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HeurAMS-legacy/src/heurams/context.py
2025-12-17 20:52:11 +08:00

59 lines
1.9 KiB
Python

"""
全局上下文管理模块
以及基准路径
"""
from contextvars import ContextVar
import pathlib
from heurams.services.config import ConfigFile
from heurams.services.logger import get_logger
# 默认配置文件路径规定: 以包目录为准
# 用户配置文件路径规定: 以运行目录为准
# 数据文件路径规定: 以运行目录为准
rootdir = pathlib.Path(__file__).parent
print(f"rootdir: {rootdir}")
logger = get_logger(__name__)
logger.debug(f"项目根目录: {rootdir}")
workdir = pathlib.Path.cwd()
print(f"workdir: {workdir}")
logger.debug(f"工作目录: {workdir}")
config_var: ContextVar[ConfigFile] = ContextVar(
"config_var", default=ConfigFile(rootdir / "default" / "config" / "config.toml")
)
try:
config_var: ContextVar[ConfigFile] = ContextVar(
"config_var", default=ConfigFile(workdir / "config" / "config.toml")
) # 配置文件
print("已加载自定义用户配置")
logger.info("已加载自定义用户配置, 路径: %s", workdir / "config" / "config.toml")
except Exception as e:
print("未能加载自定义用户配置")
logger.warning("未能加载自定义用户配置, 错误: %s", e)
# runtime_var: ContextVar = ContextVar('runtime_var', default=dict()) # 运行时共享数据
class ConfigContext:
"""
功能完备的上下文管理器
用于临时切换配置的作用域, 支持嵌套使用
Example:
>>> with ConfigContext(test_config):
... get_daystamp() # 使用 test_config
>>> get_daystamp() # 恢复原配置
"""
def __init__(self, config_provider: ConfigFile):
self.config_provider = config_provider
self._token = None
def __enter__(self):
self._token = config_var.set(self.config_provider)
return self
def __exit__(self, exc_type, exc_val, exc_tb):
config_var.reset(self._token) # type: ignore