ABAP OpenAPI Client & Server Generator

ABAP OpenAPI is an OpenAPI generator tool designed to create API clients, ICF server handlers, and ICF server implementation stubs from OpenAPI documents.

Generate

It is possible to generate the objects using different processes:

• Generate via our web client
• Generate via command line (NodeJS)
• Generate via ABAP

Features

Feature
OpenAPI File Types	JSON
OpenAPI Versions	v2*, v3
ABAP Versions	v702 and up
Object Creation	one self-contained global class & interface per OpenAPI definition

* OpenAPI v2 is currently only capable by converting the v2 file to a v3 file. This can be done manually using the Swagger Editor, or programmatically using Swagger Converter

NOTE: generated code currently uses ZCL_OAPI_JSON, suggest copying the implementation to a local class in the generated global class

Use Cases

API Creator

• Write the OpenAPI document for your API so that you can generate the ICF handler and Server Implementation boilerplate
• Use the OpenAPI document to create automatic documentation for your API

API User

• Use any OpenAPI document to create the client class to consume external APIs

Building/Developing

Prerequisites

NodeJS 16+

Setup

• clone this repository
• run npm install

Testing

Unit Tests: npm test Intergration Tests: npm run integration_test

You can try out the generation using Swagger's Petstore Example:

• Just run npm run petstore
• The output files will be generated in ./test_v1/generated/

Example

#!/usr/bin/env bash

rm -rf abap-openapi
git clone --depth=1 https://github.com/abap-openapi/abap-openapi
rm -rf abap-openapi/.git
cd abap-openapi
npm ci
npm run transpile
rm ../src/api/*.abap
node test_v2/index.mjs <filename> ../src/api <name>