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

     1  package service
     2  
     3  import (
     4  	"fmt"
     5  	"strings"
     6  
     7  	"golang.org/x/net/context"
     8  
     9  	"github.com/docker/docker/cli"
    10  	"github.com/docker/docker/cli/command"
    11  	"github.com/docker/docker/cli/command/formatter"
    12  	apiclient "github.com/docker/docker/client"
    13  	"github.com/spf13/cobra"
    14  )
    15  
    16  type inspectOptions struct {
    17  	refs   []string
    18  	format string
    19  	pretty bool
    20  }
    21  
    22  func newInspectCommand(dockerCli *command.DockerCli) *cobra.Command {
    23  	var opts inspectOptions
    24  
    25  	cmd := &cobra.Command{
    26  		Use:   "inspect [OPTIONS] SERVICE [SERVICE...]",
    27  		Short: "Display detailed information on one or more services",
    28  		Args:  cli.RequiresMinArgs(1),
    29  		RunE: func(cmd *cobra.Command, args []string) error {
    30  			opts.refs = args
    31  
    32  			if opts.pretty && len(opts.format) > 0 {
    33  				return fmt.Errorf("--format is incompatible with human friendly format")
    34  			}
    35  			return runInspect(dockerCli, opts)
    36  		},
    37  	}
    38  
    39  	flags := cmd.Flags()
    40  	flags.StringVarP(&opts.format, "format", "f", "", "Format the output using the given go template")
    41  	flags.BoolVar(&opts.pretty, "pretty", false, "Print the information in a human friendly format.")
    42  	return cmd
    43  }
    44  
    45  func runInspect(dockerCli *command.DockerCli, opts inspectOptions) error {
    46  	client := dockerCli.Client()
    47  	ctx := context.Background()
    48  
    49  	if opts.pretty {
    50  		opts.format = "pretty"
    51  	}
    52  
    53  	getRef := func(ref string) (interface{}, []byte, error) {
    54  		service, _, err := client.ServiceInspectWithRaw(ctx, ref)
    55  		if err == nil || !apiclient.IsErrServiceNotFound(err) {
    56  			return service, nil, err
    57  		}
    58  		return nil, nil, fmt.Errorf("Error: no such service: %s", ref)
    59  	}
    60  
    61  	f := opts.format
    62  	if len(f) == 0 {
    63  		f = "raw"
    64  		if len(dockerCli.ConfigFile().ServiceInspectFormat) > 0 {
    65  			f = dockerCli.ConfigFile().ServiceInspectFormat
    66  		}
    67  	}
    68  
    69  	// check if the user is trying to apply a template to the pretty format, which
    70  	// is not supported
    71  	if strings.HasPrefix(f, "pretty") && f != "pretty" {
    72  		return fmt.Errorf("Cannot supply extra formatting options to the pretty template")
    73  	}
    74  
    75  	serviceCtx := formatter.Context{
    76  		Output: dockerCli.Out(),
    77  		Format: formatter.NewServiceFormat(f),
    78  	}
    79  
    80  	if err := formatter.ServiceInspectWrite(serviceCtx, opts.refs, getRef); err != nil {
    81  		return cli.StatusError{StatusCode: 1, Status: err.Error()}
    82  	}
    83  	return nil
    84  }