moby--moby/daemon/wait.go

package daemon

import (
	"time"

	"golang.org/x/net/context"
)

// ContainerWait stops processing until the given container is
// stopped. If the container is not found, an error is returned. On a
// successful stop, the exit code of the container is returned. On a
// timeout, an error is returned. If you want to wait forever, supply
// a negative duration for the timeout.
func (daemon *Daemon) ContainerWait(name string, timeout time.Duration) (int, error) {
	container, err := daemon.GetContainer(name)
	if err != nil {
		return -1, err
	}

	return container.WaitStop(timeout)
}

// ContainerWaitWithContext returns a channel where exit code is sent
// when container stops. Channel can be cancelled with a context.
func (daemon *Daemon) ContainerWaitWithContext(ctx context.Context, name string) (<-chan int, error) {
	container, err := daemon.GetContainer(name)
	if err != nil {
		return nil, err
	}

	return container.WaitWithContext(ctx), nil
}