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“Microservices Architecture” example with many concepts and technologies put in place and combined within a whole system composed with different microservices. Some patterns, tools and technologies that you will see in this system:

Spring Boot, Spring Data, Spring Cloud Eureka, Load Balancing with Ribbon, Declarative REST Clients with Feign, Software Circuit Breakers with Hystrix, Monitoring using Hystrix dashboard and Turbine, Administrating using Spring admin, Log management with Elastic search, Logstash and Kibana (ELK), Server load balancing with Nginx, Infrastructure management with Docker-compose, JMX application monitoring, Security with Spring Security OAuth, Oauth2 with JWT, Aspect Oriented Programing, Distributed events with Kafka, Maven Multimodule project, Event Sourcing, CQRS, REST, Web Sockets, Continuous deploy with Jenkins, and all developed using Java 8.

• run package-projects.sh
• run docker-orchestrate.sh
• docker-compose -f infra-docker-compose.yml -p todo up (wait until all services be up)
• docker-compose -p todo up

We have created a docker image in order to have continuous deploy in our project here.

This image will contain all necessary to build our project, create the Docker images and deploy on AWS using ECS containers.

To make this integration easy, we have added the Jenkinsfile with the steps necessary to have the Docker image built. To use it, you will need just to configure a Job on Jenkins using Pipeline plugin and paste the content of the Jenkinsfile in the Pipeline script box. Have a look at this video to check how to work with Jenkins pipeline

• Authenticate -> curl -X POST -vu todo-app:123456 http://localhost:8017/oauth/token -H "Accept: application/json" -d "password=1234&username=apssouza22@gmail.com&grant_type=password&scope=write&client_secret=123456&client_id=todo-app"

• Get data using the access_token -> localhost:8018/accounts?access_token={access_token} or curl -H "Authorization: Bearer $TOKEN" "localhost:8018/path"

NGINX will be configured for browser caching of the static content and Load balance. For that we will need to scale our App Gateway and update manually the ports in default.conf file, in the upstream configuration section:

upstream backend {
  server gateway:8018;
  server gateway:DYNAMICPORT;
  server gateway:DYNAMICPORT;
}

And we will run the compose file with --scale parameter:

docker-compose -f proxy-docker-compose.yml -p todo up --scale gateway=2

Monitoring stream - http://localhost:8022/turbine.stream

To-dos http://localhost:8015/todos

Users http://localhost:8016/accounts

Eureka server - http://localhost:8010/

Config server - http://localhost:8888/

Boot admin - http://localhost:8026

Kimbana - http://localhost:5601

Elasticsearch Info: http://localhost:9200

Elasticsearch Status: http://localhost:9200/_status?pretty

NGINX Status: localhost:8055/nginx_status

docker-compose -p todo up docker-compose -p todo down

• In order to make ELK work we need to reserve 3GB RAM to docker(docker settings - advanced - memory )
• Have a look at the Readme of each service/ module to see the explanation about it.
• On Kimbana create a filter called filebeat-* to see the logs

curl -d '{"userEmail":"alex@test.com", "caption":"post caption", "description":"desc", "priority": 1}' -H "Content-Type: application/json" -X POST http://localhost:8015/todos

# running separated container and link to the network infrastructure
docker run -d -p 8026:8026  --network todo_net --add-host eureka:172.19.0.3 todo/admin-server

# orchestrate start-up of containers, tailing the logs...
docker-compose -p music up -d container-name && docker logs elk --follow # ^C to break

# stopping containers
docker-compose todo stop
docker-compose todo down

# starting containers
docker-compose -p todo up

# removing containers
docker-compose todo rm

# stop / start Tomcat
docker exec -it container-name sh /usr/local/tomcat/bin/startup.sh
docker exec -it container-name sh /usr/local/tomcat/bin/shutdown.sh

# check logs for start-up issues...
docker exec -it container-name cat /usr/local/tomcat/logs/catalina.out
docker logs container-name

# event consume
/opt/kafka/bin/kafka-console-consumer.sh --zookeeper zookeeper:2181 --topic todo-mail --from-beginning

# producer console
/opt/kafka/bin/kafka-console-producer.sh --broker-list kafka:9092 --topic todo-mail

# Listing topics
/opt/kafka/bin/kafka-topics.sh --list --zookeeper zookeeper:2181

#create a new To-Do 
curl -H "Content-Type: application/json" -X POST -d '{"id":161,"caption":"Test caption 3","userEmail":"marcia@gmail.com","description":"description 3","createdat":null,"priority":2,"status":"PENDING","version":0,"valid":true}' http://localhost:8015/todos

• Deploy the project to Amazon ECS
• Integrate turbine in the Admin dashboard
• Add private maven repository Artifactory
• Manager services integration through Spring Webflow