connected963/account-service

Account service

Objective

Provides an API to manage bank accounts.

Note: For a real environment Guava EventBus must be replaced with some message broker to provide resilience.

Features

• Insert account
• Find all accounts
• Delete account
• Transfer money between accounts

Behavior

When a transfer is requested, the API validates received input and if everything is valid, proceed with the operation.

The operation executes the following steps:

• Subtract informed amount on the payment account
• Start a Payment Movement to keep history of this transaction, with status PROCESSING
• Try
  • Add informed amount on the receiver account
  • Create a Receipt Movement to keep history of this transaction, with status COMPLETED
  • Finalizes the Payment Movement created before, with status COMPLETED
• If something goes wrong
  • Revert informed amount subtraction on the payment account
  • Finalizes the Payment Movement created before, with status ABORTED

Utilization

To compile and generate an executable jar for this application, inside the project directory:

Execute: mvn clean package

To run this application, after generate the executable jar

Execute: java -jar target/account-service.jar

Postman collection

A Postman collection was made available to facilitate the tests experience.

Utilized technologies

• Java 12
• Javalin
• Jdbi
• Flyway
• Guava
• H2

Next steps

• Add transactions to sensitive operations
• Refactor AccountInsertValidator to validate an Account instead of an AccountInsertInputModel
• Create an exception handler to return human-readable messages on errors