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fix: histogram buckets (#6783)

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Signed-off-by: Charles-Edouard Brétéché <charles.edouard@nirmata.com>
This commit is contained in:
Charles-Edouard Brétéché 2023-04-05 11:58:07 +02:00 • committed by GitHub
parent b9da54e561
commit 6f8ef4fd30
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 31 additions and 1 deletions
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32
pkg/metrics/metrics.go
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@ -18,6 +18,7 @@ import (
"go.opentelemetry.io/otel/metric"
"go.opentelemetry.io/otel/metric/instrument"
sdkmetric "go.opentelemetry.io/otel/sdk/metric"
"go.opentelemetry.io/otel/sdk/metric/aggregation"
"go.opentelemetry.io/otel/sdk/resource"
semconv "go.opentelemetry.io/otel/semconv/v1.17.0"
"k8s.io/client-go/kubernetes"
@ -72,6 +73,34 @@ func ShutDownController(ctx context.Context, pusher *sdkmetric.MeterProvider) {
}
}
func aggregationSelector(ik sdkmetric.InstrumentKind) aggregation.Aggregation {
switch ik {
case sdkmetric.InstrumentKindHistogram:
return aggregation.ExplicitBucketHistogram{
Boundaries: []float64{
0.005,
0.01,
0.025,
0.05,
0.1,
0.25,
0.5,
1,
2.5,
5,
10,
15,
20,
25,
30,
},
NoMinMax: false,
}
default:
return sdkmetric.DefaultAggregationSelector(ik)
}
}
func NewOTLPGRPCConfig(
ctx context.Context,
endpoint string,
@ -79,7 +108,7 @@ func NewOTLPGRPCConfig(
kubeClient kubernetes.Interface,
log logr.Logger,
) (metric.MeterProvider, error) {
options := []otlpmetricgrpc.Option{otlpmetricgrpc.WithEndpoint(endpoint)}
options := []otlpmetricgrpc.Option{otlpmetricgrpc.WithEndpoint(endpoint), otlpmetricgrpc.WithAggregationSelector(aggregationSelector)}
if certs != "" {
// here the certificates are stored as configmaps
transportCreds, err := kube.FetchCert(ctx, certs, kubeClient)
@ -141,6 +170,7 @@ func NewPrometheusConfig(
exporter, err := prometheus.New(
prometheus.WithoutUnits(),
prometheus.WithoutTargetInfo(),
prometheus.WithAggregationSelector(aggregationSelector),
)
if err != nil {
log.Error(err, "failed to initialize prometheus exporter")