Details
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Bug Report
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Resolution: Unresolved
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L3 - Default
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None
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7.13.0
Description
As per https://docs.camunda.org/manual/7.14/reference/deployment-descriptors/tags/process-engine/#dmnFeelCustomFunctionProviders, you can define dmnFeelCustomFunctionProviders configuration of type list in process engine configuration. However, after it is defined in bpm-platform.xml, it throws an error.
bpm-platform.xml
<property name="dmnFeelCustomFunctionProviders">CustomFunctionProvider</property>
Error
23-Sep-2021 16:37:08.194 SEVERE [main] org.apache.catalina.startup.Catalina.start The required Server component failed to start so Tomcat is unable to start. org.apache.catalina.LifecycleException: Failed to start component [StandardServer[8005]] at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198) at org.apache.catalina.startup.Catalina.start(Catalina.java:772) 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:567) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:342) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:473) Caused by: org.camunda.bpm.engine.ProcessEngineException: ENGINE-08043 Exception while performing 'deploy BPM platform' => 'Start process engine default': ENGINE-08039 Cannot set property 'dmnFeelCustomFunctionProviders' on instance of class 'org.camunda.bpm.engine.impl.cfg.StandaloneProcessEngineConfiguration' at org.camunda.bpm.container.impl.ContainerIntegrationLogger.exceptionWhilePerformingOperationStep(ContainerIntegrationLogger.java:316) at org.camunda.bpm.container.impl.spi.DeploymentOperation.execute(DeploymentOperation.java:136) at org.camunda.bpm.container.impl.jmx.MBeanServiceContainer.executeDeploymentOperation(MBeanServiceContainer.java:160) at org.camunda.bpm.container.impl.spi.DeploymentOperation$DeploymentOperationBuilder.execute(DeploymentOperation.java:216) at org.camunda.bpm.container.impl.tomcat.TomcatBpmPlatformBootstrap.deployBpmPlatform(TomcatBpmPlatformBootstrap.java:83) at org.camunda.bpm.container.impl.tomcat.TomcatBpmPlatformBootstrap.lifecycleEvent(TomcatBpmPlatformBootstrap.java:61) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123) at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:423) at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:366) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:923) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ... 7 more Caused by: org.camunda.bpm.engine.ProcessEngineException: ENGINE-08039 Cannot set property 'dmnFeelCustomFunctionProviders' on instance of class 'org.camunda.bpm.engine.impl.cfg.StandaloneProcessEngineConfiguration' at org.camunda.bpm.container.impl.ContainerIntegrationLogger.cannotSetValueForProperty(ContainerIntegrationLogger.java:285) at org.camunda.bpm.container.impl.metadata.PropertyHelper.applyProperty(PropertyHelper.java:91) at org.camunda.bpm.container.impl.metadata.PropertyHelper.applyProperties(PropertyHelper.java:110) at org.camunda.bpm.container.impl.deployment.StartProcessEngineStep.performOperationStep(StartProcessEngineStep.java:101) at org.camunda.bpm.container.impl.spi.DeploymentOperation.execute(DeploymentOperation.java:120) ... 16 more Caused by: java.lang.IllegalArgumentException: argument type mismatch 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:567) at org.camunda.bpm.container.impl.metadata.PropertyHelper.applyProperty(PropertyHelper.java:88)
We should change the description of the property in https://docs.camunda.org/manual/7.14/reference/deployment-descriptors/tags/process-engine/#dmnFeelCustomFunctionProviders to something like:
Define a list of instances of FeelCustomFunctionProvider. You can only set this property programmatically. Read more about it in the user guide.
Also in https://docs.camunda.org/manual/7.14/user-guide/dmn-engine/feel/custom-functions/#process-engine, we should may be give an example code to register this property via plugin.
Note
Registering this property via Plugin works.
mgm-controller-panel
This is the controller panel for Smart Panels app
Attachments
Issue Links
- is related to
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CAM-14210 Restructure the process engine configuration properties page in the docs
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- Open
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