Eventing

Each CRUD operation generates cloudevents from the data layer. Events are sent using an EventManager and a Producer.

To send an event, the data layer first uses the requester's identity and information about the resource to look up a Producer from the EventManager. The Lookup handles any complicated logic about selecting the correct Kafka topic and captures the decision in the Producer. The data layer then uses the Producer to send the event.

This package contains two implementations.

1. stdout dumps json encoded events to stdout
2. kafka sends a cloudevent to a Kafka topic