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proxy.go
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proxy.go
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package proxy
import (
"fmt"
kapi "k8s.io/kubernetes/pkg/api"
kerrors "k8s.io/kubernetes/pkg/api/errors"
"k8s.io/kubernetes/pkg/api/meta"
"k8s.io/kubernetes/pkg/api/rest"
"k8s.io/kubernetes/pkg/api/unversioned"
kclient "k8s.io/kubernetes/pkg/client/unversioned"
"k8s.io/kubernetes/pkg/registry/generic"
nsregistry "k8s.io/kubernetes/pkg/registry/namespace"
"k8s.io/kubernetes/pkg/runtime"
"k8s.io/kubernetes/pkg/watch"
oapi "github.com/openshift/origin/pkg/api"
authorizationapi "github.com/openshift/origin/pkg/authorization/api"
"github.com/openshift/origin/pkg/authorization/authorizer/scope"
"github.com/openshift/origin/pkg/project/api"
projectapi "github.com/openshift/origin/pkg/project/api"
projectauth "github.com/openshift/origin/pkg/project/auth"
projectcache "github.com/openshift/origin/pkg/project/cache"
projectregistry "github.com/openshift/origin/pkg/project/registry/project"
projectutil "github.com/openshift/origin/pkg/project/util"
)
type REST struct {
// client can modify Kubernetes namespaces
client kclient.NamespaceInterface
// lister can enumerate project lists that enforce policy
lister projectauth.Lister
// Allows extended behavior during creation, required
createStrategy rest.RESTCreateStrategy
// Allows extended behavior during updates, required
updateStrategy rest.RESTUpdateStrategy
authCache *projectauth.AuthorizationCache
projectCache *projectcache.ProjectCache
}
// NewREST returns a RESTStorage object that will work against Project resources
func NewREST(client kclient.NamespaceInterface, lister projectauth.Lister, authCache *projectauth.AuthorizationCache, projectCache *projectcache.ProjectCache) *REST {
return &REST{
client: client,
lister: lister,
createStrategy: projectregistry.Strategy,
updateStrategy: projectregistry.Strategy,
authCache: authCache,
projectCache: projectCache,
}
}
// New returns a new Project
func (s *REST) New() runtime.Object {
return &api.Project{}
}
// NewList returns a new ProjectList
func (*REST) NewList() runtime.Object {
return &api.ProjectList{}
}
var _ = rest.Lister(&REST{})
// List retrieves a list of Projects that match label.
func (s *REST) List(ctx kapi.Context, options *kapi.ListOptions) (runtime.Object, error) {
user, ok := kapi.UserFrom(ctx)
if !ok {
return nil, kerrors.NewForbidden(projectapi.Resource("project"), "", fmt.Errorf("unable to list projects without a user on the context"))
}
namespaceList, err := s.lister.List(user)
if err != nil {
return nil, err
}
m := nsregistry.MatchNamespace(oapi.ListOptionsToSelectors(options))
list, err := filterList(namespaceList, m, nil)
if err != nil {
return nil, err
}
return projectutil.ConvertNamespaceList(list.(*kapi.NamespaceList)), nil
}
func (s *REST) Watch(ctx kapi.Context, options *kapi.ListOptions) (watch.Interface, error) {
if ctx == nil {
return nil, fmt.Errorf("Context is nil")
}
userInfo, exists := kapi.UserFrom(ctx)
if !exists {
return nil, fmt.Errorf("no user")
}
includeAllExistingProjects := (options != nil) && options.ResourceVersion == "0"
allowedNamespaces, err := scope.ScopesToVisibleNamespaces(userInfo.GetExtra()[authorizationapi.ScopesKey], s.authCache.GetClusterPolicyLister().ClusterPolicies())
if err != nil {
return nil, err
}
watcher := projectauth.NewUserProjectWatcher(userInfo, allowedNamespaces, s.projectCache, s.authCache, includeAllExistingProjects)
s.authCache.AddWatcher(watcher)
go watcher.Watch()
return watcher, nil
}
var _ = rest.Getter(&REST{})
// Get retrieves a Project by name
func (s *REST) Get(ctx kapi.Context, name string) (runtime.Object, error) {
namespace, err := s.client.Get(name)
if err != nil {
return nil, err
}
return projectutil.ConvertNamespace(namespace), nil
}
var _ = rest.Creater(&REST{})
// Create registers the given Project.
func (s *REST) Create(ctx kapi.Context, obj runtime.Object) (runtime.Object, error) {
project, ok := obj.(*api.Project)
if !ok {
return nil, fmt.Errorf("not a project: %#v", obj)
}
kapi.FillObjectMetaSystemFields(ctx, &project.ObjectMeta)
s.createStrategy.PrepareForCreate(obj)
if errs := s.createStrategy.Validate(ctx, obj); len(errs) > 0 {
return nil, kerrors.NewInvalid(projectapi.Kind("Project"), project.Name, errs)
}
namespace, err := s.client.Create(projectutil.ConvertProject(project))
if err != nil {
return nil, err
}
return projectutil.ConvertNamespace(namespace), nil
}
var _ = rest.Updater(&REST{})
func (s *REST) Update(ctx kapi.Context, name string, objInfo rest.UpdatedObjectInfo) (runtime.Object, bool, error) {
oldObj, err := s.Get(ctx, name)
if err != nil {
return nil, false, err
}
obj, err := objInfo.UpdatedObject(ctx, oldObj)
if err != nil {
return nil, false, err
}
project, ok := obj.(*api.Project)
if !ok {
return nil, false, fmt.Errorf("not a project: %#v", obj)
}
s.updateStrategy.PrepareForUpdate(obj, oldObj)
if errs := s.updateStrategy.ValidateUpdate(ctx, obj, oldObj); len(errs) > 0 {
return nil, false, kerrors.NewInvalid(projectapi.Kind("Project"), project.Name, errs)
}
namespace, err := s.client.Update(projectutil.ConvertProject(project))
if err != nil {
return nil, false, err
}
return projectutil.ConvertNamespace(namespace), false, nil
}
var _ = rest.Deleter(&REST{})
// Delete deletes a Project specified by its name
func (s *REST) Delete(ctx kapi.Context, name string) (runtime.Object, error) {
return &unversioned.Status{Status: unversioned.StatusSuccess}, s.client.Delete(name)
}
// decoratorFunc can mutate the provided object prior to being returned.
type decoratorFunc func(obj runtime.Object) error
// filterList filters any list object that conforms to the api conventions,
// provided that 'm' works with the concrete type of list. d is an optional
// decorator for the returned functions. Only matching items are decorated.
func filterList(list runtime.Object, m generic.Matcher, d decoratorFunc) (filtered runtime.Object, err error) {
// TODO: push a matcher down into tools.etcdHelper to avoid all this
// nonsense. This is a lot of unnecessary copies.
items, err := meta.ExtractList(list)
if err != nil {
return nil, err
}
var filteredItems []runtime.Object
for _, obj := range items {
match, err := m.Matches(obj)
if err != nil {
return nil, err
}
if match {
if d != nil {
if err := d(obj); err != nil {
return nil, err
}
}
filteredItems = append(filteredItems, obj)
}
}
err = meta.SetList(list, filteredItems)
if err != nil {
return nil, err
}
return list, nil
}