Voucher Catalogue API

import sha
from time import gmtime, strftime


def getTPSTimeString():

    return strftime("%Y%m%d%H%M",gmtime())[0:11]

def voucher_catalogue(str_timestamp = None):

    voucherServer = 'http://tct-testing-tps.hk.kitesystems.com:8080/voucher-testing2/api/catalogue'
    data = {}

    if str_timestamp is not None:
        data['timestamp'] = str_timestamp

    data['app_name'] = 'WALLET_TO_VOUCHER'

    sha1 = sha.new()
    if str_timestamp is not None:
        sha1.update(str(str_timestamp))
    else:
        sha1.update(str(""))

    sha1.update('WALLET_TO_VOUCHER')
    sha1.update('492DDE365315631F')
    sha1.update(str(getTPSTimeString()))

    data['session_control'] = str(sha1.hexdigest())

    try:
        urllib_request = urllib2.Request(voucherServer,urllib.urlencode(data))
        response = urllib2.urlopen(urllib_request).read()

        catalogue = Catalogue()
        catalogue.ParseFromString(response)

        if not catalogue.success:
            return False
        else:
            return catalogue
    except Exception as e:
        return False