package main import ( "fmt" "os" "strconv" "github.com/pkg/errors" "github.com/projectatomic/libpod/libpod" "github.com/sirupsen/logrus" "github.com/urfave/cli" ) var ( startFlags = []cli.Flag{ cli.BoolFlag{ Name: "attach, a", Usage: "Attach container's STDOUT and STDERR", }, cli.StringFlag{ Name: "detach-keys", Usage: "Override the key sequence for detaching a container. Format is a single character [a-Z] or ctrl- where is one of: a-z, @, ^, [, , or _.", }, cli.BoolFlag{ Name: "interactive, i", Usage: "Keep STDIN open even if not attached", }, cli.BoolFlag{ Name: "sig-proxy", Usage: "proxy received signals to the process", }, LatestFlag, } startDescription = ` podman start Starts one or more containers. The container name or ID can be used. ` startCommand = cli.Command{ Name: "start", Usage: "Start one or more containers", Description: startDescription, Flags: startFlags, Action: startCmd, ArgsUsage: "CONTAINER-NAME [CONTAINER-NAME ...]", UseShortOptionHandling: true, } ) func startCmd(c *cli.Context) error { args := c.Args() if len(args) < 1 && !c.Bool("latest") { return errors.Errorf("you must provide at least one container name or id") } attach := c.Bool("attach") if len(args) > 1 && attach { return errors.Errorf("you cannot start and attach multiple containers at once") } if err := validateFlags(c, startFlags); err != nil { return err } if c.Bool("sig-proxy") && !attach { return errors.Wrapf(libpod.ErrInvalidArg, "you cannot use sig-proxy without --attach") } runtime, err := getRuntime(c) if err != nil { return errors.Wrapf(err, "error creating libpod runtime") } defer runtime.Shutdown(false) if c.Bool("latest") { lastCtr, err := runtime.GetLatestContainer() if err != nil { return errors.Wrapf(err, "unable to get latest container") } args = append(args, lastCtr.ID()) } 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 } // We can only be interactive if both the config and the command-line say so if c.Bool("interactive") && !ctr.Config().Stdin { return errors.Errorf("the container was not created with the interactive option") } noStdIn := c.Bool("interactive") tty, err := strconv.ParseBool(ctr.Spec().Annotations["io.kubernetes.cri-o.TTY"]) if err != nil { return errors.Wrapf(err, "unable to parse annotations in %s", ctr.ID()) } // Handle start --attach // We only get a terminal session if both a tty was specified in the spec and // -a on the command-line was given. if attach && tty { attachChan, err := ctr.StartAndAttach(noStdIn, c.String("detach-keys")) if err != nil { return errors.Wrapf(err, "unable to start container %s", ctr.ID()) } if c.Bool("sig-proxy") { ProxySignals(ctr) } // Wait for attach to complete err = <-attachChan if err != nil { return errors.Wrapf(err, "error attaching to container %s", ctr.ID()) } if ecode, err := ctr.ExitCode(); err != nil { logrus.Errorf("unable to get exit code of container %s: %q", ctr.ID(), err) } else { exitCode = int(ecode) } return ctr.Cleanup() } // Handle non-attach start if err := ctr.Start(); err != nil { if lastError != nil { fmt.Fprintln(os.Stderr, lastError) } lastError = errors.Wrapf(err, "unable to start container %q", container) continue } fmt.Println(ctr.ID()) } return lastError }