@dsb-norge/vue-keycloak-js

vue-keycloak plugin

Introduction

This plugin uses the official Keycloak JS adapter (https://github.com/keycloak/keycloak-js-bower)

Please read the documentation: http://www.keycloak.org/docs/latest/securing_apps/index.html#_javascript_adapter

Excerpt from Keycloak JS doc:

By default to authenticate you need to call the login function. However, there are two options available to make the adapter automatically authenticate. You can pass login-required or check-sso to the init function. login-required will authenticate the client if the user is logged-in to Keycloak or display the login page if not. check-sso will only authenticate the client if the user is already logged-in, if the user is not logged-in the browser will be redirected back to the application and remain unauthenticated.

To enable login-required set onLoad to login-required and pass to the init method:

keycloak.init({ onLoad: 'login-required' })

Installation

Install using yarn

yarn add dsb-vue-keycloak

Install using npm

npm install dsb-vue-keycloak --save

Usage

Vue.use(VueKeyCloak, [options])

Tell Vue to install the plugin, and optionally pass in a JavaScript object additional configuration.

import VueKeyCloak from 'dsb-vue-keycloak'

Vue.use(VueKeyCloak)

// You can also pass in options. Check options reference below.
Vue.use(VueKeyCloak, options)

The plugin adds a $keycloak property to the global Vue instance. This is actually a new Vue instance and can be used as such. It holds this data:

{
  ready: Boolean,         // Flag indicating whether Keycloak has initialised and is ready
  authenticated: Boolean,
  userName: String,       // Username from Keycloak. Collected from tokenParsed['preferred_username']
  fullName: String,       // Full name from Keycloak. Collected from tokenParsed['name']
  logoutFn: Function,     // App+Keycloak logout function
  token: String,          // Access token
}

Options

You can pass in an object as options to the plugin. The following keys are valid options. See below for descpription.

Key	Type	Default
config	String | Object	window.__BASEURL__ + '/config'
init	Object	{onLoad: 'login-required'}
onReady	Function(keycloak)

config

String

If this option is a string, the plugin will treat it as an URL and make an HTTP GET request to it.

If not present, the plugin will look for a global variable window.__BASEURL__ and prepend it to '/config' and use this a default place to make a GET request.

If no window.__BASEURL__ exists, /config is used.

The plugin then expects the return value to be an object with the following keys and values:

{
  authRealm: String,
  authUrl: String,
  authClientId: String,
  logoutRedirectUri: String
}

These values will be used as constructor parameters to the official Keycloak adapter.

Object

If this option is an object, the values will be passed as constructor parameters. The keys must have the same naming as above. No HTTP GET request is done in this case.

init

This option is the parameter object for the Keycloak.init method.

onReady

This option is a callback function that is executed once Keycloak has initialised and is ready. You can be sure that the Vue instance has a property called $keycloak in this function. See above for possible values.

The callback function has one parameter, which is the keycloak object returned from the Keycloak adapter on instatiation.

One use case for this callback could be to instatiate and mount the Vue application. Then we are sure that the Keycloak authentication and the $keycloak property are properly finished and hydrated with data:

Vue.use(VueKeyCloak, {
  onReady: (keycloak) => {
    console.log(`I wonder what Keycloak returns: ${keycloak}`)
    /* eslint-disable no-new */
    new Vue({
      el: '#app',
      router,
      template: '<App/>',
      render: h => h(App)
    })
  }
})

In conjuction with the above, you might find it useful to intercept e.g. axios and set the token on each request:

function tokenInterceptor () {
  axios.interceptors.request.use(config => {
    config.headers.Authorization = `Bearer ${Vue.prototype.$keycloak.token}`
    return config
  }, error => {
    return Promise.reject(error)
  })
}

Vue.use(VueKeyCloak, {
  onReady: (keycloak) => {
    tokenInterceptor()
    /* eslint-disable no-new */
    new Vue({
      el: '#app',
      router,
      template: '<App/>',
      render: h => h(App)
    })
  }
})