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from astakos.im.queue import exchange_connect, exchange_send, Receipt

class Queue(object):

    """Queue.

       Required constructor parameters: exchange, message_key, client_id.

    """

    def __init__(self, **params):

        exchange = params['exchange']

        self.conn = exchange_connect(exchange)

        self.message_key = params['message_key']

        self.client_id = params['client_id']

    def send(self, user, resource, value, details):

        body = Receipt(self.client_id, user, resource, value, details).format()

        exchange_send(self.conn, self.message_key, body)