Chapter 10. Error handling

All of the exceptions that AMQ Python throws inherit from the ProtonException class, which in turn inherits from the Python Exception class.

The following example illustrates how to catch any exception thrown from AMQ Python:

try:
    # Something that might throw an exception
except ProtonException as e:
    # Handle Proton-specific problems here
except Exception as e:
    # Handle more general problems here
}

try:
    # Something that might throw an exception
except ProtonException as e:
    # Handle Proton-specific problems here
except Exception as e:
    # Handle more general problems here
}

If you do not require API-specific exception handling, you only need to catch Exception, since ProtonException inherits from it.

You can handle protocol-level errors by overriding the following messaging_handler methods:

These event-handling functions are called whenever there is an error condition with the specific object that is in the event. After calling the error handler, the appropriate close handler is also called.