mirror of https://github.com/docker/cli.git
96 lines
2.2 KiB
Go
96 lines
2.2 KiB
Go
package stack
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import (
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"sort"
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"github.com/docker/cli/cli"
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"github.com/docker/cli/cli/command"
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"github.com/docker/cli/cli/command/formatter"
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"github.com/docker/cli/cli/compose/convert"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/client"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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"golang.org/x/net/context"
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)
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type listOptions struct {
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format string
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}
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func newListCommand(dockerCli *command.DockerCli) *cobra.Command {
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opts := listOptions{}
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cmd := &cobra.Command{
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Use: "ls",
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Aliases: []string{"list"},
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Short: "List stacks",
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Args: cli.NoArgs,
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RunE: func(cmd *cobra.Command, args []string) error {
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return runList(dockerCli, opts)
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},
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}
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flags := cmd.Flags()
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flags.StringVar(&opts.format, "format", "", "Pretty-print stacks using a Go template")
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return cmd
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}
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func runList(dockerCli *command.DockerCli, opts listOptions) error {
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client := dockerCli.Client()
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ctx := context.Background()
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stacks, err := getStacks(ctx, client)
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if err != nil {
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return err
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}
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format := opts.format
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if len(format) == 0 {
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format = formatter.TableFormatKey
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}
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stackCtx := formatter.Context{
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Output: dockerCli.Out(),
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Format: formatter.NewStackFormat(format),
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}
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sort.Sort(byName(stacks))
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return formatter.StackWrite(stackCtx, stacks)
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}
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type byName []*formatter.Stack
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func (n byName) Len() int { return len(n) }
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func (n byName) Swap(i, j int) { n[i], n[j] = n[j], n[i] }
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func (n byName) Less(i, j int) bool { return n[i].Name < n[j].Name }
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func getStacks(ctx context.Context, apiclient client.APIClient) ([]*formatter.Stack, error) {
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services, err := apiclient.ServiceList(
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ctx,
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types.ServiceListOptions{Filters: getAllStacksFilter()})
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if err != nil {
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return nil, err
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}
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m := make(map[string]*formatter.Stack, 0)
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for _, service := range services {
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labels := service.Spec.Labels
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name, ok := labels[convert.LabelNamespace]
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if !ok {
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return nil, errors.Errorf("cannot get label %s for service %s",
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convert.LabelNamespace, service.ID)
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}
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ztack, ok := m[name]
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if !ok {
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m[name] = &formatter.Stack{
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Name: name,
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Services: 1,
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}
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} else {
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ztack.Services++
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}
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}
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var stacks []*formatter.Stack
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for _, stack := range m {
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stacks = append(stacks, stack)
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}
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return stacks, nil
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}
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