$schema: ./schema.json kafka: kafka1: brokers: - 127.0.0.1:9092 client_id: "kaboom" version: "0.10.2.0" timeout: 10s rules: test1: in: - kafka: kafka1 topic: [ "topic1" ] group_name: "kaboom" transformation: | { "result": in.first + " " + in.second } - kafka: kafka1 topic: [ "topic2" ] group_name: "kaboom" transformation: | { "result": in.a + " " + in.b } out: - kafka: kafka1 topic: ["result"] timeout: 10s