VictoriaMetrics/app/vmagent/remotewrite/relabel_test.go
Aliaksandr Valialkin be5673c39d
app/vmagent/remotewrite: follow-up after a27c2f3773
- Fix Prometheus-compatible naming after applying the relabeling if -usePromCompatibleNaming command-line flag is set.
  This should prevent from possible Prometheus-incompatible metric names and label names generated by the relabeling.
- Do not return anything from relabelCtx.appendExtraLabels() function, since it cannot change the number of time series
  passed to it. Append labels for the passed time series in-place.
- Remove promrelabel.FinalizeLabels() call after adding extra labels to time series, since this call has been already
  made at relabelCtx.applyRelabeling(). It is user's responsibility if he passes labels with double underscore prefixes
  to -remoteWrite.label.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4247
2023-08-17 14:47:28 +02:00

68 lines
2 KiB
Go

package remotewrite
import (
"reflect"
"testing"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/prompbmarshal"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/promrelabel"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/promutils"
)
func TestApplyRelabeling(t *testing.T) {
f := func(pcs *promrelabel.ParsedConfigs, sTss, sExpTss string) {
rctx := &relabelCtx{}
tss, expTss := parseSeries(sTss), parseSeries(sExpTss)
gotTss := rctx.applyRelabeling(tss, pcs)
if !reflect.DeepEqual(gotTss, expTss) {
t.Fatalf("expected to have: \n%v;\ngot: \n%v", expTss, gotTss)
}
}
f(nil, "up", "up")
pcs, err := promrelabel.ParseRelabelConfigsData([]byte(`
- target_label: "foo"
replacement: "aaa"
- action: labeldrop
regex: "env.*"
`))
if err != nil {
t.Fatalf("unexpected error: %s", err)
}
f(pcs, `up{foo="baz", env="prod"}`, `up{foo="aaa"}`)
oldVal := *usePromCompatibleNaming
*usePromCompatibleNaming = true
f(nil, `foo.bar`, `foo_bar`)
*usePromCompatibleNaming = oldVal
}
func TestAppendExtraLabels(t *testing.T) {
f := func(extraLabels []prompbmarshal.Label, sTss, sExpTss string) {
rctx := &relabelCtx{}
tss, expTss := parseSeries(sTss), parseSeries(sExpTss)
rctx.appendExtraLabels(tss, extraLabels)
if !reflect.DeepEqual(tss, expTss) {
t.Fatalf("expected to have: \n%v;\ngot: \n%v", expTss, tss)
}
}
f(nil, "up", "up")
f([]prompbmarshal.Label{{Name: "foo", Value: "bar"}}, "up", `up{foo="bar"}`)
f([]prompbmarshal.Label{{Name: "foo", Value: "bar"}}, `up{foo="baz"}`, `up{foo="bar"}`)
f([]prompbmarshal.Label{{Name: "baz", Value: "qux"}}, `up{foo="baz"}`, `up{foo="baz",baz="qux"}`)
oldVal := *usePromCompatibleNaming
*usePromCompatibleNaming = true
f([]prompbmarshal.Label{{Name: "foo.bar", Value: "baz"}}, "up", `up{foo_bar="baz"}`)
*usePromCompatibleNaming = oldVal
}
func parseSeries(data string) []prompbmarshal.TimeSeries {
var tss []prompbmarshal.TimeSeries
tss = append(tss, prompbmarshal.TimeSeries{
Labels: promutils.MustNewLabelsFromString(data).GetLabels(),
})
return tss
}