Create changelog for a new Cepheid version based on git log and fogbugz data

changelog.py

#! /usr/bin/python

from fogbugz import FogBugz
from datetime import datetime, timedelta
from itertools import groupby

import subprocess
import re
import sys

url = 'https://instedd.fogbugz.com/'
email = 'FB_EMAIL'
password = 'FB_PASS'
path = 'PATH_TO_REPOS'


def main(v1, v2):
  fb = fbcases()
  logs = gitcases(v1, v2)

  def getid(entry):
    match = re.search('\d{4}', entry)
    return match.group() if match else None

  logsbyid = groupby(sorted(logs, key=getid), getid)

  print "FogBugz ID, Title, TeamTrack ID, Comments, Commits"
  for caseid, logentries in logsbyid:
    if caseid:
      case = fb[caseid]
      print "{0}, \"{1}\", {2},, \"{3}\"".format(case.ixbug.string, case.stitle.string.encode('UTF-8'), case.teamtrackxid.string, '; '.join(logentries))
    else:
      for logentry in logentries:
        print ",,,,\"{0}\"".format(logentry)


def fbcases():
  fb = FogBugz(url)
  fb.logon(email, password)

  fb.setCurrentFilter(sFilter=132)
  response = fb.search(cols="ixBug,sTitle,TeamTrackxID")

  cases = dict([(case.ixbug.string, case)for case in response.cases.childGenerator()])
  return cases


def gitcases(v1, v2):
  repos = ['reporter', 'receiver', 'web']
  logs = sum([subprocess.check_output(["git", '--git-dir={0}/cepheid-{1}/.git'.format(path, repo), 'log', '{0}..{1}'.format(v1,v2), '--format=format:%s'], stderr=subprocess.STDOUT).split("\n") for repo in repos], [])
  return logs


if __name__ == "__main__":
  if len(sys.argv) < 3: print "Usage: changelog FROM_VERSION TO_VERSION"
  else: main(sys.argv[1], sys.argv[2])