574 lines
26 KiB
Go
574 lines
26 KiB
Go
/*
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Copyright 2018 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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"fmt"
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"reflect"
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"sort"
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"strconv"
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"strings"
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"github.com/prometheus/client_golang/prometheus"
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admissionregistrationv1 "k8s.io/api/admissionregistration/v1"
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appsv1 "k8s.io/api/apps/v1"
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autoscaling "k8s.io/api/autoscaling/v2"
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batchv1 "k8s.io/api/batch/v1"
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certv1 "k8s.io/api/certificates/v1"
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coordinationv1 "k8s.io/api/coordination/v1"
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v1 "k8s.io/api/core/v1"
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discoveryv1 "k8s.io/api/discovery/v1"
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networkingv1 "k8s.io/api/networking/v1"
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policyv1 "k8s.io/api/policy/v1"
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rbacv1 "k8s.io/api/rbac/v1"
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storagev1 "k8s.io/api/storage/v1"
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clientset "k8s.io/client-go/kubernetes"
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"k8s.io/client-go/tools/cache"
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"k8s.io/klog/v2"
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ksmtypes "k8s.io/kube-state-metrics/v2/pkg/builder/types"
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"k8s.io/kube-state-metrics/v2/pkg/customresource"
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generator "k8s.io/kube-state-metrics/v2/pkg/metric_generator"
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metricsstore "k8s.io/kube-state-metrics/v2/pkg/metrics_store"
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"k8s.io/kube-state-metrics/v2/pkg/options"
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"k8s.io/kube-state-metrics/v2/pkg/sharding"
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"k8s.io/kube-state-metrics/v2/pkg/watch"
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)
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// Make sure the internal Builder implements the public BuilderInterface.
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// New Builder methods should be added to the public BuilderInterface.
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var _ ksmtypes.BuilderInterface = &Builder{}
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// Builder helps to build store. It follows the builder pattern
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// (https://en.wikipedia.org/wiki/Builder_pattern).
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type Builder struct {
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kubeClient clientset.Interface
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customResourceClients map[string]interface{}
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namespaces options.NamespaceList
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// namespaceFilter is inside fieldSelectorFilter
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fieldSelectorFilter string
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ctx context.Context
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enabledResources []string
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familyGeneratorFilter generator.FamilyGeneratorFilter
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listWatchMetrics *watch.ListWatchMetrics
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shardingMetrics *sharding.Metrics
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shard int32
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totalShards int
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buildStoresFunc ksmtypes.BuildStoresFunc
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buildCustomResourceStoresFunc ksmtypes.BuildCustomResourceStoresFunc
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allowAnnotationsList map[string][]string
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allowLabelsList map[string][]string
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useAPIServerCache bool
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}
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// NewBuilder returns a new builder.
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func NewBuilder() *Builder {
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b := &Builder{}
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return b
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}
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// WithMetrics sets the metrics property of a Builder.
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func (b *Builder) WithMetrics(r prometheus.Registerer) {
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b.listWatchMetrics = watch.NewListWatchMetrics(r)
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b.shardingMetrics = sharding.NewShardingMetrics(r)
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}
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// WithEnabledResources sets the enabledResources property of a Builder.
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func (b *Builder) WithEnabledResources(r []string) error {
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for _, col := range r {
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if !resourceExists(col) {
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return fmt.Errorf("resource %s does not exist. Available resources: %s", col, strings.Join(availableResources(), ","))
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}
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}
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var copy []string
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copy = append(copy, r...)
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sort.Strings(copy)
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b.enabledResources = copy
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return nil
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}
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// WithFieldSelectorFilter sets the fieldSelector property of a Builder.
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func (b *Builder) WithFieldSelectorFilter(fieldSelectorFilter string) {
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b.fieldSelectorFilter = fieldSelectorFilter
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}
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// WithNamespaces sets the namespaces property of a Builder.
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func (b *Builder) WithNamespaces(n options.NamespaceList) {
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b.namespaces = n
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}
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// MergeFieldSelectors merges multiple fieldSelectors using AND operator.
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func (b *Builder) MergeFieldSelectors(selectors []string) (string, error) {
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return options.MergeFieldSelectors(selectors)
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}
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// WithSharding sets the shard and totalShards property of a Builder.
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func (b *Builder) WithSharding(shard int32, totalShards int) {
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b.shard = shard
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labels := map[string]string{sharding.LabelOrdinal: strconv.Itoa(int(shard))}
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b.shardingMetrics.Ordinal.Reset()
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b.shardingMetrics.Ordinal.With(labels).Set(float64(shard))
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b.totalShards = totalShards
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b.shardingMetrics.Total.Set(float64(totalShards))
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}
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// WithContext sets the ctx property of a Builder.
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func (b *Builder) WithContext(ctx context.Context) {
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b.ctx = ctx
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}
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// WithKubeClient sets the kubeClient property of a Builder.
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func (b *Builder) WithKubeClient(c clientset.Interface) {
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b.kubeClient = c
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}
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// WithCustomResourceClients sets the customResourceClients property of a Builder.
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func (b *Builder) WithCustomResourceClients(cs map[string]interface{}) {
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b.customResourceClients = cs
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}
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// WithUsingAPIServerCache configures whether using APIServer cache or not.
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func (b *Builder) WithUsingAPIServerCache(u bool) {
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b.useAPIServerCache = u
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}
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// WithFamilyGeneratorFilter configures the family generator filter which decides which
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// metrics are to be exposed by the store build by the Builder.
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func (b *Builder) WithFamilyGeneratorFilter(l generator.FamilyGeneratorFilter) {
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b.familyGeneratorFilter = l
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}
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// WithGenerateStoresFunc configures a custom generate store function
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func (b *Builder) WithGenerateStoresFunc(f ksmtypes.BuildStoresFunc) {
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b.buildStoresFunc = f
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}
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// WithGenerateCustomResourceStoresFunc configures a custom generate custom resource store function
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func (b *Builder) WithGenerateCustomResourceStoresFunc(f ksmtypes.BuildCustomResourceStoresFunc) {
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b.buildCustomResourceStoresFunc = f
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}
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// DefaultGenerateStoresFunc returns default buildStores function
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func (b *Builder) DefaultGenerateStoresFunc() ksmtypes.BuildStoresFunc {
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return b.buildStores
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}
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// DefaultGenerateCustomResourceStoresFunc returns default buildCustomResourceStores function
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func (b *Builder) DefaultGenerateCustomResourceStoresFunc() ksmtypes.BuildCustomResourceStoresFunc {
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return b.buildCustomResourceStores
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}
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// WithCustomResourceStoreFactories returns configures a custom resource stores factory
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func (b *Builder) WithCustomResourceStoreFactories(fs ...customresource.RegistryFactory) {
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for i := range fs {
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f := fs[i]
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if _, ok := availableStores[f.Name()]; ok {
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klog.InfoS("The internal resource store already exists and is overridden by a custom resource store with the same name, please make sure it meets your expectation", "registryName", f.Name())
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}
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availableStores[f.Name()] = func(b *Builder) []cache.Store {
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return b.buildCustomResourceStoresFunc(
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f.Name(),
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f.MetricFamilyGenerators(b.allowAnnotationsList[f.Name()], b.allowLabelsList[f.Name()]),
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f.ExpectedType(),
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f.ListWatch,
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b.useAPIServerCache,
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)
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}
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}
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}
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// WithAllowAnnotations configures which annotations can be returned for metrics
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func (b *Builder) WithAllowAnnotations(annotations map[string][]string) {
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if len(annotations) > 0 {
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b.allowAnnotationsList = annotations
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}
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}
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// WithAllowLabels configures which labels can be returned for metrics
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func (b *Builder) WithAllowLabels(labels map[string][]string) error {
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if len(labels) > 0 {
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for label := range labels {
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if !resourceExists(label) && label != "*" {
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return fmt.Errorf("resource %s does not exist. Available resources: %s", label, strings.Join(availableResources(), ","))
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}
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}
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b.allowLabelsList = labels
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// "*" takes precedence over other specifications
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if allowedLabels, ok := labels["*"]; ok {
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m := make(map[string][]string)
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for _, resource := range b.enabledResources {
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m[resource] = allowedLabels
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}
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b.allowLabelsList = m
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}
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}
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return nil
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}
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// Build initializes and registers all enabled stores.
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// It returns metrics writers which can be used to write out
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// metrics from the stores.
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func (b *Builder) Build() metricsstore.MetricsWriterList {
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if b.familyGeneratorFilter == nil {
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panic("familyGeneratorFilter should not be nil")
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}
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var metricsWriters metricsstore.MetricsWriterList
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var activeStoreNames []string
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for _, c := range b.enabledResources {
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constructor, ok := availableStores[c]
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if ok {
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stores := cacheStoresToMetricStores(constructor(b))
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activeStoreNames = append(activeStoreNames, c)
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metricsWriters = append(metricsWriters, metricsstore.NewMetricsWriter(stores...))
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}
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}
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klog.InfoS("Active resources", "activeStoreNames", strings.Join(activeStoreNames, ","))
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return metricsWriters
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}
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// BuildStores initializes and registers all enabled stores.
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// It returns metric stores which can be used to consume
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// the generated metrics from the stores.
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func (b *Builder) BuildStores() [][]cache.Store {
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if b.familyGeneratorFilter == nil {
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panic("familyGeneratorFilter should not be nil")
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}
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var allStores [][]cache.Store
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var activeStoreNames []string
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for _, c := range b.enabledResources {
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constructor, ok := availableStores[c]
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if ok {
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stores := constructor(b)
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activeStoreNames = append(activeStoreNames, c)
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allStores = append(allStores, stores)
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}
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}
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klog.InfoS("Active resources", "activeStoreNames", strings.Join(activeStoreNames, ","))
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return allStores
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}
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var availableStores = map[string]func(f *Builder) []cache.Store{
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"certificatesigningrequests": func(b *Builder) []cache.Store { return b.buildCsrStores() },
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"clusterroles": func(b *Builder) []cache.Store { return b.buildClusterRoleStores() },
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"configmaps": func(b *Builder) []cache.Store { return b.buildConfigMapStores() },
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"clusterrolebindings": func(b *Builder) []cache.Store { return b.buildClusterRoleBindingStores() },
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"cronjobs": func(b *Builder) []cache.Store { return b.buildCronJobStores() },
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"daemonsets": func(b *Builder) []cache.Store { return b.buildDaemonSetStores() },
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"deployments": func(b *Builder) []cache.Store { return b.buildDeploymentStores() },
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"endpoints": func(b *Builder) []cache.Store { return b.buildEndpointsStores() },
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"endpointslices": func(b *Builder) []cache.Store { return b.buildEndpointSlicesStores() },
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"horizontalpodautoscalers": func(b *Builder) []cache.Store { return b.buildHPAStores() },
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"ingresses": func(b *Builder) []cache.Store { return b.buildIngressStores() },
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"ingressclasses": func(b *Builder) []cache.Store { return b.buildIngressClassStores() },
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"jobs": func(b *Builder) []cache.Store { return b.buildJobStores() },
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"leases": func(b *Builder) []cache.Store { return b.buildLeasesStores() },
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"limitranges": func(b *Builder) []cache.Store { return b.buildLimitRangeStores() },
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"mutatingwebhookconfigurations": func(b *Builder) []cache.Store { return b.buildMutatingWebhookConfigurationStores() },
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"namespaces": func(b *Builder) []cache.Store { return b.buildNamespaceStores() },
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"networkpolicies": func(b *Builder) []cache.Store { return b.buildNetworkPolicyStores() },
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"nodes": func(b *Builder) []cache.Store { return b.buildNodeStores() },
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"persistentvolumeclaims": func(b *Builder) []cache.Store { return b.buildPersistentVolumeClaimStores() },
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"persistentvolumes": func(b *Builder) []cache.Store { return b.buildPersistentVolumeStores() },
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"poddisruptionbudgets": func(b *Builder) []cache.Store { return b.buildPodDisruptionBudgetStores() },
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"pods": func(b *Builder) []cache.Store { return b.buildPodStores() },
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"replicasets": func(b *Builder) []cache.Store { return b.buildReplicaSetStores() },
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"replicationcontrollers": func(b *Builder) []cache.Store { return b.buildReplicationControllerStores() },
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"resourcequotas": func(b *Builder) []cache.Store { return b.buildResourceQuotaStores() },
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"roles": func(b *Builder) []cache.Store { return b.buildRoleStores() },
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"rolebindings": func(b *Builder) []cache.Store { return b.buildRoleBindingStores() },
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"secrets": func(b *Builder) []cache.Store { return b.buildSecretStores() },
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"serviceaccounts": func(b *Builder) []cache.Store { return b.buildServiceAccountStores() },
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"services": func(b *Builder) []cache.Store { return b.buildServiceStores() },
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"statefulsets": func(b *Builder) []cache.Store { return b.buildStatefulSetStores() },
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"storageclasses": func(b *Builder) []cache.Store { return b.buildStorageClassStores() },
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"validatingwebhookconfigurations": func(b *Builder) []cache.Store { return b.buildValidatingWebhookConfigurationStores() },
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"volumeattachments": func(b *Builder) []cache.Store { return b.buildVolumeAttachmentStores() },
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}
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func resourceExists(name string) bool {
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_, ok := availableStores[name]
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return ok
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}
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func availableResources() []string {
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c := []string{}
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for name := range availableStores {
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c = append(c, name)
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}
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return c
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}
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func (b *Builder) buildConfigMapStores() []cache.Store {
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return b.buildStoresFunc(configMapMetricFamilies(b.allowAnnotationsList["configmaps"], b.allowLabelsList["configmaps"]), &v1.ConfigMap{}, createConfigMapListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildCronJobStores() []cache.Store {
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return b.buildStoresFunc(cronJobMetricFamilies(b.allowAnnotationsList["cronjobs"], b.allowLabelsList["cronjobs"]), &batchv1.CronJob{}, createCronJobListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildDaemonSetStores() []cache.Store {
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return b.buildStoresFunc(daemonSetMetricFamilies(b.allowAnnotationsList["daemonsets"], b.allowLabelsList["daemonsets"]), &appsv1.DaemonSet{}, createDaemonSetListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildDeploymentStores() []cache.Store {
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return b.buildStoresFunc(deploymentMetricFamilies(b.allowAnnotationsList["deployments"], b.allowLabelsList["deployments"]), &appsv1.Deployment{}, createDeploymentListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildEndpointsStores() []cache.Store {
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return b.buildStoresFunc(endpointMetricFamilies(b.allowAnnotationsList["endpoints"], b.allowLabelsList["endpoints"]), &v1.Endpoints{}, createEndpointsListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildEndpointSlicesStores() []cache.Store {
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return b.buildStoresFunc(endpointSliceMetricFamilies(b.allowAnnotationsList["endpointslices"], b.allowLabelsList["endpointslices"]), &discoveryv1.EndpointSlice{}, createEndpointSliceListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildHPAStores() []cache.Store {
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return b.buildStoresFunc(hpaMetricFamilies(b.allowAnnotationsList["horizontalpodautoscalers"], b.allowLabelsList["horizontalpodautoscalers"]), &autoscaling.HorizontalPodAutoscaler{}, createHPAListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildIngressStores() []cache.Store {
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return b.buildStoresFunc(ingressMetricFamilies(b.allowAnnotationsList["ingresses"], b.allowLabelsList["ingresses"]), &networkingv1.Ingress{}, createIngressListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildJobStores() []cache.Store {
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return b.buildStoresFunc(jobMetricFamilies(b.allowAnnotationsList["jobs"], b.allowLabelsList["jobs"]), &batchv1.Job{}, createJobListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildLimitRangeStores() []cache.Store {
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return b.buildStoresFunc(limitRangeMetricFamilies, &v1.LimitRange{}, createLimitRangeListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildMutatingWebhookConfigurationStores() []cache.Store {
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return b.buildStoresFunc(mutatingWebhookConfigurationMetricFamilies, &admissionregistrationv1.MutatingWebhookConfiguration{}, createMutatingWebhookConfigurationListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildNamespaceStores() []cache.Store {
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return b.buildStoresFunc(namespaceMetricFamilies(b.allowAnnotationsList["namespaces"], b.allowLabelsList["namespaces"]), &v1.Namespace{}, createNamespaceListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildNetworkPolicyStores() []cache.Store {
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return b.buildStoresFunc(networkPolicyMetricFamilies(b.allowAnnotationsList["networkpolicies"], b.allowLabelsList["networkpolicies"]), &networkingv1.NetworkPolicy{}, createNetworkPolicyListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildNodeStores() []cache.Store {
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return b.buildStoresFunc(nodeMetricFamilies(b.allowAnnotationsList["nodes"], b.allowLabelsList["nodes"]), &v1.Node{}, createNodeListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildPersistentVolumeClaimStores() []cache.Store {
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return b.buildStoresFunc(persistentVolumeClaimMetricFamilies(b.allowAnnotationsList["persistentvolumeclaims"], b.allowLabelsList["persistentvolumeclaims"]), &v1.PersistentVolumeClaim{}, createPersistentVolumeClaimListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildPersistentVolumeStores() []cache.Store {
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return b.buildStoresFunc(persistentVolumeMetricFamilies(b.allowAnnotationsList["persistentvolumes"], b.allowLabelsList["persistentvolumes"]), &v1.PersistentVolume{}, createPersistentVolumeListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildPodDisruptionBudgetStores() []cache.Store {
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return b.buildStoresFunc(podDisruptionBudgetMetricFamilies(b.allowAnnotationsList["poddisruptionbudgets"], b.allowLabelsList["poddisruptionbudgets"]), &policyv1.PodDisruptionBudget{}, createPodDisruptionBudgetListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildReplicaSetStores() []cache.Store {
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return b.buildStoresFunc(replicaSetMetricFamilies(b.allowAnnotationsList["replicasets"], b.allowLabelsList["replicasets"]), &appsv1.ReplicaSet{}, createReplicaSetListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildReplicationControllerStores() []cache.Store {
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return b.buildStoresFunc(replicationControllerMetricFamilies, &v1.ReplicationController{}, createReplicationControllerListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildResourceQuotaStores() []cache.Store {
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return b.buildStoresFunc(resourceQuotaMetricFamilies, &v1.ResourceQuota{}, createResourceQuotaListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildSecretStores() []cache.Store {
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return b.buildStoresFunc(secretMetricFamilies(b.allowAnnotationsList["secrets"], b.allowLabelsList["secrets"]), &v1.Secret{}, createSecretListWatch, b.useAPIServerCache)
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}
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func (b *Builder) buildServiceAccountStores() []cache.Store {
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return b.buildStoresFunc(serviceAccountMetricFamilies(b.allowAnnotationsList["serviceaccounts"], b.allowLabelsList["serviceaccounts"]), &v1.ServiceAccount{}, createServiceAccountListWatch, b.useAPIServerCache)
|
|
}
|
|
|
|
func (b *Builder) buildServiceStores() []cache.Store {
|
|
return b.buildStoresFunc(serviceMetricFamilies(b.allowAnnotationsList["services"], b.allowLabelsList["services"]), &v1.Service{}, createServiceListWatch, b.useAPIServerCache)
|
|
}
|
|
|
|
func (b *Builder) buildStatefulSetStores() []cache.Store {
|
|
return b.buildStoresFunc(statefulSetMetricFamilies(b.allowAnnotationsList["statefulsets"], b.allowLabelsList["statefulsets"]), &appsv1.StatefulSet{}, createStatefulSetListWatch, b.useAPIServerCache)
|
|
}
|
|
|
|
func (b *Builder) buildStorageClassStores() []cache.Store {
|
|
return b.buildStoresFunc(storageClassMetricFamilies(b.allowAnnotationsList["storageclasses"], b.allowLabelsList["storageclasses"]), &storagev1.StorageClass{}, createStorageClassListWatch, b.useAPIServerCache)
|
|
}
|
|
|
|
func (b *Builder) buildPodStores() []cache.Store {
|
|
return b.buildStoresFunc(podMetricFamilies(b.allowAnnotationsList["pods"], b.allowLabelsList["pods"]), &v1.Pod{}, createPodListWatch, b.useAPIServerCache)
|
|
}
|
|
|
|
func (b *Builder) buildCsrStores() []cache.Store {
|
|
return b.buildStoresFunc(csrMetricFamilies(b.allowAnnotationsList["certificatesigningrequests"], b.allowLabelsList["certificatesigningrequests"]), &certv1.CertificateSigningRequest{}, createCSRListWatch, b.useAPIServerCache)
|
|
}
|
|
|
|
func (b *Builder) buildValidatingWebhookConfigurationStores() []cache.Store {
|
|
return b.buildStoresFunc(validatingWebhookConfigurationMetricFamilies, &admissionregistrationv1.ValidatingWebhookConfiguration{}, createValidatingWebhookConfigurationListWatch, b.useAPIServerCache)
|
|
}
|
|
|
|
func (b *Builder) buildVolumeAttachmentStores() []cache.Store {
|
|
return b.buildStoresFunc(volumeAttachmentMetricFamilies, &storagev1.VolumeAttachment{}, createVolumeAttachmentListWatch, b.useAPIServerCache)
|
|
}
|
|
|
|
func (b *Builder) buildLeasesStores() []cache.Store {
|
|
return b.buildStoresFunc(leaseMetricFamilies, &coordinationv1.Lease{}, createLeaseListWatch, b.useAPIServerCache)
|
|
}
|
|
|
|
func (b *Builder) buildClusterRoleStores() []cache.Store {
|
|
return b.buildStoresFunc(clusterRoleMetricFamilies(b.allowAnnotationsList["clusterroles"], b.allowLabelsList["clusterroles"]), &rbacv1.ClusterRole{}, createClusterRoleListWatch, b.useAPIServerCache)
|
|
}
|
|
|
|
func (b *Builder) buildRoleStores() []cache.Store {
|
|
return b.buildStoresFunc(roleMetricFamilies(b.allowAnnotationsList["roles"], b.allowLabelsList["roles"]), &rbacv1.Role{}, createRoleListWatch, b.useAPIServerCache)
|
|
}
|
|
|
|
func (b *Builder) buildClusterRoleBindingStores() []cache.Store {
|
|
return b.buildStoresFunc(clusterRoleBindingMetricFamilies(b.allowAnnotationsList["clusterrolebindings"], b.allowLabelsList["clusterrolebindings"]), &rbacv1.ClusterRoleBinding{}, createClusterRoleBindingListWatch, b.useAPIServerCache)
|
|
}
|
|
|
|
func (b *Builder) buildRoleBindingStores() []cache.Store {
|
|
return b.buildStoresFunc(roleBindingMetricFamilies(b.allowAnnotationsList["rolebindings"], b.allowLabelsList["rolebindings"]), &rbacv1.RoleBinding{}, createRoleBindingListWatch, b.useAPIServerCache)
|
|
}
|
|
|
|
func (b *Builder) buildIngressClassStores() []cache.Store {
|
|
return b.buildStoresFunc(ingressClassMetricFamilies(b.allowAnnotationsList["ingressclasses"], b.allowLabelsList["ingressclasses"]), &networkingv1.IngressClass{}, createIngressClassListWatch, b.useAPIServerCache)
|
|
}
|
|
|
|
func (b *Builder) buildStores(
|
|
metricFamilies []generator.FamilyGenerator,
|
|
expectedType interface{},
|
|
listWatchFunc func(kubeClient clientset.Interface, ns string, fieldSelector string) cache.ListerWatcher,
|
|
useAPIServerCache bool,
|
|
) []cache.Store {
|
|
metricFamilies = generator.FilterFamilyGenerators(b.familyGeneratorFilter, metricFamilies)
|
|
composedMetricGenFuncs := generator.ComposeMetricGenFuncs(metricFamilies)
|
|
familyHeaders := generator.ExtractMetricFamilyHeaders(metricFamilies)
|
|
|
|
if b.namespaces.IsAllNamespaces() {
|
|
store := metricsstore.NewMetricsStore(
|
|
familyHeaders,
|
|
composedMetricGenFuncs,
|
|
)
|
|
if b.fieldSelectorFilter != "" {
|
|
klog.InfoS("FieldSelector is used", "fieldSelector", b.fieldSelectorFilter)
|
|
}
|
|
listWatcher := listWatchFunc(b.kubeClient, v1.NamespaceAll, b.fieldSelectorFilter)
|
|
b.startReflector(expectedType, store, listWatcher, useAPIServerCache)
|
|
return []cache.Store{store}
|
|
}
|
|
|
|
stores := make([]cache.Store, 0, len(b.namespaces))
|
|
for _, ns := range b.namespaces {
|
|
store := metricsstore.NewMetricsStore(
|
|
familyHeaders,
|
|
composedMetricGenFuncs,
|
|
)
|
|
if b.fieldSelectorFilter != "" {
|
|
klog.InfoS("FieldSelector is used", "fieldSelector", b.fieldSelectorFilter)
|
|
}
|
|
listWatcher := listWatchFunc(b.kubeClient, ns, b.fieldSelectorFilter)
|
|
b.startReflector(expectedType, store, listWatcher, useAPIServerCache)
|
|
stores = append(stores, store)
|
|
}
|
|
|
|
return stores
|
|
}
|
|
|
|
// TODO(Garrybest): Merge `buildStores` and `buildCustomResourceStores`
|
|
func (b *Builder) buildCustomResourceStores(resourceName string,
|
|
metricFamilies []generator.FamilyGenerator,
|
|
expectedType interface{},
|
|
listWatchFunc func(customResourceClient interface{}, ns string, fieldSelector string) cache.ListerWatcher,
|
|
useAPIServerCache bool,
|
|
) []cache.Store {
|
|
metricFamilies = generator.FilterFamilyGenerators(b.familyGeneratorFilter, metricFamilies)
|
|
composedMetricGenFuncs := generator.ComposeMetricGenFuncs(metricFamilies)
|
|
familyHeaders := generator.ExtractMetricFamilyHeaders(metricFamilies)
|
|
|
|
customResourceClient, ok := b.customResourceClients[resourceName]
|
|
if !ok {
|
|
klog.InfoS("Custom resource client does not exist", "resourceName", resourceName)
|
|
return []cache.Store{}
|
|
}
|
|
|
|
if b.namespaces.IsAllNamespaces() {
|
|
store := metricsstore.NewMetricsStore(
|
|
familyHeaders,
|
|
composedMetricGenFuncs,
|
|
)
|
|
if b.fieldSelectorFilter != "" {
|
|
klog.InfoS("FieldSelector is used", "fieldSelector", b.fieldSelectorFilter)
|
|
}
|
|
listWatcher := listWatchFunc(customResourceClient, v1.NamespaceAll, b.fieldSelectorFilter)
|
|
b.startReflector(expectedType, store, listWatcher, useAPIServerCache)
|
|
return []cache.Store{store}
|
|
}
|
|
|
|
stores := make([]cache.Store, 0, len(b.namespaces))
|
|
for _, ns := range b.namespaces {
|
|
store := metricsstore.NewMetricsStore(
|
|
familyHeaders,
|
|
composedMetricGenFuncs,
|
|
)
|
|
klog.InfoS("FieldSelector is used", "fieldSelector", b.fieldSelectorFilter)
|
|
listWatcher := listWatchFunc(customResourceClient, ns, b.fieldSelectorFilter)
|
|
b.startReflector(expectedType, store, listWatcher, useAPIServerCache)
|
|
stores = append(stores, store)
|
|
}
|
|
|
|
return stores
|
|
}
|
|
|
|
// startReflector starts a Kubernetes client-go reflector with the given
|
|
// listWatcher and registers it with the given store.
|
|
func (b *Builder) startReflector(
|
|
expectedType interface{},
|
|
store cache.Store,
|
|
listWatcher cache.ListerWatcher,
|
|
useAPIServerCache bool,
|
|
) {
|
|
instrumentedListWatch := watch.NewInstrumentedListerWatcher(listWatcher, b.listWatchMetrics, reflect.TypeOf(expectedType).String(), useAPIServerCache)
|
|
reflector := cache.NewReflector(sharding.NewShardedListWatch(b.shard, b.totalShards, instrumentedListWatch), expectedType, store, 0)
|
|
go reflector.Run(b.ctx.Done())
|
|
}
|
|
|
|
// cacheStoresToMetricStores converts []cache.Store into []*metricsstore.MetricsStore
|
|
func cacheStoresToMetricStores(cStores []cache.Store) []*metricsstore.MetricsStore {
|
|
mStores := make([]*metricsstore.MetricsStore, 0, len(cStores))
|
|
for _, store := range cStores {
|
|
mStores = append(mStores, store.(*metricsstore.MetricsStore))
|
|
}
|
|
|
|
return mStores
|
|
}
|