infrasynth-backend-kit/infrasynth/workflows/__init__.py
jcv-dev 5df0be1f5c feat: uniform extensibility across every module
Close the remaining places where an extension point was hardcoded, and
expose a stable public import surface for every app.

- files: register_storage_backend(...) / STORAGE_BACKENDS[name]["CLASS"];
  unknown backends now fail loudly instead of silently using local
- files: PipelineStepRegistry + @pipeline_step; PIPELINE_EXECUTOR setting
- billing: INVOICE_PDF_BUILDER setting
- security: TWO_FACTOR_SERVICE / TWO_FACTOR_RECOVERY_SERVICE settings
- all app packages expose lazy public exports (PEP 562); infrasynth.shared
  re-exports its primitives eagerly
- README documents the per-module extension-point table
- tests/test_extensibility.py pins each hook plus the public surface
2026-09-24 11:08:08 -05:00

55 lines
1.7 KiB
Python

"""Public surface of ``infrasynth.workflows``.
The exports are resolved lazily (PEP 562) so importing this package never
triggers Django model imports before the app registry is ready. Import from
here::
from infrasynth.workflows import WorkflowEngine, DataValidatorRegistry, Workflow
"""
from __future__ import annotations
from importlib import import_module
from typing import Any
__all__ = [
"DataValidatorProtocol",
"DataValidatorRegistry",
"NodeAssignment",
"Transition",
"Workflow",
"WorkflowAwareModel",
"WorkflowEngine",
"WorkflowInstance",
"WorkflowNode",
"WorkflowObserver",
]
# public name -> module (relative to the ``infrasynth`` package) that defines it
_EXPORTS: dict[str, str] = {
"DataValidatorProtocol": "workflows.validators",
"DataValidatorRegistry": "workflows.validators",
"NodeAssignment": "workflows.models",
"Transition": "workflows.models",
"Workflow": "workflows.models",
"WorkflowAwareModel": "workflows.models",
"WorkflowEngine": "workflows.engine",
"WorkflowInstance": "workflows.models",
"WorkflowNode": "workflows.models",
"WorkflowObserver": "workflows.models",
}
def __getattr__(name: str) -> Any:
module_path = _EXPORTS.get(name)
if module_path is not None:
return getattr(import_module(f"infrasynth.{module_path}"), name)
# Let ``infrasynth.<app>.<submodule>`` resolve as usual.
try:
return import_module(f"{__name__}.{name}")
except ModuleNotFoundError as exc:
raise AttributeError(f"module {__name__!r} has no attribute {name!r}") from exc
def __dir__() -> list[str]:
return sorted(set(__all__) | set(globals()))