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apiserver.go
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/
apiserver.go
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package apiserver
import (
"sync"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/serializer"
"k8s.io/apiserver/pkg/authorization/authorizer"
"k8s.io/apiserver/pkg/registry/rest"
genericapiserver "k8s.io/apiserver/pkg/server"
restclient "k8s.io/client-go/rest"
kclientsetinternal "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
kinternalinformers "k8s.io/kubernetes/pkg/client/informers/informers_generated/internalversion"
securityapiv1 "github.com/openshift/api/security/v1"
"github.com/openshift/origin/pkg/security/apiserver/registry/podsecuritypolicyreview"
"github.com/openshift/origin/pkg/security/apiserver/registry/podsecuritypolicyselfsubjectreview"
"github.com/openshift/origin/pkg/security/apiserver/registry/podsecuritypolicysubjectreview"
"github.com/openshift/origin/pkg/security/apiserver/registry/rangeallocations"
sccstorage "github.com/openshift/origin/pkg/security/apiserver/registry/securitycontextconstraints/etcd"
securityinformer "github.com/openshift/origin/pkg/security/generated/informers/internalversion"
oscc "github.com/openshift/origin/pkg/security/securitycontextconstraints"
)
type ExtraConfig struct {
KubeAPIServerClientConfig *restclient.Config
// SCCStorage is actually created with a kubernetes restmapper options to have the correct prefix,
// so we have to have it special cased here to point to the right spot.
SCCStorage *sccstorage.REST
SecurityInformers securityinformer.SharedInformerFactory
KubeInternalInformers kinternalinformers.SharedInformerFactory
Authorizer authorizer.Authorizer
// TODO these should all become local eventually
Scheme *runtime.Scheme
Codecs serializer.CodecFactory
makeV1Storage sync.Once
v1Storage map[string]rest.Storage
v1StorageErr error
}
type SecurityAPIServerConfig struct {
GenericConfig *genericapiserver.RecommendedConfig
ExtraConfig ExtraConfig
}
type SecurityAPIServer struct {
GenericAPIServer *genericapiserver.GenericAPIServer
}
type completedConfig struct {
GenericConfig genericapiserver.CompletedConfig
ExtraConfig *ExtraConfig
}
type CompletedConfig struct {
// Embed a private pointer that cannot be instantiated outside of this package.
*completedConfig
}
// Complete fills in any fields not set that are required to have valid data. It's mutating the receiver.
func (c *SecurityAPIServerConfig) Complete() completedConfig {
cfg := completedConfig{
c.GenericConfig.Complete(),
&c.ExtraConfig,
}
return cfg
}
// New returns a new instance of SecurityAPIServer from the given config.
func (c completedConfig) New(delegationTarget genericapiserver.DelegationTarget) (*SecurityAPIServer, error) {
genericServer, err := c.GenericConfig.New("security.openshift.io-apiserver", delegationTarget)
if err != nil {
return nil, err
}
s := &SecurityAPIServer{
GenericAPIServer: genericServer,
}
v1Storage, err := c.V1RESTStorage()
if err != nil {
return nil, err
}
apiGroupInfo := genericapiserver.NewDefaultAPIGroupInfo(securityapiv1.GroupName, c.ExtraConfig.Scheme, metav1.ParameterCodec, c.ExtraConfig.Codecs)
apiGroupInfo.VersionedResourcesStorageMap[securityapiv1.SchemeGroupVersion.Version] = v1Storage
if err := s.GenericAPIServer.InstallAPIGroup(&apiGroupInfo); err != nil {
return nil, err
}
return s, nil
}
func (c *completedConfig) V1RESTStorage() (map[string]rest.Storage, error) {
c.ExtraConfig.makeV1Storage.Do(func() {
c.ExtraConfig.v1Storage, c.ExtraConfig.v1StorageErr = c.newV1RESTStorage()
})
return c.ExtraConfig.v1Storage, c.ExtraConfig.v1StorageErr
}
func (c *completedConfig) newV1RESTStorage() (map[string]rest.Storage, error) {
kubeInternalClient, err := kclientsetinternal.NewForConfig(c.ExtraConfig.KubeAPIServerClientConfig)
if err != nil {
return nil, err
}
sccStorage := c.ExtraConfig.SCCStorage
// TODO allow this when we're sure that its storing correctly and we want to allow starting up without embedding kube
if false && sccStorage == nil {
sccStorage = sccstorage.NewREST(c.GenericConfig.RESTOptionsGetter)
}
sccMatcher := oscc.NewDefaultSCCMatcher(c.ExtraConfig.SecurityInformers.Security().InternalVersion().SecurityContextConstraints().Lister(), c.ExtraConfig.Authorizer)
podSecurityPolicyReviewStorage := podsecuritypolicyreview.NewREST(
sccMatcher,
c.ExtraConfig.KubeInternalInformers.Core().InternalVersion().ServiceAccounts().Lister(),
kubeInternalClient,
)
podSecurityPolicySubjectStorage := podsecuritypolicysubjectreview.NewREST(
sccMatcher,
kubeInternalClient,
)
podSecurityPolicySelfSubjectReviewStorage := podsecuritypolicyselfsubjectreview.NewREST(
sccMatcher,
kubeInternalClient,
)
uidRangeStorage := rangeallocations.NewREST(c.GenericConfig.RESTOptionsGetter)
v1Storage := map[string]rest.Storage{}
v1Storage["securityContextConstraints"] = sccStorage
v1Storage["podSecurityPolicyReviews"] = podSecurityPolicyReviewStorage
v1Storage["podSecurityPolicySubjectReviews"] = podSecurityPolicySubjectStorage
v1Storage["podSecurityPolicySelfSubjectReviews"] = podSecurityPolicySelfSubjectReviewStorage
v1Storage["rangeallocations"] = uidRangeStorage
return v1Storage, nil
}