Service Composition

Instructions

Calling APIs can be error-prone when using raw text or JSON. In this exercise, you will use Ballerina Records to organize the request payloads and ensure successful communication with external reservation endpoints.

Objectives

• Modify the provided code.
• Reserve an airline ticket for the user by calling the Airline reservation service. Send a post request to airlineReservationService with the appropriate payload and get a response
• Reserve a hotel room for the user by calling the Hotel reservation service. Send a post request to hotelReservationService with the appropriate payload and get a response
• Rent a car for the user by calling the Car rental service. Send a post request to carRentalService with the appropriate payload and check the response
• If everything is successful, return a body with a message attribute of "Congratulations! Your journey is ready!!"

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Source

This is an exercise to introduce users to the Ballerina HTTP client