update

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.12-slim AS builder
+FROM python:3.13-slim AS builder
 
 WORKDIR /app
 
@@ -9,7 +9,7 @@ COPY . .
 
 RUN python -m compileall -b .
 
-FROM python:3.12-slim
+FROM python:3.13-slim
 
 WORKDIR /app
 

favicon_app/models/favicon.py

@@ -101,14 +101,14 @@ class Favicon:
                 self.scheme = 'http'
 
             # 检查域名合法性
-            if self.domain and not self._check_url(self.domain):
+            if self.domain and not _check_url(self.domain):
                 self.domain = None
 
             # 生成域名MD5哈希值
             if self.domain:
                 self.domain_md5 = hashlib.md5(self.domain.encode("utf-8")).hexdigest()
         except Exception as e:
-            failed_url_cache(self.domain, setting.time_of_1_days)
+            failed_urls[self.domain] = setting.time_of_1_days + int(time.time())
             self.scheme = None
             self.domain = None
             logger.error('URL解析错误: %s, URL: %s', str(e), url)
@@ -163,6 +163,21 @@ class Favicon:
             self._get_icon_url(icon_path)
         return self.icon_url
 
+    def get_base_url(self) -> Optional[str]:
+        """获取网站基础URL
+
+        Returns:
+            网站基础URL
+        """
+        if not self.domain or '.' not in self.domain:
+            return None
+
+        _url = f"{self.scheme}://{self.domain}"
+        if self.port and self.port not in [80, 443]:
+            _url += f":{self.port}"
+
+        return _url
+
     def get_icon_file(self, icon_path: str, default: bool = False) -> Tuple[Optional[bytes], Optional[str]]:
         """获取图标文件内容和类型
         
@@ -187,7 +202,7 @@ class Favicon:
                     _content = base64.b64decode(data_uri[-1])
                     _ct = data_uri[0].split(';')[0].split(':')[-1]
             else:
-                _content, _ct = self._req_get(self.icon_url, domain=self.domain)
+                _content, _ct = _req_get(self.icon_url, domain=self.domain)
 
             # 验证是否为图片
             # image/* application/x-ico
@@ -202,21 +217,6 @@ class Favicon:
 
         return None, None
 
-    def get_base_url(self) -> Optional[str]:
-        """获取网站基础URL
-
-        Returns:
-            网站基础URL
-        """
-        if not self.domain or '.' not in self.domain:
-            return None
-
-        _url = f"{self.scheme}://{self.domain}"
-        if self.port and self.port not in [80, 443]:
-            _url += f":{self.port}"
-
-        return _url
-
     def req_get(self) -> Optional[bytes]:
         """获取网站首页内容
         
@@ -227,7 +227,7 @@ class Favicon:
             return None
 
         _url = self.get_base_url()
-        _content, _ct = self._req_get(_url, domain=self.domain)
+        _content, _ct = _req_get(_url, domain=self.domain)
 
         # 验证类型并检查大小
         if _ct and ('text' in _ct or 'html' in _ct or 'xml' in _ct):
@@ -238,13 +238,51 @@ class Favicon:
 
         return None
 
-    @staticmethod
+
-    def _req_get(
+def _check_internal(domain: str) -> bool:
-            url: str,
+    """检查网址是否非内网地址
+
+    Args:
+        domain: 域名
+
+    Returns:
+        True: 非内网；False: 是内网/无法解析
+    """
+    try:
+        # 检查是否为IP地址
+        if domain.replace('.', '').isdigit():
+            return not ipaddress.ip_address(domain).is_private
+        else:
+            # 解析域名获取IP地址
+            ips = socket.getaddrinfo(domain, None)
+            for ip_info in ips:
+                ip = ip_info[4][0]
+                if '.' in ip:
+                    if not ipaddress.ip_address(ip).is_private:
+                        return True
+            return False
+    except Exception as e:
+        failed_urls[domain] = setting.time_of_1_days + int(time.time())
+        logger.error('解析域名出错: %s, 错误: %s', domain, str(e))
+        return False
+
+
+def _check_url(domain: str) -> bool:
+    """检查域名是否合法且非内网地址
+
+    Args:
+        domain: 域名
+
+    Returns:
+        域名是否合法且非内网地址
+    """
+    return _pattern_domain.match(domain) and _check_internal(domain)
+
+
+def _req_get(url: str,
              domain: str,
              retries: int = DEFAULT_RETRIES,
-            timeout: int = DEFAULT_TIMEOUT
+             timeout: int = DEFAULT_TIMEOUT) -> Tuple[Optional[bytes], Optional[str]]:
-    ) -> Tuple[Optional[bytes], Optional[str]]:
     """发送HTTP GET请求获取内容
 
     Args:
@@ -287,75 +325,30 @@ class Favicon:
 
                 return req.content, ct_type
             else:
-                    failed_url_cache(domain, setting.time_of_7_days)
+                failed_urls[domain] = setting.time_of_1_hours + int(time.time())
                 logger.error('请求失败: %d, URL: %s', req.status_code, url)
                 break
         except (ConnectTimeoutError, ReadTimeoutError) as e:
             retry_count += 1
             if retry_count > retries:
+                failed_urls[domain] = setting.time_of_5_minus + int(time.time())
                 logger.error('请求超时: %s, URL: %s', str(e), url)
             else:
                 logger.warning('请求超时，正在重试(%d/%d): %s', retry_count, retries, url)
                 continue
         except MaxRetryError as e:
+            failed_urls[domain] = setting.time_of_1_hours + int(time.time())
             logger.error('重定向次数过多: %s, URL: %s', str(e), url)
             break
         except Exception as e:
-                failed_url_cache(domain, setting.time_of_7_days)
+            failed_urls[domain] = setting.time_of_1_hours + int(time.time())
             logger.error('请求异常: %s, URL: %s', str(e), url)
             break
 
     return None, None
 
-    @staticmethod
-    def _check_url(domain: str) -> bool:
-        """检查域名是否合法且非内网地址
-        
-        Args:
-            domain: 域名
-            
-        Returns:
-            域名是否合法且非内网地址
-        """
-        return Favicon.check_internal(domain) and _pattern_domain.match(domain)
-
-    @staticmethod
-    def check_internal(domain: str) -> bool:
-        """检查网址是否非内网地址
-        
-        Args:
-            domain: 域名
-            
-        Returns:
-            True: 非内网；False: 是内网/无法解析
-        """
-        try:
-            # 检查是否为IP地址
-            if domain.replace('.', '').isdigit():
-                return not ipaddress.ip_address(domain).is_private
-            else:
-                # 解析域名获取IP地址
-                ips = socket.getaddrinfo(domain, None)
-                for ip_info in ips:
-                    ip = ip_info[4][0]
-                    if '.' in ip:
-                        if not ipaddress.ip_address(ip).is_private:
-                            return True
-                return False
-        except Exception as e:
-            failed_url_cache(domain, setting.time_of_7_days)
-            logger.error('解析域名出错: %s, 错误: %s', domain, str(e))
-            return False
-
 
 # 域名验证正则表达式
 _pattern_domain = re.compile(
     r'[a-zA-Z0-9\u4E00-\u9FA5][-a-zA-Z0-9\u4E00-\u9FA5]{0,62}(\.[a-zA-Z0-9\u4E00-\u9FA5][-a-zA-Z0-9\u4E00-\u9FA5]{0,62})+\.?',
     re.I)
-
-
-def failed_url_cache(_domain: str, _time: int):
-    if _domain:
-        _current_time = int(time.time())
-        if (not failed_urls.get(_domain)) or (_current_time <= failed_urls.get(_domain)):
-            failed_urls[_domain] = _current_time + _time

favicon_app/routes/favicon_routes.py

@@ -19,9 +19,6 @@ logger = logging.getLogger(__name__)
 _icon_root_path = setting.icon_root_path
 _default_icon_path = setting.default_icon_path
 
-# 创建全局服务实例
-_service = favicon_service.FaviconService()
-
 # 创建FastAPI路由器
 favicon_router = APIRouter(prefix="", tags=["favicon"])
 
@@ -35,30 +32,30 @@ def get_favicon(
         refresh: Optional[str] = Query(None, include_in_schema=False),
 ):
     """获取网站图标"""
-    return _service.get_favicon_handler(request, bg_tasks, url, refresh)
+    return favicon_service.get_favicon_handler(request, bg_tasks, url, refresh)
 
 
 @favicon_router.get('/icon/default')
 async def get_default_icon():
     """获取默认图标"""
-    return _service.get_default()
+    return favicon_service.get_default()
 
 
 @favicon_router.get('/icon/referer', include_in_schema=False)
 async def get_referrer(unique: Optional[str] = Query(None)):
     """获取请求来源信息，带unique参数时会进行去重处理"""
     content = 'None'
-    path = os.path.join(_icon_root_path, 'data', 'referer.txt')
+    _path = os.path.join(_icon_root_path, 'data', 'referer.txt')
 
-    if os.path.exists(path):
+    if os.path.exists(_path):
         try:
-            content = FileUtil.read_file(path, mode='r') or 'None'
+            content = FileUtil.read_file(_path, mode='r') or 'None'
 
             if unique in ['true', '1']:
                 lines = [line.strip() for line in content.split('\n') if line.strip()]
                 unique_lines = list(set(lines))
                 unique_content = '\n'.join(unique_lines)
-                FileUtil.write_file(path, unique_content, mode='w')
+                FileUtil.write_file(_path, unique_content, mode='w')
                 content = unique_content
         except Exception as e:
             logger.error(f"读取referer文件失败: {e}")

favicon_app/routes/favicon_service.py

@@ -7,7 +7,7 @@ import random
 import re
 import time
 import warnings
-from typing import Optional, Tuple, List
+from typing import Optional, Tuple
 
 import bs4
 import urllib3
@@ -31,193 +31,76 @@ warnings.filterwarnings("ignore", category=XMLParsedAsHTMLWarning)
 _current_dir = os.path.dirname(os.path.abspath(__file__))
 
 
-class FaviconService:
+def get_favicon_handler(request: Request,
-    """图标服务类，封装所有与图标获取、缓存和处理相关的功能"""
+                        bg_tasks: BackgroundTasks,
+                        url: Optional[str] = None,
+                        refresh: Optional[str] = None) -> dict[str, str] | Response:
+    """处理获取图标的请求"""
 
-    def __init__(self):
+    # 验证URL参数
-        # 预编译正则表达式，提高性能
+    if not url:
-        self.pattern_icon = re.compile(r'(icon|shortcut icon|alternate icon|apple-touch-icon)+', re.I)
+        return {"message": "请提供url参数"}
-        self.pattern_link = re.compile(r'(<link[^>]+rel=.(icon|shortcut icon|alternate icon|apple-touch-icon)[^>]+>)',
-                                       re.I)
-
-        # 计算默认图标的MD5值
-        self.default_icon_md5 = self._initialize_default_icon_md5()
-
-    def _initialize_default_icon_md5(self) -> List[str]:
-        """初始化默认图标MD5值列表"""
-        md5_list = [self._get_file_md5(setting.default_icon_path),
-                    '05231fb6b69aff47c3f35efe09c11ba0',
-                    '3ca64f83fdcf25135d87e08af65e68c9',
-                    'db470fd0b65c8c121477343c37f74f02',
-                    '52419f3f4f7d11945d272facc76c9e6a',
-                    'b8a0bf372c762e966cc99ede8682bc71',
-                    '71e9c45f29eadfa2ec5495302c22bcf6',
-                    'ababc687adac587b8a06e580ee79aaa1',
-                    '43802bddf65eeaab643adb8265bfbada']
-        # 过滤掉None值
-        return [md5 for md5 in md5_list if md5]
-
-    @staticmethod
-    def _get_file_md5(file_path: str) -> Optional[str]:
-        """计算文件的MD5值"""
-        try:
-            md5 = hashlib.md5()
-            with open(file_path, 'rb') as f:
-                while True:
-                    buffer = f.read(1024 * 8)
-                    if not buffer:
-                        break
-                    md5.update(buffer)
-            return md5.hexdigest().lower()
-        except Exception as e:
-            logger.error(f"计算文件MD5失败 {file_path}: {e}")
-            return None
-
-    def _is_default_icon_md5(self, icon_md5: str) -> bool:
-        """检查图标MD5是否为默认图标"""
-        return icon_md5 in self.default_icon_md5
-
-    def _is_default_icon_file(self, file_path: str) -> bool:
-        """检查文件是否为默认图标"""
-        if os.path.exists(file_path) and os.path.isfile(file_path):
-            md5 = self._get_file_md5(file_path)
-            return md5 in self.default_icon_md5 if md5 else False
-        return False
-
-    def _is_default_icon_byte(self, file_content: bytes) -> bool:
-        """检查字节内容是否为默认图标"""
-        try:
-            md5 = hashlib.md5(file_content).hexdigest().lower()
-            return md5 in self.default_icon_md5
-        except Exception as e:
-            logger.error(f"计算字节内容MD5失败: {e}")
-            return False
-
-    def _get_cache_file(self, domain: str, refresh: bool = False) -> Tuple[Optional[bytes], Optional[bytes]]:
-        """从缓存中获取图标文件"""
-        cache_path = os.path.join(setting.icon_root_path, 'data', 'icon', domain + '.png')
-        if os.path.exists(cache_path) and os.path.isfile(cache_path) and os.path.getsize(cache_path) > 0:
-            try:
-                cached_icon = FileUtil.read_file(cache_path, mode='rb')
-                file_time = int(os.path.getmtime(cache_path))
-
-                # 验证是否为有效的图片文件
-                if not helpers.is_image(cached_icon):
-                    logger.warning(f"缓存的图标不是有效图片: {cache_path}")
-                    return None, None
-
-                # 处理刷新请求或缓存过期情况
-                if refresh:
-                    if int(time.time()) - file_time <= setting.time_of_12_hours:
-                        logger.info(f"缓存文件修改时间在有效期内，不执行刷新: {cache_path}")
-                        return cached_icon, cached_icon
-                    return cached_icon, None
-
-                # 检查缓存是否过期（最大30天）
-                if int(time.time()) - file_time > setting.time_of_30_days:
-                    logger.info(f"图标缓存过期(>30天): {cache_path}")
-                    return cached_icon, None
-
-                # 默认图标，使用随机的缓存时间
-                if int(time.time()) - file_time > setting.time_of_1_days * random.randint(1, 7) and self._is_default_icon_file(cache_path):
-                    logger.info(f"默认图标缓存过期: {cache_path}")
-                    return cached_icon, None
-
-                return cached_icon, cached_icon
-            except Exception as e:
-                logger.error(f"读取缓存文件失败 {cache_path}: {e}")
-                return None, None
-        return None, None
-
-    def _get_cache_icon(self, domain_md5: str, refresh: bool = False) -> Tuple[Optional[bytes], Optional[bytes]]:
-        """获取缓存的图标"""
-        _cached, cached_icon = self._get_cache_file(domain_md5, refresh)
-
-        # 替换默认图标
-        if _cached and self._is_default_icon_byte(_cached):
-            _cached = setting.default_icon_file
-        if cached_icon and self._is_default_icon_byte(cached_icon):
-            cached_icon = setting.default_icon_file
-
-        return _cached, cached_icon
-
-    def _get_header(self, content_type: str, cache_time: int = None) -> dict:
-        """生成响应头"""
-        if cache_time is None:
-            cache_time = setting.time_of_7_days
-
-        _ct = 'image/x-icon'
-        if content_type and content_type in header.image_type:
-            _ct = content_type
-
-        cache_control = 'no-store, no-cache, must-revalidate, max-age=0' if cache_time == 0 else f'public, max-age={cache_time}'
-
-        return {
-            'Content-Type': _ct,
-            'Cache-Control': cache_control,
-            'X-Robots-Tag': 'noindex, nofollow'
-        }
-
-    def _parse_html(self, content: bytes, entity: Favicon) -> Optional[str]:
-        """从HTML内容中解析图标URL"""
-        if not content:
-            return None
 
     try:
-            # 尝试将bytes转换为字符串
+        entity = Favicon(url)
-            # str(content).encode('utf-8', 'replace').decode('utf-8', 'replace')
-            content_str = content.decode('utf-8', 'replace')
 
-            # 使用更高效的解析器
+        # 验证域名
-            bs = bs4.BeautifulSoup(content_str, features='lxml', parse_only=SoupStrainer("link"))
+        if not entity.domain:
-            if len(bs) == 0:
+            logger.warning(f"无效的URL: {url}")
-                bs = bs4.BeautifulSoup(content_str, features='html.parser', parse_only=SoupStrainer("link"))
+            return get_default(setting.time_of_1_days)
 
-            html_links = bs.find_all("link", rel=self.pattern_icon)
+        # 检查内存缓存中的失败URL
-
+        if entity.domain in favicon.failed_urls:
-            # 如果没有找到，尝试使用正则表达式直接匹配
+            if int(time.time()) <= favicon.failed_urls.get(entity.domain):
-            if not html_links or len(html_links) == 0:
+                return get_default(setting.time_of_1_days)
-                content_links = self.pattern_link.findall(content_str)
-                c_link = ''.join([_links[0] for _links in content_links])
-                bs = bs4.BeautifulSoup(c_link, features='lxml')
-                html_links = bs.find_all("link", rel=self.pattern_icon)
-
-            if html_links and len(html_links) > 0:
-                # 优先查找指定rel类型的图标
-                icon_url = (self._get_link_rel(html_links, entity, 'shortcut icon') or
-                            self._get_link_rel(html_links, entity, 'icon') or
-                            self._get_link_rel(html_links, entity, 'alternate icon') or
-                            self._get_link_rel(html_links, entity, ''))
-
-                if icon_url:
-                    logger.debug(f"-> 从HTML获取图标URL: {icon_url}")
-
-                return icon_url
-        except Exception as e:
-            logger.error(f"解析HTML失败: {e}")
-
-        return None
-
-    @staticmethod
-    def _get_link_rel(links, entity: Favicon, _rel: str) -> Optional[str]:
-        """从链接列表中查找指定rel类型的图标URL"""
-        if not links:
-            return None
-
-        for link in links:
-            r = link.get('rel')
-            _r = ' '.join(r) if isinstance(r, list) else r
-            _href = link.get('href')
-
-            if _rel:
-                if _r.lower() == _rel:
-                    return entity.get_icon_url(str(_href))
             else:
-                return entity.get_icon_url(str(_href))
+                del favicon.failed_urls[entity.domain]
 
-        return None
+        # 检查缓存
+        _cached, cached_icon = _get_cache_icon(entity.domain_md5, refresh=refresh in ['true', '1'])
 
-    def get_icon_sync(self, entity: Favicon, _cached: bytes = None) -> Optional[bytes]:
+        if _cached or cached_icon:
+            # 使用缓存图标
+            icon_content = cached_icon if cached_icon else _cached
+
+            # 确定内容类型和缓存时间
+            content_type = filetype.guess_mime(icon_content) if icon_content else ""
+            cache_time = setting.time_of_12_hours \
+                if _is_default_icon_byte(icon_content) else setting.time_of_7_days
+
+            # 乐观缓存机制：检查缓存是否已过期但仍有缓存内容
+            # _cached 存在但 cached_icon 为 None 表示缓存已过期
+            if _cached and not cached_icon:
+                # 缓存已过期，后台刷新缓存
+                logger.info(f"缓存已过期，加入后台队列刷新: {entity.domain}")
+                bg_tasks.add_task(get_icon_sync, entity, _cached)
+
+            return Response(content=icon_content,
+                            media_type=content_type if content_type else "image/x-icon",
+                            headers=_get_header(content_type, cache_time))
+        else:
+            # 没有缓存，实时处理
+            icon_content = get_icon_sync(entity, _cached)
+
+            if not icon_content:
+                # 获取失败，返回默认图标
+                return get_default()
+
+            # 确定内容类型和缓存时间
+            content_type = filetype.guess_mime(icon_content) if icon_content else ""
+            cache_time = setting.time_of_12_hours \
+                if _is_default_icon_byte(icon_content) else setting.time_of_7_days
+
+            return Response(content=icon_content,
+                            media_type=content_type if content_type else "image/x-icon",
+                            headers=_get_header(content_type, cache_time))
+    except Exception as e:
+        logger.error(f"处理图标请求时发生错误 {url}: {e}")
+        # 返回默认图标
+        return get_default()
+
+
+def get_icon_sync(entity: Favicon, _cached: bytes = None) -> Optional[bytes]:
     """同步获取图标"""
     icon_content = None
 
@@ -225,7 +108,7 @@ class FaviconService:
         # 尝试从网站获取HTML内容
         html_content = entity.req_get()
         if html_content:
-                icon_url = self._parse_html(html_content, entity)
+            icon_url = _parse_html(html_content, entity)
         else:
             icon_url = None
 
@@ -255,8 +138,8 @@ class FaviconService:
                 icon_content, icon_type = entity.get_icon_file(strategy_url, strategy_url == '')
 
         # 图标获取失败，或图标不是支持的图片格式，写入默认图标
-            if (not icon_content) or (not helpers.is_image(icon_content) or self._is_default_icon_byte(icon_content)):
+        if (not icon_content) or (not helpers.is_image(icon_content) or _is_default_icon_byte(icon_content)):
-                logger.warning(f"-> 获取图标失败，使用默认图标: {entity.domain}")
+            logger.debug(f"-> 获取图标失败，使用默认图标: {entity.domain}")
             icon_content = _cached if _cached else setting.default_icon_file
 
         if icon_content:
@@ -279,79 +162,195 @@ class FaviconService:
         logger.error(f"获取图标时发生错误 {entity.domain}: {e}")
         return _cached or setting.default_icon_file
 
-    def get_favicon_handler(
-            self,
-            request: Request,
-            bg_tasks: BackgroundTasks,
-            url: Optional[str] = None,
-            refresh: Optional[str] = None,
-            # sync: Optional[str] = None
-    ) -> dict[str, str] | Response:
-        """处理获取图标的请求"""
 
-        # 验证URL参数
+# 预编译正则表达式，提高性能
-        if not url:
+pattern_icon = re.compile(r'(icon|shortcut icon|alternate icon|apple-touch-icon)+', re.I)
-            return {"message": "请提供url参数"}
+pattern_link = re.compile(r'(<link[^>]+rel=.(icon|shortcut icon|alternate icon|apple-touch-icon)[^>]+>)', re.I)
+
+
+def _get_link_rel(links, entity: Favicon, _rel: str) -> Optional[str]:
+    """从链接列表中查找指定rel类型的图标URL"""
+    if not links:
+        return None
+
+    for link in links:
+        r = link.get('rel')
+        _r = ' '.join(r) if isinstance(r, list) else r
+        _href = link.get('href')
+
+        if _rel:
+            if _r.lower() == _rel:
+                return entity.get_icon_url(str(_href))
+        else:
+            return entity.get_icon_url(str(_href))
+
+    return None
+
+
+def _parse_html(content: bytes, entity: Favicon) -> Optional[str]:
+    """从HTML内容中解析图标URL"""
+    if not content:
+        return None
 
     try:
-            entity = Favicon(url)
+        # 尝试将bytes转换为字符串
+        content_str = str(content).encode('utf-8', 'replace').decode('utf-8', 'replace')
 
-            # 验证域名
+        # 使用更高效的解析器
-            if not entity.domain:
+        bs = bs4.BeautifulSoup(content_str, features='lxml', parse_only=SoupStrainer("link"))
-                logger.warning(f"无效的URL: {url}")
+        if len(bs) == 0:
-                return self.get_default(setting.time_of_7_days)
+            bs = bs4.BeautifulSoup(content_str, features='html.parser', parse_only=SoupStrainer("link"))
 
-            # 检查内存缓存中的失败URL
+        html_links = bs.find_all("link", rel=pattern_icon)
-            if entity.domain in favicon.failed_urls:
-                if int(time.time()) <= favicon.failed_urls.get(entity.domain):
-                    return self.get_default(setting.time_of_7_days)
-                else:
-                    del favicon.failed_urls[entity.domain]
 
-            # 检查缓存
+        # 如果没有找到，尝试使用正则表达式直接匹配
-            _cached, cached_icon = self._get_cache_icon(entity.domain_md5, refresh=refresh in ['true', '1'])
+        if not html_links or len(html_links) == 0:
+            content_links = pattern_link.findall(content_str)
+            c_link = ''.join([_links[0] for _links in content_links])
+            bs = bs4.BeautifulSoup(c_link, features='lxml')
+            html_links = bs.find_all("link", rel=pattern_icon)
 
-            if _cached or cached_icon:
+        if html_links and len(html_links) > 0:
-                # 使用缓存图标
+            # 优先查找指定rel类型的图标
-                icon_content = cached_icon if cached_icon else _cached
+            icon_url = (_get_link_rel(html_links, entity, 'shortcut icon') or
+                        _get_link_rel(html_links, entity, 'icon') or
+                        _get_link_rel(html_links, entity, 'alternate icon') or
+                        _get_link_rel(html_links, entity, ''))
 
-                # 确定内容类型和缓存时间
+            if icon_url:
-                content_type = filetype.guess_mime(icon_content) if icon_content else ""
+                logger.debug(f"-> 从HTML获取图标URL: {icon_url}")
-                cache_time = setting.time_of_12_hours if self._is_default_icon_byte(icon_content) else setting.time_of_7_days
 
-                # 乐观缓存机制：检查缓存是否已过期但仍有缓存内容
+            return icon_url
-                # _cached 存在但 cached_icon 为 None 表示缓存已过期
-                if _cached and not cached_icon:
-                    # 缓存已过期，后台刷新缓存
-                    logger.info(f"缓存已过期，加入后台队列刷新: {entity.domain}")
-                    bg_tasks.add_task(self.get_icon_sync, entity, _cached)
-
-                return Response(content=icon_content,
-                                media_type=content_type if content_type else "image/x-icon",
-                                headers=self._get_header(content_type, cache_time))
-            else:
-                # 没有缓存，实时处理
-                icon_content = self.get_icon_sync(entity, _cached)
-
-                if not icon_content:
-                    # 获取失败，返回默认图标
-                    return self.get_default()
-
-                # 确定内容类型和缓存时间
-                content_type = filetype.guess_mime(icon_content) if icon_content else ""
-                cache_time = setting.time_of_12_hours if self._is_default_icon_byte(icon_content) else setting.time_of_7_days
-
-                return Response(content=icon_content,
-                                media_type=content_type if content_type else "image/x-icon",
-                                headers=self._get_header(content_type, cache_time))
     except Exception as e:
-            logger.error(f"处理图标请求时发生错误 {url}: {e}")
+        logger.error(f"解析HTML失败: {e}")
-            # 返回默认图标
-            return self.get_default()
 
-    def get_default(self, cache_time: int = None) -> Response:
+    return None
+
+
+def _get_file_md5(file_path: str) -> Optional[str]:
+    """计算文件的MD5值"""
+    try:
+        md5 = hashlib.md5()
+        with open(file_path, 'rb') as f:
+            while True:
+                buffer = f.read(1024 * 8)
+                if not buffer:
+                    break
+                md5.update(buffer)
+        return md5.hexdigest().lower()
+    except Exception as e:
+        logger.error(f"计算文件MD5失败 {file_path}: {e}")
+        return None
+
+
+default_icon_md5 = [
+    _get_file_md5(setting.default_icon_path),
+    '05231fb6b69aff47c3f35efe09c11ba0',
+    '3ca64f83fdcf25135d87e08af65e68c9',
+    'db470fd0b65c8c121477343c37f74f02',
+    '52419f3f4f7d11945d272facc76c9e6a',
+    'b8a0bf372c762e966cc99ede8682bc71',
+    '71e9c45f29eadfa2ec5495302c22bcf6',
+    'ababc687adac587b8a06e580ee79aaa1',
+    '43802bddf65eeaab643adb8265bfbada',
+]
+
+
+def _get_header(content_type: str, cache_time: int = None) -> dict:
+    """生成响应头"""
+    if cache_time is None:
+        cache_time = setting.time_of_7_days
+
+    _ct = 'image/x-icon'
+    if content_type and content_type in header.image_type:
+        _ct = content_type
+
+    cache_control = 'no-store, no-cache, must-revalidate, max-age=0' if cache_time == 0 else f'public, max-age={cache_time}'
+
+    return {
+        'Content-Type': _ct,
+        'Cache-Control': cache_control,
+        'X-Robots-Tag': 'noindex, nofollow'
+    }
+
+
+def get_default(cache_time: int = None) -> Response:
     if cache_time is None:
         cache_time = setting.time_of_1_days
     return Response(content=setting.default_icon_file,
                     media_type="image/png",
-                        headers=self._get_header("image/png", cache_time))
+                    headers=_get_header("image/png", cache_time))
+
+
+def _is_default_icon_md5(icon_md5: str) -> bool:
+    """检查图标MD5是否为默认图标"""
+    return icon_md5 in default_icon_md5
+
+
+def _is_default_icon_file(file_path: str) -> bool:
+    """检查文件是否为默认图标"""
+    if os.path.exists(file_path) and os.path.isfile(file_path):
+        md5 = _get_file_md5(file_path)
+        return md5 in default_icon_md5 if md5 else False
+    return False
+
+
+def _is_default_icon_byte(file_content: bytes) -> bool:
+    """检查字节内容是否为默认图标"""
+    try:
+        md5 = hashlib.md5(file_content).hexdigest().lower()
+        return md5 in default_icon_md5
+    except Exception as e:
+        logger.error(f"计算字节内容MD5失败: {e}")
+        return False
+
+
+def _get_cache_file(domain: str, refresh: bool = False) -> Tuple[Optional[bytes], Optional[bytes]]:
+    """从缓存中获取图标文件"""
+    cache_path = os.path.join(setting.icon_root_path, 'data', 'icon', domain + '.png')
+    if os.path.exists(cache_path) and os.path.isfile(cache_path) and os.path.getsize(cache_path) > 0:
+        try:
+            cached_icon = FileUtil.read_file(cache_path, mode='rb')
+            file_time = int(os.path.getmtime(cache_path))
+
+            # 验证是否为有效的图片文件
+            if not helpers.is_image(cached_icon):
+                logger.warning(f"缓存的图标不是有效图片: {cache_path}")
+                return None, None
+
+            # 处理刷新请求或缓存过期情况
+            if refresh:
+                if int(time.time()) - file_time <= setting.time_of_12_hours:
+                    logger.info(f"缓存文件修改时间在有效期内，不执行刷新: {cache_path}")
+                    return cached_icon, cached_icon
+                return cached_icon, None
+
+            # 检查缓存是否过期（最大30天）
+            if int(time.time()) - file_time > setting.time_of_30_days:
+                logger.info(f"图标缓存过期(>30天): {cache_path}")
+                return cached_icon, None
+
+            # 默认图标，使用随机的缓存时间
+            if (int(time.time()) - file_time > setting.time_of_1_days * random.randint(1, 7)
+                    and _is_default_icon_file(cache_path)):
+                logger.info(f"默认图标缓存过期: {cache_path}")
+                return cached_icon, None
+
+            return cached_icon, cached_icon
+        except Exception as e:
+            logger.error(f"读取缓存文件失败 {cache_path}: {e}")
+            return None, None
+    return None, None
+
+
+def _get_cache_icon(domain_md5: str, refresh: bool = False) -> Tuple[Optional[bytes], Optional[bytes]]:
+    """获取缓存的图标"""
+    _cached, cached_icon = _get_cache_file(domain_md5, refresh)
+
+    # 替换默认图标
+    if _cached and _is_default_icon_byte(_cached):
+        _cached = setting.default_icon_file
+    if cached_icon and _is_default_icon_byte(cached_icon):
+        cached_icon = setting.default_icon_file
+
+    return _cached, cached_icon

favicon_app/utils/header.py

@@ -6,7 +6,6 @@ import threading
 from typing import Dict, Optional
 
 # 配置日志
-logging.basicConfig(level=logging.INFO)
 logger = logging.getLogger(__name__)
 
 

run.py

@@ -7,7 +7,7 @@ if __name__ == "__main__":
         "main:app",
         host="127.0.0.1",
         port=8000,
-        reload=True,
+        reload=False,
         log_level="info",
     )
     server = uvicorn.Server(config)