优化U115Pan类的文件上传功能，支持多线程并发上传和动态分片计算，提升上传效率和稳定性。

app/modules/filemanager/storages/u115.py

@@ -4,8 +4,11 @@ import json
 import secrets
 import threading
 import time
+from concurrent.futures import ThreadPoolExecutor, as_completed
 from pathlib import Path
+from queue import Queue
 from typing import List, Dict, Optional, Tuple, Union
+import io
 
 import oss2
 import requests
@@ -54,6 +57,11 @@ class U115Pan(StorageBase, metaclass=Singleton):
     # CID和路径缓存
     _id_cache: Dict[str, str] = {}
 
+    # 最大线程数
+    MAX_WORKERS = 10
+    # 最大分片大小(1GB)
+    MAX_PART_SIZE = 1024 * 1024 * 1024
+
     def __init__(self):
         super().__init__()
         self.session = requests.Session()
@@ -399,16 +407,63 @@ class U115Pan(StorageBase, metaclass=Singleton):
             modify_time=int(time.time())
         )
 
+    def _calc_parts(self, file_size: int) -> Tuple[int, int]:
+        """
+        计算最优分片大小和线程数
+        """
+        # 根据文件大小计算合适的分片数
+        if file_size <= 100 * 1024 * 1024:  # 小于100MB
+            return 10 * 1024 * 1024, min(3, self.MAX_WORKERS)  # 10MB分片
+        elif file_size <= 1024 * 1024 * 1024:  # 小于1GB
+            return 100 * 1024 * 1024, min(5, self.MAX_WORKERS)  # 100MB分片
+        else:
+            # 文件较大,使用较大分片
+            part_size = min(file_size // self.MAX_WORKERS, self.MAX_PART_SIZE)
+            return part_size, min(file_size // part_size + 1, self.MAX_WORKERS)
+
+    def _upload_part(self, bucket: oss2.Bucket, object_name: str, upload_id: str,
+                    part_number: int, part_data: bytes, progress_queue: Queue) -> PartInfo:
+        """
+        上传单个分片
+        """
+        try:
+            result = bucket.upload_part(object_name, upload_id, part_number, part_data)
+            part_info = PartInfo(part_number, result.etag)
+            # 将上传进度放入队列
+            progress_queue.put(len(part_data))
+            logger.info(f"【115】分片 {part_number} 上传完成")
+            return part_info
+        except Exception as e:
+            logger.error(f"【115】分片 {part_number} 上传失败: {str(e)}")
+            raise
+
+    def _log_progress(self, desc: str, total: int) -> tqdm:
+        """
+        创建一个可以输出到日志的进度条
+        """
+        class TqdmToLogger(io.StringIO):
+            def write(s, buf):
+                buf = buf.strip('\r\n\t ')
+                if buf:
+                    logger.info(buf)
+
+        return tqdm(
+            total=total,
+            unit='B',
+            unit_scale=True,
+            desc=desc,
+            file=TqdmToLogger(),
+            mininterval=1.0,
+            maxinterval=5.0,
+            miniters=1
+        )
+
     def upload(self, target_dir: schemas.FileItem, local_path: Path,
                new_name: Optional[str] = None) -> Optional[schemas.FileItem]:
         """
-        实现带秒传、断点续传和二次认证的文件上传
+        实现带秒传、断点续传和多线程并发上传
         """
-
         def encode_callback(cb: dict):
-            """
-            回调参数Base64编码函数
-            """
             return oss2.utils.b64encode_as_string(json.dumps(cb).strip())
 
         target_name = new_name or local_path.name
@@ -440,6 +495,7 @@ class U115Pan(StorageBase, metaclass=Singleton):
         if not init_resp.get("state"):
             logger.warn(f"【115】初始化上传失败: {init_resp.get('error')}")
             return None
+        
         # 结果
         init_result = init_resp.get("data")
         logger.debug(f"【115】上传 Step 1 初始化结果: {init_result}")
@@ -457,15 +513,10 @@ class U115Pan(StorageBase, metaclass=Singleton):
             sign_checks = sign_check.split("-")
             start = int(sign_checks[0])
             end = int(sign_checks[1])
-            # 计算指定区间的SHA1
-            # sign_check （用下划线隔开,截取上传文内容的sha1）(单位是byte): "2392148-2392298"
             with open(local_path, "rb") as f:
-                # 取2392148-2392298之间的内容(包含2392148、2392298)的sha1
                 f.seek(start)
                 chunk = f.read(end - start + 1)
                 sign_val = hashlib.sha1(chunk).hexdigest().upper()
-            # 重新初始化请求
-            # sign_key，sign_val(根据sign_check计算的值大写的sha1值)
             init_data.update({
                 "pick_code": pick_code,
                 "sign_key": sign_key,
@@ -478,7 +529,6 @@ class U115Pan(StorageBase, metaclass=Singleton):
             )
             if not init_resp:
                 return None
-            # 二次认证结果
             init_result = init_resp.get("data")
             logger.debug(f"【115】上传 Step 2 二次认证结果: {init_result}")
             if not pick_code:
@@ -505,7 +555,7 @@ class U115Pan(StorageBase, metaclass=Singleton):
             logger.warn("【115】获取上传凭证失败")
             return None
         logger.debug(f"【115】上传 Step 4 获取上传凭证结果: {token_resp}")
-        # 上传凭证
+        
         endpoint = token_resp.get("endpoint")
         AccessKeyId = token_resp.get("AccessKeyId")
         AccessKeySecret = token_resp.get("AccessKeySecret")
@@ -528,69 +578,89 @@ class U115Pan(StorageBase, metaclass=Singleton):
             if resume_resp.get("callback"):
                 callback = resume_resp["callback"]
 
-        # Step 6: 对象存储上传
+        # Step 6: 多线程分片上传
         auth = oss2.StsAuth(
             access_key_id=AccessKeyId,
             access_key_secret=AccessKeySecret,
             security_token=SecurityToken
         )
-        bucket = oss2.Bucket(auth, endpoint, bucket_name)  # noqa
-        # 处理oss请求回调
-        callback_dict = json.loads(callback.get("callback"))
-        callback_var_dict = json.loads(callback.get("callback_var"))
-        # 补充参数
-        logger.debug(f"【115】上传 Step 6 回调参数：{callback_dict} {callback_var_dict}")
-        # 填写不能包含Bucket名称在内的Object完整路径，例如exampledir/exampleobject.txt。
-        # determine_part_size方法用于确定分片大小，设置分片大小为 100M
-        part_size = determine_part_size(file_size, preferred_size=100 * 1024 * 1024)
+        bucket = oss2.Bucket(auth, endpoint, bucket_name)
+
+        # 计算分片大小和线程数
+        part_size, workers = self._calc_parts(file_size)
+        logger.info(f"【115】开始上传: {local_path} -> {target_path}，"
+                   f"分片大小：{StringUtils.str_filesize(part_size)}，线程数：{workers}")
 
         # 初始化进度条
-        logger.info(f"【115】开始上传: {local_path} -> {target_path}，分片大小：{StringUtils.str_filesize(part_size)}")
-        progress_bar = tqdm(
-            total=file_size,
-            unit='B',
-            unit_scale=True,
-            desc="上传进度",
-            ascii=True
-        )
+        progress_bar = self._log_progress(f"【115】{target_name} 上传进度", file_size)
 
-        # 初始化分片
+        # 初始化分片上传
         upload_id = bucket.init_multipart_upload(object_name,
-                                                 params={
-                                                     "encoding-type": "url",
-                                                     "sequential": ""
-                                                 }).upload_id
-        parts = []
-        # 逐个上传分片
-        with open(local_path, 'rb') as fileobj:
-            part_number = 1
-            offset = 0
-            while offset < file_size:
-                num_to_upload = min(part_size, file_size - offset)
-                # 调用SizedFileAdapter(fileobj, size)方法会生成一个新的文件对象，重新计算起始追加位置。
-                logger.info(f"【115】开始上传 {target_name} 分片 {part_number}: {offset} -> {offset + num_to_upload}")
-                result = bucket.upload_part(object_name, upload_id, part_number,
-                                            data=SizedFileAdapter(fileobj, num_to_upload))
-                parts.append(PartInfo(part_number, result.etag))
-                logger.info(f"【115】{target_name} 分片 {part_number} 上传完成")
-                offset += num_to_upload
-                part_number += 1
-                # 更新进度
-                progress_bar.update(num_to_upload)
+                                               params={
+                                                   "encoding-type": "url",
+                                                   "sequential": ""
+                                               }).upload_id
 
-        # 关闭进度条
-        if progress_bar:
-            progress_bar.close()
+        # 创建进度队列
+        progress_queue = Queue()
+        
+        # 创建线程池
+        with ThreadPoolExecutor(max_workers=workers) as pool:
+            futures = []
+            parts = []
+            
+            # 提交上传任务
+            with open(local_path, 'rb') as fileobj:
+                part_number = 1
+                offset = 0
+                while offset < file_size:
+                    size = min(part_size, file_size - offset)
+                    fileobj.seek(offset)
+                    part_data = fileobj.read(size)
+                    future = pool.submit(
+                        self._upload_part,
+                        bucket,
+                        object_name,
+                        upload_id,
+                        part_number,
+                        part_data,
+                        progress_queue
+                    )
+                    futures.append(future)
+                    offset += size
+                    part_number += 1
 
-        # 请求头
+            # 更新进度条
+            while len(parts) < len(futures):
+                try:
+                    uploaded = progress_queue.get(timeout=1)
+                    progress_bar.update(uploaded)
+                except:
+                    pass
+
+            # 等待所有任务完成
+            for future in as_completed(futures):
+                try:
+                    part_info = future.result()
+                    parts.append(part_info)
+                except Exception as e:
+                    logger.error(f"【115】分片上传失败: {str(e)}")
+                    progress_bar.close()
+                    return None
+
+        # 按分片号排序
+        parts.sort(key=lambda x: x.part_number)
+
+        # 完成上传
         headers = {
-            'X-oss-callback': encode_callback(callback_dict),
-            'x-oss-callback-var': encode_callback(callback_var_dict),
+            'X-oss-callback': encode_callback(callback["callback"]),
+            'x-oss-callback-var': encode_callback(callback["callback_var"]),
             'x-oss-forbid-overwrite': 'false'
         }
+        
         try:
             result = bucket.complete_multipart_upload(object_name, upload_id, parts,
-                                                      headers=headers)
+                                                    headers=headers)
             if result.status == 200:
                 logger.debug(f"【115】上传 Step 6 回调结果：{result.resp.response.json()}")
                 logger.info(f"【115】{target_name} 上传成功")
@@ -603,6 +673,9 @@ class U115Pan(StorageBase, metaclass=Singleton):
             else:
                 logger.error(f"【115】{target_name} 上传失败: {e.status}, 错误码: {e.code}, 详情: {e.message}")
                 return None
+        finally:
+            progress_bar.close()
+
         # 返回结果
         return self.get_item(target_path)