Unable to parse json bytes containing WrappedMessage

[ryanemerson]

Reading JSON bytes will fail if the original Protobuf bytes contain a WrappedMessage.

var bytes = ProtobufUtil.toWrappedByteArray(ctx, new WrappedMessage(1), 512);
var json = ProtobufUtil.toCanonicalJSON(ctx, bytes);
var jsonBytes = ProtobufUtil.fromCanonicalJSON(ctx, new StringReader(json));

Throws:

java.lang.IllegalStateException: The field '_value' was not found in the Protobuf schema
	at org.infinispan.protostream.impl.JsonUtils.processObject(JsonUtils.java:256)
	at org.infinispan.protostream.impl.JsonUtils.processDocument(JsonUtils.java:150)
	at org.infinispan.protostream.impl.JsonUtils.fromCanonicalJSON(JsonUtils.java:89)
	at org.infinispan.protostream.ProtobufUtil.fromCanonicalJSON(ProtobufUtil.java:196)

[ryanemerson]

It appears that the root cause of the issue is that the original JSON representation for a WrappedMessage does not contain sufficient information for the object to be recreated and will actually produce an invalid JSON object if the message contained within WrappedMessage consists of multiple fields.

For example, WrappedMessage(UUID) will result in the following invalid JSON being generated:

{"_type":"org.infinispan.protostream.WrappedMessage","_value":1005,"_value":"GdJNvZMpmrhJIVsBI+w5SN6O"}