https://github.com/codecentric/event-based-shopping-system
Event-Based-Shopping-System using Spring Boot and Apache Kafka (based on Movie Database @TobiasFlohre)
https://github.com/codecentric/event-based-shopping-system
Last synced: 10 months ago
JSON representation
Event-Based-Shopping-System using Spring Boot and Apache Kafka (based on Movie Database @TobiasFlohre)
- Host: GitHub
- URL: https://github.com/codecentric/event-based-shopping-system
- Owner: codecentric
- License: mit
- Created: 2015-09-25T11:38:22.000Z (over 10 years ago)
- Default Branch: master
- Last Pushed: 2015-10-17T15:33:13.000Z (over 10 years ago)
- Last Synced: 2025-03-29T13:35:16.685Z (11 months ago)
- Language: Java
- Homepage:
- Size: 2.45 MB
- Stars: 18
- Watchers: 10
- Forks: 22
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
## Event-Based-Shopping-System (EBSS)
This project is a proof of concept for an event-based-shopping-system (EBSS) using Spring Boot and Apache Kafka. As a result of an article by Tobias Flohre, we decided to implement the event-based-system described in the blog. For more information I suggest you read up the article first.
### Links
- Blog article by Tobias Flohre https://blog.codecentric.de/2015/09/wer-microservices-richtig-macht-braucht-keine-workflow-engine-und-kein-bpmn/
- Inspiration: Movie Database https://github.com/tobiasflohre/movie-database
- Apache Kafka http://kafka.apache.org/
## Overview
The final infrastructure will look like the following diagram:
## Getting started
You can use docker to get Kafka and Zookeeper up and running, or install the tools manually.
### Automatically install Apache Kafka via docker
Clone repository:
```
git clone git@github.com:wurstmeister/kafka-docker.git
cd kafka-docker
```
Start a cluster:
```
docker-compose up -d
```
Add more brokers:
```
docker-compose scale kafka=3
```
Destroy a cluster:
```
docker-compose stop
```
### Manually install Apache Kafka
Download code
```
wget http://mirror.netcologne.de/apache.org/kafka/0.8.2.0/kafka_2.10-0.8.2.0.tgz
tar -xzf kafka_2.10-0.8.2.0.tgz
cd kafka_2.10-0.8.2.0
```
Start Zookeeper
```
bin/zookeeper-server-start.sh config/zookeeper.properties
```
Start Kafka server
```
bin/kafka-server-start.sh config/server.properties
```
### Use Kafka & Zookeeper
Before you can use Kafka and Zookeeper you need to figure out the right ports. Use *docker-compose ps* to find the dynamically created ports for all docker containers.
Each Spring Boot App contains a application.properties under *src/resources*. It is important that you update the port to match your local infrastructure, before using the Spring Boot Apps.
```
~/git/kafka-docker$ docker-compose ps
Name Command State Ports
----------------------------------------------------------------------------------------------------------------------
kafkadocker_kafka_1 /bin/sh -c start-kafka.sh Up 0.0.0.0:32777->9092/tcp
kafkadocker_kafka_2 /bin/sh -c start-kafka.sh Up 0.0.0.0:32778->9092/tcp
kafkadocker_kafka_3 /bin/sh -c start-kafka.sh Up 0.0.0.0:32779->9092/tcp
kafkadocker_zookeeper_1 /bin/sh -c /usr/sbin/sshd ... Up 0.0.0.0:32776->2181/tcp, 22/tcp, 2888/tcp, 3888/tcp
```
Step 1: Create a topic
Let's create a topic named "test" with a single partition and only one replica:
```
bin/kafka-topics.sh --create --zookeeper 192.168.99.100:32776 --replication-factor 1 --partitions 1 --topic test
```
We can now see that topic if we run the list topic command:
```
bin/kafka-topics.sh --list --zookeeper 192.168.99.100:32770
test
```
Step 2: Run the produces to send some messages
Run the producer and then type a few messages into the console to send to the server.
```
bin/kafka-console-producer.sh --broker-list 192.168.99.100:32777 --topic test
This is a message
This is another message
```
Step 3: Start a consumer
```
bin/kafka-console-consumer.sh --zookeeper 192.168.99.100:32776 --topic test --from-beginning
This is a message
This is another message
```
For more details see http://kafka.apache.org/documentation.html#quickstart
## Maven projects
To build all Maven projects please run:
```
mvn clean install
```
To start the Spring Boot Apps use:
```
mvn spring-boot:run
```