package main import ( "fmt" "os" "time" "github.com/containers/libpod/cmd/podman/libpodruntime" "github.com/pkg/errors" "github.com/urfave/cli" ) var ( waitDescription = ` podman wait Block until one or more containers stop and then print their exit codes ` waitFlags = []cli.Flag{ cli.UintFlag{ Name: "interval, i", Usage: "Milliseconds to wait before polling for completion", Value: 250, }, LatestFlag, } waitCommand = cli.Command{ Name: "wait", Usage: "Block on one or more containers", Description: waitDescription, Flags: waitFlags, Action: waitCmd, ArgsUsage: "CONTAINER-NAME [CONTAINER-NAME ...]", OnUsageError: usageErrorHandler, } ) func waitCmd(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") } runtime, err := libpodruntime.GetRuntime(c) 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.Bool("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.Uint("interval") == 0 { return errors.Errorf("interval must be greater then 0") } returnCode, err := ctr.WaitWithInterval(time.Duration(c.Uint("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 }