java-tutorials/spring-kafka
Jonathan Cook cfb424f9d1 BAEL-4609 - Testing Kafka and Spring Boot (#10249)
* BAEL-4437 - System Rules

* BAEL-4687 Testing Kafka and Spring Boot

* BAEL-4609 - Testing Kafka and Spring Boot

Co-authored-by: Jonathan Cook <jcook@sciops.esa.int>
2020-11-13 10:31:59 -08:00
..
src BAEL-4609 - Testing Kafka and Spring Boot (#10249) 2020-11-13 10:31:59 -08:00
README.md Merge pull request #8125 from eugenp/revert-8119-BAEL-3275-2 2019-10-31 20:43:47 -05:00
pom.xml BAEL-4609 - Testing Kafka and Spring Boot (#10249) 2020-11-13 10:31:59 -08:00

README.md

Spring Kafka

This module contains articles about Spring with Kafka

Relevant articles

Intro

This is a simple Spring Boot app to demonstrate sending and receiving of messages in Kafka using spring-kafka.

As Kafka topics are not created automatically by default, this application requires that you create the following topics manually.

$ bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic baeldung
$ bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 5 --topic partitioned
$ bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic filtered
$ bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic greeting

When the application runs successfully, following output is logged on to console (along with spring logs):

Message received from the 'baeldung' topic by the basic listeners with groups foo and bar

Received Message in group 'foo': Hello, World!
Received Message in group 'bar': Hello, World!

Message received from the 'baeldung' topic, with the partition info

Received Message: Hello, World! from partition: 0

Message received from the 'partitioned' topic, only from specific partitions

Received Message: Hello To Partioned Topic! from partition: 0
Received Message: Hello To Partioned Topic! from partition: 3

Message received from the 'filtered' topic after filtering

Received Message in filtered listener: Hello Baeldung!

Message (Serialized Java Object) received from the 'greeting' topic

Received greeting message: Greetings, World!!