PHP code example of zack / saga

1. Go to this page and download the library: Download zack/saga library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php.

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

zack / saga example snippets




use Symfony\Component\EventDispatcher\EventDispatcher;
use Zack\Saga\Processor;
use Zack\Saga\SagaInterface;

class LoginSaga implements SagaInterface
{
    public function run(): \Generator
    {
        // Wait for the 'acme.user.login' event.
        $event = yield take('acme.user.login');
        
        // Get user from given ID.
        $user = UserProvider::find($event->getUserId());
        
        if ($user === null) {
            // Redirect to login page.
            yield dispatch('acme.router.redirect', new RedirectEvent('/login'));
            return;
        }
        
        // Create session.
        yield dispatch('acme.user.session', new UserSessionEvent($user));
        // Redirect to dashboard page.
        yield dispatch('acme.router.redirect', new RedirectEvent('/login'));
        
        // Fork saga for taking user logout event.
        yield fork(new LogoutSaga());
    }
}

$eventDispatcher = new EventDispatcher();

// Create a default Processor.
$processor = Processor::create($eventDispatcher);
$processor->run(new LoginSaga());

$eventDispatcher->dispatch('acme.user.login', new LoginEvent(1));