Dark模式 oss存储

core/backend/apps/ai/services.py

@@ -2991,7 +2991,7 @@ def notify_generation_failure(
 
 
 def _asset_preview_url(asset) -> str:
-    """资产主文件的可公开访问 URL(已写绝对 URL 优先,否则实时签 TOS GET)。"""
+    """资产主文件的公读直链。写进会话的地址不能带签名，否则 1 小时后图片会消失。"""
     if asset is None:
         return ""
     primary = asset.files.filter(is_primary=True).first() or asset.files.first()
@@ -2999,16 +2999,16 @@ def _asset_preview_url(asset) -> str:
         return ""
     if primary.preview_url:
         return primary.preview_url
+    if not primary.object_key:
+        return ""
     try:
-        return TosStorage().presigned_get_url(object_key=primary.object_key)
+        return TosStorage().public_url(object_key=primary.object_key, bucket=primary.bucket or None)
     except Exception:
         return ""
 
 
 def asset_stable_url(asset) -> tuple[str, str]:
-    """资产的「长期可打开」直链 (主文件, 封面图)。历史记录这类隔天还要点开的场景必须用这个:
-    预签名链只活 1 小时,存进 payload 快照的话第二天就播不了 —— 公读直链不过期还能被缓存。
-    顺序:落库 preview_url → TOS 公读直链 → 兜底预签名。"""
+    """资产的长期直链 (主文件, 封面图)。公读地址不过期，结果卡隔天还能打开。"""
     if asset is None:
         return "", ""
     files = list(asset.files.all())
@@ -3031,10 +3031,6 @@ def asset_stable_url(asset) -> tuple[str, str]:
             return ""
         try:
             return TosStorage().public_url(object_key=f.object_key, bucket=f.bucket or None)
-        except Exception:  # noqa: BLE001
-            pass
-        try:
-            return TosStorage().presigned_get_url(object_key=f.object_key)
         except Exception:  # noqa: BLE001
             return ""