Spring Application Services

Exercise: Booking Application

1. Create a Postgres database booking
2. Implement a transactional travel service that allows customers to make travel bookings consisting of a flight and a hotel booking
   • Flights and hotels are booked separately by the booking service
   • If one booking fails, the whole travel booking is canceled
   • The booking attempt and possible failures are logged using the logging service e.g.
     Booking travel to London for Bob and Error: Hotels in London booked out
3. Run the TravelIT integration test to test the service
4. Set the following logging levels to observe the transaction management to DEBUG

logging.level.org.springframework.transaction.interceptor.TransactionInterceptor
logging.level.org.springframework.orm.jpa.JpaTransactionManager

5. Implement an asynchronous travel service that allows customers to book travels by sending a message (e.g. London:Bob) to a booking queue
6. Run the AsyncTravelIT integration test to test the service
7. Observe the different behavior depending on whether the listener method is transactional or not

Template
Solution