Add Sandbox service GRPC bridge

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

sandbox/bridge.go

@@ -0,0 +1,79 @@
+/*
+   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 sandbox
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/containerd/ttrpc"
+	"google.golang.org/grpc"
+
+	api "github.com/containerd/containerd/api/runtime/sandbox/v1"
+)
+
+// NewClient returns a new sandbox client that handles both GRPC and TTRPC clients.
+func NewClient(client interface{}) (api.TTRPCSandboxService, error) {
+	if ttrpcClient, ok := client.(*ttrpc.Client); ok {
+		return api.NewTTRPCSandboxClient(ttrpcClient), nil
+	}
+
+	if grpcClient, ok := client.(grpc.ClientConnInterface); ok {
+		client := api.NewSandboxClient(grpcClient)
+		return &grpcBridge{client}, nil
+	}
+
+	return nil, fmt.Errorf("unsupported client type %T", client)
+}
+
+type grpcBridge struct {
+	client api.SandboxClient
+}
+
+var _ api.TTRPCSandboxService = (*grpcBridge)(nil)
+
+func (g *grpcBridge) CreateSandbox(ctx context.Context, request *api.CreateSandboxRequest) (*api.CreateSandboxResponse, error) {
+	return g.client.CreateSandbox(ctx, request)
+}
+
+func (g *grpcBridge) StartSandbox(ctx context.Context, request *api.StartSandboxRequest) (*api.StartSandboxResponse, error) {
+	return g.client.StartSandbox(ctx, request)
+}
+
+func (g *grpcBridge) Platform(ctx context.Context, request *api.PlatformRequest) (*api.PlatformResponse, error) {
+	return g.client.Platform(ctx, request)
+}
+
+func (g *grpcBridge) StopSandbox(ctx context.Context, request *api.StopSandboxRequest) (*api.StopSandboxResponse, error) {
+	return g.client.StopSandbox(ctx, request)
+}
+
+func (g *grpcBridge) WaitSandbox(ctx context.Context, request *api.WaitSandboxRequest) (*api.WaitSandboxResponse, error) {
+	return g.client.WaitSandbox(ctx, request)
+}
+
+func (g *grpcBridge) SandboxStatus(ctx context.Context, request *api.SandboxStatusRequest) (*api.SandboxStatusResponse, error) {
+	return g.client.SandboxStatus(ctx, request)
+}
+
+func (g *grpcBridge) PingSandbox(ctx context.Context, request *api.PingRequest) (*api.PingResponse, error) {
+	return g.client.PingSandbox(ctx, request)
+}
+
+func (g *grpcBridge) ShutdownSandbox(ctx context.Context, request *api.ShutdownSandboxRequest) (*api.ShutdownSandboxResponse, error) {
+	return g.client.ShutdownSandbox(ctx, request)
+}