Example 1: Committing Messages After Successful Processing

This example demonstrates acknowledging messages after successful downstream processing.

Pipeline Configuration:

1. IBM MQ Consumer Snap configured with:
   • Queue Name: ORDER.QUEUE
   • Syncpoint Control: Syncpoint
   • Message Count: 10
2. Mapper Snap processes each message
3. IBM MQ Acknowledge Snap configured with:
   • Rollback Message: Not selected (Disabled)

Result: Messages are successfully processed and written to the database. The Acknowledge Snap commits the transaction, removing the messages from the queue.

Example 2: Rolling Back Messages on Processing Failure

This example shows how to rollback messages when downstream processing fails.

Pipeline Configuration:

1. IBM MQ Consumer Snap configured with:
   • Queue Name: PAYMENT.QUEUE
   • Client Acknowledgment Mode
2. Mapper Snap processes payment data
3. REST Post Snap calls payment API
4. Router Snap with two routes:
   • Success route: IBM MQ Acknowledge Snap with Rollback Message not selected (commits)
   • Failure route: IBM MQ Acknowledge Snap with Rollback Message selected (rolls back)

Result:

• Success case: Payment API returns success → message is committed and removed from the queue
• Failure case: Payment API returns error → message is rolled back and returned to the queue for retry