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delete_namespace.go
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delete_namespace.go
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package cmd
import (
"fmt"
"io"
"sort"
"strings"
"github.com/jenkins-x/jx/pkg/jx/cmd/templates"
"github.com/jenkins-x/jx/pkg/log"
"github.com/jenkins-x/jx/pkg/util"
"github.com/spf13/cobra"
"gopkg.in/AlecAivazis/survey.v1"
"gopkg.in/AlecAivazis/survey.v1/terminal"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
// DeleteNamespaceOptions are the flags for delete commands
type DeleteNamespaceOptions struct {
CommonOptions
SelectAll bool
SelectFilter string
Confirm bool
}
var (
deleteNamespaceLong = templates.LongDesc(`
Deletes one or more namespaces
`)
deleteNamespaceExample = templates.Examples(`
# Delete the named namespace
jx delete namespace cheese
# Delete the namespaces matching the given filter
jx delete namespace -f foo -a
`)
)
// NewCmdDeleteNamespace creates a command object
// retrieves one or more resources from a server.
func NewCmdDeleteNamespace(f Factory, in terminal.FileReader, out terminal.FileWriter, errOut io.Writer) *cobra.Command {
options := &DeleteNamespaceOptions{
CommonOptions: CommonOptions{
Factory: f,
In: in,
Out: out,
Err: errOut,
},
}
cmd := &cobra.Command{
Use: "namespace",
Short: "Deletes one or more namespaces and their associated resources (Environments, Jenkins etc)",
Long: deleteNamespaceLong,
Example: deleteNamespaceExample,
Aliases: []string{"namespaces", "ns"},
Run: func(cmd *cobra.Command, args []string) {
options.Cmd = cmd
options.Args = args
err := options.Run()
CheckErr(err)
},
}
options.addCommonFlags(cmd)
cmd.Flags().BoolVarP(&options.SelectAll, "all", "a", false, "Should we default to selecting all the matched namespaces for deletion")
cmd.Flags().StringVarP(&options.SelectFilter, "filter", "f", "", "Filters the list of namespaces you can pick from")
cmd.Flags().BoolVarP(&options.Confirm, "yes", "y", false, "Confirms we should uninstall this installation")
return cmd
}
// Run implements this command
func (o *DeleteNamespaceOptions) Run() error {
surveyOpts := survey.WithStdio(o.In, o.Out, o.Err)
kubeClient, _, err := o.KubeClient()
if err != nil {
return err
}
namespaceInterface := kubeClient.CoreV1().Namespaces()
nsList, err := namespaceInterface.List(metav1.ListOptions{})
if err != nil {
return err
}
namespaceNames := []string{}
for _, namespace := range nsList.Items {
namespaceNames = append(namespaceNames, namespace.Name)
}
sort.Strings(namespaceNames)
names := o.Args
if len(names) == 0 {
if o.BatchMode {
return fmt.Errorf("Missing namespace name argument")
}
names, err = util.SelectNamesWithFilter(namespaceNames, "Which namespaces do you want to delete: ", o.SelectAll, o.SelectFilter, "", o.In, o.Out, o.Err)
if err != nil {
return err
}
}
if o.BatchMode {
if !o.Confirm {
return fmt.Errorf("In batch mode you must specify the '-y' flag to confirm")
}
} else {
log.Warnf("You are about to delete the following namespaces '%s'. This operation CANNOT be undone!",
strings.Join(names, ","))
flag := false
prompt := &survey.Confirm{
Message: "Are you sure you want to delete all these namespaces?",
Default: false,
}
err = survey.AskOne(prompt, &flag, nil, surveyOpts)
if err != nil {
return err
}
if !flag {
return nil
}
}
for _, name := range names {
log.Infof("Deleting namespace: %s\n", util.ColorInfo(name))
err = namespaceInterface.Delete(name, nil)
if err != nil {
log.Warnf("Failed to delete namespace %s: %s\n", name, err)
}
}
return nil
}