MQSeries.net :: View topic - blocking publications on the message flow input queue

asalema

Hi All,

In my project we need to retain publications on the MQ queue (not in the MQSI database)

Here is the situation
we have a message flow
inputNode->compute node->publication node

The input message looks like {.......<topic>topic1</topic>....<data>data message</data>........}
The compute node reads the topic and forwards the publication to the publication node to forward to subscribers.

What we need to do is it to be able to enable/disable publications for certain topics. disable topic means, the messages should be pile up on the MQ queue (and NOT discarded) until the application enables that topic again, then the messages will be read from the queue and published.
We are storing the topics with a topic status on a separate DB2 table.

I don't think that retained publications will work here, because we don't want the publications to be active during disablement
and also, for security reasons, we don't want the messages to be stored in the pub/sub database.

Any thoughts on this?

What I think we should do is to implement our own input node that uses some filters to read only the messages with enabled topics and keep the remaining messages on the input queue.
However, I don't have any experience with implementing input nodes and my guessing is that it will be very complicated.
So, does anyone have any idea how to implement this? appreciate it, thx