kaywalker / VfsmBundle

VfsmBundle

Installation

Composer

Add the following dependencies to your projects composer.json file:

     "repositories": [
         {
             "type": "git",
             "url": "https://github.com/kaywalker/VfsmBundle.git"
         }
     ],
     "require": {
         "hn/vfsm-bundle": "dev-master"
     }

Usage

Useless Machine

The "Useless Machine" is a machine that does no other task, but switching itself off. It has two states: "on" and "off". the initial state is the "off" state. when the switch is set to the on position the machine change from "off" to "on". On entering the "on" state, a timer of 1s is being started. When the timers timeout is reached, the switch is put back to the off position and the machine is set from "on" to "off" state

class UselessMachine
{

    const STATE_OFF = 'off';
    const STATE_ON = 'on';

    const INPUT_SWITCH_IS_OFF = 'switch_is_off';
    const INPUT_SWITCH_IS_ON = 'switch_is_on';
    const INPUT_TIMEOUT = 'timeout';

    const ACTION_START_TIMER = 'start_timer';
    const ACTION_SWITCH_OFF = 'switch_off';

     public function __construct()
     {
         $specification = array(
             'specification' => array(
                 self::STATE_OFF => array(
                     'transitions' => array(
                         array(
                             'to_state' => self::STATE_ON,
                             'condition' => array(array(self::INPUT_SWITCH_IS_ON)),
                         )
                     )
                 ),
                 self::STATE_ON => array(
                     'enter_action' => self::ACTION_START_TIMER,
                     'input_actions' => array(
                         'action' => self::ACTION_SWITCH_OFF,
                         'condition' => array(array(self::INPUT_TIMEOUT))
                     ),
                     'transitions' => array(
                         array(
                             'to_state' => self::STATE_OFF,
                             'condition' => array(
                                 array(self::INPUT_SWITCH_IS_OFF)
                             ),
                         )
                     )
                 )
             )
         );

         $this->executer = new SpecificationExecutor($specification, self::STATE_OFF);
     }
 }