How to view Handled messages

[paddymccrudden]

Hi,

I am in the process of debugging and application that uses PyPubSub for its messages. I am using the snoop methods (https://pypubsub.readthedocs.io/en/v4.0.3/usage/usage_advanced_debug.html#id4) to see which messages are published. However, I'd really like to also log whenever a handler receives a message. Is there a means of doing so easily?

Paddy

[schollii]

Have you looked at the notification handlers? They will notify on various pubsub related activities like message publish, message received by which listener, topic created/deleted, etc.

[paddymccrudden]

Thanks - I ended up enforcing some structure on my listeners to log the events. It worked well. I did this as I couldn't see how the notification handlers managed listeners. Do you have a link on that?

[schollii]

Yes have a look at

• https://github.com/schollii/pypubsub/blob/master/examples/advanced/notifhandle.py
• https://pypubsub.readthedocs.io/en/v4.0.3/usage/module_utils.html#pubsub.utils.IgnoreNotificationsMixin

The notifySend() method of your custom handler gets called several times for each listener.