607 lines
22 KiB
Python
607 lines
22 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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ZSGLPT Update-Agent（宿主机运行）
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职责：
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- 定期检查 Git 远端是否有新版本（写入 data/update/status.json）
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- 接收后台写入的 data/update/request.json 请求（check/update）
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- 执行 git reset --hard origin/<branch> + docker compose build/up
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- 更新前备份数据库 data/app_data.db
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- 写入 data/update/result.json 与 data/update/jobs/<job_id>.log
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仅使用标准库，便于在宿主机直接运行。
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"""
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from __future__ import annotations
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import argparse
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import fnmatch
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import json
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import os
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import shutil
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import subprocess
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import sys
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import time
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import urllib.error
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import urllib.request
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import uuid
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from dataclasses import dataclass
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from datetime import datetime
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from pathlib import Path
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from typing import Dict, Optional, Tuple
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def ts_str() -> str:
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return datetime.now().strftime("%Y-%m-%d %H:%M:%S")
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def json_load(path: Path) -> Tuple[dict, Optional[str]]:
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try:
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with open(path, "r", encoding="utf-8") as f:
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return dict(json.load(f) or {}), None
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except FileNotFoundError:
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return {}, None
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except Exception as e:
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return {}, f"{type(e).__name__}: {e}"
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def json_dump_atomic(path: Path, data: dict) -> None:
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path.parent.mkdir(parents=True, exist_ok=True)
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tmp = path.with_suffix(f"{path.suffix}.tmp.{os.getpid()}.{int(time.time() * 1000)}")
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with open(tmp, "w", encoding="utf-8") as f:
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json.dump(data, f, ensure_ascii=False, indent=2, sort_keys=True)
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f.flush()
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os.fsync(f.fileno())
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os.replace(tmp, path)
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def sanitize_job_id(value: object) -> str:
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import re
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text = str(value or "").strip()
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if not text:
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return f"job_{uuid.uuid4().hex[:8]}"
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if not re.fullmatch(r"[A-Za-z0-9][A-Za-z0-9_.-]{0,63}", text):
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return f"job_{uuid.uuid4().hex[:8]}"
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return text
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def _as_bool(value: object) -> bool:
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if isinstance(value, bool):
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return value
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if isinstance(value, int):
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return value != 0
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text = str(value or "").strip().lower()
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return text in ("1", "true", "yes", "y", "on")
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def _run(cmd: list[str], *, cwd: Path, log_fp, env: Optional[dict] = None, check: bool = True) -> subprocess.CompletedProcess:
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log_fp.write(f"[{ts_str()}] $ {' '.join(cmd)}\n")
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log_fp.flush()
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merged_env = os.environ.copy()
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if env:
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merged_env.update(env)
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return subprocess.run(
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cmd,
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cwd=str(cwd),
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env=merged_env,
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stdout=log_fp,
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stderr=log_fp,
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text=True,
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check=check,
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)
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def _git_rev_parse(ref: str, *, cwd: Path) -> str:
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out = subprocess.check_output(["git", "rev-parse", ref], cwd=str(cwd), text=True).strip()
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return out
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def _git_has_tracked_changes(*, cwd: Path) -> bool:
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"""是否存在 tracked 的未提交修改（含暂存区）。"""
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for cmd in (["git", "diff", "--quiet"], ["git", "diff", "--cached", "--quiet"]):
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proc = subprocess.run(cmd, cwd=str(cwd))
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if proc.returncode == 1:
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return True
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if proc.returncode != 0:
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raise RuntimeError(f"{' '.join(cmd)} failed with code {proc.returncode}")
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return False
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def _normalize_prefixes(prefixes: Tuple[str, ...]) -> Tuple[str, ...]:
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normalized = []
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for p in prefixes:
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text = str(p or "").strip()
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if not text:
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continue
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if not text.endswith("/"):
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text += "/"
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normalized.append(text)
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return tuple(normalized)
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def _git_has_untracked_changes(*, cwd: Path, ignore_prefixes: Tuple[str, ...]) -> Tuple[bool, int, list[str]]:
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"""检查 untracked 文件（尊重 .gitignore），并忽略指定前缀目录。"""
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return _git_has_untracked_changes_v2(cwd=cwd, ignore_prefixes=ignore_prefixes, ignore_globs=())
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def _normalize_globs(globs: Tuple[str, ...]) -> Tuple[str, ...]:
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normalized = []
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for g in globs:
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text = str(g or "").strip()
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if not text:
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continue
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normalized.append(text)
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return tuple(normalized)
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def _git_has_untracked_changes_v2(
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*, cwd: Path, ignore_prefixes: Tuple[str, ...], ignore_globs: Tuple[str, ...]
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) -> Tuple[bool, int, list[str]]:
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"""检查 untracked 文件（尊重 .gitignore），并忽略指定前缀目录/通配符。"""
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ignore_prefixes = _normalize_prefixes(ignore_prefixes)
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ignore_globs = _normalize_globs(ignore_globs)
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out = subprocess.check_output(["git", "ls-files", "--others", "--exclude-standard"], cwd=str(cwd), text=True)
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paths = [line.strip() for line in out.splitlines() if line.strip()]
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filtered = []
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for p in paths:
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if ignore_prefixes and any(p.startswith(prefix) for prefix in ignore_prefixes):
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continue
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if ignore_globs and any(fnmatch.fnmatch(p, pattern) for pattern in ignore_globs):
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continue
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filtered.append(p)
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samples = filtered[:20]
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return (len(filtered) > 0), len(filtered), samples
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def _git_is_dirty(
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*,
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cwd: Path,
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ignore_untracked_prefixes: Tuple[str, ...] = ("data/",),
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ignore_untracked_globs: Tuple[str, ...] = ("*.bak.*", "*.tmp.*", "*.backup.*"),
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) -> dict:
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"""
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判断工作区是否“脏”：
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- tracked 变更（含暂存区）一律算脏
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- untracked 文件默认忽略 data/（运行时数据目录，避免后台长期提示）
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"""
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tracked_dirty = False
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untracked_dirty = False
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untracked_count = 0
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untracked_samples: list[str] = []
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try:
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tracked_dirty = _git_has_tracked_changes(cwd=cwd)
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except Exception:
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# 若 diff 检测异常，回退到保守策略：认为脏
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tracked_dirty = True
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try:
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untracked_dirty, untracked_count, untracked_samples = _git_has_untracked_changes_v2(
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cwd=cwd, ignore_prefixes=ignore_untracked_prefixes, ignore_globs=ignore_untracked_globs
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)
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except Exception:
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# 若 untracked 检测异常，回退到不影响更新：不计入 dirty
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untracked_dirty = False
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untracked_count = 0
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untracked_samples = []
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return {
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"dirty": bool(tracked_dirty or untracked_dirty),
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"dirty_tracked": bool(tracked_dirty),
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"dirty_untracked": bool(untracked_dirty),
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"dirty_ignore_untracked_prefixes": list(_normalize_prefixes(ignore_untracked_prefixes)),
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"dirty_ignore_untracked_globs": list(_normalize_globs(ignore_untracked_globs)),
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"untracked_count": int(untracked_count),
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"untracked_samples": list(untracked_samples),
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}
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def _compose_cmd() -> list[str]:
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# 优先使用 docker compose（v2）
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try:
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subprocess.check_output(["docker", "compose", "version"], stderr=subprocess.STDOUT, text=True)
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return ["docker", "compose"]
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except Exception:
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return ["docker-compose"]
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def _http_healthcheck(url: str, *, timeout: float = 5.0) -> Tuple[bool, str]:
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try:
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req = urllib.request.Request(url, headers={"User-Agent": "zsglpt-update-agent/1.0"})
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with urllib.request.urlopen(req, timeout=timeout) as resp:
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code = int(getattr(resp, "status", 200) or 200)
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if 200 <= code < 400:
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return True, f"HTTP {code}"
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return False, f"HTTP {code}"
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except urllib.error.HTTPError as e:
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return False, f"HTTPError {e.code}"
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except Exception as e:
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return False, f"{type(e).__name__}: {e}"
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@dataclass
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class Paths:
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repo_dir: Path
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data_dir: Path
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update_dir: Path
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status_path: Path
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request_path: Path
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result_path: Path
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jobs_dir: Path
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def build_paths(repo_dir: Path, data_dir: Optional[Path] = None) -> Paths:
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repo_dir = repo_dir.resolve()
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data_dir = (data_dir or (repo_dir / "data")).resolve()
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update_dir = data_dir / "update"
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return Paths(
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repo_dir=repo_dir,
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data_dir=data_dir,
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update_dir=update_dir,
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status_path=update_dir / "status.json",
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request_path=update_dir / "request.json",
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result_path=update_dir / "result.json",
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jobs_dir=update_dir / "jobs",
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)
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def ensure_dirs(paths: Paths) -> None:
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paths.jobs_dir.mkdir(parents=True, exist_ok=True)
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def check_updates(*, paths: Paths, branch: str, log_fp=None) -> dict:
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env = {"GIT_TERMINAL_PROMPT": "0"}
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err = ""
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local = ""
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remote = ""
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dirty_info: dict = {}
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try:
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if log_fp:
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_run(["git", "fetch", "origin", branch], cwd=paths.repo_dir, log_fp=log_fp, env=env)
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else:
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subprocess.run(["git", "fetch", "origin", branch], cwd=str(paths.repo_dir), env={**os.environ, **env}, check=True)
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local = _git_rev_parse("HEAD", cwd=paths.repo_dir)
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remote = _git_rev_parse(f"origin/{branch}", cwd=paths.repo_dir)
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dirty_info = _git_is_dirty(cwd=paths.repo_dir, ignore_untracked_prefixes=("data/",))
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except Exception as e:
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err = f"{type(e).__name__}: {e}"
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update_available = bool(local and remote and local != remote) if not err else False
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return {
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"branch": branch,
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"checked_at": ts_str(),
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"local_commit": local,
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"remote_commit": remote,
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"update_available": update_available,
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**(dirty_info or {"dirty": False}),
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"error": err,
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}
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def backup_db(*, paths: Paths, log_fp, keep: int = 20) -> str:
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db_path = paths.data_dir / "app_data.db"
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backups_dir = paths.data_dir / "backups"
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backups_dir.mkdir(parents=True, exist_ok=True)
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stamp = datetime.now().strftime("%Y%m%d_%H%M%S")
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backup_path = backups_dir / f"app_data.db.{stamp}.bak"
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if db_path.exists():
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log_fp.write(f"[{ts_str()}] backup db: {db_path} -> {backup_path}\n")
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log_fp.flush()
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shutil.copy2(db_path, backup_path)
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else:
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log_fp.write(f"[{ts_str()}] backup skipped: db not found: {db_path}\n")
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log_fp.flush()
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# 简单保留策略：按文件名排序，保留最近 keep 个
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try:
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items = sorted([p for p in backups_dir.glob("app_data.db.*.bak") if p.is_file()], key=lambda p: p.name)
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if len(items) > keep:
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for p in items[: len(items) - keep]:
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try:
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p.unlink()
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except Exception:
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pass
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except Exception:
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pass
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return str(backup_path)
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def write_result(paths: Paths, data: dict) -> None:
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json_dump_atomic(paths.result_path, data)
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def consume_request(paths: Paths) -> Tuple[dict, Optional[str]]:
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data, err = json_load(paths.request_path)
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if err:
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# 避免解析失败导致死循环：将坏文件移走
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try:
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bad_name = f"request.bad.{datetime.now().strftime('%Y%m%d_%H%M%S')}.{uuid.uuid4().hex[:6]}.json"
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bad_path = paths.update_dir / bad_name
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paths.request_path.rename(bad_path)
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except Exception:
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try:
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paths.request_path.unlink(missing_ok=True) # type: ignore[arg-type]
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except Exception:
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pass
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return {}, err
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if not data:
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return {}, None
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try:
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paths.request_path.unlink(missing_ok=True) # type: ignore[arg-type]
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except Exception:
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try:
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os.remove(paths.request_path)
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except Exception:
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pass
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return data, None
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def handle_update_job(
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*,
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paths: Paths,
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branch: str,
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health_url: str,
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job_id: str,
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requested_by: str,
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build_no_cache: bool = False,
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build_pull: bool = False,
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) -> None:
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ensure_dirs(paths)
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log_path = paths.jobs_dir / f"{job_id}.log"
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with open(log_path, "a", encoding="utf-8") as log_fp:
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log_fp.write(f"[{ts_str()}] job start: {job_id}, branch={branch}, by={requested_by}\n")
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log_fp.flush()
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result: Dict[str, object] = {
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"job_id": job_id,
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"action": "update",
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"status": "running",
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"stage": "start",
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"message": "",
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"started_at": ts_str(),
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"finished_at": None,
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"duration_seconds": None,
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"requested_by": requested_by,
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"branch": branch,
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"build_no_cache": bool(build_no_cache),
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"build_pull": bool(build_pull),
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"from_commit": None,
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"to_commit": None,
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"backup_db": None,
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"health_url": health_url,
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"health_ok": None,
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"health_message": None,
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"error": "",
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}
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write_result(paths, result)
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start_ts = time.time()
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try:
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result["stage"] = "backup"
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result["message"] = "备份数据库"
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write_result(paths, result)
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result["backup_db"] = backup_db(paths=paths, log_fp=log_fp)
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result["stage"] = "git_fetch"
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result["message"] = "拉取远端代码"
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write_result(paths, result)
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_run(["git", "fetch", "origin", branch], cwd=paths.repo_dir, log_fp=log_fp, env={"GIT_TERMINAL_PROMPT": "0"})
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from_commit = _git_rev_parse("HEAD", cwd=paths.repo_dir)
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result["from_commit"] = from_commit
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result["stage"] = "git_reset"
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result["message"] = f"切换到 origin/{branch}"
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write_result(paths, result)
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_run(["git", "reset", "--hard", f"origin/{branch}"], cwd=paths.repo_dir, log_fp=log_fp, env={"GIT_TERMINAL_PROMPT": "0"})
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to_commit = _git_rev_parse("HEAD", cwd=paths.repo_dir)
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result["to_commit"] = to_commit
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compose = _compose_cmd()
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result["stage"] = "docker_build"
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result["message"] = "构建容器镜像"
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write_result(paths, result)
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build_no_cache = bool(result.get("build_no_cache") is True)
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build_pull = bool(result.get("build_pull") is True)
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build_cmd = [*compose, "build"]
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if build_pull:
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build_cmd.append("--pull")
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if build_no_cache:
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build_cmd.append("--no-cache")
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try:
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_run(build_cmd, cwd=paths.repo_dir, log_fp=log_fp)
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except subprocess.CalledProcessError as e:
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if (not build_no_cache) and (e.returncode != 0):
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log_fp.write(f"[{ts_str()}] build failed, retry with --no-cache\n")
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log_fp.flush()
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build_no_cache = True
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result["build_no_cache"] = True
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write_result(paths, result)
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retry_cmd = [*compose, "build"]
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if build_pull:
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retry_cmd.append("--pull")
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retry_cmd.append("--no-cache")
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_run(retry_cmd, cwd=paths.repo_dir, log_fp=log_fp)
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else:
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raise
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result["stage"] = "docker_up"
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result["message"] = "重建并启动服务"
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write_result(paths, result)
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_run([*compose, "up", "-d", "--force-recreate"], cwd=paths.repo_dir, log_fp=log_fp)
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result["stage"] = "health_check"
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result["message"] = "健康检查"
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write_result(paths, result)
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ok = False
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health_msg = ""
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deadline = time.time() + 180
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while time.time() < deadline:
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ok, health_msg = _http_healthcheck(health_url, timeout=5.0)
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if ok:
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break
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time.sleep(3)
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result["health_ok"] = ok
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result["health_message"] = health_msg
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if not ok:
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raise RuntimeError(f"healthcheck failed: {health_msg}")
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result["status"] = "success"
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result["stage"] = "done"
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result["message"] = "更新完成"
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except Exception as e:
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result["status"] = "failed"
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result["error"] = f"{type(e).__name__}: {e}"
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result["stage"] = result.get("stage") or "failed"
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result["message"] = "更新失败"
|
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log_fp.write(f"[{ts_str()}] ERROR: {result['error']}\n")
|
||
log_fp.flush()
|
||
finally:
|
||
result["finished_at"] = ts_str()
|
||
result["duration_seconds"] = int(time.time() - start_ts)
|
||
write_result(paths, result)
|
||
|
||
# 更新 status（成功/失败都尽量写一份最新状态）
|
||
try:
|
||
status = check_updates(paths=paths, branch=branch, log_fp=log_fp)
|
||
json_dump_atomic(paths.status_path, status)
|
||
except Exception:
|
||
pass
|
||
|
||
log_fp.write(f"[{ts_str()}] job end: {job_id}\n")
|
||
log_fp.flush()
|
||
|
||
|
||
def handle_check_job(*, paths: Paths, branch: str, job_id: str, requested_by: str) -> None:
|
||
ensure_dirs(paths)
|
||
log_path = paths.jobs_dir / f"{job_id}.log"
|
||
with open(log_path, "a", encoding="utf-8") as log_fp:
|
||
log_fp.write(f"[{ts_str()}] job start: {job_id}, action=check, branch={branch}, by={requested_by}\n")
|
||
log_fp.flush()
|
||
status = check_updates(paths=paths, branch=branch, log_fp=log_fp)
|
||
json_dump_atomic(paths.status_path, status)
|
||
log_fp.write(f"[{ts_str()}] job end: {job_id}\n")
|
||
log_fp.flush()
|
||
|
||
|
||
def main(argv: list[str]) -> int:
|
||
parser = argparse.ArgumentParser(description="ZSGLPT Update-Agent (host)")
|
||
parser.add_argument("--repo-dir", default=".", help="部署仓库目录（包含 docker-compose.yml）")
|
||
parser.add_argument("--data-dir", default="", help="数据目录（默认 <repo>/data）")
|
||
parser.add_argument("--branch", default="master", help="允许更新的分支名（默认 master）")
|
||
parser.add_argument("--health-url", default="http://127.0.0.1:51232/", help="更新后健康检查URL")
|
||
parser.add_argument("--check-interval-seconds", type=int, default=300, help="自动检查更新间隔（秒）")
|
||
parser.add_argument("--poll-seconds", type=int, default=5, help="轮询 request.json 的间隔（秒）")
|
||
args = parser.parse_args(argv)
|
||
|
||
repo_dir = Path(args.repo_dir).resolve()
|
||
if not (repo_dir / "docker-compose.yml").exists():
|
||
print(f"[fatal] docker-compose.yml not found in {repo_dir}", file=sys.stderr)
|
||
return 2
|
||
if not (repo_dir / ".git").exists():
|
||
print(f"[fatal] .git not found in {repo_dir} (need git repo)", file=sys.stderr)
|
||
return 2
|
||
|
||
data_dir = Path(args.data_dir).resolve() if args.data_dir else None
|
||
paths = build_paths(repo_dir, data_dir=data_dir)
|
||
ensure_dirs(paths)
|
||
|
||
last_check_ts = 0.0
|
||
check_interval = max(30, int(args.check_interval_seconds))
|
||
poll_seconds = max(2, int(args.poll_seconds))
|
||
branch = str(args.branch or "master").strip()
|
||
health_url = str(args.health_url or "").strip()
|
||
|
||
# 启动时先写一次状态，便于后台立即看到
|
||
try:
|
||
status = check_updates(paths=paths, branch=branch)
|
||
json_dump_atomic(paths.status_path, status)
|
||
last_check_ts = time.time()
|
||
except Exception:
|
||
pass
|
||
|
||
while True:
|
||
try:
|
||
# 1) 优先处理 request
|
||
req, err = consume_request(paths)
|
||
if err:
|
||
# request 文件损坏：写入 result 便于后台看到
|
||
write_result(
|
||
paths,
|
||
{
|
||
"job_id": f"badreq_{uuid.uuid4().hex[:8]}",
|
||
"action": "unknown",
|
||
"status": "failed",
|
||
"stage": "parse_request",
|
||
"message": "request.json 解析失败",
|
||
"error": err,
|
||
"started_at": ts_str(),
|
||
"finished_at": ts_str(),
|
||
},
|
||
)
|
||
elif req:
|
||
action = str(req.get("action") or "").strip().lower()
|
||
job_id = sanitize_job_id(req.get("job_id"))
|
||
requested_by = str(req.get("requested_by") or "")
|
||
|
||
# 只允许固定分支，避免被注入/误操作
|
||
if action not in ("check", "update"):
|
||
write_result(
|
||
paths,
|
||
{
|
||
"job_id": job_id,
|
||
"action": action,
|
||
"status": "failed",
|
||
"stage": "validate",
|
||
"message": "不支持的 action",
|
||
"error": f"unsupported action: {action}",
|
||
"started_at": ts_str(),
|
||
"finished_at": ts_str(),
|
||
},
|
||
)
|
||
elif action == "check":
|
||
handle_check_job(paths=paths, branch=branch, job_id=job_id, requested_by=requested_by)
|
||
else:
|
||
build_no_cache = _as_bool(req.get("build_no_cache") or req.get("no_cache") or False)
|
||
build_pull = _as_bool(req.get("build_pull") or req.get("pull") or False)
|
||
handle_update_job(
|
||
paths=paths,
|
||
branch=branch,
|
||
health_url=health_url,
|
||
job_id=job_id,
|
||
requested_by=requested_by,
|
||
build_no_cache=build_no_cache,
|
||
build_pull=build_pull,
|
||
)
|
||
|
||
last_check_ts = time.time()
|
||
|
||
# 2) 周期性 check
|
||
now = time.time()
|
||
if now - last_check_ts >= check_interval:
|
||
try:
|
||
status = check_updates(paths=paths, branch=branch)
|
||
json_dump_atomic(paths.status_path, status)
|
||
except Exception:
|
||
pass
|
||
last_check_ts = now
|
||
|
||
time.sleep(poll_seconds)
|
||
except KeyboardInterrupt:
|
||
return 0
|
||
except Exception:
|
||
time.sleep(2)
|
||
|
||
|
||
if __name__ == "__main__":
|
||
raise SystemExit(main(sys.argv[1:]))
|