VictoriaMetrics/app/vminsert/prometheusimport/request_handler.go

49 lines
1.3 KiB
Go

package prometheusimport
import (
"net/http"
"github.com/VictoriaMetrics/VictoriaMetrics/app/vminsert/common"
parser "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/prometheus"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/writeconcurrencylimiter"
"github.com/VictoriaMetrics/metrics"
)
var (
rowsInserted = metrics.NewCounter(`vm_rows_inserted_total{type="prometheus"}`)
rowsPerInsert = metrics.NewHistogram(`vm_rows_per_insert{type="prometheus"}`)
)
// InsertHandler processes `/api/v1/import/prometheus` request.
func InsertHandler(req *http.Request) error {
return writeconcurrencylimiter.Do(func() error {
isGzipped := req.Header.Get("Content-Encoding") == "gzip"
return parser.ParseStream(req.Body, isGzipped, insertRows)
})
}
func insertRows(rows []parser.Row) error {
ctx := common.GetInsertCtx()
defer common.PutInsertCtx(ctx)
ctx.Reset(len(rows))
for i := range rows {
r := &rows[i]
ctx.Labels = ctx.Labels[:0]
ctx.AddLabel("", r.Metric)
for j := range r.Tags {
tag := &r.Tags[j]
ctx.AddLabel(tag.Key, tag.Value)
}
ctx.ApplyRelabeling()
if len(ctx.Labels) == 0 {
// Skip metric without labels.
continue
}
ctx.WriteDataPoint(nil, ctx.Labels, r.Timestamp, r.Value)
}
rowsInserted.Add(len(rows))
rowsPerInsert.Update(float64(len(rows)))
return ctx.FlushBufs()
}