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pratik.p.mehta avatar image
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Unknown MsgClass

What do these mean

Can you please suggest how to handle these? I am using version

<dependency>
    <groupId>reuters</groupId>
    <artifactId>upa</artifactId>
    <version>8.0.0.L1.all.rrg</version>
</dependency>

I see that this is called inside Decoders.java and there is a switch block

static int decodeMsg(DecodeIterator iterInt, Msg msg)
try
{
    decodeMsgHeader(iter, msg);
}
catch (Exception e)
{
    return CodecReturnCodes.INCOMPLETE_DATA;
}

and inside this decodeMsgHeader is where I think this Unknown Class is being printed in default switch case

default:
    System.out.println("Unknown msgClass: " + msg.msgClass());
    assert (false);

INFO 09-Apr-20 12:09:06,086 () com.thomsonreuters.upa.codec.D - Unknown msgClass: 4

INFO 09-Apr-20 12:09:06,180 () com.thomsonreuters.upa.codec.D - Unknown msgClass: 29

INFO 09-Apr-20 12:09:08,557 () com.thomsonreuters.upa.codec.D - Unknown msgClass: 12

INFO 09-Apr-20 12:09:17,645 () com.thomsonreuters.upa.codec.D - Unknown msgClass: 0

INFO 09-Apr-20 12:09:23,938 () com.thomsonreuters.upa.codec.D - Unknown msgClass: 0v

elektronrefinitiv-realtimeelektron-sdkjava
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wasin.w avatar image   wasin.w

Hello @pratik.p.mehta

Thank you for your participation in the forum. Is the reply below satisfactory in resolving your query?


If so please can you click the 'Accept' text next to the appropriate reply. This will guide all community members who have a similar question.

Thanks,


AHS

Jirapongse avatar image   Jirapongse

@pratik.p.mehta

Hi,

Please let us know if you have any update on this question.

If it is still an issue, please post again to offer further insight into your question.

Regards,

AHS

wasin.w avatar image   wasin.w

Please be informed that a reply has been verified as correct in answering the question, and has been marked as such.

Thanks,


AHS


1 Answer

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Jirapongse avatar image
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@pratik.p.mehta

It seems that the UPA is unable to decode those buffers because those contain invalid message classes.

To verify this issue, you may need to print the hex strings of those buffers.

You can use the code from Stack Overflow to convert a byte array to a hex string.

int position = buffer.data().position();
byte[] b = new byte[buffer.data().remaining()];
buffer.data().get(b);
System.out.println(bytesToHex(b));
buffer.data().position(position);


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pratik.p.mehta avatar image pratik.p.mehta

Sure, thank you, let me do that.

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