mirror of
https://github.com/github/codeql-action.git
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227 lines
8.1 KiB
Python
227 lines
8.1 KiB
Python
import datetime
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from github import Github
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import random
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import requests
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import subprocess
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import sys
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import json
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import datetime
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import os
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EMPTY_CHANGELOG = """# CodeQL Action and CodeQL Runner Changelog
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## [UNRELEASED]
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"""
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# The branch being merged from.
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# This is the one that contains day-to-day development work.
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MAIN_BRANCH = 'main'
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# The branch being merged into.
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# This is the release branch that users reference.
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LATEST_RELEASE_BRANCH = 'v1'
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# Name of the remote
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ORIGIN = 'origin'
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# Runs git with the given args and returns the stdout.
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# Raises an error if git does not exit successfully.
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def run_git(*args):
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cmd = ['git', *args]
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p = subprocess.run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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if (p.returncode != 0):
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raise Exception('Call to ' + ' '.join(cmd) + ' exited with code ' + str(p.returncode) + ' stderr:' + p.stderr.decode('ascii'))
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return p.stdout.decode('ascii')
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# Returns true if the given branch exists on the origin remote
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def branch_exists_on_remote(branch_name):
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return run_git('ls-remote', '--heads', ORIGIN, branch_name).strip() != ''
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# Opens a PR from the given branch to the release branch
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def open_pr(repo, all_commits, short_main_sha, branch_name):
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# Sort the commits into the pull requests that introduced them,
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# and any commits that don't have a pull request
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pull_requests = []
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commits_without_pull_requests = []
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for commit in all_commits:
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pr = get_pr_for_commit(repo, commit)
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if pr is None:
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commits_without_pull_requests.append(commit)
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elif not any(p for p in pull_requests if p.number == pr.number):
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pull_requests.append(pr)
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print('Found ' + str(len(pull_requests)) + ' pull requests')
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print('Found ' + str(len(commits_without_pull_requests)) + ' commits not in a pull request')
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# Sort PRs and commits by age
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pull_requests = sorted(pull_requests, key=lambda pr: pr.number)
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commits_without_pull_requests = sorted(commits_without_pull_requests, key=lambda c: c.commit.author.date)
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# Start constructing the body text
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body = []
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body.append('Merging ' + short_main_sha + ' into ' + LATEST_RELEASE_BRANCH)
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conductor = get_conductor(repo, pull_requests, commits_without_pull_requests)
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body.append('')
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body.append('Conductor for this PR is @' + conductor)
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# List all PRs merged
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if len(pull_requests) > 0:
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body.append('')
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body.append('Contains the following pull requests:')
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for pr in pull_requests:
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merger = get_merger_of_pr(repo, pr)
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body.append('- #' + str(pr.number) + ' - ' + pr.title +' (@' + merger + ')')
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# List all commits not part of a PR
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if len(commits_without_pull_requests) > 0:
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body.append('')
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body.append('Contains the following commits not from a pull request:')
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for commit in commits_without_pull_requests:
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body.append('- ' + commit.sha + ' - ' + get_truncated_commit_message(commit) + ' (@' + commit.author.login + ')')
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body.append('')
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body.append('Please review the following:')
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body.append(' - [ ] The CHANGELOG displays the correct version and date.')
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body.append(' - [ ] The CHANGELOG includes all relevant, user-facing changes since the last release.')
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body.append(' - [ ] There are no unexpected commits being merged into the ' + LATEST_RELEASE_BRANCH + ' branch.')
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body.append(' - [ ] The docs team is aware of any documentation changes that need to be released.')
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body.append(' - [ ] The mergeback PR is merged back into ' + MAIN_BRANCH + ' after this PR is merged.')
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title = 'Merge ' + MAIN_BRANCH + ' into ' + LATEST_RELEASE_BRANCH
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# Create the pull request
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pr = repo.create_pull(title=title, body='\n'.join(body), head=branch_name, base=LATEST_RELEASE_BRANCH)
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print('Created PR #' + str(pr.number))
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# Assign the conductor
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pr.add_to_assignees(conductor)
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print('Assigned PR to ' + conductor)
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# Gets the person who should be in charge of the mergeback PR
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def get_conductor(repo, pull_requests, other_commits):
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# If there are any PRs then use whoever merged the last one
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if len(pull_requests) > 0:
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return get_merger_of_pr(repo, pull_requests[-1])
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# Otherwise take the author of the latest commit
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return other_commits[-1].author.login
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# Gets a list of the SHAs of all commits that have happened on main
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# since the release branched off.
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# This will not include any commits that exist on the release branch
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# that aren't on main.
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def get_commit_difference(repo):
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commits = run_git('log', '--pretty=format:%H', ORIGIN + '/' + LATEST_RELEASE_BRANCH + '..' + ORIGIN + '/' + MAIN_BRANCH).strip().split('\n')
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# Convert to full-fledged commit objects
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commits = [repo.get_commit(c) for c in commits]
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# Filter out merge commits for PRs
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return list(filter(lambda c: not is_pr_merge_commit(c), commits))
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# Is the given commit the automatic merge commit from when merging a PR
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def is_pr_merge_commit(commit):
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return commit.committer.login == 'web-flow' and len(commit.parents) > 1
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# Gets a copy of the commit message that should display nicely
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def get_truncated_commit_message(commit):
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message = commit.commit.message.split('\n')[0]
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if len(message) > 60:
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return message[:57] + '...'
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else:
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return message
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# Converts a commit into the PR that introduced it to the main branch.
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# Returns the PR object, or None if no PR could be found.
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def get_pr_for_commit(repo, commit):
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prs = commit.get_pulls()
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if prs.totalCount > 0:
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# In the case that there are multiple PRs, return the earliest one
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prs = list(prs)
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sorted_prs = sorted(prs, key=lambda pr: int(pr.number))
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return sorted_prs[0]
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else:
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return None
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# Get the person who merged the pull request.
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# For most cases this will be the same as the author, but for PRs opened
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# by external contributors getting the merger will get us the GitHub
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# employee who reviewed and merged the PR.
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def get_merger_of_pr(repo, pr):
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return repo.get_commit(pr.merge_commit_sha).author.login
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def get_current_version():
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with open('package.json', 'r') as f:
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return json.load(f)['version']
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def get_today_string():
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today = datetime.datetime.today()
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return '{:%d %b %Y}'.format(today)
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def update_changelog(version):
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if (os.path.exists('CHANGELOG.md')):
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content = ''
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with open('CHANGELOG.md', 'r') as f:
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content = f.read()
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else:
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content = EMPTY_CHANGELOG
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newContent = content.replace('[UNRELEASED]', version + ' - ' + get_today_string(), 1)
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with open('CHANGELOG.md', 'w') as f:
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f.write(newContent)
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def main():
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if len(sys.argv) != 3:
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raise Exception('Usage: update-release.branch.py <github token> <repository nwo>')
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github_token = sys.argv[1]
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repository_nwo = sys.argv[2]
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repo = Github(github_token).get_repo(repository_nwo)
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version = get_current_version()
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# Print what we intend to go
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print('Considering difference between ' + MAIN_BRANCH + ' and ' + LATEST_RELEASE_BRANCH)
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short_main_sha = run_git('rev-parse', '--short', ORIGIN + '/' + MAIN_BRANCH).strip()
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print('Current head of ' + MAIN_BRANCH + ' is ' + short_main_sha)
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# See if there are any commits to merge in
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commits = get_commit_difference(repo)
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if len(commits) == 0:
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print('No commits to merge from ' + MAIN_BRANCH + ' to ' + LATEST_RELEASE_BRANCH)
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return
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# The branch name is based off of the name of branch being merged into
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# and the SHA of the branch being merged from. Thus if the branch already
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# exists we can assume we don't need to recreate it.
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new_branch_name = 'update-v' + version + '-' + short_main_sha
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print('Branch name is ' + new_branch_name)
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# Check if the branch already exists. If so we can abort as this script
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# has already run on this combination of branches.
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if branch_exists_on_remote(new_branch_name):
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print('Branch ' + new_branch_name + ' already exists. Nothing to do.')
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return
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# Create the new branch and push it to the remote
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print('Creating branch ' + new_branch_name)
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run_git('checkout', '-b', new_branch_name, ORIGIN + '/' + MAIN_BRANCH)
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print('Updating changelog')
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update_changelog(version)
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# Create a commit that updates the CHANGELOG
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run_git('add', 'CHANGELOG.md')
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run_git('commit', '-m', version)
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run_git('push', ORIGIN, new_branch_name)
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# Open a PR to update the branch
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open_pr(repo, commits, short_main_sha, new_branch_name)
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if __name__ == '__main__':
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main()
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