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moby--moby/daemon/pause.go
David Calavera 6bb0d1816a Move Container to its own package.
So other packages don't need to import the daemon package when they
want to use this struct.

Signed-off-by: David Calavera <david.calavera@gmail.com>
Signed-off-by: Tibor Vass <tibor@docker.com>
2015-12-03 17:39:49 +01:00

44 lines
1.1 KiB
Go

package daemon
import (
"github.com/docker/docker/container"
derr "github.com/docker/docker/errors"
)
// ContainerPause pauses a container
func (daemon *Daemon) ContainerPause(name string) error {
container, err := daemon.Get(name)
if err != nil {
return err
}
if err := daemon.containerPause(container); err != nil {
return derr.ErrorCodePauseError.WithArgs(name, 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 derr.ErrorCodeNotRunning.WithArgs(container.ID)
}
// We cannot Pause the container which is already paused
if container.Paused {
return derr.ErrorCodeAlreadyPaused.WithArgs(container.ID)
}
if err := daemon.execDriver.Pause(container.Command); err != nil {
return err
}
container.Paused = true
daemon.LogContainerEvent(container, "pause")
return nil
}