Class: Daemon::Command::StartCommand

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# File 'lib/onapp/engine/command/start_command.rb', line 12

def execute
  say 'Starting OnApp Engine...'

  if active >= allowed
    error "Already running #{active} workers. #{allowed} allowed."
    return false
  end

  pid = Daemon::MasterProcess.another_instance_pid
  if pid
    say "Found onapp engine #{pid}. Asking to spawn #{allowed - active} workers"
    Process.kill('USR1', pid)
    return true
  end

  if options.forked
    say 'Spawning engine...'
    pid, err = Daemon::MasterProcess.new(forked: true).run
    if err || !pid
      error "Can't start engine!"
      error(err)
      if pid
        Process.kill(15, pid) rescue error("#{$!.class}: #{$!.message}")
      end
      return false
    else
      say "Spawned #{pid}"
      return true
    end
  else
    say 'Running master process'
    Daemon::MasterProcess.new(forked: false).run
    return true
  end
end