Retry logic in Spring Multirabbit

Some days ago I realized spring-multirabbit had a bug that affected the retry support since its first version. I was browsing for spring-multirabbit in stackoverflow and found this question reporting the issue which was also linked to the original issue that I took but never had the time to check. Thank you folks that opened the question and issue.

I just launched the following spring-multirabbit versions that fix it:

• v3.3.1
• v3.2.1
• v3.1.7
• v3.0.2
• v2.7.4
• v2.6.3

And here is how to use it. Suppose three brokers, where the first is the default configuration under spring.rabbitmq and there are two other brokers, configured under broker1 and broker2. There is no inheritance logic for the retry logic, therefore every broker needs to be configured accordingly.

spring.rabbitmq.listener.simple.retry.enabled = true
spring.rabbitmq.listener.simple.retry.initial-interval = 1000
spring.rabbitmq.listener.simple.retry.max-attempts = 5

spring.multirabbitmq.enabled = true
spring.multirabbitmq.connections.broker1.listener.simple.retry.enabled = true
spring.multirabbitmq.connections.broker1.listener.simple.retry.initial-interval = 2000
spring.multirabbitmq.connections.broker1.listener.simple.retry.max-attempts = 10

spring.multirabbitmq.connections.broker2.listener.simple.retry.enabled = true
spring.multirabbitmq.connections.broker2.listener.simple.retry.initial-interval = 5000
spring.multirabbitmq.connections.broker2.listener.simple.retry.max-attempts = 20

In the example configuration, the default connection is configured with 5 retries with 1sec interval, while broker1 is configured with 10 retries with 2sec interval and broker2 is configured with 20 retries with 5sec interval.