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mendix / OPC-UA-Connector

Connector module to communicate with an OPC UA Server
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Not able to browse Kepware OPC Server #1

Open hazaart opened 3 years ago

hazaart commented 3 years ago

I have added a connection to an OPC-UA enabled local KepServer instance. The connection has been configured and the 'test connection' button returns succes.

However, when browsing for the nodes, reading or writing, only exceptions are occuring.

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The full stacktrace for browsing the root node from a clean Kepware installation:

com.mendix.systemwideinterfaces.MendixRuntimeException: java.lang.NullPointerException at com.mendix.basis.actionmanagement.ActionManagerBase.executeSync(ActionManagerBase.java:156)

Caused by: java.lang.NullPointerException at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:30)

Caused by: null at org.eclipse.milo.opcua.stack.core.types.builtin.NodeId.parse(NodeId.java:361) at opcuaclientmx.actions.OpcUaRead.executeAction(OpcUaRead.java:49) at opcuaclientmx.actions.OpcUaRead.executeAction(OpcUaRead.java:25) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:46) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:71) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:49) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:54) at com.mendix.basis.actionmanagement.ActionManagerBase$1.execute(ActionManagerBase.java:147) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:26) at com.mendix.basis.actionmanagement.ActionManagerBase.executeSync(ActionManagerBase.java:152) at com.mendix.basis.actionmanagement.UserActionCallBuilderImpl.execute(UserActionCallBuilderImpl.scala:30) at com.mendix.modules.microflowengine.actions.actioncall.JavaAction.execute(JavaAction.scala:56) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.$anonfun$execute$1(MicroflowObject.scala:32) at scala.Option.flatMap(Option.scala:283) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.scala:29) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.$anonfun$executeAfterBreakingIfNecessary$2(MicroflowImpl.scala:172) at scala.Option.flatMap(Option.scala:283) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.scala:172) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.scala:119) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:46) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:71) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:49) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:54) at com.mendix.basis.actionmanagement.DefaultActionMonitor$.$anonfun$run$1(CustomMonitoredAction.scala:18) at com.mendix.basis.actionmanagement.IMonitoredAction$$anon$1.execute(IMonitoredAction.scala:47) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:26) at com.mendix.basis.actionmanagement.IMonitoredAction.monitor(IMonitoredAction.scala:49) at com.mendix.basis.actionmanagement.IMonitoredAction.monitor$(IMonitoredAction.scala:25) at com.mendix.basis.actionmanagement.CustomMonitoredAction.monitor(CustomMonitoredAction.scala:22) at com.mendix.basis.actionmanagement.DefaultActionMonitor$.run(CustomMonitoredAction.scala:18) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.runMonitoredAction(CoreActionHandlerImpl.scala:60) at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:47) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:54) at com.mendix.basis.actionmanagement.ActionManager.$anonfun$execute$1(ActionManager.scala:118) at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:672) at scala.concurrent.impl.Promise$Transformation.run(Promise.scala:431) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:834)

jaspervanderhoek commented 2 years ago

I don't have access to a Kepware server, would you be able to share some additional details with me so I can reproduce this? I think I've pinpointed the problem during the initial browse the NodeId isn't correctly being set but I don't see why.

Would you be able to place a breakpoint in microflow: 'OpcUaNode_Browse_TopLevel' and share with me the String variable 'BrowseResult' that is the output of the Browse activity. If you could provide that to me I can troubleshoot with that info.