[23.1.0] Error creating a GraalJS Engine in a Spring Boot app

[vmutafov]

After migrating to 23.1.0 we've hit an issue stopping us from using this version without setting the polyglotimpl.DisableClassPathIsolation system property. The exception's stack trace is:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'createEngine' defined in com.vmutafov.ReproducerApplication: Failed to instantiate [org.graalvm.polyglot.Engine]: Factory method 'createEngine' threw exception with message: null
        at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:654) ~[spring-beans-6.0.12.jar!/:6.0.12]
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:488) ~[spring-beans-6.0.12.jar!/:6.0.12]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1332) ~[spring-beans-6.0.12.jar!/:6.0.12]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1162) ~[spring-beans-6.0.12.jar!/:6.0.12]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:560) ~[spring-beans-6.0.12.jar!/:6.0.12]
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:520) ~[spring-beans-6.0.12.jar!/:6.0.12]
        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:325) ~[spring-beans-6.0.12.jar!/:6.0.12]
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-6.0.12.jar!/:6.0.12]
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:323) ~[spring-beans-6.0.12.jar!/:6.0.12]
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-6.0.12.jar!/:6.0.12]
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:973) ~[spring-beans-6.0.12.jar!/:6.0.12]
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:942) ~[spring-context-6.0.12.jar!/:6.0.12]
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:608) ~[spring-context-6.0.12.jar!/:6.0.12]
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737) ~[spring-boot-3.1.4.jar!/:3.1.4]
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:439) ~[spring-boot-3.1.4.jar!/:3.1.4]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-3.1.4.jar!/:3.1.4]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1309) ~[spring-boot-3.1.4.jar!/:3.1.4]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1298) ~[spring-boot-3.1.4.jar!/:3.1.4]
        at com.vmutafov.ReproducerApplication.main(ReproducerApplication.java:12) ~[classes!/:0.0.1-SNAPSHOT]
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ~[na:na]
        at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[na:na]
        at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49) ~[graaljs-engine-create-error-reproducer-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:95) ~[graaljs-engine-create-error-reproducer-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) ~[graaljs-engine-create-error-reproducer-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
        at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:65) ~[graaljs-engine-create-error-reproducer-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.graalvm.polyglot.Engine]: Factory method 'createEngine' threw exception with message: null
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:171) ~[spring-beans-6.0.12.jar!/:6.0.12]
        at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:650) ~[spring-beans-6.0.12.jar!/:6.0.12]
        ... 24 common frames omitted
Caused by: java.lang.ExceptionInInitializerError: null
        at org.graalvm.polyglot.Engine.getImpl(Engine.java:438) ~[polyglot-23.1.0.jar!/:na]
        at org.graalvm.polyglot.Engine$Builder.build(Engine.java:736) ~[polyglot-23.1.0.jar!/:na]
        at org.graalvm.polyglot.Engine.create(Engine.java:346) ~[polyglot-23.1.0.jar!/:na]
        at com.vmutafov.ReproducerApplication.createEngine(ReproducerApplication.java:18) ~[classes!/:0.0.1-SNAPSHOT]
        at com.vmutafov.ReproducerApplication$$SpringCGLIB$$0.CGLIB$createEngine$0(<generated>) ~[classes!/:0.0.1-SNAPSHOT]
        at com.vmutafov.ReproducerApplication$$SpringCGLIB$$2.invoke(<generated>) ~[classes!/:0.0.1-SNAPSHOT]
        at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:258) ~[spring-core-6.0.12.jar!/:6.0.12]
        at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331) ~[spring-context-6.0.12.jar!/:6.0.12]
        at com.vmutafov.ReproducerApplication$$SpringCGLIB$$0.createEngine(<generated>) ~[classes!/:0.0.1-SNAPSHOT]
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) ~[na:na]
        at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[na:na]
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:139) ~[spring-beans-6.0.12.jar!/:6.0.12]
        ... 25 common frames omitted
Caused by: java.lang.NullPointerException: null
        at java.base/java.util.Objects.requireNonNull(Objects.java:233) ~[na:na]
        at java.base/sun.nio.fs.UnixFileSystem.getPath(UnixFileSystem.java:296) ~[na:na]
        at java.base/java.nio.file.Path.of(Path.java:148) ~[na:na]
        at org.graalvm.polyglot.Engine$ClassPathIsolation.collectClassPathJars(Engine.java:1988) ~[polyglot-23.1.0.jar!/:na]
        at org.graalvm.polyglot.Engine$ClassPathIsolation.createIsolatedTruffleModule(Engine.java:1783) ~[polyglot-23.1.0.jar!/:na]
        at org.graalvm.polyglot.Engine$ClassPathIsolation.createIsolatedTruffle(Engine.java:1723) ~[polyglot-23.1.0.jar!/:na]
        at org.graalvm.polyglot.Engine$1.searchServiceLoader(Engine.java:1682) ~[polyglot-23.1.0.jar!/:na]
        at org.graalvm.polyglot.Engine$1.run(Engine.java:1668) ~[polyglot-23.1.0.jar!/:na]
        at org.graalvm.polyglot.Engine$1.run(Engine.java:1663) ~[polyglot-23.1.0.jar!/:na]
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:319) ~[na:na]
        at org.graalvm.polyglot.Engine.initEngineImpl(Engine.java:1663) ~[polyglot-23.1.0.jar!/:na]
        at org.graalvm.polyglot.Engine$ImplHolder.<clinit>(Engine.java:186) ~[polyglot-23.1.0.jar!/:na]
        ... 37 common frames omitted

I've created a simple reproducer app here. Steps to run are in the readme.

From what I've debugged, the error is happening inside Engine$ClassPathIsolation::collectClassPathJars:

[chumer]

I can reproduce this problem. It looks like we do not handle spring boot style jars with multiple embedded jars very well currently.

A workaround can be to run using mvn spring-boot:run.
That should work.

[chumer]

Another workaround is to use:

java -Dpolyglotimpl.DisableClassPathIsolation=true -jar ./target/polyglot-demo-0.0.1-SNAPSHOT.jar

However that gets you this warning:

[engine] WARNING: The polyglot engine uses a fallback runtime that does not support runtime compilation to native code.
Execution without runtime compilation will negatively impact the guest application performance.
The following cause was found: Truffle was loaded from the class-path. Use Truffle from the module-path instead. Did you disable polyglot class-path isolation?
For more information see: https://www.graalvm.org/latest/reference-manual/embed-languages/.
To disable this warning use the '--engine.WarnInterpreterOnly=false' option or the '-Dpolyglot.engine.WarnInterpreterOnly=false' system property.

[chumer]

I talked to the spring-boot guys, and they recommend using executable jars.
That is not even a workaround, but also what is best for performance.
https://docs.spring.io/spring-boot/docs/current/reference/html/deployment.html#deployment.efficient.unpacking

[chumer]

23.1.2 fixes this problem. Make sure you also bump the version of your GraalVM JDK 21 to 21.0.2 as well!