host
25d9b3d938
- github_app：纯标准库 RS256 签 App JWT（PKCS#1/PKCS#8）， 换 installation token（现换现用、不缓存），按仓库名查安装 记录，任一步失败回落 None - pr：app_token 路径 push 走 credential helper（token 只进 子进程环境），建 PR 走 REST API（读 default_branch 当 base）； 不传 token 时 gh 路径不变 - server：/pr 端点按项目 repo_url 解析仓库名、现换 token， 响应加 auth_via=app|pat，换失败回落 PAT 不报错 - 测试：JWT/换 token/解析 9 个、pr App 路径 6 个、端点级 App 与 PAT 回落 2 个
337 lines
14 KiB
Python
337 lines
14 KiB
Python
"""云端自动 PR：默认关闭、显式触发、缺条件时跳过不失败。
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零第三方依赖，只用 Python 标准库；不改 host.py 的任务逻辑，
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只复用它的规则：host 任务名 = cloud 任务 id 经安全字符过滤
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（见 cloud/sandbox.py LocalExecutor._host_name），分支名是
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host/<host 任务名>，worktree 在 <仓库根>/work/host-worktrees/
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<host 任务名>。
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触发规则（按顺序，任一步跳过即返回，不推、不改任务状态）：
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1. 任务所属项目的 auto_pr 不为 1 -> pr_skipped, auto_pr_disabled
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2. 本地没有对应 worktree -> pr_skipped, no_worktree
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3. worktree 里没有 git remote origin -> pr_skipped, no_remote
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4. 本机没有 gh 二进制 -> pr_skipped, no_gh
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5. gh 未登录（gh auth status 非零） -> pr_skipped,
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gh_not_authenticated
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只有以上全过才提交 worktree 改动、push 分支 + gh pr create；
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push 或 pr create 失败时抛 PrStepError（调用方据此返回 502），
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任务状态保持 merged 不变，绝不把任务标 failed。
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提交规则（create_task_pr 在全部跳过检查通过后、push 之前做）：
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worktree 必须正好在分支 host/<任务名> 上，否则直接失败，
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绝不在别的分支上提交；先清掉 worktree 内的 __pycache__ /
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*.pyc（与 host.py merge 同规则，只动 worktree，不动主仓），
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再 git add -A + commit；nothing to commit 时直接继续。
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身份用环境里的 git 身份（与 host.py merge 一致），缺身份时
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回退到 cloud/cloud@local 再试一次。
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顺序约束（与云端 merge 接口配套）：任务 completed -> 调
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POST /tasks/{id}/merge 改状态 -> 调 POST /tasks/{id}/pr 推分支
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建 PR -> 再在 GitHub 上合 PR 或本地 host.py merge。本地
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host.py merge 成功后会删分支和 worktree，此后调 PR 会跳过
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no_worktree，所以 PR 必须在本地 git merge 之前做。
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worker 不自动推：自动 PR 只由显式调 POST /tasks/{id}/pr
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触发。默认自动推会把测试任务也推到远端，本模块不做。
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本模块不存、不打任何密钥：gh 的登录凭证由 gh 自己管
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（gh auth login），push/pr 的命令与错误文本里不出现任何
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token；错误文本只含 git/gh 的原文摘要，不含远端 URL 里的
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userinfo（若 remote URL 含 userinfo，摘要里把它抹掉）。
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App-token 路径（cloud/github_app.py 的 resolve_app_token 供
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token）：调用方传 app_token 时，跳过 gh 二进制与 gh 登录
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检查（App 路径不需要 gh）；push 走 git credential helper，
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token 只放进子进程环境变量 GIT_TOKEN，不进命令行参数、不
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进文件，helper 命令里只有变量名；建 PR 走 GitHub REST API
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（先读仓库 default_branch 再建，base 不猜 main）。没传
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app_token 时走原来的 gh 路径，两条路不互相干扰；App 没装
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在该仓库时调用方不传 token、自动回落 PAT。
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"""
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import os
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import re
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import shutil
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import subprocess
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_SKIP_AUTO_PR = "auto_pr_disabled"
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_SKIP_NO_WORKTREE = "no_worktree"
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_SKIP_NO_REMOTE = "no_remote"
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_SKIP_NO_GH = "no_gh"
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_SKIP_NOT_AUTHED = "gh_not_authenticated"
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class PrSkipped(Exception):
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"""跳过：reason 见上列常量，调用方返回 200 + pr_skipped。"""
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def __init__(self, reason):
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super().__init__(reason)
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self.reason = reason
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class PrStepError(Exception):
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"""push / pr create 哪一步失败：step 为 push 或 pr_create。"""
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def __init__(self, step, message):
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super().__init__(message)
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self.step = step
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self.message = message
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def host_name_for_task(task_id):
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"""cloud 任务 id -> host 任务名（与 sandbox._host_name 同规则）。"""
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return re.sub(r"[^A-Za-z0-9_.-]", "-", str(task_id))
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def default_worktrees_root():
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"""默认 worktree 根：<仓库根>/work/host-worktrees。"""
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here = os.path.dirname(os.path.abspath(__file__))
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return os.path.join(os.path.dirname(here), "work", "host-worktrees")
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def resolve_worktrees_root(override=None):
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"""worktree 根优先级：显式参数 > 环境变量 > 默认。"""
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if override:
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return override
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return os.environ.get("CLOUD_HOST_WORKTREES_DIR") or \
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default_worktrees_root()
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def _scrub_url(text):
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"""抹掉 URL 里的 userinfo（https://user:pass@host -> https://host），
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防止错误文本把凭证带出去。"""
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if not text:
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return text
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return re.sub(r"(https?://)[^/@\s]+@", r"\1", text)
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def _run(cmd, cwd=None, runner=None, env=None):
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"""命令唯一入口：runner 供单测注入，返回带 returncode/stdout/
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stderr 的对象；真实路径走 subprocess。env 只在真实路径生效
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（与进程环境合并），注入的 runner 不收 env——token 绝不进
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假 runner 记录的命令，也不进真实路径的命令行参数。"""
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if runner is not None:
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return runner(cmd, cwd)
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full_env = None
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if env:
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full_env = dict(os.environ)
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full_env.update(env)
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return subprocess.run(cmd, cwd=cwd, capture_output=True, text=True,
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env=full_env)
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_GITHUB_REMOTE_RE = re.compile(
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r"^(?:https?://(?:[^/@\s]+@)?github\.com/"
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r"|git@github\.com:|ssh://git@github\.com/)"
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r"([^/\s]+)/([^/\s]+?)(?:\.git)?/?$")
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def parse_git_remote_owner_repo(url):
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"""解析 git remote URL -> (owner, repo)，非 github.com 仓库
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或解析失败返回 None（调用方据此回落 PAT，不报错）。"""
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if not url or not isinstance(url, str):
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return None
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m = _GITHUB_REMOTE_RE.match(url.strip())
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if not m:
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return None
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return m.group(1), m.group(2)
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def _default_github_api(method, url, token, payload):
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"""默认 GitHub API 客户端：复用 github_app 的 urllib 实现
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（返回 (status, dict)；懒 import，避免模块导入环）。"""
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from cloud.github_app import _github_api_request
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return _github_api_request(method, url, token, payload, None)
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def _create_pr_via_api(owner, repo, branch, title, body, token,
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github_api):
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"""用 installation token 走 REST API 建 PR：先读仓库
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default_branch 当 base（不猜 main），再 POST /pulls。
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成功返回 {pr_url, pr_number, branch}，失败抛 PrStepError。"""
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api = github_api or _default_github_api
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status, repo_info = api(
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"GET", "https://api.github.com/repos/%s/%s" % (owner, repo),
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token, None)
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if status != 200:
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raise PrStepError(
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"pr_create",
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"GitHub API 读仓库失败：%s" % (repo_info.get("message"),))
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base = repo_info.get("default_branch") or "main"
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status, data = api(
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"POST", "https://api.github.com/repos/%s/%s/pulls" % (owner, repo),
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token, {"title": title, "head": branch, "base": base,
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"body": body})
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if status not in (200, 201) or not data.get("html_url"):
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raise PrStepError(
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"pr_create",
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"GitHub API 建 PR 失败：%s" % (data.get("message"),))
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return {"pr_url": data["html_url"], "pr_number": data.get("number"),
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"branch": branch}
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def _git_remote_url(worktree_dir, git_runner=None):
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r = _run(["git", "-C", worktree_dir, "remote", "get-url", "origin"],
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cwd=worktree_dir, runner=git_runner)
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url = (getattr(r, "stdout", "") or "").strip()
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if getattr(r, "returncode", 1) != 0 or not url:
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return None
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return url
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def check_pr_ready(worktree_dir, git_runner=None, gh_which=None,
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gh_runner=None, app_token=None):
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"""按顺序做跳过检查，全过返回 (worktree_dir, branch)；任一步
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不过抛 PrSkipped。branch 由调用方按 host 任务名算好传进来
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的是 worktree 检查——本函数只查 worktree 与 remote/gh/登录，
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分支名由 create_task_pr 组装。传了 app_token 时跳过 gh
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二进制与 gh 登录检查（App 路径不需要 gh）。"""
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if not os.path.isdir(worktree_dir):
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raise PrSkipped(_SKIP_NO_WORKTREE)
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if _git_remote_url(worktree_dir, git_runner) is None:
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raise PrSkipped(_SKIP_NO_REMOTE)
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if app_token:
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return True
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gh_bin = gh_which if gh_which is not None else shutil.which("gh")
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if not gh_bin:
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raise PrSkipped(_SKIP_NO_GH)
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r = _run(["gh", "auth", "status"], cwd=worktree_dir, runner=gh_runner)
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if getattr(r, "returncode", 1) != 0:
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raise PrSkipped(_SKIP_NOT_AUTHED)
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return True
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def _commit_worktree_changes(worktree_dir, branch, task_id,
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git_runner=None):
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"""push 之前把 worktree 的改动提交到分支上。
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顺序：先确认 worktree 正好在目标分支上（不在就直接失败，
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绝不在别的分支上提交，commit 到 main 里就污染主分支了）；
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再清掉 worktree 内的 __pycache__ / *.pyc（可再生的缓存，
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与 host.py merge 同规则）；再 git add -A + commit。
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nothing to commit 时直接返回；缺 git 身份时回退到
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cloud/cloud@local 再试一次；其它失败抛 PrStepError(commit)。
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"""
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cur = _run(["git", "-C", worktree_dir, "branch", "--show-current"],
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cwd=worktree_dir, runner=git_runner)
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if (getattr(cur, "stdout", "") or "").strip() != branch:
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raise PrStepError(
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"commit", "worktree 不在分支 %s 上，拒绝提交" % branch)
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for root, dirs, files in os.walk(worktree_dir):
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if ".git" in dirs:
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dirs.remove(".git")
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if "__pycache__" in dirs:
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shutil.rmtree(os.path.join(root, "__pycache__"),
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ignore_errors=True)
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dirs.remove("__pycache__")
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for fn in files:
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if fn.endswith(".pyc"):
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try:
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os.remove(os.path.join(root, fn))
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except OSError:
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pass
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add = _run(["git", "-C", worktree_dir, "add", "-A"],
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cwd=worktree_dir, runner=git_runner)
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if getattr(add, "returncode", 1) != 0:
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raise PrStepError(
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"commit", "git add 失败：%s" % (
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(getattr(add, "stderr", "") or "")
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or (getattr(add, "stdout", "") or "")))
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msg = "cloud: %s" % task_id
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c = _run(["git", "-C", worktree_dir, "commit", "-m", msg],
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cwd=worktree_dir, runner=git_runner)
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if getattr(c, "returncode", 1) == 0:
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return
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out = ((getattr(c, "stdout", "") or "")
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+ (getattr(c, "stderr", "") or ""))
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if "nothing to commit" in out:
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return
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if ("tell me who you are" in out or "user.name" in out
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or "user.email" in out):
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c2 = _run(["git", "-C", worktree_dir,
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"-c", "user.name=cloud", "-c", "user.email=cloud@local",
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"commit", "-m", msg],
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cwd=worktree_dir, runner=git_runner)
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if getattr(c2, "returncode", 1) == 0:
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return
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out2 = ((getattr(c2, "stdout", "") or "")
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+ (getattr(c2, "stderr", "") or ""))
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if "nothing to commit" in out2:
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return
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raise PrStepError(
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"commit", "git commit 失败（已试 cloud 身份）：%s" % out2[:300])
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raise PrStepError("commit", "git commit 失败：%s" % out[:300])
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def create_task_pr(task_id, auto_pr, worktrees_root=None,
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git_runner=None, gh_runner=None, gh_which=None,
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app_token=None, github_api=None):
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"""给一个已 merged 的云端任务建 PR。
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auto_pr 不为 1 时直接抛 PrSkipped(auto_pr_disabled)，调用方
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在查 worktree 之前就应先查项目 auto_pr——本函数也再查一次，
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防止直接调用者漏查。成功返回 {pr_url, pr_number, branch}。
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全部跳过检查通过后，先把 worktree 改动提交到分支再 push，
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否则未提交的改动进不了 PR。
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传了 app_token 时走 App 路径：push 用 credential helper
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（token 只进子进程环境，不进参数），建 PR 走 GitHub API；
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不传时走原来的 gh 路径。
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"""
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if auto_pr != 1:
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raise PrSkipped(_SKIP_AUTO_PR)
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host_name = host_name_for_task(task_id)
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worktree_dir = os.path.join(
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resolve_worktrees_root(worktrees_root), host_name)
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branch = "host/" + host_name
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check_pr_ready(worktree_dir, git_runner=git_runner,
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gh_which=gh_which, gh_runner=gh_runner,
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app_token=app_token)
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_commit_worktree_changes(worktree_dir, branch, task_id,
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git_runner=git_runner)
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title = "cloud: %s" % task_id
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body = "cloud 任务 %s 的自动 PR。" % task_id
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if app_token:
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remote_url = _git_remote_url(worktree_dir, git_runner)
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owner_repo = parse_git_remote_owner_repo(remote_url)
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if owner_repo is None:
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raise PrStepError(
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"push",
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"worktree remote 不是 github.com 仓库，App token 无法"
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" push：%s" % _scrub_url(remote_url))
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push = _run(
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["git", "-C", worktree_dir, "-c",
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"credential.helper=!f() { echo username=x-access-token;"
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" echo password=$GIT_TOKEN; }; f",
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"push", "origin", branch],
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cwd=worktree_dir, runner=git_runner,
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env={"GIT_TOKEN": app_token})
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if getattr(push, "returncode", 1) != 0:
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raise PrStepError(
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"push", "git push origin %s 失败：%s" % (
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branch, _scrub_url(
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(getattr(push, "stderr", "") or "")
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or (getattr(push, "stdout", "") or ""))))
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return _create_pr_via_api(owner_repo[0], owner_repo[1], branch,
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title, body, app_token, github_api)
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push = _run(["git", "-C", worktree_dir, "push", "origin", branch],
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cwd=worktree_dir, runner=git_runner)
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if getattr(push, "returncode", 1) != 0:
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raise PrStepError(
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"push", "git push origin %s 失败：%s" % (
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branch, _scrub_url(
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(getattr(push, "stderr", "") or "")
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or (getattr(push, "stdout", "") or ""))))
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r = _run(["gh", "pr", "create", "--title", title,
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"--body", body,
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"--head", branch],
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cwd=worktree_dir, runner=gh_runner)
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out = (getattr(r, "stdout", "") or "").strip()
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if getattr(r, "returncode", 1) != 0 or not out:
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raise PrStepError(
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"pr_create", "gh pr create 失败：%s" % _scrub_url(
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(getattr(r, "stderr", "") or "") or out))
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pr_url = out.splitlines()[0].strip()
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m = re.search(r"/(\d+)\s*$", pr_url)
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pr_number = int(m.group(1)) if m else None
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return {"pr_url": pr_url, "pr_number": pr_number, "branch": branch}
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