Transaction Service

Transaction service can hold transactions and provide last minute aggregate transaction details

Assumptions

Transactions with future timestamp will be considered invalid
Any transaction with same timestamp and same amount is considered duplicate transaction

Project details

This is a stand alone project built on spring boot, It uses maven for dependency resolution and building as well as starting the project.

Commands

mvn clean install can be used to clean and build the project mvn test to run test cases mvn spring-boot:run can be used to build and start the project with embedded tomcat mvn package can be used to generate a compiled jar file which can be run with below command java -jar TransactionService-0.0.1-SNAPSHOT.jar

info

after starting the project, it can be reached by http://localhost:8099
Default port 8099 can be modified in application.properties file

APIs

Adding transactions

POST http://localhost:8099/transactions

{
	"amount": 36.9,
	"timestamp": 1540994079431
}

curl command

curl -X POST -H 'Content-Type: application/json' -i http://localhost:8099/transactions --data '{ "amount": 36.9, "timestamp": 1540994079431 }'

fetching aggregate statistics

GET http://localhost:8099/statistics

curl command

curl -X GET -i http://localhost:8099/statistics