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Merge pull request #62876 from deads2k/cli-33-discovery 

Automatic merge from submit-queue (batch tested with PRs 62876, 62733, 62827). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

remove discovery injection from factory

We added this shim when cached discovery was a contentious thing to give ourselves flexibility.  It is no longer contentious and this removes a layer of complexity we no longer need.

@kubernetes/sig-cli-maintainers 
@soltysh @juanvallejo 

```release-note
NONE
```
pull/8/head
Kubernetes Submit Queue 2018-04-20 13:39:07 -07:00 committed by GitHub
parent 9c60fd5242 4f90f9aa8b
commit 03160fde5a
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 33 additions and 94 deletions
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3
pkg/kubectl/cmd/util/BUILD
View File

@ -113,13 +113,10 @@ go_test(
"//vendor/k8s.io/apimachinery/pkg/util/validation/field:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/version:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/watch:go_default_library",
"//vendor/k8s.io/apiserver/pkg/util/flag:go_default_library",
"//vendor/k8s.io/client-go/discovery:go_default_library",
"//vendor/k8s.io/client-go/rest:go_default_library",
"//vendor/k8s.io/client-go/rest/fake:go_default_library",
"//vendor/k8s.io/client-go/testing:go_default_library",
"//vendor/k8s.io/client-go/tools/clientcmd:go_default_library",
"//vendor/k8s.io/client-go/tools/clientcmd/api:go_default_library",
"//vendor/k8s.io/utils/exec:go_default_library",
],
)

2
pkg/kubectl/cmd/util/factory.go
View File

@ -118,8 +118,6 @@ type ClientAccessFactory interface {
// LabelsForObject returns the labels associated with the provided object
LabelsForObject(object runtime.Object) (map[string]string, error)
// Returns internal flagset
FlagSet() *pflag.FlagSet
// Command will stringify and return all environment arguments ie. a command run by a client
// using the factory.
Command(cmd *cobra.Command, showSecrets bool) string

82
pkg/kubectl/cmd/util/factory_client_access.go
View File

@ -70,7 +70,7 @@ import (
type ring0Factory struct {
flags *pflag.FlagSet
clientConfig clientcmd.ClientConfig
discoveryFactory DiscoveryClientFactory
discoveryCacheDir string
requireMatchedServerVersion bool
checkServerVersion sync.Once
@ -85,62 +85,16 @@ func NewClientAccessFactory(optionalClientConfig clientcmd.ClientConfig) ClientA
clientConfig = DefaultClientConfig(flags)
}
return NewClientAccessFactoryFromDiscovery(flags, clientConfig, &discoveryFactory{clientConfig: clientConfig})
}
// NewClientAccessFactoryFromDiscovery allows an external caller to substitute a different discoveryFactory
// Which allows for the client cache to be built in ring0, but still rely on a custom discovery client
func NewClientAccessFactoryFromDiscovery(flags *pflag.FlagSet, clientConfig clientcmd.ClientConfig, discoveryFactory DiscoveryClientFactory) ClientAccessFactory {
flags.SetNormalizeFunc(utilflag.WarnWordSepNormalizeFunc) // Warn for "_" flags
f := &ring0Factory{
flags: flags,
clientConfig: clientConfig,
discoveryFactory: discoveryFactory,
}
return f
}
type discoveryFactory struct {
clientConfig clientcmd.ClientConfig
cacheDir string
}
func (f *discoveryFactory) DiscoveryClient() (discovery.CachedDiscoveryInterface, error) {
cfg, err := f.clientConfig.ClientConfig()
if err != nil {
return nil, err
}
// The more groups you have, the more discovery requests you need to make.
// given 25 groups (our groups + a few custom resources) with one-ish version each, discovery needs to make 50 requests
// double it just so we don't end up here again for a while. This config is only used for discovery.
cfg.Burst = 100
if f.cacheDir != "" {
wt := cfg.WrapTransport
cfg.WrapTransport = func(rt http.RoundTripper) http.RoundTripper {
if wt != nil {
rt = wt(rt)
}
return transport.NewCacheRoundTripper(f.cacheDir, rt)
}
}
discoveryClient, err := discovery.NewDiscoveryClientForConfig(cfg)
if err != nil {
return nil, err
}
cacheDir := computeDiscoverCacheDir(filepath.Join(homedir.HomeDir(), ".kube", "cache", "discovery"), cfg.Host)
return NewCachedDiscoveryClient(discoveryClient, cacheDir, time.Duration(10*time.Minute)), nil
}
func (f *discoveryFactory) BindFlags(flags *pflag.FlagSet) {
defaultCacheDir := filepath.Join(homedir.HomeDir(), ".kube", "http-cache")
flags.StringVar(&f.cacheDir, FlagHTTPCacheDir, defaultCacheDir, "Default HTTP cache directory")
}
// DefaultClientConfig creates a clientcmd.ClientConfig with the following hierarchy:
// 1. Use the kubeconfig builder. The number of merges and overrides here gets a little crazy. Stay with me.
// 1. Merge the kubeconfig itself. This is done with the following hierarchy rules:
@ -201,7 +155,32 @@ func DefaultClientConfig(flags *pflag.FlagSet) clientcmd.ClientConfig {
}
func (f *ring0Factory) DiscoveryClient() (discovery.CachedDiscoveryInterface, error) {
return f.discoveryFactory.DiscoveryClient()
cfg, err := f.clientConfig.ClientConfig()
if err != nil {
return nil, err
}
// The more groups you have, the more discovery requests you need to make.
// given 25 groups (our groups + a few custom resources) with one-ish version each, discovery needs to make 50 requests
// double it just so we don't end up here again for a while. This config is only used for discovery.
cfg.Burst = 100
if f.discoveryCacheDir != "" {
wt := cfg.WrapTransport
cfg.WrapTransport = func(rt http.RoundTripper) http.RoundTripper {
if wt != nil {
rt = wt(rt)
}
return transport.NewCacheRoundTripper(f.discoveryCacheDir, rt)
}
}
discoveryClient, err := discovery.NewDiscoveryClientForConfig(cfg)
if err != nil {
return nil, err
}
cacheDir := computeDiscoverCacheDir(filepath.Join(homedir.HomeDir(), ".kube", "cache", "discovery"), cfg.Host)
return NewCachedDiscoveryClient(discoveryClient, cacheDir, time.Duration(10*time.Minute)), nil
}
func (f *ring0Factory) KubernetesClientSet() (*kubernetes.Clientset, error) {
@ -387,10 +366,6 @@ func (f *ring0Factory) LabelsForObject(object runtime.Object) (map[string]string
return meta.NewAccessor().Labels(object)
}
func (f *ring0Factory) FlagSet() *pflag.FlagSet {
return f.flags
}
// Set showSecrets false to filter out stuff like secrets.
func (f *ring0Factory) Command(cmd *cobra.Command, showSecrets bool) string {
if len(os.Args) == 0 {
@ -432,7 +407,8 @@ func (f *ring0Factory) BindFlags(flags *pflag.FlagSet) {
// to do that automatically for every subcommand.
flags.BoolVar(&f.requireMatchedServerVersion, FlagMatchBinaryVersion, false, "Require server version to match client version")
f.discoveryFactory.BindFlags(flags)
defaultCacheDir := filepath.Join(homedir.HomeDir(), ".kube", "http-cache")
flags.StringVar(&f.discoveryCacheDir, FlagHTTPCacheDir, defaultCacheDir, "Default HTTP cache directory")
// Normalize all flags that are coming from other packages or pre-configurations
// a.k.a. change all "_" to "-". e.g. glog package

32
pkg/kubectl/cmd/util/factory_test.go
View File

@ -32,11 +32,8 @@ import (
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/apimachinery/pkg/watch"
"k8s.io/apiserver/pkg/util/flag"
manualfake "k8s.io/client-go/rest/fake"
testcore "k8s.io/client-go/testing"
"k8s.io/client-go/tools/clientcmd"
clientcmdapi "k8s.io/client-go/tools/clientcmd/api"
"k8s.io/kubernetes/pkg/api/legacyscheme"
"k8s.io/kubernetes/pkg/api/testapi"
api "k8s.io/kubernetes/pkg/apis/core"
@ -47,23 +44,6 @@ import (
"k8s.io/kubernetes/pkg/kubectl/resource"
)
func TestNewFactoryDefaultFlagBindings(t *testing.T) {
factory := NewFactory(nil)
if !factory.FlagSet().HasFlags() {
t.Errorf("Expected flags, but didn't get any")
}
}
func TestNewFactoryNoFlagBindings(t *testing.T) {
clientConfig := clientcmd.NewDefaultClientConfig(*clientcmdapi.NewConfig(), &clientcmd.ConfigOverrides{})
factory := NewFactory(clientConfig)
if factory.FlagSet().HasFlags() {
t.Errorf("Expected zero flags, but got %v", factory.FlagSet())
}
}
func TestPortsForObject(t *testing.T) {
f := NewFactory(nil)
@ -211,18 +191,6 @@ func TestCanBeExposed(t *testing.T) {
}
}
func TestFlagUnderscoreRenaming(t *testing.T) {
factory := NewFactory(nil)
factory.FlagSet().SetNormalizeFunc(flag.WordSepNormalizeFunc)
factory.FlagSet().Bool("valid_flag", false, "bool value")
// In case of failure of this test check this PR: spf13/pflag#23
if factory.FlagSet().Lookup("valid_flag").Name != "valid-flag" {
t.Fatalf("Expected flag name to be valid-flag, got %s", factory.FlagSet().Lookup("valid_flag").Name)
}
}
func newPodList(count, isUnready, isUnhealthy int, labels map[string]string) *api.PodList {
pods := []api.Pod{}
for i := 0; i < count; i++ {