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generate dummy admission controller when specifying `--admission-cont…
…roller` extend Config fields w/ admission controller and post-start hooks
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| package generators | ||
|
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| import ( | ||
| "fmt" | ||
| "io" | ||
| "k8s.io/klog" | ||
| "os" | ||
| "path/filepath" | ||
| "strings" | ||
| "text/template" | ||
|
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| "k8s.io/gengo/generator" | ||
| ) | ||
|
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| var _ generator.Generator = &apiGenerator{} | ||
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| type admissionGenerator struct { | ||
| generator.DefaultGen | ||
| projectRootPath string | ||
| admissionKinds []string | ||
| } | ||
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| func CreateAdmissionGenerator(apis *APIs, filename string, projectRootPath string, outputBase string) generator.Generator { | ||
| admissionKinds := []string{} | ||
| // filter out those resources created w/ `--admission-controller` flag | ||
| for _, group := range apis.Groups { | ||
| for _, version := range group.Versions { | ||
| for _, resource := range version.Resources { | ||
| resourceAdmissionControllerPkg := filepath.Join(outputBase, projectRootPath, "plugin", "admission", strings.ToLower(resource.Kind)) | ||
| // if "<repo>/plugin/admission" package is present in the project, add it to the generated installation function | ||
| if _, err := os.Stat(resourceAdmissionControllerPkg); err == nil { | ||
| admissionKinds = append(admissionKinds, resource.Kind) | ||
| klog.V(5).Infof("found existing admission controller for resource: %v/%v", resource.Group, resource.Kind) | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| return &admissionGenerator{ | ||
| generator.DefaultGen{OptionalName: filename}, | ||
| projectRootPath, | ||
| admissionKinds, | ||
| } | ||
| } | ||
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| func (d *admissionGenerator) Imports(c *generator.Context) []string { | ||
| imports := []string{ | ||
| "github.com/kubernetes-incubator/apiserver-builder-alpha/pkg/cmd/server", | ||
| "k8s.io/client-go/rest", | ||
| `genericserver "k8s.io/apiserver/pkg/server"`, | ||
| } | ||
| for _, kind := range d.admissionKinds { | ||
| imports = append(imports, fmt.Sprintf( | ||
| `. "%s/plugin/admission/%s"`, d.projectRootPath, strings.ToLower(kind))) | ||
| } | ||
| imports = append(imports, | ||
| fmt.Sprintf(`aggregatedclientset "%s/pkg/client/clientset_generated/clientset"`, d.projectRootPath)) | ||
| imports = append(imports, | ||
| fmt.Sprintf(`aggregatedinformerfactory "%s/pkg/client/informers_generated/externalversions"`, d.projectRootPath)) | ||
| imports = append(imports, | ||
| fmt.Sprintf(`intializer "%s/plugin/admission"`, d.projectRootPath)) | ||
| return imports | ||
| } | ||
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| type AdmissionGeneratorParam struct { | ||
| Kind string | ||
| } | ||
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| func (d *admissionGenerator) Finalize(context *generator.Context, w io.Writer) error { | ||
| if len(d.admissionKinds) == 0 { | ||
| return nil | ||
| } | ||
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| temp := template.Must(template.New("admission-install-template").Parse(AdmissionsInstallTemplate)) | ||
| return temp.Execute(w, &struct { | ||
| Admissions []string | ||
| }{ | ||
| Admissions: d.admissionKinds, | ||
| }) | ||
| } | ||
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| var AdmissionsInstallTemplate = ` | ||
| func init() { | ||
| server.AggregatedAdmissionInitializerGetter = GetAggregatedResourceAdmissionControllerInitializer | ||
| {{ range .Admissions -}} | ||
| server.AggregatedAdmissionPlugins["{{.}}"] = New{{.}}Plugin() | ||
| {{ end }} | ||
| } | ||
| func GetAggregatedResourceAdmissionControllerInitializer(config *rest.Config) (admission.PluginInitializer, genericserver.PostStartHookFunc) { | ||
| // init aggregated resource clients | ||
| aggregatedResourceClient := aggregatedclientset.NewForConfigOrDie(config) | ||
| aggregatedInformerFactory := aggregatedinformerfactory.NewSharedInformerFactory(aggregatedResourceClient, 0) | ||
| aggregatedResourceInitializer := intializer.New(aggregatedResourceClient, aggregatedInformerFactory) | ||
| return aggregatedResourceInitializer, func(context genericserver.PostStartHookContext) error { | ||
| aggregatedInformerFactory.Start(context.StopCh) | ||
| return nil | ||
| } | ||
| } | ||
| ` |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
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| /* | ||
| Copyright YEAR 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. | ||
| */ | ||
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| package deeponeadmission | ||
|
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| import ( | ||
| "fmt" | ||
| aggregatedadmission "github.com/kubernetes-incubator/apiserver-builder-alpha/example/plugin/admission" | ||
| aggregatedinformerfactory "github.com/kubernetes-incubator/apiserver-builder-alpha/example/pkg/client/informers_generated/externalversions" | ||
| aggregatedclientset "github.com/kubernetes-incubator/apiserver-builder-alpha/example/pkg/client/clientset_generated/clientset" | ||
| genericadmissioninitializer "k8s.io/apiserver/pkg/admission/initializer" | ||
| "k8s.io/client-go/informers" | ||
| "k8s.io/client-go/kubernetes" | ||
| "k8s.io/apiserver/pkg/admission" | ||
| ) | ||
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| var _ admission.Interface = &deeponePlugin{} | ||
| var _ admission.MutationInterface = &deeponePlugin{} | ||
| var _ admission.ValidationInterface = &deeponePlugin{} | ||
| var _ genericadmissioninitializer.WantsExternalKubeInformerFactory = &deeponePlugin{} | ||
| var _ genericadmissioninitializer.WantsExternalKubeClientSet = &deeponePlugin{} | ||
| var _ aggregatedadmission.WantsAggregatedResourceInformerFactory = &deeponePlugin{} | ||
| var _ aggregatedadmission.WantsAggregatedResourceClientSet = &deeponePlugin{} | ||
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| func NewDeepOnePlugin() *deeponePlugin { | ||
| return &deeponePlugin{ | ||
| Handler: admission.NewHandler(admission.Create, admission.Update), | ||
| } | ||
| } | ||
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| type deeponePlugin struct { | ||
| *admission.Handler | ||
| } | ||
|
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| func (p *deeponePlugin) ValidateInitialization() error { | ||
| return nil | ||
| } | ||
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| func (p *deeponePlugin) Admit(a admission.Attributes) error { | ||
| fmt.Println("admitting deepones") | ||
| return nil | ||
| } | ||
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| func (p *deeponePlugin) Validate(a admission.Attributes) error { | ||
| return nil | ||
| } | ||
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| func (p *deeponePlugin) SetAggregatedResourceInformerFactory(aggregatedinformerfactory.SharedInformerFactory) {} | ||
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| func (p *deeponePlugin) SetAggregatedResourceClientSet(aggregatedclientset.Interface) {} | ||
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| func (p *deeponePlugin) SetExternalKubeInformerFactory(informers.SharedInformerFactory) {} | ||
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| func (p *deeponePlugin) SetExternalKubeClientSet(kubernetes.Interface) {} |
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