shimv2: use the runtime config file passed from containerd/cri

containerd/cri's different runtime handlers can pass different
config files to shimv2 by a generic runtime options, by this kata
can launch the pods using different VMM for different runtime handlers.

Fixes:kata-containers#1082

Signed-off-by: Fupan Li <lifupan@gmail.com>

Gopkg.toml

@@ -60,7 +60,7 @@
 
 [[constraint]]
   name = "github.com/containerd/cri-containerd"
-  revision = "3d382e2f5dabe3bae62ceb9ded56bdee847008ee"
+  revision = "4dd6735020f5596dd41738f8c4f5cb07fa804c5e"
 
 [[constraint]]
   name = "github.com/safchain/ethtool"

containerd-shim-v2/create.go

@@ -10,18 +10,21 @@ package containerdshim
 import (
 	"context"
 	"fmt"
-
+	"github.com/containerd/typeurl"
 	vc "github.com/kata-containers/runtime/virtcontainers"
 	"github.com/kata-containers/runtime/virtcontainers/pkg/oci"
+	"os"
 
 	taskAPI "github.com/containerd/containerd/runtime/v2/task"
 
 	"github.com/kata-containers/runtime/pkg/katautils"
 	"github.com/opencontainers/runtime-spec/specs-go"
+
+	_ "github.com/containerd/containerd/runtime/v2/runc/options"
+	crioption "github.com/containerd/cri-containerd/pkg/api/runtimeoptions/v1"
 )
 
-func create(ctx context.Context, s *service, r *taskAPI.CreateTaskRequest, netns string,
-	runtimeConfig *oci.RuntimeConfig) (*container, error) {
+func create(ctx context.Context, s *service, r *taskAPI.CreateTaskRequest, netns string) (*container, error) {
 
 	detach := !r.Terminal
 
@@ -66,8 +69,6 @@ func create(ctx context.Context, s *service, r *taskAPI.CreateTaskRequest, netns
 		}
 	}
 
-	katautils.HandleFactory(ctx, vci, runtimeConfig)
-
 	disableOutput := noNeedForOutput(detach, ociSpec.Process.Terminal)
 
 	switch containerType {
@@ -76,7 +77,13 @@ func create(ctx context.Context, s *service, r *taskAPI.CreateTaskRequest, netns
 			return nil, fmt.Errorf("cannot create another sandbox in sandbox: %s", s.sandbox.ID())
 		}
 
-		sandbox, _, err := katautils.CreateSandbox(ctx, vci, ociSpec, *runtimeConfig, r.ID, bundlePath, "", disableOutput, false, true)
+		_, err := loadRuntimeConfig(s, r)
+		if err != nil {
+			return nil, err
+		}
+
+		katautils.HandleFactory(ctx, vci, s.config)
+		sandbox, _, err := katautils.CreateSandbox(ctx, vci, ociSpec, *s.config, r.ID, bundlePath, "", disableOutput, false, true)
 		if err != nil {
 			return nil, err
 		}
@@ -100,3 +107,37 @@ func create(ctx context.Context, s *service, r *taskAPI.CreateTaskRequest, netns
 
 	return container, nil
 }
+
+func loadRuntimeConfig(s *service, r *taskAPI.CreateTaskRequest) (*oci.RuntimeConfig, error) {
+	var configPath string
+
+	if r.Options != nil {
+		v, err := typeurl.UnmarshalAny(r.Options)
+		if err != nil {
+			return nil, err
+		}
+		option, ok := v.(*crioption.Options)
+		// cri default runtime handler will pass a runc options,
+		// and we'll ignore it.
+		if ok {
+			configPath = option.ConfigPath
+		}
+	}
+
+	// Try to get the config file from the env KATA_CONF_FILE
+	if configPath == "" {
+		configPath = os.Getenv("KATA_CONF_FILE")
+	}
+
+	_, runtimeConfig, err := katautils.LoadConfiguration(configPath, false, true)
+	if err != nil {
+		return nil, err
+	}
+
+	// For the unit test, the config will be predefined
+	if s.config == nil {
+		s.config = &runtimeConfig
+	}
+
+	return &runtimeConfig, nil
+}

containerd-shim-v2/service.go

@@ -65,18 +65,10 @@ func New(ctx context.Context, id string, publisher events.Publisher) (cdshim.Shi
 	vci.SetLogger(ctx, logger)
 	katautils.SetLogger(ctx, logger, logger.Logger.Level)
 
-	// Try to get the config file from the env KATA_CONF_FILE
-	confPath := os.Getenv("KATA_CONF_FILE")
-	_, runtimeConfig, err := katautils.LoadConfiguration(confPath, false, true)
-	if err != nil {
-		return nil, err
-	}
-
 	s := &service{
 		id:         id,
 		pid:        uint32(os.Getpid()),
 		context:    ctx,
-		config:     &runtimeConfig,
 		containers: make(map[string]*container),
 		events:     make(chan interface{}, chSize),
 		ec:         make(chan exit, bufferSize),
@@ -327,7 +319,7 @@ func (s *service) Create(ctx context.Context, r *taskAPI.CreateTaskRequest) (_ *
 		}
 	}
 
-	container, err := create(ctx, s, r, netns, s.config)
+	container, err := create(ctx, s, r, netns)
 	if err != nil {
 		return nil, err
 	}