moneytransfer

Money Transfer webservice supporting concurrent calls

Application starts webserver on http://localhost:8080 by default

• Jetty - as a server layer
• Jersey - as a JAX-RS implementation
• JUnit 5 - as a unit test framework
• Rest Assured - for API tests

Application may be started from standalone jar:

java -jar moneytransfer-1.0-SNAPSHOT-jar-with-dependencies.jar

or as a maven goal

mvn exec:java

Account API - /accounts

GET - retrieves all accounts from database

Response: Status: 200 OK

[
    {
        "id": "2b042944-7b78-4468-87a7-573582b24911",
        "balance": 80.1
    },
    {
        "id": "a9e0bcc6-72dd-43ae-8879-62002b0f686d",
        "balance": 15
    },
    {
        "id": "97463a3b-8ad9-4ad5-ae7a-37d3807795f7",
        "balance": 130.1
    },
    {
        "id": "db7c979a-073b-4fb7-9528-9de1807c1727",
        "balance": 100.1
    }
]

---

POST - persists new account Request Body - Account object

Sample request:

{
	"id":"2",
	"balance":"5.0"
}

Sample response: Status: 200 OK

{
	"id":"2",
	"balance":"5.0"
}

Duplicated account response: Status: 400 Bad Request

Account with ID:2 already exists. 
Duplicates are not allowed.

---

/{id} - account id GET - retrieves all accounts from database

Response: Status: 200 OK

{
    "id": "97463a3b-8ad9-4ad5-ae7a-37d3807795f7",
    "balance": 55.3
}

Account doesn't exist: Status: 204 No Content

Transaction API - /transactions

POST - submit new transaction

Request Body - MoneyTransfer object

Sample request:

{
	"source":"1",
	"target":"2",
	"balance":"5.0"
}

Sample response: Status: 200 OK

[
    {
        "id": "1",
        "balance": "45"
    },
    {
        "id": "2",
        "balance": "10"
    }
]

Insufficient balance on source account: Status: 409 Conflict

Money Transfer cant be performed due to lack of funds on the account.

One of the party accounts doesn't exist: Status: 400 Bad Request

Account(s) doesnt exist. | Source: null, Target: Account{id=2, balance=10}