SpringBoot application stopped about 1 minute if exception occurred on starting - spring

Question

I have spring boot application that starts like this:`
SpringApplication.run(Application.class, args);
and there is component RabbitHandlers on the creation of which I get error:
Component
public class RabbitHandlers {
public RabbitHandlers(#Qualifier("rmq") CachingConnectionFactory cachingConnectionFactory) {
RabbitTemplate rabbitTemplate = new RabbitTemplate(initProducerConnectionFactory(cachingConnectionFactory));
try {
checkExchangeDeclared(rabbitTemplate, rabbitConfigHandler.getOutput().getExchange());
} catch (RabbitException ex) {
log.error(ex.getMessage());
rabbitTemplate.stop();
//this.consumerConnectionFactory.destroy();
throw ex;
}
}
private static void checkExchangeDeclared(RabbitTemplate rabbitTemplate, String exchange) {
AMQP.Exchange.DeclareOk execute = rabbitTemplate.execute(channel -> {
try {
return channel.exchangeDeclarePassive(exchange);
} catch (IOException ex) {
log.error("Exchange {} error: {}", exchange, ex.getMessage());
return null;
}
});
if (execute == null) {
throw new RabbitException(String.format("Exchange '%s' doesn't exist in vhost='%s'",
exchange,
rabbitTemplate.getConnectionFactory().getVirtualHost()));
}
}
private CachingConnectionFactory initProducerConnectionFactory(CachingConnectionFactory consumerConnectionFactory) {
// В CachingConnectionFactory фабрика коннектов есть всегда, но на всякий случай проверим.
if (!consumerConnectionFactory.hasPublisherConnectionFactory()) {
throw new RabbitException("ConnectionFactory for publisher is null");
}
return (CachingConnectionFactory) consumerConnectionFactory.getPublisherConnectionFactory();
}
}
My code creates CachingConnectionFactory:
#Bean("rmq")
#Scope("prototype")
CachingConnectionFactory getCachingConnectionFactory() {
return new CachingConnectionFactory();
}
In my case exception occured that leads to spring app stopped with error
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
[2023.01.18 01:06:17.284] [ERROR] [main] [org.springframework.boot.SpringApplication.reportFailure() at line 843]<-----><------>Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'rabbitHandlers' defined in URL [jar:file:/home/alpha_tech_user/workspa
<------>at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:315)
<------>at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:296)
<------>at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1372)
<------>at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1222)
<------>at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582)
<------>at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)
<------>at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
<------>at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
<------>at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
<------>at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
<------>at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944)
<------>at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918)
<------>at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583)
<------>at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145)
<------>at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:754)
<------>at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434)
<------>at org.springframework.boot.SpringApplication.run(SpringApplication.java:338)
<------>at org.springframework.boot.SpringApplication.run(SpringApplication.java:1343)
<------>at org.springframework.boot.SpringApplication.run(SpringApplication.java:1332)
<------>at com.application.Application.main(Application.java:16)
<------>at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
<------>at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
<------>at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
<------>at java.base/java.lang.reflect.Method.invoke(Method.java:566)
<------>at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49)
<------>at org.springframework.boot.loader.Launcher.launch(Launcher.java:108)
<------>at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
<------>at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88)
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.application.rabbitmq.RabbitHandlers]: Constructor threw exception;
<------>at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:224)
<------>at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:117)
<------>at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:311)
<------>... 27 common frames omitted
Caused by: com.application.exceptions.RabbitException: Exchange 'output' doesn't exist in vhost='vhost'
<------>at com.application.rabbitmq.RabbitHandlers.checkExchangeDeclared(RabbitHandlers.java:112)
<------>at com.application.rabbitmq.RabbitHandlers.<init>(RabbitHandlers.java:32)
<------>at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
<------>at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
<------>at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<------>at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
<------>at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:211)
<------>... 29 common frames omitted
The problem is that application doesn't stop immediately but only after 1 minute.
As I've understood, the problem is that then application context stopped it have to close
CachingConnectionFactory, but something is going wrong (
P.S. I think that problem is related to Spring Boot onApplicationEvent(ContextClosedEvent event) not called on in case of exception
But how to execute context.close() in my case?

Answer 1

checkExchangeDeclared(rabbitTemplate, rabbitConfigHandler.getOutput().getExchange());
You should not be doing this in the constructor.
Change RabbitHandlers to implement SmartLifecycle and check the exchange in the start() method instead.
Also
The problem is the prototype scope on the connection factory; prototype beans are not destroyed when the application context is closed. Add cachingConnectionFactory.destroy(); to the catch block.