migrate cname in redis and mongodb from tsuru 0.6.2 to 0.7.0

migrate_tsuru.py

import pymongo, redis, os

REDIS_HOST = os.getenv("REDIS_HOST", "localhost")
REDIS_PORT = os.getenv("REDIS_PORT", 6379)
MONGO_HOST = os.getenv("MONGODB_HOST", "localhost")
MONGO_PORT = os.getenv("MONGODB_PORT", 27017)

redis = redis.StrictRedis(host=REDIS_HOST, port=REDIS_PORT)
cnames = redis.keys("cname:*")

for cname in cnames:
  if (redis.type(cname) == 'string'):
    old = redis.get(cname)
    redis.delete(cname)
    redis.lpush(cname, old)
    print "converted %s to list in redis" % cname

mongo = pymongo.MongoClient(MONGO_HOST, MONGO_PORT)

for app in mongo.tsuru.apps.find():
  if (type(app["cname"]) is not list):
    app["cname"] = [app["cname"]]
    mongo.tsuru.apps.save(app)
    print "converted %s cname to list in mongodb" % app["name"]