Fix: Handle 'user_agent' data truncation error

app/database/email_verification.py

@@ -35,7 +35,7 @@ class LoginSession(SQLModel, table=True):
     user_id: int = Field(sa_column=Column(BigInteger, ForeignKey("lazer_users.id"), nullable=False, index=True))
     session_token: str = Field(unique=True, index=True)  # 会话令牌
     ip_address: str = Field()  # 登录IP
-    user_agent: str | None = Field(default=None)
+    user_agent: str | None = Field(default=None, max_length=250)
     country_code: str | None = Field(default=None)
     is_verified: bool = Field(default=False)  # 是否已验证
     created_at: datetime = Field(default_factory=lambda: datetime.now(UTC))

app/service/email_verification_service.py

@@ -388,13 +388,18 @@ class LoginSessionService:
         is_new_location: bool = False
     ) -> LoginSession:
         """创建登录会话"""
+        from app.utils import simplify_user_agent
+        
         session_token = EmailVerificationService.generate_session_token()
         
+        # 简化 User-Agent 字符串
+        simplified_user_agent = simplify_user_agent(user_agent, max_length=250)
+        
         session = LoginSession(
             user_id=user_id,
             session_token=session_token,
             ip_address=ip_address,
-            user_agent=user_agent,
+            user_agent=simplified_user_agent,
             country_code=country_code,
             is_new_location=is_new_location,
             expires_at=datetime.now(UTC) + timedelta(hours=24),  # 24小时过期

app/service/login_log_service.py

@@ -45,8 +45,10 @@ class LoginLogService:
         raw_ip = get_client_ip(request)
         ip_address = normalize_ip(raw_ip)
 
-        # 获取User-Agent
+        # 获取并简化User-Agent
-        user_agent = request.headers.get("User-Agent", "")
+        from app.utils import simplify_user_agent
+        raw_user_agent = request.headers.get("User-Agent", "")
+        user_agent = simplify_user_agent(raw_user_agent, max_length=500)
 
         # 创建基本的登录记录
         login_log = UserLoginLog(

app/utils.py

@@ -146,3 +146,80 @@ def check_image(content: bytes, size: int, width: int, height: int) -> None:
                 )
     except Exception as e:
         raise HTTPException(status_code=400, detail=f"Error processing image: {e}")
+
+
+def simplify_user_agent(user_agent: str | None, max_length: int = 200) -> str | None:
+    """
+    简化 User-Agent 字符串，只保留 osu! 和关键设备系统信息浏览器
+    
+    Args:
+        user_agent: 原始 User-Agent 字符串
+        max_length: 最大长度限制
+        
+    Returns:
+        简化后的 User-Agent 字符串，或 None
+    """
+    import re
+    
+    if not user_agent:
+        return None
+        
+    # 如果长度在限制内，直接返回
+    if len(user_agent) <= max_length:
+        return user_agent
+    
+    # 提取操作系统信息
+    os_info = ""
+    os_patterns = [
+        r'(Windows[^;)]*)',
+        r'(Mac OS[^;)]*)',
+        r'(Linux[^;)]*)',
+        r'(Android[^;)]*)',
+        r'(iOS[^;)]*)',
+        r'(iPhone[^;)]*)',
+        r'(iPad[^;)]*)'
+    ]
+    
+    for pattern in os_patterns:
+        match = re.search(pattern, user_agent, re.IGNORECASE)
+        if match:
+            os_info = match.group(1).strip()
+            break
+    
+    # 提取浏览器信息
+    browser_info = ""
+    browser_patterns = [
+        r'(osu![^)]*)',  # osu! 客户端
+        r'(Chrome/[\d.]+)',
+        r'(Firefox/[\d.]+)',
+        r'(Safari/[\d.]+)',
+        r'(Edge/[\d.]+)',
+        r'(Opera/[\d.]+)'
+    ]
+    
+    for pattern in browser_patterns:
+        match = re.search(pattern, user_agent, re.IGNORECASE)
+        if match:
+            browser_info = match.group(1).strip()
+            # 如果找到了 osu! 客户端，优先使用
+            if 'osu!' in browser_info.lower():
+                break
+    
+    # 构建简化的 User-Agent
+    parts = []
+    if os_info:
+        parts.append(os_info)
+    if browser_info:
+        parts.append(browser_info)
+    
+    if parts:
+        simplified = '; '.join(parts)
+    else:
+        # 如果没有识别到关键信息，截断原始字符串
+        simplified = user_agent[:max_length-3] + "..."
+    
+    # 确保不超过最大长度
+    if len(simplified) > max_length:
+        simplified = simplified[:max_length-3] + "..."
+    
+    return simplified

migrations/versions/5b76689f6e4b_increase_the_length_limit_of_the_user_.py

@@ -0,0 +1,40 @@
+"""Increase the length limit of the user_agent field in the login_sessions table
+
+Revision ID: 5b76689f6e4b
+Revises: 65e7dc8d5905
+Create Date: 2025-08-22 15:14:59.242274
+
+"""
+from __future__ import annotations
+
+from collections.abc import Sequence
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import mysql
+
+# revision identifiers, used by Alembic.
+revision: str = "5b76689f6e4b"
+down_revision: str | Sequence[str] | None = "65e7dc8d5905"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.alter_column("login_sessions", "user_agent",
+               existing_type=mysql.VARCHAR(length=255),
+               type_=sa.String(length=250),
+               existing_nullable=True)
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.alter_column("login_sessions", "user_agent",
+               existing_type=sa.String(length=250),
+               type_=mysql.VARCHAR(length=255),
+               existing_nullable=True)
+    # ### end Alembic commands ###