436 lines
15 KiB
Python
Executable file
436 lines
15 KiB
Python
Executable file
#!/usr/bin/env nix-shell
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#! nix-shell -i python3 -p bundix bundler nix-update nix-universal-prefetch python3 python3Packages.requests python3Packages.click python3Packages.click-log prefetch-yarn-deps
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from __future__ import annotations
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import click
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import click_log
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import shutil
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import tempfile
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import re
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import logging
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import subprocess
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import os
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import stat
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import json
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import requests
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import textwrap
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from functools import total_ordering
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from distutils.version import LooseVersion
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from itertools import zip_longest
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from pathlib import Path
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from typing import Union, Iterable
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logger = logging.getLogger(__name__)
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@total_ordering
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class DiscourseVersion:
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"""Represents a Discourse style version number and git tag.
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This takes either a tag or version string as input and
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extrapolates the other. Sorting is implemented to work as expected
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in regard to A.B.C.betaD version numbers - 2.0.0.beta1 is
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considered lower than 2.0.0.
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"""
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tag: str = ""
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version: str = ""
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split_version: Iterable[Union[None, int, str]] = []
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def __init__(self, version: str):
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"""Take either a tag or version number, calculate the other."""
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if version.startswith('v'):
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self.tag = version
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self.version = version.lstrip('v')
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else:
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self.tag = 'v' + version
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self.version = version
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self.split_version = LooseVersion(self.version).version
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def __eq__(self, other: DiscourseVersion):
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"""Versions are equal when their individual parts are."""
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return self.split_version == other.split_version
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def __gt__(self, other: DiscourseVersion):
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"""Check if this version is greater than the other.
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Goes through the parts of the version numbers from most to
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least significant, only continuing on to the next if the
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numbers are equal and no decision can be made. If one version
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ends in 'betaX' and the other doesn't, all else being equal,
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the one without 'betaX' is considered greater, since it's the
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release version.
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"""
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for (this_ver, other_ver) in zip_longest(self.split_version, other.split_version):
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if this_ver == other_ver:
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continue
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if type(this_ver) is int and type(other_ver) is int:
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return this_ver > other_ver
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elif 'beta' in [this_ver, other_ver]:
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# release version (None) is greater than beta
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return this_ver is None
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else:
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return False
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class DiscourseRepo:
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version_regex = re.compile(r'^v\d+\.\d+\.\d+(\.beta\d+)?$')
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_latest_commit_sha = None
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def __init__(self, owner: str = 'discourse', repo: str = 'discourse'):
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self.owner = owner
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self.repo = repo
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@property
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def versions(self) -> Iterable[str]:
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r = requests.get(f'https://api.github.com/repos/{self.owner}/{self.repo}/git/refs/tags').json()
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tags = [x['ref'].replace('refs/tags/', '') for x in r]
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# filter out versions not matching version_regex
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versions = filter(self.version_regex.match, tags)
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versions = [DiscourseVersion(x) for x in versions]
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versions.sort(reverse=True)
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return versions
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@property
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def latest_commit_sha(self) -> str:
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if self._latest_commit_sha is None:
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r = requests.get(f'https://api.github.com/repos/{self.owner}/{self.repo}/commits?per_page=1')
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r.raise_for_status()
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self._latest_commit_sha = r.json()[0]['sha']
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return self._latest_commit_sha
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def get_yarn_lock_hash(self, rev: str):
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yarnLockText = self.get_file('app/assets/javascripts/yarn.lock', rev)
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with tempfile.NamedTemporaryFile(mode='w') as lockFile:
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lockFile.write(yarnLockText)
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return subprocess.check_output(['prefetch-yarn-deps', lockFile.name]).decode('utf-8').strip()
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def get_file(self, filepath, rev):
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"""Return file contents at a given rev.
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:param str filepath: the path to the file, relative to the repo root
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:param str rev: the rev to fetch at :return:
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"""
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r = requests.get(f'https://raw.githubusercontent.com/{self.owner}/{self.repo}/{rev}/{filepath}')
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r.raise_for_status()
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return r.text
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def _call_nix_update(pkg, version):
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"""Call nix-update from nixpkgs root dir."""
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nixpkgs_path = Path(__file__).parent / '../../../../'
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return subprocess.check_output(['nix-update', pkg, '--version', version], cwd=nixpkgs_path)
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def _nix_eval(expr: str):
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nixpkgs_path = Path(__file__).parent / '../../../../'
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try:
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output = subprocess.check_output(['nix-instantiate', '--strict', '--json', '--eval', '-E', f'(with import {nixpkgs_path} {{}}; {expr})'], text=True)
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except subprocess.CalledProcessError:
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return None
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return json.loads(output)
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def _get_current_package_version(pkg: str):
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return _nix_eval(f'{pkg}.version')
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def _diff_file(filepath: str, old_version: DiscourseVersion, new_version: DiscourseVersion):
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repo = DiscourseRepo()
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current_dir = Path(__file__).parent
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old = repo.get_file(filepath, old_version.tag)
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new = repo.get_file(filepath, new_version.tag)
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if old == new:
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click.secho(f'{filepath} is unchanged', fg='green')
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return
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with tempfile.NamedTemporaryFile(mode='w') as o, tempfile.NamedTemporaryFile(mode='w') as n:
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o.write(old), n.write(new)
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width = shutil.get_terminal_size((80, 20)).columns
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diff_proc = subprocess.run(
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['diff', '--color=always', f'--width={width}', '-y', o.name, n.name],
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stdout=subprocess.PIPE,
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cwd=current_dir,
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text=True
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)
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click.secho(f'Diff for {filepath} ({old_version.version} -> {new_version.version}):', fg='bright_blue', bold=True)
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click.echo(diff_proc.stdout + '\n')
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return
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def _remove_platforms(rubyenv_dir: Path):
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for platform in ['arm64-darwin-20', 'x86_64-darwin-18',
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'x86_64-darwin-19', 'x86_64-darwin-20',
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'x86_64-linux', 'aarch64-linux']:
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with open(rubyenv_dir / 'Gemfile.lock', 'r') as f:
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for line in f:
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if platform in line:
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subprocess.check_output(
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['bundle', 'lock', '--remove-platform', platform], cwd=rubyenv_dir)
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break
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@click_log.simple_verbosity_option(logger)
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@click.group()
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def cli():
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pass
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@cli.command()
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@click.argument('rev', default='latest')
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@click.option('--reverse/--no-reverse', default=False, help='Print diffs from REV to current.')
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def print_diffs(rev, reverse):
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"""Print out diffs for files used as templates for the NixOS module.
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The current package version found in the nixpkgs worktree the
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script is run from will be used to download the "from" file and
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REV used to download the "to" file for the diff, unless the
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'--reverse' flag is specified.
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REV should be the git rev to find changes in ('vX.Y.Z') or
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'latest'; defaults to 'latest'.
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"""
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if rev == 'latest':
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repo = DiscourseRepo()
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rev = repo.versions[0].tag
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old_version = DiscourseVersion(_get_current_package_version('discourse'))
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new_version = DiscourseVersion(rev)
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if reverse:
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old_version, new_version = new_version, old_version
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for f in ['config/nginx.sample.conf', 'config/discourse_defaults.conf']:
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_diff_file(f, old_version, new_version)
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@cli.command()
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@click.argument('rev', default='latest')
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def update(rev):
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"""Update gem files and version.
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REV: the git rev to update to ('vX.Y.Z[.betaA]') or
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'latest'; defaults to 'latest'.
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"""
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repo = DiscourseRepo()
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if rev == 'latest':
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version = repo.versions[0]
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else:
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version = DiscourseVersion(rev)
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logger.debug(f"Using rev {version.tag}")
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logger.debug(f"Using version {version.version}")
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rubyenv_dir = Path(__file__).parent / "rubyEnv"
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for fn in ['Gemfile.lock', 'Gemfile']:
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with open(rubyenv_dir / fn, 'w') as f:
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f.write(repo.get_file(fn, version.tag))
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subprocess.check_output(['bundle', 'lock'], cwd=rubyenv_dir)
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_remove_platforms(rubyenv_dir)
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subprocess.check_output(['bundix'], cwd=rubyenv_dir)
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_call_nix_update('discourse', version.version)
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old_yarn_hash = _nix_eval('discourse.assets.yarnOfflineCache.outputHash')
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new_yarn_hash = repo.get_yarn_lock_hash(version.tag)
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click.echo(f"Updating yarn lock hash, {old_yarn_hash} -> {new_yarn_hash}")
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with open(Path(__file__).parent / "default.nix", 'r+') as f:
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content = f.read()
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content = content.replace(old_yarn_hash, new_yarn_hash)
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f.seek(0)
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f.write(content)
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f.truncate()
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@cli.command()
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@click.argument('rev', default='latest')
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def update_mail_receiver(rev):
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"""Update discourse-mail-receiver.
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REV: the git rev to update to ('vX.Y.Z') or 'latest'; defaults to
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'latest'.
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"""
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repo = DiscourseRepo(repo="mail-receiver")
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if rev == 'latest':
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version = repo.versions[0]
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else:
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version = DiscourseVersion(rev)
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_call_nix_update('discourse-mail-receiver', version.version)
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@cli.command()
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def update_plugins():
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"""Update plugins to their latest revision."""
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plugins = [
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{'name': 'discourse-assign'},
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{'name': 'discourse-calendar'},
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{'name': 'discourse-canned-replies'},
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{'name': 'discourse-chat-integration'},
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{'name': 'discourse-checklist'},
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{'name': 'discourse-data-explorer'},
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{'name': 'discourse-docs'},
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{'name': 'discourse-github'},
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{'name': 'discourse-ldap-auth', 'owner': 'jonmbake'},
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{'name': 'discourse-math'},
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{'name': 'discourse-migratepassword', 'owner': 'discoursehosting'},
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{'name': 'discourse-prometheus'},
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{'name': 'discourse-openid-connect'},
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{'name': 'discourse-saved-searches'},
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{'name': 'discourse-solved'},
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{'name': 'discourse-spoiler-alert'},
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{'name': 'discourse-voting'},
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{'name': 'discourse-yearly-review'},
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]
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for plugin in plugins:
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fetcher = plugin.get('fetcher') or "fetchFromGitHub"
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owner = plugin.get('owner') or "discourse"
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name = plugin.get('name')
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repo_name = plugin.get('repo_name') or name
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repo = DiscourseRepo(owner=owner, repo=repo_name)
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# implement the plugin pinning algorithm laid out here:
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# https://meta.discourse.org/t/pinning-plugin-and-theme-versions-for-older-discourse-installs/156971
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# this makes sure we don't upgrade plugins to revisions that
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# are incompatible with the packaged Discourse version
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try:
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compatibility_spec = repo.get_file('.discourse-compatibility', repo.latest_commit_sha)
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versions = [(DiscourseVersion(discourse_version), plugin_rev.strip(' '))
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for [discourse_version, plugin_rev]
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in [line.split(':')
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for line
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in compatibility_spec.splitlines()]]
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discourse_version = DiscourseVersion(_get_current_package_version('discourse'))
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versions = list(filter(lambda ver: ver[0] >= discourse_version, versions))
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if versions == []:
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rev = repo.latest_commit_sha
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else:
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rev = versions[0][1]
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print(rev)
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except requests.exceptions.HTTPError:
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rev = repo.latest_commit_sha
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filename = _nix_eval(f'builtins.unsafeGetAttrPos "src" discourse.plugins.{name}')
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if filename is None:
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filename = Path(__file__).parent / 'plugins' / name / 'default.nix'
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filename.parent.mkdir()
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has_ruby_deps = False
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for line in repo.get_file('plugin.rb', rev).splitlines():
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if 'gem ' in line:
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has_ruby_deps = True
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break
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with open(filename, 'w') as f:
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f.write(textwrap.dedent(f"""
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{{ lib, mkDiscoursePlugin, fetchFromGitHub }}:
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mkDiscoursePlugin {{
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name = "{name}";"""[1:] + ("""
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bundlerEnvArgs.gemdir = ./.;""" if has_ruby_deps else "") + f"""
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src = {fetcher} {{
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owner = "{owner}";
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repo = "{repo_name}";
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rev = "replace-with-git-rev";
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sha256 = "replace-with-sha256";
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}};
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meta = with lib; {{
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homepage = "";
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maintainers = with maintainers; [ ];
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license = licenses.mit; # change to the correct license!
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description = "";
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}};
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}}"""))
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all_plugins_filename = Path(__file__).parent / 'plugins' / 'all-plugins.nix'
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with open(all_plugins_filename, 'r+') as f:
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content = f.read()
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pos = -1
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while content[pos] != '}':
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pos -= 1
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content = content[:pos] + f' {name} = callPackage ./{name} {{}};' + os.linesep + content[pos:]
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f.seek(0)
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f.write(content)
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f.truncate()
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else:
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filename = filename['file']
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prev_commit_sha = _nix_eval(f'discourse.plugins.{name}.src.rev')
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if prev_commit_sha == rev:
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click.echo(f'Plugin {name} is already at the latest revision')
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continue
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prev_hash = _nix_eval(f'discourse.plugins.{name}.src.outputHash')
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new_hash = subprocess.check_output([
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'nix-universal-prefetch', fetcher,
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'--owner', owner,
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'--repo', repo_name,
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'--rev', rev,
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], text=True).strip("\n")
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click.echo(f"Update {name}, {prev_commit_sha} -> {rev} in {filename}")
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with open(filename, 'r+') as f:
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content = f.read()
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content = content.replace(prev_commit_sha, rev)
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content = content.replace(prev_hash, new_hash)
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f.seek(0)
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f.write(content)
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f.truncate()
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rubyenv_dir = Path(filename).parent
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gemfile = rubyenv_dir / "Gemfile"
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version_file_regex = re.compile(r'.*File\.expand_path\("\.\./(.*)", __FILE__\)')
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gemfile_text = ''
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for line in repo.get_file('plugin.rb', rev).splitlines():
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if 'gem ' in line:
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gemfile_text = gemfile_text + line + os.linesep
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version_file_match = version_file_regex.match(line)
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if version_file_match is not None:
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filename = version_file_match.groups()[0]
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content = repo.get_file(filename, rev)
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with open(rubyenv_dir / filename, 'w') as f:
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f.write(content)
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if len(gemfile_text) > 0:
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if os.path.isfile(gemfile):
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os.remove(gemfile)
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subprocess.check_output(['bundle', 'init'], cwd=rubyenv_dir)
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os.chmod(gemfile, stat.S_IREAD | stat.S_IWRITE | stat.S_IRGRP | stat.S_IROTH)
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with open(gemfile, 'a') as f:
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f.write(gemfile_text)
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subprocess.check_output(['bundle', 'lock', '--add-platform', 'ruby'], cwd=rubyenv_dir)
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subprocess.check_output(['bundle', 'lock', '--update'], cwd=rubyenv_dir)
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_remove_platforms(rubyenv_dir)
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subprocess.check_output(['bundix'], cwd=rubyenv_dir)
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if __name__ == '__main__':
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cli()
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