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Re: [milo-dev] WARN Failed to create DataTypeDictionary
Ari,

What version did you update from? Can you turn the DataTypeDictionaryReader logger to DEBUG and post the dictionary XMLs that get read? Or capture this on Wireshark?

It does seem like something wrong with the PLC but I'd like to verify.

On Wed, Apr 29, 2020 at 2:50 AM Ari Suutari <ari.suutari@xxxxxxxxxxxxxxx> wrote:

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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