Improvment: Wont spawn extra queues

[alexmontoanelli]

Consider the follow setup:

 'defaults' => [
        'supervisor-1' => [
            'connection' => 'redis',
            'queue' => ['default'],
            'balance' => 'auto',
            'autoScalingStrategy' => 'time',
            'maxProcesses' => 1,
            'maxTime' => 0,
            'maxJobs' => 0,
            'memory' => 128,
            'tries' => 1,
            'timeout' => 60,
            'nice' => 0,
        ],
       'supervisor-2' => [
            'connection' => 'redis',
            'queue' => ['high'],
            'balance' => 'auto',
            'autoScalingStrategy' => 'time',
            'maxProcesses' => 1,
            'maxTime' => 0,
            'maxJobs' => 0,
            'memory' => 128,
            'tries' => 1,
            'timeout' => 60,
            'nice' => 0,
        ],
    ],


'production-1' => [
          'supervisor-1' => [
              'maxProcesses' => 10,
              'balanceMaxShift' => 1,
              'balanceCooldown' => 3,
          ],
      ],

'production-2' => [
          'supervisor-2' => [
              'maxProcesses' => 10,
              'balanceMaxShift' => 1,
              'balanceCooldown' => 3,
          ],
      ],

Currently, in every environment, the MasterSupervisor run all the supervisors queues.

In a multi server deployment, if you spawn horizon on second server with the --environment=production-2, you always get a production-1 supervisors too (default queue in this case) (picture 1).

With this change, we can selectible choice the supervisors that we want to run on each enviroments, just checking for the maxProcess > 0.

Imagine that you want a horizon instance to only process slow queues, or you have a high power vm/cpu/vps that you just want to run specific queue.

I cant figure out how to dead with this cenario, without this change.

Maybe we can put a global config, to 'dont spawn queues not listed in supervisor'...

What do you think about?

    'production-2' => [
            'supervisor-1' => [
                **'maxProcesses' => 0,**
            ],
            'supervisor-2' => [
                'maxProcesses' => 10,
                'balanceMaxShift' => 1,
                'balanceCooldown' => 3,
            ],
        ],