1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
package main
import (
"context"
"strings"
"github.com/containers/buildah/pkg/formats"
"github.com/containers/libpod/cmd/podman/cliconfig"
"github.com/containers/libpod/pkg/adapter"
"github.com/containers/libpod/pkg/util"
"github.com/pkg/errors"
"github.com/spf13/cobra"
)
const (
inspectTypeContainer = "container"
inspectTypeImage = "image"
inspectAll = "all"
)
var (
inspectCommand cliconfig.InspectValues
inspectDescription = `This displays the low-level information on containers and images identified by name or ID.
If given a name that matches both a container and an image, this command inspects the container. By default, this will render all results in a JSON array.`
_inspectCommand = cobra.Command{
Use: "inspect [flags] CONTAINER | IMAGE",
Short: "Display the configuration of a container or image",
Long: inspectDescription,
RunE: func(cmd *cobra.Command, args []string) error {
inspectCommand.InputArgs = args
inspectCommand.GlobalFlags = MainGlobalOpts
inspectCommand.Remote = remoteclient
return inspectCmd(&inspectCommand)
},
Example: `podman inspect alpine
podman inspect --format "imageId: {{.Id}} size: {{.Size}}" alpine
podman inspect --format "image: {{.ImageName}} driver: {{.Driver}}" myctr`,
}
)
func inspectInit(command *cliconfig.InspectValues) {
command.SetHelpTemplate(HelpTemplate())
command.SetUsageTemplate(UsageTemplate())
flags := command.Flags()
flags.StringVarP(&command.Format, "format", "f", "", "Change the output format to a Go template")
// -t flag applicable only to 'podman inspect', not 'image/container inspect'
ambiguous := strings.Contains(command.Use, "|")
if ambiguous {
flags.StringVarP(&command.TypeObject, "type", "t", inspectAll, "Return JSON for specified type, (image or container)")
}
if strings.Contains(command.Use, "CONTAINER") {
containers_only := " (containers only)"
if !ambiguous {
containers_only = ""
command.TypeObject = inspectTypeContainer
}
flags.BoolVarP(&command.Latest, "latest", "l", false, "Act on the latest container podman is aware of"+containers_only)
flags.BoolVarP(&command.Size, "size", "s", false, "Display total file size"+containers_only)
markFlagHiddenForRemoteClient("latest", flags)
} else {
command.TypeObject = inspectTypeImage
}
}
func init() {
inspectCommand.Command = &_inspectCommand
inspectInit(&inspectCommand)
}
func inspectCmd(c *cliconfig.InspectValues) error {
args := c.InputArgs
inspectType := c.TypeObject
latestContainer := c.Latest
if len(args) == 0 && !latestContainer {
return errors.Errorf("container or image name must be specified: podman inspect [options [...]] name")
}
if len(args) > 0 && latestContainer {
return errors.Errorf("you cannot provide additional arguments with --latest")
}
runtime, err := adapter.GetRuntime(getContext(), &c.PodmanCommand)
if err != nil {
return errors.Wrapf(err, "error creating libpod runtime")
}
defer runtime.DeferredShutdown(false)
if !util.StringInSlice(inspectType, []string{inspectTypeContainer, inspectTypeImage, inspectAll}) {
return errors.Errorf("the only recognized types are %q, %q, and %q", inspectTypeContainer, inspectTypeImage, inspectAll)
}
outputFormat := c.Format
if strings.Contains(outputFormat, "{{.Id}}") {
outputFormat = strings.Replace(outputFormat, "{{.Id}}", formats.IDString, -1)
}
// These fields were renamed, so we need to provide backward compat for
// the old names.
if strings.Contains(outputFormat, ".Src") {
outputFormat = strings.Replace(outputFormat, ".Src", ".Source", -1)
}
if strings.Contains(outputFormat, ".Dst") {
outputFormat = strings.Replace(outputFormat, ".Dst", ".Destination", -1)
}
if latestContainer {
lc, err := runtime.GetLatestContainer()
if err != nil {
return err
}
args = append(args, lc.ID())
inspectType = inspectTypeContainer
}
inspectedObjects, iterateErr := iterateInput(getContext(), c.Size, args, runtime, inspectType)
if iterateErr != nil {
return iterateErr
}
var out formats.Writer
if outputFormat != "" && outputFormat != formats.JSONString {
//template
out = formats.StdoutTemplateArray{Output: inspectedObjects, Template: outputFormat}
} else {
// default is json output
out = formats.JSONStructArray{Output: inspectedObjects}
}
return out.Out()
}
// func iterateInput iterates the images|containers the user has requested and returns the inspect data and error
func iterateInput(ctx context.Context, size bool, args []string, runtime *adapter.LocalRuntime, inspectType string) ([]interface{}, error) {
var (
data interface{}
inspectedItems []interface{}
inspectError error
)
for _, input := range args {
switch inspectType {
case inspectTypeContainer:
ctr, err := runtime.LookupContainer(input)
if err != nil {
inspectError = errors.Wrapf(err, "error looking up container %q", input)
break
}
data, err = ctr.Inspect(size)
if err != nil {
inspectError = errors.Wrapf(err, "error inspecting container %s", ctr.ID())
break
}
case inspectTypeImage:
image, err := runtime.NewImageFromLocal(input)
if err != nil {
inspectError = errors.Wrapf(err, "error getting image %q", input)
break
}
data, err = image.Inspect(ctx)
if err != nil {
inspectError = errors.Wrapf(err, "error parsing image data %q", image.ID())
break
}
case inspectAll:
ctr, err := runtime.LookupContainer(input)
if err != nil {
image, err := runtime.NewImageFromLocal(input)
if err != nil {
inspectError = errors.Wrapf(err, "error getting image %q", input)
break
}
data, err = image.Inspect(ctx)
if err != nil {
inspectError = errors.Wrapf(err, "error parsing image data %q", image.ID())
break
}
} else {
data, err = ctr.Inspect(size)
if err != nil {
inspectError = errors.Wrapf(err, "error inspecting container %s", ctr.ID())
break
}
}
}
if inspectError == nil {
inspectedItems = append(inspectedItems, data)
}
}
return inspectedItems, inspectError
}
|
