How to set up and use Laravel Passport for securing microservices communication



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Laravel Passport is a full OAuth2 server implementation for Laravel, which allows you to implement API authentication with Passport easily. Here are the steps to set up and use Laravel Passport to secure microservices communication:

1. Install Laravel Passport:

First, install Laravel Passport using Composer:

bash
composer require laravel/passport

2. Run migrations:

After installation, run the migration command to create the necessary tables in the database:

bash
php artisan migrate

3. Install Passport:

Next, install Passport using the passport:install Artisan command:

bash
php artisan passport:install

This command will create the encryption keys needed to generate secure access tokens.

4. Configure Passport:

In your AuthServiceProvider, make sure to call the Passport::routes method in the boot method:

php
use Laravel\Passport\Passport;

public function boot()
{
    $this->registerPolicies();

    Passport::routes();
}

This will register the routes necessary for issuing access tokens, refreshing tokens, and revoking tokens.

5. Set up your User model:

Make sure your User model implements the HasApiTokens trait:

php
use Laravel\Passport\HasApiTokens;

class User extends Authenticatable
{
    use HasApiTokens, Notifiable;
    // ...
}

6. Create API routes:

Set up the routes for your API in the routes/api.php file. For example:

php
Route::middleware('auth:api')->get('/user', function (Request $request) {
    return $request->user();
});

7. Generate Passport keys:

Generate the Passport keys using the passport:keys Artisan command:

bash
php artisan passport:keys

8. Configure Passport:

In your config/auth.php file, set the driver for the api guard to passport:

php
'guards' => [
    'web' => [
        'driver' => 'session',
        'provider' => 'users',
    ],

    'api' => [
        'driver' => 'passport',
        'provider' => 'users',
    ],
],

9. Add middleware to your routes:

Apply the auth:api middleware to routes you want to secure:

php
Route::middleware('auth:api')->group(function () {
    // Your secure routes here
});

10. Use Passport in microservices:

Now, you can use Passport to secure communication between your microservices. Each microservice can obtain an access token from the Passport-protected authentication service to make requests to other services.

Here are some additional useful links for further reference:

Make sure to refer to the official documentation for any updates or changes to the Laravel Passport implementation.

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