OpenStack Study: functions.py

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def _lazy_join(separator, strings):

    return separator.join([force_unicode(s)

                           for s in strings])

lazy_join = lazy(_lazy_join, unicode)

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def bytes_to_gigabytes(bytes):

    # Converts the number of bytes to the next highest number of Gigabytes

    # For example 5000000 (5 Meg) would return '1'

    return int(math.ceil(float(bytes) / 1024 ** 3))

**** CubicPower OpenStack Study ****

def add_logout_reason(request, response, reason):

    # Store the translated string in the cookie

    lang = translation.get_language_from_request(request)

    with translation.override(lang):

        reason = unicode(reason).encode('utf-8')

        response.set_cookie('logout_reason', reason, max_age=30)

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def logout_with_message(request, msg):

    """Send HttpResponseRedirect to LOGOUT_URL.

    `msg` is a message displayed on the login page after the logout, to explain

    the logout reason.

    """

    logout(request)

    response = http.HttpResponseRedirect(

        '%s?next=%s' % (settings.LOGOUT_URL, request.path))

    add_logout_reason(request, response, msg)

    return response

**** CubicPower OpenStack Study ****

def get_page_size(request, default=20):

    session = request.session

    cookies = request.COOKIES

    return int(session.get('horizon_pagesize',

                           cookies.get('horizon_pagesize',

                                       getattr(settings,

                                               'API_RESULT_PAGE_SIZE',

                                               default))))