[#917] engine: Allow to detach shards

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

pkg/services/control/server/detach_shards.go

@@ -0,0 +1,37 @@
+package control
+
+import (
+	"context"
+	"errors"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/util/logicerr"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/control"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+func (s *Server) DetachShards(_ context.Context, req *control.DetachShardsRequest) (*control.DetachShardsResponse, error) {
+	err := s.isValidRequest(req)
+	if err != nil {
+		return nil, status.Error(codes.PermissionDenied, err.Error())
+	}
+
+	shardIDs := s.getShardIDList(req.GetBody().GetShard_ID())
+
+	if err := s.s.DetachShards(shardIDs); err != nil {
+		if errors.As(err, new(logicerr.Logical)) {
+			return nil, status.Error(codes.InvalidArgument, err.Error())
+		}
+		return nil, status.Error(codes.Internal, err.Error())
+	}
+
+	resp := &control.DetachShardsResponse{
+		Body: &control.DetachShardsResponse_Body{},
+	}
+
+	if err = SignMessage(s.key, resp); err != nil {
+		return nil, status.Error(codes.Internal, err.Error())
+	}
+
+	return resp, nil
+}