mirror of
https://github.com/Telecominfraproject/wlan-cloud-kube-state-metrics.git
synced 2025-10-30 02:02:25 +00:00
124 lines
3.0 KiB
Go
124 lines
3.0 KiB
Go
/*
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Copyright 2021 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 builder_test
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import (
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"reflect"
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"testing"
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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/kube-state-metrics/v2/pkg/builder"
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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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fakeMetricLists = [][]string{
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{"metric0.1", "metric0.2"},
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{"metric1.1", "metric1.2"},
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}
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)
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// BuilderInterface and Builder are public, and designed to allow
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// injecting custom stores notably when ksm is used as a library.
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// This test case ensures we don't break compatibility for external consumers.
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func TestBuilderWithCustomStore(t *testing.T) {
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b := builder.NewBuilder()
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b.WithFamilyGeneratorFilter(generator.NewCompositeFamilyGeneratorFilter())
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b.WithEnabledResources([]string{"pods"})
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b.WithGenerateStoresFunc(customStore)
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var fStores []*fakeStore
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for _, stores := range b.BuildStores() {
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for _, store := range stores {
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fStores = append(fStores, store.(*fakeStore))
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}
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}
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for i, fStore := range fStores {
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metrics := fStore.List()
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for j, m := range metrics {
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if !reflect.DeepEqual(m, fakeMetricLists[i][j]) {
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t.Fatalf("Unexpected store values: want %v found %v", fakeMetricLists[i], metrics)
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}
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}
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}
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}
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func customStore(metricFamilies []generator.FamilyGenerator,
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expectedType interface{},
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listWatchFunc func(kubeClient clientset.Interface, ns string, fieldSelector string) cache.ListerWatcher,
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useAPIServerCache bool,
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) []cache.Store {
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stores := make([]cache.Store, 0, 2)
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stores = append(stores, newFakeStore(fakeMetricLists[0]))
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stores = append(stores, newFakeStore(fakeMetricLists[1]))
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return stores
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}
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func newFakeStore(metrics []string) *fakeStore {
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return &fakeStore{
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metrics: metrics,
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}
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}
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type fakeStore struct {
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metrics []string
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}
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func (s *fakeStore) Add(obj interface{}) error {
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return nil
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}
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func (s *fakeStore) Update(obj interface{}) error {
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return nil
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}
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func (s *fakeStore) Delete(obj interface{}) error {
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return nil
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}
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func (s *fakeStore) List() []interface{} {
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metrics := make([]interface{}, len(s.metrics))
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for i, m := range s.metrics {
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metrics[i] = m
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}
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return metrics
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}
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func (s *fakeStore) ListKeys() []string {
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return nil
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}
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func (s *fakeStore) Get(obj interface{}) (item interface{}, exists bool, err error) {
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return nil, false, nil
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}
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func (s *fakeStore) GetByKey(key string) (item interface{}, exists bool, err error) {
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return nil, false, nil
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}
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func (s *fakeStore) Replace(list []interface{}, _ string) error {
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return nil
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}
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func (s *fakeStore) Resync() error {
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return nil
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}
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