Add --pretty option to "secret inspect" and "config inspect"

This adds a pretty template for both inspect subcommands. For configs,
it's particularly useful because it's a way to expose the config payload
in the CLI in a non-base64-encoded way.

Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>

cli/command/config/inspect.go

@@ -1,9 +1,12 @@
 package config
 
 import (
+	"fmt"
+	"strings"
+
 	"github.com/docker/cli/cli"
 	"github.com/docker/cli/cli/command"
-	"github.com/docker/cli/cli/command/inspect"
+	"github.com/docker/cli/cli/command/formatter"
 	"github.com/spf13/cobra"
 	"golang.org/x/net/context"
 )
@@ -11,6 +14,7 @@ import (
 type inspectOptions struct {
 	names  []string
 	format string
+	pretty bool
 }
 
 func newConfigInspectCommand(dockerCli command.Cli) *cobra.Command {
@@ -26,6 +30,7 @@ func newConfigInspectCommand(dockerCli command.Cli) *cobra.Command {
 	}
 
 	cmd.Flags().StringVarP(&opts.format, "format", "f", "", "Format the output using the given Go template")
+	cmd.Flags().BoolVar(&opts.pretty, "pretty", false, "Print the information in a human friendly format")
 	return cmd
 }
 
@@ -33,9 +38,29 @@ func runConfigInspect(dockerCli command.Cli, opts inspectOptions) error {
 	client := dockerCli.Client()
 	ctx := context.Background()
 
+	if opts.pretty {
+		opts.format = "pretty"
+	}
+
 	getRef := func(id string) (interface{}, []byte, error) {
 		return client.ConfigInspectWithRaw(ctx, id)
 	}
+	f := opts.format
+
+	// check if the user is trying to apply a template to the pretty format, which
+	// is not supported
+	if strings.HasPrefix(f, "pretty") && f != "pretty" {
+		return fmt.Errorf("Cannot supply extra formatting options to the pretty template")
+	}
+
+	configCtx := formatter.Context{
+		Output: dockerCli.Out(),
+		Format: formatter.NewConfigFormat(f, false),
+	}
+
+	if err := formatter.ConfigInspectWrite(configCtx, opts.names, getRef); err != nil {
+		return cli.StatusError{StatusCode: 1, Status: err.Error()}
+	}
+	return nil
 
-	return inspect.Inspect(dockerCli.Out(), opts.names, opts.format, getRef)
 }

cli/command/config/inspect_test.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"testing"
+	"time"
 
 	"github.com/docker/cli/cli/internal/test"
 	"github.com/docker/docker/api/types/swarm"
@@ -148,3 +149,39 @@ func TestConfigInspectWithFormat(t *testing.T) {
 		testutil.EqualNormalizedString(t, testutil.RemoveSpace, actual, string(expected))
 	}
 }
+
+func TestConfigInspectPretty(t *testing.T) {
+	testCases := []struct {
+		name              string
+		configInspectFunc func(string) (swarm.Config, []byte, error)
+	}{
+		{
+			name: "simple",
+			configInspectFunc: func(id string) (swarm.Config, []byte, error) {
+				return *Config(
+					ConfigLabels(map[string]string{
+						"lbl1": "value1",
+					}),
+					ConfigID("configID"),
+					ConfigName("configName"),
+					ConfigCreatedAt(time.Time{}),
+					ConfigUpdatedAt(time.Time{}),
+					ConfigData([]byte("payload here")),
+				), []byte{}, nil
+			},
+		},
+	}
+	for _, tc := range testCases {
+		buf := new(bytes.Buffer)
+		cmd := newConfigInspectCommand(
+			test.NewFakeCli(&fakeClient{
+				configInspectFunc: tc.configInspectFunc,
+			}, buf))
+		cmd.SetArgs([]string{"configID"})
+		cmd.Flags().Set("pretty", "true")
+		assert.NoError(t, cmd.Execute())
+		actual := buf.String()
+		expected := golden.Get(t, []byte(actual), fmt.Sprintf("config-inspect-pretty.%s.golden", tc.name))
+		testutil.EqualNormalizedString(t, testutil.RemoveSpace, actual, string(expected))
+	}
+}

cli/command/config/testdata/config-inspect-pretty.simple.golden

@@ -0,0 +1,8 @@
+ID: configID
+Name: configName
+Labels:
+	- lbl1=value1
+Created at: 0001-01-01 00:00:00+0000 utc
+Updated at: 0001-01-01 00:00:00+0000 utc
+Data:
+payload here

cli/command/formatter/config.go

@@ -5,6 +5,8 @@ import (
 	"strings"
 	"time"
 
+	"github.com/docker/cli/cli/command"
+	"github.com/docker/cli/cli/command/inspect"
 	"github.com/docker/docker/api/types/swarm"
 	units "github.com/docker/go-units"
 )
@@ -14,11 +16,24 @@ const (
 	configIDHeader                     = "ID"
 	configCreatedHeader                = "CREATED"
 	configUpdatedHeader                = "UPDATED"
+	configInspectPrettyTemplate Format = `ID:			{{.ID}}
+Name:			{{.Name}}
+{{- if .Labels }}
+Labels:
+{{- range $k, $v := .Labels }}
+ - {{ $k }}{{if $v }}={{ $v }}{{ end }}
+{{- end }}{{ end }}
+Created at:            	{{.CreatedAt}}
+Updated at:            	{{.UpdatedAt}}
+Data:
+{{.Data}}`
 )
 
 // NewConfigFormat returns a Format for rendering using a config Context
 func NewConfigFormat(source string, quiet bool) Format {
 	switch source {
+	case PrettyFormatKey:
+		return configInspectPrettyTemplate
 	case TableFormatKey:
 		if quiet {
 			return defaultQuietFormat
@@ -98,3 +113,59 @@ func (c *configContext) Label(name string) string {
 	}
 	return c.c.Spec.Annotations.Labels[name]
 }
+
+// ConfigInspectWrite renders the context for a list of configs
+func ConfigInspectWrite(ctx Context, refs []string, getRef inspect.GetRefFunc) error {
+	if ctx.Format != configInspectPrettyTemplate {
+		return inspect.Inspect(ctx.Output, refs, string(ctx.Format), getRef)
+	}
+	render := func(format func(subContext subContext) error) error {
+		for _, ref := range refs {
+			configI, _, err := getRef(ref)
+			if err != nil {
+				return err
+			}
+			config, ok := configI.(swarm.Config)
+			if !ok {
+				return fmt.Errorf("got wrong object to inspect :%v", ok)
+			}
+			if err := format(&configInspectContext{Config: config}); err != nil {
+				return err
+			}
+		}
+		return nil
+	}
+	return ctx.Write(&configInspectContext{}, render)
+}
+
+type configInspectContext struct {
+	swarm.Config
+	subContext
+}
+
+func (ctx *configInspectContext) ID() string {
+	return ctx.Config.ID
+}
+
+func (ctx *configInspectContext) Name() string {
+	return ctx.Config.Spec.Name
+}
+
+func (ctx *configInspectContext) Labels() map[string]string {
+	return ctx.Config.Spec.Labels
+}
+
+func (ctx *configInspectContext) CreatedAt() string {
+	return command.PrettyPrint(ctx.Config.CreatedAt)
+}
+
+func (ctx *configInspectContext) UpdatedAt() string {
+	return command.PrettyPrint(ctx.Config.UpdatedAt)
+}
+
+func (ctx *configInspectContext) Data() string {
+	if ctx.Config.Spec.Data == nil {
+		return ""
+	}
+	return string(ctx.Config.Spec.Data)
+}

cli/command/formatter/node.go

@@ -69,8 +69,7 @@ TLS Info:
 {{.TLSInfoTrustRoot}}
  Issuer Subject:	{{.TLSInfoCertIssuerSubject}}
  Issuer Public Key:	{{.TLSInfoCertIssuerPublicKey}}
-{{- end}}
-`
+{{- end}}`
 	nodeIDHeader        = "ID"
 	selfHeader          = ""
 	hostnameHeader      = "HOSTNAME"
@@ -177,7 +176,7 @@ func (c *nodeContext) TLSStatus() string {
 	return "Needs Rotation"
 }
 
-// NodeInspectWrite renders the context for a list of services
+// NodeInspectWrite renders the context for a list of nodes
 func NodeInspectWrite(ctx Context, refs []string, getRef inspect.GetRefFunc) error {
 	if ctx.Format != nodeInspectPrettyTemplate {
 		return inspect.Inspect(ctx.Output, refs, string(ctx.Format), getRef)

cli/command/formatter/node_test.go

@@ -341,7 +341,6 @@ data
 
  Issuer Subject:	c3ViamVjdA==
  Issuer Public Key:	cHViS2V5
-
 `
 	assert.Equal(t, expected, out.String())
 }

cli/command/formatter/secret.go

@@ -5,6 +5,8 @@ import (
 	"strings"
 	"time"
 
+	"github.com/docker/cli/cli/command"
+	"github.com/docker/cli/cli/command/inspect"
 	"github.com/docker/docker/api/types/swarm"
 	units "github.com/docker/go-units"
 )
@@ -14,11 +16,22 @@ const (
 	secretIDHeader                     = "ID"
 	secretCreatedHeader                = "CREATED"
 	secretUpdatedHeader                = "UPDATED"
+	secretInspectPrettyTemplate Format = `ID:			{{.ID}}
+Name:			{{.Name}}
+{{- if .Labels }}
+Labels:
+{{- range $k, $v := .Labels }}
+ - {{ $k }}{{if $v }}={{ $v }}{{ end }}
+{{- end }}{{ end }}
+Created at:            	{{.CreatedAt}}
+Updated at:            	{{.UpdatedAt}}`
 )
 
 // NewSecretFormat returns a Format for rendering using a secret Context
 func NewSecretFormat(source string, quiet bool) Format {
 	switch source {
+	case PrettyFormatKey:
+		return secretInspectPrettyTemplate
 	case TableFormatKey:
 		if quiet {
 			return defaultQuietFormat
@@ -98,3 +111,52 @@ func (c *secretContext) Label(name string) string {
 	}
 	return c.s.Spec.Annotations.Labels[name]
 }
+
+// SecretInspectWrite renders the context for a list of secrets
+func SecretInspectWrite(ctx Context, refs []string, getRef inspect.GetRefFunc) error {
+	if ctx.Format != secretInspectPrettyTemplate {
+		return inspect.Inspect(ctx.Output, refs, string(ctx.Format), getRef)
+	}
+	render := func(format func(subContext subContext) error) error {
+		for _, ref := range refs {
+			secretI, _, err := getRef(ref)
+			if err != nil {
+				return err
+			}
+			secret, ok := secretI.(swarm.Secret)
+			if !ok {
+				return fmt.Errorf("got wrong object to inspect :%v", ok)
+			}
+			if err := format(&secretInspectContext{Secret: secret}); err != nil {
+				return err
+			}
+		}
+		return nil
+	}
+	return ctx.Write(&secretInspectContext{}, render)
+}
+
+type secretInspectContext struct {
+	swarm.Secret
+	subContext
+}
+
+func (ctx *secretInspectContext) ID() string {
+	return ctx.Secret.ID
+}
+
+func (ctx *secretInspectContext) Name() string {
+	return ctx.Secret.Spec.Name
+}
+
+func (ctx *secretInspectContext) Labels() map[string]string {
+	return ctx.Secret.Spec.Labels
+}
+
+func (ctx *secretInspectContext) CreatedAt() string {
+	return command.PrettyPrint(ctx.Secret.CreatedAt)
+}
+
+func (ctx *secretInspectContext) UpdatedAt() string {
+	return command.PrettyPrint(ctx.Secret.UpdatedAt)
+}

cli/command/secret/inspect.go

@@ -1,9 +1,12 @@
 package secret
 
 import (
+	"fmt"
+	"strings"
+
 	"github.com/docker/cli/cli"
 	"github.com/docker/cli/cli/command"
-	"github.com/docker/cli/cli/command/inspect"
+	"github.com/docker/cli/cli/command/formatter"
 	"github.com/spf13/cobra"
 	"golang.org/x/net/context"
 )
@@ -11,6 +14,7 @@ import (
 type inspectOptions struct {
 	names  []string
 	format string
+	pretty bool
 }
 
 func newSecretInspectCommand(dockerCli command.Cli) *cobra.Command {
@@ -26,6 +30,7 @@ func newSecretInspectCommand(dockerCli command.Cli) *cobra.Command {
 	}
 
 	cmd.Flags().StringVarP(&opts.format, "format", "f", "", "Format the output using the given Go template")
+	cmd.Flags().BoolVar(&opts.pretty, "pretty", false, "Print the information in a human friendly format")
 	return cmd
 }
 
@@ -33,9 +38,28 @@ func runSecretInspect(dockerCli command.Cli, opts inspectOptions) error {
 	client := dockerCli.Client()
 	ctx := context.Background()
 
+	if opts.pretty {
+		opts.format = "pretty"
+	}
+
 	getRef := func(id string) (interface{}, []byte, error) {
 		return client.SecretInspectWithRaw(ctx, id)
 	}
+	f := opts.format
 
-	return inspect.Inspect(dockerCli.Out(), opts.names, opts.format, getRef)
+	// check if the user is trying to apply a template to the pretty format, which
+	// is not supported
+	if strings.HasPrefix(f, "pretty") && f != "pretty" {
+		return fmt.Errorf("Cannot supply extra formatting options to the pretty template")
+	}
+
+	secretCtx := formatter.Context{
+		Output: dockerCli.Out(),
+		Format: formatter.NewSecretFormat(f, false),
+	}
+
+	if err := formatter.SecretInspectWrite(secretCtx, opts.names, getRef); err != nil {
+		return cli.StatusError{StatusCode: 1, Status: err.Error()}
+	}
+	return nil
 }

cli/command/secret/inspect_test.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"testing"
+	"time"
 
 	"github.com/docker/cli/cli/internal/test"
 	"github.com/docker/docker/api/types/swarm"
@@ -148,3 +149,38 @@ func TestSecretInspectWithFormat(t *testing.T) {
 		testutil.EqualNormalizedString(t, testutil.RemoveSpace, actual, string(expected))
 	}
 }
+
+func TestSecretInspectPretty(t *testing.T) {
+	testCases := []struct {
+		name              string
+		secretInspectFunc func(string) (swarm.Secret, []byte, error)
+	}{
+		{
+			name: "simple",
+			secretInspectFunc: func(id string) (swarm.Secret, []byte, error) {
+				return *Secret(
+					SecretLabels(map[string]string{
+						"lbl1": "value1",
+					}),
+					SecretID("secretID"),
+					SecretName("secretName"),
+					SecretCreatedAt(time.Time{}),
+					SecretUpdatedAt(time.Time{}),
+				), []byte{}, nil
+			},
+		},
+	}
+	for _, tc := range testCases {
+		buf := new(bytes.Buffer)
+		cmd := newSecretInspectCommand(
+			test.NewFakeCli(&fakeClient{
+				secretInspectFunc: tc.secretInspectFunc,
+			}, buf))
+		cmd.SetArgs([]string{"secretID"})
+		cmd.Flags().Set("pretty", "true")
+		assert.NoError(t, cmd.Execute())
+		actual := buf.String()
+		expected := golden.Get(t, []byte(actual), fmt.Sprintf("secret-inspect-pretty.%s.golden", tc.name))
+		testutil.EqualNormalizedString(t, testutil.RemoveSpace, actual, string(expected))
+	}
+}

cli/command/secret/testdata/secret-inspect-pretty.simple.golden

@@ -0,0 +1,6 @@
+ID: secretID
+Name: secretName
+Labels:
+	- lbl1=value1
+Created at: 0001-01-01 00:00:00+0000 utc
+Updated at: 0001-01-01 00:00:00+0000 utc

cli/internal/test/builders/config.go

@@ -59,3 +59,10 @@ func ConfigUpdatedAt(t time.Time) func(*swarm.Config) {
 		config.UpdatedAt = t
 	}
 }
+
+// ConfigData sets the config payload.
+func ConfigData(data []byte) func(*swarm.Config) {
+	return func(config *swarm.Config) {
+		config.Spec.Data = data
+	}
+}