To give a bit more detail, I'm building an in-house app kind of like Forge. There's a team who manage a number of contractors who aren't technically minded. The app I'm building steps them through the process of creating client websites, from start to final live deployment.

It encapsulates the creation / management of VCS repositories (http://codebasehq.com), deployments (http://deployhq.com) and AWS hosted CentOS boxes.

The specific example would be, when a "website" entity is created in this app, we need to:

1. Create a VCS repository
2. Clone an existing, boilerplate repository and push it to the new blank VCS repository
3. Create a deployment configuration.

If (1) or (2) fail, obviously (3) won't work because it requires an existing VCS repository...

Hello, I had similiar situation, I expose my solution, it can be useful to someone:

interface StepJob
{

    public function nextStep();

    public function notify(); //optionally
}

abstract class InstallationJob extends Job implements ShouldQueue, StepJob
{
    protected $plan = [ 
                               Job1::class => Job2::class,
                              JobN::class => JobX::class
   ]

    function nextStep()
    {
                  //dispatch next job based on $this->plan dependences or more complex dependences. call notify() when done.
    }
}

Create and Register a EventListener (JobsEventListener.php) for events (JobProcessed,JobFailed,JobProcessing):

    public function success(JobProcessed $event)
    {
        $job = $this->unserializeJob($event);

        Log::debug("Job Processed ".get_class($job));

        if ($job instanceof  StepJob)
        {
            $job->nextStep();
        }
    }

success function are listening "JobProcessed" Event.

Another considerations:

Process has a model related. nextStep() method updates model taking care with concurrency(using transaction and lockForUpdate). Model is created before start the process and pas on the job constructor.

Now, I need to define another similar process , and I'm thinking about to implement something like http://thispointer.com/task-grouping-using-composite-design-pattern/.

But I'm trying not to get too complicated.