in core/src/main/java/org/apache/rocketmq/streams/core/running/AbstractProcessor.java [153:163]
protected String toHexString(Object source) throws JsonProcessingException {
if (source == null) {
return null;
}
if (source instanceof String) {
return (String) source;
}
byte[] sourceByte = this.object2Byte(source);
return Utils.toHexString(sourceByte);
}