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from __future__ import print_function, unicode_literals
import optparse
from proton import Message, Url
from proton.reactor import Container
from proton.handlers import MessagingHandler, TransactionHandler

class TxSend(MessagingHandler, TransactionHandler):
    def __init__(self, url, messages, batch_size):
        super(TxSend, self).__init__()
        self.url = Url(url)
        self.current_batch = 0
        self.committed = 0
        self.confirmed = 0 = messages
        self.batch_size = batch_size

    def on_start(self, event):
        self.container = event.container
        self.conn = self.container.connect(self.url)
        self.sender = self.container.create_sender(self.conn, self.url.path)
        self.container.declare_transaction(self.conn, handler=self)
        self.transaction = None

    def on_transaction_declared(self, event):
        self.transaction = event.transaction

    def on_sendable(self, event):

    def send(self):
        while self.transaction and and (self.committed + self.current_batch) <
            seq = self.committed + self.current_batch + 1
            msg = Message(id=seq, body={'sequence':seq})
            self.transaction.send(self.sender, msg)
            self.current_batch += 1
            if self.current_batch == self.batch_size:
                self.transaction = None

    def on_accepted(self, event):
        if event.sender == self.sender:
            self.confirmed += 1

    def on_transaction_committed(self, event):
        self.committed += self.current_batch
        if self.committed ==
            print("all messages committed")
            self.current_batch = 0
            self.container.declare_transaction(self.conn, handler=self)

    def on_disconnected(self, event):
        self.current_batch = 0

parser = optparse.OptionParser(usage="usage: %prog [options]",
                               description="Send messages transactionally to the supplied address.")
parser.add_option("-a", "--address", default="localhost:5672/examples",
                  help="address to which messages are sent (default %default)")
parser.add_option("-m", "--messages", type="int", default=100,
                  help="number of messages to send (default %default)")
parser.add_option("-b", "--batch-size", type="int", default=10,
                  help="number of messages in each transaction (default %default)")
opts, args = parser.parse_args()

    Container(TxSend(opts.address, opts.messages, opts.batch_size)).run()
except KeyboardInterrupt: pass

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