138 lines
4.6 KiB
Go
138 lines
4.6 KiB
Go
/*
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Copyright 2019 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package store
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import (
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"context"
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admissionregistrationv1 "k8s.io/api/admissionregistration/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/watch"
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clientset "k8s.io/client-go/kubernetes"
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"k8s.io/client-go/tools/cache"
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basemetrics "k8s.io/component-base/metrics"
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"k8s.io/kube-state-metrics/v2/pkg/metric"
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generator "k8s.io/kube-state-metrics/v2/pkg/metric_generator"
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)
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var (
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descMutatingWebhookConfigurationDefaultLabels = []string{"namespace", "mutatingwebhookconfiguration"}
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mutatingWebhookConfigurationMetricFamilies = []generator.FamilyGenerator{
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*generator.NewFamilyGeneratorWithStability(
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"kube_mutatingwebhookconfiguration_info",
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"Information about the MutatingWebhookConfiguration.",
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metric.Gauge,
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basemetrics.ALPHA,
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"",
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wrapMutatingWebhookConfigurationFunc(func(_ *admissionregistrationv1.MutatingWebhookConfiguration) *metric.Family {
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return &metric.Family{
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Metrics: []*metric.Metric{
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{
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Value: 1,
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},
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},
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}
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}),
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),
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*generator.NewFamilyGeneratorWithStability(
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"kube_mutatingwebhookconfiguration_created",
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"Unix creation timestamp.",
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metric.Gauge,
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basemetrics.ALPHA,
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"",
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wrapMutatingWebhookConfigurationFunc(func(mwc *admissionregistrationv1.MutatingWebhookConfiguration) *metric.Family {
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ms := []*metric.Metric{}
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if !mwc.CreationTimestamp.IsZero() {
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ms = append(ms, &metric.Metric{
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Value: float64(mwc.CreationTimestamp.Unix()),
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})
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}
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return &metric.Family{
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Metrics: ms,
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}
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}),
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),
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*generator.NewFamilyGeneratorWithStability(
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"kube_mutatingwebhookconfiguration_metadata_resource_version",
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"Resource version representing a specific version of the MutatingWebhookConfiguration.",
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metric.Gauge,
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basemetrics.ALPHA,
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"",
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wrapMutatingWebhookConfigurationFunc(func(mwc *admissionregistrationv1.MutatingWebhookConfiguration) *metric.Family {
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return &metric.Family{
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Metrics: resourceVersionMetric(mwc.ResourceVersion),
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}
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}),
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),
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*generator.NewFamilyGeneratorWithStability(
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"kube_mutatingwebhookconfiguration_webhook_clientconfig_service",
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"Service used by the apiserver to connect to a mutating webhook.",
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metric.Gauge,
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basemetrics.ALPHA,
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"",
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wrapMutatingWebhookConfigurationFunc(func(mwc *admissionregistrationv1.MutatingWebhookConfiguration) *metric.Family {
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ms := []*metric.Metric{}
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for _, webhook := range mwc.Webhooks {
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var serviceName, serviceNamespace string
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if webhook.ClientConfig.Service != nil {
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serviceName = webhook.ClientConfig.Service.Name
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serviceNamespace = webhook.ClientConfig.Service.Namespace
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}
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ms = append(ms, &metric.Metric{
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LabelKeys: []string{"webhook_name", "service_name", "service_namespace"},
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LabelValues: []string{webhook.Name, serviceName, serviceNamespace},
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Value: 1,
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})
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}
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return &metric.Family{
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Metrics: ms,
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}
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}),
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),
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}
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)
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func createMutatingWebhookConfigurationListWatch(kubeClient clientset.Interface, _ string, _ string) cache.ListerWatcher {
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return &cache.ListWatch{
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ListFunc: func(opts metav1.ListOptions) (runtime.Object, error) {
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return kubeClient.AdmissionregistrationV1().MutatingWebhookConfigurations().List(context.TODO(), opts)
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},
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WatchFunc: func(opts metav1.ListOptions) (watch.Interface, error) {
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return kubeClient.AdmissionregistrationV1().MutatingWebhookConfigurations().Watch(context.TODO(), opts)
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},
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}
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}
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func wrapMutatingWebhookConfigurationFunc(f func(*admissionregistrationv1.MutatingWebhookConfiguration) *metric.Family) func(interface{}) *metric.Family {
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return func(obj interface{}) *metric.Family {
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mutatingWebhookConfiguration := obj.(*admissionregistrationv1.MutatingWebhookConfiguration)
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metricFamily := f(mutatingWebhookConfiguration)
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for _, m := range metricFamily.Metrics {
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m.LabelKeys, m.LabelValues = mergeKeyValues(descMutatingWebhookConfigurationDefaultLabels, []string{mutatingWebhookConfiguration.Namespace, mutatingWebhookConfiguration.Name}, m.LabelKeys, m.LabelValues)
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}
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return metricFamily
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}
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}
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