Calix ONOS Contribution Native applications are written in Java External applications use the REST API May be written in any language. Not possible to receive notifications Native apps are written in Java No notifications from ONOS, so external apps serve limited use cases

Calix ONOS Contribution Problem statement: Currently there is no notifications infrastructure for non-native, non-Java apps, so external apps serve limited use cases Solution: Add a Kafka based notification infrastructure for non-Java apps Release demo here Kafka integration allows existing and new applications written in virtually any language to integrate with the ONOS SDN controller via Kafka clients. Apache Kafka