congsh
189 lines
6.9 KiB
Python
189 lines
6.9 KiB
Python
"""运行时配置管理：支持环境变量作为默认值，数据库覆盖"""
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import logging
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from datetime import datetime, timezone
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from pathlib import Path
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from typing import Any, Dict, List, Optional
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from sqlalchemy.orm import Session
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from config import settings
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from models import AppSetting
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logger = logging.getLogger(__name__)
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# 可在 Web UI 中编辑的配置项清单
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EDITABLE_SETTINGS = {
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"RSSKEEPER_BASE_URL": {"description": "rssKeeper 服务地址", "sensitive": False},
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"OPENAI_API_KEY": {"description": "LLM API Key", "sensitive": True},
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"OPENAI_BASE_URL": {"description": "LLM API 基础地址", "sensitive": False},
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"OPENAI_MODEL": {"description": "LLM 模型名", "sensitive": False},
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"OPENAI_TIMEOUT": {"description": "LLM 调用超时（秒）", "sensitive": False},
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"OPENAI_MAX_RETRIES": {"description": "LLM 调用最大重试次数", "sensitive": False},
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"SUMMARIZE_INTERVAL_MINUTES": {"description": "摘要任务间隔（分钟）", "sensitive": False},
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"TAG_SCORE_INTERVAL_MINUTES": {"description": "分类/打分/去重任务间隔（分钟）", "sensitive": False},
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"DAILY_BRIEF_HOUR": {"description": "每日简报生成小时", "sensitive": False},
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"DAILY_BRIEF_MINUTE": {"description": "每日简报生成分钟", "sensitive": False},
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"TITLE_SIMILARITY_THRESHOLD": {"description": "标题相似度阈值", "sensitive": False},
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"CONTENT_SIMILARITY_THRESHOLD": {"description": "内容相似度阈值", "sensitive": False},
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"MAX_AI_SUMMARY_LENGTH": {"description": "AI 摘要最大长度", "sensitive": False},
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"MIN_ORIGINAL_SUMMARY_LENGTH": {"description": "原始摘要最小长度", "sensitive": False},
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"BRIEF_TOP_N_PER_CATEGORY": {"description": "简报每分类显示文章数", "sensitive": False},
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"LOG_LEVEL": {"description": "日志级别", "sensitive": False},
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"API_TOKEN": {"description": "API 鉴权 Token（为空时不启用鉴权）", "sensitive": True},
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"CORS_ALLOWED_ORIGINS": {"description": "CORS 允许来源（逗号分隔）", "sensitive": False},
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}
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def _get_env_default(key: str) -> str:
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"""从 Pydantic Settings 获取环境变量默认值"""
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value = getattr(settings, key, "")
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return str(value) if value is not None else ""
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def _mask_sensitive(value: str) -> str:
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"""对敏感值做部分脱敏"""
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if not value:
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return ""
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if len(value) <= 8:
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return "*" * len(value)
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return value[:4] + "..." + value[-4:]
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def init_default_settings(db: Session) -> None:
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"""若配置表为空，使用环境变量初始化默认配置"""
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existing_count = db.query(AppSetting).count()
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if existing_count > 0:
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return
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for key, meta in EDITABLE_SETTINGS.items():
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default_value = _get_env_default(key)
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db.add(
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AppSetting(
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key=key,
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value=default_value,
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description=meta["description"],
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is_sensitive=meta["sensitive"],
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)
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)
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db.commit()
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logger.info("已初始化默认配置项: %d 条", len(EDITABLE_SETTINGS))
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def get_setting(db: Session, key: str, default: Any = None) -> Any:
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"""从数据库读取配置，若不存在则返回环境变量默认值"""
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setting = db.query(AppSetting).filter(AppSetting.key == key).first()
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if setting:
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return setting.value
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return _get_env_default(key) if default is None else default
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def get_setting_value(key: str, default: Any = None) -> Any:
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"""不依赖 Session，直接创建临时会话读取"""
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from database import SessionLocal
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db = SessionLocal()
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try:
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return get_setting(db, key, default)
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finally:
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db.close()
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def set_setting(db: Session, key: str, value: str) -> bool:
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"""更新单个配置项"""
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if key not in EDITABLE_SETTINGS:
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return False
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setting = db.query(AppSetting).filter(AppSetting.key == key).first()
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if setting:
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setting.value = str(value)
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setting.updated_at = datetime.now(timezone.utc)
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else:
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meta = EDITABLE_SETTINGS[key]
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db.add(
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AppSetting(
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key=key,
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value=str(value),
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description=meta["description"],
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is_sensitive=meta["sensitive"],
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)
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)
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db.commit()
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logger.info("配置已更新: %s", key)
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return True
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def list_settings(db: Session, mask_sensitive: bool = True) -> List[Dict[str, Any]]:
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"""列出所有可编辑配置"""
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db_settings = {s.key: s for s in db.query(AppSetting).all()}
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result = []
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for key, meta in EDITABLE_SETTINGS.items():
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setting = db_settings.get(key)
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value = setting.value if setting else _get_env_default(key)
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is_sensitive = meta["sensitive"]
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if is_sensitive and mask_sensitive:
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display_value = _mask_sensitive(value)
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is_masked = True
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else:
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display_value = value
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is_masked = False
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result.append({
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"key": key,
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"value": display_value,
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"real_value": value if not mask_sensitive else None,
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"description": meta["description"],
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"is_sensitive": is_sensitive,
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"is_masked": is_masked,
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"updated_at": setting.updated_at.isoformat() if setting else None,
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})
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return result
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def reset_settings(db: Session) -> None:
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"""将所有配置重置为环境变量默认值"""
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for key in EDITABLE_SETTINGS:
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set_setting(db, key, _get_env_default(key))
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logger.info("配置已重置为环境变量默认值")
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def apply_db_settings_to_config(db: Session = None) -> None:
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"""将数据库中的配置覆盖到全局 settings 对象，重启后生效"""
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close_db = False
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if db is None:
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from database import SessionLocal
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db = SessionLocal()
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close_db = True
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try:
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for key in EDITABLE_SETTINGS:
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db_value = get_setting(db, key)
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if db_value is None or db_value == "":
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continue
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field_info = settings.model_fields.get(key)
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if field_info is None:
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continue
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target_type = field_info.annotation
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try:
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if target_type is int:
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converted = int(db_value)
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elif target_type is float:
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converted = float(db_value)
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elif target_type is bool:
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converted = db_value.lower() in ("true", "1", "yes")
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elif target_type is Path:
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converted = Path(db_value)
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else:
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converted = db_value
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setattr(settings, key, converted)
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logger.debug("已应用配置: %s=%s", key, converted)
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except Exception as exc:
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logger.error("应用配置 %s=%s 失败: %s", key, db_value, exc)
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raise ValueError(f"配置项 {key} 的值无效: {db_value}") from exc
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finally:
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if close_db:
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db.close()
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