Codygen ABAP use case

What is Codygen?

Codygen - is a Cody CLI wrapper delivering following features:

• construct the prompt from other files
• provide the context files
• call chat command
• parse chat response and fetch file content from the response and store it to the drive

Prerequisites

• Install Cody CLI, or preferably open in a devcontainer ( it's just enough to open in a Codespace )
• Login to Cody CLI with your sourcegraph account

Use cases

Petstore openAPI spec generation ( only descriptor )

Here is how we generate this spec

• create codygen-petstore.config.ts

import { config, from } from 'codygen';
import { glob } from 'node:fs/promises';

export default config({
    prompt: from('prompts').read(['petstore.md', 'abap.md']),
    context: Array.fromAsync(
        glob([
            'specs/openapi/openapi_3_0.yaml',
            'specs/petstore/petstore3.json',
            'src/openapi/zif_openapi_3_0.intf.abap',
            'samples/zcl_petstore_v3.clas.abap'
        ])
    ),
    output: 'src/petstore',
});

• here are prompts, which we merge in a config We split them to break apart generic requirements such as abap and sepcifc product requirements. By doing this we can share promp parts in different scenarios
  • prompts/petstore.md
  • prompts/abap.md
• here are context files we use
  • specs/openapi/openapi_3_0.yaml - OpenApi spec in a yaml format
  • specs/petstore/petstore3.json - Petstore spec implementing the petstore API
  • src/openapi/zif_openapi_3_0.intf.abap - previously generated Openapi interface to make AI aware of the interface which describes openapi spec type
  • samples/zcl_petstore_v3.clas.abap - sample implementation. Sample is important beacuse AI follows a pattern from a sample

• Run a command like npx codygen --config codygen-petstore.config.ts