| package main |
| |
| import ( |
| "errors" |
| "fmt" |
| "os" |
| |
| "github.com/opencontainers/runc/libcontainer" |
| "github.com/urfave/cli" |
| ) |
| |
| var startCommand = cli.Command{ |
| Name: "start", |
| Usage: "executes the user defined process in a created container", |
| ArgsUsage: `<container-id> |
| |
| Where "<container-id>" is your name for the instance of the container that you |
| are starting. The name you provide for the container instance must be unique on |
| your host.`, |
| Description: `The start command executes the user defined process in a created container.`, |
| Action: func(context *cli.Context) error { |
| if err := checkArgs(context, 1, exactArgs); err != nil { |
| return err |
| } |
| container, err := getContainer(context) |
| if err != nil { |
| return err |
| } |
| status, err := container.Status() |
| if err != nil { |
| return err |
| } |
| switch status { |
| case libcontainer.Created: |
| notifySocket, err := notifySocketStart(context, os.Getenv("NOTIFY_SOCKET"), container.ID()) |
| if err != nil { |
| return err |
| } |
| if err := container.Exec(); err != nil { |
| return err |
| } |
| if notifySocket != nil { |
| return notifySocket.waitForContainer(container) |
| } |
| return nil |
| case libcontainer.Stopped: |
| return errors.New("cannot start a container that has stopped") |
| case libcontainer.Running: |
| return errors.New("cannot start an already running container") |
| default: |
| return fmt.Errorf("cannot start a container in the %s state\n", status) |
| } |
| }, |
| } |