VictoriaMetrics/app/vmagent/promremotewrite/request_handler.go
Nikolay 821492bc0b adds extra_label to all import apis (#1007)
* adds extra_label to all import apis,
changes priority for extra_label - now it has priority over original labels

* Update README.md

Co-authored-by: Aliaksandr Valialkin <valyala@gmail.com>

* Update README.md

Co-authored-by: Aliaksandr Valialkin <valyala@gmail.com>

* adds extra labels to vmagent  import api
changes order for adding labels, now its added after user values

* adds tests for extra_label

* import fix

Co-authored-by: Aliaksandr Valialkin <valyala@gmail.com>
2021-01-13 01:07:24 +02:00

76 lines
2.3 KiB
Go

package promremotewrite
import (
"net/http"
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/common"
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmagent/remotewrite"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
"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/writeconcurrencylimiter"
"github.com/VictoriaMetrics/metrics"
)
var (
rowsInserted = metrics.NewCounter(`vmagent_rows_inserted_total{type="promremotewrite"}`)
rowsPerInsert = metrics.NewHistogram(`vmagent_rows_per_insert{type="promremotewrite"}`)
)
// InsertHandler processes remote write for prometheus.
func InsertHandler(req *http.Request) error {
extraLabels, err := parserCommon.GetExtraLabels(req)
if err != nil {
return err
}
return writeconcurrencylimiter.Do(func() error {
return parser.ParseStream(req, func(tss []prompb.TimeSeries) error {
return insertRows(tss, extraLabels)
})
})
}
func insertRows(timeseries []prompb.TimeSeries, 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 i := range timeseries {
ts := &timeseries[i]
rowsTotal += len(ts.Samples)
labelsLen := len(labels)
for i := range ts.Labels {
label := &ts.Labels[i]
labels = append(labels, prompbmarshal.Label{
Name: bytesutil.ToUnsafeString(label.Name),
Value: bytesutil.ToUnsafeString(label.Value),
})
}
labels = append(labels, extraLabels...)
samplesLen := len(samples)
for i := range ts.Samples {
sample := &ts.Samples[i]
samples = append(samples, prompbmarshal.Sample{
Value: sample.Value,
Timestamp: sample.Timestamp,
})
}
tssDst = append(tssDst, prompbmarshal.TimeSeries{
Labels: labels[labelsLen:],
Samples: samples[samplesLen:],
})
}
ctx.WriteRequest.Timeseries = tssDst
ctx.Labels = labels
ctx.Samples = samples
remotewrite.Push(&ctx.WriteRequest)
rowsInserted.Add(rowsTotal)
rowsPerInsert.Update(float64(rowsTotal))
return nil
}