/*
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Copyright 2016 The Kubernetes Authors.
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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 disk
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"testing"
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"time"
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openapi_v2 "github.com/googleapis/gnostic/openapiv2"
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"github.com/stretchr/testify/assert"
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"k8s.io/apimachinery/pkg/api/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/version"
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"k8s.io/client-go/discovery"
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restclient "k8s.io/client-go/rest"
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"k8s.io/client-go/rest/fake"
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)
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func TestCachedDiscoveryClient_Fresh(t *testing.T) {
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assert := assert.New(t)
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d, err := ioutil.TempDir("", "")
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assert.NoError(err)
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defer os.RemoveAll(d)
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c := fakeDiscoveryClient{}
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cdc := newCachedDiscoveryClient(&c, d, 60*time.Second)
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assert.True(cdc.Fresh(), "should be fresh after creation")
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cdc.ServerGroups()
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assert.True(cdc.Fresh(), "should be fresh after groups call without cache")
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assert.Equal(c.groupCalls, 1)
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cdc.ServerGroups()
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assert.True(cdc.Fresh(), "should be fresh after another groups call")
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assert.Equal(c.groupCalls, 1)
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cdc.ServerResources()
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assert.True(cdc.Fresh(), "should be fresh after resources call")
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assert.Equal(c.resourceCalls, 1)
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cdc.ServerResources()
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assert.True(cdc.Fresh(), "should be fresh after another resources call")
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assert.Equal(c.resourceCalls, 1)
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cdc = newCachedDiscoveryClient(&c, d, 60*time.Second)
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cdc.ServerGroups()
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assert.False(cdc.Fresh(), "should NOT be fresh after recreation with existing groups cache")
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assert.Equal(c.groupCalls, 1)
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cdc.ServerResources()
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assert.False(cdc.Fresh(), "should NOT be fresh after recreation with existing resources cache")
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assert.Equal(c.resourceCalls, 1)
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cdc.Invalidate()
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assert.True(cdc.Fresh(), "should be fresh after cache invalidation")
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cdc.ServerResources()
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assert.True(cdc.Fresh(), "should ignore existing resources cache after invalidation")
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assert.Equal(c.resourceCalls, 2)
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}
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func TestNewCachedDiscoveryClient_TTL(t *testing.T) {
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assert := assert.New(t)
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d, err := ioutil.TempDir("", "")
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assert.NoError(err)
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defer os.RemoveAll(d)
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c := fakeDiscoveryClient{}
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cdc := newCachedDiscoveryClient(&c, d, 1*time.Nanosecond)
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cdc.ServerGroups()
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assert.Equal(c.groupCalls, 1)
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time.Sleep(1 * time.Second)
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cdc.ServerGroups()
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assert.Equal(c.groupCalls, 2)
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}
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func TestNewCachedDiscoveryClient_PathPerm(t *testing.T) {
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assert := assert.New(t)
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d, err := ioutil.TempDir("", "")
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assert.NoError(err)
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os.RemoveAll(d)
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defer os.RemoveAll(d)
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c := fakeDiscoveryClient{}
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cdc := newCachedDiscoveryClient(&c, d, 1*time.Nanosecond)
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cdc.ServerGroups()
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err = filepath.Walk(d, func(path string, info os.FileInfo, err error) error {
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if err != nil {
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return err
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}
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if info.IsDir() {
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assert.Equal(os.FileMode(0750), info.Mode().Perm())
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} else {
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assert.Equal(os.FileMode(0660), info.Mode().Perm())
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}
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return nil
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})
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assert.NoError(err)
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}
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type fakeDiscoveryClient struct {
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groupCalls int
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resourceCalls int
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versionCalls int
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openAPICalls int
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serverResourcesHandler func() ([]*metav1.APIResourceList, error)
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}
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var _ discovery.DiscoveryInterface = &fakeDiscoveryClient{}
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func (c *fakeDiscoveryClient) RESTClient() restclient.Interface {
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return &fake.RESTClient{}
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}
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func (c *fakeDiscoveryClient) ServerGroups() (*metav1.APIGroupList, error) {
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c.groupCalls = c.groupCalls + 1
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return c.serverGroups()
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}
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func (c *fakeDiscoveryClient) serverGroups() (*metav1.APIGroupList, error) {
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return &metav1.APIGroupList{
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Groups: []metav1.APIGroup{
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{
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Name: "a",
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Versions: []metav1.GroupVersionForDiscovery{
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{
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GroupVersion: "a/v1",
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Version: "v1",
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},
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},
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PreferredVersion: metav1.GroupVersionForDiscovery{
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GroupVersion: "a/v1",
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Version: "v1",
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},
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},
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},
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}, nil
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}
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func (c *fakeDiscoveryClient) ServerResourcesForGroupVersion(groupVersion string) (*metav1.APIResourceList, error) {
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c.resourceCalls = c.resourceCalls + 1
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if groupVersion == "a/v1" {
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return &metav1.APIResourceList{APIResources: []metav1.APIResource{{Name: "widgets", Kind: "Widget"}}}, nil
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}
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return nil, errors.NewNotFound(schema.GroupResource{}, "")
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}
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// Deprecated: use ServerGroupsAndResources instead.
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func (c *fakeDiscoveryClient) ServerResources() ([]*metav1.APIResourceList, error) {
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_, rs, err := c.ServerGroupsAndResources()
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return rs, err
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}
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func (c *fakeDiscoveryClient) ServerGroupsAndResources() ([]*metav1.APIGroup, []*metav1.APIResourceList, error) {
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c.resourceCalls = c.resourceCalls + 1
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gs, _ := c.serverGroups()
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resultGroups := []*metav1.APIGroup{}
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for i := range gs.Groups {
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resultGroups = append(resultGroups, &gs.Groups[i])
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}
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if c.serverResourcesHandler != nil {
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rs, err := c.serverResourcesHandler()
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return resultGroups, rs, err
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}
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return resultGroups, []*metav1.APIResourceList{}, nil
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}
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func (c *fakeDiscoveryClient) ServerPreferredResources() ([]*metav1.APIResourceList, error) {
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c.resourceCalls = c.resourceCalls + 1
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return nil, nil
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}
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func (c *fakeDiscoveryClient) ServerPreferredNamespacedResources() ([]*metav1.APIResourceList, error) {
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c.resourceCalls = c.resourceCalls + 1
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return nil, nil
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}
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func (c *fakeDiscoveryClient) ServerVersion() (*version.Info, error) {
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c.versionCalls = c.versionCalls + 1
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return &version.Info{}, nil
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}
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func (c *fakeDiscoveryClient) OpenAPISchema() (*openapi_v2.Document, error) {
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c.openAPICalls = c.openAPICalls + 1
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return &openapi_v2.Document{}, nil
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}
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