Adapt AOT/native integration.

[patpatpat123]

Happy New Year 2023 Spring Data Elastic team!

Small issue regarding the new Spring Boot 3 with AOT/native/GraalVM please.

Lately, many talks regarding the new Spring Boot 3 are about the AOT/native/GraalVM.

I went to try migrating a project which was building without GraalVM, to this new paradigm so many are talking about.

Here is the straightforward code of the project (I am not attaching the jar, it is really just those files)

package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class DemoApplication {

	public static void main(String[] args) {
		SpringApplication.run(DemoApplication.class, args);
	}

}

package com.example.demo;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import reactor.core.publisher.Mono;

@RestController
public class ElasticController {

    private final ElasticRepository elasticRepository;

    @Autowired
    public ElasticController(ElasticRepository elasticRepository) {
        this.elasticRepository = elasticRepository;
    }

    @PostMapping(path = "/save", consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
    public Mono<String> save(@RequestBody ElasticPojo elasticPojo) {
        return elasticRepository.save(elasticPojo).map(__ -> "with graalVM, is is not working");
    }

}

package com.example.demo;

import org.springframework.data.repository.reactive.ReactiveCrudRepository;
import org.springframework.stereotype.Repository;

@Repository
public interface ElasticRepository extends ReactiveCrudRepository<ElasticPojo, String> {

}

package com.example.demo;

import org.springframework.context.annotation.Configuration;
import org.springframework.data.elasticsearch.client.ClientConfiguration;
import org.springframework.data.elasticsearch.client.elc.ReactiveElasticsearchConfiguration;

import java.time.Duration;

@Configuration
public class ElasticConfiguration extends ReactiveElasticsearchConfiguration {

    @Override
    public ClientConfiguration clientConfiguration() {
        return ClientConfiguration.builder().connectedTo("localhost:9200").withConnectTimeout(Duration.ofMinutes(2L)).withSocketTimeout(Duration.ofMinutes(2L)).build();
    }

}

package com.example.demo;

import org.springframework.data.annotation.Id;
import org.springframework.data.elasticsearch.annotations.Document;

@Document(indexName = "question")
public class ElasticPojo {

    @Id
    private String id;

    private String link;

    public ElasticPojo(String id, String link) {
        this.id = id;
        this.link = link;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getLink() {
        return link;
    }

    public void setLink(String link) {
        this.link = link;
    }

    @Override
    public String toString() {
        return "ElasticPojo{" +
                "id='" + id + '\'' +
                ", link='" + link + '\'' +
                '}';
    }

}

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>3.0.1</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.example</groupId>
	<artifactId>demo</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>demo</name>
	<description>Demo project for Spring Boot</description>
	<properties>
		<java.version>17</java.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-webflux</artifactId>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

</project>

The GraalVM version is: graalvm-ce-java17-22.3.0

I am building and running on Windows.

While running mvnw.cmd -Pnative native:compile the project builds fine, however, running the native image always yields this error:

target\demo.exe

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::                (v3.0.1)

2023-01-02T20:42:09.935+08:00  INFO 2860 --- [           main] com.example.demo.DemoApplication         : Starting AOT-processed DemoApplication using Java 17.0.5 with PID 2860 (C:\Users\...\demo\target\demo.exe started by xxxin ...\demo)
2023-01-02T20:42:09.935+08:00  INFO 2860 --- [           main] com.example.demo.DemoApplication         : No active profile set, falling back to 1 default profile: "default"
2023-01-02T20:42:09.991+08:00  WARN 2860 --- [           main] .r.c.ReactiveWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'elasticController': Unsatisfied dependency expressed through constructor parameter 0: Error creating bean with name 'elasticRepository': Cannot resolve reference to bean 'reactiveElasticsearchTemplate' while setting bean property 'reactiveElasticsearchOperations'
2023-01-02T20:42:10.005+08:00 ERROR 2860 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'elasticController': Unsatisfied dependency expressed through constructor parameter 0: Error creating bean with name 'elasticRepository': Cannot resolve reference to bean 'reactiveElasticsearchTemplate' while setting bean property 'reactiveElasticsearchOperations'
        at org.springframework.beans.factory.aot.BeanInstanceSupplier.resolveArgument(BeanInstanceSupplier.java:351) ~[na:na]
        at org.springframework.beans.factory.aot.BeanInstanceSupplier.resolveArguments(BeanInstanceSupplier.java:271) ~[na:na]
        at org.springframework.beans.factory.aot.BeanInstanceSupplier.get(BeanInstanceSupplier.java:206) ~[na:na]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.obtainInstanceFromSupplier(AbstractAutowireCapableBeanFactory.java:1225) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.obtainFromSupplier(AbstractAutowireCapableBeanFactory.java:1210) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1157) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:561) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:521) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:961) ~[demo.exe:6.0.3]
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:915) ~[demo.exe:6.0.3]
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:584) ~[demo.exe:6.0.3]
        at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.refresh(ReactiveWebServerApplicationContext.java:66) ~[demo.exe:3.0.1]
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:730) ~[demo.exe:3.0.1]
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:432) ~[demo.exe:3.0.1]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[demo.exe:3.0.1]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1302) ~[demo.exe:3.0.1]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1291) ~[demo.exe:3.0.1]
        at com.example.demo.DemoApplication.main(DemoApplication.java:10) ~[demo.exe:na]
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'elasticRepository': Cannot resolve reference to bean 'reactiveElasticsearchTemplate' while setting bean property 'reactiveElasticsearchOperations'
        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:377) ~[na:na]
        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:135) ~[na:na]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1663) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1412) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:598) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:521) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:254) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1405) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1325) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.aot.BeanInstanceSupplier.resolveArgument(BeanInstanceSupplier.java:334) ~[na:na]
        ... 21 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'reactiveElasticsearchOperations': Instantiation of supplied bean failed
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.obtainInstanceFromSupplier(AbstractAutowireCapableBeanFactory.java:1236) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.obtainFromSupplier(AbstractAutowireCapableBeanFactory.java:1210) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1157) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:561) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:521) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:365) ~[na:na]
        ... 34 common frames omitted
Caused by: java.lang.ExceptionInInitializerError: null
        at org.springframework.data.elasticsearch.core.AbstractReactiveElasticsearchTemplate.<init>(AbstractReactiveElasticsearchTemplate.java:93) ~[demo.exe:5.0.0]
        at org.springframework.data.elasticsearch.client.elc.ReactiveElasticsearchTemplate.<init>(ReactiveElasticsearchTemplate.java:84) ~[na:na]
        at org.springframework.data.elasticsearch.client.elc.ReactiveElasticsearchConfiguration.reactiveElasticsearchOperations(ReactiveElasticsearchConfiguration.java:84) ~[demo.exe:5.0.0]
        at com.example.demo.ElasticConfiguration$$SpringCGLIB$$0.CGLIB$reactiveElasticsearchOperations$3(<generated>) ~[demo.exe:na]
        at com.example.demo.ElasticConfiguration$$SpringCGLIB$$1.invoke(<generated>) ~[demo.exe:na]
        at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:258) ~[demo.exe:6.0.3]
        at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331) ~[na:na]
        at com.example.demo.ElasticConfiguration$$SpringCGLIB$$0.reactiveElasticsearchOperations(<generated>) ~[demo.exe:na]
        at org.springframework.data.elasticsearch.client.elc.ReactiveElasticsearchConfiguration__BeanDefinitions.lambda$getReactiveElasticsearchOperationsInstanceSupplier$2(ReactiveElasticsearchConfiguration__BeanDefinitions.java:61) ~[na:na]
        at org.springframework.util.function.ThrowingBiFunction.apply(ThrowingBiFunction.java:68) ~[demo.exe:6.0.3]
        at org.springframework.util.function.ThrowingBiFunction.apply(ThrowingBiFunction.java:54) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.aot.BeanInstanceSupplier.lambda$get$2(BeanInstanceSupplier.java:208) ~[na:na]
        at org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:59) ~[demo.exe:6.0.3]
        at org.springframework.util.function.ThrowingSupplier.get(ThrowingSupplier.java:47) ~[demo.exe:6.0.3]
        at org.springframework.beans.factory.aot.BeanInstanceSupplier.invokeBeanSupplier(BeanInstanceSupplier.java:220) ~[na:na]
        at org.springframework.beans.factory.aot.BeanInstanceSupplier.get(BeanInstanceSupplier.java:208) ~[na:na]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.obtainInstanceFromSupplier(AbstractAutowireCapableBeanFactory.java:1225) ~[demo.exe:6.0.3]
        ... 43 common frames omitted
Caused by: java.lang.IllegalStateException: Resource not found
        at org.springframework.data.elasticsearch.support.VersionInfo.loadVersionProperties(VersionInfo.java:108) ~[na:na]
        at org.springframework.data.elasticsearch.support.VersionInfo.<clinit>(VersionInfo.java:51) ~[na:na]
        ... 60 common frames omitted

To avoid confusion, I am building and running fine the same code with openJDK, and any other JDK. Actually, even with GraalVM, but not using the native, it compiles and runs fine.

Also, I tried similar code, with Mongo and Cassandra, both compile and running fine.

Only when compiling native, and running native, for Reactive Elastic, the issue occurs, 100% of the time.

Could you please help fixing this issue? Or maybe suggest what type of Registrar I need please?

Thank you

[sothawo]

I saw your StackOverflow question, but had no time to investigate further yet. The file in question is normally on the classpath, coming from src/main/resources, but I'll have to check how to add this to the configuration for a native build (I had no time yet to dig deeper into this topic).

[patpatpat123]

Hello @sothawo,

Many thanks for your time replying to this thread.
I thank you in advanced for the help provided.

Good day!

[sothawo]

There are obviously some configuration classes not yet implemented in Spring Data Elasticsearch in regard to native compilation. AOT/native wasn't the main target in the current release for Spring Data Elasticsearch - that was the integration of the new Elasticsearch client - so this was not noticed.

I know some people from VMware had a test in a branch of https://github.com/spring-projects/spring-aot-smoke-tests that used Spring Data Elasticsearch and I had some adjustment done for this, but no check for native compilation.

I locally have fixed the first errors that come up when starting a native compiled application, but am not finished on that yet.

If this will be a fix for version 5.0 or only something add to the next 5.1 I cannot yet tell, this depends on how much needs to be added, I'm working on it.

[sothawo]

Info: I got a branch with added configuration classes, with that I have a sample application running natively (imperative, not reactive, but that's not the problem). I'll need more tests for both the imperative and reactive versions, but won't be able to do it before the weekend. Will probably be added as bugfix to 5.0.x as well as to the main branch.

[patpatpat123]

Thank you @sothawo for the update.
My team and I are working with Spring Boot Webflux and Reactive ElasticSearch a lot.
For this issue, I took the time to take away everything else, so the example is "minimal reproducible".
If you have a fix ready (which I thank you again for), I will be glad to pull it.
I will first confirm the resolution on this "minimal example" and then, test with the overall full project.
Happy to help wherever I can!

[sothawo]

I will backport this to 5.0.x as well, hopefully later today