upgrade protoc to 3.17.3

$brew install protobuf
$ protoc --version
libprotoc 3.17.3
$ go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.26
$ go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.1

weed/server/filer_server.go

@@ -3,6 +3,7 @@ package weed_server
 import (
 	"context"
 	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"net/http"
 	"os"
 	"sync"
@@ -65,6 +66,7 @@ type FilerOption struct {
 }
 
 type FilerServer struct {
+	filer_pb.UnimplementedSeaweedFilerServer
 	option         *FilerOption
 	secret         security.SigningKey
 	filer          *filer.Filer

weed/server/master_server.go

@@ -49,6 +49,7 @@ type MasterOption struct {
 }
 
 type MasterServer struct {
+	master_pb.UnimplementedSeaweedServer
 	option *MasterOption
 	guard  *security.Guard
 

weed/server/volume_server.go

@@ -2,6 +2,7 @@ package weed_server
 
 import (
 	"github.com/chrislusf/seaweedfs/weed/pb"
+	"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
 	"github.com/chrislusf/seaweedfs/weed/storage/types"
 	"net/http"
 	"sync"
@@ -17,6 +18,7 @@ import (
 )
 
 type VolumeServer struct {
+	volume_server_pb.UnimplementedVolumeServerServer
 	inFlightUploadDataSize        int64
 	inFlightDownloadDataSize      int64
 	concurrentUploadLimit         int64