fabianogoes / kotlin-microservices-springcloud

Example of Microservices with Spring Cloud and Kotlin

Example of Microservices with Spring Cloud and Kotlin

This is an example of Microservices using Spring Cloud and Kotlin

Stack:

• Java 1.8
• Maven 3
• Koltin 1.3.61
• Spring Boot 2
• Spring Cloud Hoxton.RELEASE
• Server Register/Discover Eureka
• Spring Cloud Config Server
• Api Gateway Zuul
• Actuator
• Postman

References

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• Spring Cloud
• Spring Cloud Netflix Eureka
• Spring Cloud Config
• Spring REST with a Zuul Proxy
• Spring Cloud – Bootstrapping
• A Guide to Spring Cloud Netflix – Hystrix

Running all Services Local

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Required Local Installed

• Docker
• docker-compose

./run.sh

Wait for complete boot and verify Eureka UI: http://localhost:8761

Test using Postman

Import Postam Collection kotlin-microservices-springcloud.postman_collection.json

1. HEALTH CHECK GATEWAY
2. HEALTH CHECK CALCULATOR by GATEWAY
3. HEALTH CHECK SIMULATION by GATEWAY
4. GET CALCULATOR by GATEWAY
5. GET SIMULATION by GATEWAY

Change any calculator's propertie in staging branch through of config repository

Execute again in the Postman

1. POST refresh CALCULATOR by GATEWAY
2. GET SIMULATION by GATEWAY

kotlin-microservices-springcloud's Issues

To migrate control of Dependencies and Build from Maven to Gradle in the all services

To implement Distributed Tracing with Spring Cloud Sleuth and Spring Cloud Zipkin

References:

• https://spring.io/blog/2016/02/15/distributed-tracing-with-spring-cloud-sleuth-and-spring-cloud-zipkin

To implement Centralize log with Graylog

To ensure good monitoring of services within a microservices architecture it is necessary to centralize the logs in one place, and for this there are several tool options, in this example I will use Graylog.
As a base I will use this article: https://medium.com/@klebernunes182/graylog-docker-springboot-parte-1-e29c8fca57f0

Dockerize the services

To make it easier to boot into a local environment I want to dockerize services and lift the entire environment using docker-compose.

• Dockerize all services.

• Boot all environment using docker-compose.

To implement Centralized authentication with ZUUL+ Eureka + JWT

References:

• https://medium.com/@arjunac009/spring-boot-microservice-with-centralized-authentication-zuul-eureka-jwt-5719e05fde29