runtime: remove global sandbox variable

Remove global sandbox variable, and save *Sandbox to hypervisor struct.
For some needs, hypervisor may need to use methods from Sandbox.

Signed-off-by: bin liu <bin@hyper.sh>

src/runtime/virtcontainers/api.go

@@ -7,6 +7,7 @@ package virtcontainers
 
 import (
 	"context"
+	"fmt"
 	"runtime"
 
 	deviceApi "github.com/kata-containers/kata-containers/src/runtime/virtcontainers/device/api"
@@ -135,26 +136,24 @@ func createSandboxFromConfig(ctx context.Context, sandboxConfig SandboxConfig, f
 // CleanupContainer is used by shimv2 to stop and delete a container exclusively, once there is no container
 // in the sandbox left, do stop the sandbox and delete it. Those serial operations will be done exclusively by
 // locking the sandbox.
-func CleanupContainer(ctx context.Context, sandboxID, containerID string, force bool) error {
+func CleanupContainer(ctx context.Context, sandbox VCSandbox, containerID string, force bool) error {
 	span, ctx := trace(ctx, "CleanupContainer")
 	defer span.Finish()
-
-	if sandboxID == "" {
-		return vcTypes.ErrNeedSandboxID
-	}
-
 	if containerID == "" {
 		return vcTypes.ErrNeedContainerID
 	}
 
-	unlock, err := rwLockSandbox(sandboxID)
+	s, ok := sandbox.(*Sandbox)
+	if !ok {
+		return fmt.Errorf("not a Sandbox reference")
+	}
+
+	unlock, err := rwLockSandbox(s.id)
 	if err != nil {
 		return err
 	}
 	defer unlock()
 
-	s := globalSandbox
-
 	defer s.Release()
 
 	_, err = s.StopContainer(containerID, force)