129 lines
3.9 KiB
Go
129 lines
3.9 KiB
Go
// Copyright 2020 the Pinniped contributors. All Rights Reserved.
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// SPDX-License-Identifier: Apache-2.0
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package apiserver
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import (
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"context"
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"fmt"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/runtime/serializer"
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utilruntime "k8s.io/apimachinery/pkg/util/runtime"
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"k8s.io/apiserver/pkg/registry/rest"
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genericapiserver "k8s.io/apiserver/pkg/server"
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"k8s.io/client-go/pkg/version"
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loginapi "go.pinniped.dev/generated/1.19/apis/concierge/login"
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loginv1alpha1 "go.pinniped.dev/generated/1.19/apis/concierge/login/v1alpha1"
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"go.pinniped.dev/internal/plog"
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"go.pinniped.dev/internal/registry/credentialrequest"
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)
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var (
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//nolint: gochecknoglobals
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scheme = runtime.NewScheme()
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//nolint: gochecknoglobals, golint
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Codecs = serializer.NewCodecFactory(scheme)
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)
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//nolint: gochecknoinits
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func init() {
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utilruntime.Must(loginv1alpha1.AddToScheme(scheme))
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utilruntime.Must(loginapi.AddToScheme(scheme))
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// add the options to empty v1
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metav1.AddToGroupVersion(scheme, schema.GroupVersion{Version: "v1"})
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unversioned := schema.GroupVersion{Group: "", Version: "v1"}
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scheme.AddUnversionedTypes(unversioned,
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&metav1.Status{},
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&metav1.APIVersions{},
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&metav1.APIGroupList{},
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&metav1.APIGroup{},
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&metav1.APIResourceList{},
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)
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}
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type Config struct {
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GenericConfig *genericapiserver.RecommendedConfig
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ExtraConfig ExtraConfig
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}
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type ExtraConfig struct {
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Authenticator credentialrequest.TokenCredentialRequestAuthenticator
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Issuer credentialrequest.CertIssuer
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StartControllersPostStartHook func(ctx context.Context)
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}
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type PinnipedServer struct {
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GenericAPIServer *genericapiserver.GenericAPIServer
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}
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type completedConfig struct {
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GenericConfig genericapiserver.CompletedConfig
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ExtraConfig *ExtraConfig
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}
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type CompletedConfig struct {
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// Embed a private pointer that cannot be instantiated outside of this package.
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*completedConfig
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}
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// Complete fills in any fields not set that are required to have valid data. It's mutating the receiver.
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func (c *Config) Complete() CompletedConfig {
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completedCfg := completedConfig{
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c.GenericConfig.Complete(),
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&c.ExtraConfig,
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}
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versionInfo := version.Get()
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completedCfg.GenericConfig.Version = &versionInfo
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return CompletedConfig{completedConfig: &completedCfg}
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}
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// New returns a new instance of AdmissionServer from the given config.
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func (c completedConfig) New() (*PinnipedServer, error) {
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genericServer, err := c.GenericConfig.New("pinniped-concierge", genericapiserver.NewEmptyDelegate()) // completion is done in Complete, no need for a second time
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if err != nil {
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return nil, fmt.Errorf("completion error: %w", err)
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}
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s := &PinnipedServer{
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GenericAPIServer: genericServer,
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}
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gvr := loginv1alpha1.SchemeGroupVersion.WithResource("tokencredentialrequests")
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storage := credentialrequest.NewREST(c.ExtraConfig.Authenticator, c.ExtraConfig.Issuer)
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if err := s.GenericAPIServer.InstallAPIGroup(&genericapiserver.APIGroupInfo{
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PrioritizedVersions: []schema.GroupVersion{gvr.GroupVersion()},
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VersionedResourcesStorageMap: map[string]map[string]rest.Storage{gvr.Version: {gvr.Resource: storage}},
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OptionsExternalVersion: &schema.GroupVersion{Version: "v1"},
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Scheme: scheme,
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ParameterCodec: metav1.ParameterCodec,
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NegotiatedSerializer: Codecs,
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}); err != nil {
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return nil, fmt.Errorf("could not install API group %s: %w", gvr.String(), err)
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}
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s.GenericAPIServer.AddPostStartHookOrDie("start-controllers",
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func(postStartContext genericapiserver.PostStartHookContext) error {
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plog.Debug("start-controllers post start hook starting")
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ctx, cancel := context.WithCancel(context.Background())
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go func() {
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<-postStartContext.StopCh
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cancel()
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}()
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c.ExtraConfig.StartControllersPostStartHook(ctx)
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return nil
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},
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)
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return s, nil
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}
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