api: add sandbox pause and resume API

By exporting the existing sandbox operations.

Signed-off-by: Peng Tao <[email protected]>

virtcontainers/interfaces.go

@@ -46,6 +46,8 @@ type VCSandbox interface {
 	ID() string
 	SetAnnotations(annotations map[string]string) error
 
+	Pause() error
+	Resume() error
 	Release() error
 }
 

virtcontainers/pkg/vcmock/sandbox.go

@@ -54,3 +54,13 @@ func (p *Sandbox) GetContainer(containerID string) vc.VCContainer {
 func (p *Sandbox) Release() error {
 	return nil
 }
+
+// Pause implements the VCSandbox function of the same name.
+func (p *Sandbox) Pause() error {
+	return nil
+}
+
+// Resume implements the VCSandbox function of the same name.
+func (p *Sandbox) Resume() error {
+	return nil
+}

virtcontainers/sandbox.go

@@ -929,15 +929,17 @@ func (s *Sandbox) stop() error {
 	return s.setSandboxState(StateStopped)
 }
 
-func (s *Sandbox) pause() error {
+// Pause pauses the sandbox
+func (s *Sandbox) Pause() error {
 	if err := s.hypervisor.pauseSandbox(); err != nil {
 		return err
 	}
 
 	return s.pauseSetStates()
 }
 
-func (s *Sandbox) resume() error {
+// Resume resumes the sandbox
+func (s *Sandbox) Resume() error {
 	if err := s.hypervisor.resumeSandbox(); err != nil {
 		return err
 	}
@@ -1079,9 +1081,9 @@ func togglePauseSandbox(sandboxID string, pause bool) (*Sandbox, error) {
 	}
 
 	if pause {
-		err = p.pause()
+		err = p.Pause()
 	} else {
-		err = p.resume()
+		err = p.Resume()
 	}
 
 	if err != nil {