Initial commit

vendor/github.com/hyperhq/hypercli/daemon/pause.go

@@ -0,0 +1,49 @@
+package daemon
+
+import (
+	"github.com/hyperhq/hypercli/container"
+	derr "github.com/hyperhq/hypercli/errors"
+)
+
+// 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 derr.ErrorCodeNotRunning.WithArgs(container.ID)
+	}
+
+	// We cannot Pause the container which is already paused
+	if container.Paused {
+		return derr.ErrorCodeAlreadyPaused.WithArgs(container.ID)
+	}
+
+	// We cannot Pause the container which is restarting
+	if container.Restarting {
+		return derr.ErrorCodeContainerRestarting.WithArgs(container.ID)
+	}
+
+	if err := daemon.execDriver.Pause(container.Command); err != nil {
+		return derr.ErrorCodeCantPause.WithArgs(container.ID, err)
+	}
+	container.Paused = true
+	daemon.LogContainerEvent(container, "pause")
+	return nil
+}