Lombok copyable annotations not working with spring graalvm native

[ArjanSchouten]

The lombok feature lombok.copyableannotations (https://projectlombok.org/features/constructor) together with a RequiredArgsConstructor and a Spring @Value annotation do not work with the following code:

@ToString
@Component
@RequiredArgsConstructor
public class NotWorking {
    @Value("${graalvm.native.is}")
    public final String springGraalNativeIs;
}

However this works:

@ToString
@Component
public class Working {
    public final String springGraalNativeIs;

    public Working(@Value("${graalvm.native.is}")
                       String springGraalNativeIs) {
        this.springGraalNativeIs = springGraalNativeIs;
    }
}

The output when building with graalvm native is:

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-11-24 20:29:31.777 ERROR 1 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'work.NotWorking': Injection of autowired dependencies failed; nested exception is java.lang.IllegalAccessException: Cannot set final field: com.example.demo.Work$NotWorking.springGraalNativeIs. Enable by specifying "allowWrite" for this field in the reflection configuration.
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:405) ~[com.example.demo.DemoApplication:5.3.1]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1415) ~[na:na]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:608) ~[na:na]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531) ~[na:na]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[na:na]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[na:na]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[na:na]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[na:na]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944) ~[na:na]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:925) ~[na:na]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:588) ~[na:na]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767) ~[na:na]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) ~[na:na]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) ~[na:na]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) ~[na:na]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1309) ~[na:na]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1298) ~[na:na]
	at com.example.demo.DemoApplication.main(DemoApplication.java:16) ~[com.example.demo.DemoApplication:na]
Caused by: java.lang.IllegalAccessException: Cannot set final field: com.example.demo.Work$NotWorking.springGraalNativeIs. Enable by specifying "allowWrite" for this field in the reflection configuration.
	at java.lang.reflect.Field.set(Field.java:780) ~[na:na]
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:667) ~[na:na]
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119) ~[na:na]
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) ~[com.example.demo.DemoApplication:5.3.1]
	... 17 common frames omitted

Steps to reproduce (requires docker):

git clone git@github.com:ArjanSchouten/lombok-value-constructor.git
cd lombok-value-constructor
./gradlew clean bootRun # This works and logs the expected results

# Following doesn't work as expected
./gradlew clean bootBuildImage
docker run --name demo demo:0.0.1-SNAPSHOT

Is this a bug in spring-graalvm-native?

Spring-graalvm-native version: 0.8.3
Spring boot version: 2.4.0
Java version: 11.0.9

[aclement]

Yes I think we could do better here. If you want your app to work, place this in src/main/resources/META-INF/native-image/reflect-config.json:

[
{
  "name":"com.example.demo.Work$NotWorking",
  "allDeclaredFields":true,
  "fields": [
          {"name":"springGraalNativeIs","allowWrite": true }
  ],
  "allDeclaredMethods":true,
  "allDeclaredConstructors":true
}
]

[ArjanSchouten]

Thanks. Isn't it more a general issue with Lombok? For example using Lombok with Jackson won't work without a reflect-config.json.

[sdeleuze]

Lombok generally work well with Spring Native, it is possible that some Lombok feature will require some configuration. See for example a52d9f1 where we added a sample and some Lombok hint. For now you can just define native hints on your application. If you think something deserves dedicated support after testing the latest Spring Native version, please create a new issue with an attached repro project.