Is it possible to chain multiple oracle GoldenGate for bigdata handlers?

Usecase: Tokenizing Sensitive Column Data via Custom Handler Implementation

 

We are currently using the “Oracle GoldenGate for Big Data - Kafka Connect Handler” to stream database changes to our Kafka cluster. Since some table columns contain sensitive information, we want to tokenize these values before they are sent to Kafka.

To achieve this, we attempted to implement a custom handler by extending the AbstractHandler class, as described in the guide available here ( We then added it to the handler list before kafkaconnect (e.g., gg.handlerlist=customhandler,kafkaconnect).

 

Our expectation was to modify column values in our custom handler and then pass them to the next handler in the list, i.e., kafkaconnect. However, we could not find a way to manipulate column values while implementing the custom handler.