auto-create-pull-requests

#!/usr/bin/env python
# Creates pull requests to automatically forward port from one release to another.
from __future__ import print_function
from github import Github, GithubException
from sys import exit
from os.path import expanduser
from socket import setdefaulttimeout
setdefaulttimeout(120)

# Mappings between releases for CMSSW
MAPPINGS = {
"cmssw": [
  # CMSSW_6_2_X
  ("CMSSW_6_2_X", "CMSSW_6_2_X_SLHC"),
  # CMSSW_7_0_X
  ("CMSSW_7_0_X", "CMSSW_7_1_X"),
  # CMSSW_7_1_X
  ("CMSSW_7_1_X", "CMSSW_7_2_X"),
  # CMSSW_7_2_X
  ("CMSSW_7_2_X", "CMSSW_7_3_X"),
],
"cmsdist": [
  # CMSSW_7_0_X
  # CMSSW_7_1_X
  # CMSSW_7_2_X
]
}

if __name__ == "__main__":
  gh = Github(login_or_token=open(expanduser("~/.github-token")).read().strip())
  for repo in MAPPINGS:
    try:
      gh_repo = gh.get_organization("cms-sw").get_repo(repo)
    except:
      print("Could not find repository.")
      exit(0)
    for (head, base) in MAPPINGS[repo]:
      title = "Forward port %s into %s" % (head, base)
      pr = None
      try:
        pr = gh_repo.create_pull(title=title,
                                 body="",
                                 base=base,
                                 head=head)
      except GithubException as e:
        if e.data[u"errors"][0][u"message"].startswith("No commits between"):
          print("%s already in %s" % (head, base))
        elif e.data[u"errors"][0][u"message"].startswith("A pull request already exists"):
          print("%s is already pending for merge in %s" % (head, base))
        else:
          print(e.data)
          exit(1)
      if pr:
        print(pr)