From 0a1cef610c08c338ac8511e2a6449fb52abe5cea Mon Sep 17 00:00:00 2001
From: Yury Frolov <yura200253@gmail.com>
Date: Tue, 29 Oct 2024 17:58:36 +0500
Subject: [PATCH 1/2] Refactor protospecs

---
 balancer/provider/balancer.go             |   6 +-
 cmd/coordctl/main.go                      |   4 +-
 cmd/spqrdump/main.go                      |   4 +-
 coordinator/provider/coordinator.go       |  20 +-
 coordinator/provider/distributions.go     |  20 +-
 coordinator/provider/keyranges.go         |   5 +-
 coordinator/provider/router.go            |  11 +-
 coordinator/provider/shards.go            |   9 +-
 coordinator/provider/tasks.go             |  12 +-
 coordinator/provider/topology.go          |   8 +-
 pkg/coord/adapter.go                      |  16 +-
 pkg/protos/backend_connections.pb.go      | 146 ++----
 pkg/protos/backend_connections_grpc.pb.go |  13 +-
 pkg/protos/clients.pb.go                  | 166 +++---
 pkg/protos/clients_grpc.pb.go             |  13 +-
 pkg/protos/coordinator.pb.go              | 511 +++----------------
 pkg/protos/coordinator_grpc.pb.go         |  63 +--
 pkg/protos/distribution.pb.go             | 587 ++++++----------------
 pkg/protos/distribution_grpc.pb.go        |  53 +-
 pkg/protos/key_range.pb.go                | 506 ++++++++-----------
 pkg/protos/key_range_grpc.pb.go           |  25 +-
 pkg/protos/pools.pb.go                    | 133 ++---
 pkg/protos/pools_grpc.pb.go               |  13 +-
 pkg/protos/router.pb.go                   | 314 +++---------
 pkg/protos/router_grpc.pb.go              |  33 +-
 pkg/protos/shard.pb.go                    | 244 +++------
 pkg/protos/shard_grpc.pb.go               |  33 +-
 pkg/protos/sharding_rules.pb.go           | 250 +++------
 pkg/protos/sharding_rules_grpc.pb.go      |  21 +-
 pkg/protos/tasks.pb.go                    | 363 +++----------
 pkg/protos/tasks_grpc.pb.go               |  37 +-
 protos/backend_connections.proto          |   8 +-
 protos/clients.proto                      |   8 +-
 protos/coordinator.proto                  |  25 +-
 protos/distribution.proto                 |  22 +-
 protos/key_range.proto                    |  11 +-
 protos/pools.proto                        |   7 +-
 protos/router.proto                       |  18 +-
 protos/shard.proto                        |  14 +-
 protos/sharding_rules.proto               |  11 +-
 protos/tasks.proto                        |  13 +-
 router/grpc/qrouter.go                    |  67 ++-
 yacc/console/lex.go                       |  18 +-
 43 files changed, 1197 insertions(+), 2664 deletions(-)

diff --git a/balancer/provider/balancer.go b/balancer/provider/balancer.go
index cc2b28797..e85e405be 100644
--- a/balancer/provider/balancer.go
+++ b/balancer/provider/balancer.go
@@ -608,7 +608,7 @@ func (b *BalancerImpl) getTasks(ctx context.Context, shardFrom *ShardMetrics, kr
 
 func (b *BalancerImpl) getCurrentTaskGroupFromQDB(ctx context.Context) (group *tasks.TaskGroup, err error) {
 	tasksService := protos.NewTasksServiceClient(b.coordinatorConn)
-	resp, err := tasksService.GetTaskGroup(ctx, &protos.GetTaskGroupRequest{})
+	resp, err := tasksService.GetTaskGroup(ctx, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -623,7 +623,7 @@ func (b *BalancerImpl) syncTaskGroupWithQDB(ctx context.Context, group *tasks.Ta
 
 func (b *BalancerImpl) removeTaskGroupFromQDB(ctx context.Context) error {
 	tasksService := protos.NewTasksServiceClient(b.coordinatorConn)
-	_, err := tasksService.RemoveTaskGroup(ctx, &protos.RemoveTaskGroupRequest{})
+	_, err := tasksService.RemoveTaskGroup(ctx, nil)
 	return err
 }
 
@@ -709,7 +709,7 @@ func (b *BalancerImpl) executeTasks(ctx context.Context, group *tasks.TaskGroup)
 func (b *BalancerImpl) updateKeyRanges(ctx context.Context) error {
 	keyRangeService := protos.NewKeyRangeServiceClient(b.coordinatorConn)
 	distrService := protos.NewDistributionServiceClient(b.coordinatorConn)
-	keyRangesProto, err := keyRangeService.ListAllKeyRanges(ctx, &protos.ListAllKeyRangesRequest{})
+	keyRangesProto, err := keyRangeService.ListAllKeyRanges(ctx, nil)
 	if err != nil {
 		return err
 	}
diff --git a/cmd/coordctl/main.go b/cmd/coordctl/main.go
index 18aa4c803..3096cf939 100644
--- a/cmd/coordctl/main.go
+++ b/cmd/coordctl/main.go
@@ -109,7 +109,7 @@ var listRouterCmd = &cobra.Command{
 		}
 
 		rCl := protos.NewRouterServiceClient(cc)
-		if resp, err := rCl.ListRouters(context.Background(), &protos.ListRoutersRequest{}); err == nil {
+		if resp, err := rCl.ListRouters(context.Background(), nil); err == nil {
 			fmt.Printf("-------------------------------------\n")
 			fmt.Printf("%d routers found\n", len(resp.Routers))
 
@@ -186,7 +186,7 @@ var listShardCmd = &cobra.Command{
 		}
 
 		rCl := protos.NewShardServiceClient(cc)
-		if resp, err := rCl.ListShards(context.Background(), &protos.ListShardsRequest{}); err == nil {
+		if resp, err := rCl.ListShards(context.Background(), nil); err == nil {
 			fmt.Printf("-------------------------------------\n")
 			fmt.Printf("%d shards found\n", len(resp.Shards))
 
diff --git a/cmd/spqrdump/main.go b/cmd/spqrdump/main.go
index f0d5a866d..7a2496b78 100644
--- a/cmd/spqrdump/main.go
+++ b/cmd/spqrdump/main.go
@@ -175,7 +175,7 @@ func DumpKeyRanges() error {
 
 	rCl := protos.NewKeyRangeServiceClient(cc)
 	dCl := protos.NewDistributionServiceClient(cc)
-	if keys, err := rCl.ListAllKeyRanges(context.Background(), &protos.ListAllKeyRangesRequest{}); err != nil {
+	if keys, err := rCl.ListAllKeyRanges(context.Background(), nil); err != nil {
 		spqrlog.Zero.Error().
 			Err(err).
 			Msg("failed to dump endpoint rules")
@@ -204,7 +204,7 @@ func DumpDistributions() error {
 	}
 
 	rCl := protos.NewDistributionServiceClient(cc)
-	if dss, err := rCl.ListDistributions(context.Background(), &protos.ListDistributionsRequest{}); err != nil {
+	if dss, err := rCl.ListDistributions(context.Background(), nil); err != nil {
 		spqrlog.Zero.Error().
 			Err(err).
 			Msg("failed to dump endpoint distributions")
diff --git a/coordinator/provider/coordinator.go b/coordinator/provider/coordinator.go
index 9685829ad..dce89c421 100644
--- a/coordinator/provider/coordinator.go
+++ b/coordinator/provider/coordinator.go
@@ -87,7 +87,7 @@ func (ci grpcConnectionIterator) ClientPoolForeach(cb func(client client.ClientI
 		rrClient := routerproto.NewClientInfoServiceClient(cc)
 
 		spqrlog.Zero.Debug().Msg("fetch clients with grpc")
-		resp, err := rrClient.ListClients(ctx, &routerproto.ListClientsRequest{})
+		resp, err := rrClient.ListClients(ctx, nil)
 		if err != nil {
 			spqrlog.Zero.Error().Msg("error fetching clients with grpc")
 			return err
@@ -128,7 +128,7 @@ func (ci grpcConnectionIterator) ForEach(cb func(sh shard.Shardinfo) error) erro
 		rrBackConn := routerproto.NewBackendConnectionsServiceClient(cc)
 
 		spqrlog.Zero.Debug().Msg("fetch clients with grpc")
-		resp, err := rrBackConn.ListBackendConnections(ctx, &routerproto.ListBackendConnectionsRequest{})
+		resp, err := rrBackConn.ListBackendConnections(ctx, nil)
 		if err != nil {
 			spqrlog.Zero.Error().Msg("error fetching clients with grpc")
 			return err
@@ -151,7 +151,7 @@ func (ci grpcConnectionIterator) ForEachPool(cb func(p pool.Pool) error) error {
 		rrBackConn := routerproto.NewPoolServiceClient(cc)
 
 		spqrlog.Zero.Debug().Msg("fetch pools with grpc")
-		resp, err := rrBackConn.ListPools(ctx, &routerproto.ListPoolsRequest{})
+		resp, err := rrBackConn.ListPools(ctx, nil)
 		if err != nil {
 			spqrlog.Zero.Error().Msg("error fetching pools with grpc")
 			return err
@@ -230,7 +230,7 @@ func (qc *qdbCoordinator) watchRouters(ctx context.Context) {
 
 				rrClient := routerproto.NewTopologyServiceClient(cc)
 
-				resp, err := rrClient.GetRouterStatus(ctx, &routerproto.GetRouterStatusRequest{})
+				resp, err := rrClient.GetRouterStatus(ctx, nil)
 				if err != nil {
 					return err
 				}
@@ -694,7 +694,7 @@ func (qc *qdbCoordinator) DropKeyRangeAll(ctx context.Context) error {
 
 	if err := qc.traverseRouters(ctx, func(cc *grpc.ClientConn) error {
 		cl := routerproto.NewKeyRangeServiceClient(cc)
-		resp, err := cl.DropAllKeyRanges(ctx, &routerproto.DropAllKeyRangesRequest{})
+		resp, err := cl.DropAllKeyRanges(ctx, nil)
 		spqrlog.Zero.Debug().Err(err).
 			Interface("response", resp).
 			Msg("drop key range response")
@@ -987,7 +987,7 @@ func (qc *qdbCoordinator) SyncRouterMetadata(ctx context.Context, qRouter *topol
 	if err != nil {
 		return err
 	}
-	resp, err := dsCl.ListDistributions(ctx, &routerproto.ListDistributionsRequest{})
+	resp, err := dsCl.ListDistributions(ctx, nil)
 	if err != nil {
 		return err
 	}
@@ -1021,7 +1021,7 @@ func (qc *qdbCoordinator) SyncRouterMetadata(ctx context.Context, qRouter *topol
 	if err != nil {
 		return err
 	}
-	if _, err = krClient.DropAllKeyRanges(ctx, &routerproto.DropAllKeyRangesRequest{}); err != nil {
+	if _, err = krClient.DropAllKeyRanges(ctx, nil); err != nil {
 		return err
 	}
 
@@ -1051,7 +1051,7 @@ func (qc *qdbCoordinator) SyncRouterMetadata(ctx context.Context, qRouter *topol
 		return err
 	}
 
-	if resp, err := rCl.OpenRouter(ctx, &routerproto.OpenRouterRequest{}); err != nil {
+	if resp, err := rCl.OpenRouter(ctx, nil); err != nil {
 		return err
 	} else {
 		spqrlog.Zero.Debug().
@@ -1084,7 +1084,7 @@ func (qc *qdbCoordinator) SyncRouterCoordinatorAddress(ctx context.Context, qRou
 		return err
 	}
 
-	if resp, err := rCl.OpenRouter(ctx, &routerproto.OpenRouterRequest{}); err != nil {
+	if resp, err := rCl.OpenRouter(ctx, nil); err != nil {
 		return err
 	} else {
 		spqrlog.Zero.Debug().
@@ -1110,7 +1110,7 @@ func (qc *qdbCoordinator) RegisterRouter(ctx context.Context, r *topology.Router
 	}
 	defer conn.Close()
 	cl := routerproto.NewTopologyServiceClient(conn)
-	_, err = cl.GetRouterStatus(ctx, &routerproto.GetRouterStatusRequest{})
+	_, err = cl.GetRouterStatus(ctx, nil)
 	if err != nil {
 		return spqrerror.Newf(spqrerror.SPQR_CONNECTION_ERROR, "failed to ping router: %s", err)
 	}
diff --git a/coordinator/provider/distributions.go b/coordinator/provider/distributions.go
index 5ca884ffb..e55146401 100644
--- a/coordinator/provider/distributions.go
+++ b/coordinator/provider/distributions.go
@@ -2,9 +2,11 @@ package provider
 
 import (
 	"context"
+
 	"github.com/pg-sharding/spqr/coordinator"
 	"github.com/pg-sharding/spqr/pkg/models/distributions"
 	protos "github.com/pg-sharding/spqr/pkg/protos"
+	"google.golang.org/protobuf/types/known/emptypb"
 )
 
 type DistributionsServer struct {
@@ -21,25 +23,25 @@ func NewDistributionServer(impl coordinator.Coordinator) *DistributionsServer {
 
 var _ protos.DistributionServiceServer = &DistributionsServer{}
 
-func (d *DistributionsServer) CreateDistribution(ctx context.Context, req *protos.CreateDistributionRequest) (*protos.CreateDistributionReply, error) {
+func (d *DistributionsServer) CreateDistribution(ctx context.Context, req *protos.CreateDistributionRequest) (*emptypb.Empty, error) {
 	for _, ds := range req.Distributions {
 		if err := d.impl.CreateDistribution(ctx, distributions.DistributionFromProto(ds)); err != nil {
 			return nil, err
 		}
 	}
-	return &protos.CreateDistributionReply{}, nil
+	return nil, nil
 }
 
-func (d *DistributionsServer) DropDistribution(ctx context.Context, req *protos.DropDistributionRequest) (*protos.DropDistributionReply, error) {
+func (d *DistributionsServer) DropDistribution(ctx context.Context, req *protos.DropDistributionRequest) (*emptypb.Empty, error) {
 	for _, id := range req.GetIds() {
 		if err := d.impl.DropDistribution(ctx, id); err != nil {
 			return nil, err
 		}
 	}
-	return &protos.DropDistributionReply{}, nil
+	return nil, nil
 }
 
-func (d *DistributionsServer) ListDistributions(ctx context.Context, req *protos.ListDistributionsRequest) (*protos.ListDistributionsReply, error) {
+func (d *DistributionsServer) ListDistributions(ctx context.Context, _ *emptypb.Empty) (*protos.ListDistributionsReply, error) {
 	dss, err := d.impl.ListDistributions(ctx)
 	if err != nil {
 		return nil, err
@@ -55,8 +57,8 @@ func (d *DistributionsServer) ListDistributions(ctx context.Context, req *protos
 	}, nil
 }
 
-func (d *DistributionsServer) AlterDistributionAttach(ctx context.Context, req *protos.AlterDistributionAttachRequest) (*protos.AlterDistributionAttachReply, error) {
-	return &protos.AlterDistributionAttachReply{}, d.impl.AlterDistributionAttach(ctx, req.GetId(), func() []*distributions.DistributedRelation {
+func (d *DistributionsServer) AlterDistributionAttach(ctx context.Context, req *protos.AlterDistributionAttachRequest) (*emptypb.Empty, error) {
+	return nil, d.impl.AlterDistributionAttach(ctx, req.GetId(), func() []*distributions.DistributedRelation {
 		res := make([]*distributions.DistributedRelation, len(req.GetRelations()))
 		for i, rel := range req.GetRelations() {
 			res[i] = distributions.DistributedRelationFromProto(rel)
@@ -65,13 +67,13 @@ func (d *DistributionsServer) AlterDistributionAttach(ctx context.Context, req *
 	}())
 }
 
-func (d *DistributionsServer) AlterDistributionDetach(ctx context.Context, req *protos.AlterDistributionDetachRequest) (*protos.AlterDistributionDetachReply, error) {
+func (d *DistributionsServer) AlterDistributionDetach(ctx context.Context, req *protos.AlterDistributionDetachRequest) (*emptypb.Empty, error) {
 	for _, rel := range req.GetRelNames() {
 		if err := d.impl.AlterDistributionDetach(ctx, req.GetId(), rel); err != nil {
 			return nil, err
 		}
 	}
-	return &protos.AlterDistributionDetachReply{}, nil
+	return nil, nil
 }
 
 func (d *DistributionsServer) GetDistribution(ctx context.Context, req *protos.GetDistributionRequest) (*protos.GetDistributionReply, error) {
diff --git a/coordinator/provider/keyranges.go b/coordinator/provider/keyranges.go
index eac497cec..062493c43 100644
--- a/coordinator/provider/keyranges.go
+++ b/coordinator/provider/keyranges.go
@@ -4,6 +4,7 @@ import (
 	"context"
 
 	"github.com/pg-sharding/spqr/pkg/models/spqrerror"
+	"google.golang.org/protobuf/types/known/emptypb"
 
 	"github.com/pg-sharding/spqr/coordinator"
 	"github.com/pg-sharding/spqr/pkg/models/kr"
@@ -17,7 +18,7 @@ type CoordinatorService struct {
 }
 
 // DropAllKeyRanges implements proto.KeyRangeServiceServer.
-func (c *CoordinatorService) DropAllKeyRanges(ctx context.Context, request *protos.DropAllKeyRangesRequest) (*protos.DropAllKeyRangesResponse, error) {
+func (c *CoordinatorService) DropAllKeyRanges(ctx context.Context, request *emptypb.Empty) (*protos.DropAllKeyRangesResponse, error) {
 	err := c.impl.DropKeyRangeAll(ctx)
 	if err != nil {
 		return nil, err
@@ -125,7 +126,7 @@ func (c *CoordinatorService) ListKeyRange(ctx context.Context, request *protos.L
 	}, nil
 }
 
-func (c *CoordinatorService) ListAllKeyRanges(ctx context.Context, _ *protos.ListAllKeyRangesRequest) (*protos.KeyRangeReply, error) {
+func (c *CoordinatorService) ListAllKeyRanges(ctx context.Context, _ *emptypb.Empty) (*protos.KeyRangeReply, error) {
 	krsDb, err := c.impl.ListAllKeyRanges(ctx)
 	if err != nil {
 		return nil, err
diff --git a/coordinator/provider/router.go b/coordinator/provider/router.go
index 7e6815d8d..0ef74704e 100644
--- a/coordinator/provider/router.go
+++ b/coordinator/provider/router.go
@@ -7,6 +7,7 @@ import (
 	"github.com/pg-sharding/spqr/pkg/models/topology"
 	protos "github.com/pg-sharding/spqr/pkg/protos"
 	"github.com/pg-sharding/spqr/pkg/spqrlog"
+	"google.golang.org/protobuf/types/known/emptypb"
 )
 
 type RouterService struct {
@@ -16,7 +17,7 @@ type RouterService struct {
 }
 
 // TODO : unit tests
-func (r RouterService) ListRouters(ctx context.Context, request *protos.ListRoutersRequest) (*protos.ListRoutersReply, error) {
+func (r RouterService) ListRouters(ctx context.Context, _ *emptypb.Empty) (*protos.ListRoutersReply, error) {
 	routers, err := r.impl.ListRouters(ctx)
 	if err != nil {
 		return nil, err
@@ -48,7 +49,7 @@ func (r RouterService) AddRouter(ctx context.Context, request *protos.AddRouterR
 }
 
 // TODO : unit tests
-func (r RouterService) RemoveRouter(ctx context.Context, request *protos.RemoveRouterRequest) (*protos.RemoveRouterReply, error) {
+func (r RouterService) RemoveRouter(ctx context.Context, request *protos.RemoveRouterRequest) (*emptypb.Empty, error) {
 	spqrlog.Zero.Debug().
 		Str("router-id", request.Id).
 		Msg("unregister router in coordinator")
@@ -56,11 +57,11 @@ func (r RouterService) RemoveRouter(ctx context.Context, request *protos.RemoveR
 	if err != nil {
 		return nil, err
 	}
-	return &protos.RemoveRouterReply{}, nil
+	return nil, nil
 }
 
 // TODO : unit tests
-func (r RouterService) SyncMetadata(ctx context.Context, request *protos.SyncMetadataRequest) (*protos.SyncMetadataReply, error) {
+func (r RouterService) SyncMetadata(ctx context.Context, request *protos.SyncMetadataRequest) (*emptypb.Empty, error) {
 	spqrlog.Zero.Debug().
 		Str("router-id", request.Router.Id).
 		Msg("sync router metadata in coordinator")
@@ -68,7 +69,7 @@ func (r RouterService) SyncMetadata(ctx context.Context, request *protos.SyncMet
 	if err != nil {
 		return nil, err
 	}
-	return &protos.SyncMetadataReply{}, nil
+	return nil, nil
 }
 
 var _ protos.RouterServiceServer = &RouterService{}
diff --git a/coordinator/provider/shards.go b/coordinator/provider/shards.go
index 42b3bf206..754ee4331 100644
--- a/coordinator/provider/shards.go
+++ b/coordinator/provider/shards.go
@@ -6,6 +6,7 @@ import (
 	routerproto "github.com/pg-sharding/spqr/pkg/protos"
 	"github.com/pg-sharding/spqr/pkg/shard"
 	"github.com/pg-sharding/spqr/pkg/txstatus"
+	"google.golang.org/protobuf/types/known/emptypb"
 
 	"github.com/pg-sharding/spqr/coordinator"
 	"github.com/pg-sharding/spqr/pkg/models/datashards"
@@ -27,23 +28,23 @@ func NewShardServer(impl coordinator.Coordinator) *ShardServer {
 var _ protos.ShardServiceServer = &ShardServer{}
 
 // TODO : unit tests
-func (s *ShardServer) AddDataShard(ctx context.Context, request *protos.AddShardRequest) (*protos.AddShardReply, error) {
+func (s *ShardServer) AddDataShard(ctx context.Context, request *protos.AddShardRequest) (*emptypb.Empty, error) {
 	newShard := request.GetShard()
 
 	if err := s.impl.AddDataShard(ctx, datashards.DataShardFromProto(newShard)); err != nil {
 		return nil, err
 	}
 
-	return &protos.AddShardReply{}, nil
+	return nil, nil
 }
 
-func (s *ShardServer) AddWorldShard(ctx context.Context, request *protos.AddWorldShardRequest) (*protos.AddShardReply, error) {
+func (s *ShardServer) AddWorldShard(ctx context.Context, request *protos.AddWorldShardRequest) (*emptypb.Empty, error) {
 	panic("implement me")
 }
 
 // TODO : unit tests
 // TODO: remove ShardRequest.
-func (s *ShardServer) ListShards(ctx context.Context, _ *protos.ListShardsRequest) (*protos.ListShardsReply, error) {
+func (s *ShardServer) ListShards(ctx context.Context, _ *emptypb.Empty) (*protos.ListShardsReply, error) {
 	shardList, err := s.impl.ListShards(ctx)
 	if err != nil {
 		return nil, err
diff --git a/coordinator/provider/tasks.go b/coordinator/provider/tasks.go
index af78c712a..3c7f12c49 100644
--- a/coordinator/provider/tasks.go
+++ b/coordinator/provider/tasks.go
@@ -2,9 +2,11 @@ package provider
 
 import (
 	"context"
+
 	"github.com/pg-sharding/spqr/coordinator"
 	"github.com/pg-sharding/spqr/pkg/models/tasks"
 	protos "github.com/pg-sharding/spqr/pkg/protos"
+	"google.golang.org/protobuf/types/known/emptypb"
 )
 
 type TasksServer struct {
@@ -21,7 +23,7 @@ func NewTasksServer(impl coordinator.Coordinator) *TasksServer {
 
 var _ protos.TasksServiceServer = &TasksServer{}
 
-func (t TasksServer) GetTaskGroup(ctx context.Context, _ *protos.GetTaskGroupRequest) (*protos.GetTaskGroupReply, error) {
+func (t TasksServer) GetTaskGroup(ctx context.Context, _ *emptypb.Empty) (*protos.GetTaskGroupReply, error) {
 	group, err := t.impl.GetTaskGroup(ctx)
 	if err != nil {
 		return nil, err
@@ -29,11 +31,11 @@ func (t TasksServer) GetTaskGroup(ctx context.Context, _ *protos.GetTaskGroupReq
 	return &protos.GetTaskGroupReply{TaskGroup: tasks.TaskGroupToProto(group)}, nil
 }
 
-func (t TasksServer) WriteTaskGroup(ctx context.Context, request *protos.WriteTaskGroupRequest) (*protos.WriteTaskGroupReply, error) {
+func (t TasksServer) WriteTaskGroup(ctx context.Context, request *protos.WriteTaskGroupRequest) (*emptypb.Empty, error) {
 	err := t.impl.WriteTaskGroup(ctx, tasks.TaskGroupFromProto(request.TaskGroup))
-	return &protos.WriteTaskGroupReply{}, err
+	return nil, err
 }
 
-func (t TasksServer) RemoveTaskGroup(ctx context.Context, _ *protos.RemoveTaskGroupRequest) (*protos.RemoveTaskGroupReply, error) {
-	return &protos.RemoveTaskGroupReply{}, t.impl.RemoveTaskGroup(ctx)
+func (t TasksServer) RemoveTaskGroup(ctx context.Context, _ *emptypb.Empty) (*emptypb.Empty, error) {
+	return nil, t.impl.RemoveTaskGroup(ctx)
 }
diff --git a/coordinator/provider/topology.go b/coordinator/provider/topology.go
index e6c4630a2..7dd7cd16a 100644
--- a/coordinator/provider/topology.go
+++ b/coordinator/provider/topology.go
@@ -2,7 +2,9 @@ package provider
 
 import (
 	"context"
+
 	"github.com/pg-sharding/spqr/pkg/models/spqrerror"
+	"google.golang.org/protobuf/types/known/emptypb"
 
 	"github.com/pg-sharding/spqr/coordinator"
 	protos "github.com/pg-sharding/spqr/pkg/protos"
@@ -15,17 +17,17 @@ type TopologyService struct {
 }
 
 // TODO : implement
-func (r *TopologyService) OpenRouter(ctx context.Context, request *protos.OpenRouterRequest) (*protos.OpenRouterReply, error) {
+func (r *TopologyService) OpenRouter(ctx context.Context, _ *emptypb.Empty) (*emptypb.Empty, error) {
 	return nil, spqrerror.New(spqrerror.SPQR_NOT_IMPLEMENTED, "OpenRouter method unimplemented")
 }
 
 // TODO : implement
-func (r *TopologyService) CloseRouter(ctx context.Context, request *protos.CloseRouterRequest) (*protos.CloseRouterReply, error) {
+func (r *TopologyService) CloseRouter(ctx context.Context, _ *emptypb.Empty) (*emptypb.Empty, error) {
 	return nil, spqrerror.New(spqrerror.SPQR_NOT_IMPLEMENTED, "CloseRouter method unimplemented")
 }
 
 // TODO : implement
-func (r *TopologyService) UpdateCoordinator(ctx context.Context, in *protos.UpdateCoordinatorRequest) (*protos.UpdateCoordinatorResponse, error) {
+func (r *TopologyService) UpdateCoordinator(ctx context.Context, in *protos.UpdateCoordinatorRequest) (*emptypb.Empty, error) {
 	return nil, spqrerror.New(spqrerror.SPQR_NOT_IMPLEMENTED, "UpdateCoordinator method unimplemented")
 }
 
diff --git a/pkg/coord/adapter.go b/pkg/coord/adapter.go
index 229cbe147..a6076dc1c 100644
--- a/pkg/coord/adapter.go
+++ b/pkg/coord/adapter.go
@@ -144,7 +144,7 @@ func (a *Adapter) ListKeyRanges(ctx context.Context, distribution string) ([]*kr
 // - error: An error if listing all key ranges was unsuccessful.
 func (a *Adapter) ListAllKeyRanges(ctx context.Context) ([]*kr.KeyRange, error) {
 	c := proto.NewKeyRangeServiceClient(a.conn)
-	reply, err := c.ListAllKeyRanges(ctx, &proto.ListAllKeyRangesRequest{})
+	reply, err := c.ListAllKeyRanges(ctx, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -386,7 +386,7 @@ func (a *Adapter) DropKeyRange(ctx context.Context, krid string) error {
 // - error: An error if the key range drop fails, otherwise nil.
 func (a *Adapter) DropKeyRangeAll(ctx context.Context) error {
 	c := proto.NewKeyRangeServiceClient(a.conn)
-	_, err := c.DropAllKeyRanges(ctx, &proto.DropAllKeyRangesRequest{})
+	_, err := c.DropAllKeyRanges(ctx, nil)
 	return err
 }
 
@@ -420,7 +420,7 @@ func (a *Adapter) RegisterRouter(ctx context.Context, r *topology.Router) error
 // - error: An error if listing routers fails, otherwise nil.
 func (a *Adapter) ListRouters(ctx context.Context) ([]*topology.Router, error) {
 	c := proto.NewRouterServiceClient(a.conn)
-	resp, err := c.ListRouters(ctx, &proto.ListRoutersRequest{})
+	resp, err := c.ListRouters(ctx, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -541,7 +541,7 @@ func (a *Adapter) AddWorldShard(ctx context.Context, shard *datashards.DataShard
 // - error: An error if the retrieval of shards fails, otherwise nil.
 func (a *Adapter) ListShards(ctx context.Context) ([]*datashards.DataShard, error) {
 	c := proto.NewShardServiceClient(a.conn)
-	resp, err := c.ListShards(ctx, &proto.ListShardsRequest{})
+	resp, err := c.ListShards(ctx, nil)
 	shards := resp.Shards
 	var ds []*datashards.DataShard
 	for _, shard := range shards {
@@ -586,7 +586,7 @@ func (a *Adapter) GetShard(ctx context.Context, shardID string) (*datashards.Dat
 func (a *Adapter) ListDistributions(ctx context.Context) ([]*distributions.Distribution, error) {
 	c := proto.NewDistributionServiceClient(a.conn)
 
-	resp, err := c.ListDistributions(ctx, &proto.ListDistributionsRequest{})
+	resp, err := c.ListDistributions(ctx, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -743,7 +743,7 @@ func (a *Adapter) GetRelationDistribution(ctx context.Context, id string) (*dist
 // - error: An error if the retrieval of the task group fails, otherwise nil.
 func (a *Adapter) GetTaskGroup(ctx context.Context) (*tasks.TaskGroup, error) {
 	tasksService := proto.NewTasksServiceClient(a.conn)
-	res, err := tasksService.GetTaskGroup(ctx, &proto.GetTaskGroupRequest{})
+	res, err := tasksService.GetTaskGroup(ctx, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -775,7 +775,7 @@ func (a *Adapter) WriteTaskGroup(ctx context.Context, taskGroup *tasks.TaskGroup
 // - error: An error if the removal of the task group fails, otherwise nil.
 func (a *Adapter) RemoveTaskGroup(ctx context.Context) error {
 	tasksService := proto.NewTasksServiceClient(a.conn)
-	_, err := tasksService.RemoveTaskGroup(ctx, &proto.RemoveTaskGroupRequest{})
+	_, err := tasksService.RemoveTaskGroup(ctx, nil)
 	return err
 }
 
@@ -807,6 +807,6 @@ func (a *Adapter) UpdateCoordinator(ctx context.Context, address string) error {
 // - error: An error if the retrieval operation fails, otherwise nil.
 func (a *Adapter) GetCoordinator(ctx context.Context) (string, error) {
 	c := proto.NewTopologyServiceClient(a.conn)
-	resp, err := c.GetCoordinator(ctx, &proto.GetCoordinatorRequest{})
+	resp, err := c.GetCoordinator(ctx, nil)
 	return resp.Address, err
 }
diff --git a/pkg/protos/backend_connections.pb.go b/pkg/protos/backend_connections.pb.go
index e56182b28..469d1e2e4 100644
--- a/pkg/protos/backend_connections.pb.go
+++ b/pkg/protos/backend_connections.pb.go
@@ -9,6 +9,7 @@ package proto
 import (
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 	reflect "reflect"
 	sync "sync"
 )
@@ -20,44 +21,6 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
-type ListBackendConnectionsRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *ListBackendConnectionsRequest) Reset() {
-	*x = ListBackendConnectionsRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_backend_connections_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *ListBackendConnectionsRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*ListBackendConnectionsRequest) ProtoMessage() {}
-
-func (x *ListBackendConnectionsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_backend_connections_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use ListBackendConnectionsRequest.ProtoReflect.Descriptor instead.
-func (*ListBackendConnectionsRequest) Descriptor() ([]byte, []int) {
-	return file_protos_backend_connections_proto_rawDescGZIP(), []int{0}
-}
-
 type ListBackendConntionsReply struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -69,7 +32,7 @@ type ListBackendConntionsReply struct {
 func (x *ListBackendConntionsReply) Reset() {
 	*x = ListBackendConntionsReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_backend_connections_proto_msgTypes[1]
+		mi := &file_protos_backend_connections_proto_msgTypes[0]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -82,7 +45,7 @@ func (x *ListBackendConntionsReply) String() string {
 func (*ListBackendConntionsReply) ProtoMessage() {}
 
 func (x *ListBackendConntionsReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_backend_connections_proto_msgTypes[1]
+	mi := &file_protos_backend_connections_proto_msgTypes[0]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -95,7 +58,7 @@ func (x *ListBackendConntionsReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListBackendConntionsReply.ProtoReflect.Descriptor instead.
 func (*ListBackendConntionsReply) Descriptor() ([]byte, []int) {
-	return file_protos_backend_connections_proto_rawDescGZIP(), []int{1}
+	return file_protos_backend_connections_proto_rawDescGZIP(), []int{0}
 }
 
 func (x *ListBackendConntionsReply) GetConns() []*BackendConnectionsInfo {
@@ -123,7 +86,7 @@ type BackendConnectionsInfo struct {
 func (x *BackendConnectionsInfo) Reset() {
 	*x = BackendConnectionsInfo{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_backend_connections_proto_msgTypes[2]
+		mi := &file_protos_backend_connections_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -136,7 +99,7 @@ func (x *BackendConnectionsInfo) String() string {
 func (*BackendConnectionsInfo) ProtoMessage() {}
 
 func (x *BackendConnectionsInfo) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_backend_connections_proto_msgTypes[2]
+	mi := &file_protos_backend_connections_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -149,7 +112,7 @@ func (x *BackendConnectionsInfo) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use BackendConnectionsInfo.ProtoReflect.Descriptor instead.
 func (*BackendConnectionsInfo) Descriptor() ([]byte, []int) {
-	return file_protos_backend_connections_proto_rawDescGZIP(), []int{2}
+	return file_protos_backend_connections_proto_rawDescGZIP(), []int{1}
 }
 
 func (x *BackendConnectionsInfo) GetBackendConnectionId() uint64 {
@@ -213,40 +176,39 @@ var File_protos_backend_connections_proto protoreflect.FileDescriptor
 var file_protos_backend_connections_proto_rawDesc = []byte{
 	0x0a, 0x20, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x73, 0x2f, 0x62, 0x61, 0x63, 0x6b, 0x65, 0x6e, 0x64,
 	0x5f, 0x63, 0x6f, 0x6e, 0x6e, 0x65, 0x63, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x70, 0x72, 0x6f,
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-	0x01, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x1c, 0x2e, 0x73, 0x70, 0x71, 0x72, 0x2e, 0x42, 0x61, 0x63,
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+	0x65, 0x6e, 0x64, 0x43, 0x6f, 0x6e, 0x6e, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x52, 0x65, 0x70, 0x6c,
+	0x79, 0x22, 0x00, 0x42, 0x0c, 0x5a, 0x0a, 0x73, 0x70, 0x71, 0x72, 0x2f, 0x70, 0x72, 0x6f, 0x74,
+	0x6f, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -261,16 +223,16 @@ func file_protos_backend_connections_proto_rawDescGZIP() []byte {
 	return file_protos_backend_connections_proto_rawDescData
 }
 
-var file_protos_backend_connections_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
+var file_protos_backend_connections_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
 var file_protos_backend_connections_proto_goTypes = []interface{}{
-	(*ListBackendConnectionsRequest)(nil), // 0: spqr.ListBackendConnectionsRequest
-	(*ListBackendConntionsReply)(nil),     // 1: spqr.ListBackendConntionsReply
-	(*BackendConnectionsInfo)(nil),        // 2: spqr.BackendConnectionsInfo
+	(*ListBackendConntionsReply)(nil), // 0: spqr.ListBackendConntionsReply
+	(*BackendConnectionsInfo)(nil),    // 1: spqr.BackendConnectionsInfo
+	(*emptypb.Empty)(nil),             // 2: google.protobuf.Empty
 }
 var file_protos_backend_connections_proto_depIdxs = []int32{
-	2, // 0: spqr.ListBackendConntionsReply.conns:type_name -> spqr.BackendConnectionsInfo
-	0, // 1: spqr.BackendConnectionsService.ListBackendConnections:input_type -> spqr.ListBackendConnectionsRequest
-	1, // 2: spqr.BackendConnectionsService.ListBackendConnections:output_type -> spqr.ListBackendConntionsReply
+	1, // 0: spqr.ListBackendConntionsReply.conns:type_name -> spqr.BackendConnectionsInfo
+	2, // 1: spqr.BackendConnectionsService.ListBackendConnections:input_type -> google.protobuf.Empty
+	0, // 2: spqr.BackendConnectionsService.ListBackendConnections:output_type -> spqr.ListBackendConntionsReply
 	2, // [2:3] is the sub-list for method output_type
 	1, // [1:2] is the sub-list for method input_type
 	1, // [1:1] is the sub-list for extension type_name
@@ -285,18 +247,6 @@ func file_protos_backend_connections_proto_init() {
 	}
 	if !protoimpl.UnsafeEnabled {
 		file_protos_backend_connections_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListBackendConnectionsRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_backend_connections_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ListBackendConntionsReply); i {
 			case 0:
 				return &v.state
@@ -308,7 +258,7 @@ func file_protos_backend_connections_proto_init() {
 				return nil
 			}
 		}
-		file_protos_backend_connections_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_backend_connections_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*BackendConnectionsInfo); i {
 			case 0:
 				return &v.state
@@ -327,7 +277,7 @@ func file_protos_backend_connections_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_protos_backend_connections_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   3,
+			NumMessages:   2,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/pkg/protos/backend_connections_grpc.pb.go b/pkg/protos/backend_connections_grpc.pb.go
index e0e57052f..9a580db0a 100644
--- a/pkg/protos/backend_connections_grpc.pb.go
+++ b/pkg/protos/backend_connections_grpc.pb.go
@@ -11,6 +11,7 @@ import (
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
 	status "google.golang.org/grpc/status"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 )
 
 // This is a compile-time assertion to ensure that this generated file
@@ -26,7 +27,7 @@ const (
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
 type BackendConnectionsServiceClient interface {
-	ListBackendConnections(ctx context.Context, in *ListBackendConnectionsRequest, opts ...grpc.CallOption) (*ListBackendConntionsReply, error)
+	ListBackendConnections(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*ListBackendConntionsReply, error)
 }
 
 type backendConnectionsServiceClient struct {
@@ -37,7 +38,7 @@ func NewBackendConnectionsServiceClient(cc grpc.ClientConnInterface) BackendConn
 	return &backendConnectionsServiceClient{cc}
 }
 
-func (c *backendConnectionsServiceClient) ListBackendConnections(ctx context.Context, in *ListBackendConnectionsRequest, opts ...grpc.CallOption) (*ListBackendConntionsReply, error) {
+func (c *backendConnectionsServiceClient) ListBackendConnections(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*ListBackendConntionsReply, error) {
 	out := new(ListBackendConntionsReply)
 	err := c.cc.Invoke(ctx, BackendConnectionsService_ListBackendConnections_FullMethodName, in, out, opts...)
 	if err != nil {
@@ -50,7 +51,7 @@ func (c *backendConnectionsServiceClient) ListBackendConnections(ctx context.Con
 // All implementations must embed UnimplementedBackendConnectionsServiceServer
 // for forward compatibility
 type BackendConnectionsServiceServer interface {
-	ListBackendConnections(context.Context, *ListBackendConnectionsRequest) (*ListBackendConntionsReply, error)
+	ListBackendConnections(context.Context, *emptypb.Empty) (*ListBackendConntionsReply, error)
 	mustEmbedUnimplementedBackendConnectionsServiceServer()
 }
 
@@ -58,7 +59,7 @@ type BackendConnectionsServiceServer interface {
 type UnimplementedBackendConnectionsServiceServer struct {
 }
 
-func (UnimplementedBackendConnectionsServiceServer) ListBackendConnections(context.Context, *ListBackendConnectionsRequest) (*ListBackendConntionsReply, error) {
+func (UnimplementedBackendConnectionsServiceServer) ListBackendConnections(context.Context, *emptypb.Empty) (*ListBackendConntionsReply, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ListBackendConnections not implemented")
 }
 func (UnimplementedBackendConnectionsServiceServer) mustEmbedUnimplementedBackendConnectionsServiceServer() {
@@ -76,7 +77,7 @@ func RegisterBackendConnectionsServiceServer(s grpc.ServiceRegistrar, srv Backen
 }
 
 func _BackendConnectionsService_ListBackendConnections_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(ListBackendConnectionsRequest)
+	in := new(emptypb.Empty)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
@@ -88,7 +89,7 @@ func _BackendConnectionsService_ListBackendConnections_Handler(srv interface{},
 		FullMethod: BackendConnectionsService_ListBackendConnections_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(BackendConnectionsServiceServer).ListBackendConnections(ctx, req.(*ListBackendConnectionsRequest))
+		return srv.(BackendConnectionsServiceServer).ListBackendConnections(ctx, req.(*emptypb.Empty))
 	}
 	return interceptor(ctx, in, info, handler)
 }
diff --git a/pkg/protos/clients.pb.go b/pkg/protos/clients.pb.go
index 9fc25c575..402cd1caf 100644
--- a/pkg/protos/clients.pb.go
+++ b/pkg/protos/clients.pb.go
@@ -9,6 +9,7 @@ package proto
 import (
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 	reflect "reflect"
 	sync "sync"
 )
@@ -20,44 +21,6 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
-type ListClientsRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *ListClientsRequest) Reset() {
-	*x = ListClientsRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_clients_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *ListClientsRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*ListClientsRequest) ProtoMessage() {}
-
-func (x *ListClientsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_clients_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use ListClientsRequest.ProtoReflect.Descriptor instead.
-func (*ListClientsRequest) Descriptor() ([]byte, []int) {
-	return file_protos_clients_proto_rawDescGZIP(), []int{0}
-}
-
 type ListClientsReply struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -69,7 +32,7 @@ type ListClientsReply struct {
 func (x *ListClientsReply) Reset() {
 	*x = ListClientsReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_clients_proto_msgTypes[1]
+		mi := &file_protos_clients_proto_msgTypes[0]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -82,7 +45,7 @@ func (x *ListClientsReply) String() string {
 func (*ListClientsReply) ProtoMessage() {}
 
 func (x *ListClientsReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_clients_proto_msgTypes[1]
+	mi := &file_protos_clients_proto_msgTypes[0]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -95,7 +58,7 @@ func (x *ListClientsReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListClientsReply.ProtoReflect.Descriptor instead.
 func (*ListClientsReply) Descriptor() ([]byte, []int) {
-	return file_protos_clients_proto_rawDescGZIP(), []int{1}
+	return file_protos_clients_proto_rawDescGZIP(), []int{0}
 }
 
 func (x *ListClientsReply) GetClients() []*ClientInfo {
@@ -120,7 +83,7 @@ type ClientInfo struct {
 func (x *ClientInfo) Reset() {
 	*x = ClientInfo{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_clients_proto_msgTypes[2]
+		mi := &file_protos_clients_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -133,7 +96,7 @@ func (x *ClientInfo) String() string {
 func (*ClientInfo) ProtoMessage() {}
 
 func (x *ClientInfo) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_clients_proto_msgTypes[2]
+	mi := &file_protos_clients_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -146,7 +109,7 @@ func (x *ClientInfo) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ClientInfo.ProtoReflect.Descriptor instead.
 func (*ClientInfo) Descriptor() ([]byte, []int) {
-	return file_protos_clients_proto_rawDescGZIP(), []int{2}
+	return file_protos_clients_proto_rawDescGZIP(), []int{1}
 }
 
 func (x *ClientInfo) GetClientId() uint64 {
@@ -195,7 +158,7 @@ type UsedShardInfo struct {
 func (x *UsedShardInfo) Reset() {
 	*x = UsedShardInfo{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_clients_proto_msgTypes[3]
+		mi := &file_protos_clients_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -208,7 +171,7 @@ func (x *UsedShardInfo) String() string {
 func (*UsedShardInfo) ProtoMessage() {}
 
 func (x *UsedShardInfo) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_clients_proto_msgTypes[3]
+	mi := &file_protos_clients_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -221,7 +184,7 @@ func (x *UsedShardInfo) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use UsedShardInfo.ProtoReflect.Descriptor instead.
 func (*UsedShardInfo) Descriptor() ([]byte, []int) {
-	return file_protos_clients_proto_rawDescGZIP(), []int{3}
+	return file_protos_clients_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *UsedShardInfo) GetInstance() *DBInstaceInfo {
@@ -242,7 +205,7 @@ type DBInstaceInfo struct {
 func (x *DBInstaceInfo) Reset() {
 	*x = DBInstaceInfo{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_clients_proto_msgTypes[4]
+		mi := &file_protos_clients_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -255,7 +218,7 @@ func (x *DBInstaceInfo) String() string {
 func (*DBInstaceInfo) ProtoMessage() {}
 
 func (x *DBInstaceInfo) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_clients_proto_msgTypes[4]
+	mi := &file_protos_clients_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -268,7 +231,7 @@ func (x *DBInstaceInfo) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DBInstaceInfo.ProtoReflect.Descriptor instead.
 func (*DBInstaceInfo) Descriptor() ([]byte, []int) {
-	return file_protos_clients_proto_rawDescGZIP(), []int{4}
+	return file_protos_clients_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *DBInstaceInfo) GetHostname() string {
@@ -282,36 +245,37 @@ var File_protos_clients_proto protoreflect.FileDescriptor
 
 var file_protos_clients_proto_rawDesc = []byte{
 	0x0a, 0x14, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x73, 0x2f, 0x63, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x73,
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+	0x72, 0x64, 0x73, 0x18, 0x05, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x13, 0x2e, 0x73, 0x70, 0x71, 0x72,
+	0x2e, 0x55, 0x73, 0x65, 0x64, 0x53, 0x68, 0x61, 0x72, 0x64, 0x49, 0x6e, 0x66, 0x6f, 0x52, 0x06,
+	0x73, 0x68, 0x61, 0x72, 0x64, 0x73, 0x22, 0x40, 0x0a, 0x0d, 0x55, 0x73, 0x65, 0x64, 0x53, 0x68,
+	0x61, 0x72, 0x64, 0x49, 0x6e, 0x66, 0x6f, 0x12, 0x2f, 0x0a, 0x08, 0x69, 0x6e, 0x73, 0x74, 0x61,
+	0x6e, 0x63, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x13, 0x2e, 0x73, 0x70, 0x71, 0x72,
+	0x2e, 0x44, 0x42, 0x49, 0x6e, 0x73, 0x74, 0x61, 0x63, 0x65, 0x49, 0x6e, 0x66, 0x6f, 0x52, 0x08,
+	0x69, 0x6e, 0x73, 0x74, 0x61, 0x6e, 0x63, 0x65, 0x22, 0x2b, 0x0a, 0x0d, 0x44, 0x42, 0x49, 0x6e,
+	0x73, 0x74, 0x61, 0x63, 0x65, 0x49, 0x6e, 0x66, 0x6f, 0x12, 0x1a, 0x0a, 0x08, 0x68, 0x6f, 0x73,
+	0x74, 0x6e, 0x61, 0x6d, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x08, 0x68, 0x6f, 0x73,
+	0x74, 0x6e, 0x61, 0x6d, 0x65, 0x32, 0x54, 0x0a, 0x11, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x49,
+	0x6e, 0x66, 0x6f, 0x53, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x12, 0x3f, 0x0a, 0x0b, 0x4c, 0x69,
+	0x73, 0x74, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x73, 0x12, 0x16, 0x2e, 0x67, 0x6f, 0x6f, 0x67,
+	0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x45, 0x6d, 0x70, 0x74,
+	0x79, 0x1a, 0x16, 0x2e, 0x73, 0x70, 0x71, 0x72, 0x2e, 0x4c, 0x69, 0x73, 0x74, 0x43, 0x6c, 0x69,
+	0x65, 0x6e, 0x74, 0x73, 0x52, 0x65, 0x70, 0x6c, 0x79, 0x22, 0x00, 0x42, 0x0c, 0x5a, 0x0a, 0x73,
+	0x70, 0x71, 0x72, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+	0x33,
 }
 
 var (
@@ -326,20 +290,20 @@ func file_protos_clients_proto_rawDescGZIP() []byte {
 	return file_protos_clients_proto_rawDescData
 }
 
-var file_protos_clients_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
+var file_protos_clients_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
 var file_protos_clients_proto_goTypes = []interface{}{
-	(*ListClientsRequest)(nil), // 0: spqr.ListClientsRequest
-	(*ListClientsReply)(nil),   // 1: spqr.ListClientsReply
-	(*ClientInfo)(nil),         // 2: spqr.ClientInfo
-	(*UsedShardInfo)(nil),      // 3: spqr.UsedShardInfo
-	(*DBInstaceInfo)(nil),      // 4: spqr.DBInstaceInfo
+	(*ListClientsReply)(nil), // 0: spqr.ListClientsReply
+	(*ClientInfo)(nil),       // 1: spqr.ClientInfo
+	(*UsedShardInfo)(nil),    // 2: spqr.UsedShardInfo
+	(*DBInstaceInfo)(nil),    // 3: spqr.DBInstaceInfo
+	(*emptypb.Empty)(nil),    // 4: google.protobuf.Empty
 }
 var file_protos_clients_proto_depIdxs = []int32{
-	2, // 0: spqr.ListClientsReply.clients:type_name -> spqr.ClientInfo
-	3, // 1: spqr.ClientInfo.shards:type_name -> spqr.UsedShardInfo
-	4, // 2: spqr.UsedShardInfo.instance:type_name -> spqr.DBInstaceInfo
-	0, // 3: spqr.ClientInfoService.ListClients:input_type -> spqr.ListClientsRequest
-	1, // 4: spqr.ClientInfoService.ListClients:output_type -> spqr.ListClientsReply
+	1, // 0: spqr.ListClientsReply.clients:type_name -> spqr.ClientInfo
+	2, // 1: spqr.ClientInfo.shards:type_name -> spqr.UsedShardInfo
+	3, // 2: spqr.UsedShardInfo.instance:type_name -> spqr.DBInstaceInfo
+	4, // 3: spqr.ClientInfoService.ListClients:input_type -> google.protobuf.Empty
+	0, // 4: spqr.ClientInfoService.ListClients:output_type -> spqr.ListClientsReply
 	4, // [4:5] is the sub-list for method output_type
 	3, // [3:4] is the sub-list for method input_type
 	3, // [3:3] is the sub-list for extension type_name
@@ -354,18 +318,6 @@ func file_protos_clients_proto_init() {
 	}
 	if !protoimpl.UnsafeEnabled {
 		file_protos_clients_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListClientsRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_clients_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ListClientsReply); i {
 			case 0:
 				return &v.state
@@ -377,7 +329,7 @@ func file_protos_clients_proto_init() {
 				return nil
 			}
 		}
-		file_protos_clients_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_clients_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ClientInfo); i {
 			case 0:
 				return &v.state
@@ -389,7 +341,7 @@ func file_protos_clients_proto_init() {
 				return nil
 			}
 		}
-		file_protos_clients_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_clients_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*UsedShardInfo); i {
 			case 0:
 				return &v.state
@@ -401,7 +353,7 @@ func file_protos_clients_proto_init() {
 				return nil
 			}
 		}
-		file_protos_clients_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_clients_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*DBInstaceInfo); i {
 			case 0:
 				return &v.state
@@ -420,7 +372,7 @@ func file_protos_clients_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_protos_clients_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   5,
+			NumMessages:   4,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/pkg/protos/clients_grpc.pb.go b/pkg/protos/clients_grpc.pb.go
index adfe60df6..6c62d27ff 100644
--- a/pkg/protos/clients_grpc.pb.go
+++ b/pkg/protos/clients_grpc.pb.go
@@ -11,6 +11,7 @@ import (
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
 	status "google.golang.org/grpc/status"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 )
 
 // This is a compile-time assertion to ensure that this generated file
@@ -26,7 +27,7 @@ const (
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
 type ClientInfoServiceClient interface {
-	ListClients(ctx context.Context, in *ListClientsRequest, opts ...grpc.CallOption) (*ListClientsReply, error)
+	ListClients(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*ListClientsReply, error)
 }
 
 type clientInfoServiceClient struct {
@@ -37,7 +38,7 @@ func NewClientInfoServiceClient(cc grpc.ClientConnInterface) ClientInfoServiceCl
 	return &clientInfoServiceClient{cc}
 }
 
-func (c *clientInfoServiceClient) ListClients(ctx context.Context, in *ListClientsRequest, opts ...grpc.CallOption) (*ListClientsReply, error) {
+func (c *clientInfoServiceClient) ListClients(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*ListClientsReply, error) {
 	out := new(ListClientsReply)
 	err := c.cc.Invoke(ctx, ClientInfoService_ListClients_FullMethodName, in, out, opts...)
 	if err != nil {
@@ -50,7 +51,7 @@ func (c *clientInfoServiceClient) ListClients(ctx context.Context, in *ListClien
 // All implementations must embed UnimplementedClientInfoServiceServer
 // for forward compatibility
 type ClientInfoServiceServer interface {
-	ListClients(context.Context, *ListClientsRequest) (*ListClientsReply, error)
+	ListClients(context.Context, *emptypb.Empty) (*ListClientsReply, error)
 	mustEmbedUnimplementedClientInfoServiceServer()
 }
 
@@ -58,7 +59,7 @@ type ClientInfoServiceServer interface {
 type UnimplementedClientInfoServiceServer struct {
 }
 
-func (UnimplementedClientInfoServiceServer) ListClients(context.Context, *ListClientsRequest) (*ListClientsReply, error) {
+func (UnimplementedClientInfoServiceServer) ListClients(context.Context, *emptypb.Empty) (*ListClientsReply, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ListClients not implemented")
 }
 func (UnimplementedClientInfoServiceServer) mustEmbedUnimplementedClientInfoServiceServer() {}
@@ -75,7 +76,7 @@ func RegisterClientInfoServiceServer(s grpc.ServiceRegistrar, srv ClientInfoServ
 }
 
 func _ClientInfoService_ListClients_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(ListClientsRequest)
+	in := new(emptypb.Empty)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
@@ -87,7 +88,7 @@ func _ClientInfoService_ListClients_Handler(srv interface{}, ctx context.Context
 		FullMethod: ClientInfoService_ListClients_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(ClientInfoServiceServer).ListClients(ctx, req.(*ListClientsRequest))
+		return srv.(ClientInfoServiceServer).ListClients(ctx, req.(*emptypb.Empty))
 	}
 	return interceptor(ctx, in, info, handler)
 }
diff --git a/pkg/protos/coordinator.pb.go b/pkg/protos/coordinator.pb.go
index 58ded64a5..66a91e49e 100644
--- a/pkg/protos/coordinator.pb.go
+++ b/pkg/protos/coordinator.pb.go
@@ -9,6 +9,7 @@ package proto
 import (
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 	reflect "reflect"
 	sync "sync"
 )
@@ -20,196 +21,6 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
-type OpenRouterRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *OpenRouterRequest) Reset() {
-	*x = OpenRouterRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_coordinator_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *OpenRouterRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*OpenRouterRequest) ProtoMessage() {}
-
-func (x *OpenRouterRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_coordinator_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use OpenRouterRequest.ProtoReflect.Descriptor instead.
-func (*OpenRouterRequest) Descriptor() ([]byte, []int) {
-	return file_protos_coordinator_proto_rawDescGZIP(), []int{0}
-}
-
-type OpenRouterReply struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *OpenRouterReply) Reset() {
-	*x = OpenRouterReply{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_coordinator_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *OpenRouterReply) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*OpenRouterReply) ProtoMessage() {}
-
-func (x *OpenRouterReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_coordinator_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use OpenRouterReply.ProtoReflect.Descriptor instead.
-func (*OpenRouterReply) Descriptor() ([]byte, []int) {
-	return file_protos_coordinator_proto_rawDescGZIP(), []int{1}
-}
-
-type CloseRouterRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *CloseRouterRequest) Reset() {
-	*x = CloseRouterRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_coordinator_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *CloseRouterRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*CloseRouterRequest) ProtoMessage() {}
-
-func (x *CloseRouterRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_coordinator_proto_msgTypes[2]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use CloseRouterRequest.ProtoReflect.Descriptor instead.
-func (*CloseRouterRequest) Descriptor() ([]byte, []int) {
-	return file_protos_coordinator_proto_rawDescGZIP(), []int{2}
-}
-
-type CloseRouterReply struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *CloseRouterReply) Reset() {
-	*x = CloseRouterReply{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_coordinator_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *CloseRouterReply) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*CloseRouterReply) ProtoMessage() {}
-
-func (x *CloseRouterReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_coordinator_proto_msgTypes[3]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use CloseRouterReply.ProtoReflect.Descriptor instead.
-func (*CloseRouterReply) Descriptor() ([]byte, []int) {
-	return file_protos_coordinator_proto_rawDescGZIP(), []int{3}
-}
-
-type GetRouterStatusRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *GetRouterStatusRequest) Reset() {
-	*x = GetRouterStatusRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_coordinator_proto_msgTypes[4]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *GetRouterStatusRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*GetRouterStatusRequest) ProtoMessage() {}
-
-func (x *GetRouterStatusRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_coordinator_proto_msgTypes[4]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use GetRouterStatusRequest.ProtoReflect.Descriptor instead.
-func (*GetRouterStatusRequest) Descriptor() ([]byte, []int) {
-	return file_protos_coordinator_proto_rawDescGZIP(), []int{4}
-}
-
 type GetRouterStatusReply struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -221,7 +32,7 @@ type GetRouterStatusReply struct {
 func (x *GetRouterStatusReply) Reset() {
 	*x = GetRouterStatusReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_coordinator_proto_msgTypes[5]
+		mi := &file_protos_coordinator_proto_msgTypes[0]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -234,7 +45,7 @@ func (x *GetRouterStatusReply) String() string {
 func (*GetRouterStatusReply) ProtoMessage() {}
 
 func (x *GetRouterStatusReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_coordinator_proto_msgTypes[5]
+	mi := &file_protos_coordinator_proto_msgTypes[0]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -247,7 +58,7 @@ func (x *GetRouterStatusReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetRouterStatusReply.ProtoReflect.Descriptor instead.
 func (*GetRouterStatusReply) Descriptor() ([]byte, []int) {
-	return file_protos_coordinator_proto_rawDescGZIP(), []int{5}
+	return file_protos_coordinator_proto_rawDescGZIP(), []int{0}
 }
 
 func (x *GetRouterStatusReply) GetStatus() RouterStatus {
@@ -268,7 +79,7 @@ type UpdateCoordinatorRequest struct {
 func (x *UpdateCoordinatorRequest) Reset() {
 	*x = UpdateCoordinatorRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_coordinator_proto_msgTypes[6]
+		mi := &file_protos_coordinator_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -281,7 +92,7 @@ func (x *UpdateCoordinatorRequest) String() string {
 func (*UpdateCoordinatorRequest) ProtoMessage() {}
 
 func (x *UpdateCoordinatorRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_coordinator_proto_msgTypes[6]
+	mi := &file_protos_coordinator_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -294,7 +105,7 @@ func (x *UpdateCoordinatorRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use UpdateCoordinatorRequest.ProtoReflect.Descriptor instead.
 func (*UpdateCoordinatorRequest) Descriptor() ([]byte, []int) {
-	return file_protos_coordinator_proto_rawDescGZIP(), []int{6}
+	return file_protos_coordinator_proto_rawDescGZIP(), []int{1}
 }
 
 func (x *UpdateCoordinatorRequest) GetAddress() string {
@@ -304,82 +115,6 @@ func (x *UpdateCoordinatorRequest) GetAddress() string {
 	return ""
 }
 
-type UpdateCoordinatorResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *UpdateCoordinatorResponse) Reset() {
-	*x = UpdateCoordinatorResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_coordinator_proto_msgTypes[7]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *UpdateCoordinatorResponse) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*UpdateCoordinatorResponse) ProtoMessage() {}
-
-func (x *UpdateCoordinatorResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_coordinator_proto_msgTypes[7]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use UpdateCoordinatorResponse.ProtoReflect.Descriptor instead.
-func (*UpdateCoordinatorResponse) Descriptor() ([]byte, []int) {
-	return file_protos_coordinator_proto_rawDescGZIP(), []int{7}
-}
-
-type GetCoordinatorRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *GetCoordinatorRequest) Reset() {
-	*x = GetCoordinatorRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_coordinator_proto_msgTypes[8]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *GetCoordinatorRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*GetCoordinatorRequest) ProtoMessage() {}
-
-func (x *GetCoordinatorRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_coordinator_proto_msgTypes[8]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use GetCoordinatorRequest.ProtoReflect.Descriptor instead.
-func (*GetCoordinatorRequest) Descriptor() ([]byte, []int) {
-	return file_protos_coordinator_proto_rawDescGZIP(), []int{8}
-}
-
 type GetCoordinatorResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -391,7 +126,7 @@ type GetCoordinatorResponse struct {
 func (x *GetCoordinatorResponse) Reset() {
 	*x = GetCoordinatorResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_coordinator_proto_msgTypes[9]
+		mi := &file_protos_coordinator_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -404,7 +139,7 @@ func (x *GetCoordinatorResponse) String() string {
 func (*GetCoordinatorResponse) ProtoMessage() {}
 
 func (x *GetCoordinatorResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_coordinator_proto_msgTypes[9]
+	mi := &file_protos_coordinator_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -417,7 +152,7 @@ func (x *GetCoordinatorResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetCoordinatorResponse.ProtoReflect.Descriptor instead.
 func (*GetCoordinatorResponse) Descriptor() ([]byte, []int) {
-	return file_protos_coordinator_proto_rawDescGZIP(), []int{9}
+	return file_protos_coordinator_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *GetCoordinatorResponse) GetAddress() string {
@@ -432,55 +167,45 @@ var File_protos_coordinator_proto protoreflect.FileDescriptor
 var file_protos_coordinator_proto_rawDesc = []byte{
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 }
 
 var (
@@ -495,37 +220,31 @@ func file_protos_coordinator_proto_rawDescGZIP() []byte {
 	return file_protos_coordinator_proto_rawDescData
 }
 
-var file_protos_coordinator_proto_msgTypes = make([]protoimpl.MessageInfo, 10)
+var file_protos_coordinator_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
 var file_protos_coordinator_proto_goTypes = []interface{}{
-	(*OpenRouterRequest)(nil),         // 0: spqr.OpenRouterRequest
-	(*OpenRouterReply)(nil),           // 1: spqr.OpenRouterReply
-	(*CloseRouterRequest)(nil),        // 2: spqr.CloseRouterRequest
-	(*CloseRouterReply)(nil),          // 3: spqr.CloseRouterReply
-	(*GetRouterStatusRequest)(nil),    // 4: spqr.GetRouterStatusRequest
-	(*GetRouterStatusReply)(nil),      // 5: spqr.GetRouterStatusReply
-	(*UpdateCoordinatorRequest)(nil),  // 6: spqr.UpdateCoordinatorRequest
-	(*UpdateCoordinatorResponse)(nil), // 7: spqr.UpdateCoordinatorResponse
-	(*GetCoordinatorRequest)(nil),     // 8: spqr.GetCoordinatorRequest
-	(*GetCoordinatorResponse)(nil),    // 9: spqr.GetCoordinatorResponse
-	(RouterStatus)(0),                 // 10: spqr.RouterStatus
+	(*GetRouterStatusReply)(nil),     // 0: spqr.GetRouterStatusReply
+	(*UpdateCoordinatorRequest)(nil), // 1: spqr.UpdateCoordinatorRequest
+	(*GetCoordinatorResponse)(nil),   // 2: spqr.GetCoordinatorResponse
+	(RouterStatus)(0),                // 3: spqr.RouterStatus
+	(*emptypb.Empty)(nil),            // 4: google.protobuf.Empty
 }
 var file_protos_coordinator_proto_depIdxs = []int32{
-	10, // 0: spqr.GetRouterStatusReply.status:type_name -> spqr.RouterStatus
-	0,  // 1: spqr.TopologyService.OpenRouter:input_type -> spqr.OpenRouterRequest
-	4,  // 2: spqr.TopologyService.GetRouterStatus:input_type -> spqr.GetRouterStatusRequest
-	2,  // 3: spqr.TopologyService.CloseRouter:input_type -> spqr.CloseRouterRequest
-	6,  // 4: spqr.TopologyService.UpdateCoordinator:input_type -> spqr.UpdateCoordinatorRequest
-	8,  // 5: spqr.TopologyService.GetCoordinator:input_type -> spqr.GetCoordinatorRequest
-	1,  // 6: spqr.TopologyService.OpenRouter:output_type -> spqr.OpenRouterReply
-	5,  // 7: spqr.TopologyService.GetRouterStatus:output_type -> spqr.GetRouterStatusReply
-	3,  // 8: spqr.TopologyService.CloseRouter:output_type -> spqr.CloseRouterReply
-	7,  // 9: spqr.TopologyService.UpdateCoordinator:output_type -> spqr.UpdateCoordinatorResponse
-	9,  // 10: spqr.TopologyService.GetCoordinator:output_type -> spqr.GetCoordinatorResponse
-	6,  // [6:11] is the sub-list for method output_type
-	1,  // [1:6] is the sub-list for method input_type
-	1,  // [1:1] is the sub-list for extension type_name
-	1,  // [1:1] is the sub-list for extension extendee
-	0,  // [0:1] is the sub-list for field type_name
+	3, // 0: spqr.GetRouterStatusReply.status:type_name -> spqr.RouterStatus
+	4, // 1: spqr.TopologyService.OpenRouter:input_type -> google.protobuf.Empty
+	4, // 2: spqr.TopologyService.GetRouterStatus:input_type -> google.protobuf.Empty
+	4, // 3: spqr.TopologyService.CloseRouter:input_type -> google.protobuf.Empty
+	1, // 4: spqr.TopologyService.UpdateCoordinator:input_type -> spqr.UpdateCoordinatorRequest
+	4, // 5: spqr.TopologyService.GetCoordinator:input_type -> google.protobuf.Empty
+	4, // 6: spqr.TopologyService.OpenRouter:output_type -> google.protobuf.Empty
+	0, // 7: spqr.TopologyService.GetRouterStatus:output_type -> spqr.GetRouterStatusReply
+	4, // 8: spqr.TopologyService.CloseRouter:output_type -> google.protobuf.Empty
+	4, // 9: spqr.TopologyService.UpdateCoordinator:output_type -> google.protobuf.Empty
+	2, // 10: spqr.TopologyService.GetCoordinator:output_type -> spqr.GetCoordinatorResponse
+	6, // [6:11] is the sub-list for method output_type
+	1, // [1:6] is the sub-list for method input_type
+	1, // [1:1] is the sub-list for extension type_name
+	1, // [1:1] is the sub-list for extension extendee
+	0, // [0:1] is the sub-list for field type_name
 }
 
 func init() { file_protos_coordinator_proto_init() }
@@ -536,66 +255,6 @@ func file_protos_coordinator_proto_init() {
 	file_protos_router_proto_init()
 	if !protoimpl.UnsafeEnabled {
 		file_protos_coordinator_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*OpenRouterRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_coordinator_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*OpenRouterReply); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_coordinator_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CloseRouterRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_coordinator_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CloseRouterReply); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_coordinator_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetRouterStatusRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_coordinator_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetRouterStatusReply); i {
 			case 0:
 				return &v.state
@@ -607,7 +266,7 @@ func file_protos_coordinator_proto_init() {
 				return nil
 			}
 		}
-		file_protos_coordinator_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_coordinator_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*UpdateCoordinatorRequest); i {
 			case 0:
 				return &v.state
@@ -619,31 +278,7 @@ func file_protos_coordinator_proto_init() {
 				return nil
 			}
 		}
-		file_protos_coordinator_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*UpdateCoordinatorResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_coordinator_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetCoordinatorRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_coordinator_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_coordinator_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetCoordinatorResponse); i {
 			case 0:
 				return &v.state
@@ -662,7 +297,7 @@ func file_protos_coordinator_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_protos_coordinator_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   10,
+			NumMessages:   3,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/pkg/protos/coordinator_grpc.pb.go b/pkg/protos/coordinator_grpc.pb.go
index 746c6c83c..5428961cd 100644
--- a/pkg/protos/coordinator_grpc.pb.go
+++ b/pkg/protos/coordinator_grpc.pb.go
@@ -11,6 +11,7 @@ import (
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
 	status "google.golang.org/grpc/status"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 )
 
 // This is a compile-time assertion to ensure that this generated file
@@ -30,11 +31,11 @@ const (
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
 type TopologyServiceClient interface {
-	OpenRouter(ctx context.Context, in *OpenRouterRequest, opts ...grpc.CallOption) (*OpenRouterReply, error)
-	GetRouterStatus(ctx context.Context, in *GetRouterStatusRequest, opts ...grpc.CallOption) (*GetRouterStatusReply, error)
-	CloseRouter(ctx context.Context, in *CloseRouterRequest, opts ...grpc.CallOption) (*CloseRouterReply, error)
-	UpdateCoordinator(ctx context.Context, in *UpdateCoordinatorRequest, opts ...grpc.CallOption) (*UpdateCoordinatorResponse, error)
-	GetCoordinator(ctx context.Context, in *GetCoordinatorRequest, opts ...grpc.CallOption) (*GetCoordinatorResponse, error)
+	OpenRouter(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*emptypb.Empty, error)
+	GetRouterStatus(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*GetRouterStatusReply, error)
+	CloseRouter(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*emptypb.Empty, error)
+	UpdateCoordinator(ctx context.Context, in *UpdateCoordinatorRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
+	GetCoordinator(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*GetCoordinatorResponse, error)
 }
 
 type topologyServiceClient struct {
@@ -45,8 +46,8 @@ func NewTopologyServiceClient(cc grpc.ClientConnInterface) TopologyServiceClient
 	return &topologyServiceClient{cc}
 }
 
-func (c *topologyServiceClient) OpenRouter(ctx context.Context, in *OpenRouterRequest, opts ...grpc.CallOption) (*OpenRouterReply, error) {
-	out := new(OpenRouterReply)
+func (c *topologyServiceClient) OpenRouter(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
 	err := c.cc.Invoke(ctx, TopologyService_OpenRouter_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
@@ -54,7 +55,7 @@ func (c *topologyServiceClient) OpenRouter(ctx context.Context, in *OpenRouterRe
 	return out, nil
 }
 
-func (c *topologyServiceClient) GetRouterStatus(ctx context.Context, in *GetRouterStatusRequest, opts ...grpc.CallOption) (*GetRouterStatusReply, error) {
+func (c *topologyServiceClient) GetRouterStatus(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*GetRouterStatusReply, error) {
 	out := new(GetRouterStatusReply)
 	err := c.cc.Invoke(ctx, TopologyService_GetRouterStatus_FullMethodName, in, out, opts...)
 	if err != nil {
@@ -63,8 +64,8 @@ func (c *topologyServiceClient) GetRouterStatus(ctx context.Context, in *GetRout
 	return out, nil
 }
 
-func (c *topologyServiceClient) CloseRouter(ctx context.Context, in *CloseRouterRequest, opts ...grpc.CallOption) (*CloseRouterReply, error) {
-	out := new(CloseRouterReply)
+func (c *topologyServiceClient) CloseRouter(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
 	err := c.cc.Invoke(ctx, TopologyService_CloseRouter_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
@@ -72,8 +73,8 @@ func (c *topologyServiceClient) CloseRouter(ctx context.Context, in *CloseRouter
 	return out, nil
 }
 
-func (c *topologyServiceClient) UpdateCoordinator(ctx context.Context, in *UpdateCoordinatorRequest, opts ...grpc.CallOption) (*UpdateCoordinatorResponse, error) {
-	out := new(UpdateCoordinatorResponse)
+func (c *topologyServiceClient) UpdateCoordinator(ctx context.Context, in *UpdateCoordinatorRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
 	err := c.cc.Invoke(ctx, TopologyService_UpdateCoordinator_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
@@ -81,7 +82,7 @@ func (c *topologyServiceClient) UpdateCoordinator(ctx context.Context, in *Updat
 	return out, nil
 }
 
-func (c *topologyServiceClient) GetCoordinator(ctx context.Context, in *GetCoordinatorRequest, opts ...grpc.CallOption) (*GetCoordinatorResponse, error) {
+func (c *topologyServiceClient) GetCoordinator(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*GetCoordinatorResponse, error) {
 	out := new(GetCoordinatorResponse)
 	err := c.cc.Invoke(ctx, TopologyService_GetCoordinator_FullMethodName, in, out, opts...)
 	if err != nil {
@@ -94,11 +95,11 @@ func (c *topologyServiceClient) GetCoordinator(ctx context.Context, in *GetCoord
 // All implementations must embed UnimplementedTopologyServiceServer
 // for forward compatibility
 type TopologyServiceServer interface {
-	OpenRouter(context.Context, *OpenRouterRequest) (*OpenRouterReply, error)
-	GetRouterStatus(context.Context, *GetRouterStatusRequest) (*GetRouterStatusReply, error)
-	CloseRouter(context.Context, *CloseRouterRequest) (*CloseRouterReply, error)
-	UpdateCoordinator(context.Context, *UpdateCoordinatorRequest) (*UpdateCoordinatorResponse, error)
-	GetCoordinator(context.Context, *GetCoordinatorRequest) (*GetCoordinatorResponse, error)
+	OpenRouter(context.Context, *emptypb.Empty) (*emptypb.Empty, error)
+	GetRouterStatus(context.Context, *emptypb.Empty) (*GetRouterStatusReply, error)
+	CloseRouter(context.Context, *emptypb.Empty) (*emptypb.Empty, error)
+	UpdateCoordinator(context.Context, *UpdateCoordinatorRequest) (*emptypb.Empty, error)
+	GetCoordinator(context.Context, *emptypb.Empty) (*GetCoordinatorResponse, error)
 	mustEmbedUnimplementedTopologyServiceServer()
 }
 
@@ -106,19 +107,19 @@ type TopologyServiceServer interface {
 type UnimplementedTopologyServiceServer struct {
 }
 
-func (UnimplementedTopologyServiceServer) OpenRouter(context.Context, *OpenRouterRequest) (*OpenRouterReply, error) {
+func (UnimplementedTopologyServiceServer) OpenRouter(context.Context, *emptypb.Empty) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method OpenRouter not implemented")
 }
-func (UnimplementedTopologyServiceServer) GetRouterStatus(context.Context, *GetRouterStatusRequest) (*GetRouterStatusReply, error) {
+func (UnimplementedTopologyServiceServer) GetRouterStatus(context.Context, *emptypb.Empty) (*GetRouterStatusReply, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method GetRouterStatus not implemented")
 }
-func (UnimplementedTopologyServiceServer) CloseRouter(context.Context, *CloseRouterRequest) (*CloseRouterReply, error) {
+func (UnimplementedTopologyServiceServer) CloseRouter(context.Context, *emptypb.Empty) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method CloseRouter not implemented")
 }
-func (UnimplementedTopologyServiceServer) UpdateCoordinator(context.Context, *UpdateCoordinatorRequest) (*UpdateCoordinatorResponse, error) {
+func (UnimplementedTopologyServiceServer) UpdateCoordinator(context.Context, *UpdateCoordinatorRequest) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method UpdateCoordinator not implemented")
 }
-func (UnimplementedTopologyServiceServer) GetCoordinator(context.Context, *GetCoordinatorRequest) (*GetCoordinatorResponse, error) {
+func (UnimplementedTopologyServiceServer) GetCoordinator(context.Context, *emptypb.Empty) (*GetCoordinatorResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method GetCoordinator not implemented")
 }
 func (UnimplementedTopologyServiceServer) mustEmbedUnimplementedTopologyServiceServer() {}
@@ -135,7 +136,7 @@ func RegisterTopologyServiceServer(s grpc.ServiceRegistrar, srv TopologyServiceS
 }
 
 func _TopologyService_OpenRouter_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(OpenRouterRequest)
+	in := new(emptypb.Empty)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
@@ -147,13 +148,13 @@ func _TopologyService_OpenRouter_Handler(srv interface{}, ctx context.Context, d
 		FullMethod: TopologyService_OpenRouter_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(TopologyServiceServer).OpenRouter(ctx, req.(*OpenRouterRequest))
+		return srv.(TopologyServiceServer).OpenRouter(ctx, req.(*emptypb.Empty))
 	}
 	return interceptor(ctx, in, info, handler)
 }
 
 func _TopologyService_GetRouterStatus_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(GetRouterStatusRequest)
+	in := new(emptypb.Empty)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
@@ -165,13 +166,13 @@ func _TopologyService_GetRouterStatus_Handler(srv interface{}, ctx context.Conte
 		FullMethod: TopologyService_GetRouterStatus_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(TopologyServiceServer).GetRouterStatus(ctx, req.(*GetRouterStatusRequest))
+		return srv.(TopologyServiceServer).GetRouterStatus(ctx, req.(*emptypb.Empty))
 	}
 	return interceptor(ctx, in, info, handler)
 }
 
 func _TopologyService_CloseRouter_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(CloseRouterRequest)
+	in := new(emptypb.Empty)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
@@ -183,7 +184,7 @@ func _TopologyService_CloseRouter_Handler(srv interface{}, ctx context.Context,
 		FullMethod: TopologyService_CloseRouter_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(TopologyServiceServer).CloseRouter(ctx, req.(*CloseRouterRequest))
+		return srv.(TopologyServiceServer).CloseRouter(ctx, req.(*emptypb.Empty))
 	}
 	return interceptor(ctx, in, info, handler)
 }
@@ -207,7 +208,7 @@ func _TopologyService_UpdateCoordinator_Handler(srv interface{}, ctx context.Con
 }
 
 func _TopologyService_GetCoordinator_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(GetCoordinatorRequest)
+	in := new(emptypb.Empty)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
@@ -219,7 +220,7 @@ func _TopologyService_GetCoordinator_Handler(srv interface{}, ctx context.Contex
 		FullMethod: TopologyService_GetCoordinator_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(TopologyServiceServer).GetCoordinator(ctx, req.(*GetCoordinatorRequest))
+		return srv.(TopologyServiceServer).GetCoordinator(ctx, req.(*emptypb.Empty))
 	}
 	return interceptor(ctx, in, info, handler)
 }
diff --git a/pkg/protos/distribution.pb.go b/pkg/protos/distribution.pb.go
index 3d9595abf..853af6e04 100644
--- a/pkg/protos/distribution.pb.go
+++ b/pkg/protos/distribution.pb.go
@@ -9,6 +9,7 @@ package proto
 import (
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 	reflect "reflect"
 	sync "sync"
 )
@@ -248,82 +249,6 @@ func (x *CreateDistributionRequest) GetDistributions() []*Distribution {
 	return nil
 }
 
-type CreateDistributionReply struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *CreateDistributionReply) Reset() {
-	*x = CreateDistributionReply{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_distribution_proto_msgTypes[4]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *CreateDistributionReply) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*CreateDistributionReply) ProtoMessage() {}
-
-func (x *CreateDistributionReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_distribution_proto_msgTypes[4]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use CreateDistributionReply.ProtoReflect.Descriptor instead.
-func (*CreateDistributionReply) Descriptor() ([]byte, []int) {
-	return file_protos_distribution_proto_rawDescGZIP(), []int{4}
-}
-
-type ListDistributionsRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *ListDistributionsRequest) Reset() {
-	*x = ListDistributionsRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_distribution_proto_msgTypes[5]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *ListDistributionsRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*ListDistributionsRequest) ProtoMessage() {}
-
-func (x *ListDistributionsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_distribution_proto_msgTypes[5]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use ListDistributionsRequest.ProtoReflect.Descriptor instead.
-func (*ListDistributionsRequest) Descriptor() ([]byte, []int) {
-	return file_protos_distribution_proto_rawDescGZIP(), []int{5}
-}
-
 type ListDistributionsReply struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -335,7 +260,7 @@ type ListDistributionsReply struct {
 func (x *ListDistributionsReply) Reset() {
 	*x = ListDistributionsReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_distribution_proto_msgTypes[6]
+		mi := &file_protos_distribution_proto_msgTypes[4]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -348,7 +273,7 @@ func (x *ListDistributionsReply) String() string {
 func (*ListDistributionsReply) ProtoMessage() {}
 
 func (x *ListDistributionsReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_distribution_proto_msgTypes[6]
+	mi := &file_protos_distribution_proto_msgTypes[4]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -361,7 +286,7 @@ func (x *ListDistributionsReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListDistributionsReply.ProtoReflect.Descriptor instead.
 func (*ListDistributionsReply) Descriptor() ([]byte, []int) {
-	return file_protos_distribution_proto_rawDescGZIP(), []int{6}
+	return file_protos_distribution_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *ListDistributionsReply) GetDistributions() []*Distribution {
@@ -382,7 +307,7 @@ type DropDistributionRequest struct {
 func (x *DropDistributionRequest) Reset() {
 	*x = DropDistributionRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_distribution_proto_msgTypes[7]
+		mi := &file_protos_distribution_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -395,7 +320,7 @@ func (x *DropDistributionRequest) String() string {
 func (*DropDistributionRequest) ProtoMessage() {}
 
 func (x *DropDistributionRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_distribution_proto_msgTypes[7]
+	mi := &file_protos_distribution_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -408,7 +333,7 @@ func (x *DropDistributionRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DropDistributionRequest.ProtoReflect.Descriptor instead.
 func (*DropDistributionRequest) Descriptor() ([]byte, []int) {
-	return file_protos_distribution_proto_rawDescGZIP(), []int{7}
+	return file_protos_distribution_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *DropDistributionRequest) GetIds() []string {
@@ -418,44 +343,6 @@ func (x *DropDistributionRequest) GetIds() []string {
 	return nil
 }
 
-type DropDistributionReply struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *DropDistributionReply) Reset() {
-	*x = DropDistributionReply{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_distribution_proto_msgTypes[8]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *DropDistributionReply) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*DropDistributionReply) ProtoMessage() {}
-
-func (x *DropDistributionReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_distribution_proto_msgTypes[8]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use DropDistributionReply.ProtoReflect.Descriptor instead.
-func (*DropDistributionReply) Descriptor() ([]byte, []int) {
-	return file_protos_distribution_proto_rawDescGZIP(), []int{8}
-}
-
 type AlterDistributionAttachRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -469,7 +356,7 @@ type AlterDistributionAttachRequest struct {
 func (x *AlterDistributionAttachRequest) Reset() {
 	*x = AlterDistributionAttachRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_distribution_proto_msgTypes[9]
+		mi := &file_protos_distribution_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -482,7 +369,7 @@ func (x *AlterDistributionAttachRequest) String() string {
 func (*AlterDistributionAttachRequest) ProtoMessage() {}
 
 func (x *AlterDistributionAttachRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_distribution_proto_msgTypes[9]
+	mi := &file_protos_distribution_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -495,7 +382,7 @@ func (x *AlterDistributionAttachRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AlterDistributionAttachRequest.ProtoReflect.Descriptor instead.
 func (*AlterDistributionAttachRequest) Descriptor() ([]byte, []int) {
-	return file_protos_distribution_proto_rawDescGZIP(), []int{9}
+	return file_protos_distribution_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *AlterDistributionAttachRequest) GetId() string {
@@ -519,44 +406,6 @@ func (x *AlterDistributionAttachRequest) GetRelations() []*DistributedRelation {
 	return nil
 }
 
-type AlterDistributionAttachReply struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *AlterDistributionAttachReply) Reset() {
-	*x = AlterDistributionAttachReply{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_distribution_proto_msgTypes[10]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *AlterDistributionAttachReply) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*AlterDistributionAttachReply) ProtoMessage() {}
-
-func (x *AlterDistributionAttachReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_distribution_proto_msgTypes[10]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use AlterDistributionAttachReply.ProtoReflect.Descriptor instead.
-func (*AlterDistributionAttachReply) Descriptor() ([]byte, []int) {
-	return file_protos_distribution_proto_rawDescGZIP(), []int{10}
-}
-
 type AlterDistributionDetachRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -569,7 +418,7 @@ type AlterDistributionDetachRequest struct {
 func (x *AlterDistributionDetachRequest) Reset() {
 	*x = AlterDistributionDetachRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_distribution_proto_msgTypes[11]
+		mi := &file_protos_distribution_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -582,7 +431,7 @@ func (x *AlterDistributionDetachRequest) String() string {
 func (*AlterDistributionDetachRequest) ProtoMessage() {}
 
 func (x *AlterDistributionDetachRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_distribution_proto_msgTypes[11]
+	mi := &file_protos_distribution_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -595,7 +444,7 @@ func (x *AlterDistributionDetachRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AlterDistributionDetachRequest.ProtoReflect.Descriptor instead.
 func (*AlterDistributionDetachRequest) Descriptor() ([]byte, []int) {
-	return file_protos_distribution_proto_rawDescGZIP(), []int{11}
+	return file_protos_distribution_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *AlterDistributionDetachRequest) GetId() string {
@@ -612,44 +461,6 @@ func (x *AlterDistributionDetachRequest) GetRelNames() []string {
 	return nil
 }
 
-type AlterDistributionDetachReply struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *AlterDistributionDetachReply) Reset() {
-	*x = AlterDistributionDetachReply{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_distribution_proto_msgTypes[12]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *AlterDistributionDetachReply) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*AlterDistributionDetachReply) ProtoMessage() {}
-
-func (x *AlterDistributionDetachReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_distribution_proto_msgTypes[12]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use AlterDistributionDetachReply.ProtoReflect.Descriptor instead.
-func (*AlterDistributionDetachReply) Descriptor() ([]byte, []int) {
-	return file_protos_distribution_proto_rawDescGZIP(), []int{12}
-}
-
 type GetDistributionRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -661,7 +472,7 @@ type GetDistributionRequest struct {
 func (x *GetDistributionRequest) Reset() {
 	*x = GetDistributionRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_distribution_proto_msgTypes[13]
+		mi := &file_protos_distribution_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -674,7 +485,7 @@ func (x *GetDistributionRequest) String() string {
 func (*GetDistributionRequest) ProtoMessage() {}
 
 func (x *GetDistributionRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_distribution_proto_msgTypes[13]
+	mi := &file_protos_distribution_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -687,7 +498,7 @@ func (x *GetDistributionRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetDistributionRequest.ProtoReflect.Descriptor instead.
 func (*GetDistributionRequest) Descriptor() ([]byte, []int) {
-	return file_protos_distribution_proto_rawDescGZIP(), []int{13}
+	return file_protos_distribution_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *GetDistributionRequest) GetId() string {
@@ -708,7 +519,7 @@ type GetDistributionReply struct {
 func (x *GetDistributionReply) Reset() {
 	*x = GetDistributionReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_distribution_proto_msgTypes[14]
+		mi := &file_protos_distribution_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -721,7 +532,7 @@ func (x *GetDistributionReply) String() string {
 func (*GetDistributionReply) ProtoMessage() {}
 
 func (x *GetDistributionReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_distribution_proto_msgTypes[14]
+	mi := &file_protos_distribution_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -734,7 +545,7 @@ func (x *GetDistributionReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetDistributionReply.ProtoReflect.Descriptor instead.
 func (*GetDistributionReply) Descriptor() ([]byte, []int) {
-	return file_protos_distribution_proto_rawDescGZIP(), []int{14}
+	return file_protos_distribution_proto_rawDescGZIP(), []int{9}
 }
 
 func (x *GetDistributionReply) GetDistribution() *Distribution {
@@ -755,7 +566,7 @@ type GetRelationDistributionRequest struct {
 func (x *GetRelationDistributionRequest) Reset() {
 	*x = GetRelationDistributionRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_distribution_proto_msgTypes[15]
+		mi := &file_protos_distribution_proto_msgTypes[10]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -768,7 +579,7 @@ func (x *GetRelationDistributionRequest) String() string {
 func (*GetRelationDistributionRequest) ProtoMessage() {}
 
 func (x *GetRelationDistributionRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_distribution_proto_msgTypes[15]
+	mi := &file_protos_distribution_proto_msgTypes[10]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -781,7 +592,7 @@ func (x *GetRelationDistributionRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetRelationDistributionRequest.ProtoReflect.Descriptor instead.
 func (*GetRelationDistributionRequest) Descriptor() ([]byte, []int) {
-	return file_protos_distribution_proto_rawDescGZIP(), []int{15}
+	return file_protos_distribution_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *GetRelationDistributionRequest) GetId() string {
@@ -802,7 +613,7 @@ type GetRelationDistributionReply struct {
 func (x *GetRelationDistributionReply) Reset() {
 	*x = GetRelationDistributionReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_distribution_proto_msgTypes[16]
+		mi := &file_protos_distribution_proto_msgTypes[11]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -815,7 +626,7 @@ func (x *GetRelationDistributionReply) String() string {
 func (*GetRelationDistributionReply) ProtoMessage() {}
 
 func (x *GetRelationDistributionReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_distribution_proto_msgTypes[16]
+	mi := &file_protos_distribution_proto_msgTypes[11]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -828,7 +639,7 @@ func (x *GetRelationDistributionReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetRelationDistributionReply.ProtoReflect.Descriptor instead.
 func (*GetRelationDistributionReply) Descriptor() ([]byte, []int) {
-	return file_protos_distribution_proto_rawDescGZIP(), []int{16}
+	return file_protos_distribution_proto_rawDescGZIP(), []int{11}
 }
 
 func (x *GetRelationDistributionReply) GetDistribution() *Distribution {
@@ -843,125 +654,115 @@ var File_protos_distribution_proto protoreflect.FileDescriptor
 var file_protos_distribution_proto_rawDesc = []byte{
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 	0x74, 0x72, 0x69, 0x62, 0x75, 0x74, 0x69, 0x6f, 0x6e, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74,
-	0x1a, 0x1a, 0x2e, 0x73, 0x70, 0x71, 0x72, 0x2e, 0x47, 0x65, 0x74, 0x44, 0x69, 0x73, 0x74, 0x72,
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-	0x6f, 0x74, 0x6f, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
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+	0x72, 0x6f, 0x74, 0x6f, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -976,25 +777,21 @@ func file_protos_distribution_proto_rawDescGZIP() []byte {
 	return file_protos_distribution_proto_rawDescData
 }
 
-var file_protos_distribution_proto_msgTypes = make([]protoimpl.MessageInfo, 17)
+var file_protos_distribution_proto_msgTypes = make([]protoimpl.MessageInfo, 12)
 var file_protos_distribution_proto_goTypes = []interface{}{
 	(*DistributionKeyEntry)(nil),           // 0: spqr.DistributionKeyEntry
 	(*DistributedRelation)(nil),            // 1: spqr.DistributedRelation
 	(*Distribution)(nil),                   // 2: spqr.Distribution
 	(*CreateDistributionRequest)(nil),      // 3: spqr.CreateDistributionRequest
-	(*CreateDistributionReply)(nil),        // 4: spqr.CreateDistributionReply
-	(*ListDistributionsRequest)(nil),       // 5: spqr.ListDistributionsRequest
-	(*ListDistributionsReply)(nil),         // 6: spqr.ListDistributionsReply
-	(*DropDistributionRequest)(nil),        // 7: spqr.DropDistributionRequest
-	(*DropDistributionReply)(nil),          // 8: spqr.DropDistributionReply
-	(*AlterDistributionAttachRequest)(nil), // 9: spqr.AlterDistributionAttachRequest
-	(*AlterDistributionAttachReply)(nil),   // 10: spqr.AlterDistributionAttachReply
-	(*AlterDistributionDetachRequest)(nil), // 11: spqr.AlterDistributionDetachRequest
-	(*AlterDistributionDetachReply)(nil),   // 12: spqr.AlterDistributionDetachReply
-	(*GetDistributionRequest)(nil),         // 13: spqr.GetDistributionRequest
-	(*GetDistributionReply)(nil),           // 14: spqr.GetDistributionReply
-	(*GetRelationDistributionRequest)(nil), // 15: spqr.GetRelationDistributionRequest
-	(*GetRelationDistributionReply)(nil),   // 16: spqr.GetRelationDistributionReply
+	(*ListDistributionsReply)(nil),         // 4: spqr.ListDistributionsReply
+	(*DropDistributionRequest)(nil),        // 5: spqr.DropDistributionRequest
+	(*AlterDistributionAttachRequest)(nil), // 6: spqr.AlterDistributionAttachRequest
+	(*AlterDistributionDetachRequest)(nil), // 7: spqr.AlterDistributionDetachRequest
+	(*GetDistributionRequest)(nil),         // 8: spqr.GetDistributionRequest
+	(*GetDistributionReply)(nil),           // 9: spqr.GetDistributionReply
+	(*GetRelationDistributionRequest)(nil), // 10: spqr.GetRelationDistributionRequest
+	(*GetRelationDistributionReply)(nil),   // 11: spqr.GetRelationDistributionReply
+	(*emptypb.Empty)(nil),                  // 12: google.protobuf.Empty
 }
 var file_protos_distribution_proto_depIdxs = []int32{
 	0,  // 0: spqr.DistributedRelation.distributionKey:type_name -> spqr.DistributionKeyEntry
@@ -1005,19 +802,19 @@ var file_protos_distribution_proto_depIdxs = []int32{
 	2,  // 5: spqr.GetDistributionReply.distribution:type_name -> spqr.Distribution
 	2,  // 6: spqr.GetRelationDistributionReply.distribution:type_name -> spqr.Distribution
 	3,  // 7: spqr.DistributionService.CreateDistribution:input_type -> spqr.CreateDistributionRequest
-	7,  // 8: spqr.DistributionService.DropDistribution:input_type -> spqr.DropDistributionRequest
-	5,  // 9: spqr.DistributionService.ListDistributions:input_type -> spqr.ListDistributionsRequest
-	9,  // 10: spqr.DistributionService.AlterDistributionAttach:input_type -> spqr.AlterDistributionAttachRequest
-	11, // 11: spqr.DistributionService.AlterDistributionDetach:input_type -> spqr.AlterDistributionDetachRequest
-	13, // 12: spqr.DistributionService.GetDistribution:input_type -> spqr.GetDistributionRequest
-	15, // 13: spqr.DistributionService.GetRelationDistribution:input_type -> spqr.GetRelationDistributionRequest
-	4,  // 14: spqr.DistributionService.CreateDistribution:output_type -> spqr.CreateDistributionReply
-	8,  // 15: spqr.DistributionService.DropDistribution:output_type -> spqr.DropDistributionReply
-	6,  // 16: spqr.DistributionService.ListDistributions:output_type -> spqr.ListDistributionsReply
-	10, // 17: spqr.DistributionService.AlterDistributionAttach:output_type -> spqr.AlterDistributionAttachReply
-	12, // 18: spqr.DistributionService.AlterDistributionDetach:output_type -> spqr.AlterDistributionDetachReply
-	14, // 19: spqr.DistributionService.GetDistribution:output_type -> spqr.GetDistributionReply
-	16, // 20: spqr.DistributionService.GetRelationDistribution:output_type -> spqr.GetRelationDistributionReply
+	5,  // 8: spqr.DistributionService.DropDistribution:input_type -> spqr.DropDistributionRequest
+	12, // 9: spqr.DistributionService.ListDistributions:input_type -> google.protobuf.Empty
+	6,  // 10: spqr.DistributionService.AlterDistributionAttach:input_type -> spqr.AlterDistributionAttachRequest
+	7,  // 11: spqr.DistributionService.AlterDistributionDetach:input_type -> spqr.AlterDistributionDetachRequest
+	8,  // 12: spqr.DistributionService.GetDistribution:input_type -> spqr.GetDistributionRequest
+	10, // 13: spqr.DistributionService.GetRelationDistribution:input_type -> spqr.GetRelationDistributionRequest
+	12, // 14: spqr.DistributionService.CreateDistribution:output_type -> google.protobuf.Empty
+	12, // 15: spqr.DistributionService.DropDistribution:output_type -> google.protobuf.Empty
+	4,  // 16: spqr.DistributionService.ListDistributions:output_type -> spqr.ListDistributionsReply
+	12, // 17: spqr.DistributionService.AlterDistributionAttach:output_type -> google.protobuf.Empty
+	12, // 18: spqr.DistributionService.AlterDistributionDetach:output_type -> google.protobuf.Empty
+	9,  // 19: spqr.DistributionService.GetDistribution:output_type -> spqr.GetDistributionReply
+	11, // 20: spqr.DistributionService.GetRelationDistribution:output_type -> spqr.GetRelationDistributionReply
 	14, // [14:21] is the sub-list for method output_type
 	7,  // [7:14] is the sub-list for method input_type
 	7,  // [7:7] is the sub-list for extension type_name
@@ -1080,30 +877,6 @@ func file_protos_distribution_proto_init() {
 			}
 		}
 		file_protos_distribution_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CreateDistributionReply); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_distribution_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListDistributionsRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_distribution_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ListDistributionsReply); i {
 			case 0:
 				return &v.state
@@ -1115,7 +888,7 @@ func file_protos_distribution_proto_init() {
 				return nil
 			}
 		}
-		file_protos_distribution_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_distribution_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*DropDistributionRequest); i {
 			case 0:
 				return &v.state
@@ -1127,19 +900,7 @@ func file_protos_distribution_proto_init() {
 				return nil
 			}
 		}
-		file_protos_distribution_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*DropDistributionReply); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_distribution_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_distribution_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*AlterDistributionAttachRequest); i {
 			case 0:
 				return &v.state
@@ -1151,19 +912,7 @@ func file_protos_distribution_proto_init() {
 				return nil
 			}
 		}
-		file_protos_distribution_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*AlterDistributionAttachReply); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_distribution_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_distribution_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*AlterDistributionDetachRequest); i {
 			case 0:
 				return &v.state
@@ -1175,19 +924,7 @@ func file_protos_distribution_proto_init() {
 				return nil
 			}
 		}
-		file_protos_distribution_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*AlterDistributionDetachReply); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_distribution_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_distribution_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetDistributionRequest); i {
 			case 0:
 				return &v.state
@@ -1199,7 +936,7 @@ func file_protos_distribution_proto_init() {
 				return nil
 			}
 		}
-		file_protos_distribution_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_distribution_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetDistributionReply); i {
 			case 0:
 				return &v.state
@@ -1211,7 +948,7 @@ func file_protos_distribution_proto_init() {
 				return nil
 			}
 		}
-		file_protos_distribution_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_distribution_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetRelationDistributionRequest); i {
 			case 0:
 				return &v.state
@@ -1223,7 +960,7 @@ func file_protos_distribution_proto_init() {
 				return nil
 			}
 		}
-		file_protos_distribution_proto_msgTypes[16].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_distribution_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetRelationDistributionReply); i {
 			case 0:
 				return &v.state
@@ -1242,7 +979,7 @@ func file_protos_distribution_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_protos_distribution_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   17,
+			NumMessages:   12,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/pkg/protos/distribution_grpc.pb.go b/pkg/protos/distribution_grpc.pb.go
index e9d849318..3fd8a755e 100644
--- a/pkg/protos/distribution_grpc.pb.go
+++ b/pkg/protos/distribution_grpc.pb.go
@@ -11,6 +11,7 @@ import (
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
 	status "google.golang.org/grpc/status"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 )
 
 // This is a compile-time assertion to ensure that this generated file
@@ -32,11 +33,11 @@ const (
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
 type DistributionServiceClient interface {
-	CreateDistribution(ctx context.Context, in *CreateDistributionRequest, opts ...grpc.CallOption) (*CreateDistributionReply, error)
-	DropDistribution(ctx context.Context, in *DropDistributionRequest, opts ...grpc.CallOption) (*DropDistributionReply, error)
-	ListDistributions(ctx context.Context, in *ListDistributionsRequest, opts ...grpc.CallOption) (*ListDistributionsReply, error)
-	AlterDistributionAttach(ctx context.Context, in *AlterDistributionAttachRequest, opts ...grpc.CallOption) (*AlterDistributionAttachReply, error)
-	AlterDistributionDetach(ctx context.Context, in *AlterDistributionDetachRequest, opts ...grpc.CallOption) (*AlterDistributionDetachReply, error)
+	CreateDistribution(ctx context.Context, in *CreateDistributionRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
+	DropDistribution(ctx context.Context, in *DropDistributionRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
+	ListDistributions(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*ListDistributionsReply, error)
+	AlterDistributionAttach(ctx context.Context, in *AlterDistributionAttachRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
+	AlterDistributionDetach(ctx context.Context, in *AlterDistributionDetachRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	GetDistribution(ctx context.Context, in *GetDistributionRequest, opts ...grpc.CallOption) (*GetDistributionReply, error)
 	GetRelationDistribution(ctx context.Context, in *GetRelationDistributionRequest, opts ...grpc.CallOption) (*GetRelationDistributionReply, error)
 }
@@ -49,8 +50,8 @@ func NewDistributionServiceClient(cc grpc.ClientConnInterface) DistributionServi
 	return &distributionServiceClient{cc}
 }
 
-func (c *distributionServiceClient) CreateDistribution(ctx context.Context, in *CreateDistributionRequest, opts ...grpc.CallOption) (*CreateDistributionReply, error) {
-	out := new(CreateDistributionReply)
+func (c *distributionServiceClient) CreateDistribution(ctx context.Context, in *CreateDistributionRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
 	err := c.cc.Invoke(ctx, DistributionService_CreateDistribution_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
@@ -58,8 +59,8 @@ func (c *distributionServiceClient) CreateDistribution(ctx context.Context, in *
 	return out, nil
 }
 
-func (c *distributionServiceClient) DropDistribution(ctx context.Context, in *DropDistributionRequest, opts ...grpc.CallOption) (*DropDistributionReply, error) {
-	out := new(DropDistributionReply)
+func (c *distributionServiceClient) DropDistribution(ctx context.Context, in *DropDistributionRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
 	err := c.cc.Invoke(ctx, DistributionService_DropDistribution_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
@@ -67,7 +68,7 @@ func (c *distributionServiceClient) DropDistribution(ctx context.Context, in *Dr
 	return out, nil
 }
 
-func (c *distributionServiceClient) ListDistributions(ctx context.Context, in *ListDistributionsRequest, opts ...grpc.CallOption) (*ListDistributionsReply, error) {
+func (c *distributionServiceClient) ListDistributions(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*ListDistributionsReply, error) {
 	out := new(ListDistributionsReply)
 	err := c.cc.Invoke(ctx, DistributionService_ListDistributions_FullMethodName, in, out, opts...)
 	if err != nil {
@@ -76,8 +77,8 @@ func (c *distributionServiceClient) ListDistributions(ctx context.Context, in *L
 	return out, nil
 }
 
-func (c *distributionServiceClient) AlterDistributionAttach(ctx context.Context, in *AlterDistributionAttachRequest, opts ...grpc.CallOption) (*AlterDistributionAttachReply, error) {
-	out := new(AlterDistributionAttachReply)
+func (c *distributionServiceClient) AlterDistributionAttach(ctx context.Context, in *AlterDistributionAttachRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
 	err := c.cc.Invoke(ctx, DistributionService_AlterDistributionAttach_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
@@ -85,8 +86,8 @@ func (c *distributionServiceClient) AlterDistributionAttach(ctx context.Context,
 	return out, nil
 }
 
-func (c *distributionServiceClient) AlterDistributionDetach(ctx context.Context, in *AlterDistributionDetachRequest, opts ...grpc.CallOption) (*AlterDistributionDetachReply, error) {
-	out := new(AlterDistributionDetachReply)
+func (c *distributionServiceClient) AlterDistributionDetach(ctx context.Context, in *AlterDistributionDetachRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
 	err := c.cc.Invoke(ctx, DistributionService_AlterDistributionDetach_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
@@ -116,11 +117,11 @@ func (c *distributionServiceClient) GetRelationDistribution(ctx context.Context,
 // All implementations must embed UnimplementedDistributionServiceServer
 // for forward compatibility
 type DistributionServiceServer interface {
-	CreateDistribution(context.Context, *CreateDistributionRequest) (*CreateDistributionReply, error)
-	DropDistribution(context.Context, *DropDistributionRequest) (*DropDistributionReply, error)
-	ListDistributions(context.Context, *ListDistributionsRequest) (*ListDistributionsReply, error)
-	AlterDistributionAttach(context.Context, *AlterDistributionAttachRequest) (*AlterDistributionAttachReply, error)
-	AlterDistributionDetach(context.Context, *AlterDistributionDetachRequest) (*AlterDistributionDetachReply, error)
+	CreateDistribution(context.Context, *CreateDistributionRequest) (*emptypb.Empty, error)
+	DropDistribution(context.Context, *DropDistributionRequest) (*emptypb.Empty, error)
+	ListDistributions(context.Context, *emptypb.Empty) (*ListDistributionsReply, error)
+	AlterDistributionAttach(context.Context, *AlterDistributionAttachRequest) (*emptypb.Empty, error)
+	AlterDistributionDetach(context.Context, *AlterDistributionDetachRequest) (*emptypb.Empty, error)
 	GetDistribution(context.Context, *GetDistributionRequest) (*GetDistributionReply, error)
 	GetRelationDistribution(context.Context, *GetRelationDistributionRequest) (*GetRelationDistributionReply, error)
 	mustEmbedUnimplementedDistributionServiceServer()
@@ -130,19 +131,19 @@ type DistributionServiceServer interface {
 type UnimplementedDistributionServiceServer struct {
 }
 
-func (UnimplementedDistributionServiceServer) CreateDistribution(context.Context, *CreateDistributionRequest) (*CreateDistributionReply, error) {
+func (UnimplementedDistributionServiceServer) CreateDistribution(context.Context, *CreateDistributionRequest) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method CreateDistribution not implemented")
 }
-func (UnimplementedDistributionServiceServer) DropDistribution(context.Context, *DropDistributionRequest) (*DropDistributionReply, error) {
+func (UnimplementedDistributionServiceServer) DropDistribution(context.Context, *DropDistributionRequest) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method DropDistribution not implemented")
 }
-func (UnimplementedDistributionServiceServer) ListDistributions(context.Context, *ListDistributionsRequest) (*ListDistributionsReply, error) {
+func (UnimplementedDistributionServiceServer) ListDistributions(context.Context, *emptypb.Empty) (*ListDistributionsReply, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ListDistributions not implemented")
 }
-func (UnimplementedDistributionServiceServer) AlterDistributionAttach(context.Context, *AlterDistributionAttachRequest) (*AlterDistributionAttachReply, error) {
+func (UnimplementedDistributionServiceServer) AlterDistributionAttach(context.Context, *AlterDistributionAttachRequest) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method AlterDistributionAttach not implemented")
 }
-func (UnimplementedDistributionServiceServer) AlterDistributionDetach(context.Context, *AlterDistributionDetachRequest) (*AlterDistributionDetachReply, error) {
+func (UnimplementedDistributionServiceServer) AlterDistributionDetach(context.Context, *AlterDistributionDetachRequest) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method AlterDistributionDetach not implemented")
 }
 func (UnimplementedDistributionServiceServer) GetDistribution(context.Context, *GetDistributionRequest) (*GetDistributionReply, error) {
@@ -201,7 +202,7 @@ func _DistributionService_DropDistribution_Handler(srv interface{}, ctx context.
 }
 
 func _DistributionService_ListDistributions_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(ListDistributionsRequest)
+	in := new(emptypb.Empty)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
@@ -213,7 +214,7 @@ func _DistributionService_ListDistributions_Handler(srv interface{}, ctx context
 		FullMethod: DistributionService_ListDistributions_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(DistributionServiceServer).ListDistributions(ctx, req.(*ListDistributionsRequest))
+		return srv.(DistributionServiceServer).ListDistributions(ctx, req.(*emptypb.Empty))
 	}
 	return interceptor(ctx, in, info, handler)
 }
diff --git a/pkg/protos/key_range.pb.go b/pkg/protos/key_range.pb.go
index 9756d9fcf..b06dbabd7 100644
--- a/pkg/protos/key_range.pb.go
+++ b/pkg/protos/key_range.pb.go
@@ -9,6 +9,7 @@ package proto
 import (
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 	reflect "reflect"
 	sync "sync"
 )
@@ -232,44 +233,6 @@ func (x *ListKeyRangeRequest) GetDistribution() string {
 	return ""
 }
 
-type ListAllKeyRangesRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *ListAllKeyRangesRequest) Reset() {
-	*x = ListAllKeyRangesRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_key_range_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *ListAllKeyRangesRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*ListAllKeyRangesRequest) ProtoMessage() {}
-
-func (x *ListAllKeyRangesRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_key_range_proto_msgTypes[3]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use ListAllKeyRangesRequest.ProtoReflect.Descriptor instead.
-func (*ListAllKeyRangesRequest) Descriptor() ([]byte, []int) {
-	return file_protos_key_range_proto_rawDescGZIP(), []int{3}
-}
-
 type CreateKeyRangeRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -281,7 +244,7 @@ type CreateKeyRangeRequest struct {
 func (x *CreateKeyRangeRequest) Reset() {
 	*x = CreateKeyRangeRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_key_range_proto_msgTypes[4]
+		mi := &file_protos_key_range_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -294,7 +257,7 @@ func (x *CreateKeyRangeRequest) String() string {
 func (*CreateKeyRangeRequest) ProtoMessage() {}
 
 func (x *CreateKeyRangeRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_key_range_proto_msgTypes[4]
+	mi := &file_protos_key_range_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -307,7 +270,7 @@ func (x *CreateKeyRangeRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CreateKeyRangeRequest.ProtoReflect.Descriptor instead.
 func (*CreateKeyRangeRequest) Descriptor() ([]byte, []int) {
-	return file_protos_key_range_proto_rawDescGZIP(), []int{4}
+	return file_protos_key_range_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *CreateKeyRangeRequest) GetKeyRangeInfo() *KeyRangeInfo {
@@ -331,7 +294,7 @@ type SplitKeyRangeRequest struct {
 func (x *SplitKeyRangeRequest) Reset() {
 	*x = SplitKeyRangeRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_key_range_proto_msgTypes[5]
+		mi := &file_protos_key_range_proto_msgTypes[4]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -344,7 +307,7 @@ func (x *SplitKeyRangeRequest) String() string {
 func (*SplitKeyRangeRequest) ProtoMessage() {}
 
 func (x *SplitKeyRangeRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_key_range_proto_msgTypes[5]
+	mi := &file_protos_key_range_proto_msgTypes[4]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -357,7 +320,7 @@ func (x *SplitKeyRangeRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SplitKeyRangeRequest.ProtoReflect.Descriptor instead.
 func (*SplitKeyRangeRequest) Descriptor() ([]byte, []int) {
-	return file_protos_key_range_proto_rawDescGZIP(), []int{5}
+	return file_protos_key_range_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *SplitKeyRangeRequest) GetNewId() string {
@@ -400,7 +363,7 @@ type MergeKeyRangeRequest struct {
 func (x *MergeKeyRangeRequest) Reset() {
 	*x = MergeKeyRangeRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_key_range_proto_msgTypes[6]
+		mi := &file_protos_key_range_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -413,7 +376,7 @@ func (x *MergeKeyRangeRequest) String() string {
 func (*MergeKeyRangeRequest) ProtoMessage() {}
 
 func (x *MergeKeyRangeRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_key_range_proto_msgTypes[6]
+	mi := &file_protos_key_range_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -426,7 +389,7 @@ func (x *MergeKeyRangeRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use MergeKeyRangeRequest.ProtoReflect.Descriptor instead.
 func (*MergeKeyRangeRequest) Descriptor() ([]byte, []int) {
-	return file_protos_key_range_proto_rawDescGZIP(), []int{6}
+	return file_protos_key_range_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *MergeKeyRangeRequest) GetBaseId() string {
@@ -455,7 +418,7 @@ type MoveKeyRangeRequest struct {
 func (x *MoveKeyRangeRequest) Reset() {
 	*x = MoveKeyRangeRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_key_range_proto_msgTypes[7]
+		mi := &file_protos_key_range_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -468,7 +431,7 @@ func (x *MoveKeyRangeRequest) String() string {
 func (*MoveKeyRangeRequest) ProtoMessage() {}
 
 func (x *MoveKeyRangeRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_key_range_proto_msgTypes[7]
+	mi := &file_protos_key_range_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -481,7 +444,7 @@ func (x *MoveKeyRangeRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use MoveKeyRangeRequest.ProtoReflect.Descriptor instead.
 func (*MoveKeyRangeRequest) Descriptor() ([]byte, []int) {
-	return file_protos_key_range_proto_rawDescGZIP(), []int{7}
+	return file_protos_key_range_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *MoveKeyRangeRequest) GetId() string {
@@ -509,7 +472,7 @@ type DropKeyRangeRequest struct {
 func (x *DropKeyRangeRequest) Reset() {
 	*x = DropKeyRangeRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_key_range_proto_msgTypes[8]
+		mi := &file_protos_key_range_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -522,7 +485,7 @@ func (x *DropKeyRangeRequest) String() string {
 func (*DropKeyRangeRequest) ProtoMessage() {}
 
 func (x *DropKeyRangeRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_key_range_proto_msgTypes[8]
+	mi := &file_protos_key_range_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -535,7 +498,7 @@ func (x *DropKeyRangeRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DropKeyRangeRequest.ProtoReflect.Descriptor instead.
 func (*DropKeyRangeRequest) Descriptor() ([]byte, []int) {
-	return file_protos_key_range_proto_rawDescGZIP(), []int{8}
+	return file_protos_key_range_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *DropKeyRangeRequest) GetId() []string {
@@ -545,44 +508,6 @@ func (x *DropKeyRangeRequest) GetId() []string {
 	return nil
 }
 
-type DropAllKeyRangesRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *DropAllKeyRangesRequest) Reset() {
-	*x = DropAllKeyRangesRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_key_range_proto_msgTypes[9]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *DropAllKeyRangesRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*DropAllKeyRangesRequest) ProtoMessage() {}
-
-func (x *DropAllKeyRangesRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_key_range_proto_msgTypes[9]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use DropAllKeyRangesRequest.ProtoReflect.Descriptor instead.
-func (*DropAllKeyRangesRequest) Descriptor() ([]byte, []int) {
-	return file_protos_key_range_proto_rawDescGZIP(), []int{9}
-}
-
 type DropAllKeyRangesResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -594,7 +519,7 @@ type DropAllKeyRangesResponse struct {
 func (x *DropAllKeyRangesResponse) Reset() {
 	*x = DropAllKeyRangesResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_key_range_proto_msgTypes[10]
+		mi := &file_protos_key_range_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -607,7 +532,7 @@ func (x *DropAllKeyRangesResponse) String() string {
 func (*DropAllKeyRangesResponse) ProtoMessage() {}
 
 func (x *DropAllKeyRangesResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_key_range_proto_msgTypes[10]
+	mi := &file_protos_key_range_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -620,7 +545,7 @@ func (x *DropAllKeyRangesResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DropAllKeyRangesResponse.ProtoReflect.Descriptor instead.
 func (*DropAllKeyRangesResponse) Descriptor() ([]byte, []int) {
-	return file_protos_key_range_proto_rawDescGZIP(), []int{10}
+	return file_protos_key_range_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *DropAllKeyRangesResponse) GetKeyRange() []*KeyRangeInfo {
@@ -641,7 +566,7 @@ type LockKeyRangeRequest struct {
 func (x *LockKeyRangeRequest) Reset() {
 	*x = LockKeyRangeRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_key_range_proto_msgTypes[11]
+		mi := &file_protos_key_range_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -654,7 +579,7 @@ func (x *LockKeyRangeRequest) String() string {
 func (*LockKeyRangeRequest) ProtoMessage() {}
 
 func (x *LockKeyRangeRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_key_range_proto_msgTypes[11]
+	mi := &file_protos_key_range_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -667,7 +592,7 @@ func (x *LockKeyRangeRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use LockKeyRangeRequest.ProtoReflect.Descriptor instead.
 func (*LockKeyRangeRequest) Descriptor() ([]byte, []int) {
-	return file_protos_key_range_proto_rawDescGZIP(), []int{11}
+	return file_protos_key_range_proto_rawDescGZIP(), []int{9}
 }
 
 func (x *LockKeyRangeRequest) GetId() []string {
@@ -688,7 +613,7 @@ type UnlockKeyRangeRequest struct {
 func (x *UnlockKeyRangeRequest) Reset() {
 	*x = UnlockKeyRangeRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_key_range_proto_msgTypes[12]
+		mi := &file_protos_key_range_proto_msgTypes[10]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -701,7 +626,7 @@ func (x *UnlockKeyRangeRequest) String() string {
 func (*UnlockKeyRangeRequest) ProtoMessage() {}
 
 func (x *UnlockKeyRangeRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_key_range_proto_msgTypes[12]
+	mi := &file_protos_key_range_proto_msgTypes[10]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -714,7 +639,7 @@ func (x *UnlockKeyRangeRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use UnlockKeyRangeRequest.ProtoReflect.Descriptor instead.
 func (*UnlockKeyRangeRequest) Descriptor() ([]byte, []int) {
-	return file_protos_key_range_proto_rawDescGZIP(), []int{12}
+	return file_protos_key_range_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *UnlockKeyRangeRequest) GetId() []string {
@@ -735,7 +660,7 @@ type KeyRangeReply struct {
 func (x *KeyRangeReply) Reset() {
 	*x = KeyRangeReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_key_range_proto_msgTypes[13]
+		mi := &file_protos_key_range_proto_msgTypes[11]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -748,7 +673,7 @@ func (x *KeyRangeReply) String() string {
 func (*KeyRangeReply) ProtoMessage() {}
 
 func (x *KeyRangeReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_key_range_proto_msgTypes[13]
+	mi := &file_protos_key_range_proto_msgTypes[11]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -761,7 +686,7 @@ func (x *KeyRangeReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use KeyRangeReply.ProtoReflect.Descriptor instead.
 func (*KeyRangeReply) Descriptor() ([]byte, []int) {
-	return file_protos_key_range_proto_rawDescGZIP(), []int{13}
+	return file_protos_key_range_proto_rawDescGZIP(), []int{11}
 }
 
 func (x *KeyRangeReply) GetKeyRangesInfo() []*KeyRangeInfo {
@@ -782,7 +707,7 @@ type ModifyReply struct {
 func (x *ModifyReply) Reset() {
 	*x = ModifyReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_key_range_proto_msgTypes[14]
+		mi := &file_protos_key_range_proto_msgTypes[12]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -795,7 +720,7 @@ func (x *ModifyReply) String() string {
 func (*ModifyReply) ProtoMessage() {}
 
 func (x *ModifyReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_key_range_proto_msgTypes[14]
+	mi := &file_protos_key_range_proto_msgTypes[12]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -808,7 +733,7 @@ func (x *ModifyReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ModifyReply.ProtoReflect.Descriptor instead.
 func (*ModifyReply) Descriptor() ([]byte, []int) {
-	return file_protos_key_range_proto_rawDescGZIP(), []int{14}
+	return file_protos_key_range_proto_rawDescGZIP(), []int{12}
 }
 
 func (x *ModifyReply) GetOperationId() string {
@@ -829,7 +754,7 @@ type ResolveKeyRangeRequest struct {
 func (x *ResolveKeyRangeRequest) Reset() {
 	*x = ResolveKeyRangeRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_key_range_proto_msgTypes[15]
+		mi := &file_protos_key_range_proto_msgTypes[13]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -842,7 +767,7 @@ func (x *ResolveKeyRangeRequest) String() string {
 func (*ResolveKeyRangeRequest) ProtoMessage() {}
 
 func (x *ResolveKeyRangeRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_key_range_proto_msgTypes[15]
+	mi := &file_protos_key_range_proto_msgTypes[13]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -855,7 +780,7 @@ func (x *ResolveKeyRangeRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ResolveKeyRangeRequest.ProtoReflect.Descriptor instead.
 func (*ResolveKeyRangeRequest) Descriptor() ([]byte, []int) {
-	return file_protos_key_range_proto_rawDescGZIP(), []int{15}
+	return file_protos_key_range_proto_rawDescGZIP(), []int{13}
 }
 
 func (x *ResolveKeyRangeRequest) GetBound() string {
@@ -876,7 +801,7 @@ type ResolveKeyRangeReply struct {
 func (x *ResolveKeyRangeReply) Reset() {
 	*x = ResolveKeyRangeReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_key_range_proto_msgTypes[16]
+		mi := &file_protos_key_range_proto_msgTypes[14]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -889,7 +814,7 @@ func (x *ResolveKeyRangeReply) String() string {
 func (*ResolveKeyRangeReply) ProtoMessage() {}
 
 func (x *ResolveKeyRangeReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_key_range_proto_msgTypes[16]
+	mi := &file_protos_key_range_proto_msgTypes[14]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -902,7 +827,7 @@ func (x *ResolveKeyRangeReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ResolveKeyRangeReply.ProtoReflect.Descriptor instead.
 func (*ResolveKeyRangeReply) Descriptor() ([]byte, []int) {
-	return file_protos_key_range_proto_rawDescGZIP(), []int{16}
+	return file_protos_key_range_proto_rawDescGZIP(), []int{14}
 }
 
 func (x *ResolveKeyRangeReply) GetKeyRangeD() []string {
@@ -923,7 +848,7 @@ type GetKeyRangeRequest struct {
 func (x *GetKeyRangeRequest) Reset() {
 	*x = GetKeyRangeRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_key_range_proto_msgTypes[17]
+		mi := &file_protos_key_range_proto_msgTypes[15]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -936,7 +861,7 @@ func (x *GetKeyRangeRequest) String() string {
 func (*GetKeyRangeRequest) ProtoMessage() {}
 
 func (x *GetKeyRangeRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_key_range_proto_msgTypes[17]
+	mi := &file_protos_key_range_proto_msgTypes[15]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -949,7 +874,7 @@ func (x *GetKeyRangeRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetKeyRangeRequest.ProtoReflect.Descriptor instead.
 func (*GetKeyRangeRequest) Descriptor() ([]byte, []int) {
-	return file_protos_key_range_proto_rawDescGZIP(), []int{17}
+	return file_protos_key_range_proto_rawDescGZIP(), []int{15}
 }
 
 func (x *GetKeyRangeRequest) GetIds() []string {
@@ -963,93 +888,91 @@ var File_protos_key_range_proto protoreflect.FileDescriptor
 
 var file_protos_key_range_proto_rawDesc = []byte{
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+	0x6f, 0x63, 0x6b, 0x4b, 0x65, 0x79, 0x52, 0x61, 0x6e, 0x67, 0x65, 0x12, 0x1b, 0x2e, 0x73, 0x70,
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+	0x65, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x11, 0x2e, 0x73, 0x70, 0x71, 0x72, 0x2e,
+	0x4d, 0x6f, 0x64, 0x69, 0x66, 0x79, 0x52, 0x65, 0x70, 0x6c, 0x79, 0x22, 0x00, 0x12, 0x40, 0x0a,
+	0x0d, 0x53, 0x70, 0x6c, 0x69, 0x74, 0x4b, 0x65, 0x79, 0x52, 0x61, 0x6e, 0x67, 0x65, 0x12, 0x1a,
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+	0x6e, 0x67, 0x65, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x11, 0x2e, 0x73, 0x70, 0x71,
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+	0x40, 0x0a, 0x0d, 0x4d, 0x65, 0x72, 0x67, 0x65, 0x4b, 0x65, 0x79, 0x52, 0x61, 0x6e, 0x67, 0x65,
+	0x12, 0x1a, 0x2e, 0x73, 0x70, 0x71, 0x72, 0x2e, 0x4d, 0x65, 0x72, 0x67, 0x65, 0x4b, 0x65, 0x79,
+	0x52, 0x61, 0x6e, 0x67, 0x65, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x11, 0x2e, 0x73,
+	0x70, 0x71, 0x72, 0x2e, 0x4d, 0x6f, 0x64, 0x69, 0x66, 0x79, 0x52, 0x65, 0x70, 0x6c, 0x79, 0x22,
+	0x00, 0x12, 0x3e, 0x0a, 0x0c, 0x4d, 0x6f, 0x76, 0x65, 0x4b, 0x65, 0x79, 0x52, 0x61, 0x6e, 0x67,
+	0x65, 0x12, 0x19, 0x2e, 0x73, 0x70, 0x71, 0x72, 0x2e, 0x4d, 0x6f, 0x76, 0x65, 0x4b, 0x65, 0x79,
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+	0x70, 0x71, 0x72, 0x2e, 0x4d, 0x6f, 0x64, 0x69, 0x66, 0x79, 0x52, 0x65, 0x70, 0x6c, 0x79, 0x22,
+	0x00, 0x12, 0x4d, 0x0a, 0x0f, 0x52, 0x65, 0x73, 0x6f, 0x6c, 0x76, 0x65, 0x4b, 0x65, 0x79, 0x52,
+	0x61, 0x6e, 0x67, 0x65, 0x12, 0x1c, 0x2e, 0x73, 0x70, 0x71, 0x72, 0x2e, 0x52, 0x65, 0x73, 0x6f,
+	0x6c, 0x76, 0x65, 0x4b, 0x65, 0x79, 0x52, 0x61, 0x6e, 0x67, 0x65, 0x52, 0x65, 0x71, 0x75, 0x65,
+	0x73, 0x74, 0x1a, 0x1a, 0x2e, 0x73, 0x70, 0x71, 0x72, 0x2e, 0x52, 0x65, 0x73, 0x6f, 0x6c, 0x76,
+	0x65, 0x4b, 0x65, 0x79, 0x52, 0x61, 0x6e, 0x67, 0x65, 0x52, 0x65, 0x70, 0x6c, 0x79, 0x22, 0x00,
+	0x42, 0x0c, 0x5a, 0x0a, 0x73, 0x70, 0x71, 0x72, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x06,
+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -1107,57 +1030,56 @@ func file_protos_key_range_proto_rawDescGZIP() []byte {
 }
 
 var file_protos_key_range_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
-var file_protos_key_range_proto_msgTypes = make([]protoimpl.MessageInfo, 18)
+var file_protos_key_range_proto_msgTypes = make([]protoimpl.MessageInfo, 16)
 var file_protos_key_range_proto_goTypes = []interface{}{
 	(KeyRangeStatus)(0),              // 0: spqr.KeyRangeStatus
 	(*KeyRangeBound)(nil),            // 1: spqr.KeyRangeBound
 	(*KeyRangeInfo)(nil),             // 2: spqr.KeyRangeInfo
 	(*ListKeyRangeRequest)(nil),      // 3: spqr.ListKeyRangeRequest
-	(*ListAllKeyRangesRequest)(nil),  // 4: spqr.ListAllKeyRangesRequest
-	(*CreateKeyRangeRequest)(nil),    // 5: spqr.CreateKeyRangeRequest
-	(*SplitKeyRangeRequest)(nil),     // 6: spqr.SplitKeyRangeRequest
-	(*MergeKeyRangeRequest)(nil),     // 7: spqr.MergeKeyRangeRequest
-	(*MoveKeyRangeRequest)(nil),      // 8: spqr.MoveKeyRangeRequest
-	(*DropKeyRangeRequest)(nil),      // 9: spqr.DropKeyRangeRequest
-	(*DropAllKeyRangesRequest)(nil),  // 10: spqr.DropAllKeyRangesRequest
-	(*DropAllKeyRangesResponse)(nil), // 11: spqr.DropAllKeyRangesResponse
-	(*LockKeyRangeRequest)(nil),      // 12: spqr.LockKeyRangeRequest
-	(*UnlockKeyRangeRequest)(nil),    // 13: spqr.UnlockKeyRangeRequest
-	(*KeyRangeReply)(nil),            // 14: spqr.KeyRangeReply
-	(*ModifyReply)(nil),              // 15: spqr.ModifyReply
-	(*ResolveKeyRangeRequest)(nil),   // 16: spqr.ResolveKeyRangeRequest
-	(*ResolveKeyRangeReply)(nil),     // 17: spqr.ResolveKeyRangeReply
-	(*GetKeyRangeRequest)(nil),       // 18: spqr.GetKeyRangeRequest
+	(*CreateKeyRangeRequest)(nil),    // 4: spqr.CreateKeyRangeRequest
+	(*SplitKeyRangeRequest)(nil),     // 5: spqr.SplitKeyRangeRequest
+	(*MergeKeyRangeRequest)(nil),     // 6: spqr.MergeKeyRangeRequest
+	(*MoveKeyRangeRequest)(nil),      // 7: spqr.MoveKeyRangeRequest
+	(*DropKeyRangeRequest)(nil),      // 8: spqr.DropKeyRangeRequest
+	(*DropAllKeyRangesResponse)(nil), // 9: spqr.DropAllKeyRangesResponse
+	(*LockKeyRangeRequest)(nil),      // 10: spqr.LockKeyRangeRequest
+	(*UnlockKeyRangeRequest)(nil),    // 11: spqr.UnlockKeyRangeRequest
+	(*KeyRangeReply)(nil),            // 12: spqr.KeyRangeReply
+	(*ModifyReply)(nil),              // 13: spqr.ModifyReply
+	(*ResolveKeyRangeRequest)(nil),   // 14: spqr.ResolveKeyRangeRequest
+	(*ResolveKeyRangeReply)(nil),     // 15: spqr.ResolveKeyRangeReply
+	(*GetKeyRangeRequest)(nil),       // 16: spqr.GetKeyRangeRequest
+	(*emptypb.Empty)(nil),            // 17: google.protobuf.Empty
 }
 var file_protos_key_range_proto_depIdxs = []int32{
 	1,  // 0: spqr.KeyRangeInfo.bound:type_name -> spqr.KeyRangeBound
 	2,  // 1: spqr.CreateKeyRangeRequest.key_range_info:type_name -> spqr.KeyRangeInfo
 	2,  // 2: spqr.DropAllKeyRangesResponse.key_range:type_name -> spqr.KeyRangeInfo
 	2,  // 3: spqr.KeyRangeReply.key_ranges_info:type_name -> spqr.KeyRangeInfo
-	18, // 4: spqr.KeyRangeService.GetKeyRange:input_type -> spqr.GetKeyRangeRequest
+	16, // 4: spqr.KeyRangeService.GetKeyRange:input_type -> spqr.GetKeyRangeRequest
 	3,  // 5: spqr.KeyRangeService.ListKeyRange:input_type -> spqr.ListKeyRangeRequest
-	4,  // 6: spqr.KeyRangeService.ListAllKeyRanges:input_type -> spqr.ListAllKeyRangesRequest
-	12, // 7: spqr.KeyRangeService.LockKeyRange:input_type -> spqr.LockKeyRangeRequest
-	5,  // 8: spqr.KeyRangeService.CreateKeyRange:input_type -> spqr.CreateKeyRangeRequest
-	9,  // 9: spqr.KeyRangeService.DropKeyRange:input_type -> spqr.DropKeyRangeRequest
-	10, // 10: spqr.KeyRangeService.DropAllKeyRanges:input_type -> spqr.DropAllKeyRangesRequest
-	13, // 11: spqr.KeyRangeService.UnlockKeyRange:input_type -> spqr.UnlockKeyRangeRequest
-	6,  // 12: spqr.KeyRangeService.SplitKeyRange:input_type -> spqr.SplitKeyRangeRequest
-	7,  // 13: spqr.KeyRangeService.MergeKeyRange:input_type -> spqr.MergeKeyRangeRequest
-	8,  // 14: spqr.KeyRangeService.MoveKeyRange:input_type -> spqr.MoveKeyRangeRequest
-	16, // 15: spqr.KeyRangeService.ResolveKeyRange:input_type -> spqr.ResolveKeyRangeRequest
-	14, // 16: spqr.KeyRangeService.GetKeyRange:output_type -> spqr.KeyRangeReply
-	14, // 17: spqr.KeyRangeService.ListKeyRange:output_type -> spqr.KeyRangeReply
-	14, // 18: spqr.KeyRangeService.ListAllKeyRanges:output_type -> spqr.KeyRangeReply
-	15, // 19: spqr.KeyRangeService.LockKeyRange:output_type -> spqr.ModifyReply
-	15, // 20: spqr.KeyRangeService.CreateKeyRange:output_type -> spqr.ModifyReply
-	15, // 21: spqr.KeyRangeService.DropKeyRange:output_type -> spqr.ModifyReply
-	11, // 22: spqr.KeyRangeService.DropAllKeyRanges:output_type -> spqr.DropAllKeyRangesResponse
-	15, // 23: spqr.KeyRangeService.UnlockKeyRange:output_type -> spqr.ModifyReply
-	15, // 24: spqr.KeyRangeService.SplitKeyRange:output_type -> spqr.ModifyReply
-	15, // 25: spqr.KeyRangeService.MergeKeyRange:output_type -> spqr.ModifyReply
-	15, // 26: spqr.KeyRangeService.MoveKeyRange:output_type -> spqr.ModifyReply
-	17, // 27: spqr.KeyRangeService.ResolveKeyRange:output_type -> spqr.ResolveKeyRangeReply
+	17, // 6: spqr.KeyRangeService.ListAllKeyRanges:input_type -> google.protobuf.Empty
+	10, // 7: spqr.KeyRangeService.LockKeyRange:input_type -> spqr.LockKeyRangeRequest
+	4,  // 8: spqr.KeyRangeService.CreateKeyRange:input_type -> spqr.CreateKeyRangeRequest
+	8,  // 9: spqr.KeyRangeService.DropKeyRange:input_type -> spqr.DropKeyRangeRequest
+	17, // 10: spqr.KeyRangeService.DropAllKeyRanges:input_type -> google.protobuf.Empty
+	11, // 11: spqr.KeyRangeService.UnlockKeyRange:input_type -> spqr.UnlockKeyRangeRequest
+	5,  // 12: spqr.KeyRangeService.SplitKeyRange:input_type -> spqr.SplitKeyRangeRequest
+	6,  // 13: spqr.KeyRangeService.MergeKeyRange:input_type -> spqr.MergeKeyRangeRequest
+	7,  // 14: spqr.KeyRangeService.MoveKeyRange:input_type -> spqr.MoveKeyRangeRequest
+	14, // 15: spqr.KeyRangeService.ResolveKeyRange:input_type -> spqr.ResolveKeyRangeRequest
+	12, // 16: spqr.KeyRangeService.GetKeyRange:output_type -> spqr.KeyRangeReply
+	12, // 17: spqr.KeyRangeService.ListKeyRange:output_type -> spqr.KeyRangeReply
+	12, // 18: spqr.KeyRangeService.ListAllKeyRanges:output_type -> spqr.KeyRangeReply
+	13, // 19: spqr.KeyRangeService.LockKeyRange:output_type -> spqr.ModifyReply
+	13, // 20: spqr.KeyRangeService.CreateKeyRange:output_type -> spqr.ModifyReply
+	13, // 21: spqr.KeyRangeService.DropKeyRange:output_type -> spqr.ModifyReply
+	9,  // 22: spqr.KeyRangeService.DropAllKeyRanges:output_type -> spqr.DropAllKeyRangesResponse
+	13, // 23: spqr.KeyRangeService.UnlockKeyRange:output_type -> spqr.ModifyReply
+	13, // 24: spqr.KeyRangeService.SplitKeyRange:output_type -> spqr.ModifyReply
+	13, // 25: spqr.KeyRangeService.MergeKeyRange:output_type -> spqr.ModifyReply
+	13, // 26: spqr.KeyRangeService.MoveKeyRange:output_type -> spqr.ModifyReply
+	15, // 27: spqr.KeyRangeService.ResolveKeyRange:output_type -> spqr.ResolveKeyRangeReply
 	16, // [16:28] is the sub-list for method output_type
 	4,  // [4:16] is the sub-list for method input_type
 	4,  // [4:4] is the sub-list for extension type_name
@@ -1208,18 +1130,6 @@ func file_protos_key_range_proto_init() {
 			}
 		}
 		file_protos_key_range_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListAllKeyRangesRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_key_range_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*CreateKeyRangeRequest); i {
 			case 0:
 				return &v.state
@@ -1231,7 +1141,7 @@ func file_protos_key_range_proto_init() {
 				return nil
 			}
 		}
-		file_protos_key_range_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_key_range_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*SplitKeyRangeRequest); i {
 			case 0:
 				return &v.state
@@ -1243,7 +1153,7 @@ func file_protos_key_range_proto_init() {
 				return nil
 			}
 		}
-		file_protos_key_range_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_key_range_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*MergeKeyRangeRequest); i {
 			case 0:
 				return &v.state
@@ -1255,7 +1165,7 @@ func file_protos_key_range_proto_init() {
 				return nil
 			}
 		}
-		file_protos_key_range_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_key_range_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*MoveKeyRangeRequest); i {
 			case 0:
 				return &v.state
@@ -1267,7 +1177,7 @@ func file_protos_key_range_proto_init() {
 				return nil
 			}
 		}
-		file_protos_key_range_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_key_range_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*DropKeyRangeRequest); i {
 			case 0:
 				return &v.state
@@ -1279,19 +1189,7 @@ func file_protos_key_range_proto_init() {
 				return nil
 			}
 		}
-		file_protos_key_range_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*DropAllKeyRangesRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_key_range_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_key_range_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*DropAllKeyRangesResponse); i {
 			case 0:
 				return &v.state
@@ -1303,7 +1201,7 @@ func file_protos_key_range_proto_init() {
 				return nil
 			}
 		}
-		file_protos_key_range_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_key_range_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*LockKeyRangeRequest); i {
 			case 0:
 				return &v.state
@@ -1315,7 +1213,7 @@ func file_protos_key_range_proto_init() {
 				return nil
 			}
 		}
-		file_protos_key_range_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_key_range_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*UnlockKeyRangeRequest); i {
 			case 0:
 				return &v.state
@@ -1327,7 +1225,7 @@ func file_protos_key_range_proto_init() {
 				return nil
 			}
 		}
-		file_protos_key_range_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_key_range_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*KeyRangeReply); i {
 			case 0:
 				return &v.state
@@ -1339,7 +1237,7 @@ func file_protos_key_range_proto_init() {
 				return nil
 			}
 		}
-		file_protos_key_range_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_key_range_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ModifyReply); i {
 			case 0:
 				return &v.state
@@ -1351,7 +1249,7 @@ func file_protos_key_range_proto_init() {
 				return nil
 			}
 		}
-		file_protos_key_range_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_key_range_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ResolveKeyRangeRequest); i {
 			case 0:
 				return &v.state
@@ -1363,7 +1261,7 @@ func file_protos_key_range_proto_init() {
 				return nil
 			}
 		}
-		file_protos_key_range_proto_msgTypes[16].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_key_range_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ResolveKeyRangeReply); i {
 			case 0:
 				return &v.state
@@ -1375,7 +1273,7 @@ func file_protos_key_range_proto_init() {
 				return nil
 			}
 		}
-		file_protos_key_range_proto_msgTypes[17].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_key_range_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetKeyRangeRequest); i {
 			case 0:
 				return &v.state
@@ -1394,7 +1292,7 @@ func file_protos_key_range_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_protos_key_range_proto_rawDesc,
 			NumEnums:      1,
-			NumMessages:   18,
+			NumMessages:   16,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/pkg/protos/key_range_grpc.pb.go b/pkg/protos/key_range_grpc.pb.go
index 4f71d275d..42821e717 100644
--- a/pkg/protos/key_range_grpc.pb.go
+++ b/pkg/protos/key_range_grpc.pb.go
@@ -11,6 +11,7 @@ import (
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
 	status "google.golang.org/grpc/status"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 )
 
 // This is a compile-time assertion to ensure that this generated file
@@ -39,11 +40,11 @@ const (
 type KeyRangeServiceClient interface {
 	GetKeyRange(ctx context.Context, in *GetKeyRangeRequest, opts ...grpc.CallOption) (*KeyRangeReply, error)
 	ListKeyRange(ctx context.Context, in *ListKeyRangeRequest, opts ...grpc.CallOption) (*KeyRangeReply, error)
-	ListAllKeyRanges(ctx context.Context, in *ListAllKeyRangesRequest, opts ...grpc.CallOption) (*KeyRangeReply, error)
+	ListAllKeyRanges(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*KeyRangeReply, error)
 	LockKeyRange(ctx context.Context, in *LockKeyRangeRequest, opts ...grpc.CallOption) (*ModifyReply, error)
 	CreateKeyRange(ctx context.Context, in *CreateKeyRangeRequest, opts ...grpc.CallOption) (*ModifyReply, error)
 	DropKeyRange(ctx context.Context, in *DropKeyRangeRequest, opts ...grpc.CallOption) (*ModifyReply, error)
-	DropAllKeyRanges(ctx context.Context, in *DropAllKeyRangesRequest, opts ...grpc.CallOption) (*DropAllKeyRangesResponse, error)
+	DropAllKeyRanges(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*DropAllKeyRangesResponse, error)
 	UnlockKeyRange(ctx context.Context, in *UnlockKeyRangeRequest, opts ...grpc.CallOption) (*ModifyReply, error)
 	SplitKeyRange(ctx context.Context, in *SplitKeyRangeRequest, opts ...grpc.CallOption) (*ModifyReply, error)
 	MergeKeyRange(ctx context.Context, in *MergeKeyRangeRequest, opts ...grpc.CallOption) (*ModifyReply, error)
@@ -77,7 +78,7 @@ func (c *keyRangeServiceClient) ListKeyRange(ctx context.Context, in *ListKeyRan
 	return out, nil
 }
 
-func (c *keyRangeServiceClient) ListAllKeyRanges(ctx context.Context, in *ListAllKeyRangesRequest, opts ...grpc.CallOption) (*KeyRangeReply, error) {
+func (c *keyRangeServiceClient) ListAllKeyRanges(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*KeyRangeReply, error) {
 	out := new(KeyRangeReply)
 	err := c.cc.Invoke(ctx, KeyRangeService_ListAllKeyRanges_FullMethodName, in, out, opts...)
 	if err != nil {
@@ -113,7 +114,7 @@ func (c *keyRangeServiceClient) DropKeyRange(ctx context.Context, in *DropKeyRan
 	return out, nil
 }
 
-func (c *keyRangeServiceClient) DropAllKeyRanges(ctx context.Context, in *DropAllKeyRangesRequest, opts ...grpc.CallOption) (*DropAllKeyRangesResponse, error) {
+func (c *keyRangeServiceClient) DropAllKeyRanges(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*DropAllKeyRangesResponse, error) {
 	out := new(DropAllKeyRangesResponse)
 	err := c.cc.Invoke(ctx, KeyRangeService_DropAllKeyRanges_FullMethodName, in, out, opts...)
 	if err != nil {
@@ -173,11 +174,11 @@ func (c *keyRangeServiceClient) ResolveKeyRange(ctx context.Context, in *Resolve
 type KeyRangeServiceServer interface {
 	GetKeyRange(context.Context, *GetKeyRangeRequest) (*KeyRangeReply, error)
 	ListKeyRange(context.Context, *ListKeyRangeRequest) (*KeyRangeReply, error)
-	ListAllKeyRanges(context.Context, *ListAllKeyRangesRequest) (*KeyRangeReply, error)
+	ListAllKeyRanges(context.Context, *emptypb.Empty) (*KeyRangeReply, error)
 	LockKeyRange(context.Context, *LockKeyRangeRequest) (*ModifyReply, error)
 	CreateKeyRange(context.Context, *CreateKeyRangeRequest) (*ModifyReply, error)
 	DropKeyRange(context.Context, *DropKeyRangeRequest) (*ModifyReply, error)
-	DropAllKeyRanges(context.Context, *DropAllKeyRangesRequest) (*DropAllKeyRangesResponse, error)
+	DropAllKeyRanges(context.Context, *emptypb.Empty) (*DropAllKeyRangesResponse, error)
 	UnlockKeyRange(context.Context, *UnlockKeyRangeRequest) (*ModifyReply, error)
 	SplitKeyRange(context.Context, *SplitKeyRangeRequest) (*ModifyReply, error)
 	MergeKeyRange(context.Context, *MergeKeyRangeRequest) (*ModifyReply, error)
@@ -196,7 +197,7 @@ func (UnimplementedKeyRangeServiceServer) GetKeyRange(context.Context, *GetKeyRa
 func (UnimplementedKeyRangeServiceServer) ListKeyRange(context.Context, *ListKeyRangeRequest) (*KeyRangeReply, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ListKeyRange not implemented")
 }
-func (UnimplementedKeyRangeServiceServer) ListAllKeyRanges(context.Context, *ListAllKeyRangesRequest) (*KeyRangeReply, error) {
+func (UnimplementedKeyRangeServiceServer) ListAllKeyRanges(context.Context, *emptypb.Empty) (*KeyRangeReply, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ListAllKeyRanges not implemented")
 }
 func (UnimplementedKeyRangeServiceServer) LockKeyRange(context.Context, *LockKeyRangeRequest) (*ModifyReply, error) {
@@ -208,7 +209,7 @@ func (UnimplementedKeyRangeServiceServer) CreateKeyRange(context.Context, *Creat
 func (UnimplementedKeyRangeServiceServer) DropKeyRange(context.Context, *DropKeyRangeRequest) (*ModifyReply, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method DropKeyRange not implemented")
 }
-func (UnimplementedKeyRangeServiceServer) DropAllKeyRanges(context.Context, *DropAllKeyRangesRequest) (*DropAllKeyRangesResponse, error) {
+func (UnimplementedKeyRangeServiceServer) DropAllKeyRanges(context.Context, *emptypb.Empty) (*DropAllKeyRangesResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method DropAllKeyRanges not implemented")
 }
 func (UnimplementedKeyRangeServiceServer) UnlockKeyRange(context.Context, *UnlockKeyRangeRequest) (*ModifyReply, error) {
@@ -276,7 +277,7 @@ func _KeyRangeService_ListKeyRange_Handler(srv interface{}, ctx context.Context,
 }
 
 func _KeyRangeService_ListAllKeyRanges_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(ListAllKeyRangesRequest)
+	in := new(emptypb.Empty)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
@@ -288,7 +289,7 @@ func _KeyRangeService_ListAllKeyRanges_Handler(srv interface{}, ctx context.Cont
 		FullMethod: KeyRangeService_ListAllKeyRanges_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(KeyRangeServiceServer).ListAllKeyRanges(ctx, req.(*ListAllKeyRangesRequest))
+		return srv.(KeyRangeServiceServer).ListAllKeyRanges(ctx, req.(*emptypb.Empty))
 	}
 	return interceptor(ctx, in, info, handler)
 }
@@ -348,7 +349,7 @@ func _KeyRangeService_DropKeyRange_Handler(srv interface{}, ctx context.Context,
 }
 
 func _KeyRangeService_DropAllKeyRanges_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(DropAllKeyRangesRequest)
+	in := new(emptypb.Empty)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
@@ -360,7 +361,7 @@ func _KeyRangeService_DropAllKeyRanges_Handler(srv interface{}, ctx context.Cont
 		FullMethod: KeyRangeService_DropAllKeyRanges_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(KeyRangeServiceServer).DropAllKeyRanges(ctx, req.(*DropAllKeyRangesRequest))
+		return srv.(KeyRangeServiceServer).DropAllKeyRanges(ctx, req.(*emptypb.Empty))
 	}
 	return interceptor(ctx, in, info, handler)
 }
diff --git a/pkg/protos/pools.pb.go b/pkg/protos/pools.pb.go
index 71ab2d6e0..c18855b8a 100644
--- a/pkg/protos/pools.pb.go
+++ b/pkg/protos/pools.pb.go
@@ -9,6 +9,7 @@ package proto
 import (
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 	reflect "reflect"
 	sync "sync"
 )
@@ -20,44 +21,6 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
-type ListPoolsRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *ListPoolsRequest) Reset() {
-	*x = ListPoolsRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_pools_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *ListPoolsRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*ListPoolsRequest) ProtoMessage() {}
-
-func (x *ListPoolsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_pools_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use ListPoolsRequest.ProtoReflect.Descriptor instead.
-func (*ListPoolsRequest) Descriptor() ([]byte, []int) {
-	return file_protos_pools_proto_rawDescGZIP(), []int{0}
-}
-
 type ListPoolsResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -69,7 +32,7 @@ type ListPoolsResponse struct {
 func (x *ListPoolsResponse) Reset() {
 	*x = ListPoolsResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_pools_proto_msgTypes[1]
+		mi := &file_protos_pools_proto_msgTypes[0]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -82,7 +45,7 @@ func (x *ListPoolsResponse) String() string {
 func (*ListPoolsResponse) ProtoMessage() {}
 
 func (x *ListPoolsResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_pools_proto_msgTypes[1]
+	mi := &file_protos_pools_proto_msgTypes[0]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -95,7 +58,7 @@ func (x *ListPoolsResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListPoolsResponse.ProtoReflect.Descriptor instead.
 func (*ListPoolsResponse) Descriptor() ([]byte, []int) {
-	return file_protos_pools_proto_rawDescGZIP(), []int{1}
+	return file_protos_pools_proto_rawDescGZIP(), []int{0}
 }
 
 func (x *ListPoolsResponse) GetPools() []*PoolInfo {
@@ -123,7 +86,7 @@ type PoolInfo struct {
 func (x *PoolInfo) Reset() {
 	*x = PoolInfo{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_pools_proto_msgTypes[2]
+		mi := &file_protos_pools_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -136,7 +99,7 @@ func (x *PoolInfo) String() string {
 func (*PoolInfo) ProtoMessage() {}
 
 func (x *PoolInfo) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_pools_proto_msgTypes[2]
+	mi := &file_protos_pools_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -149,7 +112,7 @@ func (x *PoolInfo) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use PoolInfo.ProtoReflect.Descriptor instead.
 func (*PoolInfo) Descriptor() ([]byte, []int) {
-	return file_protos_pools_proto_rawDescGZIP(), []int{2}
+	return file_protos_pools_proto_rawDescGZIP(), []int{1}
 }
 
 func (x *PoolInfo) GetId() string {
@@ -212,32 +175,32 @@ var File_protos_pools_proto protoreflect.FileDescriptor
 
 var file_protos_pools_proto_rawDesc = []byte{
 	0x0a, 0x12, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x73, 0x2f, 0x70, 0x6f, 0x6f, 0x6c, 0x73, 0x2e, 0x70,
-	0x72, 0x6f, 0x74, 0x6f, 0x12, 0x04, 0x73, 0x70, 0x71, 0x72, 0x22, 0x12, 0x0a, 0x10, 0x4c, 0x69,
-	0x73, 0x74, 0x50, 0x6f, 0x6f, 0x6c, 0x73, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x22, 0x39,
-	0x0a, 0x11, 0x4c, 0x69, 0x73, 0x74, 0x50, 0x6f, 0x6f, 0x6c, 0x73, 0x52, 0x65, 0x73, 0x70, 0x6f,
-	0x6e, 0x73, 0x65, 0x12, 0x24, 0x0a, 0x05, 0x70, 0x6f, 0x6f, 0x6c, 0x73, 0x18, 0x01, 0x20, 0x03,
-	0x28, 0x0b, 0x32, 0x0e, 0x2e, 0x73, 0x70, 0x71, 0x72, 0x2e, 0x50, 0x6f, 0x6f, 0x6c, 0x49, 0x6e,
-	0x66, 0x6f, 0x52, 0x05, 0x70, 0x6f, 0x6f, 0x6c, 0x73, 0x22, 0xd2, 0x01, 0x0a, 0x08, 0x50, 0x6f,
-	0x6f, 0x6c, 0x49, 0x6e, 0x66, 0x6f, 0x12, 0x0e, 0x0a, 0x02, 0x49, 0x64, 0x18, 0x01, 0x20, 0x01,
-	0x28, 0x09, 0x52, 0x02, 0x49, 0x64, 0x12, 0x0e, 0x0a, 0x02, 0x44, 0x42, 0x18, 0x02, 0x20, 0x01,
-	0x28, 0x09, 0x52, 0x02, 0x44, 0x42, 0x12, 0x10, 0x0a, 0x03, 0x55, 0x73, 0x72, 0x18, 0x03, 0x20,
-	0x01, 0x28, 0x09, 0x52, 0x03, 0x55, 0x73, 0x72, 0x12, 0x12, 0x0a, 0x04, 0x48, 0x6f, 0x73, 0x74,
-	0x18, 0x04, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x48, 0x6f, 0x73, 0x74, 0x12, 0x1c, 0x0a, 0x09,
-	0x43, 0x6f, 0x6e, 0x6e, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x18, 0x05, 0x20, 0x01, 0x28, 0x03, 0x52,
-	0x09, 0x43, 0x6f, 0x6e, 0x6e, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x12, 0x24, 0x0a, 0x0d, 0x49, 0x64,
-	0x6c, 0x65, 0x43, 0x6f, 0x6e, 0x6e, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x18, 0x06, 0x20, 0x01, 0x28,
-	0x03, 0x52, 0x0d, 0x49, 0x64, 0x6c, 0x65, 0x43, 0x6f, 0x6e, 0x6e, 0x43, 0x6f, 0x75, 0x6e, 0x74,
-	0x12, 0x1c, 0x0a, 0x09, 0x51, 0x75, 0x65, 0x75, 0x65, 0x53, 0x69, 0x7a, 0x65, 0x18, 0x07, 0x20,
-	0x01, 0x28, 0x03, 0x52, 0x09, 0x51, 0x75, 0x65, 0x75, 0x65, 0x53, 0x69, 0x7a, 0x65, 0x12, 0x1e,
-	0x0a, 0x0a, 0x52, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x4e, 0x61, 0x6d, 0x65, 0x18, 0x08, 0x20, 0x01,
-	0x28, 0x09, 0x52, 0x0a, 0x52, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x4e, 0x61, 0x6d, 0x65, 0x32, 0x4d,
-	0x0a, 0x0b, 0x50, 0x6f, 0x6f, 0x6c, 0x53, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x12, 0x3e, 0x0a,
-	0x09, 0x4c, 0x69, 0x73, 0x74, 0x50, 0x6f, 0x6f, 0x6c, 0x73, 0x12, 0x16, 0x2e, 0x73, 0x70, 0x71,
-	0x72, 0x2e, 0x4c, 0x69, 0x73, 0x74, 0x50, 0x6f, 0x6f, 0x6c, 0x73, 0x52, 0x65, 0x71, 0x75, 0x65,
-	0x73, 0x74, 0x1a, 0x17, 0x2e, 0x73, 0x70, 0x71, 0x72, 0x2e, 0x4c, 0x69, 0x73, 0x74, 0x50, 0x6f,
-	0x6f, 0x6c, 0x73, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x42, 0x0c, 0x5a,
-	0x0a, 0x73, 0x70, 0x71, 0x72, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x06, 0x70, 0x72, 0x6f,
-	0x74, 0x6f, 0x33,
+	0x72, 0x6f, 0x74, 0x6f, 0x12, 0x04, 0x73, 0x70, 0x71, 0x72, 0x1a, 0x1b, 0x67, 0x6f, 0x6f, 0x67,
+	0x6c, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x65, 0x6d, 0x70, 0x74,
+	0x79, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x39, 0x0a, 0x11, 0x4c, 0x69, 0x73, 0x74, 0x50,
+	0x6f, 0x6f, 0x6c, 0x73, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x24, 0x0a, 0x05,
+	0x70, 0x6f, 0x6f, 0x6c, 0x73, 0x18, 0x01, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x0e, 0x2e, 0x73, 0x70,
+	0x71, 0x72, 0x2e, 0x50, 0x6f, 0x6f, 0x6c, 0x49, 0x6e, 0x66, 0x6f, 0x52, 0x05, 0x70, 0x6f, 0x6f,
+	0x6c, 0x73, 0x22, 0xd2, 0x01, 0x0a, 0x08, 0x50, 0x6f, 0x6f, 0x6c, 0x49, 0x6e, 0x66, 0x6f, 0x12,
+	0x0e, 0x0a, 0x02, 0x49, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x02, 0x49, 0x64, 0x12,
+	0x0e, 0x0a, 0x02, 0x44, 0x42, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x02, 0x44, 0x42, 0x12,
+	0x10, 0x0a, 0x03, 0x55, 0x73, 0x72, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52, 0x03, 0x55, 0x73,
+	0x72, 0x12, 0x12, 0x0a, 0x04, 0x48, 0x6f, 0x73, 0x74, 0x18, 0x04, 0x20, 0x01, 0x28, 0x09, 0x52,
+	0x04, 0x48, 0x6f, 0x73, 0x74, 0x12, 0x1c, 0x0a, 0x09, 0x43, 0x6f, 0x6e, 0x6e, 0x43, 0x6f, 0x75,
+	0x6e, 0x74, 0x18, 0x05, 0x20, 0x01, 0x28, 0x03, 0x52, 0x09, 0x43, 0x6f, 0x6e, 0x6e, 0x43, 0x6f,
+	0x75, 0x6e, 0x74, 0x12, 0x24, 0x0a, 0x0d, 0x49, 0x64, 0x6c, 0x65, 0x43, 0x6f, 0x6e, 0x6e, 0x43,
+	0x6f, 0x75, 0x6e, 0x74, 0x18, 0x06, 0x20, 0x01, 0x28, 0x03, 0x52, 0x0d, 0x49, 0x64, 0x6c, 0x65,
+	0x43, 0x6f, 0x6e, 0x6e, 0x43, 0x6f, 0x75, 0x6e, 0x74, 0x12, 0x1c, 0x0a, 0x09, 0x51, 0x75, 0x65,
+	0x75, 0x65, 0x53, 0x69, 0x7a, 0x65, 0x18, 0x07, 0x20, 0x01, 0x28, 0x03, 0x52, 0x09, 0x51, 0x75,
+	0x65, 0x75, 0x65, 0x53, 0x69, 0x7a, 0x65, 0x12, 0x1e, 0x0a, 0x0a, 0x52, 0x6f, 0x75, 0x74, 0x65,
+	0x72, 0x4e, 0x61, 0x6d, 0x65, 0x18, 0x08, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0a, 0x52, 0x6f, 0x75,
+	0x74, 0x65, 0x72, 0x4e, 0x61, 0x6d, 0x65, 0x32, 0x4d, 0x0a, 0x0b, 0x50, 0x6f, 0x6f, 0x6c, 0x53,
+	0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x12, 0x3e, 0x0a, 0x09, 0x4c, 0x69, 0x73, 0x74, 0x50, 0x6f,
+	0x6f, 0x6c, 0x73, 0x12, 0x16, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f,
+	0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x45, 0x6d, 0x70, 0x74, 0x79, 0x1a, 0x17, 0x2e, 0x73, 0x70,
+	0x71, 0x72, 0x2e, 0x4c, 0x69, 0x73, 0x74, 0x50, 0x6f, 0x6f, 0x6c, 0x73, 0x52, 0x65, 0x73, 0x70,
+	0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x42, 0x0c, 0x5a, 0x0a, 0x73, 0x70, 0x71, 0x72, 0x2f, 0x70,
+	0x72, 0x6f, 0x74, 0x6f, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -252,16 +215,16 @@ func file_protos_pools_proto_rawDescGZIP() []byte {
 	return file_protos_pools_proto_rawDescData
 }
 
-var file_protos_pools_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
+var file_protos_pools_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
 var file_protos_pools_proto_goTypes = []interface{}{
-	(*ListPoolsRequest)(nil),  // 0: spqr.ListPoolsRequest
-	(*ListPoolsResponse)(nil), // 1: spqr.ListPoolsResponse
-	(*PoolInfo)(nil),          // 2: spqr.PoolInfo
+	(*ListPoolsResponse)(nil), // 0: spqr.ListPoolsResponse
+	(*PoolInfo)(nil),          // 1: spqr.PoolInfo
+	(*emptypb.Empty)(nil),     // 2: google.protobuf.Empty
 }
 var file_protos_pools_proto_depIdxs = []int32{
-	2, // 0: spqr.ListPoolsResponse.pools:type_name -> spqr.PoolInfo
-	0, // 1: spqr.PoolService.ListPools:input_type -> spqr.ListPoolsRequest
-	1, // 2: spqr.PoolService.ListPools:output_type -> spqr.ListPoolsResponse
+	1, // 0: spqr.ListPoolsResponse.pools:type_name -> spqr.PoolInfo
+	2, // 1: spqr.PoolService.ListPools:input_type -> google.protobuf.Empty
+	0, // 2: spqr.PoolService.ListPools:output_type -> spqr.ListPoolsResponse
 	2, // [2:3] is the sub-list for method output_type
 	1, // [1:2] is the sub-list for method input_type
 	1, // [1:1] is the sub-list for extension type_name
@@ -276,18 +239,6 @@ func file_protos_pools_proto_init() {
 	}
 	if !protoimpl.UnsafeEnabled {
 		file_protos_pools_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListPoolsRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_pools_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ListPoolsResponse); i {
 			case 0:
 				return &v.state
@@ -299,7 +250,7 @@ func file_protos_pools_proto_init() {
 				return nil
 			}
 		}
-		file_protos_pools_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_pools_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*PoolInfo); i {
 			case 0:
 				return &v.state
@@ -318,7 +269,7 @@ func file_protos_pools_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_protos_pools_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   3,
+			NumMessages:   2,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/pkg/protos/pools_grpc.pb.go b/pkg/protos/pools_grpc.pb.go
index d42a0d026..3267db17a 100644
--- a/pkg/protos/pools_grpc.pb.go
+++ b/pkg/protos/pools_grpc.pb.go
@@ -11,6 +11,7 @@ import (
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
 	status "google.golang.org/grpc/status"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 )
 
 // This is a compile-time assertion to ensure that this generated file
@@ -26,7 +27,7 @@ const (
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
 type PoolServiceClient interface {
-	ListPools(ctx context.Context, in *ListPoolsRequest, opts ...grpc.CallOption) (*ListPoolsResponse, error)
+	ListPools(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*ListPoolsResponse, error)
 }
 
 type poolServiceClient struct {
@@ -37,7 +38,7 @@ func NewPoolServiceClient(cc grpc.ClientConnInterface) PoolServiceClient {
 	return &poolServiceClient{cc}
 }
 
-func (c *poolServiceClient) ListPools(ctx context.Context, in *ListPoolsRequest, opts ...grpc.CallOption) (*ListPoolsResponse, error) {
+func (c *poolServiceClient) ListPools(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*ListPoolsResponse, error) {
 	out := new(ListPoolsResponse)
 	err := c.cc.Invoke(ctx, PoolService_ListPools_FullMethodName, in, out, opts...)
 	if err != nil {
@@ -50,7 +51,7 @@ func (c *poolServiceClient) ListPools(ctx context.Context, in *ListPoolsRequest,
 // All implementations must embed UnimplementedPoolServiceServer
 // for forward compatibility
 type PoolServiceServer interface {
-	ListPools(context.Context, *ListPoolsRequest) (*ListPoolsResponse, error)
+	ListPools(context.Context, *emptypb.Empty) (*ListPoolsResponse, error)
 	mustEmbedUnimplementedPoolServiceServer()
 }
 
@@ -58,7 +59,7 @@ type PoolServiceServer interface {
 type UnimplementedPoolServiceServer struct {
 }
 
-func (UnimplementedPoolServiceServer) ListPools(context.Context, *ListPoolsRequest) (*ListPoolsResponse, error) {
+func (UnimplementedPoolServiceServer) ListPools(context.Context, *emptypb.Empty) (*ListPoolsResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ListPools not implemented")
 }
 func (UnimplementedPoolServiceServer) mustEmbedUnimplementedPoolServiceServer() {}
@@ -75,7 +76,7 @@ func RegisterPoolServiceServer(s grpc.ServiceRegistrar, srv PoolServiceServer) {
 }
 
 func _PoolService_ListPools_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(ListPoolsRequest)
+	in := new(emptypb.Empty)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
@@ -87,7 +88,7 @@ func _PoolService_ListPools_Handler(srv interface{}, ctx context.Context, dec fu
 		FullMethod: PoolService_ListPools_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(PoolServiceServer).ListPools(ctx, req.(*ListPoolsRequest))
+		return srv.(PoolServiceServer).ListPools(ctx, req.(*emptypb.Empty))
 	}
 	return interceptor(ctx, in, info, handler)
 }
diff --git a/pkg/protos/router.pb.go b/pkg/protos/router.pb.go
index 6d6c2491b..5c6bef579 100644
--- a/pkg/protos/router.pb.go
+++ b/pkg/protos/router.pb.go
@@ -9,6 +9,7 @@ package proto
 import (
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 	reflect "reflect"
 	sync "sync"
 )
@@ -129,44 +130,6 @@ func (x *Router) GetStatus() RouterStatus {
 	return RouterStatus_CLOSED
 }
 
-type ListRoutersRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *ListRoutersRequest) Reset() {
-	*x = ListRoutersRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_router_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *ListRoutersRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*ListRoutersRequest) ProtoMessage() {}
-
-func (x *ListRoutersRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_router_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use ListRoutersRequest.ProtoReflect.Descriptor instead.
-func (*ListRoutersRequest) Descriptor() ([]byte, []int) {
-	return file_protos_router_proto_rawDescGZIP(), []int{1}
-}
-
 type ListRoutersReply struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -178,7 +141,7 @@ type ListRoutersReply struct {
 func (x *ListRoutersReply) Reset() {
 	*x = ListRoutersReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_router_proto_msgTypes[2]
+		mi := &file_protos_router_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -191,7 +154,7 @@ func (x *ListRoutersReply) String() string {
 func (*ListRoutersReply) ProtoMessage() {}
 
 func (x *ListRoutersReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_router_proto_msgTypes[2]
+	mi := &file_protos_router_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -204,7 +167,7 @@ func (x *ListRoutersReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListRoutersReply.ProtoReflect.Descriptor instead.
 func (*ListRoutersReply) Descriptor() ([]byte, []int) {
-	return file_protos_router_proto_rawDescGZIP(), []int{2}
+	return file_protos_router_proto_rawDescGZIP(), []int{1}
 }
 
 func (x *ListRoutersReply) GetRouters() []*Router {
@@ -225,7 +188,7 @@ type AddRouterRequest struct {
 func (x *AddRouterRequest) Reset() {
 	*x = AddRouterRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_router_proto_msgTypes[3]
+		mi := &file_protos_router_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -238,7 +201,7 @@ func (x *AddRouterRequest) String() string {
 func (*AddRouterRequest) ProtoMessage() {}
 
 func (x *AddRouterRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_router_proto_msgTypes[3]
+	mi := &file_protos_router_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -251,7 +214,7 @@ func (x *AddRouterRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AddRouterRequest.ProtoReflect.Descriptor instead.
 func (*AddRouterRequest) Descriptor() ([]byte, []int) {
-	return file_protos_router_proto_rawDescGZIP(), []int{3}
+	return file_protos_router_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *AddRouterRequest) GetRouter() *Router {
@@ -272,7 +235,7 @@ type AddRouterReply struct {
 func (x *AddRouterReply) Reset() {
 	*x = AddRouterReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_router_proto_msgTypes[4]
+		mi := &file_protos_router_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -285,7 +248,7 @@ func (x *AddRouterReply) String() string {
 func (*AddRouterReply) ProtoMessage() {}
 
 func (x *AddRouterReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_router_proto_msgTypes[4]
+	mi := &file_protos_router_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -298,7 +261,7 @@ func (x *AddRouterReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AddRouterReply.ProtoReflect.Descriptor instead.
 func (*AddRouterReply) Descriptor() ([]byte, []int) {
-	return file_protos_router_proto_rawDescGZIP(), []int{4}
+	return file_protos_router_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *AddRouterReply) GetId() string {
@@ -319,7 +282,7 @@ type RemoveRouterRequest struct {
 func (x *RemoveRouterRequest) Reset() {
 	*x = RemoveRouterRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_router_proto_msgTypes[5]
+		mi := &file_protos_router_proto_msgTypes[4]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -332,7 +295,7 @@ func (x *RemoveRouterRequest) String() string {
 func (*RemoveRouterRequest) ProtoMessage() {}
 
 func (x *RemoveRouterRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_router_proto_msgTypes[5]
+	mi := &file_protos_router_proto_msgTypes[4]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -345,7 +308,7 @@ func (x *RemoveRouterRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use RemoveRouterRequest.ProtoReflect.Descriptor instead.
 func (*RemoveRouterRequest) Descriptor() ([]byte, []int) {
-	return file_protos_router_proto_rawDescGZIP(), []int{5}
+	return file_protos_router_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *RemoveRouterRequest) GetId() string {
@@ -355,44 +318,6 @@ func (x *RemoveRouterRequest) GetId() string {
 	return ""
 }
 
-type RemoveRouterReply struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *RemoveRouterReply) Reset() {
-	*x = RemoveRouterReply{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_router_proto_msgTypes[6]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *RemoveRouterReply) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*RemoveRouterReply) ProtoMessage() {}
-
-func (x *RemoveRouterReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_router_proto_msgTypes[6]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use RemoveRouterReply.ProtoReflect.Descriptor instead.
-func (*RemoveRouterReply) Descriptor() ([]byte, []int) {
-	return file_protos_router_proto_rawDescGZIP(), []int{6}
-}
-
 type SyncMetadataRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -404,7 +329,7 @@ type SyncMetadataRequest struct {
 func (x *SyncMetadataRequest) Reset() {
 	*x = SyncMetadataRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_router_proto_msgTypes[7]
+		mi := &file_protos_router_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -417,7 +342,7 @@ func (x *SyncMetadataRequest) String() string {
 func (*SyncMetadataRequest) ProtoMessage() {}
 
 func (x *SyncMetadataRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_router_proto_msgTypes[7]
+	mi := &file_protos_router_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -430,7 +355,7 @@ func (x *SyncMetadataRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SyncMetadataRequest.ProtoReflect.Descriptor instead.
 func (*SyncMetadataRequest) Descriptor() ([]byte, []int) {
-	return file_protos_router_proto_rawDescGZIP(), []int{7}
+	return file_protos_router_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *SyncMetadataRequest) GetRouter() *Router {
@@ -440,97 +365,56 @@ func (x *SyncMetadataRequest) GetRouter() *Router {
 	return nil
 }
 
-type SyncMetadataReply struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *SyncMetadataReply) Reset() {
-	*x = SyncMetadataReply{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_router_proto_msgTypes[8]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *SyncMetadataReply) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*SyncMetadataReply) ProtoMessage() {}
-
-func (x *SyncMetadataReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_router_proto_msgTypes[8]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use SyncMetadataReply.ProtoReflect.Descriptor instead.
-func (*SyncMetadataReply) Descriptor() ([]byte, []int) {
-	return file_protos_router_proto_rawDescGZIP(), []int{8}
-}
-
 var File_protos_router_proto protoreflect.FileDescriptor
 
 var file_protos_router_proto_rawDesc = []byte{
 	0x0a, 0x13, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x73, 0x2f, 0x72, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x2e,
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+	0x61, 0x74, 0x75, 0x73, 0x12, 0x0a, 0x0a, 0x06, 0x43, 0x4c, 0x4f, 0x53, 0x45, 0x44, 0x10, 0x00,
+	0x12, 0x0a, 0x0a, 0x06, 0x4f, 0x50, 0x45, 0x4e, 0x45, 0x44, 0x10, 0x01, 0x32, 0x97, 0x02, 0x0a,
+	0x0d, 0x52, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x53, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x12, 0x3f,
+	0x0a, 0x0b, 0x4c, 0x69, 0x73, 0x74, 0x52, 0x6f, 0x75, 0x74, 0x65, 0x72, 0x73, 0x12, 0x16, 0x2e,
+	0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e,
+	0x45, 0x6d, 0x70, 0x74, 0x79, 0x1a, 0x16, 0x2e, 0x73, 0x70, 0x71, 0x72, 0x2e, 0x4c, 0x69, 0x73,
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 	0x70, 0x71, 0x72, 0x2e, 0x52, 0x65, 0x6d, 0x6f, 0x76, 0x65, 0x52, 0x6f, 0x75, 0x74, 0x65, 0x72,
-	0x52, 0x65, 0x70, 0x6c, 0x79, 0x22, 0x00, 0x12, 0x44, 0x0a, 0x0c, 0x53, 0x79, 0x6e, 0x63, 0x4d,
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-	0x73, 0x74, 0x1a, 0x17, 0x2e, 0x73, 0x70, 0x71, 0x72, 0x2e, 0x53, 0x79, 0x6e, 0x63, 0x4d, 0x65,
-	0x74, 0x61, 0x64, 0x61, 0x74, 0x61, 0x52, 0x65, 0x70, 0x6c, 0x79, 0x22, 0x00, 0x42, 0x0c, 0x5a,
-	0x0a, 0x73, 0x70, 0x71, 0x72, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x06, 0x70, 0x72, 0x6f,
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+	0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x45, 0x6d, 0x70, 0x74, 0x79, 0x22,
+	0x00, 0x12, 0x43, 0x0a, 0x0c, 0x53, 0x79, 0x6e, 0x63, 0x4d, 0x65, 0x74, 0x61, 0x64, 0x61, 0x74,
+	0x61, 0x12, 0x19, 0x2e, 0x73, 0x70, 0x71, 0x72, 0x2e, 0x53, 0x79, 0x6e, 0x63, 0x4d, 0x65, 0x74,
+	0x61, 0x64, 0x61, 0x74, 0x61, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x16, 0x2e, 0x67,
+	0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x45,
+	0x6d, 0x70, 0x74, 0x79, 0x22, 0x00, 0x42, 0x0c, 0x5a, 0x0a, 0x73, 0x70, 0x71, 0x72, 0x2f, 0x70,
+	0x72, 0x6f, 0x74, 0x6f, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -546,32 +430,30 @@ func file_protos_router_proto_rawDescGZIP() []byte {
 }
 
 var file_protos_router_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
-var file_protos_router_proto_msgTypes = make([]protoimpl.MessageInfo, 9)
+var file_protos_router_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
 var file_protos_router_proto_goTypes = []interface{}{
 	(RouterStatus)(0),           // 0: spqr.RouterStatus
 	(*Router)(nil),              // 1: spqr.Router
-	(*ListRoutersRequest)(nil),  // 2: spqr.ListRoutersRequest
-	(*ListRoutersReply)(nil),    // 3: spqr.ListRoutersReply
-	(*AddRouterRequest)(nil),    // 4: spqr.AddRouterRequest
-	(*AddRouterReply)(nil),      // 5: spqr.AddRouterReply
-	(*RemoveRouterRequest)(nil), // 6: spqr.RemoveRouterRequest
-	(*RemoveRouterReply)(nil),   // 7: spqr.RemoveRouterReply
-	(*SyncMetadataRequest)(nil), // 8: spqr.SyncMetadataRequest
-	(*SyncMetadataReply)(nil),   // 9: spqr.SyncMetadataReply
+	(*ListRoutersReply)(nil),    // 2: spqr.ListRoutersReply
+	(*AddRouterRequest)(nil),    // 3: spqr.AddRouterRequest
+	(*AddRouterReply)(nil),      // 4: spqr.AddRouterReply
+	(*RemoveRouterRequest)(nil), // 5: spqr.RemoveRouterRequest
+	(*SyncMetadataRequest)(nil), // 6: spqr.SyncMetadataRequest
+	(*emptypb.Empty)(nil),       // 7: google.protobuf.Empty
 }
 var file_protos_router_proto_depIdxs = []int32{
 	0, // 0: spqr.Router.status:type_name -> spqr.RouterStatus
 	1, // 1: spqr.ListRoutersReply.routers:type_name -> spqr.Router
 	1, // 2: spqr.AddRouterRequest.router:type_name -> spqr.Router
 	1, // 3: spqr.SyncMetadataRequest.router:type_name -> spqr.Router
-	2, // 4: spqr.RouterService.ListRouters:input_type -> spqr.ListRoutersRequest
-	4, // 5: spqr.RouterService.AddRouter:input_type -> spqr.AddRouterRequest
-	6, // 6: spqr.RouterService.RemoveRouter:input_type -> spqr.RemoveRouterRequest
-	8, // 7: spqr.RouterService.SyncMetadata:input_type -> spqr.SyncMetadataRequest
-	3, // 8: spqr.RouterService.ListRouters:output_type -> spqr.ListRoutersReply
-	5, // 9: spqr.RouterService.AddRouter:output_type -> spqr.AddRouterReply
-	7, // 10: spqr.RouterService.RemoveRouter:output_type -> spqr.RemoveRouterReply
-	9, // 11: spqr.RouterService.SyncMetadata:output_type -> spqr.SyncMetadataReply
+	7, // 4: spqr.RouterService.ListRouters:input_type -> google.protobuf.Empty
+	3, // 5: spqr.RouterService.AddRouter:input_type -> spqr.AddRouterRequest
+	5, // 6: spqr.RouterService.RemoveRouter:input_type -> spqr.RemoveRouterRequest
+	6, // 7: spqr.RouterService.SyncMetadata:input_type -> spqr.SyncMetadataRequest
+	2, // 8: spqr.RouterService.ListRouters:output_type -> spqr.ListRoutersReply
+	4, // 9: spqr.RouterService.AddRouter:output_type -> spqr.AddRouterReply
+	7, // 10: spqr.RouterService.RemoveRouter:output_type -> google.protobuf.Empty
+	7, // 11: spqr.RouterService.SyncMetadata:output_type -> google.protobuf.Empty
 	8, // [8:12] is the sub-list for method output_type
 	4, // [4:8] is the sub-list for method input_type
 	4, // [4:4] is the sub-list for extension type_name
@@ -598,18 +480,6 @@ func file_protos_router_proto_init() {
 			}
 		}
 		file_protos_router_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListRoutersRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_router_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ListRoutersReply); i {
 			case 0:
 				return &v.state
@@ -621,7 +491,7 @@ func file_protos_router_proto_init() {
 				return nil
 			}
 		}
-		file_protos_router_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_router_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*AddRouterRequest); i {
 			case 0:
 				return &v.state
@@ -633,7 +503,7 @@ func file_protos_router_proto_init() {
 				return nil
 			}
 		}
-		file_protos_router_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_router_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*AddRouterReply); i {
 			case 0:
 				return &v.state
@@ -645,7 +515,7 @@ func file_protos_router_proto_init() {
 				return nil
 			}
 		}
-		file_protos_router_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_router_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*RemoveRouterRequest); i {
 			case 0:
 				return &v.state
@@ -657,19 +527,7 @@ func file_protos_router_proto_init() {
 				return nil
 			}
 		}
-		file_protos_router_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RemoveRouterReply); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_router_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_router_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*SyncMetadataRequest); i {
 			case 0:
 				return &v.state
@@ -681,18 +539,6 @@ func file_protos_router_proto_init() {
 				return nil
 			}
 		}
-		file_protos_router_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SyncMetadataReply); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
@@ -700,7 +546,7 @@ func file_protos_router_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_protos_router_proto_rawDesc,
 			NumEnums:      1,
-			NumMessages:   9,
+			NumMessages:   6,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/pkg/protos/router_grpc.pb.go b/pkg/protos/router_grpc.pb.go
index 5ec475396..e34f22dc6 100644
--- a/pkg/protos/router_grpc.pb.go
+++ b/pkg/protos/router_grpc.pb.go
@@ -11,6 +11,7 @@ import (
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
 	status "google.golang.org/grpc/status"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 )
 
 // This is a compile-time assertion to ensure that this generated file
@@ -29,10 +30,10 @@ const (
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
 type RouterServiceClient interface {
-	ListRouters(ctx context.Context, in *ListRoutersRequest, opts ...grpc.CallOption) (*ListRoutersReply, error)
+	ListRouters(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*ListRoutersReply, error)
 	AddRouter(ctx context.Context, in *AddRouterRequest, opts ...grpc.CallOption) (*AddRouterReply, error)
-	RemoveRouter(ctx context.Context, in *RemoveRouterRequest, opts ...grpc.CallOption) (*RemoveRouterReply, error)
-	SyncMetadata(ctx context.Context, in *SyncMetadataRequest, opts ...grpc.CallOption) (*SyncMetadataReply, error)
+	RemoveRouter(ctx context.Context, in *RemoveRouterRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
+	SyncMetadata(ctx context.Context, in *SyncMetadataRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 }
 
 type routerServiceClient struct {
@@ -43,7 +44,7 @@ func NewRouterServiceClient(cc grpc.ClientConnInterface) RouterServiceClient {
 	return &routerServiceClient{cc}
 }
 
-func (c *routerServiceClient) ListRouters(ctx context.Context, in *ListRoutersRequest, opts ...grpc.CallOption) (*ListRoutersReply, error) {
+func (c *routerServiceClient) ListRouters(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*ListRoutersReply, error) {
 	out := new(ListRoutersReply)
 	err := c.cc.Invoke(ctx, RouterService_ListRouters_FullMethodName, in, out, opts...)
 	if err != nil {
@@ -61,8 +62,8 @@ func (c *routerServiceClient) AddRouter(ctx context.Context, in *AddRouterReques
 	return out, nil
 }
 
-func (c *routerServiceClient) RemoveRouter(ctx context.Context, in *RemoveRouterRequest, opts ...grpc.CallOption) (*RemoveRouterReply, error) {
-	out := new(RemoveRouterReply)
+func (c *routerServiceClient) RemoveRouter(ctx context.Context, in *RemoveRouterRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
 	err := c.cc.Invoke(ctx, RouterService_RemoveRouter_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
@@ -70,8 +71,8 @@ func (c *routerServiceClient) RemoveRouter(ctx context.Context, in *RemoveRouter
 	return out, nil
 }
 
-func (c *routerServiceClient) SyncMetadata(ctx context.Context, in *SyncMetadataRequest, opts ...grpc.CallOption) (*SyncMetadataReply, error) {
-	out := new(SyncMetadataReply)
+func (c *routerServiceClient) SyncMetadata(ctx context.Context, in *SyncMetadataRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
 	err := c.cc.Invoke(ctx, RouterService_SyncMetadata_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
@@ -83,10 +84,10 @@ func (c *routerServiceClient) SyncMetadata(ctx context.Context, in *SyncMetadata
 // All implementations must embed UnimplementedRouterServiceServer
 // for forward compatibility
 type RouterServiceServer interface {
-	ListRouters(context.Context, *ListRoutersRequest) (*ListRoutersReply, error)
+	ListRouters(context.Context, *emptypb.Empty) (*ListRoutersReply, error)
 	AddRouter(context.Context, *AddRouterRequest) (*AddRouterReply, error)
-	RemoveRouter(context.Context, *RemoveRouterRequest) (*RemoveRouterReply, error)
-	SyncMetadata(context.Context, *SyncMetadataRequest) (*SyncMetadataReply, error)
+	RemoveRouter(context.Context, *RemoveRouterRequest) (*emptypb.Empty, error)
+	SyncMetadata(context.Context, *SyncMetadataRequest) (*emptypb.Empty, error)
 	mustEmbedUnimplementedRouterServiceServer()
 }
 
@@ -94,16 +95,16 @@ type RouterServiceServer interface {
 type UnimplementedRouterServiceServer struct {
 }
 
-func (UnimplementedRouterServiceServer) ListRouters(context.Context, *ListRoutersRequest) (*ListRoutersReply, error) {
+func (UnimplementedRouterServiceServer) ListRouters(context.Context, *emptypb.Empty) (*ListRoutersReply, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ListRouters not implemented")
 }
 func (UnimplementedRouterServiceServer) AddRouter(context.Context, *AddRouterRequest) (*AddRouterReply, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method AddRouter not implemented")
 }
-func (UnimplementedRouterServiceServer) RemoveRouter(context.Context, *RemoveRouterRequest) (*RemoveRouterReply, error) {
+func (UnimplementedRouterServiceServer) RemoveRouter(context.Context, *RemoveRouterRequest) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method RemoveRouter not implemented")
 }
-func (UnimplementedRouterServiceServer) SyncMetadata(context.Context, *SyncMetadataRequest) (*SyncMetadataReply, error) {
+func (UnimplementedRouterServiceServer) SyncMetadata(context.Context, *SyncMetadataRequest) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method SyncMetadata not implemented")
 }
 func (UnimplementedRouterServiceServer) mustEmbedUnimplementedRouterServiceServer() {}
@@ -120,7 +121,7 @@ func RegisterRouterServiceServer(s grpc.ServiceRegistrar, srv RouterServiceServe
 }
 
 func _RouterService_ListRouters_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(ListRoutersRequest)
+	in := new(emptypb.Empty)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
@@ -132,7 +133,7 @@ func _RouterService_ListRouters_Handler(srv interface{}, ctx context.Context, de
 		FullMethod: RouterService_ListRouters_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(RouterServiceServer).ListRouters(ctx, req.(*ListRoutersRequest))
+		return srv.(RouterServiceServer).ListRouters(ctx, req.(*emptypb.Empty))
 	}
 	return interceptor(ctx, in, info, handler)
 }
diff --git a/pkg/protos/shard.pb.go b/pkg/protos/shard.pb.go
index a279fd968..b1e7ce694 100644
--- a/pkg/protos/shard.pb.go
+++ b/pkg/protos/shard.pb.go
@@ -9,6 +9,7 @@ package proto
 import (
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 	reflect "reflect"
 	sync "sync"
 )
@@ -177,44 +178,6 @@ func (x *ShardReply) GetShard() *Shard {
 	return nil
 }
 
-type ListShardsRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *ListShardsRequest) Reset() {
-	*x = ListShardsRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_shard_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *ListShardsRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*ListShardsRequest) ProtoMessage() {}
-
-func (x *ListShardsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_shard_proto_msgTypes[3]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use ListShardsRequest.ProtoReflect.Descriptor instead.
-func (*ListShardsRequest) Descriptor() ([]byte, []int) {
-	return file_protos_shard_proto_rawDescGZIP(), []int{3}
-}
-
 type ShardRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -226,7 +189,7 @@ type ShardRequest struct {
 func (x *ShardRequest) Reset() {
 	*x = ShardRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_shard_proto_msgTypes[4]
+		mi := &file_protos_shard_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -239,7 +202,7 @@ func (x *ShardRequest) String() string {
 func (*ShardRequest) ProtoMessage() {}
 
 func (x *ShardRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_shard_proto_msgTypes[4]
+	mi := &file_protos_shard_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -252,7 +215,7 @@ func (x *ShardRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ShardRequest.ProtoReflect.Descriptor instead.
 func (*ShardRequest) Descriptor() ([]byte, []int) {
-	return file_protos_shard_proto_rawDescGZIP(), []int{4}
+	return file_protos_shard_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *ShardRequest) GetId() string {
@@ -273,7 +236,7 @@ type ListShardsReply struct {
 func (x *ListShardsReply) Reset() {
 	*x = ListShardsReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_shard_proto_msgTypes[5]
+		mi := &file_protos_shard_proto_msgTypes[4]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -286,7 +249,7 @@ func (x *ListShardsReply) String() string {
 func (*ListShardsReply) ProtoMessage() {}
 
 func (x *ListShardsReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_shard_proto_msgTypes[5]
+	mi := &file_protos_shard_proto_msgTypes[4]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -299,7 +262,7 @@ func (x *ListShardsReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListShardsReply.ProtoReflect.Descriptor instead.
 func (*ListShardsReply) Descriptor() ([]byte, []int) {
-	return file_protos_shard_proto_rawDescGZIP(), []int{5}
+	return file_protos_shard_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *ListShardsReply) GetShards() []*Shard {
@@ -320,7 +283,7 @@ type AddShardRequest struct {
 func (x *AddShardRequest) Reset() {
 	*x = AddShardRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_shard_proto_msgTypes[6]
+		mi := &file_protos_shard_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -333,7 +296,7 @@ func (x *AddShardRequest) String() string {
 func (*AddShardRequest) ProtoMessage() {}
 
 func (x *AddShardRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_shard_proto_msgTypes[6]
+	mi := &file_protos_shard_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -346,7 +309,7 @@ func (x *AddShardRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AddShardRequest.ProtoReflect.Descriptor instead.
 func (*AddShardRequest) Descriptor() ([]byte, []int) {
-	return file_protos_shard_proto_rawDescGZIP(), []int{6}
+	return file_protos_shard_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *AddShardRequest) GetShard() *Shard {
@@ -356,44 +319,6 @@ func (x *AddShardRequest) GetShard() *Shard {
 	return nil
 }
 
-type AddShardReply struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *AddShardReply) Reset() {
-	*x = AddShardReply{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_shard_proto_msgTypes[7]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *AddShardReply) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*AddShardReply) ProtoMessage() {}
-
-func (x *AddShardReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_shard_proto_msgTypes[7]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use AddShardReply.ProtoReflect.Descriptor instead.
-func (*AddShardReply) Descriptor() ([]byte, []int) {
-	return file_protos_shard_proto_rawDescGZIP(), []int{7}
-}
-
 type AddWorldShardRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -405,7 +330,7 @@ type AddWorldShardRequest struct {
 func (x *AddWorldShardRequest) Reset() {
 	*x = AddWorldShardRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_shard_proto_msgTypes[8]
+		mi := &file_protos_shard_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -418,7 +343,7 @@ func (x *AddWorldShardRequest) String() string {
 func (*AddWorldShardRequest) ProtoMessage() {}
 
 func (x *AddWorldShardRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_shard_proto_msgTypes[8]
+	mi := &file_protos_shard_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -431,7 +356,7 @@ func (x *AddWorldShardRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use AddWorldShardRequest.ProtoReflect.Descriptor instead.
 func (*AddWorldShardRequest) Descriptor() ([]byte, []int) {
-	return file_protos_shard_proto_rawDescGZIP(), []int{8}
+	return file_protos_shard_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *AddWorldShardRequest) GetShard() *Shard {
@@ -445,49 +370,49 @@ var File_protos_shard_proto protoreflect.FileDescriptor
 
 var file_protos_shard_proto_rawDesc = []byte{
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+	0x57, 0x6f, 0x72, 0x6c, 0x64, 0x53, 0x68, 0x61, 0x72, 0x64, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73,
+	0x74, 0x1a, 0x16, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+	0x62, 0x75, 0x66, 0x2e, 0x45, 0x6d, 0x70, 0x74, 0x79, 0x22, 0x00, 0x12, 0x32, 0x0a, 0x08, 0x47,
+	0x65, 0x74, 0x53, 0x68, 0x61, 0x72, 0x64, 0x12, 0x12, 0x2e, 0x73, 0x70, 0x71, 0x72, 0x2e, 0x53,
+	0x68, 0x61, 0x72, 0x64, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x10, 0x2e, 0x73, 0x70,
+	0x71, 0x72, 0x2e, 0x53, 0x68, 0x61, 0x72, 0x64, 0x52, 0x65, 0x70, 0x6c, 0x79, 0x22, 0x00, 0x42,
+	0x0c, 0x5a, 0x0a, 0x73, 0x70, 0x71, 0x72, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x06, 0x70,
+	0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -502,30 +427,29 @@ func file_protos_shard_proto_rawDescGZIP() []byte {
 	return file_protos_shard_proto_rawDescData
 }
 
-var file_protos_shard_proto_msgTypes = make([]protoimpl.MessageInfo, 9)
+var file_protos_shard_proto_msgTypes = make([]protoimpl.MessageInfo, 7)
 var file_protos_shard_proto_goTypes = []interface{}{
 	(*Shard)(nil),                // 0: spqr.Shard
 	(*ShardInfo)(nil),            // 1: spqr.ShardInfo
 	(*ShardReply)(nil),           // 2: spqr.ShardReply
-	(*ListShardsRequest)(nil),    // 3: spqr.ListShardsRequest
-	(*ShardRequest)(nil),         // 4: spqr.ShardRequest
-	(*ListShardsReply)(nil),      // 5: spqr.ListShardsReply
-	(*AddShardRequest)(nil),      // 6: spqr.AddShardRequest
-	(*AddShardReply)(nil),        // 7: spqr.AddShardReply
-	(*AddWorldShardRequest)(nil), // 8: spqr.AddWorldShardRequest
+	(*ShardRequest)(nil),         // 3: spqr.ShardRequest
+	(*ListShardsReply)(nil),      // 4: spqr.ListShardsReply
+	(*AddShardRequest)(nil),      // 5: spqr.AddShardRequest
+	(*AddWorldShardRequest)(nil), // 6: spqr.AddWorldShardRequest
+	(*emptypb.Empty)(nil),        // 7: google.protobuf.Empty
 }
 var file_protos_shard_proto_depIdxs = []int32{
 	0, // 0: spqr.ShardReply.shard:type_name -> spqr.Shard
 	0, // 1: spqr.ListShardsReply.shards:type_name -> spqr.Shard
 	0, // 2: spqr.AddShardRequest.shard:type_name -> spqr.Shard
 	0, // 3: spqr.AddWorldShardRequest.shard:type_name -> spqr.Shard
-	3, // 4: spqr.ShardService.ListShards:input_type -> spqr.ListShardsRequest
-	6, // 5: spqr.ShardService.AddDataShard:input_type -> spqr.AddShardRequest
-	8, // 6: spqr.ShardService.AddWorldShard:input_type -> spqr.AddWorldShardRequest
-	4, // 7: spqr.ShardService.GetShard:input_type -> spqr.ShardRequest
-	5, // 8: spqr.ShardService.ListShards:output_type -> spqr.ListShardsReply
-	7, // 9: spqr.ShardService.AddDataShard:output_type -> spqr.AddShardReply
-	7, // 10: spqr.ShardService.AddWorldShard:output_type -> spqr.AddShardReply
+	7, // 4: spqr.ShardService.ListShards:input_type -> google.protobuf.Empty
+	5, // 5: spqr.ShardService.AddDataShard:input_type -> spqr.AddShardRequest
+	6, // 6: spqr.ShardService.AddWorldShard:input_type -> spqr.AddWorldShardRequest
+	3, // 7: spqr.ShardService.GetShard:input_type -> spqr.ShardRequest
+	4, // 8: spqr.ShardService.ListShards:output_type -> spqr.ListShardsReply
+	7, // 9: spqr.ShardService.AddDataShard:output_type -> google.protobuf.Empty
+	7, // 10: spqr.ShardService.AddWorldShard:output_type -> google.protobuf.Empty
 	2, // 11: spqr.ShardService.GetShard:output_type -> spqr.ShardReply
 	8, // [8:12] is the sub-list for method output_type
 	4, // [4:8] is the sub-list for method input_type
@@ -577,18 +501,6 @@ func file_protos_shard_proto_init() {
 			}
 		}
 		file_protos_shard_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListShardsRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_shard_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ShardRequest); i {
 			case 0:
 				return &v.state
@@ -600,7 +512,7 @@ func file_protos_shard_proto_init() {
 				return nil
 			}
 		}
-		file_protos_shard_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_shard_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ListShardsReply); i {
 			case 0:
 				return &v.state
@@ -612,7 +524,7 @@ func file_protos_shard_proto_init() {
 				return nil
 			}
 		}
-		file_protos_shard_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_shard_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*AddShardRequest); i {
 			case 0:
 				return &v.state
@@ -624,19 +536,7 @@ func file_protos_shard_proto_init() {
 				return nil
 			}
 		}
-		file_protos_shard_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*AddShardReply); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_shard_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_shard_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*AddWorldShardRequest); i {
 			case 0:
 				return &v.state
@@ -655,7 +555,7 @@ func file_protos_shard_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_protos_shard_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   9,
+			NumMessages:   7,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/pkg/protos/shard_grpc.pb.go b/pkg/protos/shard_grpc.pb.go
index f65a69ccf..d7f1d85da 100644
--- a/pkg/protos/shard_grpc.pb.go
+++ b/pkg/protos/shard_grpc.pb.go
@@ -11,6 +11,7 @@ import (
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
 	status "google.golang.org/grpc/status"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 )
 
 // This is a compile-time assertion to ensure that this generated file
@@ -29,9 +30,9 @@ const (
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
 type ShardServiceClient interface {
-	ListShards(ctx context.Context, in *ListShardsRequest, opts ...grpc.CallOption) (*ListShardsReply, error)
-	AddDataShard(ctx context.Context, in *AddShardRequest, opts ...grpc.CallOption) (*AddShardReply, error)
-	AddWorldShard(ctx context.Context, in *AddWorldShardRequest, opts ...grpc.CallOption) (*AddShardReply, error)
+	ListShards(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*ListShardsReply, error)
+	AddDataShard(ctx context.Context, in *AddShardRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
+	AddWorldShard(ctx context.Context, in *AddWorldShardRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	GetShard(ctx context.Context, in *ShardRequest, opts ...grpc.CallOption) (*ShardReply, error)
 }
 
@@ -43,7 +44,7 @@ func NewShardServiceClient(cc grpc.ClientConnInterface) ShardServiceClient {
 	return &shardServiceClient{cc}
 }
 
-func (c *shardServiceClient) ListShards(ctx context.Context, in *ListShardsRequest, opts ...grpc.CallOption) (*ListShardsReply, error) {
+func (c *shardServiceClient) ListShards(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*ListShardsReply, error) {
 	out := new(ListShardsReply)
 	err := c.cc.Invoke(ctx, ShardService_ListShards_FullMethodName, in, out, opts...)
 	if err != nil {
@@ -52,8 +53,8 @@ func (c *shardServiceClient) ListShards(ctx context.Context, in *ListShardsReque
 	return out, nil
 }
 
-func (c *shardServiceClient) AddDataShard(ctx context.Context, in *AddShardRequest, opts ...grpc.CallOption) (*AddShardReply, error) {
-	out := new(AddShardReply)
+func (c *shardServiceClient) AddDataShard(ctx context.Context, in *AddShardRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
 	err := c.cc.Invoke(ctx, ShardService_AddDataShard_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
@@ -61,8 +62,8 @@ func (c *shardServiceClient) AddDataShard(ctx context.Context, in *AddShardReque
 	return out, nil
 }
 
-func (c *shardServiceClient) AddWorldShard(ctx context.Context, in *AddWorldShardRequest, opts ...grpc.CallOption) (*AddShardReply, error) {
-	out := new(AddShardReply)
+func (c *shardServiceClient) AddWorldShard(ctx context.Context, in *AddWorldShardRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
 	err := c.cc.Invoke(ctx, ShardService_AddWorldShard_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
@@ -83,9 +84,9 @@ func (c *shardServiceClient) GetShard(ctx context.Context, in *ShardRequest, opt
 // All implementations must embed UnimplementedShardServiceServer
 // for forward compatibility
 type ShardServiceServer interface {
-	ListShards(context.Context, *ListShardsRequest) (*ListShardsReply, error)
-	AddDataShard(context.Context, *AddShardRequest) (*AddShardReply, error)
-	AddWorldShard(context.Context, *AddWorldShardRequest) (*AddShardReply, error)
+	ListShards(context.Context, *emptypb.Empty) (*ListShardsReply, error)
+	AddDataShard(context.Context, *AddShardRequest) (*emptypb.Empty, error)
+	AddWorldShard(context.Context, *AddWorldShardRequest) (*emptypb.Empty, error)
 	GetShard(context.Context, *ShardRequest) (*ShardReply, error)
 	mustEmbedUnimplementedShardServiceServer()
 }
@@ -94,13 +95,13 @@ type ShardServiceServer interface {
 type UnimplementedShardServiceServer struct {
 }
 
-func (UnimplementedShardServiceServer) ListShards(context.Context, *ListShardsRequest) (*ListShardsReply, error) {
+func (UnimplementedShardServiceServer) ListShards(context.Context, *emptypb.Empty) (*ListShardsReply, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ListShards not implemented")
 }
-func (UnimplementedShardServiceServer) AddDataShard(context.Context, *AddShardRequest) (*AddShardReply, error) {
+func (UnimplementedShardServiceServer) AddDataShard(context.Context, *AddShardRequest) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method AddDataShard not implemented")
 }
-func (UnimplementedShardServiceServer) AddWorldShard(context.Context, *AddWorldShardRequest) (*AddShardReply, error) {
+func (UnimplementedShardServiceServer) AddWorldShard(context.Context, *AddWorldShardRequest) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method AddWorldShard not implemented")
 }
 func (UnimplementedShardServiceServer) GetShard(context.Context, *ShardRequest) (*ShardReply, error) {
@@ -120,7 +121,7 @@ func RegisterShardServiceServer(s grpc.ServiceRegistrar, srv ShardServiceServer)
 }
 
 func _ShardService_ListShards_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(ListShardsRequest)
+	in := new(emptypb.Empty)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
@@ -132,7 +133,7 @@ func _ShardService_ListShards_Handler(srv interface{}, ctx context.Context, dec
 		FullMethod: ShardService_ListShards_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(ShardServiceServer).ListShards(ctx, req.(*ListShardsRequest))
+		return srv.(ShardServiceServer).ListShards(ctx, req.(*emptypb.Empty))
 	}
 	return interceptor(ctx, in, info, handler)
 }
diff --git a/pkg/protos/sharding_rules.pb.go b/pkg/protos/sharding_rules.pb.go
index 1171ab5b4..2131d5ca2 100644
--- a/pkg/protos/sharding_rules.pb.go
+++ b/pkg/protos/sharding_rules.pb.go
@@ -9,6 +9,7 @@ package proto
 import (
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 	reflect "reflect"
 	sync "sync"
 )
@@ -205,44 +206,6 @@ func (x *AddShardingRuleRequest) GetRules() []*ShardingRule {
 	return nil
 }
 
-type AddShardingRuleReply struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *AddShardingRuleReply) Reset() {
-	*x = AddShardingRuleReply{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_sharding_rules_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *AddShardingRuleReply) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*AddShardingRuleReply) ProtoMessage() {}
-
-func (x *AddShardingRuleReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_sharding_rules_proto_msgTypes[3]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use AddShardingRuleReply.ProtoReflect.Descriptor instead.
-func (*AddShardingRuleReply) Descriptor() ([]byte, []int) {
-	return file_protos_sharding_rules_proto_rawDescGZIP(), []int{3}
-}
-
 type ListShardingRuleRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -254,7 +217,7 @@ type ListShardingRuleRequest struct {
 func (x *ListShardingRuleRequest) Reset() {
 	*x = ListShardingRuleRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_sharding_rules_proto_msgTypes[4]
+		mi := &file_protos_sharding_rules_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -267,7 +230,7 @@ func (x *ListShardingRuleRequest) String() string {
 func (*ListShardingRuleRequest) ProtoMessage() {}
 
 func (x *ListShardingRuleRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_sharding_rules_proto_msgTypes[4]
+	mi := &file_protos_sharding_rules_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -280,7 +243,7 @@ func (x *ListShardingRuleRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListShardingRuleRequest.ProtoReflect.Descriptor instead.
 func (*ListShardingRuleRequest) Descriptor() ([]byte, []int) {
-	return file_protos_sharding_rules_proto_rawDescGZIP(), []int{4}
+	return file_protos_sharding_rules_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *ListShardingRuleRequest) GetDistribution() string {
@@ -301,7 +264,7 @@ type ListShardingRuleReply struct {
 func (x *ListShardingRuleReply) Reset() {
 	*x = ListShardingRuleReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_sharding_rules_proto_msgTypes[5]
+		mi := &file_protos_sharding_rules_proto_msgTypes[4]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -314,7 +277,7 @@ func (x *ListShardingRuleReply) String() string {
 func (*ListShardingRuleReply) ProtoMessage() {}
 
 func (x *ListShardingRuleReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_sharding_rules_proto_msgTypes[5]
+	mi := &file_protos_sharding_rules_proto_msgTypes[4]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -327,7 +290,7 @@ func (x *ListShardingRuleReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListShardingRuleReply.ProtoReflect.Descriptor instead.
 func (*ListShardingRuleReply) Descriptor() ([]byte, []int) {
-	return file_protos_sharding_rules_proto_rawDescGZIP(), []int{5}
+	return file_protos_sharding_rules_proto_rawDescGZIP(), []int{4}
 }
 
 func (x *ListShardingRuleReply) GetRules() []*ShardingRule {
@@ -348,7 +311,7 @@ type DropShardingRuleRequest struct {
 func (x *DropShardingRuleRequest) Reset() {
 	*x = DropShardingRuleRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_sharding_rules_proto_msgTypes[6]
+		mi := &file_protos_sharding_rules_proto_msgTypes[5]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -361,7 +324,7 @@ func (x *DropShardingRuleRequest) String() string {
 func (*DropShardingRuleRequest) ProtoMessage() {}
 
 func (x *DropShardingRuleRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_sharding_rules_proto_msgTypes[6]
+	mi := &file_protos_sharding_rules_proto_msgTypes[5]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -374,7 +337,7 @@ func (x *DropShardingRuleRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DropShardingRuleRequest.ProtoReflect.Descriptor instead.
 func (*DropShardingRuleRequest) Descriptor() ([]byte, []int) {
-	return file_protos_sharding_rules_proto_rawDescGZIP(), []int{6}
+	return file_protos_sharding_rules_proto_rawDescGZIP(), []int{5}
 }
 
 func (x *DropShardingRuleRequest) GetId() []string {
@@ -384,104 +347,64 @@ func (x *DropShardingRuleRequest) GetId() []string {
 	return nil
 }
 
-type DropShardingRuleReply struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *DropShardingRuleReply) Reset() {
-	*x = DropShardingRuleReply{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_sharding_rules_proto_msgTypes[7]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *DropShardingRuleReply) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*DropShardingRuleReply) ProtoMessage() {}
-
-func (x *DropShardingRuleReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_sharding_rules_proto_msgTypes[7]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use DropShardingRuleReply.ProtoReflect.Descriptor instead.
-func (*DropShardingRuleReply) Descriptor() ([]byte, []int) {
-	return file_protos_sharding_rules_proto_rawDescGZIP(), []int{7}
-}
-
 var File_protos_sharding_rules_proto protoreflect.FileDescriptor
 
 var file_protos_sharding_rules_proto_rawDesc = []byte{
 	0x0a, 0x1b, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x73, 0x2f, 0x73, 0x68, 0x61, 0x72, 0x64, 0x69, 0x6e,
 	0x67, 0x5f, 0x72, 0x75, 0x6c, 0x65, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x04, 0x73,
-	0x70, 0x71, 0x72, 0x22, 0x57, 0x0a, 0x11, 0x53, 0x68, 0x61, 0x72, 0x64, 0x69, 0x6e, 0x67, 0x52,
-	0x75, 0x6c, 0x65, 0x45, 0x6e, 0x74, 0x72, 0x79, 0x12, 0x1a, 0x0a, 0x06, 0x63, 0x6f, 0x6c, 0x75,
-	0x6d, 0x6e, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x42, 0x02, 0x18, 0x01, 0x52, 0x06, 0x63, 0x6f,
-	0x6c, 0x75, 0x6d, 0x6e, 0x12, 0x26, 0x0a, 0x0c, 0x68, 0x61, 0x73, 0x68, 0x46, 0x75, 0x6e, 0x63,
-	0x74, 0x69, 0x6f, 0x6e, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x42, 0x02, 0x18, 0x01, 0x52, 0x0c,
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 }
 
 var (
@@ -496,27 +419,26 @@ func file_protos_sharding_rules_proto_rawDescGZIP() []byte {
 	return file_protos_sharding_rules_proto_rawDescData
 }
 
-var file_protos_sharding_rules_proto_msgTypes = make([]protoimpl.MessageInfo, 8)
+var file_protos_sharding_rules_proto_msgTypes = make([]protoimpl.MessageInfo, 6)
 var file_protos_sharding_rules_proto_goTypes = []interface{}{
 	(*ShardingRuleEntry)(nil),       // 0: spqr.ShardingRuleEntry
 	(*ShardingRule)(nil),            // 1: spqr.ShardingRule
 	(*AddShardingRuleRequest)(nil),  // 2: spqr.AddShardingRuleRequest
-	(*AddShardingRuleReply)(nil),    // 3: spqr.AddShardingRuleReply
-	(*ListShardingRuleRequest)(nil), // 4: spqr.ListShardingRuleRequest
-	(*ListShardingRuleReply)(nil),   // 5: spqr.ListShardingRuleReply
-	(*DropShardingRuleRequest)(nil), // 6: spqr.DropShardingRuleRequest
-	(*DropShardingRuleReply)(nil),   // 7: spqr.DropShardingRuleReply
+	(*ListShardingRuleRequest)(nil), // 3: spqr.ListShardingRuleRequest
+	(*ListShardingRuleReply)(nil),   // 4: spqr.ListShardingRuleReply
+	(*DropShardingRuleRequest)(nil), // 5: spqr.DropShardingRuleRequest
+	(*emptypb.Empty)(nil),           // 6: google.protobuf.Empty
 }
 var file_protos_sharding_rules_proto_depIdxs = []int32{
 	0, // 0: spqr.ShardingRule.ShardingRuleEntry:type_name -> spqr.ShardingRuleEntry
 	1, // 1: spqr.AddShardingRuleRequest.rules:type_name -> spqr.ShardingRule
 	1, // 2: spqr.ListShardingRuleReply.rules:type_name -> spqr.ShardingRule
 	2, // 3: spqr.ShardingRulesService.AddShardingRules:input_type -> spqr.AddShardingRuleRequest
-	6, // 4: spqr.ShardingRulesService.DropShardingRules:input_type -> spqr.DropShardingRuleRequest
-	4, // 5: spqr.ShardingRulesService.ListShardingRules:input_type -> spqr.ListShardingRuleRequest
-	3, // 6: spqr.ShardingRulesService.AddShardingRules:output_type -> spqr.AddShardingRuleReply
-	7, // 7: spqr.ShardingRulesService.DropShardingRules:output_type -> spqr.DropShardingRuleReply
-	5, // 8: spqr.ShardingRulesService.ListShardingRules:output_type -> spqr.ListShardingRuleReply
+	5, // 4: spqr.ShardingRulesService.DropShardingRules:input_type -> spqr.DropShardingRuleRequest
+	3, // 5: spqr.ShardingRulesService.ListShardingRules:input_type -> spqr.ListShardingRuleRequest
+	6, // 6: spqr.ShardingRulesService.AddShardingRules:output_type -> google.protobuf.Empty
+	6, // 7: spqr.ShardingRulesService.DropShardingRules:output_type -> google.protobuf.Empty
+	4, // 8: spqr.ShardingRulesService.ListShardingRules:output_type -> spqr.ListShardingRuleReply
 	6, // [6:9] is the sub-list for method output_type
 	3, // [3:6] is the sub-list for method input_type
 	3, // [3:3] is the sub-list for extension type_name
@@ -567,18 +489,6 @@ func file_protos_sharding_rules_proto_init() {
 			}
 		}
 		file_protos_sharding_rules_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*AddShardingRuleReply); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_sharding_rules_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ListShardingRuleRequest); i {
 			case 0:
 				return &v.state
@@ -590,7 +500,7 @@ func file_protos_sharding_rules_proto_init() {
 				return nil
 			}
 		}
-		file_protos_sharding_rules_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_sharding_rules_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ListShardingRuleReply); i {
 			case 0:
 				return &v.state
@@ -602,7 +512,7 @@ func file_protos_sharding_rules_proto_init() {
 				return nil
 			}
 		}
-		file_protos_sharding_rules_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_sharding_rules_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*DropShardingRuleRequest); i {
 			case 0:
 				return &v.state
@@ -614,18 +524,6 @@ func file_protos_sharding_rules_proto_init() {
 				return nil
 			}
 		}
-		file_protos_sharding_rules_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*DropShardingRuleReply); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
@@ -633,7 +531,7 @@ func file_protos_sharding_rules_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_protos_sharding_rules_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   8,
+			NumMessages:   6,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/pkg/protos/sharding_rules_grpc.pb.go b/pkg/protos/sharding_rules_grpc.pb.go
index cf24d0b29..43f00271c 100644
--- a/pkg/protos/sharding_rules_grpc.pb.go
+++ b/pkg/protos/sharding_rules_grpc.pb.go
@@ -11,6 +11,7 @@ import (
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
 	status "google.golang.org/grpc/status"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 )
 
 // This is a compile-time assertion to ensure that this generated file
@@ -29,9 +30,9 @@ const (
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
 type ShardingRulesServiceClient interface {
 	// Deprecated: Do not use.
-	AddShardingRules(ctx context.Context, in *AddShardingRuleRequest, opts ...grpc.CallOption) (*AddShardingRuleReply, error)
+	AddShardingRules(ctx context.Context, in *AddShardingRuleRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	// Deprecated: Do not use.
-	DropShardingRules(ctx context.Context, in *DropShardingRuleRequest, opts ...grpc.CallOption) (*DropShardingRuleReply, error)
+	DropShardingRules(ctx context.Context, in *DropShardingRuleRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	// Deprecated: Do not use.
 	ListShardingRules(ctx context.Context, in *ListShardingRuleRequest, opts ...grpc.CallOption) (*ListShardingRuleReply, error)
 }
@@ -45,8 +46,8 @@ func NewShardingRulesServiceClient(cc grpc.ClientConnInterface) ShardingRulesSer
 }
 
 // Deprecated: Do not use.
-func (c *shardingRulesServiceClient) AddShardingRules(ctx context.Context, in *AddShardingRuleRequest, opts ...grpc.CallOption) (*AddShardingRuleReply, error) {
-	out := new(AddShardingRuleReply)
+func (c *shardingRulesServiceClient) AddShardingRules(ctx context.Context, in *AddShardingRuleRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
 	err := c.cc.Invoke(ctx, ShardingRulesService_AddShardingRules_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
@@ -55,8 +56,8 @@ func (c *shardingRulesServiceClient) AddShardingRules(ctx context.Context, in *A
 }
 
 // Deprecated: Do not use.
-func (c *shardingRulesServiceClient) DropShardingRules(ctx context.Context, in *DropShardingRuleRequest, opts ...grpc.CallOption) (*DropShardingRuleReply, error) {
-	out := new(DropShardingRuleReply)
+func (c *shardingRulesServiceClient) DropShardingRules(ctx context.Context, in *DropShardingRuleRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
 	err := c.cc.Invoke(ctx, ShardingRulesService_DropShardingRules_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
@@ -79,9 +80,9 @@ func (c *shardingRulesServiceClient) ListShardingRules(ctx context.Context, in *
 // for forward compatibility
 type ShardingRulesServiceServer interface {
 	// Deprecated: Do not use.
-	AddShardingRules(context.Context, *AddShardingRuleRequest) (*AddShardingRuleReply, error)
+	AddShardingRules(context.Context, *AddShardingRuleRequest) (*emptypb.Empty, error)
 	// Deprecated: Do not use.
-	DropShardingRules(context.Context, *DropShardingRuleRequest) (*DropShardingRuleReply, error)
+	DropShardingRules(context.Context, *DropShardingRuleRequest) (*emptypb.Empty, error)
 	// Deprecated: Do not use.
 	ListShardingRules(context.Context, *ListShardingRuleRequest) (*ListShardingRuleReply, error)
 	mustEmbedUnimplementedShardingRulesServiceServer()
@@ -91,10 +92,10 @@ type ShardingRulesServiceServer interface {
 type UnimplementedShardingRulesServiceServer struct {
 }
 
-func (UnimplementedShardingRulesServiceServer) AddShardingRules(context.Context, *AddShardingRuleRequest) (*AddShardingRuleReply, error) {
+func (UnimplementedShardingRulesServiceServer) AddShardingRules(context.Context, *AddShardingRuleRequest) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method AddShardingRules not implemented")
 }
-func (UnimplementedShardingRulesServiceServer) DropShardingRules(context.Context, *DropShardingRuleRequest) (*DropShardingRuleReply, error) {
+func (UnimplementedShardingRulesServiceServer) DropShardingRules(context.Context, *DropShardingRuleRequest) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method DropShardingRules not implemented")
 }
 func (UnimplementedShardingRulesServiceServer) ListShardingRules(context.Context, *ListShardingRuleRequest) (*ListShardingRuleReply, error) {
diff --git a/pkg/protos/tasks.pb.go b/pkg/protos/tasks.pb.go
index 2ab93d603..fbe13cc64 100644
--- a/pkg/protos/tasks.pb.go
+++ b/pkg/protos/tasks.pb.go
@@ -9,6 +9,7 @@ package proto
 import (
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 	reflect "reflect"
 	sync "sync"
 )
@@ -268,44 +269,6 @@ func (x *TaskGroup) GetJoinType() JoinType {
 	return JoinType_JoinNone
 }
 
-type GetTaskGroupRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *GetTaskGroupRequest) Reset() {
-	*x = GetTaskGroupRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_tasks_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *GetTaskGroupRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*GetTaskGroupRequest) ProtoMessage() {}
-
-func (x *GetTaskGroupRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_tasks_proto_msgTypes[2]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use GetTaskGroupRequest.ProtoReflect.Descriptor instead.
-func (*GetTaskGroupRequest) Descriptor() ([]byte, []int) {
-	return file_protos_tasks_proto_rawDescGZIP(), []int{2}
-}
-
 type GetTaskGroupReply struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -317,7 +280,7 @@ type GetTaskGroupReply struct {
 func (x *GetTaskGroupReply) Reset() {
 	*x = GetTaskGroupReply{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_tasks_proto_msgTypes[3]
+		mi := &file_protos_tasks_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -330,7 +293,7 @@ func (x *GetTaskGroupReply) String() string {
 func (*GetTaskGroupReply) ProtoMessage() {}
 
 func (x *GetTaskGroupReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_tasks_proto_msgTypes[3]
+	mi := &file_protos_tasks_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -343,7 +306,7 @@ func (x *GetTaskGroupReply) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetTaskGroupReply.ProtoReflect.Descriptor instead.
 func (*GetTaskGroupReply) Descriptor() ([]byte, []int) {
-	return file_protos_tasks_proto_rawDescGZIP(), []int{3}
+	return file_protos_tasks_proto_rawDescGZIP(), []int{2}
 }
 
 func (x *GetTaskGroupReply) GetTaskGroup() *TaskGroup {
@@ -364,7 +327,7 @@ type WriteTaskGroupRequest struct {
 func (x *WriteTaskGroupRequest) Reset() {
 	*x = WriteTaskGroupRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_tasks_proto_msgTypes[4]
+		mi := &file_protos_tasks_proto_msgTypes[3]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -377,7 +340,7 @@ func (x *WriteTaskGroupRequest) String() string {
 func (*WriteTaskGroupRequest) ProtoMessage() {}
 
 func (x *WriteTaskGroupRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_tasks_proto_msgTypes[4]
+	mi := &file_protos_tasks_proto_msgTypes[3]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -390,7 +353,7 @@ func (x *WriteTaskGroupRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use WriteTaskGroupRequest.ProtoReflect.Descriptor instead.
 func (*WriteTaskGroupRequest) Descriptor() ([]byte, []int) {
-	return file_protos_tasks_proto_rawDescGZIP(), []int{4}
+	return file_protos_tasks_proto_rawDescGZIP(), []int{3}
 }
 
 func (x *WriteTaskGroupRequest) GetTaskGroup() *TaskGroup {
@@ -400,184 +363,65 @@ func (x *WriteTaskGroupRequest) GetTaskGroup() *TaskGroup {
 	return nil
 }
 
-type WriteTaskGroupReply struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *WriteTaskGroupReply) Reset() {
-	*x = WriteTaskGroupReply{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_tasks_proto_msgTypes[5]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *WriteTaskGroupReply) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*WriteTaskGroupReply) ProtoMessage() {}
-
-func (x *WriteTaskGroupReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_tasks_proto_msgTypes[5]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use WriteTaskGroupReply.ProtoReflect.Descriptor instead.
-func (*WriteTaskGroupReply) Descriptor() ([]byte, []int) {
-	return file_protos_tasks_proto_rawDescGZIP(), []int{5}
-}
-
-type RemoveTaskGroupRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *RemoveTaskGroupRequest) Reset() {
-	*x = RemoveTaskGroupRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_tasks_proto_msgTypes[6]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *RemoveTaskGroupRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*RemoveTaskGroupRequest) ProtoMessage() {}
-
-func (x *RemoveTaskGroupRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_tasks_proto_msgTypes[6]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use RemoveTaskGroupRequest.ProtoReflect.Descriptor instead.
-func (*RemoveTaskGroupRequest) Descriptor() ([]byte, []int) {
-	return file_protos_tasks_proto_rawDescGZIP(), []int{6}
-}
-
-type RemoveTaskGroupReply struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *RemoveTaskGroupReply) Reset() {
-	*x = RemoveTaskGroupReply{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_protos_tasks_proto_msgTypes[7]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *RemoveTaskGroupReply) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*RemoveTaskGroupReply) ProtoMessage() {}
-
-func (x *RemoveTaskGroupReply) ProtoReflect() protoreflect.Message {
-	mi := &file_protos_tasks_proto_msgTypes[7]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use RemoveTaskGroupReply.ProtoReflect.Descriptor instead.
-func (*RemoveTaskGroupReply) Descriptor() ([]byte, []int) {
-	return file_protos_tasks_proto_rawDescGZIP(), []int{7}
-}
-
 var File_protos_tasks_proto protoreflect.FileDescriptor
 
 var file_protos_tasks_proto_rawDesc = []byte{
 	0x0a, 0x12, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x73, 0x2f, 0x74, 0x61, 0x73, 0x6b, 0x73, 0x2e, 0x70,
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 }
 
 var (
@@ -593,18 +437,15 @@ func file_protos_tasks_proto_rawDescGZIP() []byte {
 }
 
 var file_protos_tasks_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
-var file_protos_tasks_proto_msgTypes = make([]protoimpl.MessageInfo, 8)
+var file_protos_tasks_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
 var file_protos_tasks_proto_goTypes = []interface{}{
-	(TaskStatus)(0),                // 0: spqr.TaskStatus
-	(JoinType)(0),                  // 1: spqr.JoinType
-	(*Task)(nil),                   // 2: spqr.Task
-	(*TaskGroup)(nil),              // 3: spqr.TaskGroup
-	(*GetTaskGroupRequest)(nil),    // 4: spqr.GetTaskGroupRequest
-	(*GetTaskGroupReply)(nil),      // 5: spqr.GetTaskGroupReply
-	(*WriteTaskGroupRequest)(nil),  // 6: spqr.WriteTaskGroupRequest
-	(*WriteTaskGroupReply)(nil),    // 7: spqr.WriteTaskGroupReply
-	(*RemoveTaskGroupRequest)(nil), // 8: spqr.RemoveTaskGroupRequest
-	(*RemoveTaskGroupReply)(nil),   // 9: spqr.RemoveTaskGroupReply
+	(TaskStatus)(0),               // 0: spqr.TaskStatus
+	(JoinType)(0),                 // 1: spqr.JoinType
+	(*Task)(nil),                  // 2: spqr.Task
+	(*TaskGroup)(nil),             // 3: spqr.TaskGroup
+	(*GetTaskGroupReply)(nil),     // 4: spqr.GetTaskGroupReply
+	(*WriteTaskGroupRequest)(nil), // 5: spqr.WriteTaskGroupRequest
+	(*emptypb.Empty)(nil),         // 6: google.protobuf.Empty
 }
 var file_protos_tasks_proto_depIdxs = []int32{
 	0, // 0: spqr.Task.status:type_name -> spqr.TaskStatus
@@ -612,12 +453,12 @@ var file_protos_tasks_proto_depIdxs = []int32{
 	1, // 2: spqr.TaskGroup.joinType:type_name -> spqr.JoinType
 	3, // 3: spqr.GetTaskGroupReply.taskGroup:type_name -> spqr.TaskGroup
 	3, // 4: spqr.WriteTaskGroupRequest.taskGroup:type_name -> spqr.TaskGroup
-	4, // 5: spqr.TasksService.GetTaskGroup:input_type -> spqr.GetTaskGroupRequest
-	6, // 6: spqr.TasksService.WriteTaskGroup:input_type -> spqr.WriteTaskGroupRequest
-	8, // 7: spqr.TasksService.RemoveTaskGroup:input_type -> spqr.RemoveTaskGroupRequest
-	5, // 8: spqr.TasksService.GetTaskGroup:output_type -> spqr.GetTaskGroupReply
-	7, // 9: spqr.TasksService.WriteTaskGroup:output_type -> spqr.WriteTaskGroupReply
-	9, // 10: spqr.TasksService.RemoveTaskGroup:output_type -> spqr.RemoveTaskGroupReply
+	6, // 5: spqr.TasksService.GetTaskGroup:input_type -> google.protobuf.Empty
+	5, // 6: spqr.TasksService.WriteTaskGroup:input_type -> spqr.WriteTaskGroupRequest
+	6, // 7: spqr.TasksService.RemoveTaskGroup:input_type -> google.protobuf.Empty
+	4, // 8: spqr.TasksService.GetTaskGroup:output_type -> spqr.GetTaskGroupReply
+	6, // 9: spqr.TasksService.WriteTaskGroup:output_type -> google.protobuf.Empty
+	6, // 10: spqr.TasksService.RemoveTaskGroup:output_type -> google.protobuf.Empty
 	8, // [8:11] is the sub-list for method output_type
 	5, // [5:8] is the sub-list for method input_type
 	5, // [5:5] is the sub-list for extension type_name
@@ -656,18 +497,6 @@ func file_protos_tasks_proto_init() {
 			}
 		}
 		file_protos_tasks_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetTaskGroupRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_tasks_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*GetTaskGroupReply); i {
 			case 0:
 				return &v.state
@@ -679,7 +508,7 @@ func file_protos_tasks_proto_init() {
 				return nil
 			}
 		}
-		file_protos_tasks_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
+		file_protos_tasks_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*WriteTaskGroupRequest); i {
 			case 0:
 				return &v.state
@@ -691,42 +520,6 @@ func file_protos_tasks_proto_init() {
 				return nil
 			}
 		}
-		file_protos_tasks_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*WriteTaskGroupReply); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_tasks_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RemoveTaskGroupRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_protos_tasks_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RemoveTaskGroupReply); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
@@ -734,7 +527,7 @@ func file_protos_tasks_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_protos_tasks_proto_rawDesc,
 			NumEnums:      2,
-			NumMessages:   8,
+			NumMessages:   4,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/pkg/protos/tasks_grpc.pb.go b/pkg/protos/tasks_grpc.pb.go
index e3f442ba1..5a06e97ee 100644
--- a/pkg/protos/tasks_grpc.pb.go
+++ b/pkg/protos/tasks_grpc.pb.go
@@ -11,6 +11,7 @@ import (
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
 	status "google.golang.org/grpc/status"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
 )
 
 // This is a compile-time assertion to ensure that this generated file
@@ -28,9 +29,9 @@ const (
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
 type TasksServiceClient interface {
-	GetTaskGroup(ctx context.Context, in *GetTaskGroupRequest, opts ...grpc.CallOption) (*GetTaskGroupReply, error)
-	WriteTaskGroup(ctx context.Context, in *WriteTaskGroupRequest, opts ...grpc.CallOption) (*WriteTaskGroupReply, error)
-	RemoveTaskGroup(ctx context.Context, in *RemoveTaskGroupRequest, opts ...grpc.CallOption) (*RemoveTaskGroupReply, error)
+	GetTaskGroup(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*GetTaskGroupReply, error)
+	WriteTaskGroup(ctx context.Context, in *WriteTaskGroupRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
+	RemoveTaskGroup(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*emptypb.Empty, error)
 }
 
 type tasksServiceClient struct {
@@ -41,7 +42,7 @@ func NewTasksServiceClient(cc grpc.ClientConnInterface) TasksServiceClient {
 	return &tasksServiceClient{cc}
 }
 
-func (c *tasksServiceClient) GetTaskGroup(ctx context.Context, in *GetTaskGroupRequest, opts ...grpc.CallOption) (*GetTaskGroupReply, error) {
+func (c *tasksServiceClient) GetTaskGroup(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*GetTaskGroupReply, error) {
 	out := new(GetTaskGroupReply)
 	err := c.cc.Invoke(ctx, TasksService_GetTaskGroup_FullMethodName, in, out, opts...)
 	if err != nil {
@@ -50,8 +51,8 @@ func (c *tasksServiceClient) GetTaskGroup(ctx context.Context, in *GetTaskGroupR
 	return out, nil
 }
 
-func (c *tasksServiceClient) WriteTaskGroup(ctx context.Context, in *WriteTaskGroupRequest, opts ...grpc.CallOption) (*WriteTaskGroupReply, error) {
-	out := new(WriteTaskGroupReply)
+func (c *tasksServiceClient) WriteTaskGroup(ctx context.Context, in *WriteTaskGroupRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
 	err := c.cc.Invoke(ctx, TasksService_WriteTaskGroup_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
@@ -59,8 +60,8 @@ func (c *tasksServiceClient) WriteTaskGroup(ctx context.Context, in *WriteTaskGr
 	return out, nil
 }
 
-func (c *tasksServiceClient) RemoveTaskGroup(ctx context.Context, in *RemoveTaskGroupRequest, opts ...grpc.CallOption) (*RemoveTaskGroupReply, error) {
-	out := new(RemoveTaskGroupReply)
+func (c *tasksServiceClient) RemoveTaskGroup(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
 	err := c.cc.Invoke(ctx, TasksService_RemoveTaskGroup_FullMethodName, in, out, opts...)
 	if err != nil {
 		return nil, err
@@ -72,9 +73,9 @@ func (c *tasksServiceClient) RemoveTaskGroup(ctx context.Context, in *RemoveTask
 // All implementations must embed UnimplementedTasksServiceServer
 // for forward compatibility
 type TasksServiceServer interface {
-	GetTaskGroup(context.Context, *GetTaskGroupRequest) (*GetTaskGroupReply, error)
-	WriteTaskGroup(context.Context, *WriteTaskGroupRequest) (*WriteTaskGroupReply, error)
-	RemoveTaskGroup(context.Context, *RemoveTaskGroupRequest) (*RemoveTaskGroupReply, error)
+	GetTaskGroup(context.Context, *emptypb.Empty) (*GetTaskGroupReply, error)
+	WriteTaskGroup(context.Context, *WriteTaskGroupRequest) (*emptypb.Empty, error)
+	RemoveTaskGroup(context.Context, *emptypb.Empty) (*emptypb.Empty, error)
 	mustEmbedUnimplementedTasksServiceServer()
 }
 
@@ -82,13 +83,13 @@ type TasksServiceServer interface {
 type UnimplementedTasksServiceServer struct {
 }
 
-func (UnimplementedTasksServiceServer) GetTaskGroup(context.Context, *GetTaskGroupRequest) (*GetTaskGroupReply, error) {
+func (UnimplementedTasksServiceServer) GetTaskGroup(context.Context, *emptypb.Empty) (*GetTaskGroupReply, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method GetTaskGroup not implemented")
 }
-func (UnimplementedTasksServiceServer) WriteTaskGroup(context.Context, *WriteTaskGroupRequest) (*WriteTaskGroupReply, error) {
+func (UnimplementedTasksServiceServer) WriteTaskGroup(context.Context, *WriteTaskGroupRequest) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method WriteTaskGroup not implemented")
 }
-func (UnimplementedTasksServiceServer) RemoveTaskGroup(context.Context, *RemoveTaskGroupRequest) (*RemoveTaskGroupReply, error) {
+func (UnimplementedTasksServiceServer) RemoveTaskGroup(context.Context, *emptypb.Empty) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method RemoveTaskGroup not implemented")
 }
 func (UnimplementedTasksServiceServer) mustEmbedUnimplementedTasksServiceServer() {}
@@ -105,7 +106,7 @@ func RegisterTasksServiceServer(s grpc.ServiceRegistrar, srv TasksServiceServer)
 }
 
 func _TasksService_GetTaskGroup_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(GetTaskGroupRequest)
+	in := new(emptypb.Empty)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
@@ -117,7 +118,7 @@ func _TasksService_GetTaskGroup_Handler(srv interface{}, ctx context.Context, de
 		FullMethod: TasksService_GetTaskGroup_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(TasksServiceServer).GetTaskGroup(ctx, req.(*GetTaskGroupRequest))
+		return srv.(TasksServiceServer).GetTaskGroup(ctx, req.(*emptypb.Empty))
 	}
 	return interceptor(ctx, in, info, handler)
 }
@@ -141,7 +142,7 @@ func _TasksService_WriteTaskGroup_Handler(srv interface{}, ctx context.Context,
 }
 
 func _TasksService_RemoveTaskGroup_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(RemoveTaskGroupRequest)
+	in := new(emptypb.Empty)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
@@ -153,7 +154,7 @@ func _TasksService_RemoveTaskGroup_Handler(srv interface{}, ctx context.Context,
 		FullMethod: TasksService_RemoveTaskGroup_FullMethodName,
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(TasksServiceServer).RemoveTaskGroup(ctx, req.(*RemoveTaskGroupRequest))
+		return srv.(TasksServiceServer).RemoveTaskGroup(ctx, req.(*emptypb.Empty))
 	}
 	return interceptor(ctx, in, info, handler)
 }
diff --git a/protos/backend_connections.proto b/protos/backend_connections.proto
index 74c9ea52c..11a674425 100644
--- a/protos/backend_connections.proto
+++ b/protos/backend_connections.proto
@@ -4,12 +4,10 @@ package spqr;
 
 option go_package = "spqr/proto";
 
-service BackendConnectionsService {
-  rpc ListBackendConnections (ListBackendConnectionsRequest) returns (ListBackendConntionsReply) {}
-}
+import "google/protobuf/empty.proto";
 
-message ListBackendConnectionsRequest {
-    
+service BackendConnectionsService {
+  rpc ListBackendConnections (google.protobuf.Empty) returns (ListBackendConntionsReply) {}
 }
 
 message ListBackendConntionsReply {
diff --git a/protos/clients.proto b/protos/clients.proto
index 7cbf87098..47173a6cc 100644
--- a/protos/clients.proto
+++ b/protos/clients.proto
@@ -4,12 +4,10 @@ package spqr;
 
 option go_package = "spqr/proto";
 
-service ClientInfoService {
-  rpc ListClients (ListClientsRequest) returns (ListClientsReply) {}
-}
+import "google/protobuf/empty.proto";
 
-message ListClientsRequest {
-    
+service ClientInfoService {
+  rpc ListClients (google.protobuf.Empty) returns (ListClientsReply) {}
 }
 
 message ListClientsReply {
diff --git a/protos/coordinator.proto b/protos/coordinator.proto
index 8ac37cb7a..d14efda73 100644
--- a/protos/coordinator.proto
+++ b/protos/coordinator.proto
@@ -4,27 +4,18 @@ package spqr;
 
 option go_package = "spqr/proto";
 
+import "google/protobuf/empty.proto";
 
 import "protos/router.proto";
 
 service TopologyService {
-  rpc OpenRouter(OpenRouterRequest) returns (OpenRouterReply) {}
-  rpc GetRouterStatus(GetRouterStatusRequest) returns (GetRouterStatusReply) {}
-  rpc CloseRouter(CloseRouterRequest) returns (CloseRouterReply) {}
-  rpc UpdateCoordinator(UpdateCoordinatorRequest) returns (UpdateCoordinatorResponse) {}
-  rpc GetCoordinator(GetCoordinatorRequest) returns (GetCoordinatorResponse) {}
+  rpc OpenRouter(google.protobuf.Empty) returns (google.protobuf.Empty) {}
+  rpc GetRouterStatus(google.protobuf.Empty) returns (GetRouterStatusReply) {}
+  rpc CloseRouter(google.protobuf.Empty) returns (google.protobuf.Empty) {}
+  rpc UpdateCoordinator(UpdateCoordinatorRequest) returns (google.protobuf.Empty) {}
+  rpc GetCoordinator(google.protobuf.Empty) returns (GetCoordinatorResponse) {}
 }
 
-message OpenRouterRequest {}
-
-message OpenRouterReply {}
-
-message CloseRouterRequest {}
-
-message CloseRouterReply {}
-
-message GetRouterStatusRequest {}
-
 message GetRouterStatusReply {
   RouterStatus status = 1;
 }
@@ -33,10 +24,6 @@ message UpdateCoordinatorRequest {
   string address = 1;
 }
 
-message UpdateCoordinatorResponse {}
-
-message GetCoordinatorRequest {}
-
 message GetCoordinatorResponse {
   string address = 1;
 }
\ No newline at end of file
diff --git a/protos/distribution.proto b/protos/distribution.proto
index 270666bd2..83ea6b62f 100644
--- a/protos/distribution.proto
+++ b/protos/distribution.proto
@@ -4,6 +4,8 @@ package spqr;
 
 option go_package = "spqr/proto";
 
+import "google/protobuf/empty.proto";
+
 message DistributionKeyEntry {
   string column = 1;
   string hashFunction = 2;
@@ -25,10 +27,6 @@ message CreateDistributionRequest{
   repeated Distribution distributions = 1;
 }
 
-message CreateDistributionReply{}
-
-message ListDistributionsRequest{}
-
 message ListDistributionsReply {
   repeated Distribution distributions = 1;
 }
@@ -37,23 +35,17 @@ message DropDistributionRequest {
   repeated string ids = 1;
 }
 
-message DropDistributionReply{}
-
 message AlterDistributionAttachRequest{
   string id = 1;
   repeated string ColumnNames = 2;
   repeated DistributedRelation relations = 3;
 }
 
-message AlterDistributionAttachReply{}
-
 message AlterDistributionDetachRequest{
   string id = 1;
   repeated string relNames = 2;
 }
 
-message AlterDistributionDetachReply{}
-
 message GetDistributionRequest{
   string id = 1;
 }
@@ -71,12 +63,12 @@ message GetRelationDistributionReply {
 }
 
 service DistributionService {
-  rpc CreateDistribution(CreateDistributionRequest) returns (CreateDistributionReply) {}
-  rpc DropDistribution(DropDistributionRequest) returns (DropDistributionReply) {}
-  rpc ListDistributions(ListDistributionsRequest) returns (ListDistributionsReply) {}
+  rpc CreateDistribution(CreateDistributionRequest) returns (google.protobuf.Empty) {}
+  rpc DropDistribution(DropDistributionRequest) returns (google.protobuf.Empty) {}
+  rpc ListDistributions(google.protobuf.Empty) returns (ListDistributionsReply) {}
 
-  rpc AlterDistributionAttach(AlterDistributionAttachRequest) returns (AlterDistributionAttachReply) {}
-  rpc AlterDistributionDetach(AlterDistributionDetachRequest) returns (AlterDistributionDetachReply) {}
+  rpc AlterDistributionAttach(AlterDistributionAttachRequest) returns (google.protobuf.Empty) {}
+  rpc AlterDistributionDetach(AlterDistributionDetachRequest) returns (google.protobuf.Empty) {}
 
   rpc GetDistribution(GetDistributionRequest) returns (GetDistributionReply) {}
 
diff --git a/protos/key_range.proto b/protos/key_range.proto
index 6b2ce666d..7b6a19437 100644
--- a/protos/key_range.proto
+++ b/protos/key_range.proto
@@ -3,15 +3,17 @@ syntax = "proto3";
 package spqr;
 
 option go_package = "spqr/proto";
+
+import "google/protobuf/empty.proto";
   
 service KeyRangeService {
   rpc GetKeyRange (GetKeyRangeRequest) returns (KeyRangeReply) {}
   rpc ListKeyRange (ListKeyRangeRequest) returns (KeyRangeReply) {}
-  rpc ListAllKeyRanges (ListAllKeyRangesRequest) returns (KeyRangeReply) {}
+  rpc ListAllKeyRanges (google.protobuf.Empty) returns (KeyRangeReply) {}
   rpc LockKeyRange (LockKeyRangeRequest) returns (ModifyReply) {}
   rpc CreateKeyRange(CreateKeyRangeRequest) returns (ModifyReply) {}
   rpc DropKeyRange(DropKeyRangeRequest) returns (ModifyReply) {}
-  rpc DropAllKeyRanges(DropAllKeyRangesRequest) returns (DropAllKeyRangesResponse) {}
+  rpc DropAllKeyRanges(google.protobuf.Empty) returns (DropAllKeyRangesResponse) {}
   rpc UnlockKeyRange (UnlockKeyRangeRequest) returns (ModifyReply) {}
   rpc SplitKeyRange (SplitKeyRangeRequest) returns (ModifyReply) {}
   rpc MergeKeyRange (MergeKeyRangeRequest) returns (ModifyReply) {}
@@ -41,8 +43,6 @@ message ListKeyRangeRequest {
   string distribution = 1;
 }
 
-message ListAllKeyRangesRequest { }
-
 message CreateKeyRangeRequest {
   KeyRangeInfo key_range_info = 1;
 }
@@ -68,9 +68,6 @@ message DropKeyRangeRequest {
   repeated string id = 1;
 }
 
-message DropAllKeyRangesRequest {
-}
-
 message DropAllKeyRangesResponse {
   repeated KeyRangeInfo key_range = 1;
 }
diff --git a/protos/pools.proto b/protos/pools.proto
index fa9abb14f..dc269c3bd 100644
--- a/protos/pools.proto
+++ b/protos/pools.proto
@@ -3,11 +3,10 @@ package spqr;
 
 option go_package = "spqr/proto";
 
-service PoolService {
-  rpc ListPools(ListPoolsRequest) returns (ListPoolsResponse) {}
-}
+import "google/protobuf/empty.proto";
 
-message ListPoolsRequest {
+service PoolService {
+  rpc ListPools(google.protobuf.Empty) returns (ListPoolsResponse) {}
 }
 
 message ListPoolsResponse {
diff --git a/protos/router.proto b/protos/router.proto
index 752252f52..2e1217af0 100644
--- a/protos/router.proto
+++ b/protos/router.proto
@@ -4,12 +4,13 @@ package spqr;
 
 option go_package = "spqr/proto";
 
+import "google/protobuf/empty.proto";
+
 enum RouterStatus {
   CLOSED = 0;
   OPENED = 1;
 }
 
-
 message Router {
   string id = 1;
   string address = 2;
@@ -17,15 +18,12 @@ message Router {
 }
 
 service RouterService {
-  rpc ListRouters (ListRoutersRequest) returns (ListRoutersReply) {}
+  rpc ListRouters (google.protobuf.Empty) returns (ListRoutersReply) {}
   rpc AddRouter (AddRouterRequest) returns (AddRouterReply) {}
-  rpc RemoveRouter (RemoveRouterRequest) returns (RemoveRouterReply) {}
-  rpc SyncMetadata (SyncMetadataRequest) returns (SyncMetadataReply) {}
+  rpc RemoveRouter (RemoveRouterRequest) returns (google.protobuf.Empty) {}
+  rpc SyncMetadata (SyncMetadataRequest) returns (google.protobuf.Empty) {}
 }
 
-
-message ListRoutersRequest {}
-
 message ListRoutersReply {
 	repeated Router routers = 1;
 }
@@ -42,10 +40,6 @@ message RemoveRouterRequest {
   string id = 1;
 }
 
-message RemoveRouterReply {}
-
 message SyncMetadataRequest {
   Router router = 1;
-}
-
-message SyncMetadataReply {}
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/protos/shard.proto b/protos/shard.proto
index 8cda6b9ef..1efed3220 100644
--- a/protos/shard.proto
+++ b/protos/shard.proto
@@ -4,6 +4,8 @@ package spqr;
 
 option go_package = "spqr/proto";
 
+import "google/protobuf/empty.proto";
+
 message Shard {
   string id = 1;
   repeated string hosts = 2;
@@ -15,9 +17,9 @@ message ShardInfo {
 }
 
 service ShardService {
-  rpc ListShards (ListShardsRequest) returns (ListShardsReply) {}
-  rpc AddDataShard (AddShardRequest) returns (AddShardReply) {}
-  rpc AddWorldShard (AddWorldShardRequest) returns (AddShardReply) {}
+  rpc ListShards (google.protobuf.Empty) returns (ListShardsReply) {}
+  rpc AddDataShard (AddShardRequest) returns (google.protobuf.Empty) {}
+  rpc AddWorldShard (AddWorldShardRequest) returns (google.protobuf.Empty) {}
   rpc GetShard (ShardRequest) returns (ShardReply) {}
 }
 
@@ -25,9 +27,6 @@ message ShardReply {
   Shard shard = 1;
 }
 
-message ListShardsRequest {
-}
-
 message ShardRequest {
   string id = 1;
 }
@@ -40,9 +39,6 @@ message AddShardRequest {
   Shard shard = 1;
 }
 
-message AddShardReply {
-}
-
 message AddWorldShardRequest {
   Shard shard = 1;
 }
\ No newline at end of file
diff --git a/protos/sharding_rules.proto b/protos/sharding_rules.proto
index 3f1025c6c..536a7c248 100644
--- a/protos/sharding_rules.proto
+++ b/protos/sharding_rules.proto
@@ -4,12 +4,13 @@ package spqr;
 
 option go_package = "spqr/proto";
 
+import "google/protobuf/empty.proto";
+
 message ShardingRuleEntry {
   string column = 2 [deprecated = true];
   string hashFunction = 3 [deprecated = true];
 }
 
-
 message ShardingRule {
   string id = 1 [deprecated = true]; 
   string tableName = 2 [deprecated = true];
@@ -21,8 +22,6 @@ message AddShardingRuleRequest {
   repeated ShardingRule rules = 1;
 }
 
-message AddShardingRuleReply {}
-
 message ListShardingRuleRequest {
   string distribution = 1;
 }
@@ -35,13 +34,11 @@ message DropShardingRuleRequest {
   repeated string id = 1;
 }
 
-message DropShardingRuleReply {}
-
 service ShardingRulesService {
-  rpc AddShardingRules(AddShardingRuleRequest) returns (AddShardingRuleReply) {
+  rpc AddShardingRules(AddShardingRuleRequest) returns (google.protobuf.Empty) {
       option deprecated = true;
   }
-  rpc DropShardingRules(DropShardingRuleRequest) returns (DropShardingRuleReply) {
+  rpc DropShardingRules(DropShardingRuleRequest) returns (google.protobuf.Empty) {
     option deprecated = true;
   }
   rpc ListShardingRules(ListShardingRuleRequest) returns (ListShardingRuleReply) {
diff --git a/protos/tasks.proto b/protos/tasks.proto
index 9dde7be4a..84f8968e5 100644
--- a/protos/tasks.proto
+++ b/protos/tasks.proto
@@ -4,6 +4,8 @@ package spqr;
 
 option go_package = "spqr/proto";
 
+import "google/protobuf/empty.proto";
+
 enum TaskStatus {
   Planned = 0;
   Split = 1;
@@ -31,7 +33,6 @@ message TaskGroup {
   JoinType joinType = 2;
 }
 
-message GetTaskGroupRequest{}
 message GetTaskGroupReply {
   TaskGroup taskGroup = 1;
 }
@@ -39,13 +40,9 @@ message GetTaskGroupReply {
 message WriteTaskGroupRequest{
   TaskGroup taskGroup = 1;
 }
-message WriteTaskGroupReply {}
-
-message RemoveTaskGroupRequest{}
-message RemoveTaskGroupReply{}
 
 service TasksService {
-  rpc GetTaskGroup(GetTaskGroupRequest) returns (GetTaskGroupReply) {}
-  rpc WriteTaskGroup(WriteTaskGroupRequest) returns(WriteTaskGroupReply) {}
-  rpc RemoveTaskGroup(RemoveTaskGroupRequest) returns(RemoveTaskGroupReply) {}
+  rpc GetTaskGroup(google.protobuf.Empty) returns (GetTaskGroupReply) {}
+  rpc WriteTaskGroup(WriteTaskGroupRequest) returns(google.protobuf.Empty) {}
+  rpc RemoveTaskGroup(google.protobuf.Empty) returns(google.protobuf.Empty) {}
 }
diff --git a/router/grpc/qrouter.go b/router/grpc/qrouter.go
index f5f2194ca..a88edb413 100644
--- a/router/grpc/qrouter.go
+++ b/router/grpc/qrouter.go
@@ -18,6 +18,7 @@ import (
 	"github.com/pg-sharding/spqr/router/qrouter"
 	"github.com/pg-sharding/spqr/router/rulerouter"
 	"google.golang.org/grpc/reflection"
+	"google.golang.org/protobuf/types/known/emptypb"
 )
 
 type LocalQrouterServer struct {
@@ -36,7 +37,7 @@ type LocalQrouterServer struct {
 	rr  rulerouter.RuleRouter
 }
 
-func (l *LocalQrouterServer) ListShards(ctx context.Context, _ *protos.ListShardsRequest) (*protos.ListShardsReply, error) {
+func (l *LocalQrouterServer) ListShards(ctx context.Context, _ *emptypb.Empty) (*protos.ListShardsReply, error) {
 	shards, err := l.mgr.ListShards(ctx)
 	if err != nil {
 		return nil, err
@@ -52,14 +53,14 @@ func (l *LocalQrouterServer) ListShards(ctx context.Context, _ *protos.ListShard
 	}, nil
 }
 
-func (l *LocalQrouterServer) AddDataShard(ctx context.Context, request *protos.AddShardRequest) (*protos.AddShardReply, error) {
+func (l *LocalQrouterServer) AddDataShard(ctx context.Context, request *protos.AddShardRequest) (*emptypb.Empty, error) {
 	if err := l.mgr.AddDataShard(ctx, datashards.DataShardFromProto(request.GetShard())); err != nil {
 		return nil, err
 	}
-	return &protos.AddShardReply{}, nil
+	return nil, nil
 }
 
-func (l *LocalQrouterServer) AddWorldShard(ctx context.Context, request *protos.AddWorldShardRequest) (*protos.AddShardReply, error) {
+func (l *LocalQrouterServer) AddWorldShard(ctx context.Context, request *protos.AddWorldShardRequest) (*emptypb.Empty, error) {
 	//TODO implement me
 	panic("implement me")
 }
@@ -76,29 +77,29 @@ func (l *LocalQrouterServer) GetShard(ctx context.Context, request *protos.Shard
 
 // CreateDistribution creates distribution in QDB
 // TODO: unit tests
-func (l *LocalQrouterServer) CreateDistribution(ctx context.Context, request *protos.CreateDistributionRequest) (*protos.CreateDistributionReply, error) {
+func (l *LocalQrouterServer) CreateDistribution(ctx context.Context, request *protos.CreateDistributionRequest) (*emptypb.Empty, error) {
 	for _, ds := range request.GetDistributions() {
 		if err := l.mgr.CreateDistribution(ctx, distributions.DistributionFromProto(ds)); err != nil {
 			return nil, err
 		}
 	}
-	return &protos.CreateDistributionReply{}, nil
+	return nil, nil
 }
 
 // DropDistribution deletes distribution from QDB
 // TODO: unit tests
-func (l *LocalQrouterServer) DropDistribution(ctx context.Context, request *protos.DropDistributionRequest) (*protos.DropDistributionReply, error) {
+func (l *LocalQrouterServer) DropDistribution(ctx context.Context, request *protos.DropDistributionRequest) (*emptypb.Empty, error) {
 	for _, id := range request.GetIds() {
 		if err := l.mgr.DropDistribution(ctx, id); err != nil {
 			return nil, err
 		}
 	}
-	return &protos.DropDistributionReply{}, nil
+	return nil, nil
 }
 
 // ListDistributions returns all distributions from QDB
 // TODO: unit tests
-func (l *LocalQrouterServer) ListDistributions(ctx context.Context, _ *protos.ListDistributionsRequest) (*protos.ListDistributionsReply, error) {
+func (l *LocalQrouterServer) ListDistributions(ctx context.Context, _ *emptypb.Empty) (*protos.ListDistributionsReply, error) {
 	distrs, err := l.mgr.ListDistributions(ctx)
 	if err != nil {
 		return nil, err
@@ -116,8 +117,8 @@ func (l *LocalQrouterServer) ListDistributions(ctx context.Context, _ *protos.Li
 
 // AlterDistributionAttach attaches relation to distribution
 // TODO: unit tests
-func (l *LocalQrouterServer) AlterDistributionAttach(ctx context.Context, request *protos.AlterDistributionAttachRequest) (*protos.AlterDistributionAttachReply, error) {
-	return &protos.AlterDistributionAttachReply{}, l.mgr.AlterDistributionAttach(
+func (l *LocalQrouterServer) AlterDistributionAttach(ctx context.Context, request *protos.AlterDistributionAttachRequest) (*emptypb.Empty, error) {
+	return nil, l.mgr.AlterDistributionAttach(
 		ctx,
 		request.GetId(),
 		func() []*distributions.DistributedRelation {
@@ -132,13 +133,13 @@ func (l *LocalQrouterServer) AlterDistributionAttach(ctx context.Context, reques
 
 // AlterDistributionDetach detaches relation from distribution
 // TODO: unit tests
-func (l *LocalQrouterServer) AlterDistributionDetach(ctx context.Context, request *protos.AlterDistributionDetachRequest) (*protos.AlterDistributionDetachReply, error) {
+func (l *LocalQrouterServer) AlterDistributionDetach(ctx context.Context, request *protos.AlterDistributionDetachRequest) (*emptypb.Empty, error) {
 	for _, relName := range request.GetRelNames() {
 		if err := l.mgr.AlterDistributionDetach(ctx, request.GetId(), relName); err != nil {
 			return nil, err
 		}
 	}
-	return &protos.AlterDistributionDetachReply{}, nil
+	return nil, nil
 }
 
 // GetDistribution retrieves info about distribution from QDB
@@ -162,13 +163,13 @@ func (l *LocalQrouterServer) GetRelationDistribution(ctx context.Context, reques
 }
 
 // TODO : unit tests
-func (l *LocalQrouterServer) OpenRouter(ctx context.Context, request *protos.OpenRouterRequest) (*protos.OpenRouterReply, error) {
+func (l *LocalQrouterServer) OpenRouter(ctx context.Context, _ *emptypb.Empty) (*emptypb.Empty, error) {
 	l.qr.Initialize()
-	return &protos.OpenRouterReply{}, nil
+	return nil, nil
 }
 
 // TODO : unit tests
-func (l *LocalQrouterServer) GetRouterStatus(ctx context.Context, request *protos.GetRouterStatusRequest) (*protos.GetRouterStatusReply, error) {
+func (l *LocalQrouterServer) GetRouterStatus(ctx context.Context, _ *emptypb.Empty) (*protos.GetRouterStatusReply, error) {
 	if l.qr.Initialized() {
 		return &protos.GetRouterStatusReply{
 			Status: protos.RouterStatus_OPENED,
@@ -180,7 +181,7 @@ func (l *LocalQrouterServer) GetRouterStatus(ctx context.Context, request *proto
 }
 
 // TODO : implement, unit tests
-func (l *LocalQrouterServer) CloseRouter(ctx context.Context, request *protos.CloseRouterRequest) (*protos.CloseRouterReply, error) {
+func (l *LocalQrouterServer) CloseRouter(ctx context.Context, _ *emptypb.Empty) (*emptypb.Empty, error) {
 	//TODO implement me
 	panic("implement me")
 }
@@ -197,7 +198,7 @@ func (l *LocalQrouterServer) DropKeyRange(ctx context.Context, request *protos.D
 }
 
 // TODO : unit tests
-func (l *LocalQrouterServer) DropAllKeyRanges(ctx context.Context, _ *protos.DropAllKeyRangesRequest) (*protos.DropAllKeyRangesResponse, error) {
+func (l *LocalQrouterServer) DropAllKeyRanges(ctx context.Context, _ *emptypb.Empty) (*protos.DropAllKeyRangesResponse, error) {
 	if err := l.mgr.DropKeyRangeAll(ctx); err != nil {
 		return nil, err
 	}
@@ -215,7 +216,7 @@ func (l *LocalQrouterServer) MoveKeyRange(ctx context.Context, request *protos.M
 }
 
 // TODO : unit tests
-func (l *LocalQrouterServer) AddShardingRules(ctx context.Context, request *protos.AddShardingRuleRequest) (*protos.AddShardingRuleReply, error) {
+func (l *LocalQrouterServer) AddShardingRules(ctx context.Context, request *protos.AddShardingRuleRequest) (*emptypb.Empty, error) {
 	return nil, spqrerror.ShardingRulesRemoved
 }
 
@@ -225,7 +226,7 @@ func (l *LocalQrouterServer) ListShardingRules(ctx context.Context, request *pro
 }
 
 // TODO : unit tests
-func (l *LocalQrouterServer) DropShardingRules(ctx context.Context, request *protos.DropShardingRuleRequest) (*protos.DropShardingRuleReply, error) {
+func (l *LocalQrouterServer) DropShardingRules(ctx context.Context, request *protos.DropShardingRuleRequest) (*emptypb.Empty, error) {
 	return nil, spqrerror.ShardingRulesRemoved
 }
 
@@ -278,7 +279,7 @@ func (l *LocalQrouterServer) ListKeyRange(ctx context.Context, request *protos.L
 }
 
 // TODO : unit tests
-func (l *LocalQrouterServer) ListAllKeyRanges(ctx context.Context, request *protos.ListAllKeyRangesRequest) (*protos.KeyRangeReply, error) {
+func (l *LocalQrouterServer) ListAllKeyRanges(ctx context.Context, _ *emptypb.Empty) (*protos.KeyRangeReply, error) {
 	krsDb, err := l.mgr.ListAllKeyRanges(ctx)
 	if err != nil {
 		return nil, err
@@ -388,7 +389,7 @@ func PoolToProto(p pool.Pool, router string) *protos.PoolInfo {
 }
 
 // TODO : unit tests
-func (l *LocalQrouterServer) ListClients(context.Context, *protos.ListClientsRequest) (*protos.ListClientsReply, error) {
+func (l *LocalQrouterServer) ListClients(context.Context, *emptypb.Empty) (*protos.ListClientsReply, error) {
 	reply := &protos.ListClientsReply{}
 
 	err := l.rr.ClientPoolForeach(func(client client.ClientInfo) error {
@@ -399,7 +400,7 @@ func (l *LocalQrouterServer) ListClients(context.Context, *protos.ListClientsReq
 }
 
 // TODO : unit tests
-func (l *LocalQrouterServer) ListBackendConnections(context.Context, *protos.ListBackendConnectionsRequest) (*protos.ListBackendConntionsReply, error) {
+func (l *LocalQrouterServer) ListBackendConnections(context.Context, *emptypb.Empty) (*protos.ListBackendConntionsReply, error) {
 	reply := &protos.ListBackendConntionsReply{}
 
 	err := l.rr.ForEach(func(sh shard.Shardinfo) error {
@@ -410,7 +411,7 @@ func (l *LocalQrouterServer) ListBackendConnections(context.Context, *protos.Lis
 }
 
 // TODO : unit tests
-func (l *LocalQrouterServer) ListPools(context.Context, *protos.ListPoolsRequest) (*protos.ListPoolsResponse, error) {
+func (l *LocalQrouterServer) ListPools(context.Context, *emptypb.Empty) (*protos.ListPoolsResponse, error) {
 	reply := &protos.ListPoolsResponse{}
 
 	err := l.rr.ForEachPool(func(p pool.Pool) error {
@@ -421,20 +422,18 @@ func (l *LocalQrouterServer) ListPools(context.Context, *protos.ListPoolsRequest
 }
 
 // TODO : unit tests
-func (l *LocalQrouterServer) UpdateCoordinator(ctx context.Context, req *protos.UpdateCoordinatorRequest) (*protos.UpdateCoordinatorResponse, error) {
-	reply := &protos.UpdateCoordinatorResponse{}
-	err := l.mgr.UpdateCoordinator(ctx, req.Address)
-	return reply, err
+func (l *LocalQrouterServer) UpdateCoordinator(ctx context.Context, req *protos.UpdateCoordinatorRequest) (*emptypb.Empty, error) {
+	return nil, l.mgr.UpdateCoordinator(ctx, req.Address)
 }
 
-func (l *LocalQrouterServer) GetCoordinator(ctx context.Context, req *protos.GetCoordinatorRequest) (*protos.GetCoordinatorResponse, error) {
+func (l *LocalQrouterServer) GetCoordinator(ctx context.Context, _ *emptypb.Empty) (*protos.GetCoordinatorResponse, error) {
 	reply := &protos.GetCoordinatorResponse{}
 	re, err := l.mgr.GetCoordinator(ctx)
 	reply.Address = re
 	return reply, err
 }
 
-func (l *LocalQrouterServer) GetTaskGroup(ctx context.Context, _ *protos.GetTaskGroupRequest) (*protos.GetTaskGroupReply, error) {
+func (l *LocalQrouterServer) GetTaskGroup(ctx context.Context, _ *emptypb.Empty) (*protos.GetTaskGroupReply, error) {
 	group, err := l.mgr.GetTaskGroup(ctx)
 	if err != nil {
 		return nil, err
@@ -444,12 +443,12 @@ func (l *LocalQrouterServer) GetTaskGroup(ctx context.Context, _ *protos.GetTask
 	}, nil
 }
 
-func (l *LocalQrouterServer) WriteTaskGroup(ctx context.Context, request *protos.WriteTaskGroupRequest) (*protos.WriteTaskGroupReply, error) {
-	return &protos.WriteTaskGroupReply{}, l.mgr.WriteTaskGroup(ctx, tasks.TaskGroupFromProto(request.TaskGroup))
+func (l *LocalQrouterServer) WriteTaskGroup(ctx context.Context, request *protos.WriteTaskGroupRequest) (*emptypb.Empty, error) {
+	return nil, l.mgr.WriteTaskGroup(ctx, tasks.TaskGroupFromProto(request.TaskGroup))
 }
 
-func (l *LocalQrouterServer) RemoveTaskGroup(ctx context.Context, _ *protos.RemoveTaskGroupRequest) (*protos.RemoveTaskGroupReply, error) {
-	return &protos.RemoveTaskGroupReply{}, l.mgr.RemoveTaskGroup(ctx)
+func (l *LocalQrouterServer) RemoveTaskGroup(ctx context.Context, _ *emptypb.Empty) (*emptypb.Empty, error) {
+	return nil, l.mgr.RemoveTaskGroup(ctx)
 }
 
 func Register(server reflection.GRPCServer, qrouter qrouter.QueryRouter, mgr meta.EntityMgr, rr rulerouter.RuleRouter) {
diff --git a/yacc/console/lex.go b/yacc/console/lex.go
index d50f272af..778150994 100644
--- a/yacc/console/lex.go
+++ b/yacc/console/lex.go
@@ -10,7 +10,7 @@ import (
 
 
 
-//line lex.go:14
+//line lex.go:12
 const lexer_start int = 4
 const lexer_first_final int = 4
 const lexer_error int = 0
@@ -36,7 +36,7 @@ func NewLexer(data []byte) *Lexer {
         pe: len(data),
     }
     
-//line lex.go:40
+//line lex.go:36
 	{
 	 lex.cs = lexer_start
 	 lex.ts = 0
@@ -52,7 +52,7 @@ func ResetLexer(lex *Lexer, data []byte) {
     lex.pe = len(data)
     lex.data = data
     
-//line lex.go:56
+//line lex.go:50
 	{
 	 lex.cs = lexer_start
 	 lex.ts = 0
@@ -73,7 +73,7 @@ func (lex *Lexer) Lex(lval *yySymType) int {
     var tok int
 
     
-//line lex.go:77
+//line lex.go:69
 	{
 	if ( lex.p) == ( lex.pe) {
 		goto _test_eof
@@ -212,7 +212,7 @@ tr24:
 //line NONE:1
  lex.ts = ( lex.p)
 
-//line lex.go:216
+//line lex.go:208
 		switch  lex.data[( lex.p)] {
 		case 32:
 			goto st5
@@ -307,7 +307,7 @@ tr17:
 			goto _test_eof6
 		}
 	st_case_6:
-//line lex.go:311
+//line lex.go:303
 		switch  lex.data[( lex.p)] {
 		case 33:
 			goto tr8
@@ -356,7 +356,7 @@ tr19:
 			goto _test_eof7
 		}
 	st_case_7:
-//line lex.go:360
+//line lex.go:352
 		switch  lex.data[( lex.p)] {
 		case 34:
 			goto tr19
@@ -511,7 +511,7 @@ tr15:
 			goto _test_eof12
 		}
 	st_case_12:
-//line lex.go:515
+//line lex.go:507
 		switch  lex.data[( lex.p)] {
 		case 34:
 			goto st8
@@ -572,7 +572,7 @@ tr5:
 			goto _test_eof13
 		}
 	st_case_13:
-//line lex.go:576
+//line lex.go:568
 		if  lex.data[( lex.p)] == 42 {
 			goto st3
 		}

From 93d2de59af719b87abb40fd087267688c53fdf96 Mon Sep 17 00:00:00 2001
From: Yury Frolov <yura200253@gmail.com>
Date: Tue, 29 Oct 2024 18:16:37 +0500
Subject: [PATCH 2/2] Fix feature tests

---
 test/feature/spqr_test.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/feature/spqr_test.go b/test/feature/spqr_test.go
index 8b6381cd2..36f6f29d9 100644
--- a/test/feature/spqr_test.go
+++ b/test/feature/spqr_test.go
@@ -588,7 +588,7 @@ func (tctx *testContext) stepHostIsStopped(service string) error {
 		client := protos.NewRouterServiceClient(conn)
 		ctx, cancel := context.WithTimeout(context.Background(), time.Second)
 		defer cancel()
-		_, err = client.ListRouters(ctx, &protos.ListRoutersRequest{})
+		_, err = client.ListRouters(ctx, nil)
 		return err == nil
 	}, time.Minute, time.Second)