90a0db005f
- 新增 adr_watcher.py: SHA256 hash 监控 ADR 文件变更 - snapshot() 初始快照, detect_changes() 增量检测 - 识别 new/modified/superseded/deleted 四种变更类型 - _parse_status() 解析 ADR Status 字段 - 新增 partial_replanner.py: 局部重规划器 - replan() 仅生成受影响任务的替代计划 - _extract_stable_interfaces() 提取未受影响 DONE 任务接口约束 - 产出 replan-request.json 供 Arc 读取 - Eng monitor_engine 集成 ADR 检测: 每轮轮询调用 _detect_adr_changes() - Eng handle_adr_invalidation 集成 PartialReplanner 输出 - events.py 新增 ADR 变更相关事件常量 - task_graph.py apply_full_replace 保留 DISPATCHED, 不保留 INVALIDATED - 10 项补充测试全通过，含完整 ADR 流程场景 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
110 lines
3.7 KiB
Python
110 lines
3.7 KiB
Python
"""
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ADR 文件变更监控 — P1-21 ADR 变更自动检测。
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基于 SHA256 hash 对比检测 ADR 文件变更，自动触发级联失效。
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"""
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from __future__ import annotations
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import hashlib
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import re
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from dataclasses import dataclass, field
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from pathlib import Path
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@dataclass
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class ADRChange:
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"""ADR 文件变更记录。"""
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adr_id: str
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kind: str # "new" | "superseded" | "modified"
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path: str = ""
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old_hash: str = ""
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new_hash: str = ""
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class ADRWatcher:
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"""监控 ADR 文件变更，自动触发级联失效。
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AirEng 在每轮轮询时调用 detect_changes()，
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发现 superseded 或 modified 变更时自动触发 invalidate_by_adr()。
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"""
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def __init__(self, adr_dir: Path):
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self._adr_dir = adr_dir
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self._known_hashes: dict[str, str] = {}
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def snapshot(self) -> None:
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"""启动时记录所有 ADR 的内容 hash。"""
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if not self._adr_dir.exists():
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return
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for adr_file in sorted(self._adr_dir.glob("ADR-*.md")):
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adr_id = self._extract_adr_id(adr_file)
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self._known_hashes[adr_id] = hashlib.sha256(
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adr_file.read_bytes()
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).hexdigest()
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def detect_changes(self) -> list[ADRChange]:
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"""对比当前 ADR hash 与已知 hash，返回变更列表。"""
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if not self._adr_dir.exists():
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return []
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changes: list[ADRChange] = []
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seen_ids: set[str] = set()
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for adr_file in sorted(self._adr_dir.glob("ADR-*.md")):
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adr_id = self._extract_adr_id(adr_file)
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seen_ids.add(adr_id)
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current_hash = hashlib.sha256(adr_file.read_bytes()).hexdigest()
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old_hash = self._known_hashes.get(adr_id)
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if old_hash is None:
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changes.append(ADRChange(
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adr_id=adr_id, kind="new",
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path=str(adr_file), old_hash="", new_hash=current_hash,
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))
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elif current_hash != old_hash:
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status = self._parse_status(adr_file)
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if status == "superseded":
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changes.append(ADRChange(
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adr_id=adr_id, kind="superseded",
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path=str(adr_file), old_hash=old_hash, new_hash=current_hash,
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))
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else:
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changes.append(ADRChange(
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adr_id=adr_id, kind="modified",
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path=str(adr_file), old_hash=old_hash, new_hash=current_hash,
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))
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self._known_hashes[adr_id] = current_hash
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# 检查被删除的 ADR
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for adr_id in list(self._known_hashes.keys()):
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if adr_id not in seen_ids:
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changes.append(ADRChange(
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adr_id=adr_id, kind="deleted",
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path="", old_hash=self._known_hashes[adr_id], new_hash="",
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))
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del self._known_hashes[adr_id]
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return changes
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@staticmethod
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def _extract_adr_id(adr_file: Path) -> str:
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"""从文件名提取 ADR ID，如 'ADR-0005-ffmpeg-decode.md' → 'ADR-0005'。"""
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match = re.match(r"(ADR-\d+)", adr_file.stem)
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if match:
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return match.group(1)
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return adr_file.stem
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@staticmethod
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def _parse_status(adr_file: Path) -> str:
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"""解析 ADR 文件中的 Status 字段。"""
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try:
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text = adr_file.read_text(encoding="utf-8")
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except (OSError, UnicodeDecodeError):
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return "unknown"
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for line in text.splitlines():
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lower = line.lower().strip()
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if lower.startswith("status:") or lower.startswith("status :"):
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status = line.split(":", 1)[1].strip().lower()
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return status
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return "unknown"
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