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changemembership.go
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changemembership.go
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package groups
import (
"errors"
"fmt"
"io"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/kubernetes/pkg/kubectl/cmd/templates"
kcmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
"github.com/spf13/cobra"
"github.com/openshift/origin/pkg/cmd/util/clientcmd"
usertypedclient "github.com/openshift/origin/pkg/user/generated/internalclientset/typed/user/internalversion"
)
const (
AddRecommendedName = "add-users"
RemoveRecommendedName = "remove-users"
)
var (
addLong = templates.LongDesc(`
Add users to a group.
This command will append unique users to the list of members for a group.`)
addExample = templates.Examples(`
# Add user1 and user2 to my-group
%[1]s my-group user1 user2`)
removeLong = templates.LongDesc(`
Remove users from a group.
This command will remove users from the list of members for a group.`)
removeExample = templates.Examples(`
# Remove user1 and user2 from my-group
%[1]s my-group user1 user2`)
)
type GroupModificationOptions struct {
GroupClient usertypedclient.GroupInterface
Group string
Users []string
}
func NewCmdAddUsers(name, fullName string, f *clientcmd.Factory, out io.Writer) *cobra.Command {
options := &GroupModificationOptions{}
cmd := &cobra.Command{
Use: name + " GROUP USER [USER ...]",
Short: "Add users to a group",
Long: addLong,
Example: fmt.Sprintf(addExample, fullName),
Run: func(cmd *cobra.Command, args []string) {
if err := options.Complete(f, args); err != nil {
kcmdutil.CheckErr(kcmdutil.UsageErrorf(cmd, err.Error()))
}
kcmdutil.CheckErr(options.AddUsers())
},
}
return cmd
}
func NewCmdRemoveUsers(name, fullName string, f *clientcmd.Factory, out io.Writer) *cobra.Command {
options := &GroupModificationOptions{}
cmd := &cobra.Command{
Use: name + " GROUP USER [USER ...]",
Short: "Remove users from a group",
Long: removeLong,
Example: fmt.Sprintf(removeExample, fullName),
Run: func(cmd *cobra.Command, args []string) {
if err := options.Complete(f, args); err != nil {
kcmdutil.CheckErr(kcmdutil.UsageErrorf(cmd, err.Error()))
}
kcmdutil.CheckErr(options.RemoveUsers())
},
}
return cmd
}
func (o *GroupModificationOptions) Complete(f *clientcmd.Factory, args []string) error {
if len(args) < 2 {
return errors.New("you must specify at least two arguments: GROUP USER [USER ...]")
}
o.Group = args[0]
o.Users = append(o.Users, args[1:]...)
userClient, err := f.OpenshiftInternalUserClient()
if err != nil {
return err
}
o.GroupClient = userClient.User().Groups()
return nil
}
func (o *GroupModificationOptions) AddUsers() error {
group, err := o.GroupClient.Get(o.Group, metav1.GetOptions{})
if err != nil {
return err
}
existingUsers := sets.NewString(group.Users...)
for _, user := range o.Users {
if existingUsers.Has(user) {
continue
}
group.Users = append(group.Users, user)
}
_, err = o.GroupClient.Update(group)
return err
}
func (o *GroupModificationOptions) RemoveUsers() error {
group, err := o.GroupClient.Get(o.Group, metav1.GetOptions{})
if err != nil {
return err
}
toDelete := sets.NewString(o.Users...)
newUsers := []string{}
for _, user := range group.Users {
if toDelete.Has(user) {
continue
}
newUsers = append(newUsers, user)
}
group.Users = newUsers
_, err = o.GroupClient.Update(group)
return err
}