Move services to plugins/services

Signed-off-by: Derek McGowan <derek@mcg.dev>

plugins/services/version/service.go

@@ -0,0 +1,59 @@
+/*
+   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 version
+
+import (
+	"context"
+
+	api "github.com/containerd/containerd/v2/api/services/version/v1"
+	"github.com/containerd/containerd/v2/plugins"
+	ptypes "github.com/containerd/containerd/v2/protobuf/types"
+	ctrdversion "github.com/containerd/containerd/v2/version"
+	"github.com/containerd/plugin"
+	"github.com/containerd/plugin/registry"
+	"google.golang.org/grpc"
+)
+
+var _ api.VersionServer = &service{}
+
+func init() {
+	registry.Register(&plugin.Registration{
+		Type:   plugins.GRPCPlugin,
+		ID:     "version",
+		InitFn: initFunc,
+	})
+}
+
+func initFunc(ic *plugin.InitContext) (interface{}, error) {
+	return &service{}, nil
+}
+
+type service struct {
+	api.UnimplementedVersionServer
+}
+
+func (s *service) Register(server *grpc.Server) error {
+	api.RegisterVersionServer(server, s)
+	return nil
+}
+
+func (s *service) Version(ctx context.Context, _ *ptypes.Empty) (*api.VersionResponse, error) {
+	return &api.VersionResponse{
+		Version:  ctrdversion.Version,
+		Revision: ctrdversion.Revision,
+	}, nil
+}