Incompatibility between RabbitProperties from Spring Boot 3.4.0 and CachingConnectionFactory

[oneiros-de]

In what version(s) of Spring AMQP are you seeing this issue?

3.2.0

Describe the bug

In Spring Boot 3.4.0 org.springframework.boot.autoconfigure.amqp.RabbitProperties#getAddresses() returns a List<String> while it previously returned a String.

This makes it incompatible with AbstractConnectionFactory.setAddresses which accepts a String.

With Spring Boot 3.3x and AMQP 3.2.0 one can write cachingConnectionFactory.setAddresses(rabbitProperties.getAddresses()); which is impossible with 3.4.0

Expected behavior

Either make setAddresses compatible with the new RabbitProperties or add a new method that is.

[artembilan]

Not sure why would one use Spring Boot, but not its auto-configuration.
I mean that CachingConnectionFactory bean is really created by the RabbitAutoConfiguration, so no need to deal with your own custom beans.

As a workaround I see that it is easy to adjust your code:

cachingConnectionFactory.setAddresses(rabbitProperties.getAddresses().stream().collect(Collectors.joining(",")));

Either way, I'll introduce AbstractConnectionFactory.setAddresses(List<String> addresses) shortly.