Start kafka with zookeper, refer to kafka quickstart

Kafka should be started with default properties (zookeper port 2181, and etc)

refer to Kafka Binder Properties

Create custom topic "msg_output":

bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic msg_output

Run listener for this topic:

bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic msg_output --from-beginning

Run server test MessageSenderTest

In console tab for kafka listener new message should appear

Test message

Build project (skip tests if you haven't started kafka)

mvn clean install -DskipTests=true

Start message server

cd server
mvn spring-boot:run -Dserver.port=8081 -Dinstance.conf=file:conf/server.default.properties -Dlog4j.configuration=file:conf/log4j.properties

Create postgres db 'messages'

spring.datasource.url=jdbc:postgresql://localhost:5432/messages
spring.datasource.username=postgres
spring.datasource.password=postgres

Start message client

cd client
mvn spring-boot:run -Dinstance.conf=file:src/main/resources/application.properties -Dlog4j.configuration=file:conf/log4j.properties

Send some messages

curl -H "Content-Type: application/json" -X POST -d '[{"title":"Hello","text":"Hello World!","author":"User","created":"2017-10-17"}]' http://localhost:8081/api/v1/messages

response

 {"status":"SUCCESS","statusCode":0,"successful":true}