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#!/usr/bin/env python
#
# Copyright 2013-2020 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
"""Maintainer review action.
This action checks which packages have changed in a PR, and adds their
maintainers to the pull request for review.
"""
import json
import os
import re
import subprocess
from github import Github
def spack(*args):
"""Run the spack executable with arguments, and return the output split.
This does just enough to run `spack pkg` and `spack maintainers`, the
two commands used by this action.
"""
github_workspace = os.environ['GITHUB_WORKSPACE']
spack = os.path.join(github_workspace, 'bin', 'spack')
output = subprocess.check_output([spack] + list(args))
split = re.split(r'\s*', output.decode('utf-8').strip())
return [s for s in split if s]
def main():
# get these first so that we'll fail early
token = os.environ['GITHUB_TOKEN']
event_path = os.environ['GITHUB_EVENT_PATH']
with open(event_path) as file:
data = json.load(file)
# make sure it's a pull_request event
assert 'pull_request' in data
# only request reviews on open, edit, or reopen
action = data['action']
if action not in ('opened', 'edited', 'reopened'):
return
# get data from the event payload
pr_data = data['pull_request']
base_branch_name = pr_data['base']['ref']
full_repo_name = pr_data['base']['repo']['full_name']
pr_number = pr_data['number']
requested_reviewers = pr_data['requested_reviewers']
author = pr_data['user']['login']
# get a list of packages that this PR modified
changed_pkgs = spack(
'pkg', 'changed', '--type', 'ac', '%s...' % base_branch_name)
# get maintainers for all modified packages
maintainers = set()
for pkg in changed_pkgs:
pkg_maintainers = set(spack('maintainers', pkg))
maintainers |= pkg_maintainers
# remove any maintainers who are already on the PR, and the author,
# as you can't review your own PR)
maintainers -= set(requested_reviewers)
maintainers -= set([author])
if not maintainers:
return
# request reviews from each maintainer
gh = Github(token)
repo = gh.get_repo(full_repo_name)
pr = repo.get_pull(pr_number)
pr.create_review_request(list(maintainers))
if __name__ == "__main__":
main()
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