React Keycloak

> React bindings for Keycloak

Install

React Keycloak requires:

• React 16.0 or later
• a version of keycloak-js matching the main version (e.g. "react-keycloak": "8.0.1" => "keycloak-js": "8.0.1-yymmdd")

yarn add react-keycloak

or

npm install --save react-keycloak

Getting Started

Setup KeycloakProvider

Wrap your App inside KeycloakProvider and pass a keycloak instance as prop

import Keycloak from 'keycloak-js';
import { KeycloakProvider } from 'react-keycloak';

// Setup Keycloak instance as needed
const keycloak = new Keycloak();

// Wrap everything inside KeycloakProvider
const App = () => {
  return ...;
};

N.B. If your using other providers (such as react-redux) it is recommended to place them inside KeycloakProvider.

KeycloakProvider automatically invokes keycloak.init() method when needed and supports the following props:

• initConfig, contains the object to be passed to keycloak.init() method, by default the following is used

  {
    onLoad: 'check-sso',
    promiseType: 'native',
  }
  

  for more options see Keycloak docs.

• LoadingComponent, a component to be displayed while keycloak is being initialized, if not provided child components will be rendered immediately. Defaults to null

• isLoadingCheck, an optional loading check function to customize LoadingComponent display condition. Return true to display LoadingComponent, false to hide it.

  Can be implemented as follow

    keycloak => !keycloak.authenticated;
  

• onEvent, an handler function that receives events launched by keycloak, defaults to null.

  It can be implemented as follow

    (event, error) => {
      console.log('onKeycloakEvent', event, error);
    }
  

  Published events are:

  • onReady
  • onAuthSuccess
  • onAuthError
  • onAuthRefreshSuccess
  • onAuthRefreshError
  • onTokenExpired
  • onAuthLogout

• onTokens, an handler function that receives keycloak tokens as an object every time they change, defaults to null.

  Keycloak tokens are returned as follow

  {
    "idToken": string,
    "refreshToken": string,
    "token": string,
  }
  

HOC Usage

When a component requires access to Keycloak, wrap it inside the withKeycloak HOC.

import { withKeycloak } from 'react-keycloak';

const LoginPage = ({ keycloak, keycloakInitialized }) => {
  // Here you can access all of keycloak methods and variables.
  // See https://www.keycloak.org/docs/latest/securing_apps/index.html#javascript-adapter-reference
  return (
    <div>
      <button type="button"> keycloak.login()}&gt;
        Login
      </button>
    </div>
  );
};

export default withKeycloak(LoginPage);

Hook Usage (React >=16.8 required)

Alternately, when a component requires access to Keycloak, you can also use the useKeycloak Hook.

import { useKeycloak } from 'react-keycloak';

export default () => {
  // Using array destructuring
  const [keycloak, initialized] = useKeycloak();
  // or Object destructuring
  const { keycloak, initialized } = useKeycloak();

  // Here you can access all of keycloak methods and variables.
  // See https://www.keycloak.org/docs/latest/securing_apps/index.html#javascript-adapter-reference

  return (
    <div>
      <div>{`User is ${!keycloak.authenticated ? 'NOT ' : ''}authenticated`}</div>

      {!!keycloak.authenticated &amp;&amp; (
        <button type="button"> keycloak.logout()}&gt;
          Logout
        </button>
      )}
    </div>
  );
};

Demo

See inside src/demo for a demo implementing this library main features.

To run the demo app:

• Clone/Download this repo
• Install dependencies (npm install or yarn)
• Place a valid keycloak.json file inside public folder or setup Keycloak instance inside src/demo/App.js following Keycloak guide
• Run the demo (npm start or yarn start)

Note: The demo app is not meant to be production-ready nor a starter-kit but just a way to show this module components and their usage.

Credits

Library bootstrapped using DimiMikadze/create-react-library and inspired by react-redux

Made with ✨ & ❤️ by Mattia Panzeri and contributors

If you found this project to be helpful, please consider buying me a coffee.