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package daemon // import "github.com/docker/docker/daemon"
import (
"context"
"fmt"
"github.com/containerd/log"
"github.com/docker/docker/api/types/events"
"github.com/docker/docker/container"
)
// ContainerUnpause unpauses a container
func (daemon *Daemon) ContainerUnpause(name string) error {
ctr, err := daemon.GetContainer(name)
if err != nil {
return err
}
return daemon.containerUnpause(ctr)
}
// containerUnpause resumes the container execution after the container is paused.
func (daemon *Daemon) containerUnpause(ctr *container.Container) error {
ctr.Lock()
defer ctr.Unlock()
// We cannot unpause the container which is not paused
if !ctr.Paused {
return fmt.Errorf("Container %s is not paused", ctr.ID)
}
tsk, err := ctr.GetRunningTask()
if err != nil {
return err
}
if err := tsk.Resume(context.Background()); err != nil {
return fmt.Errorf("Cannot unpause container %s: %s", ctr.ID, err)
}
ctr.Paused = false
daemon.setStateCounter(ctr)
daemon.updateHealthMonitor(ctr)
daemon.LogContainerEvent(ctr, events.ActionUnPause)
if err := ctr.CheckpointTo(context.WithoutCancel(context.TODO()), daemon.containersReplica); err != nil {
log.G(context.TODO()).WithError(err).Warn("could not save container to disk")
}
return nil
}
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