Reading encoded msg from cassandra and try to decode

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Lisa W

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Mar 4, 2019, 8:44:55 PM3/4/19

to ScalaPB

I'm connecting to Cassadra db to read some data, and one of the filed is encoded msg from protobuf in hex (example below). How can I convert them back to the original json string?

for example the hex msg like: "0A1D756D632E6372712E317A6A6F65643963617632773179716E386965777710011893FCB38BF52920012A0F79623A757365723A3231303138303132327B22646973706C61794E616D65223A2256697267696E696A61205065747275736F6E652028767065747275736F6E6529227D42620802AA065D0A21756D632E636D632E31766F3863666F71356262696962323135626C726E787370771228756D632E636D722E6974732E6D762E3531716C683261386B697872737672376D386F7472763367351A0E080512085374616E646172641A004A0E0893FCB38BF5291093FCB38BF529"

many thanks!

L.W.

Nadav Samet

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Mar 5, 2019, 1:28:49 AM3/5/19

to Lisa W, ScalaPB

Hi Lisa,

You can use something like org.apache.commons.codec.binary.Hex to convert the hex string into a byte array, and then decode it using the protobuf message's parseFrom method.

-Nadav

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