VictoriaMetrics/app/vmagent/vmimport/request_handler.go

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package vmimport
import (
"io"
"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/bytesutil"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
parserCommon "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/common"
parser "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/vmimport"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/tenantmetrics"
"github.com/VictoriaMetrics/metrics"
)
var (
rowsInserted = metrics.NewCounter(`vmagent_rows_inserted_total{type="vmimport"}`)
rowsTenantInserted = tenantmetrics.NewCounterMap(`vmagent_tenant_inserted_rows_total{type="vmimport"}`)
rowsPerInsert = metrics.NewHistogram(`vmagent_rows_per_insert{type="vmimport"}`)
)
// InsertHandler processes `/api/v1/import` request.
//
// See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/6
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"
return parser.ParseStream(req.Body, isGzipped, func(rows []parser.Row) error {
return insertRows(at, rows, extraLabels)
})
}
// InsertHandlerForReader processes metrics from given reader
func InsertHandlerForReader(r io.Reader, isGzipped bool) error {
return parser.ParseStream(r, isGzipped, func(rows []parser.Row) error {
return insertRows(nil, rows, nil)
})
}
func insertRows(at *auth.Token, rows []parser.Row, 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 rows {
r := &rows[i]
rowsTotal += len(r.Values)
labelsLen := len(labels)
for j := range r.Tags {
tag := &r.Tags[j]
labels = append(labels, prompbmarshal.Label{
Name: bytesutil.ToUnsafeString(tag.Key),
Value: bytesutil.ToUnsafeString(tag.Value),
})
}
labels = append(labels, extraLabels...)
values := r.Values
timestamps := r.Timestamps
if len(timestamps) != len(values) {
logger.Panicf("BUG: len(timestamps)=%d must match len(values)=%d", len(timestamps), len(values))
}
samplesLen := len(samples)
for j, value := range values {
samples = append(samples, prompbmarshal.Sample{
Value: value,
Timestamp: timestamps[j],
})
}
tssDst = append(tssDst, prompbmarshal.TimeSeries{
Labels: labels[labelsLen:],
Samples: samples[samplesLen:],
})
}
ctx.WriteRequest.Timeseries = tssDst
ctx.Labels = labels
ctx.Samples = samples
remotewrite.Push(at, &ctx.WriteRequest)
rowsInserted.Add(rowsTotal)
if at != nil {
rowsTenantInserted.Get(at).Add(rowsTotal)
}
rowsPerInsert.Update(float64(rowsTotal))
return nil
}