Auto queue exchange creation with spring cloud function and rabbitmq - spring-boot

Question

We are creating a rabbitMq consumer using the new spring cloud function library.
However we find that on startup of the application, we don't see the queues or exchanges create on the rabbitMq instance.
Here is our config.
spring:
cloud:
function:
definition: someReceiver
stream:
binders:
rabbit:
type: rabbit
bindings:
someReceiver-in-0:
consumer:
max-attemps: 1
batch-mode: true
binder: rabbit
destination: someExhange
group: someQueue
default-binder: rabbit
rabbit:
bindings:
someReceiver-in-0:
consumer:
acknowledge-mode: MANUAL
auto-bind-dlq: true
queue-name-group-only: true
exchange-type: topic
max-concurrency: 10
prefetch: 200
enable-batching: true
batch-size: 10
receive-timeout: 200
dlq-dead-letter-exchange:
This is our consumer.
#Bean
public Consumer<Message<Long>> someReceiver() {
return ....
}
In logs we can see :
o.s.i.monitor.IntegrationMBeanExporter : Registering MessageChannel errorChannel
o.s.i.monitor.IntegrationMBeanExporter : Registering MessageChannel nullChannel
o.s.i.monitor.IntegrationMBeanExporter : Registering MessageHandler _org.springframework.integration.errorLogger
o.s.i.endpoint.EventDrivenConsumer : Adding {logging-channel-adapter:_org.springframework.integration.errorLogger} as a subscriber to the 'errorChannel' channel
o.s.i.channel.PublishSubscribeChannel : Channel 'X' has 1 subscriber(s).
The problem we are having is that no queue or exchange is being created on the rabbitMq broker on application startup.
We were expecting that a queue named someQueue and an exchanged named someExchange should have been created on application startup

Answer 1

Works as designed just directly from https://start.spring.io:
2021-04-19 12:02:07.476 INFO 28260 --- [ main] o.s.c.s.m.DirectWithAttributesChannel : Channel 'application.someReceiver-in-0' has 1 subscriber(s).
2021-04-19 12:02:07.563 INFO 28260 --- [ main] o.s.i.monitor.IntegrationMBeanExporter : Registering MessageChannel errorChannel
2021-04-19 12:02:07.595 INFO 28260 --- [ main] o.s.i.monitor.IntegrationMBeanExporter : Registering MessageChannel nullChannel
2021-04-19 12:02:07.600 INFO 28260 --- [ main] o.s.i.monitor.IntegrationMBeanExporter : Registering MessageChannel someReceiver-in-0
2021-04-19 12:02:07.613 INFO 28260 --- [ main] o.s.i.monitor.IntegrationMBeanExporter : Registering MessageHandler _org.springframework.integration.errorLogger
2021-04-19 12:02:07.631 INFO 28260 --- [ main] o.s.i.endpoint.EventDrivenConsumer : Adding {logging-channel-adapter:_org.springframework.integration.errorLogger} as a subscriber to the 'errorChannel' channel
2021-04-19 12:02:07.631 INFO 28260 --- [ main] o.s.i.channel.PublishSubscribeChannel : Channel 'application.errorChannel' has 1 subscriber(s).
2021-04-19 12:02:07.631 INFO 28260 --- [ main] o.s.i.endpoint.EventDrivenConsumer : started bean '_org.springframework.integration.errorLogger'
2021-04-19 12:02:07.632 INFO 28260 --- [ main] o.s.c.s.binder.DefaultBinderFactory : Creating binder: rabbit
2021-04-19 12:02:07.740 INFO 28260 --- [ main] o.s.c.s.binder.DefaultBinderFactory : Caching the binder: rabbit
2021-04-19 12:02:07.740 INFO 28260 --- [ main] o.s.c.s.binder.DefaultBinderFactory : Retrieving cached binder: rabbit
2021-04-19 12:02:07.792 INFO 28260 --- [ main] c.s.b.r.p.RabbitExchangeQueueProvisioner : declaring queue for inbound: someQueue, bound to: someExhange
2021-04-19 12:02:07.793 INFO 28260 --- [ main] o.s.a.r.c.CachingConnectionFactory : Attempting to connect to: [localhost:5672]
2021-04-19 12:02:07.938 INFO 28260 --- [ main] o.s.a.r.c.CachingConnectionFactory : Created new connection: rabbitConnectionFactory#244e619a:0/SimpleConnection#73a0f2b [delegate=amqp://guest#127.0.0.1:5672/, localPort= 51143]
2021-04-19 12:02:07.991 INFO 28260 --- [ main] o.s.c.stream.binder.BinderErrorChannel : Channel 'someQueue.errors' has 1 subscriber(s).
2021-04-19 12:02:07.991 INFO 28260 --- [ main] o.s.c.stream.binder.BinderErrorChannel : Channel 'someQueue.errors' has 2 subscriber(s).
2021-04-19 12:02:08.002 INFO 28260 --- [ main] o.s.i.a.i.AmqpInboundChannelAdapter : started bean 'inbound.someQueue'
2021-04-19 12:02:08.010 INFO 28260 --- [ main] o.s.s.c.s.s.So67160902Application : Started So67160902Application in 1.659 seconds (JVM running for 2.147)
And I see this in the Rabbit MQ Management Console:
You probably miss some dependency or do something else in your configuration to prevent RabbitMQ Binder to do its stuff.
This is my deps, which are in the pom just generated from https://start.spring.io:
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-amqp</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-stream</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-stream-binder-rabbit</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.amqp</groupId>
<artifactId>spring-rabbit-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-stream</artifactId>
<scope>test</scope>
<classifier>test-binder</classifier>
<type>test-jar</type>
</dependency>
</dependencies>