Pol Axios Auth

Retrieve access tokens for pol oauth. Respect access token and refresh token expiry.

Usage

import { authenticate } from "@ovotech/pol-auth-axios";

const tokens1 = await authenticate({
  authUrl: "http://auth/authentication/v1.0.0/oauth/token",
  clientId: "...",
  clientSecret: "...",
});

// { accessToken: '...', accessTokenExpires: 1553068047 }
console.log(tokens1);

// ... some time passes

const tokens2 = await authenticate({
  authUrl: "http://auth/authentication/v1.0.0/oauth/token",
  clientId: "...",
  clientSecret: "...",
  audience: "DirectCredits",
  previous: auth,
});

After the initial call, doing another authenticate with a previous argument would either - return the same response, if the authToken is still valid or expired, generate a new authToken.

By default it would give you a leeway of 10 seconds for the expiry checks, so auth and refresh tokens are expired 10 seconds earlier. You can configure this with the margin argument

const auth1 = await authenticate({
  authUrl: "http://auth/authentication/v1.0.0/oauth/token",
  clientId: "...",
  clientSecret: "...",
  audience: "DirectCredits",
  // consider tokens expired 15 seconds earlier
  margin: 15,
});

Usage with a class

If you want to encapsulate the state of the tokens inside of a class object, you can use the PolAuth class:

import { PolAuth } from "@ovotech/pol-auth-axios";

const auth = new PolAuth({
  authUrl: "http://auth/authentication/v1.0.0/oauth/token",
  clientId: "...",
  clientSecret: "...",
  audience: "DirectCredits",
});

const tokens1 = await auth.authenticate();

// ... sometime passes

const tokens2 = await auth.authenticate();

Usage with axios

You can use the axios interceptor to add a bearer auth token to the requests automatically.

import axios from "axios";
import { polAuthAxios } from "@ovotech/pol-auth-axios";

const api = axios.create({ baseURL: "http://service.example.com" });
const auth = polAuthAxios({
  authUrl: "http://auth/authentication/v1.0.0/oauth/token",
  clientId: "...",
  clientSecret: "...",
  audience: "DirectCredits",
});

api.interceptors.request.use(auth);

// Would be called with Authorization: Bearer <authToken>
const response = await api.get("/test");

Error handling

If there is an api error, you'll get an PolAuthError

import { authenticate, PolAuthError } from "@ovotech/pol-auth-axios";

try {
  const tokens1 = await authenticate({
    authUrl: "http://auth/authentication/v1.0.0/oauth/token",
    clientId: "...",
    clientSecret: "...",
    audience: "DirectCredits",
  });
} catch (error) {
  if (error instanceof PolAuthError) {
    console.log(error.message, error.code, error.errors);
  }
}

Low level usage

You can also call the login functions directly, to get the raw server responses.

import { login, refresh } from "@ovotech/pol-auth-axios";

const tokens1 = await login({
  authUrl: "http://auth/authentication/v1.0.0/oauth/token",
  clientId: "...",
  clientSecret: "...",
  audience: "DirectCredits",
});

Running the tests

Then you can run the tests with:

yarn test

Coding style (linting, etc) tests

Style is maintained with prettier and tslint

yarn lint

Deployment

Deployment is performed by lerna automatically on merge / push to master, but you'll need to bump the package version numbers yourself. Only updated packages with newer versions will be pushed to the npm registry.

Contributing

Have a bug? File an issue with a simple example that reproduces this so we can take a look & confirm.

Want to make a change? Submit a PR, explain why it's useful, and make sure you've updated the docs (this file) and the tests (see test folder).

License

This project is licensed under Apache 2 - see the LICENSE file for details