more details

We should determine whether we want to have this event listener be a small service that can be extended to consume messages from apps and write relations to the relations-api, or if we could/should use a Kafka connector/sink to handle this.

Update: We decided to try a Sink Connector using Kafka Connect. See:

• https://kafka.apache.org/documentation/#connect_development
• https://docs.confluent.io/platform/current/connect/devguide.html#connector-developer-guide