Connecting to AMQP with MuleSoft

Desy Kristianti @dessskris

Agenda

• What is AMQP?
• Why use messaging queues?
• Using the AMQP Connector in MuleSoft
• Live demo
• Error handling

About Me

What is AMQP?

• Open source international standard
• Asynchronous messaging between applications
• The message vehicle & transport mechanism
• Latest protocol: 1.0
• Mule-supported protocol: 0-9-1

The AMQP Model

Components:

• Exchange
• Message queue 
• Binding

How does it work?

1. The publisher application sends a message & routing key to Exchange
2. The message is routed according to Bindings to its corresponding Queue
3. The message is ready to be consumed
4. The consumer application can consume and ack or reject this message, or requeue it

Why use messaging queues?

• Handle all asynchronous requests reliably
• Added resilience if the processing system is down
• Route and distribute messages according to business rules
• Allow loosely coupled systems to communicate easily

How do we do this with MuleSoft?

Check out this live demo!

See repo on https://github.com/dessskris/amqp-mulesoft/

AMQP error handling on MuleSoft

• Save attributes.ackId if using manual acknowledgement
• Reject the message in error handler
• Where appropriate, post status updates to another queue
• When the message completes processing in another API,
  they can post status updates to this queue

Conclusion

• AMQP allows applications to send messages to each other
• Publish to an Exchange, routing with Bindings, consume from the Queue
• Reliable asynchronous messaging with added resilience
• Achievable on MuleSoft using AMQP 0-9-1

Thank you!

dessskris@gmail.com

Desy Kristianti

@dessskris

References

• https://www.amqp.org
• https://whatis.techtarget.com/definition/Advanced-Message-Queuing-Protocol-AMQP
• https://en.wikipedia.org/wiki/Advanced_Message_Queuing_Protocol