A simple application to calculate a repayment plan for an annuity loan.

It was implemented using a serverless architecture for AWS Lambda and CircleCI for continuous integration.

1. Install Maven.

On Linux:

$ sudo apt-get install mvn

Or with Homebrew:

$ brew install maven

2. Go to the project directory and build the project.

$ mvn package

3. Create a Lambda function on AWS, upload the .jar file and set the handler as victor.santiago.lendico.GeneratePlan.

That's all you need. This function doesn't need any special permissions, so you should be good to go.

If you want, you can use API Gateway to have an API so that everybody can invoke your function without any AWS Lib.

If you can't deploy it, but would like to test it, you can use the following endpoint:

https://s65067mvs5.execute-api.eu-central-1.amazonaws.com/prod/GeneratePlan

Just make a POST request to that endpoint passing the following JSON on the body:

{
  "loanAmount": 5000,
  "nominalRate": 5.0,
  "duration": 24,
  "startDate": "2018-01-01T00:00:01Z"
}

This application doesn't use any libraries to run execute the core logic, but it does use:

• AWS Lambda SDK which is needed to create a Lambda function;

• Lombok so we don't have to deal with nasty Getters/Setters;

• JUnit for Unit testing;