fix(upload): handle negative file size during streaming uploads

Author: j2rong4cn

internal/op/fs.go

@@ -630,6 +630,11 @@ func Put(ctx context.Context, storage driver.Driver, dstDirPath string, file mod
 		up = func(p float64) {}
 	}
 
+	// 如果小于0，则通过缓存获取完整大小，可能发生于流式上传
+	if file.GetSize() < 0 {
+		log.Warnf("file size < 0, try to get full size from cache")
+		file.CacheFullAndWriter(nil, nil)
+	}
 	switch s := storage.(type) {
 	case driver.PutResult:
 		var newObj model.Obj

server/handles/fsup.go

@@ -56,6 +56,7 @@ func FsStream(c *gin.Context) {
 		}
 	}
 	dir, name := stdpath.Split(path)
+	// 如果请求头 Content-Length 和 File-Size 都没有，则 size=-1，表示未知大小的流式上传
 	size := c.Request.ContentLength
 	if size < 0 {
 		sizeStr := c.GetHeader("File-Size")