mutatingwebhookconfiguration_test.go

/*
Copyright 2019 The Kubernetes Authors All rights reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package store

import (
	"testing"

	admissionregistrationv1 "k8s.io/api/admissionregistration/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"

	generator "k8s.io/kube-state-metrics/v2/pkg/metric_generator"
)

func TestMutatingWebhookConfigurationStore(t *testing.T) {
	startTime := 1501569018
	metav1StartTime := metav1.Unix(int64(startTime), 0)
	externalURL := "example.com"

	cases := []generateMetricsTestCase{
		{
			Obj: &admissionregistrationv1.MutatingWebhookConfiguration{
				ObjectMeta: metav1.ObjectMeta{
					Name:            "mutatingwebhookconfiguration1",
					Namespace:       "ns1",
					ResourceVersion: "123456",
				},
			},
			Want: `
				# HELP kube_mutatingwebhookconfiguration_info Information about the MutatingWebhookConfiguration.
				# HELP kube_mutatingwebhookconfiguration_metadata_resource_version Resource version representing a specific version of the MutatingWebhookConfiguration.
				# TYPE kube_mutatingwebhookconfiguration_info gauge
				# TYPE kube_mutatingwebhookconfiguration_metadata_resource_version gauge
				kube_mutatingwebhookconfiguration_info{mutatingwebhookconfiguration="mutatingwebhookconfiguration1",namespace="ns1"} 1
				kube_mutatingwebhookconfiguration_metadata_resource_version{mutatingwebhookconfiguration="mutatingwebhookconfiguration1",namespace="ns1"} 123456
				`,
			MetricNames: []string{"kube_mutatingwebhookconfiguration_info", "kube_mutatingwebhookconfiguration_metadata_resource_version"},
		},
		{
			Obj: &admissionregistrationv1.MutatingWebhookConfiguration{
				ObjectMeta: metav1.ObjectMeta{
					Name:              "mutatingwebhookconfiguration2",
					Namespace:         "ns2",
					CreationTimestamp: metav1StartTime,
					ResourceVersion:   "abcdef",
				},
			},
			Want: `
			# HELP kube_mutatingwebhookconfiguration_created Unix creation timestamp.
			# HELP kube_mutatingwebhookconfiguration_info Information about the MutatingWebhookConfiguration.
			# HELP kube_mutatingwebhookconfiguration_metadata_resource_version Resource version representing a specific version of the MutatingWebhookConfiguration.
			# TYPE kube_mutatingwebhookconfiguration_created gauge
			# TYPE kube_mutatingwebhookconfiguration_info gauge
			# TYPE kube_mutatingwebhookconfiguration_metadata_resource_version gauge
			kube_mutatingwebhookconfiguration_created{mutatingwebhookconfiguration="mutatingwebhookconfiguration2",namespace="ns2"} 1.501569018e+09
			kube_mutatingwebhookconfiguration_info{mutatingwebhookconfiguration="mutatingwebhookconfiguration2",namespace="ns2"} 1
			`,
			MetricNames: []string{"kube_mutatingwebhookconfiguration_created", "kube_mutatingwebhookconfiguration_info", "kube_mutatingwebhookconfiguration_metadata_resource_version"},
		},
		{
			Obj: &admissionregistrationv1.MutatingWebhookConfiguration{
				ObjectMeta: metav1.ObjectMeta{
					Name:              "mutatingwebhookconfiguration3",
					Namespace:         "ns3",
					CreationTimestamp: metav1StartTime,
					ResourceVersion:   "abcdef",
				},
				Webhooks: []admissionregistrationv1.MutatingWebhook{
					{
						Name: "webhook_with_service",
						ClientConfig: admissionregistrationv1.WebhookClientConfig{
							Service: &admissionregistrationv1.ServiceReference{Name: "svc", Namespace: "ns"},
						},
					},
					{
						Name: "webhook_with_external_url",
						ClientConfig: admissionregistrationv1.WebhookClientConfig{
							URL: &externalURL,
						},
					},
				},
			},
			Want: `
			# HELP kube_mutatingwebhookconfiguration_webhook_clientconfig_service Service used by the apiserver to connect to a mutating webhook.
			# TYPE kube_mutatingwebhookconfiguration_webhook_clientconfig_service gauge
			kube_mutatingwebhookconfiguration_webhook_clientconfig_service{webhook_name="webhook_with_external_url",namespace="ns3",service_name="",service_namespace="",mutatingwebhookconfiguration="mutatingwebhookconfiguration3"} 1
			kube_mutatingwebhookconfiguration_webhook_clientconfig_service{webhook_name="webhook_with_service",namespace="ns3",service_name="svc",service_namespace="ns",mutatingwebhookconfiguration="mutatingwebhookconfiguration3"} 1
			`,
			MetricNames: []string{"kube_mutatingwebhookconfiguration_webhook_clientconfig_service"},
		},
	}
	for i, c := range cases {
		c.Func = generator.ComposeMetricGenFuncs(mutatingWebhookConfigurationMetricFamilies)
		c.Headers = generator.ExtractMetricFamilyHeaders(mutatingWebhookConfigurationMetricFamilies)
		if err := c.run(); err != nil {
			t.Errorf("unexpected collecting result in %vth run:\n%s", i, err)
		}
	}
}