basic structure for lazy config loading

src/delta_barth/config.py

@@ -0,0 +1,43 @@
+from __future__ import annotations
+
+from pathlib import Path
+
+import dopt_basics.configs
+from pydantic import BaseModel
+
+
+class Config(BaseModel):
+    forecast: CfgForecast
+
+
+class CfgForecast(BaseModel):
+    threshold_month_data_points: int
+
+
+class LazyCfgLoader:
+    def __init__(
+        self,
+        cfg_path: Path,
+    ) -> None:
+        cfg_path = cfg_path.resolve()
+        assert cfg_path.exists(), f"config path {cfg_path} seems not to exist"
+        assert cfg_path.is_file(), f"config path {cfg_path} seems not to be a file"
+        self._path = cfg_path
+        self._cfg: Config | None = None
+
+    @property
+    def path(self) -> Path:
+        return self._path
+
+    def _load(self) -> Config:
+        cfg = dopt_basics.configs.load_toml(self.path)
+
+        return Config(**cfg)
+
+    def reload(self) -> None:
+        self._cfg = self._load()
+
+    def get(self) -> Config:
+        if self._cfg is None:
+            self._cfg = self._load()
+        return self._cfg

src/delta_barth/dopt-cfg.toml

@@ -0,0 +1,2 @@
+[forecast]
+threshold_month_data_points = 28

src/delta_barth/logging.py

@@ -31,6 +31,8 @@ logger_status = logging.getLogger("delta_barth.status")
 logger_status.setLevel(logging.DEBUG)
 logger_session = logging.getLogger("delta_barth.session")
 logger_session.setLevel(logging.DEBUG)
+logger_config = logging.getLogger("delta_barth.config")
+logger_config.setLevel(logging.DEBUG)
 logger_management = logging.getLogger("delta_barth.management")
 logger_management.setLevel(logging.DEBUG)
 logger_wrapped_results = logging.getLogger("delta_barth.wrapped_results")