Merge pull request #66059 from hanxiaoshuai/apicfg

Automatic merge from submit-queue (batch tested with PRs 66058, 66059). 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>.

move apiserver Configuration to k8s.io/apiserver/pkg/apis/config

**What this PR does / why we need it**:
ref [#2354](https://github.com/kubernetes/community/pull/2354)
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:
After the related componentconfig  to be moved to staging, LeaderElectionConfiguration and DebuggingConfiguration should be clean up in pkg/apis/componentconfig
**Release note**:

```release-note
NONE
```

hack/.golint_failures

@@ -531,6 +531,7 @@ staging/src/k8s.io/apiserver/pkg/apis/audit
 staging/src/k8s.io/apiserver/pkg/apis/audit/v1alpha1
 staging/src/k8s.io/apiserver/pkg/apis/audit/v1beta1
 staging/src/k8s.io/apiserver/pkg/apis/audit/validation
+staging/src/k8s.io/apiserver/pkg/apis/config/v1alpha1
 staging/src/k8s.io/apiserver/pkg/apis/example
 staging/src/k8s.io/apiserver/pkg/apis/example/v1
 staging/src/k8s.io/apiserver/pkg/apis/example2

staging/src/BUILD

@@ -69,6 +69,7 @@ filegroup(
         "//staging/src/k8s.io/apiserver/pkg/admission:all-srcs",
         "//staging/src/k8s.io/apiserver/pkg/apis/apiserver:all-srcs",
         "//staging/src/k8s.io/apiserver/pkg/apis/audit:all-srcs",
+        "//staging/src/k8s.io/apiserver/pkg/apis/config:all-srcs",
         "//staging/src/k8s.io/apiserver/pkg/apis/example:all-srcs",
         "//staging/src/k8s.io/apiserver/pkg/apis/example2:all-srcs",
         "//staging/src/k8s.io/apiserver/pkg/audit:all-srcs",

staging/src/k8s.io/apiserver/pkg/apis/config/BUILD

@@ -0,0 +1,31 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "doc.go",
+        "types.go",
+        "zz_generated.deepcopy.go",
+    ],
+    importmap = "k8s.io/kubernetes/vendor/k8s.io/apiserver/pkg/apis/config",
+    importpath = "k8s.io/apiserver/pkg/apis/config",
+    visibility = ["//visibility:public"],
+    deps = ["//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library"],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [
+        ":package-srcs",
+        "//staging/src/k8s.io/apiserver/pkg/apis/config/v1alpha1:all-srcs",
+    ],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

staging/src/k8s.io/apiserver/pkg/apis/config/OWNERS

@@ -0,0 +1,7 @@
+approvers:
+- api-approvers
+- sttts
+- luxas
+reviewers:
+- api-reviewers
+- hanxiaoshuai

staging/src/k8s.io/apiserver/pkg/apis/config/doc.go

@@ -0,0 +1,19 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// +k8s:deepcopy-gen=package
+
+package config // import "k8s.io/apiserver/pkg/apis/config"

staging/src/k8s.io/apiserver/pkg/apis/config/types.go

@@ -0,0 +1,58 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package config
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+// LeaderElectionConfiguration defines the configuration of leader election
+// clients for components that can run with leader election enabled.
+type LeaderElectionConfiguration struct {
+	// leaderElect enables a leader election client to gain leadership
+	// before executing the main loop. Enable this when running replicated
+	// components for high availability.
+	LeaderElect bool
+	// leaseDuration is the duration that non-leader candidates will wait
+	// after observing a leadership renewal until attempting to acquire
+	// leadership of a led but unrenewed leader slot. This is effectively the
+	// maximum duration that a leader can be stopped before it is replaced
+	// by another candidate. This is only applicable if leader election is
+	// enabled.
+	LeaseDuration metav1.Duration
+	// renewDeadline is the interval between attempts by the acting master to
+	// renew a leadership slot before it stops leading. This must be less
+	// than or equal to the lease duration. This is only applicable if leader
+	// election is enabled.
+	RenewDeadline metav1.Duration
+	// retryPeriod is the duration the clients should wait between attempting
+	// acquisition and renewal of a leadership. This is only applicable if
+	// leader election is enabled.
+	RetryPeriod metav1.Duration
+	// resourceLock indicates the resource object type that will be used to lock
+	// during leader election cycles.
+	ResourceLock string
+}
+
+// DebuggingConfiguration holds configuration for Debugging related features.
+type DebuggingConfiguration struct {
+	// enableProfiling enables profiling via web interface host:port/debug/pprof/
+	EnableProfiling bool
+	// enableContentionProfiling enables lock contention profiling, if
+	// enableProfiling is true.
+	EnableContentionProfiling bool
+}

staging/src/k8s.io/apiserver/pkg/apis/config/v1alpha1/BUILD

@@ -0,0 +1,37 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "defaults.go",
+        "doc.go",
+        "register.go",
+        "types.go",
+        "zz_generated.conversion.go",
+        "zz_generated.deepcopy.go",
+        "zz_generated.defaults.go",
+    ],
+    importmap = "k8s.io/kubernetes/vendor/k8s.io/apiserver/pkg/apis/config/v1alpha1",
+    importpath = "k8s.io/apiserver/pkg/apis/config/v1alpha1",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//staging/src/k8s.io/apimachinery/pkg/conversion:go_default_library",
+        "//staging/src/k8s.io/apimachinery/pkg/runtime:go_default_library",
+        "//staging/src/k8s.io/apiserver/pkg/apis/config:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

staging/src/k8s.io/apiserver/pkg/apis/config/v1alpha1/defaults.go

@@ -0,0 +1,48 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1alpha1
+
+import (
+	"time"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	kruntime "k8s.io/apimachinery/pkg/runtime"
+)
+
+func addDefaultingFuncs(scheme *kruntime.Scheme) error {
+	return RegisterDefaults(scheme)
+}
+
+func SetDefaults_LeaderElectionConfiguration(obj *LeaderElectionConfiguration) {
+	booltrue := true
+	zero := metav1.Duration{}
+	if obj.LeaseDuration == zero {
+		obj.LeaseDuration = metav1.Duration{Duration: 15 * time.Second}
+	}
+	if obj.RenewDeadline == zero {
+		obj.RenewDeadline = metav1.Duration{Duration: 10 * time.Second}
+	}
+	if obj.RetryPeriod == zero {
+		obj.RetryPeriod = metav1.Duration{Duration: 2 * time.Second}
+	}
+	if obj.ResourceLock == "" {
+		obj.ResourceLock = EndpointsResourceLock
+	}
+	if obj.LeaderElect == nil {
+		obj.LeaderElect = &booltrue
+	}
+}

staging/src/k8s.io/apiserver/pkg/apis/config/v1alpha1/doc.go

@@ -0,0 +1,21 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// +k8s:deepcopy-gen=package
+// +k8s:conversion-gen=k8s.io/apiserver/pkg/apis/config
+// +k8s:defaulter-gen=TypeMeta
+
+package v1alpha1

staging/src/k8s.io/apiserver/pkg/apis/config/v1alpha1/register.go

@@ -0,0 +1,35 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1alpha1
+
+import (
+	"k8s.io/apimachinery/pkg/runtime"
+)
+
+var (
+	// localSchemeBuilder and AddToScheme will stay in k8s.io/kubernetes.
+	SchemeBuilder      runtime.SchemeBuilder
+	localSchemeBuilder = &SchemeBuilder
+	AddToScheme        = localSchemeBuilder.AddToScheme
+)
+
+func init() {
+	// We only register manually written functions here. The registration of the
+	// generated functions takes place in the generated files. The separation
+	// makes the code compile even when the generated files are missing.
+	localSchemeBuilder.Register(addDefaultingFuncs)
+}

staging/src/k8s.io/apiserver/pkg/apis/config/v1alpha1/types.go

@@ -0,0 +1,60 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1alpha1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+const EndpointsResourceLock = "endpoints"
+
+// LeaderElectionConfiguration defines the configuration of leader election
+// clients for components that can run with leader election enabled.
+type LeaderElectionConfiguration struct {
+	// leaderElect enables a leader election client to gain leadership
+	// before executing the main loop. Enable this when running replicated
+	// components for high availability.
+	LeaderElect *bool `json:"leaderElect"`
+	// leaseDuration is the duration that non-leader candidates will wait
+	// after observing a leadership renewal until attempting to acquire
+	// leadership of a led but unrenewed leader slot. This is effectively the
+	// maximum duration that a leader can be stopped before it is replaced
+	// by another candidate. This is only applicable if leader election is
+	// enabled.
+	LeaseDuration metav1.Duration `json:"leaseDuration"`
+	// renewDeadline is the interval between attempts by the acting master to
+	// renew a leadership slot before it stops leading. This must be less
+	// than or equal to the lease duration. This is only applicable if leader
+	// election is enabled.
+	RenewDeadline metav1.Duration `json:"renewDeadline"`
+	// retryPeriod is the duration the clients should wait between attempting
+	// acquisition and renewal of a leadership. This is only applicable if
+	// leader election is enabled.
+	RetryPeriod metav1.Duration `json:"retryPeriod"`
+	// resourceLock indicates the resource object type that will be used to lock
+	// during leader election cycles.
+	ResourceLock string `json:"resourceLock"`
+}
+
+// DebuggingConfiguration holds configuration for Debugging related features.
+type DebuggingConfiguration struct {
+	// enableProfiling enables profiling via web interface host:port/debug/pprof/
+	EnableProfiling bool `json:"enableProfiling"`
+	// enableContentionProfiling enables lock contention profiling, if
+	// enableProfiling is true.
+	EnableContentionProfiling bool `json:"enableContentionProfiling"`
+}

staging/src/k8s.io/apiserver/pkg/apis/config/v1alpha1/zz_generated.conversion.go

@@ -0,0 +1,112 @@
+// +build !ignore_autogenerated
+
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by conversion-gen. DO NOT EDIT.
+
+package v1alpha1
+
+import (
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	conversion "k8s.io/apimachinery/pkg/conversion"
+	runtime "k8s.io/apimachinery/pkg/runtime"
+	config "k8s.io/apiserver/pkg/apis/config"
+)
+
+func init() {
+	localSchemeBuilder.Register(RegisterConversions)
+}
+
+// RegisterConversions adds conversion functions to the given scheme.
+// Public to allow building arbitrary schemes.
+func RegisterConversions(s *runtime.Scheme) error {
+	if err := s.AddGeneratedConversionFunc((*DebuggingConfiguration)(nil), (*config.DebuggingConfiguration)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_DebuggingConfiguration_To_config_DebuggingConfiguration(a.(*DebuggingConfiguration), b.(*config.DebuggingConfiguration), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*config.DebuggingConfiguration)(nil), (*DebuggingConfiguration)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_config_DebuggingConfiguration_To_v1alpha1_DebuggingConfiguration(a.(*config.DebuggingConfiguration), b.(*DebuggingConfiguration), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*LeaderElectionConfiguration)(nil), (*config.LeaderElectionConfiguration)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_LeaderElectionConfiguration_To_config_LeaderElectionConfiguration(a.(*LeaderElectionConfiguration), b.(*config.LeaderElectionConfiguration), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*config.LeaderElectionConfiguration)(nil), (*LeaderElectionConfiguration)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_config_LeaderElectionConfiguration_To_v1alpha1_LeaderElectionConfiguration(a.(*config.LeaderElectionConfiguration), b.(*LeaderElectionConfiguration), scope)
+	}); err != nil {
+		return err
+	}
+	return nil
+}
+
+func autoConvert_v1alpha1_DebuggingConfiguration_To_config_DebuggingConfiguration(in *DebuggingConfiguration, out *config.DebuggingConfiguration, s conversion.Scope) error {
+	out.EnableProfiling = in.EnableProfiling
+	out.EnableContentionProfiling = in.EnableContentionProfiling
+	return nil
+}
+
+// Convert_v1alpha1_DebuggingConfiguration_To_config_DebuggingConfiguration is an autogenerated conversion function.
+func Convert_v1alpha1_DebuggingConfiguration_To_config_DebuggingConfiguration(in *DebuggingConfiguration, out *config.DebuggingConfiguration, s conversion.Scope) error {
+	return autoConvert_v1alpha1_DebuggingConfiguration_To_config_DebuggingConfiguration(in, out, s)
+}
+
+func autoConvert_config_DebuggingConfiguration_To_v1alpha1_DebuggingConfiguration(in *config.DebuggingConfiguration, out *DebuggingConfiguration, s conversion.Scope) error {
+	out.EnableProfiling = in.EnableProfiling
+	out.EnableContentionProfiling = in.EnableContentionProfiling
+	return nil
+}
+
+// Convert_config_DebuggingConfiguration_To_v1alpha1_DebuggingConfiguration is an autogenerated conversion function.
+func Convert_config_DebuggingConfiguration_To_v1alpha1_DebuggingConfiguration(in *config.DebuggingConfiguration, out *DebuggingConfiguration, s conversion.Scope) error {
+	return autoConvert_config_DebuggingConfiguration_To_v1alpha1_DebuggingConfiguration(in, out, s)
+}
+
+func autoConvert_v1alpha1_LeaderElectionConfiguration_To_config_LeaderElectionConfiguration(in *LeaderElectionConfiguration, out *config.LeaderElectionConfiguration, s conversion.Scope) error {
+	if err := v1.Convert_Pointer_bool_To_bool(&in.LeaderElect, &out.LeaderElect, s); err != nil {
+		return err
+	}
+	out.LeaseDuration = in.LeaseDuration
+	out.RenewDeadline = in.RenewDeadline
+	out.RetryPeriod = in.RetryPeriod
+	out.ResourceLock = in.ResourceLock
+	return nil
+}
+
+// Convert_v1alpha1_LeaderElectionConfiguration_To_config_LeaderElectionConfiguration is an autogenerated conversion function.
+func Convert_v1alpha1_LeaderElectionConfiguration_To_config_LeaderElectionConfiguration(in *LeaderElectionConfiguration, out *config.LeaderElectionConfiguration, s conversion.Scope) error {
+	return autoConvert_v1alpha1_LeaderElectionConfiguration_To_config_LeaderElectionConfiguration(in, out, s)
+}
+
+func autoConvert_config_LeaderElectionConfiguration_To_v1alpha1_LeaderElectionConfiguration(in *config.LeaderElectionConfiguration, out *LeaderElectionConfiguration, s conversion.Scope) error {
+	if err := v1.Convert_bool_To_Pointer_bool(&in.LeaderElect, &out.LeaderElect, s); err != nil {
+		return err
+	}
+	out.LeaseDuration = in.LeaseDuration
+	out.RenewDeadline = in.RenewDeadline
+	out.RetryPeriod = in.RetryPeriod
+	out.ResourceLock = in.ResourceLock
+	return nil
+}
+
+// Convert_config_LeaderElectionConfiguration_To_v1alpha1_LeaderElectionConfiguration is an autogenerated conversion function.
+func Convert_config_LeaderElectionConfiguration_To_v1alpha1_LeaderElectionConfiguration(in *config.LeaderElectionConfiguration, out *LeaderElectionConfiguration, s conversion.Scope) error {
+	return autoConvert_config_LeaderElectionConfiguration_To_v1alpha1_LeaderElectionConfiguration(in, out, s)
+}

staging/src/k8s.io/apiserver/pkg/apis/config/v1alpha1/zz_generated.deepcopy.go

@@ -0,0 +1,61 @@
+// +build !ignore_autogenerated
+
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by deepcopy-gen. DO NOT EDIT.
+
+package v1alpha1
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *DebuggingConfiguration) DeepCopyInto(out *DebuggingConfiguration) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new DebuggingConfiguration.
+func (in *DebuggingConfiguration) DeepCopy() *DebuggingConfiguration {
+	if in == nil {
+		return nil
+	}
+	out := new(DebuggingConfiguration)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *LeaderElectionConfiguration) DeepCopyInto(out *LeaderElectionConfiguration) {
+	*out = *in
+	if in.LeaderElect != nil {
+		in, out := &in.LeaderElect, &out.LeaderElect
+		*out = new(bool)
+		**out = **in
+	}
+	out.LeaseDuration = in.LeaseDuration
+	out.RenewDeadline = in.RenewDeadline
+	out.RetryPeriod = in.RetryPeriod
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new LeaderElectionConfiguration.
+func (in *LeaderElectionConfiguration) DeepCopy() *LeaderElectionConfiguration {
+	if in == nil {
+		return nil
+	}
+	out := new(LeaderElectionConfiguration)
+	in.DeepCopyInto(out)
+	return out
+}

staging/src/k8s.io/apiserver/pkg/apis/config/v1alpha1/zz_generated.defaults.go

@@ -0,0 +1,32 @@
+// +build !ignore_autogenerated
+
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by defaulter-gen. DO NOT EDIT.
+
+package v1alpha1
+
+import (
+	runtime "k8s.io/apimachinery/pkg/runtime"
+)
+
+// RegisterDefaults adds defaulters functions to the given scheme.
+// Public to allow building arbitrary schemes.
+// All generated defaulters are covering - they call all nested defaulters.
+func RegisterDefaults(scheme *runtime.Scheme) error {
+	return nil
+}

staging/src/k8s.io/apiserver/pkg/apis/config/zz_generated.deepcopy.go

@@ -0,0 +1,56 @@
+// +build !ignore_autogenerated
+
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by deepcopy-gen. DO NOT EDIT.
+
+package config
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *DebuggingConfiguration) DeepCopyInto(out *DebuggingConfiguration) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new DebuggingConfiguration.
+func (in *DebuggingConfiguration) DeepCopy() *DebuggingConfiguration {
+	if in == nil {
+		return nil
+	}
+	out := new(DebuggingConfiguration)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *LeaderElectionConfiguration) DeepCopyInto(out *LeaderElectionConfiguration) {
+	*out = *in
+	out.LeaseDuration = in.LeaseDuration
+	out.RenewDeadline = in.RenewDeadline
+	out.RetryPeriod = in.RetryPeriod
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new LeaderElectionConfiguration.
+func (in *LeaderElectionConfiguration) DeepCopy() *LeaderElectionConfiguration {
+	if in == nil {
+		return nil
+	}
+	out := new(LeaderElectionConfiguration)
+	in.DeepCopyInto(out)
+	return out
+}