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139 lines
3.7 KiB
Python
139 lines
3.7 KiB
Python
"""
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JWT 处理器委托层
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此模块作为 Domain 层 (packages.domain.auth.jwt_service) 和 Application 层之间的委托层,
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隔离 Domain 层对 jwt 库的直接依赖。
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使用方式:
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from packages.application.auth.jwt_handler import JWTHandler, get_jwt_handler
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jwt_handler = JWTHandler(secret_key="<YOUR_SECRET_KEY>")
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token = jwt_handler.create_access_token(user_id="user123", role="admin")
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payload = jwt_handler.verify_access_token(token)
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"""
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from datetime import datetime, timedelta
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from typing import Any, Dict, Optional
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from packages.application.auth.jwt_service import JWTConfig, JWTService, TokenType
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class JWTHandler:
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"""
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JWT 处理器委托类
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委托给 packages.domain.auth.jwt_service.JWTService 进行实际的 JWT 操作,
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此层仅负责配置和封装,不直接依赖 jwt 库。
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"""
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def __init__(self, secret_key: str, algorithm: str = "HS256", access_token_expire_minutes: int = 30):
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"""
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初始化 JWT 处理器
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Args:
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secret_key: JWT 签名密钥(必须从环境变量或配置注入)
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algorithm: 加密算法,默认 HS256
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access_token_expire_minutes: Access Token 过期时间(分钟)
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"""
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config = JWTConfig(
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secret_key=secret_key,
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algorithm=algorithm,
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access_token_expire_minutes=access_token_expire_minutes,
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)
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self._service = JWTService(config)
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def create_access_token(
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self,
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user_id: str,
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role: str = "",
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additional_claims: Optional[Dict[str, Any]] = None,
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) -> str:
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"""
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创建 access_token
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Args:
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user_id: 用户 ID
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role: 用户角色
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additional_claims: 额外的声明信息
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Returns:
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JWT Token 字符串
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"""
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return self._service.create_access_token(
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user_id=user_id,
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role=role,
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additional_claims=additional_claims,
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)
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def verify_access_token(self, token: str) -> Dict[str, Any]:
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"""
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验证 access_token
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Args:
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token: JWT Token 字符串
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Returns:
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Token payload
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Raises:
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ExpiredSignatureError: Token 已过期
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ValueError: Token 类型不是 access
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"""
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return self._service.verify_access_token(token)
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def verify_token(self, token: str) -> Dict[str, Any]:
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"""
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验证任意 Token
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Args:
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token: JWT Token 字符串
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Returns:
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Token payload
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"""
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return self._service.verify_token(token)
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# 默认处理器实例(需要通过 configure_jwt_handler 配置)
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_default_handler: Optional[JWTHandler] = None
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def configure_jwt_handler(
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secret_key: str,
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algorithm: str = "HS256",
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access_token_expire_minutes: int = 30,
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) -> JWTHandler:
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"""
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配置全局 JWT 处理器
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Args:
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secret_key: JWT 签名密钥
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algorithm: 加密算法
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access_token_expire_minutes: Access Token 过期时间(分钟)
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Returns:
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配置好的 JWTHandler 实例
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"""
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global _default_handler
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_default_handler = JWTHandler(
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secret_key=secret_key,
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algorithm=algorithm,
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access_token_expire_minutes=access_token_expire_minutes,
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)
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return _default_handler
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def get_jwt_handler() -> JWTHandler:
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"""
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获取全局 JWT 处理器
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Returns:
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JWTHandler 实例
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Raises:
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RuntimeError: 如果尚未配置 JWT 处理器
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"""
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if _default_handler is None:
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raise RuntimeError("JWT handler not configured. Call configure_jwt_handler() first.")
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return _default_handler
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