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microservicos-java-spring's Introduction

Projeto de microserviços com Java, Spring, Rabbitmq, Eureka, Gateway, OpenFeign, Docker, MySQL e Flyway.

Para executar o projeto

  1. Rode um banco de dados mysql em um container Docker:
docker run -d -p 3320:3320 --name mysql-container -e MYSQL_ROOT_PASSWORD=root mysql:8.1.0
  1. Suba o RabbitMQ em um container Docker:
cd rabbit && docker compose up -d
  1. Inicialize os módulos deste projeto. Basta dar run em cada um deles nesta ordem:
  • eureka-server-run;
  • gateway-run;
  • pedidos-run;
  • avaliacao-run;
  • pagamentos-run;
  1. Teste as APIs conforme modelos disponibilizados no diretório .postman para uso e testes no Postman.

  2. Avalie também as filas do RabbitMQ no Admin em localhost:15672 e nos logs das aplicações pedidos e avaliações que possuem listener em eventos de pagamentos.

Passos para criação de um cluster com três nós do RabbitMQ:

  1. Criar containers do rabbitmq:
docker network create alura
docker run -d --rm --net alura --hostname rabbit1 --name rabbit1 -p 8085:15672 -e RABBITMQ_ERLANG_COOKIE=alura_secret rabbitmq:3.10-management
docker run -d --rm --net alura --hostname rabbit2 --name rabbit2 -p 8086:15673 -e RABBITMQ_ERLANG_COOKIE=alura_secret rabbitmq:3.10-management
docker run -d --rm --net alura --hostname rabbit3 --name rabbit3 -p 8087:15674 -e RABBITMQ_ERLANG_COOKIE=alura_secret rabbitmq:3.10-management
  1. Criar um cluster com três nós, unindo os containers 'rabbit2' e 'rabbit3' do RabbitMQ ao container 'rabbit1':
docker exec -it rabbit2 rabbitmqctl stop_app
docker exec -it rabbit2 rabbitmqctl reset
docker exec -it rabbit2 rabbitmqctl join_cluster rabbit@rabbit1
docker exec -it rabbit2 rabbitmqctl start_app

docker exec -it rabbit3 rabbitmqctl stop_app
docker exec -it rabbit3 rabbitmqctl reset
docker exec -it rabbit3 rabbitmqctl join_cluster rabbit@rabbit1
docker exec -it rabbit3 rabbitmqctl start_app
  1. Para que os nós assumam mensagens de que ficarem indisponíveis:

Abrir o RabbitMQ Admin no browser no localhost:15672 (endereço do 'rabbit1').

RabbitMQ Admin -> Policies -> Add / Update a policy:

Name: ha Pattern: .* Apply to: Exchanges and Queues Definition: ha-mode = All

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