#Kafka Producer example

A simple kafka producer messages with API REST interface to send messages from a client to Kafka Topics

##Technology used

• Developed with Java 17
• Spring Boot 2.7.3
• Hexagonal Architecture
• Testing with junit (Júpiter) and Mockito.
• Jacoco for testing coverage
• Kafka Clients 3.2.1
• Factory Pattern, Builder Pattern, Singleton Pattern...
• MapStruct
• Lombok
• Documentation and API controller and model definitions autogenerated by OpenAPI 3.0.3 and Swagger UI

##Swagger UI

Once the application starts you can see the API documentation in:

http://localhost:8081/swagger-ui/index.html

##Kafka Server

You can configure a simple Kafka Server - Zookeeper with Docker:

docker pull johnnypark/kafka-zookeeper

To execute:

docker run -p 2181:2181 -p 9092:9092 -e ADVERTISED_HOST=127.0.0.1 -e NUM_PARTITIONS=3 johnnypark/kafka-zookeeper

###TO DO:

• Security
• MockMvc tests
• Include a MongoDB to save requests
• Include Webflux
• Add metrics