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/*
* Workers are fired up
* Data is sent
* TERMINATE is sent through the control socket
*/


/**
 *  ##################################################################################
 *       PRODUCER - dispatches the work load
 *  ##################################################################################
 */
    protected function getControlSocket()
    {
        if (!$this->controlSocket instanceof \ZMQSocket)
        {
            $this->controlSocket = $this->zmqContext->getSocket(ZMQ::SOCKET_PUB);
            // Bind to the control port - the host will be the same as the producer host
            $this->controlSocket->bind('tcp://172.0.0.1:51001);
        }
        return $this->controlSocket;
    }


    public function killWorkers()
    {
        if ($this->workerState == self::WORKER_STATE_STARTED)
        {
            echo 'Sending KILL to workers' . PHP_EOL;
            $this->getControlSocket()->send(self::WORKER_CONTROL_TERMINATE);

            $this->workerState = self::WORKER_STATE_KILLED;
        }
    }

/**
 *  ##################################################################################
 *      WORKER
 *  ##################################################################################
 */

    public function startWorker($zProgramId, $aProducer_host, $bProducer_port, $cControl_port)
    {
        set_time_limit(0);

        $this->initialiseProgramSettings($zProgramId);
                // Connect to the control + producer socket (Unique per program)
                $control = $this->getZmqContext()->getSocket(ZMQ::SOCKET_SUB);
                $control->setSockOpt(ZMQ::SOCKOPT_SUBSCRIBE, '');
                $control->connect('tcp://172.0.0.1:51001');

                $producer = $this->getZmqContext()->getSocket(ZMQ::SOCKET_PULL);
                $producer->connect('tcp://' . $aProducer_host . ':' . $bProducer_port);

                $producerPoll = new ZMQPoll();
                $producerPoll->add($producer, ZMQ::POLL_IN);
                $read = $write = array();

                while(true)
                {
                    try {
                        $producerEvents = $producerPoll->poll($read, $write, 5000);
                    } catch (\ZMQPollException $e)
                    {
                        echo $e->getMessage();
                    }

                    // Start scanning for events on the poll
                    if($producerEvents)
                    {
                        $this->processRecords(json_decode($producer->recv(), true));
                    } else
                    {
                        echo 'Checking control socket for messages' . PHP_EOL;
                    if ($ctlMessage = $control->recv(ZMQ::MODE_NOBLOCK))
                    {
                        echo 'Control message received' . PHP_EOL;
                        switch ($ctlMessage)
                        {
                            case System_ProgramDataWorker::WORKER_CONTROL_TERMINATE:
                                echo "Received a termination command on the control socket, closing worker: " . getmypid() . PHP_EOL;
                                exit();
                                break;
                        }
                    } else
                    {
                        echo 'Nothing received' . PHP_EOL;
                    }
                    }


                }
    }