Simon
6c2f198261
- config.yaml database.mysql：host/port/db/user/charset 明文可提交；密码经 password_env 引用 .env 的 MYSQL_PASSWORD（AGENT.md §33 密钥不进 git） - config.py _build_mysql_url：URL 优先级 DATABASE_URL env > database.mysql 段 > sqlite 兜底 - pyproject 引入 pymysql>=1.1 - tests/conftest.py 强制每进程 /tmp SQLite（测试绝不触 MySQL 开发库）；test_config 覆盖 mysql 组装/密码可选/sqlite 兜底分支 - scripts/migrate_sqlite_to_mysql.py：sqlite→mysql 一次性迁移工具（keyset 分页 + chunk 多值 INSERT + 攒批 commit + 幂等续传 + 低配 MySQL 节流 --throttle-sec + --verify-only 行数与抽样一致性校验）；已用于 data/quant.db 约 1605 万行迁移并经校验一致
183 lines
6.6 KiB
Python
183 lines
6.6 KiB
Python
"""核心配置层：加载根目录 config.yaml + .env，向全应用提供 Settings。
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加载优先级：环境变量 > 根目录 .env > 根目录 config.yaml > 代码默认值。
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密钥只存在于 .env（config.yaml 经 *_env 字段引用变量名）。
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"""
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from __future__ import annotations
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import os
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from dataclasses import dataclass
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from functools import lru_cache
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from pathlib import Path
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from urllib.parse import quote_plus
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import yaml
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# 项目根：<root>/backend/app/core/config.py → parents[3]
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PROJECT_ROOT = Path(__file__).resolve().parents[3]
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BACKEND_ROOT = PROJECT_ROOT / "backend"
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CONFIG_PATH = PROJECT_ROOT / "config.yaml"
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ENV_PATH = PROJECT_ROOT / ".env"
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_SQLITE_PREFIX = "sqlite:///"
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def _load_env_file(path: Path) -> None:
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"""把 .env 读入 os.environ（不覆盖已存在的环境变量）。"""
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if not path.exists():
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return
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for raw in path.read_text(encoding="utf-8").splitlines():
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line = raw.strip()
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if not line or line.startswith("#") or "=" not in line:
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continue
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key, _, value = line.partition("=")
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key = key.strip()
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if key and key not in os.environ:
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os.environ[key] = value.strip().strip("\"'")
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def _load_config_yaml(path: Path) -> dict:
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if not path.exists():
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return {}
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with path.open(encoding="utf-8") as fh:
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data = yaml.safe_load(fh)
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return data if isinstance(data, dict) else {}
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def _deep(cfg: dict, dotted: str) -> object:
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node: object = cfg
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for part in dotted.split("."):
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if not isinstance(node, dict) or part not in node:
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return None
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node = node[part]
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return node
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@dataclass(frozen=True)
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class Settings:
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"""应用全局配置（已解析、不可变）。"""
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app_name: str
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app_version: str
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debug: bool
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secret_key: str
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api_prefix: str
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database_url: str
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sqlalchemy_echo: bool
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migrations_dir: Path
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data_source_primary: str
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data_source_fallback: str
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tushare_token: str
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llm_api_key: str
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llm_base_url: str | None
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llm_model: str
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storage: dict[str, Path]
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job_mode: str
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job_memory_limit_gb: int
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job_max_concurrent: int
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config_path: Path = CONFIG_PATH
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env_path: Path = ENV_PATH
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project_root: Path = PROJECT_ROOT
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def _resolve_storage_dirs(cfg: dict) -> dict[str, Path]:
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storage_cfg = _deep(cfg, "storage") or {}
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return {
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key: PROJECT_ROOT / str(value)
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for key, value in storage_cfg.items()
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if isinstance(value, str)
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}
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def _normalize_sqlite_url(url: str) -> str:
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"""把相对路径的 sqlite URL 解析为项目根下的绝对路径。"""
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if not url.startswith(_SQLITE_PREFIX):
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return url
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rest = url[len(_SQLITE_PREFIX) :]
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if rest.startswith("/"): # 已是绝对路径（sqlite:////abs/path）
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return url
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return f"{_SQLITE_PREFIX}{(PROJECT_ROOT / rest).resolve()}"
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def _build_mysql_url(mysql: dict | None) -> str | None:
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"""由 config.yaml database.mysql 段组装 mysql+pymysql URL。
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规则：仅当 enabled 且 host/user/db 齐全时返回 URL；密码经 password_env
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指定的环境变量读取（AGENT.md §33 密钥只放 .env），未设置则按空密码处理。
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"""
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if not mysql or not mysql.get("enabled"):
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return None
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host = mysql.get("host")
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user = mysql.get("user")
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db = mysql.get("db")
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if not (host and user and db):
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return None
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port = mysql.get("port") or 3306
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charset = mysql.get("charset") or "utf8mb4"
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password = os.environ.get(mysql.get("password_env") or "MYSQL_PASSWORD", "")
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auth = f"{quote_plus(user)}:{quote_plus(password)}" if password else quote_plus(user)
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return f"mysql+pymysql://{auth}@{host}:{port}/{db}?charset={charset}"
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@lru_cache
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def get_settings() -> Settings:
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"""加载并缓存 Settings。config / env 路径可通过参数覆盖以便测试。"""
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_load_env_file(ENV_PATH)
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cfg = _load_config_yaml(CONFIG_PATH)
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secret_env = _deep(cfg, "app.secret_key_env") or "APP_SECRET_KEY"
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url_env = _deep(cfg, "database.url_env") or "DATABASE_URL"
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token_env = _deep(cfg, "data_source.tushare_token_env") or "TUSHARE_TOKEN"
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# Agent LLM：URL/模型名在 config.yaml 明文，api_key 只从 .env 读（env 可覆盖 url/model）
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agent_llm = _deep(cfg, "agent.llm") or {}
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llm_key_env = agent_llm.get("api_key_env") or "LLM_API_KEY"
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llm_url_env = agent_llm.get("base_url_env") or "LLM_BASE_URL"
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llm_model_env = agent_llm.get("model_env") or "LLM_MODEL"
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default_url = "sqlite:///./data/quant.db"
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# URL 优先级：环境变量(DATABASE_URL) > config.yaml database.mysql 段 > SQLite 兜底
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database_url = os.environ.get(url_env) or _build_mysql_url(
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_deep(cfg, "database.mysql") or {}
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) or default_url
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migrations_rel = _deep(cfg, "database.migrations_dir") or (
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"app/infrastructure/persistence/migrations"
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)
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# Job 执行：环境变量 JOB_MODE / QLIB_JOB_MEM_LIMIT_GB 可覆盖 config.yaml（测试用）
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job_cfg = _deep(cfg, "job") or {}
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try:
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job_memory_limit_gb = int(
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os.environ.get("QLIB_JOB_MEM_LIMIT_GB") or job_cfg.get("max_memory_gb") or 6
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)
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except (TypeError, ValueError):
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job_memory_limit_gb = 6
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try:
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job_max_concurrent = int(
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os.environ.get("QLIB_JOB_MAX_CONCURRENT") or job_cfg.get("max_concurrent_jobs") or 2
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)
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except (TypeError, ValueError):
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job_max_concurrent = 2
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return Settings(
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app_name=str(_deep(cfg, "app.name") or "qlib-platform"),
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app_version=str(_deep(cfg, "app.version") or "0.1.0"),
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debug=bool(_deep(cfg, "app.debug") or False),
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secret_key=os.environ.get(secret_env, "dev-insecure-key"),
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api_prefix=str(_deep(cfg, "api.prefix") or "/api"),
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database_url=_normalize_sqlite_url(database_url),
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sqlalchemy_echo=bool(_deep(cfg, "database.echo") or False),
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migrations_dir=BACKEND_ROOT / str(migrations_rel),
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data_source_primary=str(_deep(cfg, "data_source.primary") or "tushare"),
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data_source_fallback=str(_deep(cfg, "data_source.fallback") or "sina"),
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tushare_token=os.environ.get(token_env, ""),
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llm_api_key=os.environ.get(llm_key_env, ""),
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llm_base_url=os.environ.get(llm_url_env) or (agent_llm.get("base_url") or None),
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llm_model=os.environ.get(llm_model_env) or agent_llm.get("model") or "qwen-plus",
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storage=_resolve_storage_dirs(cfg),
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job_mode=os.environ.get("JOB_MODE") or job_cfg.get("mode") or "subprocess",
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job_memory_limit_gb=job_memory_limit_gb,
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job_max_concurrent=job_max_concurrent,
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)
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