Cannot deserialize `UUID` values

[uniquonil]

Hi.
Using jackson-dataformat-protobuf:2.16.2, though we can serialize java.util.UUID, we CAN'T deserialize.

import com.fasterxml.jackson.dataformat.protobuf.ProtobufMapper;

import java.io.IOException;
import java.util.Arrays;
import java.util.UUID;

public class JacksonProtobufUUID {
    final static class Pojo {
        public UUID id;
    }

    public static void main (String[] args) throws IOException {
        var mapper = new ProtobufMapper();
        var schema = mapper.generateSchemaFor(Pojo.class);

        var pojo = new Pojo();
        pojo.id = UUID.randomUUID();
        System.out.println(pojo.id);

        var serialized = mapper.writer(schema).writeValueAsBytes(pojo);
        System.out.println(Arrays.toString(serialized));

        var deserialized = mapper.reader(schema).readValue(serialized, Pojo.class);
        System.out.println(deserialized.id);
    }
}

This code results below:

993ea091-6eb4-429d-a8f0-540d4b18419e
[10, 16, -103, 62, -96, -111, 110, -76, 66, -99, -88, -16, 84, 13, 75, 24, 65, -98]
Exception in thread "main" com.fasterxml.jackson.databind.JsonMappingException: Invalid byte 99 in Unicode text block
 at [Source: (byte[])[18 bytes]; byte offset: #18] (through reference chain: JacksonProtobufUUID$Pojo["id"])
	at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:402)
	at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:361)
	at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.wrapAndThrow(BeanDeserializerBase.java:1937)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:312)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:177)
	at com.fasterxml.jackson.databind.deser.DefaultDeserializationContext.readRootValue(DefaultDeserializationContext.java:342)
	at com.fasterxml.jackson.databind.ObjectReader._bindAndClose(ObjectReader.java:2125)
	at com.fasterxml.jackson.databind.ObjectReader.readValue(ObjectReader.java:1603)
	at com.fasterxml.jackson.databind.ObjectReader.readValue(ObjectReader.java:1618)
	at JacksonProtobufUUID.main(JacksonProtobufUUID.java:23)
Caused by: com.fasterxml.jackson.core.JsonParseException: Invalid byte 99 in Unicode text block
 at [Source: (byte[])[18 bytes]; byte offset: #18]
	at com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:2481)
	at com.fasterxml.jackson.core.base.ParserMinimalBase._reportError(ParserMinimalBase.java:752)
	at com.fasterxml.jackson.dataformat.protobuf.ProtobufParser._finishShortText(ProtobufParser.java:1944)
	at com.fasterxml.jackson.dataformat.protobuf.ProtobufParser.getValueAsString(ProtobufParser.java:1390)
	at com.fasterxml.jackson.databind.deser.std.FromStringDeserializer.deserialize(FromStringDeserializer.java:148)
	at com.fasterxml.jackson.databind.deser.impl.FieldProperty.deserializeAndSet(FieldProperty.java:138)
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:310)
	... 6 more

Is this expected behavior?

[cowtowncoder]

No, sounds like a bug. Looks like UUID value is correctly serialized as 16-byte "raw" value, but deserialization side expects String, tries to decode as such.

Since 2.16 is not the latest version, could try with 2.17.2, but I doubt behavior is different.

[uniquonil]

Thank you for your responding.
I tried with 2.17.2 and yes, I got same result.
I'll go with workaround such as serializing as string representation or two long values(sigBits) or something.

[cowtowncoder]

Re-opened since there might be something to do here.

[uniquonil]

Ah I closed by mistake, sorry.

[cowtowncoder]

Turned out quite simple to fix, via #507; merged in 2.17 (for eventual 2.17.3), 2.18 (2.18.0).

[uniquonil]

Is there any chance that bug-fix comes down to 2.16?
I cannot upgrade easily because of my using framework's dependency.

[cowtowncoder]

Technically I could merge back down to 2.16, but it's unlikely I'll be releasing updates to 2.16 branch (all full minor releases take 2-3 hours).

I will backport/cherry-pick the fix tho just in case.