From 31eb6617fc22ab945ccc0f57bc54eac24dd60353 Mon Sep 17 00:00:00 2001
From: Leonard Lyubich <leonard@nspcc.ru>
Date: Wed, 12 May 2021 11:00:46 +0300
Subject: [PATCH] [#493] node: Abolish non-usable gRPC server configurations

Reflect service is disabled, max message size frozen by constant.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
---
 cmd/neofs-node/config.go | 21 ++++++++-------------
 cmd/neofs-node/grpc.go   |  9 +--------
 2 files changed, 9 insertions(+), 21 deletions(-)

diff --git a/cmd/neofs-node/config.go b/cmd/neofs-node/config.go
index a46e2f1b..e97585f6 100644
--- a/cmd/neofs-node/config.go
+++ b/cmd/neofs-node/config.go
@@ -67,10 +67,8 @@ const (
 	cfgNodeAttributePrefix = "node.attribute"
 
 	// config keys for cfgGRPC
-	cfgListenAddress  = "grpc.endpoint"
-	cfgMaxMsgSize     = "grpc.maxmessagesize"
-	cfgReflectService = "grpc.enable_reflect_service"
-	cfgDialTimeout    = "grpc.dial_timeout"
+	cfgListenAddress = "grpc.endpoint"
+	cfgDialTimeout   = "grpc.dial_timeout"
 
 	// config keys for cfgMorph
 	cfgMorphRPCAddress = "morph.rpc_endpoint"
@@ -166,6 +164,8 @@ const (
 	addressSize = 72 // 32 bytes oid, 32 bytes cid, 8 bytes protobuf encoding
 )
 
+const maxMsgSize = 4 << 20 // transport msg limit 4 MiB
+
 type cfg struct {
 	ctx context.Context
 
@@ -228,8 +228,6 @@ type cfgGRPC struct {
 	maxChunkSize uint64
 
 	maxAddrAmount uint64
-
-	enableReflectService bool
 }
 
 type cfgMorph struct {
@@ -364,8 +362,8 @@ func initCfg(path string) *cfg {
 	netAddr, err := network.AddressFromString(viperCfg.GetString(cfgBootstrapAddress))
 	fatalOnErr(err)
 
-	maxChunkSize := viperCfg.GetUint64(cfgMaxMsgSize) * 3 / 4 // 25% to meta, 75% to payload
-	maxAddrAmount := maxChunkSize / addressSize               // each address is about 72 bytes
+	maxChunkSize := uint64(maxMsgSize) * 3 / 4          // 25% to meta, 75% to payload
+	maxAddrAmount := uint64(maxChunkSize) / addressSize // each address is about 72 bytes
 
 	state := newNetworkState()
 
@@ -413,9 +411,8 @@ func initCfg(path string) *cfg {
 			attributes: parseAttributes(viperCfg),
 		},
 		cfgGRPC: cfgGRPC{
-			maxChunkSize:         maxChunkSize,
-			maxAddrAmount:        maxAddrAmount,
-			enableReflectService: viperCfg.GetBool(cfgReflectService),
+			maxChunkSize:  maxChunkSize,
+			maxAddrAmount: maxAddrAmount,
 		},
 		localAddr: netAddr,
 		respSvc: response.NewService(
@@ -468,8 +465,6 @@ func defaultConfiguration(v *viper.Viper) {
 	v.SetDefault(cfgMorphNotifyDialTimeout, 5*time.Second)
 
 	v.SetDefault(cfgListenAddress, "127.0.0.1:50501") // listen address
-	v.SetDefault(cfgMaxMsgSize, 4<<20)                // transport msg limit 4 MiB
-	v.SetDefault(cfgReflectService, false)
 	v.SetDefault(cfgDialTimeout, 5*time.Second)
 
 	v.SetDefault(cfgAccountingContract, "1aeefe1d0dfade49740fff779c02cd4a0538ffb1")
diff --git a/cmd/neofs-node/grpc.go b/cmd/neofs-node/grpc.go
index aaed1aca..050c408b 100644
--- a/cmd/neofs-node/grpc.go
+++ b/cmd/neofs-node/grpc.go
@@ -7,7 +7,6 @@ import (
 	"github.com/nspcc-dev/neofs-node/pkg/util/logger"
 	"go.uber.org/zap"
 	"google.golang.org/grpc"
-	"google.golang.org/grpc/reflection"
 )
 
 func initGRPC(c *cfg) {
@@ -17,7 +16,7 @@ func initGRPC(c *cfg) {
 	fatalOnErr(err)
 
 	c.cfgGRPC.server = grpc.NewServer(
-		grpc.MaxSendMsgSize(c.viper.GetInt(cfgMaxMsgSize)),
+		grpc.MaxSendMsgSize(maxMsgSize),
 	)
 
 	c.onShutdown(func() {
@@ -33,12 +32,6 @@ func serveGRPC(c *cfg) {
 			c.wg.Done()
 		}()
 
-		// read more about reflect service at
-		// https://github.com/grpc/grpc-go/blob/master/Documentation/server-reflection-tutorial.md
-		if c.cfgGRPC.enableReflectService {
-			reflection.Register(c.cfgGRPC.server)
-		}
-
 		if err := c.cfgGRPC.server.Serve(c.cfgGRPC.listener); err != nil {
 			fmt.Println("gRPC server error", err)
 		}