A simple python script to mass pick open changes from gerrit in order based on dependencies.

mass_gerrit_pick.py

#!/bin/sh
""":"
exec python $0 ${1+"$@"}
"""
# Author: Clark Scheff
#
# Picks all open commits for a given project in the correct
# order based on their dependencies.  There is plenty of
# room for improvments but this does work as intended.
#
# Note: make sure you are in the correct project directory before running this.
#
# An example of picking all open commits for android_frameworks_base
# mass_gerrit_pick.py -p ChameleonOS/android_frameworks_base -u d34d -b jellybean-mr2.1 -s review.chameleonos.org

import sys
import subprocess
import json
import getopt

# change these if you don't feel like supplying it at the command line
USERNAME = 'd34d'
BRANCH = 'kitkat'
SITE = 'review.chameleonos.org'
PROJECT = ''
LIMIT = 1000
STATUS = 'open'
COMMITTER = None

def usage():
    print 'usage %s -p project [-b branch][-u username][-s site]' % sys.argv[0]

if len(sys.argv) < 2:
    usage()
    sys.exit(2)

try:
    opts, args = getopt.getopt(sys.argv[1:], 'mp:b:u:s:l:c:', ['merged', 'project', 'branch', 'username', 'site', 'limit', 'committer'])
except getopt.GetoptError as err:
    print str(err)
    usage()
    sys.exit(3)
has_project = False
for o, a in opts:
    if o in ('-p', 'project'):
        PROJECT = a
        has_project = True
    elif o in ('-b', 'branch'):
        BRANCH = a
    elif o in ('-u', 'username'):
        USERNAME = a
    elif o in ('-s', 'site'):
        SITE = a
    elif o in ('-l', 'limit'):
        try:
            LIMIT = int(a)
        except:
            pass
    elif o in ('-m', 'merged'):
        STATUS = 'merged'
    elif o in ('-c', 'committer'):
        COMMITTER = a
    else:
        assert False, 'unhandled option!'

if not has_project:
    print 'Missing project'
    usage()
    sys.exit(4)

LOGIN = '%s@%s' % (USERNAME, SITE)
data = subprocess.check_output(
    [
        'ssh',
        '-p',
        '29418',
        LOGIN,
        'gerrit',
        'query',
        'status:' + STATUS, 'project:' + PROJECT,
        'limit:%d' % LIMIT,
        '--dependencies',
        '--current-patch-set',
        '--format', 'JSON'
    ])
# there is a \n at the very end so omit that from the list
listdata = data.split('\n')[:-1]

picks = []
for i in range(len(listdata) - 1):
    jsondata = json.loads(listdata[i])
    commitId = int(jsondata['number'])
    try:
        dependsOn = jsondata['dependsOn'][0]
        dependencyId = int(dependsOn['number'])
    except:
        dependencyId = 0
    patchset = int(jsondata['currentPatchSet']['number'])
    branch = jsondata['branch']
    if COMMITTER is None or COMMITTER == jsondata['owner']['username']:
        if branch == BRANCH:
            picks.append((commitId, dependencyId, patchset))

# pre-sort the list based on dependency id
picks = sorted(picks, key=lambda x: x[1])
# sort picks so dependencies come before the pick that depends on them
for i in range(len(picks)):
    commitId, dependencyId, patchset = picks[i]
    if dependencyId > 0:
        for j in range(len(picks)):
            if picks[j][0] == dependencyId:
                tmp = picks[i]
                del picks[i]
                if i < j:
                    picks.insert(j, tmp)
                else:
                    picks.insert(j+1, tmp)
                break

# now go through and pick these bad boys
# template requires a tuple of (SITE, PROJECT, commitId % 100, commitId, patchset)
COMMAND_TEMPLATE='git fetch http://%s/%s refs/changes/%02d/%d/%d && git cherry-pick FETCH_HEAD'
for i in range(len(picks)):
    commitId = picks[i][0]
    change = commitId % 100
    command = COMMAND_TEMPLATE % (SITE, PROJECT, change, commitId, picks[i][2])
    subprocess.call(command, shell=True)

This doesn't order correctly.