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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » Multiple flows with same input node

Multiple flows with same input node

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kt76

Posted: Sat Feb 07, 2004 12:35 am Post subject: Multiple flows with same input node

Acolyte

Joined: 18 Jan 2004
Posts: 52

We have multiple flows who use a particular subflow. The subflow is a common request-reply to a backend service with Output q-Q1 and Input q-Q2

In the event that one flow starts and triggers the subflow, how can we check/stop other flows from triggering off as they include the subflow as well.

Any pointers will be appreciated

leongor

Posted: Sun Feb 08, 2004 1:28 am Post subject:

Master

Joined: 13 May 2002
Posts: 264
Location: Israel

I'm not sure I understood your question completely,
but there is no corellation between message flows using the same subflow.
Each message flow has its own subflow instance running inside.
_________________
Regards.
Leonid.

IBM Certified MQSeries Specialist.

kt76

Posted: Mon Feb 09, 2004 12:39 am Post subject:

Acolyte

Joined: 18 Jan 2004
Posts: 52

Hi,
this is my flow config

Mqinput -->compute ---->SUBFLOW ---->compute-->MQOutpu

SUBFLOW - Request/reply

input--->compute--->mqoutput on Q1

mqinput-->compute -->output on Q2

In case there is another flow using this subflow, will it also be trigeered off because the subflow is listening on queue Q2

wooda

Posted: Mon Feb 09, 2004 4:48 am Post subject:

Master

Joined: 21 Nov 2003
Posts: 265
Location: UK

One way I can think of is to setup the MQInput node in the subflow to only get certain messages. eg. with a specific CORRELID or MSGID.
As long as you can identify which message belongs to which parent flow in this way then this technique can be employed.
The properties of the subflow which determine which message to get can be promoted to messageflow level and set differently by different parent flows.

Another possible alternative is to have another separate messageflow processing messages returning from the external service on Q2 and routing them to different queues (and therefore different flows) based on the content of the message. Again the queue on which the subflow picks up messages (currently always Q2) can be set differently by different users of the subflow if the queue property on the MQinput node is promoted to message flow level.

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