Qpid Proton Python Reconnect Attempt Every Minute

Question

I'm new to Qpid Proton Python and AMQP. There is one thing that I'm a bit stuck on which I hope I can get some support from the community.

One of my application requirements is to re-attempt connection every minute if the connection from my application to the message broker (ActiveMQ) has been lost.

From the source code and this: documentation (Section 5.2.4, page 14), it seems like I can create a custom Backoff instance to the "reconnect" parameter when calling the "container.connect()" method during on_start event.

So I did something like this for my custom Backoff instance:

class Backoff:
    """
    A modified reconnect strategy that retries, every 60s. 
    Repeated calls to :meth:`next` returns a value for the next delay
    """

    def __init__(self):
        self.delay = 60

    def reset(self):
        """
        Reset the backoff delay to 60 seconds.
        (This method is required for Qpid Proton Library)
        """
        self.delay = 60

    def next(self):
        """
        Modified the backoff mechanism to attempt reconnect every 60s

        :return: The next delay in seconds.
        :rtype: ``float``
        """
        return self.delay

During on_start:

def on_start(self, event):
    self.container = event.container
    self.conn = self.container.connect(
        url=self.url, user=self.user, password=self.password, reconnect=Backoff())

Questions:

May I know how can I test if this is actually working fine? I placed print statements in the "next()" method of my custom Backoff instance and disconnected my Wifi to simulate a disconnect, however, the reconnection attempt doesn't seem to work.
As the container runs, how can I capture disconnection events and attempt reconnection?

Any advice will be greatly appreciated, thank you!

Qpid Proton Python Reconnect Attempt Every Minute

0 Answers0