code: public function initFromAction($action)
      {
          if (!$action) {
              return;
          }
  
          /** @var Mage_Core_Controller_Request_Http $request */
          $request = $action->getRequest();
  
          $this->httpMethod = $request->getMethod();
          $this->requestOriginalPath = $request->getOriginalPathInfo();
          $this->requestPath = $request->getPathInfo();
          $this->remoteIp = Mage::helper('core/http')->getRemoteAddr();
  
          $this->routeName = $request->getRouteName();
          $this->module = $request->getControllerModule();
          $this->class = get_class($action);
          $this->action = $action->getActionMethodName($request->getActionName());
  
      }
docs: Captures request, response and controller information.
  
  Sheep_Debug_Model_Controller constructor.
  @param Mage_Core_Controller_Varien_Action $action