change-merged

#!/usr/bin/python
#
# This is a simple Gerrit hook for updating Trac with information about what
# changes are in Gerrit review.
#
# It parses the commit messages from Gerrit and looks for a Trac ticket in the 
# style of "#1028".
#
# It then adds a informative message to the Trac ticket about the review URL
# and other data. It can also change the status of the issue to indicate that
# this issue is now under gerrit review.
#
# Script is tested with Trac 0.1.2 and Gerrit 2.6.rc0

# set the auth url
TRAC_URL = "http://gerrit:123456@127.0.0.1/projects/trac/login/rpc"

# the regex we use for findig the issue id
TRAC_ISSUE_ID_REGEX = '\#(\d+)'

# which projects to run the script for
GERRIT_PROJECTS = ["test", ]

import optparse
import sys
import re
import xmlrpclib

python27 = True
try:
    from subprocess import check_output
except Exception as e:
    python27 = False
    import subprocess


if __name__ == '__main__':
    parser = optparse.OptionParser()
    parser.add_option('-c', '--change', dest='changeid')
    parser.add_option('-u', '--change-url', dest='changeurl')
    parser.add_option('-p', '--project', dest='project')
    parser.add_option('-b', '--branch', dest='branch')
    parser.add_option('-s', '--submitter', dest='submitter')
    parser.add_option('-o', '--commit', dest='commit')
    parser.add_option('-t', '--topic', dest='topic')

    (options, x) = parser.parse_args(sys.argv)

    if options.project not in GERRIT_PROJECTS:
        print "wrong project %s" % options.project
        sys.exit(0)

    if python27:
        commitmsg = check_output(['/usr/local/bin/git','cat-file','-p', options.commit])
    else:
        commitmsg = subprocess.Popen(['/usr/local/bin/git','cat-file','-p', options.commit],
                                     stdout=subprocess.PIPE).communicate()[0]
    if not commitmsg or len(commitmsg) < 10:
        print "no commit msg!"
        sys.exit(0)

    regex = re.compile(TRAC_ISSUE_ID_REGEX, re.IGNORECASE)
    mg = regex.search(commitmsg)
    if not mg:
        print "no ticket set here"
        sys.exit(0)
    tracid = int(mg.group(1))
    if not tracid or tracid == 0:
        print "no ticket set here"
        sys.exit(0)

    traccomment = "Reviewed: %s\n" % options.changeurl
    submitter = options.submitter
    strings = options.submitter.split(' ')
    if len(strings) > 1:
        submitter = strings[0]
    traccomment += "Submitter: %s\n" % submitter
    traccomment += "Branch: %s\n\n" % options.branch
    traccomment += commitmsg

    server = xmlrpclib.ServerProxy(TRAC_URL)

    ticket = {'status': 'closed'}
    server.ticket.update(tracid, traccomment, ticket)

    sys.exit(0)