Spring Auto Reconfiguration & Spring Cloud Connectors Deprecation Notice

[dmikusa]

As was communicated on Slack, Github, and now with the latest Java Buildpack Release Notes (v4.49). Support for the Spring Auto Reconfiguration and Spring Cloud Connectors has been deprecated.

The buildpack will start by warning all users that have these features enabled. After Aug 2022, the buildpack will default to disabling these features and it will require users to explicitly opt into using them. After Dec 2022, all support for them will be removed.

The path forward is to use java-cfenv in your application. There CloudFoundry docs have instructions & migration information for users coming from Spring Cloud Connectors & Auto Reconfiguration.

This issue has been opened as an announcement and as a location for users to post feedback. Please feel free to post comments below or on Slack.

[coffee-squirrel]

FYI-- we've had a couple teams get bitten by the following:

• Including a java-cfenv dependency
• Assuming activation of the cloud profile will "just happen"
• SAR not getting added due to java-cfenv JARs existing, thus no activation of cloud

We've advised them of how to fix the immediate issue (explicitly include cloud when deploying), and this behavior is mentioned in the migration guide, but going solely off of the v4.49 release notes one could reasonably assume no change in behavior until August 2022.

[dmikusa]

Thanks @coffee-squirrel, you're 100% correct that I missed that change in the release notes. Apologies. I have updated the release notes to mention the feature change and to also bring more attention to the fact that the cloud profile needs to be manually enabled going forward.

Hopefully that will help with folks performing the migration going forward.

[pivotal-david-osullivan]

Just an update on this issue - we are extending the deprecation period until 2023/2024. This will give users more time to follow the migration guide and switch to java-cfenv.

Starting with the next release, Spring Auto Reconfiguration will be enabled by default as it was up to 4.51 and warnings will continue to be logged if the library is injected by the buildpack. The buildpack will default to disabling these features after the new date of March 2023 (explicit opt-in still possible), with the removal planned for a release after March 2024.

[andrewpolemeni]

Could we possibly enhance the documentation? Like a 1-to-1 comparison of old vs new with examples. Maybe a sample spring boot application to show what's changed. Not sure if I need to add that CfEnv bean and replace my vcap properties with cfEnv.findCredentialsByTag. A good example of how to make the docs better would be:

REMOVED	REPLACEMENT	DETAILS
REMOVED	REPLACEMENT	Explain why it's been removed.

[dmarmugi]

The buildpack will default to disabling these features after the new date of March 2023

I haven't seen this in the release notes -- did this happen or has the date slipped? Is there a new target date?

[dmarmugi]

Hi, the v4.62.0 Release Notes state:

... This release adds a new framework, java_cf_env which supplies the Java CfEnv library to Spring Boot 3 apps, instead of the deprecated Spring AutoReconfiguration library.

Spring Boot 2 apps will continue to receive the Spring AutoReconfiguration library for the life of Spring Boot 2.x, whereas Spring Boot 3 users will now receive Java CfEnv as an app dependency...

This conflicts with what was stated in this issue:

...all support for them will be removed...

Is my understanding correct that the v4.62.0 buildpack release and its described deprecation timeline supersedes this one?

[dev-praveen]

We have a spring boot application (version 1.5.9.RELEASE) that is deployed in PCF and works fine. We are trying to migrate it to java-cfenv-boot library by following the migration guide and removing the dependencies it suggests. However, we encounter a problem with the centralized configuration. The application fails to get the placeholder values from the Spring Cloud Config Server (bound to PCF).
This is the error we get: [OUT] Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder ‘some.value’ in value “${some.value}”

removed
org.springframework.boot:spring-boot-starter-cloud-connectors
or
org.springframework.cloud:spring-cloud-core
org.springframework.cloud:spring-cloud-connectors-core
org.springframework.cloud:spring-cloud-cloudfoundry-connector
org.springframework.cloud:spring-cloud-spring-service-connector dependencies from pom file

added

io.pivotal.cfenv java-cfenv-boot 2.4.0

spring.profiles.active: dev,cloud
JBP_CONFIG_SPRING_AUTO_RECONFIGURATION: '{enabled: false}'

and we use java_buildpack_offline Please suggest to fix the issue.

[anthonydahanne]

hello @dev-praveen !
Unfortunately, you don't provide a lot of details (no logs nor manifest for your spring app deployment in Tanzu Application Service) and you refer to a Spring Boot version that was deprecated... 3 years ago...
I'd suggest you migrate to latest supported spring boot version and retry

[dev-praveen]

@anthonydahanne thanks for the reply below is manifest file and logs.

applications:

• name: application-name
  path: target/application-name-0.0.1.jar
  instances: 1
  services:

  • dev-application-mysql
  • dev-application-config-server
  • dev-application-credsmanager
  • dev-application-activemq

  buildpack: java_buildpack_offline

  routes:

  • route: dev-application.com
  • route: dev-application.com

  stack: cflinuxfs3
  env:
  spring.profiles.active: dev,cloud
  JBP_CONFIG_SPRING_AUTO_RECONFIGURATION: '{enabled: false}'

2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'callbackServiceNavigator': Unsatisfied dependency expressed through field 'applicationThreadPoolExecutor'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scopedTarget.springAsyncConfig': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'threadpool.corepool.size' in value "${threadpool.corepool.size}"
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:588)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at com.telstra.asset.service.migration.TRAMASApplication.main(TRAMASApplication.java:37)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at java.lang.reflect.Method.invoke(Method.java:498)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.boot.loader.Launcher.launch(Launcher.java:87)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.boot.loader.Launcher.launch(Launcher.java:50)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'scopedTarget.springAsyncConfig': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'threadpool.corepool.size' in value "${threadpool.corepool.size}"
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:372)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractBeanFactory$2.getObject(AbstractBeanFactory.java:345)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.cloud.context.scope.GenericScope$BeanLifecycleWrapper.getBean(GenericScope.java:359)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.cloud.context.scope.GenericScope.get(GenericScope.java:176)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:340)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:372)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1173)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1067)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:208)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:585)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] ... 27 common frames omitted
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'threadpool.corepool.size' in value "${threadpool.corepool.size}"
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:174)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:126)
2024-01-29T12:02:58.633+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.core.env.AbstractPropertyResolver.doResolvePlaceholders(AbstractPropertyResolver.java:236)
2024-01-29T12:02:58.634+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.core.env.AbstractPropertyResolver.resolveRequiredPlaceholders(AbstractPropertyResolver.java:210)
2024-01-29T12:02:58.634+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.context.support.PropertySourcesPlaceholderConfigurer$2.resolveStringValue(PropertySourcesPlaceholderConfigurer.java:172)
2024-01-29T12:02:58.634+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:831)
2024-01-29T12:02:58.634+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1086)
2024-01-29T12:02:58.634+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066)
2024-01-29T12:02:58.634+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:585)
2024-01-29T12:02:58.634+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
2024-01-29T12:02:58.634+05:30 [APP/PROC/WEB/0] [OUT] at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366)
2024-01-29T12:02:58.634+05:30 [APP/PROC/WEB/0] [OUT] ... 48 common frames omitted
2024-01-29T12:02:58.973+05:30 [APP/PROC/WEB/0] [OUT] Exit status 1

[dev-praveen]

Hi
Few more observations to the previous one, after removing

org.springframework.boot:spring-boot-starter-cloud-connectors
or
org.springframework.cloud:spring-cloud-core
org.springframework.cloud:spring-cloud-connectors-core
org.springframework.cloud:spring-cloud-cloudfoundry-connector
org.springframework.cloud:spring-cloud-spring-service-connector

dependencies from the project. Application couldn't able to locate the real config server and it is fall back to localhost
024-02-08T17:22:22.762+05:30 [APP/PROC/WEB/0] [OUT] 2024-02-08 11:52:22.761 INFO 8 --- [ main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at: http://localhost:8888
2024-02-08T17:22:22.892+05:30 [APP/PROC/WEB/0] [OUT] 2024-02-08 11:52:22.892 WARN 8 --- [ main] c.c.c.ConfigServicePropertySourceLocator : Could not locate PropertySource: I/O error on GET request for "http://localhost:8888/application/dev,cloud": Connection refused (Connection refused); nested exception is java.net.ConnectException: Connection refused (Connection refused)
2024-02-08T17:22:22.895+05:30 [APP/PROC/WEB/0] [OUT] 2024-02-08 11:52:22.895 INFO 8 --- [ main] c.t.a.s.migration.Application : The following profiles are active: dev,cloud

with the above dependencies in the project belwo are the logs:

2024-01-25T12:52:52.305+05:30 [APP/PROC/WEB/0] [OUT] 2024-01-25 07:22:52.305 INFO 7 --- [ main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at: https://config-server-11121121a-fdec-4ba5-c654-5ccff667744.apps.np.app.com

2024-01-25T12:52:54.122+05:30 [APP/PROC/WEB/0] [OUT] 2024-01-25 07:22:54.122 INFO 7 --- [ main] b.c.PropertySourceBootstrapConfiguration : Located property source: CompositePropertySource [name='configService', propertySources=[MapPropertySource {name='credhub-app-dev-master'}, MapPropertySource {name='credhub-app-dev-master'}, MapPropertySource {name='ssh://mirror@10.100.100.8:22/var/vcap/store/mirror/8475euhfjy348573857rjhgdfjh745647/davinci-config/davinci-app-dev.properties'}, MapPropertySource {name='ssh://mirror@10.100.100.8:22/var/vcap/store/mirror/8475euhfjy348573857rjhgdfjh745647/davinci-config/application.properties'}]]

please help us why after removing recommended dependencies from the documentation application is not able to locate the real config server.