Merge pull request #62945 from nak3/all-resource-create-role

Automatic merge from submit-queue (batch tested with PRs 67026, 62945, 66917). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

`kubectl create {clusterrole,role}`'s `--resources` flag support asterisk to specify all resources

**What this PR does / why we need it**:

Currently `kubectl create (cluster)role`'s `--resources` flag does not support asterisk to specify all resources.

```
# kubectl create clusterrole superrole --verb=get  --resource=*
the server doesn't have a resource type "*"
```

As an user, we create a role with `--resources=*` sometimes, so this PR supports it.

Fixes https://github.com/kubernetes/kubernetes/issues/62989

**Special notes for your reviewer**:

- This patch does not support `--resource=*` for `SpecialVerbs` - e.g `kubectl create role foo --verb=impersonate  --resource=*`, because current code also does not support `kubectl create role foo --verb=impersonate  --resource=users,pods`

**Release note**:

```release-note
`kubectl create {clusterrole,role}`'s `--resources` flag supports asterisk to specify all resources.
```

pkg/kubectl/cmd/create/create_role.go

@@ -204,6 +204,11 @@ func (o *CreateRoleOptions) Complete(f cmdutil.Factory, cmd *cobra.Command, args
 		}
 		resource.Resource = parts[0]
 
+		if resource.Resource == "*" && len(parts) == 1 && len(sections) == 1 {
+			o.Resources = []ResourceOptions{*resource}
+			break
+		}
+
 		o.Resources = append(o.Resources, *resource)
 	}
 
@@ -279,6 +284,9 @@ func (o *CreateRoleOptions) validateResource() error {
 		if len(r.Resource) == 0 {
 			return fmt.Errorf("resource must be specified if apiGroup/subresource specified")
 		}
+		if r.Resource == "*" {
+			return nil
+		}
 
 		resource := schema.GroupVersionResource{Resource: r.Resource, Group: r.Group}
 		groupVersionResource, err := o.Mapper.ResourceFor(schema.GroupVersionResource{Resource: r.Resource, Group: r.Group})

pkg/kubectl/cmd/create/create_role_test.go

@@ -360,24 +360,26 @@ func TestComplete(t *testing.T) {
 	tf.Client = &fake.RESTClient{}
 	tf.ClientConfigVal = defaultClientConfig()
 
-	cmd := NewCmdCreateRole(tf, genericclioptions.NewTestIOStreamsDiscard())
-	cmd.Flags().Set("resource", "pods,deployments.extensions")
+	defaultTestResources := "pods,deployments.extensions"
 
 	tests := map[string]struct {
 		params      []string
+		resources   string
 		roleOptions *CreateRoleOptions
 		expected    *CreateRoleOptions
 		expectErr   bool
 	}{
 		"test-missing-name": {
-			params: []string{},
+			params:    []string{},
+			resources: defaultTestResources,
 			roleOptions: &CreateRoleOptions{
 				PrintFlags: genericclioptions.NewPrintFlags("created").WithTypeSetter(scheme.Scheme),
 			},
 			expectErr: true,
 		},
 		"test-duplicate-verbs": {
-			params: []string{roleName},
+			params:    []string{roleName},
+			resources: defaultTestResources,
 			roleOptions: &CreateRoleOptions{
 				PrintFlags: genericclioptions.NewPrintFlags("created").WithTypeSetter(scheme.Scheme),
 				Name:       roleName,
@@ -410,7 +412,8 @@ func TestComplete(t *testing.T) {
 			expectErr: false,
 		},
 		"test-verball": {
-			params: []string{roleName},
+			params:    []string{roleName},
+			resources: defaultTestResources,
 			roleOptions: &CreateRoleOptions{
 				PrintFlags: genericclioptions.NewPrintFlags("created").WithTypeSetter(scheme.Scheme),
 				Name:       roleName,
@@ -438,8 +441,151 @@ func TestComplete(t *testing.T) {
 			},
 			expectErr: false,
 		},
+		"test-allresource": {
+			params:    []string{roleName},
+			resources: "*,pods",
+			roleOptions: &CreateRoleOptions{
+				PrintFlags: genericclioptions.NewPrintFlags("created"),
+				Name:       roleName,
+				Verbs:      []string{"*"},
+			},
+			expected: &CreateRoleOptions{
+				Name:  roleName,
+				Verbs: []string{"*"},
+				Resources: []ResourceOptions{
+					{
+						Resource: "*",
+					},
+				},
+				ResourceNames: []string{},
+			},
+			expectErr: false,
+		},
+		"test-allresource-subresource": {
+			params:    []string{roleName},
+			resources: "*/scale,pods",
+			roleOptions: &CreateRoleOptions{
+				PrintFlags: genericclioptions.NewPrintFlags("created"),
+				Name:       roleName,
+				Verbs:      []string{"*"},
+			},
+			expected: &CreateRoleOptions{
+				Name:  roleName,
+				Verbs: []string{"*"},
+				Resources: []ResourceOptions{
+					{
+						Resource:    "*",
+						SubResource: "scale",
+					},
+					{
+						Resource: "pods",
+					},
+				},
+				ResourceNames: []string{},
+			},
+			expectErr: false,
+		},
+		"test-allresrouce-allgroup": {
+			params:    []string{roleName},
+			resources: "*.*,pods",
+			roleOptions: &CreateRoleOptions{
+				PrintFlags: genericclioptions.NewPrintFlags("created"),
+				Name:       roleName,
+				Verbs:      []string{"*"},
+			},
+			expected: &CreateRoleOptions{
+				Name:  roleName,
+				Verbs: []string{"*"},
+				Resources: []ResourceOptions{
+					{
+						Resource: "*",
+						Group:    "*",
+					},
+					{
+						Resource: "pods",
+					},
+				},
+				ResourceNames: []string{},
+			},
+			expectErr: false,
+		},
+		"test-allresource-allgroup-subresource": {
+			params:    []string{roleName},
+			resources: "*.*/scale,pods",
+			roleOptions: &CreateRoleOptions{
+				PrintFlags: genericclioptions.NewPrintFlags("created"),
+				Name:       roleName,
+				Verbs:      []string{"*"},
+			},
+			expected: &CreateRoleOptions{
+				Name:  roleName,
+				Verbs: []string{"*"},
+				Resources: []ResourceOptions{
+					{
+						Resource:    "*",
+						Group:       "*",
+						SubResource: "scale",
+					},
+					{
+						Resource: "pods",
+					},
+				},
+				ResourceNames: []string{},
+			},
+			expectErr: false,
+		},
+		"test-allresource-specificgroup": {
+			params:    []string{roleName},
+			resources: "*.extensions,pods",
+			roleOptions: &CreateRoleOptions{
+				PrintFlags: genericclioptions.NewPrintFlags("created"),
+				Name:       roleName,
+				Verbs:      []string{"*"},
+			},
+			expected: &CreateRoleOptions{
+				Name:  roleName,
+				Verbs: []string{"*"},
+				Resources: []ResourceOptions{
+					{
+						Resource: "*",
+						Group:    "extensions",
+					},
+					{
+						Resource: "pods",
+					},
+				},
+				ResourceNames: []string{},
+			},
+			expectErr: false,
+		},
+		"test-allresource-specificgroup-subresource": {
+			params:    []string{roleName},
+			resources: "*.extensions/scale,pods",
+			roleOptions: &CreateRoleOptions{
+				PrintFlags: genericclioptions.NewPrintFlags("created"),
+				Name:       roleName,
+				Verbs:      []string{"*"},
+			},
+			expected: &CreateRoleOptions{
+				Name:  roleName,
+				Verbs: []string{"*"},
+				Resources: []ResourceOptions{
+					{
+						Resource:    "*",
+						Group:       "extensions",
+						SubResource: "scale",
+					},
+					{
+						Resource: "pods",
+					},
+				},
+				ResourceNames: []string{},
+			},
+			expectErr: false,
+		},
 		"test-duplicate-resourcenames": {
-			params: []string{roleName},
+			params:    []string{roleName},
+			resources: defaultTestResources,
 			roleOptions: &CreateRoleOptions{
 				PrintFlags:    genericclioptions.NewPrintFlags("created").WithTypeSetter(scheme.Scheme),
 				Name:          roleName,
@@ -464,7 +610,8 @@ func TestComplete(t *testing.T) {
 			expectErr: false,
 		},
 		"test-valid-complete-case": {
-			params: []string{roleName},
+			params:    []string{roleName},
+			resources: defaultTestResources,
 			roleOptions: &CreateRoleOptions{
 				PrintFlags:    genericclioptions.NewPrintFlags("created").WithTypeSetter(scheme.Scheme),
 				Name:          roleName,
@@ -491,6 +638,9 @@ func TestComplete(t *testing.T) {
 	}
 
 	for name, test := range tests {
+		cmd := NewCmdCreateRole(tf, genericclioptions.NewTestIOStreamsDiscard())
+		cmd.Flags().Set("resource", test.resources)
+
 		err := test.roleOptions.Complete(tf, cmd, test.params)
 		if !test.expectErr && err != nil {
 			t.Errorf("%s: unexpected error: %v", name, err)