DockerCLI/cli/command/context/list.go

89 lines
2.5 KiB
Go
Raw Normal View History

package context
import (
"fmt"
"sort"
"github.com/docker/cli/cli"
"github.com/docker/cli/cli/command"
"github.com/docker/cli/cli/command/formatter"
"github.com/docker/cli/cli/context/docker"
kubecontext "github.com/docker/cli/cli/context/kubernetes"
"github.com/spf13/cobra"
"vbom.ml/util/sortorder"
)
type listOptions struct {
format string
quiet bool
}
func newListCommand(dockerCli command.Cli) *cobra.Command {
opts := &listOptions{}
cmd := &cobra.Command{
Use: "ls [OPTIONS]",
Aliases: []string{"list"},
Short: "List contexts",
Args: cli.NoArgs,
RunE: func(cmd *cobra.Command, args []string) error {
return runList(dockerCli, opts)
},
}
flags := cmd.Flags()
flags.StringVar(&opts.format, "format", "", "Pretty-print contexts using a Go template")
flags.BoolVarP(&opts.quiet, "quiet", "q", false, "Only show context names")
return cmd
}
func runList(dockerCli command.Cli, opts *listOptions) error {
if opts.format == "" {
opts.format = formatter.TableFormatKey
}
curContext := dockerCli.CurrentContext()
contextMap, err := dockerCli.ContextStore().ListContexts()
if err != nil {
return err
}
var contexts []*formatter.ClientContext
for _, rawMeta := range contextMap {
meta, err := command.GetDockerContext(rawMeta)
if err != nil {
return err
}
dockerEndpoint, err := docker.EndpointFromContext(rawMeta)
if err != nil {
return err
}
kubernetesEndpoint := kubecontext.EndpointFromContext(rawMeta)
kubEndpointText := ""
if kubernetesEndpoint != nil {
kubEndpointText = fmt.Sprintf("%s (%s)", kubernetesEndpoint.Host, kubernetesEndpoint.DefaultNamespace)
}
if rawMeta.Name == command.DefaultContextName {
meta.Description = "Current DOCKER_HOST based configuration"
}
desc := formatter.ClientContext{
Name: rawMeta.Name,
Current: rawMeta.Name == curContext,
Description: meta.Description,
StackOrchestrator: string(meta.StackOrchestrator),
DockerEndpoint: dockerEndpoint.Host,
KubernetesEndpoint: kubEndpointText,
}
contexts = append(contexts, &desc)
}
sort.Slice(contexts, func(i, j int) bool {
return sortorder.NaturalLess(contexts[i].Name, contexts[j].Name)
})
return format(dockerCli, opts, contexts)
}
func format(dockerCli command.Cli, opts *listOptions, contexts []*formatter.ClientContext) error {
contextCtx := formatter.Context{
Output: dockerCli.Out(),
Format: formatter.NewClientContextFormat(opts.format, opts.quiet),
}
return formatter.ClientContextWrite(contextCtx, contexts)
}