Authz NodeJS SDK

This is the Authz development kit for NodeJS.

Installation

You can install the SDK in your project by adding the following dependency:

$ npm install @eko/authz-sdk

Usage

You have to instanciate a new Authz Client in your code by doing:

import { Client } from '@eko/authz-sdk';

const client = new Client('localhost:8081', '<client_id>', '<client_secret>');

Once the client is instanciate, you have access to all the gRPC methods.

In order to create a new Principal, you can use

const response = await client.stub.principalCreate({
    id: 'user-123',
    attributes: [
        {key: 'email', value: 'johndoe@acme.tld'},
    ],
});

console.log('Principal created', response.principal?.id);

To declare a new resource:

const response = await client.stub.resourceCreate({
    id: 'post.123',
    kind: 'post',
    value: '123',
    attributes: [
        {key: 'owner_email', value: 'johndoe@acme.tld'},
    ],
});

console.log('Resource created', response.resource?.id);

You can also declare a new policy this way:

const response = client.stub.policyCreate({
    id: 'post-owners',
    resources: ['post.*'],
    actions: ['edit', 'delete'],
    attributeRules: [
        'principal.email == resource.owner_email',
    ],
});

console.log('Policy created', response.policy?.id);

Then, you can perform a check with:

const isAllowed = await client.isAllowed({
    principal: 'user-123',
    resourceKind: 'post',
    resourceValue: '123',
    action: 'edit',
});

Please note that you have access to all the gRPC methods declared here in the proto file.

Configuration

This SDK connects over gRPC to the backend service. Here are the available configuration options:

Property	Description
Address	Authz backend to connect to
ClientID	Your service account client id used to authenticate
ClientSecret	Your service account client secret key used to authenticate