This repository is a simple example of using the Spring Batch framework to read data, process that data, and then record the results. Specifically, this code will connect to the payment processing service Stripe to retrieve a list of customers; examine the credit card information stored for that customer and determine if the card is about to expire; send an email to the customer if the card is about to expire; and finally, log to the console the number of customers that were notified in each chunk.
- The code uses the Stripe Java libraries to get customer information, and also uses the Stripe Customer and ExternalAccount Java classes
- Constructor injection was used to inject the StripeRepository and EmailService objects into the processor
- Some simple unit tests were written to verify the basic functionality of the processor, utilizing Groovy language features like mocking and closures to stub out calls to external services