search

highmed / highmed-dsf

HiGHmed Data Sharing Framework funded by the German Federal Ministry of Education and Research (BMBF, grant ids: 01ZZ1802E and 01ZZ1802A)
Apache License 2.0
32 stars 20 forks source link

BPE: Camunda classcloading fails on deserialization after timer intermediateCatchEvent #372

Closed schwzr closed 1 year ago

schwzr commented 2 years ago

In DSF Version 0.7.0 you receive an error if you try to use a process variable (e.g. with delegateExecution.getVariable) that uses a custom (data) class present in your plugin after a timer intermediateCatchEvent (possibly others as well).

A simple example:

image

The error does not occur if you omit the timer event.

The data class can be used in the service class, but not in the camunda deserialization features as they (may) use another classloader.

A guess: Camunda executes the tasks that follow each other directly (e.g. direct invocation), so the loaded classes by the BPE are present, and the correct classloaders are set, ... . The same happens if a message event continues a process instance, as you are in control to start it. The camunda engine controls a timer event itself, so it will continue the flow and load the classes by itself.

Stacktrace ``` 2022-09-23 23:47:58,580 [pool-2-thread-2] DEBUG org.highmed.dsf.bpe.delegate.AbstractServiceDelegate - Error while executing service delegate SOME_SERVICE_CLASS org.camunda.bpm.engine.ProcessEngineException: Cannot deserialize object in variable 'SOME_VARIABLE': ENGINE-09017 Cannot load class 'SOME_CLASS:SOME_CLASS' at org.camunda.bpm.engine.impl.variable.serializer.AbstractSerializableValueSerializer.readValue(AbstractSerializableValueSerializer.java:85) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.variable.serializer.AbstractSerializableValueSerializer.readValue(AbstractSerializableValueSerializer.java:31) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.util.TypedValueField.getTypedValue(TypedValueField.java:105) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.VariableInstanceEntity.getTypedValue(VariableInstanceEntity.java:278) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.core.variable.scope.AbstractVariableScope.getValueFromVariableInstance(AbstractVariableScope.java:142) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.core.variable.scope.AbstractVariableScope.getVariable(AbstractVariableScope.java:129) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.core.variable.scope.AbstractVariableScope.getVariable(AbstractVariableScope.java:125) ~[camunda-engine-7.17.0.jar:7.17.0] at SOME_SERVICE_CLASS.doExecute(SOME_SERVICE_CLASS.java:61) ~[?:?] at org.highmed.dsf.bpe.delegate.AbstractServiceDelegate.execute(AbstractServiceDelegate.java:58) ~[dsf-bpe-process-base-0.7.0.jar:0.7.0] at org.camunda.bpm.engine.impl.bpmn.delegate.JavaDelegateInvocation.invoke(JavaDelegateInvocation.java:40) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.delegate.DelegateInvocation.proceed(DelegateInvocation.java:58) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.delegate.DefaultDelegateInterceptor.handleInvocationInContext(DefaultDelegateInterceptor.java:92) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.delegate.DefaultDelegateInterceptor.handleInvocation(DefaultDelegateInterceptor.java:63) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.bpmn.behavior.ServiceTaskJavaDelegateActivityBehavior.execute(ServiceTaskJavaDelegateActivityBehavior.java:55) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.bpmn.behavior.ServiceTaskJavaDelegateActivityBehavior.performExecution(ServiceTaskJavaDelegateActivityBehavior.java:44) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.bpmn.behavior.TaskActivityBehavior.execute(TaskActivityBehavior.java:69) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.bpmn.behavior.ClassDelegateActivityBehavior$1.call(ClassDelegateActivityBehavior.java:68) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.bpmn.behavior.ClassDelegateActivityBehavior$1.call(ClassDelegateActivityBehavior.java:65) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.bpmn.behavior.AbstractBpmnActivityBehavior.executeWithErrorPropagation(AbstractBpmnActivityBehavior.java:90) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.bpmn.behavior.ClassDelegateActivityBehavior.execute(ClassDelegateActivityBehavior.java:65) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationActivityExecute$2.callback(PvmAtomicOperationActivityExecute.java:61) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationActivityExecute$2.callback(PvmAtomicOperationActivityExecute.java:50) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.continueIfExecutionDoesNotAffectNextOperation(PvmExecutionImpl.java:2072) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationActivityExecute.execute(PvmAtomicOperationActivityExecute.java:42) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationActivityExecute.execute(PvmAtomicOperationActivityExecute.java:31) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:99) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:131) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:111) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:86) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:623) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:597) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl$6.callback(PvmExecutionImpl.java:2011) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl$6.callback(PvmExecutionImpl.java:2008) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.continueExecutionIfNotCanceled(PvmExecutionImpl.java:2078) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.dispatchDelayedEventsAndPerformOperation(PvmExecutionImpl.java:2027) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.dispatchDelayedEventsAndPerformOperation(PvmExecutionImpl.java:2008) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationTransitionNotifyListenerStart.eventNotificationsCompleted(PvmAtomicOperationTransitionNotifyListenerStart.java:61) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationTransitionNotifyListenerStart.eventNotificationsCompleted(PvmAtomicOperationTransitionNotifyListenerStart.java:30) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.core.operation.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:66) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:99) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:131) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:111) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:86) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:76) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:632) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:607) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.core.operation.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:62) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:99) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:131) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:111) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:86) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:76) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:632) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:607) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.core.operation.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:62) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:99) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:131) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:111) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:86) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:623) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:597) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationTransitionCreateScope.scopeCreated(PvmAtomicOperationTransitionCreateScope.java:38) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationCreateScope.execute(PvmAtomicOperationCreateScope.java:54) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationCreateScope.execute(PvmAtomicOperationCreateScope.java:28) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:99) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:131) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:118) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:86) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:623) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:597) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.take(PvmExecutionImpl.java:790) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationTransitionDestroyScope.execute(PvmAtomicOperationTransitionDestroyScope.java:89) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationTransitionDestroyScope.execute(PvmAtomicOperationTransitionDestroyScope.java:37) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:99) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:131) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:111) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:86) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:623) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:597) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationTransitionNotifyListenerEnd$1.callback(PvmAtomicOperationTransitionNotifyListenerEnd.java:54) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationTransitionNotifyListenerEnd$1.callback(PvmAtomicOperationTransitionNotifyListenerEnd.java:49) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.continueExecutionIfNotCanceled(PvmExecutionImpl.java:2078) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.dispatchDelayedEventsAndPerformOperation(PvmExecutionImpl.java:2027) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationTransitionNotifyListenerEnd.eventNotificationsCompleted(PvmAtomicOperationTransitionNotifyListenerEnd.java:49) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationTransitionNotifyListenerEnd.eventNotificationsCompleted(PvmAtomicOperationTransitionNotifyListenerEnd.java:29) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.core.operation.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:66) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:99) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:131) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:111) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:86) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:76) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:632) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:607) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.core.operation.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:62) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:99) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:131) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:111) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:86) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:76) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:632) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperationSync(ExecutionEntity.java:607) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.core.operation.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:62) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:99) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:131) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:111) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:86) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:623) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:597) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.leaveActivityViaTransitions(PvmExecutionImpl.java:1072) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.leaveActivityViaTransition(PvmExecutionImpl.java:1004) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.bpmn.behavior.BpmnActivityBehavior.performOutgoingBehavior(BpmnActivityBehavior.java:101) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.bpmn.behavior.BpmnActivityBehavior.performDefaultOutgoingBehavior(BpmnActivityBehavior.java:55) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.doLeave(FlowNodeActivityBehavior.java:56) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.bpmn.behavior.AbstractBpmnActivityBehavior.doLeave(AbstractBpmnActivityBehavior.java:62) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationActivityLeave.execute(PvmAtomicOperationActivityLeave.java:56) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationActivityLeave.execute(PvmAtomicOperationActivityLeave.java:32) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.AtomicOperationInvocation.execute(AtomicOperationInvocation.java:99) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.invokeNext(CommandInvocationContext.java:131) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performNext(CommandInvocationContext.java:111) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandInvocationContext.performOperation(CommandInvocationContext.java:86) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:623) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:597) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl$6.callback(PvmExecutionImpl.java:2011) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl$6.callback(PvmExecutionImpl.java:2008) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.continueExecutionIfNotCanceled(PvmExecutionImpl.java:2078) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.dispatchDelayedEventsAndPerformOperation(PvmExecutionImpl.java:2027) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.dispatchDelayedEventsAndPerformOperation(PvmExecutionImpl.java:2008) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.leave(FlowNodeActivityBehavior.java:52) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.bpmn.behavior.IntermediateCatchEventActivityBehavior.signal(IntermediateCatchEventActivityBehavior.java:50) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl.signal(PvmExecutionImpl.java:772) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.jobexecutor.TimerCatchIntermediateEventJobHandler.execute(TimerCatchIntermediateEventJobHandler.java:44) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.jobexecutor.TimerCatchIntermediateEventJobHandler.execute(TimerCatchIntermediateEventJobHandler.java:27) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.persistence.entity.JobEntity.execute(JobEntity.java:133) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.cmd.ExecuteJobsCmd.execute(ExecuteJobsCmd.java:110) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.cmd.ExecuteJobsCmd.execute(ExecuteJobsCmd.java:43) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:28) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:110) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:72) ~[camunda-engine-spring-7.17.0.jar:7.17.0] at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140) ~[spring-tx-5.3.21.jar:5.3.21] at org.camunda.bpm.engine.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:70) ~[camunda-engine-spring-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.ProcessApplicationContextInterceptor.execute(ProcessApplicationContextInterceptor.java:70) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.CommandCounterInterceptor.execute(CommandCounterInterceptor.java:35) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.jobexecutor.ExecuteJobHelper.executeJob(ExecuteJobHelper.java:57) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.jobexecutor.ExecuteJobsRunnable.executeJob(ExecuteJobsRunnable.java:110) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.jobexecutor.ExecuteJobsRunnable.run(ExecuteJobsRunnable.java:71) ~[camunda-engine-7.17.0.jar:7.17.0] at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) ~[?:?] at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) ~[?:?] at java.lang.Thread.run(Unknown Source) ~[?:?] Caused by: org.camunda.bpm.engine.ClassLoadingException: ENGINE-09017 Cannot load class 'SOME_CLASS': SOME_CLASS at org.camunda.bpm.engine.impl.util.EngineUtilLogger.classLoadingException(EngineUtilLogger.java:145) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.util.ReflectUtil.loadClass(ReflectUtil.java:111) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.variable.serializer.JavaObjectSerializer$ClassloaderAwareObjectInputStream.resolveClass(JavaObjectSerializer.java:96) ~[camunda-engine-7.17.0.jar:7.17.0] at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readClassDesc(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readObject0(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readObject(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readObject(Unknown Source) ~[?:?] at java.util.ArrayList.readObject(Unknown Source) ~[?:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:?] at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:?] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:?] at java.io.ObjectStreamClass.invokeReadObject(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readSerialData(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readObject0(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readObject(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readObject(Unknown Source) ~[?:?] at java.util.HashMap.readObject(Unknown Source) ~[?:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:?] at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:?] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:?] at java.io.ObjectStreamClass.invokeReadObject(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readSerialData(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readObject0(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readObject(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readObject(Unknown Source) ~[?:?] at org.camunda.bpm.engine.impl.variable.serializer.JavaObjectSerializer.deserializeFromByteArray(JavaObjectSerializer.java:59) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.variable.serializer.AbstractObjectValueSerializer.deserializeFromByteArray(AbstractObjectValueSerializer.java:119) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.variable.serializer.AbstractSerializableValueSerializer.readValue(AbstractSerializableValueSerializer.java:83) ~[camunda-engine-7.17.0.jar:7.17.0] ... 148 more Caused by: java.lang.ClassNotFoundException: SOME_CLASS at jdk.internal.loader.BuiltinClassLoader.loadClass(Unknown Source) ~[?:?] at jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(Unknown Source) ~[?:?] at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:?] at java.lang.Class.forName0(Native Method) ~[?:?] at java.lang.Class.forName(Unknown Source) ~[?:?] at org.camunda.bpm.engine.impl.util.ReflectUtil.loadClass(ReflectUtil.java:88) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.variable.serializer.JavaObjectSerializer$ClassloaderAwareObjectInputStream.resolveClass(JavaObjectSerializer.java:96) ~[camunda-engine-7.17.0.jar:7.17.0] at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readClassDesc(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readObject0(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readObject(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readObject(Unknown Source) ~[?:?] at java.util.ArrayList.readObject(Unknown Source) ~[?:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:?] at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:?] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:?] at java.io.ObjectStreamClass.invokeReadObject(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readSerialData(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readObject0(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readObject(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readObject(Unknown Source) ~[?:?] at java.util.HashMap.readObject(Unknown Source) ~[?:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:?] at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:?] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:?] at java.io.ObjectStreamClass.invokeReadObject(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readSerialData(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readObject0(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readObject(Unknown Source) ~[?:?] at java.io.ObjectInputStream.readObject(Unknown Source) ~[?:?] at org.camunda.bpm.engine.impl.variable.serializer.JavaObjectSerializer.deserializeFromByteArray(JavaObjectSerializer.java:59) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.variable.serializer.AbstractObjectValueSerializer.deserializeFromByteArray(AbstractObjectValueSerializer.java:119) ~[camunda-engine-7.17.0.jar:7.17.0] at org.camunda.bpm.engine.impl.variable.serializer.AbstractSerializableValueSerializer.readValue(AbstractSerializableValueSerializer.java:83) ~[camunda-engine-7.17.0.jar:7.17.0] ... 148 more ```
hhund commented 2 years ago

When using custom objects to communicate information between BPMN Tasks a custom variable serializer is needed. Did you create / register the necessary custom serializer classes? See https://github.com/highmed/highmed-processes/tree/main/dsf-bpe-process-feasibility/src/main/java/org/highmed/dsf/bpe/variables for an example.