forked from openshift/origin
/
delegated.go
209 lines (178 loc) · 6.58 KB
/
delegated.go
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package delegated
import (
"errors"
"fmt"
kapi "k8s.io/kubernetes/pkg/api"
kapierror "k8s.io/kubernetes/pkg/api/errors"
"k8s.io/kubernetes/pkg/api/meta"
"k8s.io/kubernetes/pkg/api/rest"
"k8s.io/kubernetes/pkg/api/unversioned"
"k8s.io/kubernetes/pkg/apimachinery/registered"
kclient "k8s.io/kubernetes/pkg/client/unversioned"
"k8s.io/kubernetes/pkg/kubectl/resource"
"k8s.io/kubernetes/pkg/runtime"
utilerrors "k8s.io/kubernetes/pkg/util/errors"
"k8s.io/kubernetes/pkg/util/sets"
"github.com/openshift/origin/pkg/api/latest"
authorizationapi "github.com/openshift/origin/pkg/authorization/api"
"github.com/openshift/origin/pkg/client"
configcmd "github.com/openshift/origin/pkg/config/cmd"
projectapi "github.com/openshift/origin/pkg/project/api"
projectrequestregistry "github.com/openshift/origin/pkg/project/registry/projectrequest"
templateapi "github.com/openshift/origin/pkg/template/api"
)
type REST struct {
message string
templateNamespace string
templateName string
openshiftClient *client.Client
kubeClient *kclient.Client
}
func NewREST(message, templateNamespace, templateName string, openshiftClient *client.Client, kubeClient *kclient.Client) *REST {
return &REST{
message: message,
templateNamespace: templateNamespace,
templateName: templateName,
openshiftClient: openshiftClient,
kubeClient: kubeClient,
}
}
func (r *REST) New() runtime.Object {
return &projectapi.ProjectRequest{}
}
func (r *REST) NewList() runtime.Object {
return &unversioned.Status{}
}
var _ = rest.Creater(&REST{})
func (r *REST) Create(ctx kapi.Context, obj runtime.Object) (runtime.Object, error) {
if err := rest.BeforeCreate(projectrequestregistry.Strategy, ctx, obj); err != nil {
return nil, err
}
projectRequest := obj.(*projectapi.ProjectRequest)
if _, err := r.openshiftClient.Projects().Get(projectRequest.Name); err == nil {
return nil, kapierror.NewAlreadyExists(projectapi.Resource("project"), projectRequest.Name)
}
projectName := projectRequest.Name
projectAdmin := ""
projectRequester := ""
if userInfo, exists := kapi.UserFrom(ctx); exists {
projectAdmin = userInfo.GetName()
projectRequester = userInfo.GetName()
}
template, err := r.getTemplate()
if err != nil {
return nil, err
}
for i := range template.Parameters {
switch template.Parameters[i].Name {
case ProjectAdminUserParam:
template.Parameters[i].Value = projectAdmin
case ProjectDescriptionParam:
template.Parameters[i].Value = projectRequest.Description
case ProjectDisplayNameParam:
template.Parameters[i].Value = projectRequest.DisplayName
case ProjectNameParam:
template.Parameters[i].Value = projectName
case ProjectRequesterParam:
template.Parameters[i].Value = projectRequester
}
}
list, err := r.openshiftClient.TemplateConfigs(kapi.NamespaceDefault).Create(template)
if err != nil {
return nil, err
}
if err := utilerrors.NewAggregate(runtime.DecodeList(list.Objects, kapi.Codecs.UniversalDecoder())); err != nil {
return nil, kapierror.NewInternalError(err)
}
// one of the items in this list should be the project. We are going to locate it, remove it from the list, create it separately
var projectFromTemplate *projectapi.Project
objectsToCreate := &kapi.List{}
for i := range list.Objects {
if templateProject, ok := list.Objects[i].(*projectapi.Project); ok {
projectFromTemplate = templateProject
if len(list.Objects) > (i + 1) {
objectsToCreate.Items = append(objectsToCreate.Items, list.Objects[i+1:]...)
}
break
}
objectsToCreate.Items = append(objectsToCreate.Items, list.Objects[i])
}
if projectFromTemplate == nil {
return nil, kapierror.NewInternalError(fmt.Errorf("the project template (%s/%s) is not correctly configured: must contain a project resource", r.templateNamespace, r.templateName))
}
// we split out project creation separately so that in a case of racers for the same project, only one will win and create the rest of their template objects
if _, err := r.openshiftClient.Projects().Create(projectFromTemplate); err != nil {
return nil, err
}
var restMapper meta.MultiRESTMapper
seenGroups := sets.String{}
for _, gv := range registered.EnabledVersions() {
if seenGroups.Has(gv.Group) {
continue
}
seenGroups.Insert(gv.Group)
groupMeta, err := registered.Group(gv.Group)
if err != nil {
continue
}
restMapper = meta.MultiRESTMapper(append(restMapper, groupMeta.RESTMapper))
}
bulk := configcmd.Bulk{
Mapper: restMapper,
Typer: kapi.Scheme,
RESTClientFactory: func(mapping *meta.RESTMapping) (resource.RESTClient, error) {
if latest.OriginKind(mapping.GroupVersionKind) {
return r.openshiftClient, nil
}
return r.kubeClient, nil
},
}
if err := utilerrors.NewAggregate(bulk.Create(objectsToCreate, projectName)); err != nil {
return nil, kapierror.NewInternalError(err)
}
return r.openshiftClient.Projects().Get(projectName)
}
func (r *REST) getTemplate() (*templateapi.Template, error) {
if len(r.templateNamespace) == 0 || len(r.templateName) == 0 {
return DefaultTemplate(), nil
}
return r.openshiftClient.Templates(r.templateNamespace).Get(r.templateName)
}
var _ = rest.Lister(&REST{})
func (r *REST) List(ctx kapi.Context, options *kapi.ListOptions) (runtime.Object, error) {
userInfo, exists := kapi.UserFrom(ctx)
if !exists {
return nil, errors.New("a user must be provided")
}
// the caller might not have permission to run a subject access review (he has it by default, but it could have been removed).
// So we'll escalate for the subject access review to determine rights
accessReview := &authorizationapi.SubjectAccessReview{
Action: authorizationapi.AuthorizationAttributes{
Verb: "create",
Group: projectapi.GroupName,
Resource: "projectrequests",
},
User: userInfo.GetName(),
Groups: sets.NewString(userInfo.GetGroups()...),
}
accessReviewResponse, err := r.openshiftClient.SubjectAccessReviews().Create(accessReview)
if err != nil {
return nil, err
}
if accessReviewResponse.Allowed {
return &unversioned.Status{Status: unversioned.StatusSuccess}, nil
}
forbiddenError, _ := kapierror.NewForbidden(projectapi.Resource("projectrequest"), "", errors.New("you may not request a new project via this API.")).(*kapierror.StatusError)
if len(r.message) > 0 {
forbiddenError.ErrStatus.Message = r.message
forbiddenError.ErrStatus.Details = &unversioned.StatusDetails{
Kind: "ProjectRequest",
Causes: []unversioned.StatusCause{
{Message: r.message},
},
}
} else {
forbiddenError.ErrStatus.Message = "You may not request a new project via this API."
}
return nil, forbiddenError
}