package main import ( "fmt" "os" "time" "github.com/containers/libpod/cmd/podman/cliconfig" "github.com/containers/libpod/cmd/podman/libpodruntime" "github.com/pkg/errors" "github.com/spf13/cobra" ) var ( waitCommand cliconfig.WaitValues waitDescription = ` podman wait Block until one or more containers stop and then print their exit codes ` _waitCommand = &cobra.Command{ Use: "wait", Short: "Block on one or more containers", Long: waitDescription, RunE: func(cmd *cobra.Command, args []string) error { waitCommand.InputArgs = args waitCommand.GlobalFlags = MainGlobalOpts return waitCmd(&waitCommand) }, Example: "CONTAINER-NAME [CONTAINER-NAME ...]", } ) func init() { waitCommand.Command = _waitCommand waitCommand.SetUsageTemplate(UsageTemplate()) flags := waitCommand.Flags() flags.UintVarP(&waitCommand.Interval, "interval", "i", 250, "Milliseconds to wait before polling for completion") flags.BoolVarP(&waitCommand.Latest, "latest", "l", false, "Act on the latest container podman is aware of") } func waitCmd(c *cliconfig.WaitValues) error { args := c.InputArgs if len(args) < 1 && !c.Latest { return errors.Errorf("you must provide at least one container name or id") } runtime, err := libpodruntime.GetRuntime(&c.PodmanCommand) if err != nil { return errors.Wrapf(err, "error creating libpod runtime") } defer runtime.Shutdown(false) if err != nil { return errors.Wrapf(err, "could not get config") } var lastError error if c.Latest { latestCtr, err := runtime.GetLatestContainer() if err != nil { return errors.Wrapf(err, "unable to wait on latest container") } args = append(args, latestCtr.ID()) } for _, container := range args { ctr, err := runtime.LookupContainer(container) if err != nil { return errors.Wrapf(err, "unable to find container %s", container) } if c.Interval == 0 { return errors.Errorf("interval must be greater then 0") } returnCode, err := ctr.WaitWithInterval(time.Duration(c.Interval) * time.Millisecond) if err != nil { if lastError != nil { fmt.Fprintln(os.Stderr, lastError) } lastError = errors.Wrapf(err, "failed to wait for the container %v", container) } else { fmt.Println(returnCode) } } return lastError }