Happy or not

A Spring Boot example application showing the use of Spring Cloud Stream & the Kafka bindings.

Purpose

The ultimate feedback solution! This application lets the customers leave negative or positive feedback for the owner of the service who can then query the feedbacks left.

API documentation

POST /positive

Leaves a positive feedback.

POST /negative

Leaves a negative feedback.

GET /ratings

Retrieves the feedbacks left by customers. Example response:

{
  "positive": 231415,
  "negative": 2
}

CI/CD

A simple CI/CD pipeline is set up for this project. Whenever a commit is made to the master branch, the service gets automatically built and then promoted onto GKE by CircleCI.

Local build

• Clone the repository
• Run the tests: ./mvnw clean verify
• Run the application: ./mvnw spring-boot:run -Dspring.profiles.active={{profile}}

Available profiles:

• local: Uses an in-process channel to transfer messages from the producer to the consumer, does not have any external dependencies
• kafka: Uses Spring Cloud Stream & Kafka to transfer messages from the producer to the consumer. This profiles requires a Kafka broker running.