file: Optimize put interface

Signed-off-by: swj <1186093704@qq.com>

Author: 201341

pkg/object/file.go

@@ -135,7 +135,7 @@ func (d *filestore) Put(key string, in io.Reader) error {
 	}()
 	buf := bufPool.Get().(*[]byte)
 	defer bufPool.Put(buf)
-	_, err = io.CopyBuffer(f, in, *buf)
+	_, err = io.CopyBuffer(onlyWriter{f}, in, *buf)
 	if err != nil {
 		_ = f.Close()
 		return err

pkg/object/object_storage.go

@@ -20,6 +20,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"io"
 	"os"
 	"sync"
 	"time"
@@ -42,6 +43,10 @@ type File interface {
 	Mode() os.FileMode
 }
 
+type onlyWriter struct {
+	io.Writer
+}
+
 type file struct {
 	obj
 	owner string