546 lines
19 KiB
Go
546 lines
19 KiB
Go
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// +build integration,!no-etcd
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/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package auth
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import (
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"fmt"
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"io"
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"io/ioutil"
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"net/http"
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"net/http/httputil"
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"strings"
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"testing"
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"time"
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"github.com/golang/glog"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/watch"
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"k8s.io/apiserver/pkg/authentication/authenticator"
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"k8s.io/apiserver/pkg/authentication/request/bearertoken"
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"k8s.io/apiserver/pkg/authorization/authorizer"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/testapi"
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rbacapi "k8s.io/kubernetes/pkg/apis/rbac"
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clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
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"k8s.io/kubernetes/pkg/client/restclient"
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"k8s.io/kubernetes/pkg/client/transport"
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"k8s.io/kubernetes/pkg/master"
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"k8s.io/kubernetes/pkg/registry/generic"
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"k8s.io/kubernetes/pkg/registry/rbac/clusterrole"
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clusterrolestore "k8s.io/kubernetes/pkg/registry/rbac/clusterrole/storage"
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"k8s.io/kubernetes/pkg/registry/rbac/clusterrolebinding"
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clusterrolebindingstore "k8s.io/kubernetes/pkg/registry/rbac/clusterrolebinding/storage"
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"k8s.io/kubernetes/pkg/registry/rbac/role"
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rolestore "k8s.io/kubernetes/pkg/registry/rbac/role/storage"
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"k8s.io/kubernetes/pkg/registry/rbac/rolebinding"
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rolebindingstore "k8s.io/kubernetes/pkg/registry/rbac/rolebinding/storage"
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"k8s.io/kubernetes/plugin/pkg/auth/authenticator/token/anytoken"
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"k8s.io/kubernetes/plugin/pkg/auth/authorizer/rbac"
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"k8s.io/kubernetes/test/integration/framework"
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)
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func newFakeAuthenticator() authenticator.Request {
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return bearertoken.New(anytoken.AnyTokenAuthenticator{})
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}
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func clientForUser(user string) *http.Client {
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return &http.Client{
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Transport: transport.NewBearerAuthRoundTripper(
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user,
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transport.DebugWrappers(http.DefaultTransport),
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),
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}
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}
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func clientsetForUser(user string, config *restclient.Config) clientset.Interface {
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configCopy := *config
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configCopy.BearerToken = user
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return clientset.NewForConfigOrDie(&configCopy)
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}
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type testRESTOptionsGetter struct {
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config *master.Config
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}
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func (getter *testRESTOptionsGetter) GetRESTOptions(resource schema.GroupResource) (generic.RESTOptions, error) {
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storageConfig, err := getter.config.StorageFactory.NewConfig(resource)
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if err != nil {
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return generic.RESTOptions{}, fmt.Errorf("failed to get storage: %v", err)
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}
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return generic.RESTOptions{StorageConfig: storageConfig, Decorator: generic.UndecoratedStorage, ResourcePrefix: resource.Resource}, nil
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}
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func newRBACAuthorizer(config *master.Config) authorizer.Authorizer {
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optsGetter := &testRESTOptionsGetter{config}
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roleRegistry := role.AuthorizerAdapter{Registry: role.NewRegistry(rolestore.NewREST(optsGetter))}
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roleBindingRegistry := rolebinding.AuthorizerAdapter{Registry: rolebinding.NewRegistry(rolebindingstore.NewREST(optsGetter))}
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clusterRoleRegistry := clusterrole.AuthorizerAdapter{Registry: clusterrole.NewRegistry(clusterrolestore.NewREST(optsGetter))}
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clusterRoleBindingRegistry := clusterrolebinding.AuthorizerAdapter{Registry: clusterrolebinding.NewRegistry(clusterrolebindingstore.NewREST(optsGetter))}
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return rbac.New(roleRegistry, roleBindingRegistry, clusterRoleRegistry, clusterRoleBindingRegistry)
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}
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// bootstrapRoles are a set of RBAC roles which will be populated before the test.
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type bootstrapRoles struct {
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roles []rbacapi.Role
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roleBindings []rbacapi.RoleBinding
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clusterRoles []rbacapi.ClusterRole
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clusterRoleBindings []rbacapi.ClusterRoleBinding
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}
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// bootstrap uses the provided client to create the bootstrap roles and role bindings.
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//
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// client should be authenticated as the RBAC super user.
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func (b bootstrapRoles) bootstrap(client clientset.Interface) error {
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for _, r := range b.clusterRoles {
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_, err := client.Rbac().ClusterRoles().Create(&r)
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if err != nil {
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return fmt.Errorf("failed to make request: %v", err)
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}
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}
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for _, r := range b.roles {
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_, err := client.Rbac().Roles(r.Namespace).Create(&r)
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if err != nil {
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return fmt.Errorf("failed to make request: %v", err)
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}
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}
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for _, r := range b.clusterRoleBindings {
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_, err := client.Rbac().ClusterRoleBindings().Create(&r)
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if err != nil {
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return fmt.Errorf("failed to make request: %v", err)
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}
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}
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for _, r := range b.roleBindings {
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_, err := client.Rbac().RoleBindings(r.Namespace).Create(&r)
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if err != nil {
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return fmt.Errorf("failed to make request: %v", err)
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}
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}
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return nil
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}
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// request is a test case which can.
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type request struct {
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// The username attempting to send the request.
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user string
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// Resource metadata
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verb string
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apiGroup string
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resource string
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namespace string
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name string
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// The actual resource.
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body string
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// The expected return status of this request.
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expectedStatus int
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}
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func (r request) String() string {
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return fmt.Sprintf("%s %s %s", r.user, r.verb, r.resource)
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}
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type statusCode int
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func (s statusCode) String() string {
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return fmt.Sprintf("%d %s", int(s), http.StatusText(int(s)))
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}
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// Declare a set of raw objects to use.
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var (
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writeJobsRoleBinding = `
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{
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"apiVersion": "rbac.authorization.k8s.io/v1alpha1",
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"kind": "RoleBinding",
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"metadata": {
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"name": "pi"%s
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},
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"roleRef": {
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"apiGroup": "rbac.authorization.k8s.io",
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"kind": "ClusterRole",
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"name": "write-jobs"
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},
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"subjects": [{
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"apiVersion": "rbac/v1alpha1",
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"kind": "User",
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"name": "admin"
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}]
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}`
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aJob = `
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{
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"apiVersion": "batch/v1",
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"kind": "Job",
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"metadata": {
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"name": "pi"%s
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},
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"spec": {
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"template": {
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"metadata": {
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"name": "a",
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"labels": {
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"name": "pijob"
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}
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},
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"spec": {
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"containers": [
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{
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"name": "pi",
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"image": "perl",
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"command": [
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"perl",
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"-Mbignum=bpi",
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"-wle",
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"print bpi(2000)"
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]
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}
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],
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"restartPolicy": "Never"
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}
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}
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}
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}
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`
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podNamespace = `
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{
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"apiVersion": "` + api.Registry.GroupOrDie(api.GroupName).GroupVersion.String() + `",
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"kind": "Namespace",
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"metadata": {
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"name": "pod-namespace"%s
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}
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}
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`
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jobNamespace = `
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{
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"apiVersion": "` + api.Registry.GroupOrDie(api.GroupName).GroupVersion.String() + `",
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"kind": "Namespace",
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"metadata": {
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"name": "job-namespace"%s
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}
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}
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`
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forbiddenNamespace = `
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{
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"apiVersion": "` + api.Registry.GroupOrDie(api.GroupName).GroupVersion.String() + `",
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"kind": "Namespace",
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"metadata": {
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"name": "forbidden-namespace"%s
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}
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}
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`
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)
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// Declare some PolicyRules beforehand.
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var (
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ruleAllowAll = rbacapi.NewRule("*").Groups("*").Resources("*").RuleOrDie()
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ruleReadPods = rbacapi.NewRule("list", "get", "watch").Groups("").Resources("pods").RuleOrDie()
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ruleWriteJobs = rbacapi.NewRule("*").Groups("batch").Resources("*").RuleOrDie()
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)
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func TestRBAC(t *testing.T) {
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superUser := "admin/system:masters"
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tests := []struct {
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bootstrapRoles bootstrapRoles
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requests []request
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}{
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{
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bootstrapRoles: bootstrapRoles{
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clusterRoles: []rbacapi.ClusterRole{
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{
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ObjectMeta: api.ObjectMeta{Name: "allow-all"},
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Rules: []rbacapi.PolicyRule{ruleAllowAll},
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},
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{
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ObjectMeta: api.ObjectMeta{Name: "read-pods"},
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Rules: []rbacapi.PolicyRule{ruleReadPods},
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},
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},
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clusterRoleBindings: []rbacapi.ClusterRoleBinding{
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{
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ObjectMeta: api.ObjectMeta{Name: "read-pods"},
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Subjects: []rbacapi.Subject{
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{Kind: "User", Name: "pod-reader"},
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},
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RoleRef: rbacapi.RoleRef{Kind: "ClusterRole", Name: "read-pods"},
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},
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},
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},
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requests: []request{
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// Create the namespace used later in the test
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{superUser, "POST", "", "namespaces", "", "", podNamespace, http.StatusCreated},
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{superUser, "GET", "", "pods", "", "", "", http.StatusOK},
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{superUser, "GET", "", "pods", "pod-namespace", "a", "", http.StatusNotFound},
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{superUser, "POST", "", "pods", "pod-namespace", "", aPod, http.StatusCreated},
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{superUser, "GET", "", "pods", "pod-namespace", "a", "", http.StatusOK},
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{"bob", "GET", "", "pods", "", "", "", http.StatusForbidden},
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{"bob", "GET", "", "pods", "pod-namespace", "a", "", http.StatusForbidden},
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{"pod-reader", "GET", "", "pods", "", "", "", http.StatusOK},
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{"pod-reader", "POST", "", "pods", "pod-namespace", "", aPod, http.StatusForbidden},
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},
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},
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{
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bootstrapRoles: bootstrapRoles{
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clusterRoles: []rbacapi.ClusterRole{
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{
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ObjectMeta: api.ObjectMeta{Name: "write-jobs"},
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Rules: []rbacapi.PolicyRule{ruleWriteJobs},
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},
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{
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ObjectMeta: api.ObjectMeta{Name: "create-rolebindings"},
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Rules: []rbacapi.PolicyRule{
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rbacapi.NewRule("create").Groups("rbac.authorization.k8s.io").Resources("rolebindings").RuleOrDie(),
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},
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},
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{
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ObjectMeta: api.ObjectMeta{Name: "bind-any-clusterrole"},
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Rules: []rbacapi.PolicyRule{
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rbacapi.NewRule("bind").Groups("rbac.authorization.k8s.io").Resources("clusterroles").RuleOrDie(),
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},
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},
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},
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clusterRoleBindings: []rbacapi.ClusterRoleBinding{
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{
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ObjectMeta: api.ObjectMeta{Name: "write-jobs"},
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Subjects: []rbacapi.Subject{{Kind: "User", Name: "job-writer"}},
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RoleRef: rbacapi.RoleRef{Kind: "ClusterRole", Name: "write-jobs"},
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},
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{
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ObjectMeta: api.ObjectMeta{Name: "create-rolebindings"},
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Subjects: []rbacapi.Subject{
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{Kind: "User", Name: "job-writer"},
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{Kind: "User", Name: "nonescalating-rolebinding-writer"},
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{Kind: "User", Name: "any-rolebinding-writer"},
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},
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RoleRef: rbacapi.RoleRef{Kind: "ClusterRole", Name: "create-rolebindings"},
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},
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{
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ObjectMeta: api.ObjectMeta{Name: "bind-any-clusterrole"},
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Subjects: []rbacapi.Subject{{Kind: "User", Name: "any-rolebinding-writer"}},
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RoleRef: rbacapi.RoleRef{Kind: "ClusterRole", Name: "bind-any-clusterrole"},
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},
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},
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roleBindings: []rbacapi.RoleBinding{
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{
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ObjectMeta: api.ObjectMeta{Name: "write-jobs", Namespace: "job-namespace"},
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Subjects: []rbacapi.Subject{{Kind: "User", Name: "job-writer-namespace"}},
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RoleRef: rbacapi.RoleRef{Kind: "ClusterRole", Name: "write-jobs"},
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},
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{
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ObjectMeta: api.ObjectMeta{Name: "create-rolebindings", Namespace: "job-namespace"},
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Subjects: []rbacapi.Subject{{Kind: "User", Name: "job-writer-namespace"}},
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RoleRef: rbacapi.RoleRef{Kind: "ClusterRole", Name: "create-rolebindings"},
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},
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},
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},
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requests: []request{
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// Create the namespace used later in the test
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{superUser, "POST", "", "namespaces", "", "", jobNamespace, http.StatusCreated},
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{superUser, "POST", "", "namespaces", "", "", forbiddenNamespace, http.StatusCreated},
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|
|
{"user-with-no-permissions", "POST", "batch", "jobs", "job-namespace", "", aJob, http.StatusForbidden},
|
||
|
|
{"user-with-no-permissions", "GET", "batch", "jobs", "job-namespace", "pi", "", http.StatusForbidden},
|
||
|
|
|
||
|
|
// job-writer-namespace cannot write to the "forbidden-namespace"
|
||
|
|
{"job-writer-namespace", "GET", "batch", "jobs", "forbidden-namespace", "", "", http.StatusForbidden},
|
||
|
|
{"job-writer-namespace", "GET", "batch", "jobs", "forbidden-namespace", "pi", "", http.StatusForbidden},
|
||
|
|
{"job-writer-namespace", "POST", "batch", "jobs", "forbidden-namespace", "", aJob, http.StatusForbidden},
|
||
|
|
{"job-writer-namespace", "GET", "batch", "jobs", "forbidden-namespace", "pi", "", http.StatusForbidden},
|
||
|
|
|
||
|
|
// job-writer can write to any namespace
|
||
|
|
{"job-writer", "GET", "batch", "jobs", "forbidden-namespace", "", "", http.StatusOK},
|
||
|
|
{"job-writer", "GET", "batch", "jobs", "forbidden-namespace", "pi", "", http.StatusNotFound},
|
||
|
|
{"job-writer", "POST", "batch", "jobs", "forbidden-namespace", "", aJob, http.StatusCreated},
|
||
|
|
{"job-writer", "GET", "batch", "jobs", "forbidden-namespace", "pi", "", http.StatusOK},
|
||
|
|
|
||
|
|
{"job-writer-namespace", "GET", "batch", "jobs", "job-namespace", "", "", http.StatusOK},
|
||
|
|
{"job-writer-namespace", "GET", "batch", "jobs", "job-namespace", "pi", "", http.StatusNotFound},
|
||
|
|
{"job-writer-namespace", "POST", "batch", "jobs", "job-namespace", "", aJob, http.StatusCreated},
|
||
|
|
{"job-writer-namespace", "GET", "batch", "jobs", "job-namespace", "pi", "", http.StatusOK},
|
||
|
|
|
||
|
|
// cannot bind role anywhere
|
||
|
|
{"user-with-no-permissions", "POST", "rbac.authorization.k8s.io", "rolebindings", "job-namespace", "", writeJobsRoleBinding, http.StatusForbidden},
|
||
|
|
// can only bind role in namespace where they have covering permissions
|
||
|
|
{"job-writer-namespace", "POST", "rbac.authorization.k8s.io", "rolebindings", "forbidden-namespace", "", writeJobsRoleBinding, http.StatusForbidden},
|
||
|
|
{"job-writer-namespace", "POST", "rbac.authorization.k8s.io", "rolebindings", "job-namespace", "", writeJobsRoleBinding, http.StatusCreated},
|
||
|
|
{superUser, "DELETE", "rbac.authorization.k8s.io", "rolebindings", "job-namespace", "pi", "", http.StatusOK},
|
||
|
|
// can bind role in any namespace where they have covering permissions
|
||
|
|
{"job-writer", "POST", "rbac.authorization.k8s.io", "rolebindings", "forbidden-namespace", "", writeJobsRoleBinding, http.StatusCreated},
|
||
|
|
{superUser, "DELETE", "rbac.authorization.k8s.io", "rolebindings", "forbidden-namespace", "pi", "", http.StatusOK},
|
||
|
|
// cannot bind role because they don't have covering permissions
|
||
|
|
{"nonescalating-rolebinding-writer", "POST", "rbac.authorization.k8s.io", "rolebindings", "job-namespace", "", writeJobsRoleBinding, http.StatusForbidden},
|
||
|
|
// can bind role because they have explicit bind permission
|
||
|
|
{"any-rolebinding-writer", "POST", "rbac.authorization.k8s.io", "rolebindings", "job-namespace", "", writeJobsRoleBinding, http.StatusCreated},
|
||
|
|
{superUser, "DELETE", "rbac.authorization.k8s.io", "rolebindings", "job-namespace", "pi", "", http.StatusOK},
|
||
|
|
},
|
||
|
|
},
|
||
|
|
}
|
||
|
|
|
||
|
|
for i, tc := range tests {
|
||
|
|
// Create an API Server.
|
||
|
|
masterConfig := framework.NewIntegrationTestMasterConfig()
|
||
|
|
masterConfig.GenericConfig.Authorizer = newRBACAuthorizer(masterConfig)
|
||
|
|
masterConfig.GenericConfig.Authenticator = newFakeAuthenticator()
|
||
|
|
_, s := framework.RunAMaster(masterConfig)
|
||
|
|
defer s.Close()
|
||
|
|
|
||
|
|
clientConfig := &restclient.Config{Host: s.URL, ContentConfig: restclient.ContentConfig{NegotiatedSerializer: api.Codecs}}
|
||
|
|
|
||
|
|
// Bootstrap the API Server with the test case's initial roles.
|
||
|
|
if err := tc.bootstrapRoles.bootstrap(clientsetForUser(superUser, clientConfig)); err != nil {
|
||
|
|
t.Errorf("case %d: failed to apply initial roles: %v", i, err)
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
previousResourceVersion := make(map[string]float64)
|
||
|
|
|
||
|
|
for j, r := range tc.requests {
|
||
|
|
testGroup, ok := testapi.Groups[r.apiGroup]
|
||
|
|
if !ok {
|
||
|
|
t.Errorf("case %d %d: unknown api group %q, %s", i, j, r.apiGroup, r)
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
path := testGroup.ResourcePath(r.resource, r.namespace, r.name)
|
||
|
|
|
||
|
|
var body io.Reader
|
||
|
|
if r.body != "" {
|
||
|
|
sub := ""
|
||
|
|
if r.verb == "PUT" {
|
||
|
|
// For update operations, insert previous resource version
|
||
|
|
if resVersion := previousResourceVersion[getPreviousResourceVersionKey(path, "")]; resVersion != 0 {
|
||
|
|
sub += fmt.Sprintf(",\"resourceVersion\": \"%v\"", resVersion)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// For any creation requests, add the namespace to the object meta.
|
||
|
|
if r.verb == "POST" || r.verb == "PUT" {
|
||
|
|
if r.namespace != "" {
|
||
|
|
sub += fmt.Sprintf(",\"namespace\": %q", r.namespace)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
body = strings.NewReader(fmt.Sprintf(r.body, sub))
|
||
|
|
}
|
||
|
|
|
||
|
|
req, err := http.NewRequest(r.verb, s.URL+path, body)
|
||
|
|
if err != nil {
|
||
|
|
t.Fatalf("failed to create request: %v", err)
|
||
|
|
}
|
||
|
|
|
||
|
|
func() {
|
||
|
|
reqDump, err := httputil.DumpRequest(req, true)
|
||
|
|
if err != nil {
|
||
|
|
t.Fatalf("failed to dump request: %v", err)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
resp, err := clientForUser(r.user).Do(req)
|
||
|
|
if err != nil {
|
||
|
|
t.Errorf("case %d, req %d: failed to make request: %v", i, j, err)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
defer resp.Body.Close()
|
||
|
|
|
||
|
|
respDump, err := httputil.DumpResponse(resp, true)
|
||
|
|
if err != nil {
|
||
|
|
t.Fatalf("failed to dump response: %v", err)
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
if resp.StatusCode != r.expectedStatus {
|
||
|
|
// When debugging is on, dump the entire request and response. Very helpful for
|
||
|
|
// debugging malformed test cases.
|
||
|
|
//
|
||
|
|
// To turn on debugging, use the '-args' flag.
|
||
|
|
//
|
||
|
|
// go test -v -tags integration -run RBAC -args -v 10
|
||
|
|
//
|
||
|
|
glog.V(8).Infof("case %d, req %d: %s\n%s\n", i, j, reqDump, respDump)
|
||
|
|
t.Errorf("case %d, req %d: %s expected %q got %q", i, j, r, statusCode(r.expectedStatus), statusCode(resp.StatusCode))
|
||
|
|
}
|
||
|
|
|
||
|
|
b, _ := ioutil.ReadAll(resp.Body)
|
||
|
|
|
||
|
|
if r.verb == "POST" && (resp.StatusCode/100) == 2 {
|
||
|
|
// For successful create operations, extract resourceVersion
|
||
|
|
id, currentResourceVersion, err := parseResourceVersion(b)
|
||
|
|
if err == nil {
|
||
|
|
key := getPreviousResourceVersionKey(path, id)
|
||
|
|
previousResourceVersion[key] = currentResourceVersion
|
||
|
|
} else {
|
||
|
|
t.Logf("error in trying to extract resource version: %s", err)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}()
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestBootstrapping(t *testing.T) {
|
||
|
|
superUser := "admin/system:masters"
|
||
|
|
|
||
|
|
masterConfig := framework.NewIntegrationTestMasterConfig()
|
||
|
|
masterConfig.GenericConfig.Authorizer = newRBACAuthorizer(masterConfig)
|
||
|
|
masterConfig.GenericConfig.Authenticator = newFakeAuthenticator()
|
||
|
|
_, s := framework.RunAMaster(masterConfig)
|
||
|
|
defer s.Close()
|
||
|
|
|
||
|
|
clientset := clientset.NewForConfigOrDie(&restclient.Config{BearerToken: superUser, Host: s.URL, ContentConfig: restclient.ContentConfig{GroupVersion: &api.Registry.GroupOrDie(api.GroupName).GroupVersion}})
|
||
|
|
|
||
|
|
watcher, err := clientset.Rbac().ClusterRoles().Watch(api.ListOptions{ResourceVersion: "0"})
|
||
|
|
if err != nil {
|
||
|
|
t.Fatalf("unexpected error: %v", err)
|
||
|
|
}
|
||
|
|
_, err = watch.Until(30*time.Second, watcher, func(event watch.Event) (bool, error) {
|
||
|
|
if event.Type != watch.Added {
|
||
|
|
return false, nil
|
||
|
|
}
|
||
|
|
return true, nil
|
||
|
|
})
|
||
|
|
if err != nil {
|
||
|
|
t.Fatalf("unexpected error: %v", err)
|
||
|
|
}
|
||
|
|
|
||
|
|
clusterRoles, err := clientset.Rbac().ClusterRoles().List(api.ListOptions{})
|
||
|
|
if err != nil {
|
||
|
|
t.Fatalf("unexpected error: %v", err)
|
||
|
|
}
|
||
|
|
if len(clusterRoles.Items) == 0 {
|
||
|
|
t.Fatalf("missing cluster roles")
|
||
|
|
}
|
||
|
|
|
||
|
|
for _, clusterRole := range clusterRoles.Items {
|
||
|
|
if clusterRole.Name == "cluster-admin" {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
t.Errorf("missing cluster-admin: %v", clusterRoles)
|
||
|
|
|
||
|
|
healthBytes, err := clientset.Discovery().RESTClient().Get().AbsPath("/healthz/poststarthooks/rbac/bootstrap-roles").DoRaw()
|
||
|
|
if err != nil {
|
||
|
|
t.Error(err)
|
||
|
|
}
|
||
|
|
t.Errorf("expected %v, got %v", "asdf", string(healthBytes))
|
||
|
|
}
|