DockerCLI/cli/command/stack/kubernetes/list.go

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package kubernetes
import (
"sort"
"github.com/docker/cli/cli/command/formatter"
"github.com/docker/cli/cli/command/stack/options"
"github.com/docker/cli/cli/compose/loader"
composetypes "github.com/docker/cli/cli/compose/types"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"vbom.ml/util/sortorder"
)
// RunList is the kubernetes implementation of docker stack ls
func RunList(dockerCli *KubeCli, opts options.List) error {
stacks, err := getStacks(dockerCli)
if err != nil {
return err
}
format := opts.Format
if len(format) == 0 {
format = formatter.TableFormatKey
}
stackCtx := formatter.Context{
Output: dockerCli.Out(),
Format: formatter.NewStackFormat(format),
}
sort.Sort(byName(stacks))
return formatter.StackWrite(stackCtx, stacks)
}
type byName []*formatter.Stack
func (n byName) Len() int { return len(n) }
func (n byName) Swap(i, j int) { n[i], n[j] = n[j], n[i] }
func (n byName) Less(i, j int) bool { return sortorder.NaturalLess(n[i].Name, n[j].Name) }
func getStacks(kubeCli *KubeCli) ([]*formatter.Stack, error) {
stackSvc, err := kubeCli.stacks()
if err != nil {
return nil, err
}
stacks, err := stackSvc.List(metav1.ListOptions{})
if err != nil {
return nil, err
}
var formattedStacks []*formatter.Stack
for _, stack := range stacks.Items {
cfg, err := loadStack(stack.Spec.ComposeFile)
if err != nil {
return nil, err
}
formattedStacks = append(formattedStacks, &formatter.Stack{
Name: stack.Name,
Services: len(getServices(cfg)),
})
}
return formattedStacks, nil
}
func loadStack(composefile string) (*composetypes.Config, error) {
parsed, err := loader.ParseYAML([]byte(composefile))
if err != nil {
return nil, err
}
return loader.Load(composetypes.ConfigDetails{
ConfigFiles: []composetypes.ConfigFile{
{
Config: parsed,
},
},
})
}