#!/usr/bin/env nix-shell #! nix-shell -i python3 -p bundix bundler nix-update nix-universal-prefetch python3 python3Packages.requests python3Packages.click python3Packages.click-log import click import click_log import shutil import tempfile import re import logging import subprocess import os import stat import json import requests from distutils.version import LooseVersion from pathlib import Path from typing import Iterable logger = logging.getLogger(__name__) class DiscourseRepo: version_regex = re.compile(r'^v\d+\.\d+\.\d+$') _latest_commit_sha = None def __init__(self, owner: str = 'discourse', repo: str = 'discourse'): self.owner = owner self.repo = repo @property def tags(self) -> Iterable[str]: r = requests.get(f'https://api.github.com/repos/{self.owner}/{self.repo}/git/refs/tags').json() tags = [x['ref'].replace('refs/tags/', '') for x in r] # filter out versions not matching version_regex versions = list(filter(self.version_regex.match, tags)) # sort, but ignore v for sorting comparisons versions.sort(key=lambda x: LooseVersion(x.replace('v', '')), reverse=True) return versions @property def latest_commit_sha(self) -> str: if self._latest_commit_sha is None: r = requests.get(f'https://api.github.com/repos/{self.owner}/{self.repo}/commits?per_page=1') r.raise_for_status() self._latest_commit_sha = r.json()[0]['sha'] return self._latest_commit_sha @staticmethod def rev2version(tag: str) -> str: """ normalize a tag to a version number. This obviously isn't very smart if we don't pass something that looks like a tag :param tag: the tag to normalize :return: a normalized version number """ # strip v prefix return re.sub(r'^v', '', tag) def get_file(self, filepath, rev): """returns file contents at a given rev :param filepath: the path to the file, relative to the repo root :param rev: the rev to fetch at :return: """ return requests.get(f'https://raw.githubusercontent.com/{self.owner}/{self.repo}/{rev}/{filepath}').text def _call_nix_update(pkg, version): """calls nix-update from nixpkgs root dir""" nixpkgs_path = Path(__file__).parent / '../../../../' return subprocess.check_output(['nix-update', pkg, '--version', version], cwd=nixpkgs_path) def _nix_eval(expr: str): nixpkgs_path = Path(__file__).parent / '../../../../' return json.loads(subprocess.check_output(['nix', 'eval', '--json', f'(with import {nixpkgs_path} {{}}; {expr})'], text=True)) def _get_current_package_version(pkg: str): return _nix_eval(f'{pkg}.version') def _diff_file(filepath: str, old_version: str, new_version: str): repo = DiscourseRepo() current_dir = Path(__file__).parent old = repo.get_file(filepath, 'v' + old_version) new = repo.get_file(filepath, 'v' + new_version) if old == new: click.secho(f'{filepath} is unchanged', fg='green') return with tempfile.NamedTemporaryFile(mode='w') as o, tempfile.NamedTemporaryFile(mode='w') as n: o.write(old), n.write(new) width = shutil.get_terminal_size((80, 20)).columns diff_proc = subprocess.run( ['diff', '--color=always', f'--width={width}', '-y', o.name, n.name], stdout=subprocess.PIPE, cwd=current_dir, text=True ) click.secho(f'Diff for {filepath} ({old_version} -> {new_version}):', fg='bright_blue', bold=True) click.echo(diff_proc.stdout + '\n') return @click_log.simple_verbosity_option(logger) @click.group() def cli(): pass @cli.command() @click.argument('rev', default='latest') @click.option('--reverse/--no-reverse', default=False, help='Print diffs from REV to current.') def print_diffs(rev, reverse): """Print out diffs for files used as templates for the NixOS module. The current package version found in the nixpkgs worktree the script is run from will be used to download the "from" file and REV used to download the "to" file for the diff, unless the '--reverse' flag is specified. REV should be the git rev to find changes in ('vX.Y.Z') or 'latest'; defaults to 'latest'. """ if rev == 'latest': repo = DiscourseRepo() rev = repo.tags[0] old_version = _get_current_package_version('discourse') new_version = DiscourseRepo.rev2version(rev) if reverse: old_version, new_version = new_version, old_version for f in ['config/nginx.sample.conf', 'config/discourse_defaults.conf']: _diff_file(f, old_version, new_version) @cli.command() @click.argument('rev', default='latest') def update(rev): """Update gem files and version. REV should be the git rev to update to ('vX.Y.Z') or 'latest'; defaults to 'latest'. """ repo = DiscourseRepo() if rev == 'latest': rev = repo.tags[0] logger.debug(f"Using rev {rev}") version = repo.rev2version(rev) logger.debug(f"Using version {version}") rubyenv_dir = Path(__file__).parent / "rubyEnv" for fn in ['Gemfile.lock', 'Gemfile']: with open(rubyenv_dir / fn, 'w') as f: f.write(repo.get_file(fn, rev)) subprocess.check_output(['bundle', 'lock'], cwd=rubyenv_dir) for platform in ['arm64-darwin-20', 'x86_64-darwin-18', 'x86_64-darwin-19', 'x86_64-darwin-20', 'x86_64-linux']: subprocess.check_output(['bundle', 'lock', '--remove-platform', platform], cwd=rubyenv_dir) subprocess.check_output(['bundix'], cwd=rubyenv_dir) _call_nix_update('discourse', repo.rev2version(rev)) @cli.command() def update_plugins(): """Update plugins to their latest revision. """ plugins = [ {'name': 'discourse-calendar'}, {'name': 'discourse-canned-replies'}, {'name': 'discourse-checklist'}, {'name': 'discourse-data-explorer'}, {'name': 'discourse-github'}, {'name': 'discourse-math'}, {'name': 'discourse-migratepassword', 'owner': 'discoursehosting'}, {'name': 'discourse-solved'}, {'name': 'discourse-spoiler-alert'}, {'name': 'discourse-yearly-review'}, ] for plugin in plugins: fetcher = plugin.get('fetcher') or "fetchFromGitHub" owner = plugin.get('owner') or "discourse" name = plugin.get('name') repo_name = plugin.get('repo_name') or name repo = DiscourseRepo(owner=owner, repo=repo_name) prev_commit_sha = _nix_eval(f'discourse.plugins.{name}.src.rev') if prev_commit_sha == repo.latest_commit_sha: click.echo(f'Plugin {name} is already at the latest revision') continue filename = _nix_eval(f'builtins.unsafeGetAttrPos "src" discourse.plugins.{name}')['file'] prev_hash = _nix_eval(f'discourse.plugins.{name}.src.outputHash') new_hash = subprocess.check_output([ 'nix-universal-prefetch', fetcher, '--owner', owner, '--repo', repo_name, '--rev', repo.latest_commit_sha, ], text=True).strip("\n") click.echo(f"Update {name}, {prev_commit_sha} -> {repo.latest_commit_sha} in {filename}") with open(filename, 'r+') as f: content = f.read() content = content.replace(prev_commit_sha, repo.latest_commit_sha) content = content.replace(prev_hash, new_hash) f.seek(0) f.write(content) f.truncate() rubyenv_dir = Path(filename).parent gemfile = rubyenv_dir / "Gemfile" gemfile_text = '' for line in repo.get_file('plugin.rb', repo.latest_commit_sha).splitlines(): if 'gem ' in line: gemfile_text = gemfile_text + line + os.linesep if len(gemfile_text) > 0: if os.path.isfile(gemfile): os.remove(gemfile) subprocess.check_output(['bundle', 'init'], cwd=rubyenv_dir) os.chmod(gemfile, stat.S_IREAD | stat.S_IWRITE | stat.S_IRGRP | stat.S_IROTH) with open(gemfile, 'a') as f: f.write(gemfile_text) subprocess.check_output(['bundle', 'lock', '--update'], cwd=rubyenv_dir) subprocess.check_output(['bundix'], cwd=rubyenv_dir) if __name__ == '__main__': cli()