Error in configuring javaagent in Spring Boot application

[Murali.Sriraman]

I configured the javaagent for the springboot application with the exact steps in the Getting Started wizard, however, when I start the spring boot application, I am getting below error.  The agent is not getting started and the application is not getting detected by appdynamics.  Can you please help resolve.   Thanks.

Java 9+ detected, booting with Java9Util enabled.
Full Agent Registration Info Resolver using selfService [true]
Full Agent Registration Info Resolver using selfService [true]
Full Agent Registration Info Resolver using ephemeral node setting [false]
Full Agent Registration Info Resolver using application name [Create User]
Full Agent Registration Info Resolver using tier name [app-tier]
Full Agent Registration Info Resolver using node name [laptop]
Install Directory resolved to[C:\dev\code\spring-boot-rest-api-tutorial-master\appagent]
getBootstrapResource not available on ClassLoader
Class with name [com.ibm.lang.management.internal.ExtendedOperatingSystemMXBeanImpl] is not available in classpath, so will ignore export access.
java.lang.ClassNotFoundException: Unable to load class io.opentelemetry.sdk.resources.ResourceProvider
at com.singularity.ee.agent.appagent.kernel.classloader.Post19AgentClassLoader.findClass(Post19AgentClassLoader.java:73)
at com.singularity.ee.agent.appagent.kernel.classloader.AgentClassLoader.loadClassInternal(AgentClassLoader.java:422)
at com.singularity.ee.agent.appagent.kernel.classloader.Post17AgentClassLoader.loadClassParentLast(Post17AgentClassLoader.java:69)
at com.singularity.ee.agent.appagent.kernel.classloader.AgentClassLoader.loadClass(AgentClassLoader.java:320)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:398)
at com.singularity.ee.agent.appagent.AgentEntryPoint.createJava9Module(AgentEntryPoint.java:796)
at com.singularity.ee.agent.appagent.AgentEntryPoint.premain(AgentEntryPoint.java:632)
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 java.instrument/sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:513)
at java.instrument/sun.instrument.InstrumentationImpl.loadClassAndCallPremain(InstrumentationImpl.java:525)
java.lang.reflect.InvocationTargetException
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 com.singularity.ee.agent.appagent.AgentEntryPoint$1.run(AgentEntryPoint.java:649)
Caused by: java.lang.IllegalAccessError: class org.apache.logging.log4j.core.LoggerContext (in module com.appdynamics.appagent) cannot access class java.beans.PropertyChangeEvent (in module java.desktop) because module com.appdynamics.appagent does not read module java.desktop
at com.appdynamics.appagent/org.apache.logging.log4j.core.LoggerContext.updateLoggers(LoggerContext.java:657)
at com.appdynamics.appagent/org.apache.logging.log4j.core.LoggerContext.updateLoggers(LoggerContext.java:644)
at com.appdynamics.appagent/org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:550)
at com.appdynamics.appagent/org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:620)
at com.appdynamics.appagent/org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:637)
at com.appdynamics.appagent/org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:231)
at com.appdynamics.appagent/org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:243)
at com.appdynamics.appagent/org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:45)
at com.appdynamics.appagent/org.apache.logging.log4j.LogManager.getContext(LogManager.java:174)
at com.appdynamics.appagent/org.apache.logging.log4j.LogManager.getLogger(LogManager.java:648)
at com.appdynamics.appagent/com.singularity.ee.agent.util.log4j.ADLoggerFactory.getLogger(ADLoggerFactory.java:61)
at com.appdynamics.appagent/com.singularity.ee.agent.util.bounded.collections.BoundsEnforcer.<clinit>(BoundsEnforcer.java:53)
at com.appdynamics.appagent/com.singularity.ee.agent.util.bounded.collections.BoundsEnforcer$Builder.build(BoundsEnforcer.java:388)
at com.appdynamics.appagent/com.singularity.ee.agent.util.bounded.collections.BoundedConcurrentReferenceHashMap.<init>(BoundedConcurrentReferenceHashMap.java:73)
at com.appdynamics.appagent/com.singularity.ee.agent.util.bounded.collections.BoundedConcurrentReferenceHashMapBuilder.build(BoundedConcurrentReferenceHashMapBuilder.java:114)
at com.appdynamics.appagent/com.singularity.ee.agent.util.reflect.ReflectionUtility.<clinit>(ReflectionUtility.java:154)
at com.appdynamics.appagent/com.singularity.ee.agent.appagent.kernel.JavaAgent.setLog4j2LoaderUtilDisabled(JavaAgent.java:332)
at com.appdynamics.appagent/com.singularity.ee.agent.appagent.kernel.JavaAgent.setupLog4J2(JavaAgent.java:607)
at com.appdynamics.appagent/com.singularity.ee.agent.appagent.kernel.JavaAgent.initialize(JavaAgent.java:359)
at com.appdynamics.appagent/com.singularity.ee.agent.appagent.kernel.JavaAgent.initialize(JavaAgent.java:346)
... 5 more

Process finished with exit code -1

[Ryan.Paredez]

Hello @Akshit.Chaturvedi.,

I followed up with some people and I was told this. 

Download agent JDK8+
https://accounts.appdynamics.com/downloads

Turns out the Installer Wizzard was sending people to an older download. 

Please let me know if that works for you.

[Akshit.Chaturvedi]

Hi @Ryan.Paredez ,
We are already using JDK8+JVM ver 22.12.0. 

[Akshit.Chaturvedi]

To provide more context this is the exact error:

```

'orgCache' threw exception; nested exception is java.lang.IllegalAccessError: class jdk.jfr.internal.SecuritySupport$$Lambda$1168/0x0000000100f17440 (in module jdk.jfr) cannot access class com.singularity.ee.agent.appagent.entrypoint.bciengine.FastMethodInterceptorDelegatorBoot (in unnamed module @0x1996cd68) because module jdk.jfr does not read unnamed module @0x1996cd68 

```

It seems `com.singularity.ee.agent.appagent.entrypoint.bciengine.FastMethodInterceptorDelegatorBoot` class (which comes from  AppD) has been placed inside an unnamed module, if that module could given a name, we could access it and deploy our service.

[Ryan.Paredez]

Hi @Akshit.Chaturvedi,

Please try adding this 

--add-reads jdk.jfr=ALL-UNNAMED 

[Akshit.Chaturvedi]

Thanks for your suggestion @Ryan.Paredez ,
I think giving jdk.jfr access to all unnamed modules is a security flaw, it would be appreciated if the module containing com.singularity.ee.agent.appagent could be a given a name in the next patch.

Thanks!