mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-30 07:40:06 +01:00
122 lines
3.9 KiB
Go
122 lines
3.9 KiB
Go
package common
|
|
|
|
import (
|
|
"flag"
|
|
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmstorage"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/fasttime"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/promrelabel"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/storage"
|
|
"github.com/VictoriaMetrics/VictoriaMetrics/lib/streamaggr"
|
|
)
|
|
|
|
var (
|
|
streamAggrConfig = flag.String("streamAggr.config", "", "Optional path to file with stream aggregation config. "+
|
|
"See https://docs.victoriametrics.com/stream-aggregation.html . "+
|
|
"See also -remoteWrite.streamAggr.keepInput and -streamAggr.dedupInterval")
|
|
streamAggrKeepInput = flag.Bool("streamAggr.keepInput", false, "Whether to keep input samples after the aggregation with -streamAggr.config. "+
|
|
"By default the input is dropped after the aggregation, so only the aggregate data is stored. "+
|
|
"See https://docs.victoriametrics.com/stream-aggregation.html")
|
|
streamAggrDedupInterval = flag.Duration("streamAggr.dedupInterval", 0, "Input samples are de-duplicated with this interval before being aggregated. "+
|
|
"Only the last sample per each time series per each interval is aggregated if the interval is greater than zero")
|
|
)
|
|
|
|
// InitStreamAggr must be called after flag.Parse and before using the common package.
|
|
//
|
|
// MustStopStreamAggr must be called when stream aggr is no longer needed.
|
|
func InitStreamAggr() {
|
|
if *streamAggrConfig == "" {
|
|
// Nothing to initialize
|
|
return
|
|
}
|
|
a, err := streamaggr.LoadFromFile(*streamAggrConfig, pushAggregateSeries, *streamAggrDedupInterval)
|
|
if err != nil {
|
|
logger.Fatalf("cannot load -streamAggr.config=%q: %s", *streamAggrConfig, err)
|
|
}
|
|
sa = a
|
|
}
|
|
|
|
// MustStopStreamAggr stops stream aggregators.
|
|
func MustStopStreamAggr() {
|
|
sa.MustStop()
|
|
sa = nil
|
|
}
|
|
|
|
var sa *streamaggr.Aggregators
|
|
|
|
type streamAggrCtx struct {
|
|
mn storage.MetricName
|
|
tss [1]prompbmarshal.TimeSeries
|
|
}
|
|
|
|
func (ctx *streamAggrCtx) Reset() {
|
|
ctx.mn.Reset()
|
|
ts := &ctx.tss[0]
|
|
promrelabel.CleanLabels(ts.Labels)
|
|
}
|
|
|
|
func (ctx *streamAggrCtx) push(mrs []storage.MetricRow) {
|
|
mn := &ctx.mn
|
|
tss := ctx.tss[:]
|
|
ts := &tss[0]
|
|
labels := ts.Labels
|
|
samples := ts.Samples
|
|
for _, mr := range mrs {
|
|
if err := mn.UnmarshalRaw(mr.MetricNameRaw); err != nil {
|
|
logger.Panicf("BUG: cannot unmarshal recently marshaled MetricName: %s", err)
|
|
}
|
|
|
|
labels = append(labels[:0], prompbmarshal.Label{
|
|
Name: "__name__",
|
|
Value: bytesutil.ToUnsafeString(mn.MetricGroup),
|
|
})
|
|
for _, tag := range mn.Tags {
|
|
labels = append(labels, prompbmarshal.Label{
|
|
Name: bytesutil.ToUnsafeString(tag.Key),
|
|
Value: bytesutil.ToUnsafeString(tag.Value),
|
|
})
|
|
}
|
|
|
|
samples = append(samples[:0], prompbmarshal.Sample{
|
|
Timestamp: mr.Timestamp,
|
|
Value: mr.Value,
|
|
})
|
|
|
|
ts.Labels = labels
|
|
ts.Samples = samples
|
|
|
|
sa.Push(tss)
|
|
}
|
|
}
|
|
|
|
func pushAggregateSeries(tss []prompbmarshal.TimeSeries) {
|
|
currentTimestamp := int64(fasttime.UnixTimestamp()) * 1000
|
|
var ctx InsertCtx
|
|
ctx.Reset(len(tss))
|
|
ctx.skipStreamAggr = true
|
|
for _, ts := range tss {
|
|
labels := ts.Labels
|
|
for _, label := range labels {
|
|
name := label.Name
|
|
if name == "__name__" {
|
|
name = ""
|
|
}
|
|
ctx.AddLabel(name, label.Value)
|
|
}
|
|
value := ts.Samples[0].Value
|
|
if err := ctx.WriteDataPoint(nil, ctx.Labels, currentTimestamp, value); err != nil {
|
|
logger.Errorf("cannot store aggregate series: %s", err)
|
|
// Do not continue pushing the remaining samples, since it is likely they will return the same error.
|
|
return
|
|
}
|
|
}
|
|
// There is no need in limiting the number of concurrent calls to vmstorage.AddRows() here,
|
|
// since the number of concurrent pushAggregateSeries() calls should be already limited by lib/streamaggr.
|
|
if err := vmstorage.AddRows(ctx.mrs); err != nil {
|
|
logger.Errorf("cannot flush aggregate series: %s", err)
|
|
}
|
|
}
|