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package main
import (
"fmt"
"os"
"github.com/containers/libpod/cmd/podman/cliconfig"
"github.com/containers/libpod/cmd/podman/libpodruntime"
"github.com/containers/libpod/libpod"
opentracing "github.com/opentracing/opentracing-go"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
var (
startCommand cliconfig.StartValues
startDescription = `Starts one or more containers. The container name or ID can be used.`
_startCommand = &cobra.Command{
Use: "start [flags] CONTAINER [CONTAINER...]",
Short: "Start one or more containers",
Long: startDescription,
RunE: func(cmd *cobra.Command, args []string) error {
startCommand.InputArgs = args
startCommand.GlobalFlags = MainGlobalOpts
return startCmd(&startCommand)
},
Example: `podman start --latest
podman start 860a4b231279 5421ab43b45
podman start --interactive --attach imageID`,
}
)
func init() {
startCommand.Command = _startCommand
startCommand.SetHelpTemplate(HelpTemplate())
startCommand.SetUsageTemplate(UsageTemplate())
flags := startCommand.Flags()
flags.BoolVarP(&startCommand.Attach, "attach", "a", false, "Attach container's STDOUT and STDERR")
flags.StringVar(&startCommand.DetachKeys, "detach-keys", "", "Override the key sequence for detaching a container. Format is a single character [a-Z] or ctrl-<value> where <value> is one of: a-z, @, ^, [, , or _")
flags.BoolVarP(&startCommand.Interactive, "interactive", "i", false, "Keep STDIN open even if not attached")
flags.BoolVarP(&startCommand.Latest, "latest", "l", false, "Act on the latest container podman is aware of")
flags.BoolVar(&startCommand.SigProxy, "sig-proxy", true, "Proxy received signals to the process (default true if attaching, false otherwise)")
markFlagHiddenForRemoteClient("latest", flags)
}
func startCmd(c *cliconfig.StartValues) error {
if c.Bool("trace") {
span, _ := opentracing.StartSpanFromContext(Ctx, "startCmd")
defer span.Finish()
}
args := c.InputArgs
if len(args) < 1 && !c.Latest {
return errors.Errorf("you must provide at least one container name or id")
}
attach := c.Attach
if len(args) > 1 && attach {
return errors.Errorf("you cannot start and attach multiple containers at once")
}
sigProxy := c.SigProxy
if sigProxy && !attach {
if c.Flag("sig-proxy").Changed {
return errors.Wrapf(libpod.ErrInvalidArg, "you cannot use sig-proxy without --attach")
} else {
sigProxy = false
}
}
runtime, err := libpodruntime.GetRuntime(&c.PodmanCommand)
if err != nil {
return errors.Wrapf(err, "error creating libpod runtime")
}
defer runtime.Shutdown(false)
if c.Latest {
lastCtr, err := runtime.GetLatestContainer()
if err != nil {
return errors.Wrapf(err, "unable to get latest container")
}
args = append(args, lastCtr.ID())
}
ctx := getContext()
var lastError error
for _, container := range args {
ctr, err := runtime.LookupContainer(container)
if err != nil {
if lastError != nil {
fmt.Fprintln(os.Stderr, lastError)
}
lastError = errors.Wrapf(err, "unable to find container %s", container)
continue
}
ctrState, err := ctr.State()
if err != nil {
return errors.Wrapf(err, "unable to get container state")
}
ctrRunning := ctrState == libpod.ContainerStateRunning
if attach {
inputStream := os.Stdin
if !c.Interactive {
inputStream = nil
}
// attach to the container and also start it not already running
// If the container is in a pod, also set to recursively start dependencies
err = startAttachCtr(ctr, os.Stdout, os.Stderr, inputStream, c.DetachKeys, sigProxy, !ctrRunning, ctr.PodID() != "")
if errors.Cause(err) == libpod.ErrDetach {
// User manually detached
// Exit cleanly immediately
exitCode = 0
return nil
}
if ctrRunning {
return err
}
if err != nil {
return errors.Wrapf(err, "unable to start container %s", ctr.ID())
}
if ecode, err := ctr.Wait(); err != nil {
if errors.Cause(err) == libpod.ErrNoSuchCtr {
// The container may have been removed
// Go looking for an exit file
ctrExitCode, err := readExitFile(runtime.GetConfig().TmpDir, ctr.ID())
if err != nil {
logrus.Errorf("Cannot get exit code: %v", err)
exitCode = 127
} else {
exitCode = ctrExitCode
}
}
} else {
exitCode = int(ecode)
}
return nil
}
if ctrRunning {
fmt.Println(ctr.ID())
continue
}
// Handle non-attach start
// If the container is in a pod, also set to recursively start dependencies
if err := ctr.Start(ctx, ctr.PodID() != ""); err != nil {
if lastError != nil {
fmt.Fprintln(os.Stderr, lastError)
}
lastError = errors.Wrapf(err, "unable to start container %q", container)
continue
}
fmt.Println(container)
}
return lastError
}
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