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| 1 | +"""Deprecated root-module import aliases (WDF-002).""" |
| 2 | + |
| 3 | +from __future__ import annotations |
| 4 | + |
| 5 | +import importlib |
| 6 | +import importlib.abc |
| 7 | +import importlib.util |
| 8 | +import sys |
| 9 | +from types import ModuleType |
| 10 | + |
| 11 | +_DEPRECATED_ALIASES: dict[str, str] = { |
| 12 | + 'teaagent.policy_engine': 'teaagent.governance.policy_engine', |
| 13 | + 'teaagent.rbac': 'teaagent.governance.rbac', |
| 14 | + 'teaagent.policy_routing': 'teaagent.governance.policy_routing', |
| 15 | + 'teaagent.scope_creep': 'teaagent.governance.scope_creep', |
| 16 | + 'teaagent.release_gate': 'teaagent.governance.release_gate', |
| 17 | + 'teaagent.repo_map_benchmark': 'teaagent.governance.repo_map_benchmark', |
| 18 | + 'teaagent.consensus_validation': 'teaagent.consensus.consensus_validation', |
| 19 | +} |
| 20 | + |
| 21 | + |
| 22 | +class _DeprecatedModuleLoader(importlib.abc.Loader): |
| 23 | + def __init__(self, target: str) -> None: |
| 24 | + self._target = target |
| 25 | + |
| 26 | + def create_module(self, spec: importlib.machinery.ModuleSpec) -> ModuleType | None: |
| 27 | + del spec |
| 28 | + return importlib.import_module(self._target) |
| 29 | + |
| 30 | + def exec_module(self, module: ModuleType) -> None: |
| 31 | + del module |
| 32 | + |
| 33 | + |
| 34 | +class _DeprecatedAliasFinder(importlib.abc.MetaPathFinder): |
| 35 | + def find_spec( |
| 36 | + self, |
| 37 | + fullname: str, |
| 38 | + path: object | None, |
| 39 | + target: ModuleType | None = None, |
| 40 | + ) -> importlib.machinery.ModuleSpec | None: |
| 41 | + del path, target |
| 42 | + target_name = _DEPRECATED_ALIASES.get(fullname) |
| 43 | + if target_name is None: |
| 44 | + return None |
| 45 | + return importlib.util.spec_from_loader( |
| 46 | + fullname, |
| 47 | + _DeprecatedModuleLoader(target_name), |
| 48 | + ) |
| 49 | + |
| 50 | + |
| 51 | +def install_deprecated_module_aliases() -> None: |
| 52 | + if any(isinstance(finder, _DeprecatedAliasFinder) for finder in sys.meta_path): |
| 53 | + return |
| 54 | + sys.meta_path.insert(0, _DeprecatedAliasFinder()) |
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