MQSeries.net :: View topic - JMS synchorinozation in message broker

MQSeries.net

Tech Exchange

Education

Certifications

Library

Info Center

SupportPacs

FAQÂ Â

Usergroups

RSS Feed - WebSphere MQ Support

RSS Feed - Message Broker Support

MQSeries.net Forum Index » General Discussion » JMS synchorinozation in message broker

JMS synchorinozation in message broker

« View previous topic :: View next topic »

Author

Message

viswanath

Posted: Fri Dec 19, 2008 3:14 am Post subject: JMS synchorinozation in message broker

Apprentice

Joined: 09 Jun 2005
Posts: 33

Hi,

We have a requirement that once we place the messages into JMS output queue back end system has pick the message and have respond with in 25 sec.if the message did not receive with in that time to the JMS input node we have to throw an exception.

so could any one suggest how to make the 2 flows to be synchoronized to calcute the 25 sec time.

we are using Message broker 6.1 in this project.

Appreciate your quick response.

Thanks
Viswanath

Vitor

Posted: Fri Dec 19, 2008 3:38 am Post subject: Re: JMS synchorinozation in message broker

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA

viswanath wrote:

We have a requirement that once we place the messages into JMS output queue back end system has pick the message and have respond with in 25 sec.if the message did not receive with in that time to the JMS input node we have to throw an exception.

so could any one suggest how to make the 2 flows to be synchoronized to calcute the 25 sec time.

Disclaimer - JMS & Java is not my strongest subject. I could be talking rubbish.

So A writes to a request queue and awaits a response on a given reply queue. B reads this request queue and has 25 seconds to respond to the specified queue. To me this can be achieved by using an MQGET with a wait of 25 seconds. AFAIK you can't do this with a JMS Input node, but you use an MQGET node to wait for the reply and dance with the headers if you needed to.

Don't forget to set the expiry on the response message in case the message arrives too late to be read.

Other and possibly better solutions are undoubtably possible.
_________________
Honesty is the best policy.
Insanity is the best defence.

viswanath

Posted: Fri Dec 19, 2008 5:01 am Post subject:

Apprentice

Joined: 09 Jun 2005
Posts: 33

Thanks victor.When we use mqget node i have two questions here

1.on what basis can we pick the message.my understanding is that we can pick based on the correlation id or message id.if these are not present.is it the case that if any message arrives will mqget node able to pick the same.
2.once we use mqget jms headers will be lost.so shall i store into environmnet and play with it?

viswanath

Posted: Fri Dec 19, 2008 5:05 am Post subject:

Apprentice

Joined: 09 Jun 2005
Posts: 33

Also will mqget can pick the messages from JMS queue(meaning that the binded jms of the physical queue)

Vitor

Posted: Fri Dec 19, 2008 5:07 am Post subject:

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA

viswanath wrote:

1.on what basis can we pick the message.my understanding is that we can pick based on the correlation id or message id.if these are not present.is it the case that if any message arrives will mqget node able to pick the same.

The MQGET node is effectively an MQGET call wrapped up and will retrieve a message if it a) matches the message id supplied b) matches the correl id if supplied c) is the first message available on the queue if no matching criteria are supplied

viswanath wrote:

2.once we use mqget jms headers will be lost.

I thought the JMS headers (or at least the information) was stored on the message in the RFH2.

Shows what I know about Java.
_________________
Honesty is the best policy.
Insanity is the best defence.

Display posts from previous:

Page 1 of 1

MQSeries.net Forum Index » General Discussion » JMS synchorinozation in message broker

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

Protected by Anti-Spam ACP