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Review comments, added metric namespace, moved utility functions, and etc

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This commit is contained in:
Chinmay Chapla 2023-05-31 01:04:57 +00:00
parent 8df1a5e6dc
commit 705c6ff315
3 changed files with 77 additions and 81 deletions
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12
staging/src/k8s.io/apiextensions-apiserver/pkg/apiserver/conversion/metrics.go
View File

@ -99,7 +99,8 @@ const (
)
var (
Metrics = newWebhookConversionMetrics()
Metrics = newWebhookConversionMetrics()
namespace = "apiserver"
)
// WebhookConversionMetrics instruments webhook conversion with prometheus metrics.
@ -111,7 +112,8 @@ type WebhookConversionMetrics struct {
func newWebhookConversionMetrics() *WebhookConversionMetrics {
webhookConversionRequest := metrics.NewCounterVec(
&metrics.CounterOpts{
Name: "webhook_conversion_requests",
Name: "webhook_conversion_request_total",
Namespace: namespace,
Help: "Counter for webhook conversion requests with success/failure and failure error type",
StabilityLevel: metrics.ALPHA,
},
@ -119,8 +121,10 @@ func newWebhookConversionMetrics() *WebhookConversionMetrics {
webhookConversionLatency := metrics.NewHistogramVec(
&metrics.HistogramOpts{
Name: "webhook_conversion_duration_seconds",
Help: "Webhook conversion request latency",
Name: "webhook_conversion_duration_seconds",
Namespace: namespace,
Help: "Webhook conversion request latency",
// 0.001, 0.002, 0.004, .... 16.384 [1ms, 2ms, 4ms, ...., 16,384 ms]
Buckets: metrics.ExponentialBuckets(0.001, 2, 15),
StabilityLevel: metrics.ALPHA,
},

85
staging/src/k8s.io/apiextensions-apiserver/pkg/apiserver/conversion/metrics_test.go
View File

@ -1,5 +1,5 @@
/*
Copyright 2019 The Kubernetes Authors.
Copyright 2023 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
@ -18,11 +18,11 @@ package conversion
import (
"context"
"fmt"
"testing"
"time"
"k8s.io/component-base/metrics"
"k8s.io/component-base/metrics/legacyregistry"
"k8s.io/component-base/metrics/testutil"
)
@ -32,7 +32,6 @@ func TestWebhookConversionMetrics_ObserveWebhookConversionSuccess(t *testing.T)
webhookConversionLatency *metrics.HistogramVec
}
type args struct {
ctx context.Context
elapsed time.Duration
}
tests := []struct {
@ -50,7 +49,6 @@ func TestWebhookConversionMetrics_ObserveWebhookConversionSuccess(t *testing.T)
webhookConversionLatency: Metrics.webhookConversionLatency,
},
args: args{
ctx: context.TODO(),
elapsed: 2 * time.Second,
},
wantLabels: map[string]string{
@ -65,7 +63,6 @@ func TestWebhookConversionMetrics_ObserveWebhookConversionSuccess(t *testing.T)
webhookConversionLatency: Metrics.webhookConversionLatency,
},
args: args{
ctx: context.TODO(),
elapsed: 2 * time.Second,
},
wantLabels: map[string]string{
@ -81,9 +78,9 @@ func TestWebhookConversionMetrics_ObserveWebhookConversionSuccess(t *testing.T)
webhookConversionRequest: tt.fields.webhookConversionRequest,
webhookConversionLatency: tt.fields.webhookConversionLatency,
}
m.ObserveWebhookConversionSuccess(tt.args.ctx, tt.args.elapsed)
expectCounterValue(t, "webhook_conversion_requests", tt.wantLabels, tt.expectedRequestValue)
expectHistogramCountTotal(t, "webhook_conversion_duration_seconds", tt.wantLabels, tt.expectedRequestValue)
m.ObserveWebhookConversionSuccess(context.TODO(), tt.args.elapsed)
testutil.AssertVectorCount(t, fmt.Sprintf("%s_webhook_conversion_request_total", namespace), tt.wantLabels, tt.expectedRequestValue)
testutil.AssertHistogramTotalCount(t, fmt.Sprintf("%s_webhook_conversion_duration_seconds", namespace), tt.wantLabels, tt.expectedRequestValue)
})
}
}
@ -94,7 +91,6 @@ func TestWebhookConversionMetrics_ObserveWebhookConversionFailure(t *testing.T)
webhookConversionLatency *metrics.HistogramVec
}
type args struct {
ctx context.Context
elapsed time.Duration
errorType WebhookConversionErrorType
}
@ -114,7 +110,6 @@ func TestWebhookConversionMetrics_ObserveWebhookConversionFailure(t *testing.T)
webhookConversionLatency: Metrics.webhookConversionLatency,
},
args: args{
ctx: context.TODO(),
elapsed: 2 * time.Second,
errorType: WebhookConversionCallFailure,
},
@ -131,7 +126,6 @@ func TestWebhookConversionMetrics_ObserveWebhookConversionFailure(t *testing.T)
webhookConversionLatency: Metrics.webhookConversionLatency,
},
args: args{
ctx: context.TODO(),
elapsed: 2 * time.Second,
errorType: WebhookConversionMalformedResponseFailure,
},
@ -148,7 +142,6 @@ func TestWebhookConversionMetrics_ObserveWebhookConversionFailure(t *testing.T)
webhookConversionLatency: Metrics.webhookConversionLatency,
},
args: args{
ctx: context.TODO(),
elapsed: 2 * time.Second,
errorType: WebhookConversionPartialResponseFailure,
},
@ -165,7 +158,6 @@ func TestWebhookConversionMetrics_ObserveWebhookConversionFailure(t *testing.T)
webhookConversionLatency: Metrics.webhookConversionLatency,
},
args: args{
ctx: context.TODO(),
elapsed: 2 * time.Second,
errorType: WebhookConversionInvalidConvertedObjectFailure,
},
@ -182,7 +174,6 @@ func TestWebhookConversionMetrics_ObserveWebhookConversionFailure(t *testing.T)
webhookConversionLatency: Metrics.webhookConversionLatency,
},
args: args{
ctx: context.TODO(),
elapsed: 2 * time.Second,
errorType: WebhookConversionNoObjectsReturnedFailure,
},
@ -200,69 +191,9 @@ func TestWebhookConversionMetrics_ObserveWebhookConversionFailure(t *testing.T)
webhookConversionRequest: tt.fields.webhookConversionRequest,
webhookConversionLatency: tt.fields.webhookConversionLatency,
}
m.ObserveWebhookConversionFailure(tt.args.ctx, tt.args.elapsed, tt.args.errorType)
expectCounterValue(t, "webhook_conversion_requests", tt.wantLabels, tt.expectedRequestValue)
expectHistogramCountTotal(t, "webhook_conversion_duration_seconds", tt.wantLabels, tt.expectedRequestValue)
m.ObserveWebhookConversionFailure(context.TODO(), tt.args.elapsed, tt.args.errorType)
testutil.AssertVectorCount(t, fmt.Sprintf("%s_webhook_conversion_request_total", namespace), tt.wantLabels, tt.expectedRequestValue)
testutil.AssertHistogramTotalCount(t, fmt.Sprintf("%s_webhook_conversion_duration_seconds", namespace), tt.wantLabels, tt.expectedRequestValue)
})
}
}
func expectCounterValue(t *testing.T, name string, labelFilter map[string]string, wantCount int) {
metrics, err := legacyregistry.DefaultGatherer.Gather()
if err != nil {
t.Fatalf("Failed to gather metrics: %s", err)
}
counterSum := 0
for _, mf := range metrics {
if mf.GetName() != name {
continue // Ignore other metrics.
}
for _, metric := range mf.GetMetric() {
if !testutil.LabelsMatch(metric, labelFilter) {
continue
}
counterSum += int(metric.GetCounter().GetValue())
}
}
if wantCount != counterSum {
t.Errorf("Wanted count %d, got %d for metric %s with labels %#+v", wantCount, counterSum, name, labelFilter)
for _, mf := range metrics {
if mf.GetName() == name {
for _, metric := range mf.GetMetric() {
t.Logf("\tnear match: %s", metric.String())
}
}
}
}
}
func expectHistogramCountTotal(t *testing.T, name string, labelFilter map[string]string, wantCount int) {
metrics, err := legacyregistry.DefaultGatherer.Gather()
if err != nil {
t.Fatalf("Failed to gather metrics: %s", err)
}
counterSum := 0
for _, mf := range metrics {
if mf.GetName() != name {
continue // Ignore other metrics.
}
for _, metric := range mf.GetMetric() {
if !testutil.LabelsMatch(metric, labelFilter) {
continue
}
counterSum += int(metric.GetHistogram().GetSampleCount())
}
}
if wantCount != counterSum {
t.Errorf("Wanted count %d, got %d for metric %s with labels %#+v", wantCount, counterSum, name, labelFilter)
for _, mf := range metrics {
if mf.GetName() == name {
for _, metric := range mf.GetMetric() {
t.Logf("\tnear match: %s\n", metric.String())
}
}
}
}
}

61
staging/src/k8s.io/component-base/metrics/testutil/testutil.go
View File

@ -19,11 +19,13 @@ package testutil
import (
"fmt"
"io"
"testing"
"github.com/prometheus/client_golang/prometheus/testutil"
apimachineryversion "k8s.io/apimachinery/pkg/version"
"k8s.io/component-base/metrics"
"k8s.io/component-base/metrics/legacyregistry"
)
// CollectAndCompare registers the provided Collector with a newly created
@ -91,3 +93,62 @@ func NewFakeKubeRegistry(ver string) metrics.KubeRegistry {
return metrics.NewKubeRegistry()
}
func AssertVectorCount(t *testing.T, name string, labelFilter map[string]string, wantCount int) {
metrics, err := legacyregistry.DefaultGatherer.Gather()
if err != nil {
t.Fatalf("Failed to gather metrics: %s", err)
}
counterSum := 0
for _, mf := range metrics {
if mf.GetName() != name {
continue // Ignore other metrics.
}
for _, metric := range mf.GetMetric() {
if !LabelsMatch(metric, labelFilter) {
continue
}
counterSum += int(metric.GetCounter().GetValue())
}
}
if wantCount != counterSum {
t.Errorf("Wanted count %d, got %d for metric %s with labels %#+v", wantCount, counterSum, name, labelFilter)
for _, mf := range metrics {
if mf.GetName() == name {
for _, metric := range mf.GetMetric() {
t.Logf("\tnear match: %s", metric.String())
}
}
}
}
}
func AssertHistogramTotalCount(t *testing.T, name string, labelFilter map[string]string, wantCount int) {
metrics, err := legacyregistry.DefaultGatherer.Gather()
if err != nil {
t.Fatalf("Failed to gather metrics: %s", err)
}
counterSum := 0
for _, mf := range metrics {
if mf.GetName() != name {
continue // Ignore other metrics.
}
for _, metric := range mf.GetMetric() {
if !LabelsMatch(metric, labelFilter) {
continue
}
counterSum += int(metric.GetHistogram().GetSampleCount())
}
}
if wantCount != counterSum {
t.Errorf("Wanted count %d, got %d for metric %s with labels %#+v", wantCount, counterSum, name, labelFilter)
for _, mf := range metrics {
if mf.GetName() == name {
for _, metric := range mf.GetMetric() {
t.Logf("\tnear match: %s\n", metric.String())
}
}
}
}
}