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package daemon
import (
"fmt"
"github.com/docker/docker/container"
)
// ContainerPause pauses a container
func (daemon *Daemon) ContainerPause(name string) error {
container, err := daemon.GetContainer(name)
if err != nil {
return err
}
if err := daemon.containerPause(container); err != nil {
return err
}
return nil
}
// containerPause pauses the container execution without stopping the process.
// The execution can be resumed by calling containerUnpause.
func (daemon *Daemon) containerPause(container *container.Container) error {
container.Lock()
defer container.Unlock()
// We cannot Pause the container which is not running
if !container.Running {
return errNotRunning(container.ID)
}
// We cannot Pause the container which is already paused
if container.Paused {
return fmt.Errorf("Container %s is already paused", container.ID)
}
// We cannot Pause the container which is restarting
if container.Restarting {
return errContainerIsRestarting(container.ID)
}
if err := daemon.containerd.Pause(container.ID); err != nil {
return fmt.Errorf("Cannot pause container %s: %s", container.ID, err)
}
return nil
}
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