diff --git a/go/greptime/v1/column.pb.go b/go/greptime/v1/column.pb.go
index e70122f..7234e03 100644
--- a/go/greptime/v1/column.pb.go
+++ b/go/greptime/v1/column.pb.go
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.28.1
@@ -175,7 +189,8 @@ type Column struct {
 	SemanticType Column_SemanticType `protobuf:"varint,2,opt,name=semantic_type,json=semanticType,proto3,enum=greptime.v1.Column_SemanticType" json:"semantic_type,omitempty"`
 	// The array of non-null values in this column.
 	//
-	// For example: suppose there is a column "foo" that contains some int32 values (1, 2, 3, 4, 5, null, 7, 8, 9, null);
+	// For example: suppose there is a column "foo" that contains some int32
+	// values (1, 2, 3, 4, 5, null, 7, 8, 9, null);
 	//
 	//	column:
 	//	  column_name: foo
@@ -184,7 +199,8 @@ type Column struct {
 	//	  null_masks: 00100000 00000010
 	Values *Column_Values `protobuf:"bytes,3,opt,name=values,proto3" json:"values,omitempty"`
 	// Mask maps the positions of null values.
-	// If a bit in null_mask is 1, it indicates that the column value at that position is null.
+	// If a bit in null_mask is 1, it indicates that the column value at that
+	// position is null.
 	NullMask []byte `protobuf:"bytes,4,opt,name=null_mask,json=nullMask,proto3" json:"null_mask,omitempty"`
 	// Helpful in creating vector from column.
 	Datatype ColumnDataType `protobuf:"varint,5,opt,name=datatype,proto3,enum=greptime.v1.ColumnDataType" json:"datatype,omitempty"`
diff --git a/go/greptime/v1/common.pb.go b/go/greptime/v1/common.pb.go
index f36601b..b4b3ef3 100644
--- a/go/greptime/v1/common.pb.go
+++ b/go/greptime/v1/common.pb.go
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.28.1
diff --git a/go/greptime/v1/database.pb.go b/go/greptime/v1/database.pb.go
index 515b68a..a41371c 100644
--- a/go/greptime/v1/database.pb.go
+++ b/go/greptime/v1/database.pb.go
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.28.1
@@ -388,7 +402,8 @@ type DeleteRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	// The table name to delete from. Catalog name and schema name are in the `RequestHeader`.
+	// The table name to delete from. Catalog name and schema name are in the
+	// `RequestHeader`.
 	TableName string `protobuf:"bytes,1,opt,name=table_name,json=tableName,proto3" json:"table_name,omitempty"`
 	// The region number of current delete request.
 	RegionNumber uint32 `protobuf:"varint,2,opt,name=region_number,json=regionNumber,proto3" json:"region_number,omitempty"`
diff --git a/go/greptime/v1/ddl.pb.go b/go/greptime/v1/ddl.pb.go
index 7328e43..2378bf4 100644
--- a/go/greptime/v1/ddl.pb.go
+++ b/go/greptime/v1/ddl.pb.go
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.28.1
@@ -20,8 +34,9 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
-// "Data Definition Language" requests, that create, modify or delete the database structures but not the data.
-// `DdlRequest` could carry more information than plain SQL, for example, the "table_id" in `CreateTableExpr`.
+// "Data Definition Language" requests, that create, modify or delete the
+// database structures but not the data. `DdlRequest` could carry more
+// information than plain SQL, for example, the "table_id" in `CreateTableExpr`.
 // So create a new DDL expr if you need it.
 type DdlRequest struct {
 	state         protoimpl.MessageState
diff --git a/go/greptime/v1/health.pb.go b/go/greptime/v1/health.pb.go
index fa3c9c7..b44495d 100644
--- a/go/greptime/v1/health.pb.go
+++ b/go/greptime/v1/health.pb.go
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.28.1
diff --git a/go/greptime/v1/meta/cluster.pb.go b/go/greptime/v1/meta/cluster.pb.go
index 1825414..3796016 100644
--- a/go/greptime/v1/meta/cluster.pb.go
+++ b/go/greptime/v1/meta/cluster.pb.go
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.28.1
diff --git a/go/greptime/v1/meta/common.pb.go b/go/greptime/v1/meta/common.pb.go
index 778faa2..db55432 100644
--- a/go/greptime/v1/meta/common.pb.go
+++ b/go/greptime/v1/meta/common.pb.go
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.28.1
diff --git a/go/greptime/v1/meta/heartbeat.pb.go b/go/greptime/v1/meta/heartbeat.pb.go
index b3e4b16..2fc9c5b 100644
--- a/go/greptime/v1/meta/heartbeat.pb.go
+++ b/go/greptime/v1/meta/heartbeat.pb.go
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.28.1
@@ -574,7 +588,8 @@ type MailboxMessage struct {
 
 	// The id is used to associate request and response.
 	Id uint64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
-	// The following information plays a bigger role in making messages traceable and facilitating debugging.
+	// The following information plays a bigger role in making messages traceable
+	// and facilitating debugging.
 	Subject string `protobuf:"bytes,2,opt,name=subject,proto3" json:"subject,omitempty"`
 	From    string `protobuf:"bytes,3,opt,name=from,proto3" json:"from,omitempty"`
 	To      string `protobuf:"bytes,4,opt,name=to,proto3" json:"to,omitempty"`
diff --git a/go/greptime/v1/meta/heartbeat_grpc.pb.go b/go/greptime/v1/meta/heartbeat_grpc.pb.go
index 814728d..0c03052 100644
--- a/go/greptime/v1/meta/heartbeat_grpc.pb.go
+++ b/go/greptime/v1/meta/heartbeat_grpc.pb.go
@@ -23,7 +23,8 @@ const _ = grpc.SupportPackageIsVersion7
 // 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 HeartbeatClient interface {
 	// Heartbeat, there may be many contents of the heartbeat, such as:
-	// 1. Metadata to be registered to meta server and discoverable by other nodes.
+	// 1. Metadata to be registered to meta server and discoverable by other
+	// nodes.
 	// 2. Some performance metrics, such as Load, CPU usage, etc.
 	// 3. The number of computing tasks being executed.
 	Heartbeat(ctx context.Context, opts ...grpc.CallOption) (Heartbeat_HeartbeatClient, error)
@@ -84,7 +85,8 @@ func (c *heartbeatClient) AskLeader(ctx context.Context, in *AskLeaderRequest, o
 // for forward compatibility
 type HeartbeatServer interface {
 	// Heartbeat, there may be many contents of the heartbeat, such as:
-	// 1. Metadata to be registered to meta server and discoverable by other nodes.
+	// 1. Metadata to be registered to meta server and discoverable by other
+	// nodes.
 	// 2. Some performance metrics, such as Load, CPU usage, etc.
 	// 3. The number of computing tasks being executed.
 	Heartbeat(Heartbeat_HeartbeatServer) error
diff --git a/go/greptime/v1/meta/lock.pb.go b/go/greptime/v1/meta/lock.pb.go
index 1ae6c13..9f7c77c 100644
--- a/go/greptime/v1/meta/lock.pb.go
+++ b/go/greptime/v1/meta/lock.pb.go
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.28.1
@@ -28,8 +42,8 @@ type LockRequest struct {
 	Header *RequestHeader `protobuf:"bytes,1,opt,name=header,proto3" json:"header,omitempty"`
 	// Name is the identifier for the distributed shared lock to be acquired.
 	Name []byte `protobuf:"bytes,2,opt,name=name,proto3" json:"name,omitempty"`
-	// If the expiration time is exceeded and currently holds the lock, the lock is
-	// automatically released.
+	// If the expiration time is exceeded and currently holds the lock, the lock
+	// is automatically released.
 	ExpireSecs int64 `protobuf:"varint,3,opt,name=expire_secs,json=expireSecs,proto3" json:"expire_secs,omitempty"`
 }
 
diff --git a/go/greptime/v1/meta/lock_grpc.pb.go b/go/greptime/v1/meta/lock_grpc.pb.go
index 775babd..2980e5b 100644
--- a/go/greptime/v1/meta/lock_grpc.pb.go
+++ b/go/greptime/v1/meta/lock_grpc.pb.go
@@ -22,8 +22,9 @@ const _ = grpc.SupportPackageIsVersion7
 //
 // 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 LockClient interface {
-	// Lock acquires a distributed shared lock on a given named lock. On success, it
-	// will return a unique key that exists so long as the lock is held by the caller.
+	// Lock acquires a distributed shared lock on a given named lock. On success,
+	// it will return a unique key that exists so long as the lock is held by the
+	// caller.
 	Lock(ctx context.Context, in *LockRequest, opts ...grpc.CallOption) (*LockResponse, error)
 	// Unlock takes a key returned by Lock and releases the hold on lock.
 	Unlock(ctx context.Context, in *UnlockRequest, opts ...grpc.CallOption) (*UnlockResponse, error)
@@ -59,8 +60,9 @@ func (c *lockClient) Unlock(ctx context.Context, in *UnlockRequest, opts ...grpc
 // All implementations must embed UnimplementedLockServer
 // for forward compatibility
 type LockServer interface {
-	// Lock acquires a distributed shared lock on a given named lock. On success, it
-	// will return a unique key that exists so long as the lock is held by the caller.
+	// Lock acquires a distributed shared lock on a given named lock. On success,
+	// it will return a unique key that exists so long as the lock is held by the
+	// caller.
 	Lock(context.Context, *LockRequest) (*LockResponse, error)
 	// Unlock takes a key returned by Lock and releases the hold on lock.
 	Unlock(context.Context, *UnlockRequest) (*UnlockResponse, error)
diff --git a/go/greptime/v1/meta/route.pb.go b/go/greptime/v1/meta/route.pb.go
index 0a57217..b11a9e6 100644
--- a/go/greptime/v1/meta/route.pb.go
+++ b/go/greptime/v1/meta/route.pb.go
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.28.1
diff --git a/go/greptime/v1/meta/store.pb.go b/go/greptime/v1/meta/store.pb.go
index 0c18056..be9485e 100644
--- a/go/greptime/v1/meta/store.pb.go
+++ b/go/greptime/v1/meta/store.pb.go
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.28.1
diff --git a/go/greptime/v1/prom.pb.go b/go/greptime/v1/prom.pb.go
index bd2d598..f4b1ea1 100644
--- a/go/greptime/v1/prom.pb.go
+++ b/go/greptime/v1/prom.pb.go
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.28.1
diff --git a/proto/greptime/v1/column.proto b/proto/greptime/v1/column.proto
index e32b69a..bb9f8b6 100644
--- a/proto/greptime/v1/column.proto
+++ b/proto/greptime/v1/column.proto
@@ -1,8 +1,22 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 syntax = "proto3";
 
 package greptime.v1;
 
-option java_package="io.greptime.v1";
+option java_package = "io.greptime.v1";
 option java_outer_classname = "Columns";
 option go_package = "github.com/GreptimeTeam/greptime-proto/go/greptime/v1";
 
@@ -43,7 +57,8 @@ message Column {
   }
   // The array of non-null values in this column.
   //
-  // For example: suppose there is a column "foo" that contains some int32 values (1, 2, 3, 4, 5, null, 7, 8, 9, null);
+  // For example: suppose there is a column "foo" that contains some int32
+  // values (1, 2, 3, 4, 5, null, 7, 8, 9, null);
   //   column:
   //     column_name: foo
   //     semantic_type: Tag
@@ -52,7 +67,8 @@ message Column {
   Values values = 3;
 
   // Mask maps the positions of null values.
-  // If a bit in null_mask is 1, it indicates that the column value at that position is null.
+  // If a bit in null_mask is 1, it indicates that the column value at that
+  // position is null.
   bytes null_mask = 4;
 
   // Helpful in creating vector from column.
diff --git a/proto/greptime/v1/common.proto b/proto/greptime/v1/common.proto
index c168103..e332fd9 100644
--- a/proto/greptime/v1/common.proto
+++ b/proto/greptime/v1/common.proto
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 syntax = "proto3";
 
 package greptime.v1;
@@ -31,14 +45,8 @@ message Basic {
   string password = 2;
 }
 
-message Token {
-  string token = 1;
-}
+message Token { string token = 1; }
 
-message AffectedRows {
-  uint32 value = 1;
-}
+message AffectedRows { uint32 value = 1; }
 
-message FlightMetadata {
-  AffectedRows affected_rows = 1;
-}
+message FlightMetadata { AffectedRows affected_rows = 1; }
diff --git a/proto/greptime/v1/database.proto b/proto/greptime/v1/database.proto
index e77c7c9..7fa7fb0 100644
--- a/proto/greptime/v1/database.proto
+++ b/proto/greptime/v1/database.proto
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 syntax = "proto3";
 
 package greptime.v1;
@@ -29,9 +43,7 @@ message GreptimeRequest {
 
 message GreptimeResponse {
   ResponseHeader header = 1;
-  oneof response {
-    AffectedRows affected_rows = 2;
-  }
+  oneof response { AffectedRows affected_rows = 2; }
 }
 
 message QueryRequest {
@@ -58,7 +70,8 @@ message InsertRequest {
 }
 
 message DeleteRequest {
-  // The table name to delete from. Catalog name and schema name are in the `RequestHeader`.
+  // The table name to delete from. Catalog name and schema name are in the
+  // `RequestHeader`.
   string table_name = 1;
 
   // The region number of current delete request.
diff --git a/proto/greptime/v1/ddl.proto b/proto/greptime/v1/ddl.proto
index a970543..9270cc8 100644
--- a/proto/greptime/v1/ddl.proto
+++ b/proto/greptime/v1/ddl.proto
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 syntax = "proto3";
 
 package greptime.v1;
@@ -8,8 +22,9 @@ option go_package = "github.com/GreptimeTeam/greptime-proto/go/greptime/v1";
 
 import "greptime/v1/column.proto";
 
-// "Data Definition Language" requests, that create, modify or delete the database structures but not the data.
-// `DdlRequest` could carry more information than plain SQL, for example, the "table_id" in `CreateTableExpr`.
+// "Data Definition Language" requests, that create, modify or delete the
+// database structures but not the data. `DdlRequest` could carry more
+// information than plain SQL, for example, the "table_id" in `CreateTableExpr`.
 // So create a new DDL expr if you need it.
 message DdlRequest {
   oneof expr {
@@ -58,35 +73,25 @@ message FlushTableExpr {
   string schema_name = 2;
   string table_name = 3;
   optional uint32 region_id = 4;
-} 
+}
 
 message CreateDatabaseExpr {
-  //TODO(hl): maybe rename to schema_name?
+  // TODO(hl): maybe rename to schema_name?
   string database_name = 1;
   bool create_if_not_exists = 2;
 }
 
-message AddColumns {
-  repeated AddColumn add_columns = 1;
-}
+message AddColumns { repeated AddColumn add_columns = 1; }
 
-message DropColumns {
-  repeated DropColumn drop_columns = 1;
-}
+message DropColumns { repeated DropColumn drop_columns = 1; }
 
-message RenameTable {
-  string new_table_name = 1;
-}
+message RenameTable { string new_table_name = 1; }
 
 message AddColumn {
   ColumnDef column_def = 1;
   bool is_key = 2;
 }
 
-message DropColumn {
-  string name = 1;
-}
+message DropColumn { string name = 1; }
 
-message TableId {
-  uint32 id = 1;
-}
+message TableId { uint32 id = 1; }
diff --git a/proto/greptime/v1/health.proto b/proto/greptime/v1/health.proto
index ca21a0e..d9a2e05 100644
--- a/proto/greptime/v1/health.proto
+++ b/proto/greptime/v1/health.proto
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 syntax = "proto3";
 
 package greptime.v1;
@@ -6,7 +20,6 @@ option java_package = "io.greptime.v1";
 option java_outer_classname = "Health";
 option go_package = "github.com/GreptimeTeam/greptime-proto/go/greptime/v1";
 
-
 service HealthCheck {
   rpc HealthCheck(HealthCheckRequest) returns (HealthCheckResponse);
 }
diff --git a/proto/greptime/v1/meta/cluster.proto b/proto/greptime/v1/meta/cluster.proto
index 1cda16e..9007229 100644
--- a/proto/greptime/v1/meta/cluster.proto
+++ b/proto/greptime/v1/meta/cluster.proto
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 syntax = "proto3";
 
 package greptime.v1.meta;
@@ -8,7 +22,7 @@ import "greptime/v1/meta/store.proto";
 
 // Cluster service is used for communication between meta nodes.
 service Cluster {
-  // Batch get kvs by input keys from leader's in_memory kv store. 
+  // Batch get kvs by input keys from leader's in_memory kv store.
   rpc BatchGet(BatchGetRequest) returns (BatchGetResponse);
 
   // Range get the kvs from leader's in_memory kv store.
diff --git a/proto/greptime/v1/meta/common.proto b/proto/greptime/v1/meta/common.proto
index 0c98406..fe005b5 100644
--- a/proto/greptime/v1/meta/common.proto
+++ b/proto/greptime/v1/meta/common.proto
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 syntax = "proto3";
 
 package greptime.v1.meta;
diff --git a/proto/greptime/v1/meta/heartbeat.proto b/proto/greptime/v1/meta/heartbeat.proto
index 60e870a..1c65621 100644
--- a/proto/greptime/v1/meta/heartbeat.proto
+++ b/proto/greptime/v1/meta/heartbeat.proto
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 syntax = "proto3";
 
 package greptime.v1.meta;
@@ -8,7 +22,8 @@ import "greptime/v1/meta/common.proto";
 
 service Heartbeat {
   // Heartbeat, there may be many contents of the heartbeat, such as:
-  // 1. Metadata to be registered to meta server and discoverable by other nodes.
+  // 1. Metadata to be registered to meta server and discoverable by other
+  // nodes.
   // 2. Some performance metrics, such as Load, CPU usage, etc.
   // 3. The number of computing tasks being executed.
   rpc Heartbeat(stream HeartbeatRequest) returns (stream HeartbeatResponse) {}
@@ -84,9 +99,7 @@ message HeartbeatResponse {
   MailboxMessage mailbox_message = 2;
 }
 
-message AskLeaderRequest {
-  RequestHeader header = 1;
-}
+message AskLeaderRequest { RequestHeader header = 1; }
 
 message AskLeaderResponse {
   ResponseHeader header = 1;
@@ -97,7 +110,8 @@ message AskLeaderResponse {
 message MailboxMessage {
   // The id is used to associate request and response.
   uint64 id = 1;
-  // The following information plays a bigger role in making messages traceable and facilitating debugging.
+  // The following information plays a bigger role in making messages traceable
+  // and facilitating debugging.
   string subject = 2;
   string from = 3;
   string to = 4;
@@ -105,7 +119,5 @@ message MailboxMessage {
   int64 timestamp_millis = 5;
 
   // The message body.
-  oneof payload {
-    string json = 6;
-  }
+  oneof payload { string json = 6; }
 }
diff --git a/proto/greptime/v1/meta/lock.proto b/proto/greptime/v1/meta/lock.proto
index be143a3..dbd9261 100644
--- a/proto/greptime/v1/meta/lock.proto
+++ b/proto/greptime/v1/meta/lock.proto
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 syntax = "proto3";
 
 package greptime.v1.meta;
@@ -7,8 +21,9 @@ option go_package = "github.com/GreptimeTeam/greptime-proto/go/greptime/v1/meta"
 import "greptime/v1/meta/common.proto";
 
 service Lock {
-  // Lock acquires a distributed shared lock on a given named lock. On success, it
-  // will return a unique key that exists so long as the lock is held by the caller.
+  // Lock acquires a distributed shared lock on a given named lock. On success,
+  // it will return a unique key that exists so long as the lock is held by the
+  // caller.
   rpc Lock(LockRequest) returns (LockResponse);
 
   // Unlock takes a key returned by Lock and releases the hold on lock.
@@ -21,8 +36,8 @@ message LockRequest {
   // Name is the identifier for the distributed shared lock to be acquired.
   bytes name = 2;
 
-  // If the expiration time is exceeded and currently holds the lock, the lock is
-  // automatically released.
+  // If the expiration time is exceeded and currently holds the lock, the lock
+  // is automatically released.
   int64 expire_secs = 3;
 }
 
@@ -40,6 +55,4 @@ message UnlockRequest {
   bytes key = 2;
 }
 
-message UnlockResponse {
-  ResponseHeader header = 1;
-}
+message UnlockResponse { ResponseHeader header = 1; }
diff --git a/proto/greptime/v1/meta/route.proto b/proto/greptime/v1/meta/route.proto
index 7eaf3e2..441d8d6 100644
--- a/proto/greptime/v1/meta/route.proto
+++ b/proto/greptime/v1/meta/route.proto
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 syntax = "proto3";
 
 package greptime.v1.meta;
@@ -11,7 +25,7 @@ service Router {
 
   // Fetch routing information for tables. The smallest unit is the complete
   // routing information(all regions) of a table.
-  // 
+  //
   // ```text
   // table_1
   //    table_name
@@ -50,7 +64,7 @@ message RouteRequest {
 message DeleteRequest {
   RequestHeader header = 1;
 
-  TableName table_name = 2; 
+  TableName table_name = 2;
 }
 
 message RouteResponse {
@@ -84,7 +98,7 @@ message Region {
   uint64 id = 1;
   string name = 2;
   Partition partition = 3;
-  
+
   map<string, string> attrs = 100;
 }
 
@@ -96,6 +110,6 @@ message Partition {
 
 // This message is only for saving into store.
 message TableRouteValue {
-  repeated Peer peers = 1; 
+  repeated Peer peers = 1;
   TableRoute table_route = 2;
 }
diff --git a/proto/greptime/v1/meta/store.proto b/proto/greptime/v1/meta/store.proto
index c17478c..34832df 100644
--- a/proto/greptime/v1/meta/store.proto
+++ b/proto/greptime/v1/meta/store.proto
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 syntax = "proto3";
 
 package greptime.v1.meta;
@@ -56,7 +70,7 @@ message RangeRequest {
 
 message RangeResponse {
   ResponseHeader header = 1;
-  
+
   // kvs is the list of key-value pairs matched by the range request.
   repeated KeyValue kvs = 2;
   // more indicates if there are more keys to return in the requested range.
@@ -130,7 +144,6 @@ message BatchDeleteResponse {
   repeated KeyValue prev_kvs = 2;
 }
 
-
 message CompareAndPutRequest {
   RequestHeader header = 1;
 
@@ -140,7 +153,7 @@ message CompareAndPutRequest {
   bytes expect = 3;
   // value is the value, in bytes, to associate with the key in the
   // key-value store.
-  bytes value = 4; 
+  bytes value = 4;
 }
 
 message CompareAndPutResponse {
diff --git a/proto/greptime/v1/prom.proto b/proto/greptime/v1/prom.proto
index 177fc91..14599c5 100644
--- a/proto/greptime/v1/prom.proto
+++ b/proto/greptime/v1/prom.proto
@@ -1,3 +1,17 @@
+// Copyright 2023 Greptime Team
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 syntax = "proto3";
 
 package greptime.v1;