Script to create Github milestones for recurring release windows

create-github-milestones

#!/usr/bin/env python
"""Create date-based release milestones on Github

By default this created milestones of the form 'Public Website – DATE'

If your git config defines github.user / github.password settings these will be used rather than prompting
for credentials. For sanity, !-prefixed github.password entries are supported so you can e.g. query the
OS X keychain rather than hard-coding passwords in a text file.
"""

import datetime
import json
import subprocess
import sys
from getpass import getpass, getuser

import requests


def check_simple_output(*args, **kwargs):
    return "".join(subprocess.check_output(shell=True, *args, **kwargs)).strip()


def get_github_credentials():
    github_username = getuser()
    github_password = None

    try:
        github_username = check_simple_output('git config --get github.user')
    except subprocess.CalledProcessError:
        pass

    if not github_password:
        try:
            github_password = check_simple_output('git config --get github.password')
        except subprocess.CalledProcessError:
            pass

        # Support Git config entries which are shell commands which return passwords
        # e.g. !security find-internet-password -a USERNAME -gs https://github.com -w | tr -d '\n'
        if github_password.startswith("!"):
            github_password = check_simple_output(github_password.lstrip('!'))

    if not github_password:
        getpass("Github password: ")

    return github_username, github_password


def main():
    username, password = get_github_credentials()

    today = datetime.date.today()

    r = requests.get('https://api.github.com/repos/loc-rdc/wdl/milestones',
                     auth=(username, password))
    r.raise_for_status()

    milestones = [i['title'] for i in r.json()]

    for month_offset in range(12):
        for day in (8, 22):
            target_month = today.month + month_offset
            if target_month > 12:
                target_month -= 12
                target_year = today.year + 1
            else:
                target_year = today.year

            release_day = today.replace(year=target_year, month=target_month, day=day)

            milestone = 'Public Website - %s' % release_day.isoformat()

            if milestone in milestones:
                continue

            print 'Creating %s' % milestone
            r = requests.post('https://api.github.com/repos/loc-rdc/wdl/milestones',
                              auth=(username, password),
                              data=json.dumps({
                                  "title": milestone,
                                  "due_on": release_day.isoformat()
                              }))
            r.raise_for_status()


if __name__ == "__main__":
    try:
        import bpdb as pdb
    except ImportError:
        import pdb

    try:
        main()
    except Exception as e:
        print >>sys.stderr, e
        pdb.pm()