OpenAPI API Client Generation and Compilation

Generate an API client from an OpenAPI schema in YAML format and create a rtk-query api client. This package streamlines this process and ensures a smooth workflow.

Dependencies

1. Node.js and npm: Ensure you have Node.js and npm installed on your system. You can download them from nodejs.org.

Installation

  npm install @layer5/rtk-query-codegen

Usage

Run the script using the following command:

rtk-query-codegen -i /path/to/schema.yml -o /path/to/generated-api.js -c /path/to/codegen-config.json

Config File Options

Simple usage

 {
  apiFile: string
  schemaFile: string
  apiImport?: string
  exportName?: string
  argSuffix?: string
  responseSuffix?: string
  hooks?:
    | boolean
    | { queries: boolean; lazyQueries: boolean; mutations: boolean }
  tag?: boolean
  outputFile: string
  filterEndpoints?:
    | string
    | RegExp
    | EndpointMatcherFunction
    | Array<string | RegExp | EndpointMatcherFunction>
  endpointOverrides?: EndpointOverrides[]
  flattenArg?: boolean
}

Filtering endpoints

If you only want to include a few endpoints, you can use the filterEndpoints config option to filter your endpoints.

 {
  // ...
  // should only have endpoints loginUser, placeOrder, getOrderById, deleteOrder
  filterEndpoints: ['loginUser', /Order/],
}

Endpoint overrides

If an endpoint is generated as a mutation instead of a query or the other way round, you can override that.

{
  // ...
  "endpointOverrides": [
    {
      "pattern": "loginUser",
      "type": "mutation"
    }
  ]
}

Generating hooks

Setting hooks: true will generate useQuery and useMutation hook exports. If you also want useLazyQuery hooks generated or more granular control, you can also pass an object in the shape of: { queries: boolean; lazyQueries: boolean; mutations: boolean }.

Multiple output files

  schemaFile: 'https://petstore3.swagger.io/api/v3/openapi.json',
  apiFile: './src/store/emptyApi.ts',
  outputFiles: {
    './src/store/user.ts': {
      filterEndpoints: [/user/i],
    },
    './src/store/order.ts': {
      filterEndpoints: [/order/i],
    },
    './src/store/pet.ts': {
      filterEndpoints: [/pet/i],
    },
  },
}

The Api.js file

The api.js file contains the generated api endpoints , it injects them into the base rtk client . And then exports all the hooks to use them . If we need to override an api endpoint we can injectEnpoints in a separate file .

Troubleshooting

• If any of the steps fail, the script will exit with a non-zero status code, indicating a failure. Review the error messages to diagnose and resolve any issues.

• Ensure that the Bash script is executable by running chmod +x generate-api.sh.

Important Notes

• Make sure the OpenAPI schema (schema.yml) is updated with latest changes and doesnt contain any breaking changes .

• Always validate and test the generated API client to ensure it functions as expected.

 

Join the Layer5 community!

Our projects are community-built and welcome collaboration. 👍 Be sure to see the Layer5 Community Welcome Guide for a tour of resources available to you and jump into our Slack!

Find your MeshMate

MeshMates are experienced Layer5 community members, who will help you learn your way around, discover live projects and expand your community network. Become a Meshtee today!

Find out more on the Layer5 community.

 

✔️ Join any or all of the weekly meetings on community calendar.
✔️ Watch community meeting recordings.
✔️ Access the Community Drive by completing a community Member Form.
✔️ Discuss in the Community Forum.
✔️Explore more in the Community Handbook.

Not sure where to start? Grab an open issue with the help-wanted label.