github.com/kim0/docker@v0.6.2-0.20161130212042-4addda3f07e7/cli/command/stack/ps.go (about)

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