Confluent // Colorstack Backend Development Demo

Set Up Your Environment

Install Maven for your specific operating system using this link. Use your terminal to navigate to the location on your local machine where you want to download this code, and then clone it from Github.

$ cd /path/to/your/directory/
$ git clone https://github.com/marcusgreer/colorstack-backend-demo.git
$ cd colorstack-backend-demo

How To Run

Echo Server Demo

$ mvn clean package
$ java -jar echo-server-demo/target/echo-server-demo-1.0-SNAPSHOT.jar

Keep this terminal window open, and then run the following command in a separate window using netcat

$ nc localhost 9093

Type text into the same terminal where netcat is running, and see it echoed back to you

Kill the Client and Server processes by running Ctrl+C in the terminal windows.

REST API Demo

Start the server by running:

$ mvn clean package
$ java -jar rest-api-demo/target/rest-api-demo-0.0.1-SNAPSHOT.jar

Note you should see an output similar to the following in your terminal to confirm that the Server is up and running.

2021-03-08 15:06:56.087  INFO 91332 --- [           main] c.c.ColorstackBackendDemoApplication     : Started ColorstackBackendDemoApplication in 1.83 seconds (JVM running for 2.321)

Make requests to the server via cURL

curl --header "Content-Type: application/json" \
  --request POST \
  --data '{"content":"Do Homework","done":"false"}' \
  http://localhost:3000/tasks

Assignment

Modify the code in /rest-api-demo/src/main/java/io/demo/restapi/ to create your own API.

One example would be to create your own version of twitter that can

• Handle multiple users.
• The ability to subscribe/unsubscribe and
• Get the last N articles that a user is following.

Alternatively, be creative and gain inspiration from the various applications your use every day.

Guides

The following guides illustrate how to use some features concretely:

• Building a RESTful Web Service
• Serving Web Content with Spring MVC
• Building REST services with Spring