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[milo-dev] WARN Failed to create DataTypeDictionary
  • From: Ari Suutari <ari.suutari@xxxxxxxxxxxxxxx>
  • Date: Wed, 29 Apr 2020 09:49:28 +0000
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  • Thread-topic: WARN Failed to create DataTypeDictionary

Hi,

 

I recently upgraded to milo 0.3.8 and noticed messages like these with one

PLC (OMRON Corporation NxOpcUaServer v. 1.0 1.02):

 

2020-04-29 12:20:20.922 [ForkJoinPool.commonPool-worker-1] WARN  Failed to create DataTypeDictionary nodeId=NodeId{ns=4, id=NX}

java.util.concurrent.CompletionException: javax.xml.bind.UnmarshalException

- with linked exception:

[org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; Premature end of file.]

        at java.util.concurrent.CompletableFuture.encodeRelay(CompletableFuture.java:326)

        at java.util.concurrent.CompletableFuture.completeRelay(CompletableFuture.java:338)

        at java.util.concurrent.CompletableFuture.uniRelay(CompletableFuture.java:911)

        at java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:953)

        at java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:926)

        at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474)

        at java.util.concurrent.CompletableFuture.postFire(CompletableFuture.java:561)

        at java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:929)

        at java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:443)

        at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)

        at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)

        at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)

        at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)

Caused by: javax.xml.bind.UnmarshalException: null

        at javax.xml.bind.helpers.AbstractUnmarshallerImpl.createUnmarshalException(AbstractUnmarshallerImpl.java:335)

        at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.createUnmarshalException(UnmarshallerImpl.java:578)

        at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:264)

        at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:229)

        at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:157)

        at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:204)

        at org.eclipse.milo.opcua.binaryschema.parser.BsdParser.parse(BsdParser.java:42)

        at org.eclipse.milo.opcua.sdk.client.DataTypeDictionaryReader.createDataTypeDictionary(DataTypeDictionaryReader.java:251)

        at org.eclipse.milo.opcua.sdk.client.DataTypeDictionaryReader.lambda$readDataTypeDictionary$6(DataTypeDictionaryReader.java:134)

        at java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:952)

        ... 9 common frames omitted

Caused by: org.xml.sax.SAXParseException: Premature end of file.

        at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)

 

There seems to be issue about this that the situation is now logged as warning:

https://github.com/eclipse/milo/issues/576

 

Should I assume that there is something wrong with PLC’s UA server ?

I tried to look at it with UA Expert, but didn’t figure out much.

 

   Ari S.

 

 

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