VictoriaMetrics/app/vmagent/graphite/request_handler.go
Aliaksandr Valialkin 85fcefaa34
app/vmagent: code cleanup for Kafka and Google PubSub consumers / producers
- Add links to relevant docs into descriptions for every -kafka.* and -gcp.pubsub.* command-line flags.
- Wait until message processing goroutines are stopped before returning from gcppubsub.Stop().
- Prevent from multiple calls to Init() without Stop().
- Drop message if tenantID cannot be parsed properly.
- Take into account tenantID for all the supported message formats.
- Support gzip-compressed messages for graphite format.
- Use exponential backoff sleep when the message cannot be pushed to remote storage systems
  because of disabled on-disk persistence - https://docs.victoriametrics.com/vmagent.html#disabling-on-disk-persistence
- Unblock from sleep as soon as Stop() is called. Previously the sleep could take up to 2 seconds after Stop() is called.
- Remove unused globalCtx and initContext from app/vmagent/remotewrite/gcppubsub
- Mention Google PubSub support at docs/enterprise.md
- Make Google PubSub docs more clear at docs/vmagent.md

This is a follow-up for commits 115245924a5f096c5a3383d6cc8e8b6fbd421984
and e6eab781ce42285a6a1750dc01eba6801dd35516 .

Updates https://github.com/VictoriaMetrics/VictoriaMetrics-enterprise/pull/717
Updates https://github.com/VictoriaMetrics/VictoriaMetrics-enterprise/pull/713
2023-12-04 22:51:04 +02:00

78 lines
2.3 KiB
Go

package graphite
import (
"io"
"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"
parser "github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/graphite"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/protoparser/graphite/stream"
"github.com/VictoriaMetrics/metrics"
)
var (
rowsInserted = metrics.NewCounter(`vmagent_rows_inserted_total{type="graphite"}`)
rowsPerInsert = metrics.NewHistogram(`vmagent_rows_per_insert{type="graphite"}`)
)
// InsertHandler processes remote write for graphite plaintext protocol.
//
// See https://graphite.readthedocs.io/en/latest/feeding-carbon.html#the-plaintext-protocol
func InsertHandler(r io.Reader) error {
return stream.Parse(r, false, func(rows []parser.Row) error {
return insertRows(nil, rows)
})
}
// InsertHandlerForReader processes remote write for graphite plaintext protocol.
//
// See https://graphite.readthedocs.io/en/latest/feeding-carbon.html#the-plaintext-protocol
func InsertHandlerForReader(at *auth.Token, r io.Reader, isGzipped bool) error {
return stream.Parse(r, isGzipped, func(rows []parser.Row) error {
return insertRows(at, rows)
})
}
func insertRows(at *auth.Token, rows []parser.Row) 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,
})
}
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
if !remotewrite.TryPush(at, &ctx.WriteRequest) {
return remotewrite.ErrQueueFullHTTPRetry
}
rowsInserted.Add(len(rows))
rowsPerInsert.Update(float64(len(rows)))
return nil
}