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delete_context.go
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/
delete_context.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/kube"
"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"
"k8s.io/client-go/tools/clientcmd"
)
var (
delete_context_long = templates.LongDesc(`
Deletes one or more kubernetes contexts.
`)
delete_context_example = templates.Examples(`
# Deletes a context for a cluster that no longer exists
jx delete context something
# Deletes all contexts containing the word cheese
# selecting them all by default
jx delete ctx -a cheese
`)
)
// DeleteContextOptions the options for the create spring command
type DeleteContextOptions struct {
CreateOptions
SelectAll bool
SelectFilter string
}
// NewCmdDeleteContext creates a command object for the "delete repo" command
func NewCmdDeleteContext(f Factory, in terminal.FileReader, out terminal.FileWriter, errOut io.Writer) *cobra.Command {
options := &DeleteContextOptions{
CreateOptions: CreateOptions{
CommonOptions: CommonOptions{
Factory: f,
In: in,
Out: out,
Err: errOut,
},
},
}
cmd := &cobra.Command{
Use: "contexts",
Short: "Deletes one or more kubernetes contexts",
Aliases: []string{"context", "ctx"},
Long: delete_context_long,
Example: delete_context_example,
Run: func(cmd *cobra.Command, args []string) {
options.Cmd = cmd
options.Args = args
err := options.Run()
CheckErr(err)
},
}
//addDeleteFlags(cmd, &options.CreateOptions)
cmd.Flags().BoolVarP(&options.SelectAll, "all", "a", false, "Selects all the matched contexts")
cmd.Flags().StringVarP(&options.SelectFilter, "filter", "f", "", "Filter the list of contexts to those containing this text")
return cmd
}
// Run implements the command
func (o *DeleteContextOptions) Run() error {
surveyOpts := survey.WithStdio(o.In, o.Out, o.Err)
config, po, err := kube.LoadConfig()
if err != nil {
return err
}
if config == nil || config.Contexts == nil || len(config.Contexts) == 0 {
return fmt.Errorf("No kubernetes contexts available! Try create or connect to cluster?")
}
names := []string{}
allNames := []string{}
args := o.Args
for k, _ := range config.Contexts {
allNames = append(allNames, k)
if matchesFilter(k, args) {
names = append(names, k)
}
}
sort.Strings(allNames)
if len(names) == 0 {
if len(args) == 0 {
return fmt.Errorf("Failed to find a context!")
}
return util.InvalidArg(args[1], allNames)
}
selected, err := util.SelectNamesWithFilter(names, "Select the Kubernetes Contexts to delete: ", o.SelectAll, o.SelectFilter, o.In, o.Out, o.Err)
if err != nil {
return err
}
if len(selected) == 0 {
return nil
}
flag := false
prompt := &survey.Confirm{
Message: "Are you sure you want to delete these these Kubernetes Contexts?",
Default: false,
}
err = survey.AskOne(prompt, &flag, nil, surveyOpts)
if err != nil {
return err
}
if !flag {
return nil
}
newConfig := *config
for _, name := range selected {
delete(newConfig.Contexts, name)
}
err = clientcmd.ModifyConfig(po, newConfig, false)
if err != nil {
return fmt.Errorf("Failed to update the kube config %s", err)
}
log.Infof("Deleted kubernetes contexts: %s\n", util.ColorInfo(strings.Join(selected, ", ")))
return nil
}
// matchesFilter returns true if there are no filters or the text contains one of the filters
func matchesFilter(text string, filters []string) bool {
if len(filters) == 0 {
return true
}
for _, f := range filters {
if strings.Contains(text, f) {
return true
}
}
return false
}