287 lines
8.4 KiB
Python
287 lines
8.4 KiB
Python
import json
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import os
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import signal
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from collections.abc import Generator
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from dataclasses import dataclass
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from pathlib import Path
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from tempfile import NamedTemporaryFile
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from typing import TYPE_CHECKING, Any
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from buildbot.config.builder import BuilderConfig
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from buildbot.plugins import util
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from buildbot.process.buildstep import BuildStep
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from buildbot.process.properties import Interpolate
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from buildbot.reporters.base import ReporterBase
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from buildbot.reporters.github import GitHubStatusPush
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from buildbot.www.auth import AuthBase
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from buildbot.www.avatar import AvatarBase, AvatarGitHub
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from buildbot.www.oauth2 import GitHubAuth
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from twisted.internet import defer, threads
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from twisted.python import log
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from twisted.python.failure import Failure
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if TYPE_CHECKING:
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from buildbot.process.log import StreamLog
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from .common import (
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http_request,
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paginated_github_request,
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slugify_project_name,
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)
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from .projects import GitBackend, GitProject
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from .secrets import read_secret_file
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class ReloadGithubProjects(BuildStep):
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name = "reload_github_projects"
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def __init__(self, token: str, project_cache_file: Path, **kwargs: Any) -> None:
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self.token = token
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self.project_cache_file = project_cache_file
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super().__init__(**kwargs)
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def reload_projects(self) -> None:
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refresh_projects(self.token, self.project_cache_file)
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@defer.inlineCallbacks
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def run(self) -> Generator[Any, object, Any]:
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d = threads.deferToThread(self.reload_projects) # type: ignore[no-untyped-call]
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self.error_msg = ""
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def error_cb(failure: Failure) -> int:
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self.error_msg += failure.getTraceback()
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return util.FAILURE
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d.addCallbacks(lambda _: util.SUCCESS, error_cb)
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res = yield d
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if res == util.SUCCESS:
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# reload the buildbot config
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os.kill(os.getpid(), signal.SIGHUP)
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return util.SUCCESS
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else:
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log: StreamLog = yield self.addLog("log")
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log.addStderr(f"Failed to reload project list: {self.error_msg}")
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return util.FAILURE
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@dataclass
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class GithubConfig:
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oauth_id: str | None
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# TODO unused
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buildbot_user: str
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oauth_secret_name: str = "github-oauth-secret"
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token_secret_name: str = "github-token"
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webhook_secret_name: str = "github-webhook-secret"
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project_cache_file: Path = Path("github-project-cache.json")
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topic: str | None = "build-with-buildbot"
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def token(self) -> str:
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return read_secret_file(self.token_secret_name)
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@dataclass
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class GithubBackend(GitBackend):
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config: GithubConfig
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webhook_secret: str
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def __init__(self, config: GithubConfig) -> None:
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self.config = config
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self.webhook_secret = read_secret_file(self.config.webhook_secret_name)
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def create_reload_builder(self, worker_names: list[str]) -> BuilderConfig:
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"""Updates the flake an opens a PR for it."""
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factory = util.BuildFactory()
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factory.addStep(
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ReloadGithubProjects(self.config.token(), self.config.project_cache_file),
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)
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return util.BuilderConfig(
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name=self.reload_builder_name,
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workernames=worker_names,
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factory=factory,
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)
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def create_reporter(self) -> ReporterBase:
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return GitHubStatusPush(
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token=self.config.token(),
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# Since we dynamically create build steps,
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# we use `virtual_builder_name` in the webinterface
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# so that we distinguish what has beeing build
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context=Interpolate("buildbot/%(prop:status_name)s"),
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)
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def create_change_hook(self) -> dict[str, Any]:
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return {
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"secret": self.webhook_secret,
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"strict": True,
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"token": self.config.token(),
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"github_property_whitelist": "*",
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}
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def create_avatar_method(self) -> AvatarBase | None:
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return AvatarGitHub(token=self.config.token())
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def create_auth(self) -> AuthBase:
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assert self.config.oauth_id is not None, "GitHub OAuth ID is required"
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return GitHubAuth(
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self.config.oauth_id,
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read_secret_file(self.config.oauth_secret_name),
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apiVersion=4,
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)
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def load_projects(self) -> list["GitProject"]:
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if not self.config.project_cache_file.exists():
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return []
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repos: list[dict[str, Any]] = sorted(
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json.loads(self.config.project_cache_file.read_text()),
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key=lambda x: x["full_name"],
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)
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return list(
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filter(
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lambda project: self.config.topic is not None
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and self.config.topic in project.topics,
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[
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GithubProject(self.config, self.webhook_secret, repo)
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for repo in repos
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],
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)
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)
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def are_projects_cached(self) -> bool:
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return self.config.project_cache_file.exists()
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@property
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def type(self) -> str:
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return "github"
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@property
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def pretty_type(self) -> str:
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return "GitHub"
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@property
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def reload_builder_name(self) -> str:
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return "reload-github-projects"
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@property
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def change_hook_name(self) -> str:
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return "github"
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class GithubProject(GitProject):
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config: GithubConfig
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def __init__(
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self, config: GithubConfig, webhook_secret: str, data: dict[str, Any]
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) -> None:
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self.config = config
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self.webhook_secret = webhook_secret
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self.data = data
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def create_project_hook(
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self,
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owner: str,
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repo: str,
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webhook_url: str,
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) -> None:
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hooks = paginated_github_request(
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f"https://api.github.com/repos/{owner}/{repo}/hooks?per_page=100",
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self.config.token(),
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)
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config = dict(
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url=webhook_url + "change_hook/github",
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content_type="json",
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insecure_ssl="0",
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secret=self.webhook_secret,
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)
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data = dict(
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name="web", active=True, events=["push", "pull_request"], config=config
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)
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headers = {
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"Authorization": f"Bearer {self.config.token()}",
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"Accept": "application/vnd.github+json",
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"Content-Type": "application/json",
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"X-GitHub-Api-Version": "2022-11-28",
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}
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for hook in hooks:
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if hook["config"]["url"] == webhook_url + "change_hook/github":
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log.msg(f"hook for {owner}/{repo} already exists")
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return
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http_request(
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f"https://api.github.com/repos/{owner}/{repo}/hooks",
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method="POST",
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headers=headers,
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data=data,
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)
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def get_project_url(self) -> str:
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return f"https://git:%(secret:{self.config.token_secret_name})s@github.com/{self.name}"
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@property
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def pretty_type(self) -> str:
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return "GitHub"
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@property
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def type(self) -> str:
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return "github"
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@property
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def repo(self) -> str:
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return self.data["name"]
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@property
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def owner(self) -> str:
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return self.data["owner"]["login"]
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@property
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def name(self) -> str:
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return self.data["full_name"]
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@property
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def url(self) -> str:
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return self.data["html_url"]
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@property
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def project_id(self) -> str:
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return slugify_project_name(self.data["full_name"])
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@property
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def default_branch(self) -> str:
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return self.data["default_branch"]
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@property
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def topics(self) -> list[str]:
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return self.data["topics"]
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@property
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def belongs_to_org(self) -> bool:
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return self.data["owner"]["type"] == "Organization"
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def refresh_projects(github_token: str, repo_cache_file: Path) -> None:
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repos = []
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for repo in paginated_github_request(
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"https://api.github.com/user/repos?per_page=100",
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github_token,
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):
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if not repo["permissions"]["admin"]:
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name = repo["full_name"]
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log.msg(
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f"skipping {name} because we do not have admin privileges, needed for hook management",
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)
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else:
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repos.append(repo)
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with NamedTemporaryFile("w", delete=False, dir=repo_cache_file.parent) as f:
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path = Path(f.name)
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try:
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f.write(json.dumps(repos))
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f.flush()
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path.rename(repo_cache_file)
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except OSError:
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path.unlink()
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raise
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