Service requires docker engine installed and java 17.

1. Run docker-compose.yml
2. Start application
3. Open http://localhost:8080/swagger-ui/ for Rest API user web interface

src/main/java/com/example/homework/service/TransactionProvider.java responsible for new generation new transactions, and expose them at \new endpoint via src/main/java/com/example/homework/controller/TransactionProviderController.java

src/main/java/com/example/homework/service/TransactionService.java scheduled job every 5 seconds makes call to \new endpoint using Feign proxy and stores them in database using SpringData repository

Having Spring Data Rest and Spring HATEOAS modules in classpath makes src/main/java/com/example/homework/repository/TransactionRepository.java pageable and sortable RestFULL API endpoint out of the box, providing GET, POST, PUT, PATCH, DELETE methods on /transactionEntities and /transactionEntities/{id}. Work of that endpoints is proved by src/test/java/com/example/homework/mvc/TransactionControllerTest.java

Service exposes /transactionEntities/search/filterByendpoint that works as filter by any transaction property, including transaction data key or value. Work of filtering is proved by src/test/java/com/example/homework/mvc/TransactionControllerTest.java

To make application environment independent, it uses docker image of MySQL with settings listed in docker-compose.yml