Fix gVisor CRI setup in vHive orchestrator

gVisor CRI setup needs to be done in the same place as firecracker CRI
setup, otherwise setup parts such as logger setup and orchestrator creation
are skipped.

Closes firecracker-microvm#696

Signed-off-by: Georgiy Lebedev <lebedev.gk@phystech.edu>

Author: CuriousGeorgiy

vhive.go

@@ -33,13 +33,13 @@ import (
 	"runtime"
 
 	ctrdlog "github.com/containerd/containerd/log"
+	log "github.com/sirupsen/logrus"
 	"github.com/vhive-serverless/vhive/cri"
 	fccri "github.com/vhive-serverless/vhive/cri/firecracker"
 	gvcri "github.com/vhive-serverless/vhive/cri/gvisor"
 	ctriface "github.com/vhive-serverless/vhive/ctriface"
 	hpb "github.com/vhive-serverless/vhive/examples/protobuf/helloworld"
 	pb "github.com/vhive-serverless/vhive/proto"
-	log "github.com/sirupsen/logrus"
 	"google.golang.org/grpc"
 )
 
@@ -91,13 +91,6 @@ func main() {
 		return
 	}
 
-	if *sandbox == "gvisor" {
-		if err := setupGVisorCRI(); err != nil {
-			log.Fatalf("failed to setup GVisorCRI: %v", err)
-		}
-		return
-	}
-
 	if *isUPFEnabled && !*isSnapshotsEnabled {
 		log.Error("User-level page faults are not supported without snapshots")
 		return
@@ -132,23 +125,25 @@ func main() {
 		log.Info(fmt.Sprintf("Creating orchestrator for pinned=%d functions", *pinnedFuncNum))
 	}
 
-	testModeOn := false
-
-	orch = ctriface.NewOrchestrator(
-		*snapshotter,
-		*hostIface,
-		ctriface.WithTestModeOn(testModeOn),
-		ctriface.WithSnapshots(*isSnapshotsEnabled),
-		ctriface.WithUPF(*isUPFEnabled),
-		ctriface.WithMetricsMode(*isMetricsMode),
-		ctriface.WithLazyMode(*isLazyMode),
-	)
-
-	funcPool = NewFuncPool(*isSaveMemory, *servedThreshold, *pinnedFuncNum, testModeOn)
-
-	go setupFirecrackerCRI()
-	go orchServe()
-	fwdServe()
+	switch *sandbox {
+	case "firecracker":
+		testModeOn := false
+		orch = ctriface.NewOrchestrator(
+			*snapshotter,
+			*hostIface,
+			ctriface.WithTestModeOn(testModeOn),
+			ctriface.WithSnapshots(*isSnapshotsEnabled),
+			ctriface.WithUPF(*isUPFEnabled),
+			ctriface.WithMetricsMode(*isMetricsMode),
+			ctriface.WithLazyMode(*isLazyMode),
+		)
+		funcPool = NewFuncPool(*isSaveMemory, *servedThreshold, *pinnedFuncNum, testModeOn)
+		go setupFirecrackerCRI()
+		go orchServe()
+		fwdServe()
+	case "gvisor":
+		setupGVisorCRI()
+	}
 }
 
 type server struct {
@@ -265,28 +260,27 @@ func (s *fwdServer) FwdHello(ctx context.Context, in *hpb.FwdHelloReq) (*hpb.Fwd
 	return resp, err
 }
 
-func setupGVisorCRI() error {
+func setupGVisorCRI() {
 	lis, err := net.Listen("unix", *criSock)
 	if err != nil {
-		return fmt.Errorf("failed to listen: %v", err)
+		log.Fatalf("failed to listen: %v", err)
 	}
 
 	s := grpc.NewServer()
 
 	gvService, err := gvcri.NewGVisorService()
 	if err != nil {
-		return fmt.Errorf("failed to create firecracker service %v", err)
+		log.Fatalf("failed to create gVisor service %v", err)
 	}
 
 	criService, err := cri.NewService(gvService)
 	if err != nil {
-		return fmt.Errorf("failed to create CRI service %v", err)
+		log.Fatalf("failed to create CRI service %v", err)
 	}
 
 	criService.Register(s)
 
 	if err := s.Serve(lis); err != nil {
-		return fmt.Errorf("failed to serve: %v", err)
+		log.Fatalf("failed to serve: %v", err)
 	}
-	return nil
 }