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| Automatic answers for my input messages |
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| RulWrk |
 Posted: Thu Jun 26, 2003 12:42 am Post subject: Automatic answers for my input messages |
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Newbie
Joined: 26 Jun 2003
Posts: 4
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Hi,
I would like to simulate a real environment of a customer in order to check if the development done in a C++ application is working fine.
To do that, I have two queues created: one for input messages (MQPUT) and other for output messages (MQGET).
I am able to MQPUT messages in the input queue and to retrieve them with the MQGET from the output queue, but the problem is that I need to insert "manually" the output messages.
I would like to create automatic output "dummy" messages from each input message. It could be a "common" message only changing some part of it (like the reference number or something like that).
I think that I could do that using, for instance, a process to be launched for each input message (trigger), but I am not sure. This process will MQPUT directly the output message in the MQGET queue.
The problem is that I don't know how to launch the program.
Could anybody help me on this ?
Many thanks,
RulWrk. |
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| rwa |
| Posted: Thu Jun 26, 2003 1:40 am Post subject: |
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Voyager
Joined: 22 Jan 2002
Posts: 76
Location: Duesseldorf/Germany
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You don't need the write an trigger for that.
An program that loops with MQGET calls on the input queue should do the work. Each time MQGET gets a message the program extents or changes the message as needed an puts the message to the output queue (MQPUT). |
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| ashgove |
| Posted: Thu Jun 26, 2003 3:18 am Post subject: Implement JMS listener |
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Novice
Joined: 29 May 2003
Posts: 11
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If u are using JMS, you can write a listener which listens to messages
coming on input queue and then write the modified message to
output queue.
BTW, I cud not get what u meant by "manually"?
HTH
-A-
_________________
-A- |
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| RulWrk |
| Posted: Thu Jun 26, 2003 8:26 am Post subject: A better explanation ... |
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Newbie
Joined: 26 Jun 2003
Posts: 4
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Hi all, first, thanks for your help.
I will try to explain myself better.
The application that I am developing tries to recovery data from a customer database through a ID number using MQSeries queues facilities.
I mean, my application has two different calls to MQSeries.
- First, it builds a message and MQPUT it in the MQSeries input queue.
- Second, it waits for the answer querying with MQGET in the MQSeries output queue.
After MQSeries input queue receives a message, a trigger created by the customer (I suppose) launch a process in order to retrieve all the information using the data of the message into the customer database. Then, an output message is written in the output queue.
So, I have the application that put the input message and retrieves the answer, but I need to simulate the process made by the customer to use the message put in the input queue and create a new one in the output queue. How can I simulate that ? Maybe through a trigger that writes the output message ? If so, how can I do that ?
Many thanks for your help.
RulWrk. |
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| jefflowrey |
| Posted: Thu Jun 26, 2003 8:33 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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You basically just need to write another program that will read the input queue, and generates a fake message on the output queue.
You can then cause this program to be initiated in a number of different ways.- As you say, you can configure the Input queue with a trigger that specifies your new program. Then you will start a trigger monitor that will watch the intiation queue you defined on your Input queue, which will start your program
- You can write your new program to "listen" to the input queue, by issuing an MQGet with a wait time, and looping. For instance, issue an MQGet with a wait time of 30 seconds, and loop over that MQGet until some condition is true.
- You can manually start your program.
- You can use some sort of a scheduler to start your program every couple minutes or so.
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| bower5932 |
| Posted: Fri Jun 27, 2003 9:09 am Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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| Take a look at the samples that ship with the MQ code. Specifically, look at amqsreq0.c which acts as a requester. You can then use amqsecha.c to echo back a reply. I would guess that you want a modified version of amqsecha.c. |
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