package node import ( "fmt" "strings" "github.com/docker/docker/api/types" "github.com/docker/docker/api/types/swarm" "github.com/docker/docker/cli" "github.com/docker/docker/cli/command" "github.com/docker/docker/cli/command/idresolver" "github.com/docker/docker/cli/command/task" "github.com/docker/docker/opts" "github.com/spf13/cobra" "golang.org/x/net/context" ) type psOptions struct { nodeIDs []string noResolve bool noTrunc bool filter opts.FilterOpt } func newPsCommand(dockerCli command.Cli) *cobra.Command { opts := psOptions{filter: opts.NewFilterOpt()} cmd := &cobra.Command{ Use: "ps [OPTIONS] [NODE...]", Short: "List tasks running on one or more nodes, defaults to current node", Args: cli.RequiresMinArgs(0), RunE: func(cmd *cobra.Command, args []string) error { opts.nodeIDs = []string{"self"} if len(args) != 0 { opts.nodeIDs = args } return runPs(dockerCli, opts) }, } flags := cmd.Flags() flags.BoolVar(&opts.noTrunc, "no-trunc", false, "Do not truncate output") flags.BoolVar(&opts.noResolve, "no-resolve", false, "Do not map IDs to Names") flags.VarP(&opts.filter, "filter", "f", "Filter output based on conditions provided") return cmd } func runPs(dockerCli command.Cli, opts psOptions) error { client := dockerCli.Client() ctx := context.Background() var ( errs []string tasks []swarm.Task ) for _, nodeID := range opts.nodeIDs { nodeRef, err := Reference(ctx, client, nodeID) if err != nil { errs = append(errs, err.Error()) continue } node, _, err := client.NodeInspectWithRaw(ctx, nodeRef) if err != nil { errs = append(errs, err.Error()) continue } filter := opts.filter.Value() filter.Add("node", node.ID) nodeTasks, err := client.TaskList(ctx, types.TaskListOptions{Filters: filter}) if err != nil { errs = append(errs, err.Error()) continue } tasks = append(tasks, nodeTasks...) } if err := task.Print(dockerCli, ctx, tasks, idresolver.New(client, opts.noResolve), opts.noTrunc); err != nil { errs = append(errs, err.Error()) } if len(errs) > 0 { return fmt.Errorf("%s", strings.Join(errs, "\n")) } return nil }