Show runtime handler in sandbox debug info.

Signed-off-by: Lantao Liu <lantaol@google.com>

pkg/server/container_status.go

@@ -113,7 +113,6 @@ type containerInfo struct {
 }
 
 // toCRIContainerInfo converts internal container object information to CRI container status response info map.
-// TODO(random-liu): Return error instead of logging.
 func toCRIContainerInfo(ctx context.Context, container containerstore.Container, verbose bool) (map[string]string, error) {
 	if !verbose {
 		return nil, nil

pkg/server/sandbox_run.go

@@ -77,6 +77,7 @@ func (c *criService) RunPodSandbox(ctx context.Context, r *runtime.RunPodSandbox
 			ID:             id,
 			Name:           name,
 			Config:         config,
+			RuntimeHandler: r.GetRuntimeHandler(),
 		},
 		sandboxstore.Status{
 			State: sandboxstore.StateUnknown,

pkg/server/sandbox_status.go

@@ -108,6 +108,7 @@ type sandboxInfo struct {
 	Image          string                    `json:"image"`
 	SnapshotKey    string                    `json:"snapshotKey"`
 	Snapshotter    string                    `json:"snapshotter"`
+	RuntimeHandler string                    `json:"runtimeHandler"`
 	Runtime        *criconfig.Runtime        `json:"runtime"`
 	Config         *runtime.PodSandboxConfig `json:"config"`
 	RuntimeSpec    *runtimespec.Spec         `json:"runtimeSpec"`
@@ -133,6 +134,7 @@ func toCRISandboxInfo(ctx context.Context, sandbox sandboxstore.Sandbox) (map[st
 
 	si := &sandboxInfo{
 		Pid:            sandbox.Status.Get().Pid,
+		RuntimeHandler: sandbox.RuntimeHandler,
 		Status:         string(processStatus),
 		Config:         sandbox.Config,
 	}

pkg/store/sandbox/metadata.go

@@ -54,6 +54,8 @@ type Metadata struct {
 	NetNSPath string
 	// IP of Pod if it is attached to non host network
 	IP string
+	// RuntimeHandler is the runtime handler name of the pod.
+	RuntimeHandler string
 }
 
 // MarshalJSON encodes Metadata into bytes in json format.