[#70] Support configuring buffer size for put

Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>

cmd/http-gw/app.go

@@ -72,10 +72,11 @@ type (
 
 	// appSettings stores reloading parameters, so it has to provide getters and setters which use RWMutex.
 	appSettings struct {
-		mu               sync.RWMutex
-		defaultTimestamp bool
-		zipCompression   bool
-		clientCut        bool
+		mu                  sync.RWMutex
+		defaultTimestamp    bool
+		zipCompression      bool
+		clientCut           bool
+		bufferMaxSizeForPut uint64
 	}
 )
 
@@ -177,6 +178,18 @@ func (s *appSettings) setClientCut(val bool) {
 	s.mu.Unlock()
 }
 
+func (s *appSettings) BufferMaxSizeForPut() uint64 {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	return s.bufferMaxSizeForPut
+}
+
+func (s *appSettings) setBufferMaxSizeForPut(val uint64) {
+	s.mu.Lock()
+	s.bufferMaxSizeForPut = val
+	s.mu.Unlock()
+}
+
 func (a *app) initAppSettings() {
 	a.settings = &appSettings{}
 
@@ -462,6 +475,7 @@ func (a *app) updateSettings() {
 	a.settings.setDefaultTimestamp(a.cfg.GetBool(cfgUploaderHeaderEnableDefaultTimestamp))
 	a.settings.setZipCompression(a.cfg.GetBool(cfgZipCompression))
 	a.settings.setClientCut(a.cfg.GetBool(cfgClientCut))
+	a.settings.setBufferMaxSizeForPut(a.cfg.GetUint64(cfgBufferMaxSizeForPut))
 }
 
 func (a *app) startServices() {

cmd/http-gw/settings.go

@@ -39,6 +39,8 @@ const (
 
 	defaultSoftMemoryLimit = math.MaxInt64
 
+	defaultBufferMaxSizeForPut = 1024 * 1024 // 1mb
+
 	cfgServer      = "server"
 	cfgTLSEnabled  = "tls.enabled"
 	cfgTLSCertFile = "tls.cert_file"
@@ -98,6 +100,8 @@ const (
 
 	// Enabling client side object preparing for PUT operations.
 	cfgClientCut = "frostfs.client_cut"
+	// Sets max buffer size for read payload in put operations.
+	cfgBufferMaxSizeForPut = "frostfs.buffer_max_size_for_put"
 
 	// Command line args.
 	cmdHelp          = "help"
@@ -160,6 +164,9 @@ func settings() *viper.Viper {
 	// pool:
 	v.SetDefault(cfgPoolErrorThreshold, defaultPoolErrorThreshold)
 
+	// frostfs:
+	v.SetDefault(cfgBufferMaxSizeForPut, defaultBufferMaxSizeForPut)
+
 	// web-server:
 	v.SetDefault(cfgWebReadBufferSize, 4096)
 	v.SetDefault(cfgWebWriteBufferSize, 4096)