github.com/fabiokung/docker@v0.11.2-0.20170222101415-4534dcd49497/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/cli"
    10  	"github.com/docker/docker/cli/command"
    11  	"github.com/docker/docker/cli/command/formatter"
    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  	filter    opts.FilterOpt
    20  	noTrunc   bool
    21  	namespace string
    22  	noResolve bool
    23  	quiet     bool
    24  	format    string
    25  }
    26  
    27  func newPsCommand(dockerCli *command.DockerCli) *cobra.Command {
    28  	opts := psOptions{filter: opts.NewFilterOpt()}
    29  
    30  	cmd := &cobra.Command{
    31  		Use:   "ps [OPTIONS] STACK",
    32  		Short: "List the tasks in the stack",
    33  		Args:  cli.ExactArgs(1),
    34  		RunE: func(cmd *cobra.Command, args []string) error {
    35  			opts.namespace = args[0]
    36  			return runPS(dockerCli, opts)
    37  		},
    38  	}
    39  	flags := cmd.Flags()
    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  	flags.BoolVarP(&opts.quiet, "quiet", "q", false, "Only display task IDs")
    44  	flags.StringVar(&opts.format, "format", "", "Pretty-print tasks using a Go template")
    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 := getStackFilterFromOpt(opts.namespace, opts.filter)
    55  
    56  	tasks, err := client.TaskList(ctx, types.TaskListOptions{Filters: filter})
    57  	if err != nil {
    58  		return err
    59  	}
    60  
    61  	if len(tasks) == 0 {
    62  		fmt.Fprintf(dockerCli.Out(), "Nothing found in stack: %s\n", namespace)
    63  		return nil
    64  	}
    65  
    66  	format := opts.format
    67  	if len(format) == 0 {
    68  		if len(dockerCli.ConfigFile().TasksFormat) > 0 && !opts.quiet {
    69  			format = dockerCli.ConfigFile().TasksFormat
    70  		} else {
    71  			format = formatter.TableFormatKey
    72  		}
    73  	}
    74  
    75  	return task.Print(dockerCli, ctx, tasks, idresolver.New(client, opts.noResolve), !opts.noTrunc, opts.quiet, format)
    76  }