Projeto ecommerce com diversos micro serviços de responsabilidades diferentes simulando o fluxo de compra de um sistema de comercio eletronico

Os microservices são dividios em modulos sendo um deles o modulo common que possui as implementações genericas de kafa para produzir e consumir mensagerias

Microserviços

1 - Common kafka

modulo generico do sistema responsavel por produzir e consumir mensagerias com kafka

2 - Aplication manager

http service responsavel por iniciar os processo de mensageria. Default Port: 8090

3 - Service order

Modulo responsavel por iniciar um fluxo de ordem de compra Default Port: 8091

4 - service user

Modulo responsavel por armazenar os usuarios do sistema em uma base de dados, atualmente usando mock dos dados Default Port: 8095

5 - Service fraud detector

Modulo responsavel por validar as informações de uma ordem e verificar se a compra pode ser realizada pelo usuario Default Port: 8094

6 - Service email

Modulo responsavel por enviar um email sobre o processo da ordem de compra Default Port: 8093

7 - Service logger

Modulo responsavel por centralizar os logs de todos os microserviçoes Default Port: 8092

System Technologies

• Java: Java 12
• Spring Boot: Spring Boot makes it easy to create stand-alone, production-grade Spring based Applications that you can "just run"
• Spring Cloud: Spring Cloud provides tools for developers to quickly build some of the common patterns in distributed systems
  • Feign: for external server communications
• Kafka: Apache Kafka is an open-source distributed event streaming platform used by thousands of companies for high-performance data pipelines, streaming analytics, data integration, and mission-critical applications.
• Zookeeper: centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services
• Kafdrop: Kafdrop is a web UI for viewing Kafka topics and browsing consumer groups. The tool displays information such as brokers, topics, partitions, consumers, and lets you view messages.
• Lombok: Annotations helper library
• H2: A very fast database embedded for tests
• Swagger: Swagger open source and pro tools have helped millions of API developers, teams, and organizations deliver great APIs.
• Docker: The most famous container engine used to execute the B3Invest project with their external dependencies

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Architecture Design

// TODO

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Steps to run

1. Run Kafka server 2. The docker compose contains the kafka and Zookeeper server. docker-compose up -d
2. Run service-order
3. Run service-user
4. Run service logger
5. Run service-email
6. Run service-fraud-detector
7. Run service-reporting

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Docker Compose

Kafka e Zookeeper

docker-compose up -d
docker logs -f <container-id>
docker run -p <external-port>:<internal-port> --name <container-name> --network <network-name> <image-name:tag>
docker-compose down

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Postman Collection

Postman collection para realizar testes
Postman collection

Kafdrop

Dashboard for viewing Kafka topics and browsing consumer groups.
http://localhost:9000

Swagger

The generated swagger html page is available in the following address
http://localhost:8080/swagger-ui/index.html

Links de referencia

1. https://itnext.io/how-to-install-kafka-using-docker-a2b7c746cbdc
2. https://medium.com/better-programming/a-simple-apache-kafka-cluster-with-docker-kafdrop-and-python-cf45ab99e2b9