[#74] Replace atomics with mutex for reloadable params

Signed-off-by: Marina Biryukova <m.biryukova@yadro.com>

internal/handler/handler.go

@@ -5,7 +5,6 @@ import (
 	"errors"
 	"io"
 	"net/url"
-	"sync/atomic"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
@@ -21,43 +20,26 @@ import (
 	"go.uber.org/zap"
 )
 
+type Config interface {
+	DefaultTimestamp() bool
+	ZipCompression() bool
+}
+
 type Handler struct {
 	log               *zap.Logger
 	pool              *pool.Pool
 	ownerID           *user.ID
-	settings          *Settings
+	config            Config
 	containerResolver *resolver.ContainerResolver
 	tree              *tree.Tree
 }
 
-// Settings stores reloading parameters, so it has to provide atomic getters and setters.
-type Settings struct {
-	defaultTimestamp atomic.Bool
-	zipCompression   atomic.Bool
-}
-
-func (s *Settings) DefaultTimestamp() bool {
-	return s.defaultTimestamp.Load()
-}
-
-func (s *Settings) SetDefaultTimestamp(val bool) {
-	s.defaultTimestamp.Store(val)
-}
-
-func (s *Settings) ZipCompression() bool {
-	return s.zipCompression.Load()
-}
-
-func (s *Settings) SetZipCompression(val bool) {
-	s.zipCompression.Store(val)
-}
-
-func New(params *utils.AppParams, settings *Settings, tree *tree.Tree) *Handler {
+func New(params *utils.AppParams, config Config, tree *tree.Tree) *Handler {
 	return &Handler{
 		log:               params.Logger,
 		pool:              params.Pool,
 		ownerID:           params.Owner,
-		settings:          settings,
+		config:            config,
 		containerResolver: params.Resolver,
 		tree:              tree,
 	}