  since it must be parsed only when multitenancy support is enabled at vmagent side.
  See https://docs.victoriametrics.com/vmagent.html#multitenancy
2022-08-24 16:21:23 +03:00

73 lines
2.2 KiB
Go

package opentsdbhttp
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"
parser "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/opentsdbhttp"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/writeconcurrencylimiter"
"github.com/VictoriaMetrics/metrics"
)
var (
rowsInserted = metrics.NewCounter(`vmagent_rows_inserted_total{type="opentsdbhttp"}`)
rowsPerInsert = metrics.NewHistogram(`vmagent_rows_per_insert{type="opentsdbhttp"}`)
)
// InsertHandler processes HTTP OpenTSDB put requests.
// See http://opentsdb.net/docs/build/html/api_http/put.html
func InsertHandler(at *auth.Token, req *http.Request) error {
extraLabels, err := parserCommon.GetExtraLabels(req)
if err != nil {
return err
}
return writeconcurrencylimiter.Do(func() error {
return parser.ParseStream(req, func(rows []parser.Row) error {
return insertRows(at, rows, extraLabels)
})
})
}
func insertRows(at *auth.Token, rows []parser.Row, extraLabels []prompbmarshal.Label) error {
ctx := common.GetPushCtx()
defer common.PutPushCtx(ctx)
tssDst := ctx.WriteRequest.Timeseries[:0]
labels := ctx.Labels[:0]
samples := ctx.Samples[:0]
for i := range rows {
r := &rows[i]
labelsLen := len(labels)
labels = append(labels, prompbmarshal.Label{
Name: "__name__",
Value: r.Metric,
})
for j := range r.Tags {
tag := &r.Tags[j]
labels = append(labels, prompbmarshal.Label{
Name: tag.Key,
Value: tag.Value,
})
}
labels = append(labels, extraLabels...)
samples = append(samples, prompbmarshal.Sample{
Value: r.Value,
Timestamp: r.Timestamp,
})
tssDst = append(tssDst, prompbmarshal.TimeSeries{
Labels: labels[labelsLen:],
Samples: samples[len(samples)-1:],
})
}
ctx.WriteRequest.Timeseries = tssDst
ctx.Labels = labels
ctx.Samples = samples
remotewrite.Push(at, &ctx.WriteRequest)
rowsInserted.Add(len(rows))
rowsPerInsert.Update(float64(len(rows)))
return nil
}