agent-Specialization/modules/versioning_manager.py
JOJO 478d24c4dd feat(versioning): 重构版本控制为对话级浅备份 + 可选完全备份
本次变更是对版本控制功能的大范围重构,核心目标:
- 默认使用浅备份(只追踪 write_file/edit_file 实际修改的文件),避免大工作区首次初始化耗时十几秒;
- 保留可选的完全备份(git write-tree),不污染 git log;
- 回溯时统一选择范围(仅对话 / 对话+工作区)和模式(覆盖 / 复制);
- 修复复制对话、侧边栏同步、新建对话延迟、diff 统计与渲染等连锁问题。

后端改动:
- modules/shallow_versioning.py(新增)
  - 实现 ShallowVersioningManager:track_edit、make_snapshot、rewind、list_snapshots。
  - 基于 difflib.SequenceMatcher 计算真实 insertions/deletions,replace 场景正确显示 +N/-M。
  - diff 详情使用结构化 add/remove/context 行,不再解析 unified_diff 文本。
- modules/versioning_manager.py
  - 完全备份从 git commit 改为 git write-tree,字段 commit/parent_commit 改为 tree_hash/parent_tree_hash。
  - 恢复改用 read-tree + checkout-index;create_checkpoint 支持 diff_summary 参数。
  - get_checkpoint_detail 保留 API 字段名 last_commit/restored_commit 以兼容前端。
- core/main_terminal_parts/tools_execution.py
  - write_file/edit_file 在执行前调用浅备份 track_edit,保留编辑前状态。
- server/chat_flow_task_main.py
  - 消息轮次结束时根据 backup_mode 选择完全备份 create_checkpoint 或浅备份 make_snapshot。
  - 浅备份模式下同时写入 ConversationVersioningManager 检查点行,让前端能统一展示。
- server/conversation.py
  - restore/detail/list API 支持 shallow 模式;list/detail 对浅备份实时重新计算统计。
  - 创建对话时读取 personalization 的 versioning_backup_mode,shallow 模式固定 tracking_mode 为 conversation_only。
- core/web_terminal.py
  - _ensure_conversation_versioning_enabled 读取默认备份模式并写入 versioning meta。
- modules/file_manager/crud_mixin.py / replace_mixin.py
  - write_file / edit_file 返回 original_file / new_file / replacement_details(真实旧行/新行)。
- modules/personalization_manager.py
  - 新增 versioning_enabled_by_default、versioning_backup_mode(shallow/full)。
- utils/perf_log.py(新增)
  - 创建新对话全链路性能日志,用于定位延迟瓶颈。
- utils/conversation_manager/{index,list_search,crud}_mixin.py
  - 加性能日志;index_mixin 主动检查新增对话文件,修复侧边栏不同步。

前端改动:
- static/src/components/overlay/VersioningDialog.vue
  - 去掉顶部管理范围下拉;底部新增回溯范围与回溯模式选择。
  - diff 详情改为 div.diff-line 网格布局(marker + content),支持横向滚动,状态显示缩写 A/M/D。
  - 修复 pre 标签空白黑行、容器被挤窄导致折行等问题。
- static/src/app/methods/versioning.ts
  - 移除 mismatch 弹窗逻辑;支持 copy 模式;selectVersioningCheckpoint 增强错误捕获。
- static/src/components/personalization/PersonalizationDrawer.vue
  - 「工作区与权限」新增版本控制默认开关与备份方式选择。
- static/src/stores/personalization.ts
  - 新增 versioning_enabled_by_default、versioning_backup_mode 字段。
- static/src/components/chat/actions/ToolAction.vue / toolRenderers.ts
  - edit_file / write_file 工具展示基于 result.details / result.new_file 的真实替换结果。
- static/src/app/state.ts / watchers.ts / App.vue
  - 新增 versioningInitializingBackupToastId,完全备份初始化时显示 toast。
- static/src/app/methods/conversation/action.ts / message/send.ts
  - host + 完全备份 + 默认开启时,创建新对话/从 /new 发送首条消息显示「正在初始化备份」toast。

验证:
- /Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.9/bin/python3.9 -m unittest test.test_server_refactor_smoke 通过。
- npm run build 通过。
- 宿主机与 docker 模式新建对话、编辑文件、回溯、复制对话均验证通过。
2026-07-07 12:07:44 +08:00

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"""Conversation-scoped hidden git versioning for host workspace."""
from __future__ import annotations
import json
import shutil
import subprocess
import time
from dataclasses import dataclass
from datetime import datetime
from pathlib import Path
from typing import Any, Dict, List, Optional, Tuple
from collections import deque
from utils.perf_log import perf_log
class VersioningError(RuntimeError):
"""Raised when hidden git versioning fails."""
@dataclass
class VersioningPaths:
save_root: Path
git_dir: Path
meta_path: Path
inputs_path: Path
snapshots_dir: Path
class ConversationVersioningManager:
"""Manage hidden git snapshots bound to a conversation."""
TRACKING_MODE_WORKSPACE_AND_CONVERSATION = "workspace_and_conversation"
TRACKING_MODE_CONVERSATION_ONLY = "conversation_only"
SYSTEM_AUTO_DIRS = (".agents/compact_result", ".agents/skills", ".agents/user_upload")
# 空 Git tree 对象的固定哈希,用于 tree-to-tree diff 的基准点
EMPTY_TREE_HASH = "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
def __init__(self, project_path: Path | str, data_dir: Path | str, conversation_id: str):
self.project_path = Path(project_path).expanduser().resolve()
self.data_dir = Path(data_dir).expanduser().resolve()
self.conversation_id = str(conversation_id or "").strip()
if not self.conversation_id:
raise VersioningError("缺少 conversation_id")
self.paths = VersioningPaths(
save_root=(self.data_dir / "save" / self.conversation_id).resolve(),
git_dir=(self.data_dir / "save" / self.conversation_id / "git").resolve(),
meta_path=(self.data_dir / "save" / self.conversation_id / "meta.json").resolve(),
inputs_path=(self.data_dir / "save" / self.conversation_id / "inputs.jsonl").resolve(),
snapshots_dir=(self.data_dir / "save" / self.conversation_id / "snapshots").resolve(),
)
@classmethod
def normalize_tracking_mode(cls, mode: Optional[str]) -> str:
raw = str(mode or "").strip().lower()
if raw == cls.TRACKING_MODE_CONVERSATION_ONLY:
return cls.TRACKING_MODE_CONVERSATION_ONLY
return cls.TRACKING_MODE_WORKSPACE_AND_CONVERSATION
# ----------------------------
# low-level helpers
# ----------------------------
def _run_git(
self,
args: List[str],
*,
check: bool = True,
timeout_seconds: int = 180,
) -> Tuple[bool, str, str]:
git_bin = shutil.which("git")
if not git_bin:
raise VersioningError("未检测到 git 可执行文件")
cmd = [
git_bin,
"-c",
"core.quotepath=false",
f"--git-dir={self.paths.git_dir}",
f"--work-tree={self.project_path}",
*args,
]
try:
completed = subprocess.run(
cmd,
capture_output=True,
text=True,
timeout=timeout_seconds,
)
except subprocess.TimeoutExpired as exc:
raise VersioningError(f"git 执行超时: {' '.join(args)}") from exc
ok = completed.returncode == 0
stdout = (completed.stdout or "").strip()
stderr = (completed.stderr or "").strip()
if check and not ok:
raise VersioningError(stderr or stdout or f"git 命令失败: {' '.join(args)}")
return ok, stdout, stderr
def _ensure_exclude_paths(self) -> None:
"""Avoid recursive tracking if save root is inside work tree."""
info_exclude = self.paths.git_dir / "info" / "exclude"
info_exclude.parent.mkdir(parents=True, exist_ok=True)
existing = ""
if info_exclude.exists():
try:
existing = info_exclude.read_text(encoding="utf-8", errors="ignore")
except OSError:
existing = ""
existing_lines = set(existing.splitlines())
lines_to_add: List[str] = []
try:
rel_save = self.paths.save_root.relative_to(self.project_path)
marker = str(rel_save).replace("\\", "/").rstrip("/")
if marker:
lines_to_add.append(f"{marker}/")
except ValueError:
pass
for dirname in self.SYSTEM_AUTO_DIRS:
clean = str(dirname or "").strip().strip("/").replace("\\", "/")
if not clean:
continue
# 同时忽略根目录与任意层级同名目录
lines_to_add.append(f"/{clean}/")
lines_to_add.append(f"{clean}/")
pending = [line for line in lines_to_add if line not in existing_lines]
if not pending:
return
if existing and not existing.endswith("\n"):
pending.insert(0, "")
with info_exclude.open("a", encoding="utf-8") as fh:
fh.write("\n".join(pending) + "\n")
def _drop_ignored_from_index(self) -> None:
"""
Ensure ignored system directories are not kept as tracked files in hidden git index.
"""
for dirname in self.SYSTEM_AUTO_DIRS:
clean = str(dirname or "").strip().strip("/").replace("\\", "/")
if not clean:
continue
self._run_git(["rm", "-r", "--cached", "--ignore-unmatch", "--", clean], check=False)
def _stage_all(self) -> None:
t0 = time.perf_counter()
self._ensure_exclude_paths()
self._drop_ignored_from_index()
perf_log("versioning _stage_all before add", elapsed_ms=(time.perf_counter() - t0) * 1000)
# Stage everything under work tree; exclusions are handled via info/exclude.
t1 = time.perf_counter()
self._run_git(["add", "-A", "--", "."])
perf_log("versioning _stage_all add", elapsed_ms=(time.perf_counter() - t1) * 1000)
perf_log("versioning _stage_all done", elapsed_ms=(time.perf_counter() - t0) * 1000)
def _get_head_tree(self) -> Optional[str]:
"""获取当前 index 对应的 tree hashindex 为空时返回空树对象哈希。"""
ok, out, _ = self._run_git(["write-tree"], check=False)
if ok and out:
return out
# 空 tree 的 hash 是固定的 Git 常量
return "4b825dc642cb6eb9a060e54bf8d69288fbee4904"
def _is_clean(self) -> bool:
ok, out, _ = self._run_git(["status", "--porcelain"], check=False)
if not ok:
return False
return not bool(out.strip())
# ----------------------------
# metadata / records
# ----------------------------
def load_meta(self) -> Dict[str, Any]:
if not self.paths.meta_path.exists():
return {
"enabled": False,
"mode": "overwrite",
"tracking_mode": self.TRACKING_MODE_WORKSPACE_AND_CONVERSATION,
"last_tree_hash": None,
"last_input_seq": 0,
"updated_at": None,
}
try:
payload = json.loads(self.paths.meta_path.read_text(encoding="utf-8")) or {}
payload["tracking_mode"] = self.normalize_tracking_mode(payload.get("tracking_mode"))
return payload
except Exception:
return {
"enabled": False,
"mode": "overwrite",
"tracking_mode": self.TRACKING_MODE_WORKSPACE_AND_CONVERSATION,
"last_tree_hash": None,
"last_input_seq": 0,
"updated_at": None,
}
def save_meta(self, meta: Dict[str, Any]) -> Dict[str, Any]:
payload = dict(meta or {})
payload["tracking_mode"] = self.normalize_tracking_mode(payload.get("tracking_mode"))
payload["updated_at"] = datetime.now().isoformat()
self.paths.meta_path.parent.mkdir(parents=True, exist_ok=True)
self.paths.meta_path.write_text(json.dumps(payload, ensure_ascii=False, indent=2), encoding="utf-8")
return payload
def _read_inputs(self) -> List[Dict[str, Any]]:
if not self.paths.inputs_path.exists():
return []
rows: List[Dict[str, Any]] = []
try:
for raw in self.paths.inputs_path.read_text(encoding="utf-8", errors="ignore").splitlines():
line = raw.strip()
if not line:
continue
try:
row = json.loads(line)
except Exception:
continue
if isinstance(row, dict):
rows.append(self._normalize_checkpoint_row(row))
except OSError:
return []
return rows
def _append_input(self, row: Dict[str, Any]) -> None:
self.paths.inputs_path.parent.mkdir(parents=True, exist_ok=True)
with self.paths.inputs_path.open("a", encoding="utf-8") as fh:
fh.write(json.dumps(row, ensure_ascii=False) + "\n")
def _write_inputs(self, rows: List[Dict[str, Any]]) -> None:
self.paths.inputs_path.parent.mkdir(parents=True, exist_ok=True)
content = "\n".join(json.dumps(row, ensure_ascii=False) for row in (rows or []))
if content:
content += "\n"
self.paths.inputs_path.write_text(content, encoding="utf-8")
def _decode_git_path(self, raw_path: Any) -> str:
text = str(raw_path or "")
stripped = text.strip()
if len(stripped) >= 2 and stripped[0] == '"' and stripped[-1] == '"':
body = stripped[1:-1]
try:
decoded = bytes(body, "utf-8").decode("unicode_escape")
except Exception:
decoded = body
try:
return decoded.encode("latin-1").decode("utf-8")
except Exception:
return decoded
return text
def _normalize_checkpoint_row(self, row: Dict[str, Any]) -> Dict[str, Any]:
payload = dict(row or {})
payload["tracking_mode"] = self.normalize_tracking_mode(payload.get("tracking_mode"))
files = payload.get("files")
if isinstance(files, list):
normalized_files: List[Dict[str, Any]] = []
for file_item in files:
if not isinstance(file_item, dict):
continue
item = dict(file_item)
item["path"] = self._decode_git_path(item.get("path"))
if item.get("old_path") is not None:
item["old_path"] = self._decode_git_path(item.get("old_path"))
normalized_files.append(item)
payload["files"] = normalized_files
return payload
def _write_snapshot(self, seq: int, payload: Dict[str, Any]) -> str:
self.paths.snapshots_dir.mkdir(parents=True, exist_ok=True)
target = self.paths.snapshots_dir / f"{int(seq)}.json"
target.write_text(json.dumps(payload, ensure_ascii=False, indent=2), encoding="utf-8")
return str(target.relative_to(self.paths.save_root))
def get_checkpoint_snapshot(self, seq: int) -> Optional[Dict[str, Any]]:
row = self.get_checkpoint(seq)
if not row:
return None
rel = row.get("snapshot_file")
if not rel:
return None
path = (self.paths.save_root / str(rel)).resolve()
if not path.exists():
return None
try:
return json.loads(path.read_text(encoding="utf-8")) or None
except Exception:
return None
# ----------------------------
# repo lifecycle
# ----------------------------
def ensure_repo(self) -> Dict[str, Any]:
t0 = time.perf_counter()
self.paths.save_root.mkdir(parents=True, exist_ok=True)
self.project_path.mkdir(parents=True, exist_ok=True)
if not self.paths.git_dir.exists():
self.paths.git_dir.mkdir(parents=True, exist_ok=True)
if not (self.paths.git_dir / "HEAD").exists():
self._run_git(["init"])
self._run_git(["config", "user.name", "EasyAgent Versioning"], check=False)
self._run_git(["config", "user.email", "easyagent-versioning@local"], check=False)
perf_log("versioning ensure_repo init", elapsed_ms=(time.perf_counter() - t0) * 1000)
t1 = time.perf_counter()
self._ensure_exclude_paths()
perf_log("versioning ensure_repo exclude", elapsed_ms=(time.perf_counter() - t1) * 1000)
# 使用 write-tree 获取当前 index 的树对象哈希,不创建 commit不污染 git 历史。
t2 = time.perf_counter()
head = self._get_head_tree()
perf_log("versioning ensure_repo write_tree", elapsed_ms=(time.perf_counter() - t2) * 1000)
perf_log("versioning ensure_repo done", elapsed_ms=(time.perf_counter() - t0) * 1000)
return {"ok": True, "head": head}
def set_enabled(
self,
enabled: bool,
mode: Optional[str] = None,
*,
tracking_mode: Optional[str] = None,
) -> Dict[str, Any]:
meta = self.load_meta()
normalized_tracking_mode = self.normalize_tracking_mode(
tracking_mode or meta.get("tracking_mode")
)
if enabled and normalized_tracking_mode == self.TRACKING_MODE_WORKSPACE_AND_CONVERSATION:
self.ensure_repo()
meta["enabled"] = bool(enabled)
meta["mode"] = "overwrite"
meta["tracking_mode"] = normalized_tracking_mode
meta["last_tree_hash"] = self._get_head_tree()
saved = self.save_meta(meta)
return saved
def ensure_initial_checkpoint(
self,
*,
workspace_path: Optional[str] = None,
conversation_snapshot: Optional[Dict[str, Any]] = None,
tracking_mode: Optional[str] = None,
) -> Dict[str, Any]:
"""
Ensure a visible seq=0 checkpoint exists after enabling versioning.
"""
normalized_tracking_mode = self.normalize_tracking_mode(tracking_mode)
if normalized_tracking_mode == self.TRACKING_MODE_WORKSPACE_AND_CONVERSATION:
self.ensure_repo()
existing = self.get_checkpoint(0)
if existing:
return {"created": False, "row": existing, "reason": "already_exists"}
current_head = self._get_head_tree()
if normalized_tracking_mode == self.TRACKING_MODE_WORKSPACE_AND_CONVERSATION and not current_head:
raise VersioningError("创建初始版本点失败:未获取到 commit")
row = {
"seq": 0,
"message": "版本管理开启(初始状态)",
"message_preview": "版本管理开启(初始状态)",
"message_index": -1,
"timestamp": datetime.now().isoformat(),
"workspace_path": str(workspace_path or ""),
"tree_hash": current_head,
"parent_tree_hash": None,
"insertions": 0,
"deletions": 0,
"files_changed": 0,
"files": [],
"changed": False,
"run_status": "initial",
"tracking_mode": normalized_tracking_mode,
}
if isinstance(conversation_snapshot, dict):
row["snapshot_file"] = self._write_snapshot(0, conversation_snapshot)
self._append_input(row)
meta = self.load_meta()
meta["tracking_mode"] = normalized_tracking_mode
meta["last_tree_hash"] = current_head
if int(meta.get("last_input_seq") or 0) < 0:
meta["last_input_seq"] = 0
self.save_meta(meta)
return {"created": True, "row": row, "reason": "created"}
def ensure_baseline_for_first_input(
self,
*,
tracking_mode: Optional[str] = None,
) -> Dict[str, Any]:
"""
Ensure the baseline commit reflects current workspace before first manual input checkpoint.
This is intentionally hidden from checkpoint list (no seq row created).
"""
normalized_tracking_mode = self.normalize_tracking_mode(tracking_mode)
if normalized_tracking_mode == self.TRACKING_MODE_CONVERSATION_ONLY:
return {
"created": False,
"skipped": True,
"reason": "conversation_only_mode",
"head": self._get_head_tree(),
}
self.ensure_repo()
meta = self.load_meta()
if self.get_checkpoint(0):
return {
"created": False,
"skipped": True,
"reason": "initial_checkpoint_exists",
"head": self._get_head_tree(),
}
if int(meta.get("last_input_seq") or 0) > 0:
return {
"created": False,
"skipped": True,
"reason": "already_has_input_checkpoint",
"head": self._get_head_tree(),
}
previous_head = self._get_head_tree()
t_stage = time.perf_counter()
self._stage_all()
perf_log("versioning baseline stage_all", elapsed_ms=(time.perf_counter() - t_stage) * 1000)
t_diff = time.perf_counter()
current_head = self._get_head_tree()
perf_log("versioning baseline write_tree", elapsed_ms=(time.perf_counter() - t_diff) * 1000)
# 通过 tree-to-tree diff 判断是否有变更
_, numstat_text, _ = self._run_git(
["diff", "--numstat", previous_head or self.EMPTY_TREE_HASH, current_head],
check=False,
)
has_changes = bool((numstat_text or "").strip())
meta["last_tree_hash"] = current_head
self.save_meta(meta)
return {
"created": bool(has_changes),
"skipped": False,
"reason": "baseline_committed" if has_changes else "baseline_unchanged",
"head": current_head,
"parent_tree_hash": previous_head,
"has_changes": has_changes,
}
# ----------------------------
# diff / checkpoint
# ----------------------------
def _parse_numstat(self, text: str) -> Dict[str, Dict[str, int]]:
stats: Dict[str, Dict[str, int]] = {}
for line in (text or "").splitlines():
parts = line.split("\t")
if len(parts) < 3:
continue
ins_raw, del_raw = parts[0], parts[1]
path = self._decode_git_path(parts[2])
ins = 0 if ins_raw == "-" else int(ins_raw or 0)
dele = 0 if del_raw == "-" else int(del_raw or 0)
stats[path] = {"insertions": ins, "deletions": dele}
return stats
def _build_diff_summary(self, parent_tree_hash: Optional[str], tree_hash: str) -> Dict[str, Any]:
base = parent_tree_hash or self.EMPTY_TREE_HASH
_, numstat_text, _ = self._run_git(["diff", "--numstat", base, tree_hash], check=False)
_, status_text, _ = self._run_git(["diff", "--name-status", base, tree_hash], check=False)
numstats = self._parse_numstat(numstat_text)
files: List[Dict[str, Any]] = []
total_insertions = 0
total_deletions = 0
for raw in (status_text or "").splitlines():
line = raw.strip()
if not line:
continue
parts = line.split("\t")
code = parts[0] if parts else ""
path = self._decode_git_path(parts[-1] if len(parts) >= 2 else "")
old_path = self._decode_git_path(parts[1]) if code.startswith("R") and len(parts) >= 3 else None
file_stat = numstats.get(path, {"insertions": 0, "deletions": 0})
ins = int(file_stat.get("insertions") or 0)
dele = int(file_stat.get("deletions") or 0)
total_insertions += ins
total_deletions += dele
files.append(
{
"path": path,
"status": code,
"old_path": old_path,
"insertions": ins,
"deletions": dele,
}
)
return {
"insertions": total_insertions,
"deletions": total_deletions,
"files_changed": len(files),
"files": files,
}
def create_checkpoint(
self,
*,
message: str,
message_index: int,
workspace_path: Optional[str] = None,
conversation_snapshot: Optional[Dict[str, Any]] = None,
run_status: Optional[str] = None,
tracking_mode: Optional[str] = None,
diff_summary: Optional[Dict[str, Any]] = None,
) -> Dict[str, Any]:
meta = self.load_meta()
normalized_tracking_mode = self.normalize_tracking_mode(
tracking_mode or meta.get("tracking_mode")
)
previous_head: Optional[str] = self._get_head_tree()
current_head: Optional[str] = previous_head
if normalized_tracking_mode == self.TRACKING_MODE_WORKSPACE_AND_CONVERSATION:
self.ensure_repo()
previous_head = self._get_head_tree()
self._stage_all()
current_head = self._get_head_tree()
if not current_head:
raise VersioningError("创建版本快照失败:未获取到 tree hash")
# 通过 tree-to-tree diff 判断是否有变更
_, numstat_text, _ = self._run_git(
["diff", "--numstat", previous_head or self.EMPTY_TREE_HASH, current_head],
check=False,
)
has_changes = bool((numstat_text or "").strip())
if diff_summary is not None:
diff_summary = dict(diff_summary)
elif (
normalized_tracking_mode == self.TRACKING_MODE_WORKSPACE_AND_CONVERSATION
and current_head != previous_head
):
diff_summary = self._build_diff_summary(previous_head, current_head)
else:
diff_summary = {"insertions": 0, "deletions": 0, "files_changed": 0, "files": []}
seq = int(meta.get("last_input_seq") or 0) + 1
row = {
"seq": seq,
"message": (message or "").strip(),
"message_preview": ((message or "").strip().splitlines() or [""])[0][:200],
"message_index": int(message_index),
"timestamp": datetime.now().isoformat(),
"workspace_path": str(workspace_path or ""),
"tree_hash": current_head,
"parent_tree_hash": previous_head,
"insertions": int(diff_summary.get("insertions") or 0),
"deletions": int(diff_summary.get("deletions") or 0),
"files_changed": int(diff_summary.get("files_changed") or 0),
"files": diff_summary.get("files") or [],
"changed": bool(
normalized_tracking_mode == self.TRACKING_MODE_WORKSPACE_AND_CONVERSATION
and current_head != previous_head
),
"tracking_mode": normalized_tracking_mode,
}
if isinstance(conversation_snapshot, dict):
row["snapshot_file"] = self._write_snapshot(seq, conversation_snapshot)
shallow_message_id = conversation_snapshot.get("shallow_message_id")
if shallow_message_id:
row["shallow_message_id"] = str(shallow_message_id)
if run_status:
row["run_status"] = str(run_status)
self._append_input(row)
meta["last_input_seq"] = seq
meta["last_tree_hash"] = current_head
meta["tracking_mode"] = normalized_tracking_mode
self.save_meta(meta)
return row
def list_checkpoints(self) -> List[Dict[str, Any]]:
rows = self._read_inputs()
rows.sort(key=lambda item: int(item.get("seq") or 0), reverse=True)
return rows
def get_checkpoint(self, seq: int) -> Optional[Dict[str, Any]]:
for row in self._read_inputs():
if int(row.get("seq") or 0) == int(seq):
return row
return None
def _collect_file_patch_lines(
self,
*,
parent_tree_hash: Optional[str],
tree_hash: str,
path: str,
old_path: Optional[str] = None,
max_lines: int = 600,
) -> Dict[str, Any]:
target_paths: List[str] = []
for candidate in [old_path, path]:
value = str(candidate or "").strip()
if value and value not in target_paths:
target_paths.append(value)
if not target_paths:
return {"lines": [], "truncated": False}
base = parent_tree_hash or self.EMPTY_TREE_HASH
_, patch_text, _ = self._run_git(
["diff", "--no-color", "--unified=200", base, tree_hash, "--", *target_paths],
check=False,
)
parsed = self._extract_contextual_patch_lines(patch_text or "", max_lines=max_lines)
lines = parsed.get("lines") or []
truncated = bool(parsed.get("truncated"))
# 回退策略:若按路径过滤拿不到行,但该文件确实有增删,尝试从整次 commit patch 中按文件段提取。
if not lines:
fallback = self._collect_file_patch_lines_from_full_diff(
parent_tree_hash=parent_tree_hash,
tree_hash=tree_hash,
target_paths=target_paths,
max_lines=max_lines,
)
lines = fallback.get("lines") or []
truncated = bool(fallback.get("truncated")) or truncated
return {"lines": lines, "truncated": truncated}
def _collect_file_patch_lines_from_full_diff(
self,
*,
parent_tree_hash: Optional[str],
tree_hash: str,
target_paths: List[str],
max_lines: int = 600,
) -> Dict[str, Any]:
base = parent_tree_hash or self.EMPTY_TREE_HASH
_, patch_text, _ = self._run_git(
["diff", "--no-color", "--unified=200", base, tree_hash],
check=False,
)
targets = {str(p or "").lstrip("./") for p in target_paths if str(p or "").strip()}
chunk_lines: List[str] = []
lines: List[Dict[str, Any]] = []
truncated = False
in_target_section = False
for raw in (patch_text or "").splitlines():
if raw.startswith("diff --git "):
if in_target_section and chunk_lines and len(lines) < max_lines:
parsed_chunk = self._extract_contextual_patch_lines("\n".join(chunk_lines), max_lines=max_lines - len(lines))
lines.extend(parsed_chunk.get("lines") or [])
truncated = truncated or bool(parsed_chunk.get("truncated"))
chunk_lines = []
in_target_section = False
try:
parts = raw.split(" ")
a_path = self._decode_git_path((parts[2] or "").replace("a/", "", 1)).lstrip("./")
b_path = self._decode_git_path((parts[3] or "").replace("b/", "", 1)).lstrip("./")
if a_path in targets or b_path in targets:
in_target_section = True
except Exception:
in_target_section = False
continue
if not in_target_section:
continue
chunk_lines.append(raw)
if len(lines) >= max_lines:
truncated = True
break
if in_target_section and chunk_lines and len(lines) < max_lines and not truncated:
parsed_chunk = self._extract_contextual_patch_lines("\n".join(chunk_lines), max_lines=max_lines - len(lines))
lines.extend(parsed_chunk.get("lines") or [])
truncated = truncated or bool(parsed_chunk.get("truncated"))
if len(lines) > max_lines:
lines = lines[:max_lines]
truncated = True
return {"lines": lines, "truncated": truncated}
def get_checkpoint_detail(self, seq: int, *, include_patch: bool = True) -> Optional[Dict[str, Any]]:
row = self.get_checkpoint(seq)
if not row:
return None
payload = dict(row)
files = payload.get("files")
if not include_patch or not isinstance(files, list):
return payload
parent_tree_hash = payload.get("parent_tree_hash")
tree_hash = payload.get("tree_hash")
normalized_files: List[Dict[str, Any]] = []
for file_item in files:
if not isinstance(file_item, dict):
continue
item = dict(file_item)
if tree_hash and str(item.get("path") or "").strip():
patch = self._collect_file_patch_lines(
parent_tree_hash=parent_tree_hash,
tree_hash=tree_hash,
path=str(item.get("path") or ""),
old_path=item.get("old_path"),
)
item["patch_lines"] = patch.get("lines") or []
item["patch_truncated"] = bool(patch.get("truncated"))
else:
item["patch_lines"] = []
item["patch_truncated"] = False
normalized_files.append(item)
payload["files"] = normalized_files
return payload
def get_latest_checkpoint(self) -> Optional[Dict[str, Any]]:
rows = self.list_checkpoints()
return rows[0] if rows else None
def prune_checkpoints_after(self, seq: int) -> Dict[str, Any]:
target = int(seq)
rows = self._read_inputs()
if not rows:
return {"kept": 0, "removed": 0, "max_seq": 0}
kept_rows = [row for row in rows if int(row.get("seq") or 0) <= target]
removed_rows = [row for row in rows if int(row.get("seq") or 0) > target]
for row in removed_rows:
rel = row.get("snapshot_file")
if not rel:
continue
try:
path = (self.paths.save_root / str(rel)).resolve()
if path.exists() and path.is_file():
path.unlink()
except Exception:
continue
self._write_inputs(kept_rows)
max_seq = max((int(r.get("seq") or 0) for r in kept_rows), default=0)
latest_kept = None
for r in kept_rows:
if int(r.get("seq") or 0) == max_seq:
latest_kept = r
meta = self.load_meta()
meta["last_input_seq"] = max_seq
meta["last_tree_hash"] = (latest_kept or {}).get("tree_hash") or self._get_head_tree()
self.save_meta(meta)
return {
"kept": len(kept_rows),
"removed": len(removed_rows),
"max_seq": max_seq,
"last_tree_hash": meta.get("last_tree_hash"),
}
# ----------------------------
# restore / status
# ----------------------------
def restore_to_tree(self, tree_hash: str) -> Dict[str, Any]:
if not tree_hash:
raise VersioningError("缺少 tree hash")
self.ensure_repo()
ok, _, _ = self._run_git(["cat-file", "-e", tree_hash], check=False)
if not ok:
raise VersioningError("目标 tree 不存在")
# 使用 read-tree + checkout-index 恢复到指定 tree不依赖 commit 历史
self._run_git(["read-tree", tree_hash])
self._run_git(["checkout-index", "-a", "-f"])
self._run_git(["clean", "-fd"])
meta = self.load_meta()
meta["last_restored_tree_hash"] = tree_hash
meta["last_tree_hash"] = tree_hash
self.save_meta(meta)
return {"success": True, "tree_hash": tree_hash}
def detect_mismatch(
self,
latest_tree_hash: Optional[str],
expected_workspace_path: Optional[str] = None,
*,
tracking_mode: Optional[str] = None,
) -> Dict[str, Any]:
normalized_tracking_mode = self.normalize_tracking_mode(tracking_mode)
if normalized_tracking_mode == self.TRACKING_MODE_CONVERSATION_ONLY:
return {
"has_repo": (self.paths.git_dir / "HEAD").exists(),
"head": self._get_head_tree(),
"dirty": False,
"mismatch": False,
"workspace_matched": True,
}
expected = str(expected_workspace_path or "").strip()
current = str(self.project_path)
workspace_matched = True if not expected else (Path(expected).expanduser().resolve() == self.project_path)
if not (self.paths.git_dir / "HEAD").exists():
return {
"has_repo": False,
"head": None,
"dirty": False,
"mismatch": False,
"workspace_matched": workspace_matched,
}
if not workspace_matched:
return {
"has_repo": True,
"head": self._get_head_tree(),
"dirty": False,
"mismatch": False,
"workspace_matched": False,
"expected_workspace_path": expected,
"current_workspace_path": current,
}
head = self._get_head_tree()
dirty = not self._is_clean()
mismatch = bool(dirty or (latest_tree_hash and head and latest_tree_hash != head))
return {
"has_repo": True,
"head": head,
"dirty": dirty,
"mismatch": mismatch,
"workspace_matched": True,
"expected_workspace_path": expected or current,
"current_workspace_path": current,
}
def _extract_contextual_patch_lines(self, patch_text: str, max_lines: int = 600) -> Dict[str, Any]:
"""
Extract +/- lines plus 3 context lines before and after changed regions.
"""
lines: List[Dict[str, Any]] = []
truncated = False
pre_context: deque[str] = deque(maxlen=3)
post_context_needed = 0
for raw in (patch_text or "").splitlines():
if raw.startswith("diff --git "):
pre_context.clear()
post_context_needed = 0
continue
if raw.startswith("index ") or raw.startswith("--- ") or raw.startswith("+++ "):
continue
if raw.startswith("@@"):
pre_context.clear()
post_context_needed = 0
continue
if not raw:
prefix = " "
content = ""
else:
prefix = raw[0]
content = raw[1:] if len(raw) > 1 else ""
if prefix == " ":
if post_context_needed > 0:
lines.append({"type": "context", "content": content})
post_context_needed -= 1
else:
pre_context.append(content)
elif prefix in {"+", "-"}:
if pre_context:
for ctx in pre_context:
lines.append({"type": "context", "content": ctx})
pre_context.clear()
lines.append({"type": "add" if prefix == "+" else "remove", "content": content})
post_context_needed = 3
else:
continue
if len(lines) >= max_lines:
truncated = True
break
return {"lines": lines[:max_lines], "truncated": truncated}