ePay - Your Digital Wallet

ePay is a user-centric digital wallet service designed for effortless financial management. With ePay, users can create and update their unique IDs, add funds securely, withdraw money, and seamlessly transfer funds to other users. This platform empowers individuals with control over their finances, offering a simple and secure solution for all their digital wallet needs.

Tech Stack

#Spring_boot #Mysql #Elasticsearch #Jenkins #Swagger_UI #Docker 

Key Words

#JWT_Tokens #Transactional_Nature #Elasticsearch #Jenkins #CI/CD
#Unit_Test_Case #JUnit #Swagger_UI #Docker #Docker_Compose #OTP_Verification

Key Points

1. JWT Tokens are employed for authentication purposes.
2. Custom exceptions are created for enhanced error handling.
3. Spring Security is implemented for securing the application.
4. The API transactions are configured to be inherently transactional, ensuring automatic rollback in the event of errors.
5. The application is containerized using a Dockerfile.
6. Docker Compose is used for streamlined deployment.
7. Jenkins is harnessed to construct a CI/CD pipeline.
8. The incorporation of Elasticsearch serves to boost system performance.
9. Comprehensive application documentation is provided through the integration of Swagger-UI.
10. Unit test cases are crafted in JUnit to ensure that the code meets quality standards.
11. Phone number verification is conducted via OTP.

APIs

Swagger-UI -> api/swagger-ui/index.html

User Controller

METHOD	ROUTE	FUNCTIONALITY	ACCESS
POST	/api/user/signup	Register new user	Open
POST	/api/user/verify-phoneno	Verify OTP	Open
POST	/api/user/login	Login using phone no and password	Open
GET	/api/user	Get user details	Need Token
PUT	/api/user	Update user details	Need Token
DELETE	/api/user	Delete user	Need Token

Wallet Controller

METHOD	ROUTE	FUNCTIONALITY	ACCESS
GET	/api/wallet/checkbalance	Check wallet balance	Need Token
POST	/api/wallet/deposit	Deposit money in wallet	Need Token
POST	/api/wallet/withdrawal	Withdraw money from wallet	Need Token
POST	/api/wallet/transfer	Transfer money to another user	Need Token

Wallet Controller

METHOD	ROUTE	FUNCTIONALITY	ACCESS
GET	/api/statement?pageNumber=0	Get Statement of wallet	Need Token

Authorization: Bearer {token}

Requirements

1) Elasticsearch is operational and accessible on port number 9200 (i.e. http://localhost:9200).

2) MySql is operational and accessible on port number 3306 ( Username=root and password= root )

NOTE:

1. You have the flexibility to modify the port number according to your preferences in the application.yaml file.
2. The version of Elasticsearch being used is 7.17.14.

Resources

• use full command

1. docker run -p 9200:9200 -d -m 1GB -e "discovery.type=single-node" docker.elastic.co/elasticsearch/elasticsearch:7.17.14
2. docker run -p 3306:3306 -d -e MYSQL_ROOT_PASSWORD=root mysql