Two modules:

• money-transfer-app, containing the app components
• money-transfer-integration-test, containing some tests for testing the overall functionality of the application

The app provides two basic REST HTTP endpoints:

• /account, allowing the creation of new account and checking of the account balance and transactions
• /transaction, allowing to make transactions (referenced by an unique UUID) between two accounts identified by a IBAN (for the demo purpose is an UUID)

The app runs with in-memory datastructures and allow concurrent operations for both endpoints.

The project is a maven project so if you execute mvn clean package on the root of the project you should see in the target folders the jars:

• money-transfer-app-1.0-jar-with-dependencies.jar, corresponding to the fat jar of the application, which you can execute with the command java -jar money-transfer-app-1.0-jar-with-dependencies.jar [PORT] (the default port is 4567)
• money-transfer-integration-test-1.0-fat-tests.jar, corresponding to the fat jar of the integration tests, which you can execute with the command java -jar money-transfer-integration-test-1.0-fat-tests.jar [HOST] [PORT] (the default host is localhost and port is 4567)

If you prefer to skip this part the jars themselves are also in the repository (jars dir)

The server supports:

• POST /account, the body should in JSON format following the structure

{
  "balance": 100.0
}

in which 100.0 is the initial value you can specify, the return body is a quoted string with the account IBAN (JSON UUID).

• GET /account?iban=[IBAN], allows to obtain the account details including balance and transaction history
• POST /transaction, allows the creation of a new transaction between two accounts, the body should be json following this structure:

{
  "origin": "ORIGIN_IBAN",
  "destiny": "DESTINY_IBAN",
  "amount": 99.99
}