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gcframe-auth

v0.1.2

Published

Authentication in Google Cloud Function HTTP triggers

Downloads

7

Readme

GCFrame

Help serve HTTP endpoints with Google Cloud Functions.

Auth

The auth function can be used to authenticate the origin of an HTTP request, based on a Authorization header containing a access token for a Google account (or service account). It uses the mechanism described in Authentication in HTTP Cloud Functions which uses a specially designated Cloud Storage bucket as a proxy for managing authentication the autorization of the cloud function trigger.

Installation

npm install -s gcframe-auth

API

auth(bucketName, [, next])

Only allows access to requests with an authorized access token included in their request. Pass an access token via the Authorization header. Authorization: Bearer ${TOKEN}

| Argument | Desription | Default | | ----------- | ---------------------------------------------------------------------------|----------| | bucketName| The name of the GCS bucket against which the auth check will be performed. | required | | next | A gcframe/middleware function, or the cloud function itself. If not provided the function returns a "partially applied" function which will except the next argument. | required |

Examples

const auth = require('gcframe-auth');

// Define google cloud function, main handler.
function helloWorld (req, res) {
  return res.send(`Hello secret world`);
}

// Only allow users if the token in the request has access to the `myProxyBucket`.
var authdFunction = auth('myProxyBucket', helloWorld);

module.exports = {
  helloWorld: authdFunction,
}

Compose router with other gcframe functions

gcframe functions are auto-curried handler-last functions, so they can be composed in a functional style.

const router = require('gcframe-router');
const auth = require('gcframe-auth);

// Define google cloud function, main handler.
function helloWorld (req, res) {
  // Access named parameter `key`.
  return res.send(`Hello ${req.params.name});
}

// Match GET requests with a single named parameter.
const routerMiddleware = router('GET', '/:key');
// Only allow users if the token in the request has access to the `myProxyBucket`.
const authMiddleware = auth('myProxyBucket');

// Compose gcframe functions into a single middleware function.
const handle = compose(authMiddleware, routerMiddleware);

module.exports = {
  helloWorld: handle(helloWorld),
}