Move sandbox start behind controller

Signed-off-by: Maksym Pavlenko <pavlenko.maksym@gmail.com>

pkg/cri/sbserver/podsandbox/controller.go

@@ -0,0 +1,86 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package podsandbox
+
+import (
+	"context"
+
+	"github.com/containerd/containerd"
+	api "github.com/containerd/containerd/api/services/sandbox/v1"
+	"github.com/containerd/containerd/oci"
+	criconfig "github.com/containerd/containerd/pkg/cri/config"
+	imagestore "github.com/containerd/containerd/pkg/cri/store/image"
+	sandboxstore "github.com/containerd/containerd/pkg/cri/store/sandbox"
+	osinterface "github.com/containerd/containerd/pkg/os"
+	"github.com/containerd/containerd/sandbox"
+	runtime "k8s.io/cri-api/pkg/apis/runtime/v1"
+)
+
+// CRIService interface contains things required by controller, but not yet refactored from criService.
+// This will be removed in subsequent iterations.
+type CRIService interface {
+	EnsureImageExists(ctx context.Context, ref string, config *runtime.PodSandboxConfig) (*imagestore.Image, error)
+
+	StartSandboxExitMonitor(ctx context.Context, id string, pid uint32, exitCh <-chan containerd.ExitStatus) <-chan struct{}
+}
+
+type Controller struct {
+	// config contains all configurations.
+	config criconfig.Config
+	// client is an instance of the containerd client
+	client *containerd.Client
+	// sandboxStore stores all resources associated with sandboxes.
+	sandboxStore *sandboxstore.Store
+	// os is an interface for all required os operations.
+	os osinterface.OS
+	// cri is CRI service that provides missing gaps needed by controller.
+	cri CRIService
+	// baseOCISpecs contains cached OCI specs loaded via `Runtime.BaseRuntimeSpec`
+	baseOCISpecs map[string]*oci.Spec
+}
+
+func New(
+	config criconfig.Config,
+	client *containerd.Client,
+	sandboxStore *sandboxstore.Store,
+	os osinterface.OS,
+	cri CRIService,
+	baseOCISpecs map[string]*oci.Spec,
+) *Controller {
+	return &Controller{
+		config:       config,
+		client:       client,
+		sandboxStore: sandboxStore,
+		os:           os,
+		cri:          cri,
+		baseOCISpecs: baseOCISpecs,
+	}
+}
+
+var _ sandbox.Controller = (*Controller)(nil)
+
+func (c *Controller) Shutdown(ctx context.Context, sandboxID string) error {
+	panic("implement me")
+}
+
+func (c *Controller) Wait(ctx context.Context, sandboxID string) (*api.ControllerWaitResponse, error) {
+	panic("implement me")
+}
+
+func (c *Controller) Status(ctx context.Context, sandboxID string) (*api.ControllerStatusResponse, error) {
+	panic("implement me")
+}