1 package main
2
3 import (
4 "encoding/json"
5 "os"
6
7 "github.com/opencontainers/runc/libcontainer"
8 "github.com/opencontainers/runc/libcontainer/utils"
9 "github.com/urfave/cli"
10 )
11
12 var stateCommand = cli.Command{
13 Name: "state",
14 Usage: "output the state of a container",
15 ArgsUsage: `<container-id>
16
17 Where "<container-id>" is your name for the instance of the container.`,
18 Description: `The state command outputs current state information for the
19 instance of a container.`,
20 Action: func(context *cli.Context) error {
21 if err := checkArgs(context, 1, exactArgs); err != nil {
22 return err
23 }
24 container, err := getContainer(context)
25 if err != nil {
26 return err
27 }
28 containerStatus, err := container.Status()
29 if err != nil {
30 return err
31 }
32 state, err := container.State()
33 if err != nil {
34 return err
35 }
36 pid := state.BaseState.InitProcessPid
37 if containerStatus == libcontainer.Stopped {
38 pid = 0
39 }
40 bundle, annotations := utils.Annotations(state.Config.Labels)
41 cs := containerState{
42 Version: state.BaseState.Config.Version,
43 ID: state.BaseState.ID,
44 InitProcessPid: pid,
45 Status: containerStatus.String(),
46 Bundle: bundle,
47 Rootfs: state.BaseState.Config.Rootfs,
48 Created: state.BaseState.Created,
49 Annotations: annotations,
50 }
51 data, err := json.MarshalIndent(cs, "", " ")
52 if err != nil {
53 return err
54 }
55 os.Stdout.Write(data)
56 return nil
57 },
58 }
59
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