Microservices Demo

It is a demo project where we created two services and configured communication via Kafka.

• Producer service takes jokes from third party service and sends them to Kafka.
• Consumer service takes jokes from Kafka and saves them to MongoDB.

Build JARs

Create JAR artifacts for producer and consumer. Execute command in corresponded folder:

mvn clean package

JAR file will be created in target folder.

Build docker images

Each service has Dockerfile to create the docker image (producer and consumer).
Commands to create docker images:

docker build -t buharovalexander/microservices-demo-producer:latest ./producer
docker build -t buharovalexander/microservices-demo-consumer:latest ./consumer

Commands to push images into dockerhub:

docker push buharovalexander/microservices-demo-producer:latest
docker push buharovalexander/microservices-demo-consumer:latest

Launch using docker-compose

You can use Docker Compose to fast deploy (configuration).

docker-compose up

This command starts next containers:

• Zookeeper
• Kafka
• MongoDB
• Producer
• Consumer

Launch using k8s

Minikube was used to test deploy (Helm configuration). Manage Minikube:

minikube status|start|stop

Deploy the demo project into Minikube:

helm install my-release ./helm-chart

This command starts next deployments and services:

• Zookeeper
• Kafka
• MongoDB
• Producer
• Consumer

Command to get access to services:

minikube service producer-service consumer-service

Test services

Send HTTP request GET-/jokes/random/send to producer and a random joke will be saved into MongoDB.
Send HTTP request GET-/jokes/list to consumer and you will get list of saved jokes.