Sporadic ClassCircularityError when loading the app

[ivantopo]

I got a report of this exception during startup:

[ExpiringMap-Expirer] ERROR 2020-05-06 14:46:10 Logger : Error => java.util.concurrent.locks.AbstractQueuedSynchronizer$Node with message java/util/concurrent/locks/AbstractQueuedSynchronizer$Node. Class loader: Bootstrap ClassLoader: java.lang.ClassCircularityError: java/util/concurrent/locks/AbstractQueuedSynchronizer$Node
at java.base/java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:692)
at java.base/java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireShared(AbstractQueuedSynchronizer.java:1026)
at java.base/java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.lock(ReentrantReadWriteLock.java:738)
at kanela.agent.libs.net.jodah.expiringmap.ExpiringMap.getEntry(ExpiringMap.java:1243)
at kanela.agent.libs.net.jodah.expiringmap.ExpiringMap.get(ExpiringMap.java:742)
at kanela.agent.cache.PoolStrategyCache.locate(PoolStrategyCache.java:56)
at kanela.agent.libs.net.bytebuddy.agent.builder.AgentBuilder$PoolStrategy$WithTypePoolCache.typePool(AgentBuilder.java:2813)
at kanela.agent.libs.net.bytebuddy.agent.builder.AgentBuilder$Default$ExecutingTransformer.transform(AgentBuilder.java:10455)
at kanela.agent.libs.net.bytebuddy.agent.builder.AgentBuilder$Default$ExecutingTransformer.access$1500(AgentBuilder.java:10223)
at kanela.agent.libs.net.bytebuddy.agent.builder.AgentBuilder$Default$ExecutingTransformer$Java9CapableVmDispatcher.run(AgentBuilder.java:10907)
at kanela.agent.libs.net.bytebuddy.agent.builder.AgentBuilder$Default$ExecutingTransformer$Java9CapableVmDispatcher.run(AgentBuilder.java:10845)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
at kanela.agent.libs.net.bytebuddy.agent.builder.AgentBuilder$Default$ExecutingTransformer.transform(AgentBuilder.java:10413)
at kanela.agent.libs.net.bytebuddy.agent.builder.AgentBuilder$Default$ExecutingTransformer$ByteBuddy$ModuleSupport.transform(Unknown Source)
at java.instrument/sun.instrument.TransformerManager.transform(TransformerManager.java:188)
at java.instrument/sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:563)
at java.base/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:1650)
at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1182)
at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:899)
at java.base/java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1056)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1116)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630)
at java.base/java.lang.Thread.run(Thread.java:832)

It seems to be the same issue that was reported in #90 and fixed by #91. It just looks like we might be missing a few more types to pre-initialize, maybe ThreadLocalRandom as in the original implementation from glowroot.

[ivantopo]

After re-reading the thing, it seems we should have initialized java/util/concurrent/locks/AbstractQueuedSynchronizer$Node 🤦‍♂️