REST2RFC Proxy

Let your RFC function modules meet the web!

Built with Eclipse using SAP Cloud SDK for Java and to be deployed on SAP BTP

A JCo-based REST to RFC server using BTP destinations. It is a Java based SAP project that allows you to use RFC function modules in web services by invoking a function module in an ABAP system via RFC through BTP RFC destination service.

Check out the 2 blogs that describe the use case and functions in detail:

• SAP Build Apps and BAPIs: RFC meets Web
• REST to RFC proxy – Development on BTP (Part II)

Features

• Exposes SAP function modules as RESTful API endpoints.
• Handles HTTP GET and POST requests.
• Handles SAP role-based authorization for Display and Modify roles.
• Supports input and output parameters for function modules.
• Supports transactional execution of function modules.
• Handles exceptions and provides informative error messages.

Installation

1. Clone the repository to your local machine.
2. Open the project in your favorite Java IDE.
3. Import the required dependencies (See pom.xml for the complete list).
4. Adjust the btpDestination variable to point to your SAP system.

Usage

• HTTP GET: Used for retrieving data from a function module.
  • Example: /rfc?fm=FUNCTION_MODULE_NAME&query=QUERY_PARAMETERS
• HTTP POST: Used for sending data to a function module.
  • Example: /rfc?fm=FUNCTION_MODULE_NAME
  • Body: JSON data

Exception Handling

Exceptions are returned as a JSON response with the exception and errormessage fields. For example:

{
  "exception": "JCo exception occurred while executing FM in destination DEST.",
  "errormessage": "Detailed error message"
}

License

This project is licensed under the MIT License - see the LICENSE file for details.