How to consume messages synchronously from a solace "Queue" via Spring boot application?

Pavithra

Hi Team

I am trying to develop an application where we connect to a Queue ( which is subscribing to multiple topics) and read message synchronously and make sure the next message is consumed only after current message is acknowledged.

I tried reading resources provided by solace documentation and found snippet available only to subscribe to a topic but not Queue.

I need an reference or simple code snippet to understand and develop the same.

Kindly help. Any sought of help is appreciated 🙂

Pavithra

Hi @Tamimi

Thanks for your prompt response 😃.

But I was seeking for code snippet example (without using listener). Anyways I tried creating connection, session, consumer and applied recive() method to receive messages without opening any listener and it worked.

Thanks for your support as always.

Pavithra

@hong requesting to assign someone to assist on my query.... Thanks in advance 🙂

Tamimi

Hey there @Pavithra ! I'll take a stab at this and mention there are multiple approaches for the desired behaviour you are attempting to achieve:

• You can set the MAX_DELIVERED_UNACKNOWLEDGED_MSGS_PER_FLOW on the queue to set the maximum number of messages delivered but not acknowledged per flow for the Queue. In your case you want this set to 1
• Set the FLOW_WINDOW_SIZE to 1 when binding to the queue from your application. This controls how many messages can leave the broker (i.e. queue) to the API/App at once.

It is important to note that the MAX_DELIVERED_UNACKNOWLEDGED_MSGS_PER_FLOW should be greater than or equal toFLOW_WINDOW_SIZE

There are a couple of community posts that would help with this if you want to dig further, but thats a starting point!

Pavithra

Hi @Tamimi

Thanks for your prompt response 😃.

But I was seeking for code snippet example (without using listener). Anyways I tried creating connection, session, consumer and applied recive() method to receive messages without opening any listener and it worked.

Thanks for your support as always.

Tamimi

Great to hear that! And glad you're finding the community helpful 😊