Playground: Akka Streams + Kafka
This sample project is a playground to experiment with connecting Akka Streams to Kafka using Reactive Kafka.
Pre-requisite
A running Kafka on localhost:9092 with a topic called test created.
Follow the Kafka Quickstart to get Kafka to run on your machine and topic created.
A single broker is sufficient for this project, i.e. no need to start multiple broker cluster.
How to run
Ensure the following is running on a separate terminal:
$ bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic testThis will display the message you are entering via STDIN after it's been routed through Kafka.
Simple STDIN stream to Kafka
$ sbt "run-main test.Simple"STDIN to Kafka via Actor
$ sbt "run-main test.ViaActor"The test.ViaActor has test.actor.KafkaPublish actor encapsulates a single stream to Kafka. This provides the following additional functionality:
- Allows reconnecting to Kafka should there be failure.
- Caches the message to be published until connectivity to Kafka is established.