github.com/vieux/docker@v0.6.3-0.20161004191708-e097c2a938c7/cli/command/stack/ps.go (about)

     1  // +build experimental
     2  
     3  package stack
     4  
     5  import (
     6  	"fmt"
     7  
     8  	"golang.org/x/net/context"
     9  
    10  	"github.com/docker/docker/api/types"
    11  	"github.com/docker/docker/api/types/swarm"
    12  	"github.com/docker/docker/cli"
    13  	"github.com/docker/docker/cli/command"
    14  	"github.com/docker/docker/cli/command/idresolver"
    15  	"github.com/docker/docker/cli/command/task"
    16  	"github.com/docker/docker/opts"
    17  	"github.com/spf13/cobra"
    18  )
    19  
    20  type psOptions struct {
    21  	all       bool
    22  	filter    opts.FilterOpt
    23  	noTrunc   bool
    24  	namespace string
    25  	noResolve bool
    26  }
    27  
    28  func newPsCommand(dockerCli *command.DockerCli) *cobra.Command {
    29  	opts := psOptions{filter: opts.NewFilterOpt()}
    30  
    31  	cmd := &cobra.Command{
    32  		Use:   "ps [OPTIONS] STACK",
    33  		Short: "List the tasks in the stack",
    34  		Args:  cli.ExactArgs(1),
    35  		RunE: func(cmd *cobra.Command, args []string) error {
    36  			opts.namespace = args[0]
    37  			return runPS(dockerCli, opts)
    38  		},
    39  	}
    40  	flags := cmd.Flags()
    41  	flags.BoolVarP(&opts.all, "all", "a", false, "Display all tasks")
    42  	flags.BoolVar(&opts.noTrunc, "no-trunc", false, "Do not truncate output")
    43  	flags.BoolVar(&opts.noResolve, "no-resolve", false, "Do not map IDs to Names")
    44  	flags.VarP(&opts.filter, "filter", "f", "Filter output based on conditions provided")
    45  
    46  	return cmd
    47  }
    48  
    49  func runPS(dockerCli *command.DockerCli, opts psOptions) error {
    50  	namespace := opts.namespace
    51  	client := dockerCli.Client()
    52  	ctx := context.Background()
    53  
    54  	filter := opts.filter.Value()
    55  	filter.Add("label", labelNamespace+"="+opts.namespace)
    56  	if !opts.all && !filter.Include("desired-state") {
    57  		filter.Add("desired-state", string(swarm.TaskStateRunning))
    58  		filter.Add("desired-state", string(swarm.TaskStateAccepted))
    59  	}
    60  
    61  	tasks, err := client.TaskList(ctx, types.TaskListOptions{Filter: filter})
    62  	if err != nil {
    63  		return err
    64  	}
    65  
    66  	if len(tasks) == 0 {
    67  		fmt.Fprintf(dockerCli.Out(), "Nothing found in stack: %s\n", namespace)
    68  		return nil
    69  	}
    70  
    71  	return task.Print(dockerCli, ctx, tasks, idresolver.New(client, opts.noResolve), opts.noTrunc)
    72  }