Exemplo n.º 1
0
public class IdlePointCron extends HttpServlet {
  /** */
  private static final long serialVersionUID = 1L;

  private static final Logger log = Logger.getLogger(IdlePointCron.class.getName());

  @Override
  @SuppressWarnings(Const.WARNING_UNCHECKED)
  public void doGet(final HttpServletRequest req, final HttpServletResponse resp)
      throws IOException {
    // PrintWriter out;
    // out = resp.getWriter();
    try {
      processGet();
    } catch (NimbitsException e) {
      LogHelper.logException(IdlePointCron.class, e);
    }
  }

  protected static int processGet() throws NimbitsException {
    final List<Entity> points = EntityServiceFactory.getInstance().getIdleEntities();
    log.info("Processing " + points.size() + " potentially idle points");
    for (final Entity p : points) {
      try {
        checkIdle((Point) p);
      } catch (NimbitsException e) {

        LogHelper.logException(IdlePointCron.class, e);
      }
    }
    return points.size();
  }

  protected static boolean checkIdle(final Point p) throws NimbitsException {
    final Calendar c = Calendar.getInstance();
    c.add(Calendar.SECOND, p.getIdleSeconds() * -1);
    boolean retVal = false;
    final List<Entity> result =
        EntityServiceFactory.getInstance()
            .getEntityByKey(
                UserServiceFactory.getServerInstance().getAdmin(), p.getOwner(), EntityType.user);
    if (!result.isEmpty()) {
      final User u = (User) result.get(0);
      final List<Value> v = ValueServiceFactory.getInstance().getCurrentValue(p);
      if (p.getIdleSeconds() > 0
          && !v.isEmpty()
          && v.get(0).getTimestamp().getTime() <= c.getTimeInMillis()
          && !p.getIdleAlarmSent()) {
        p.setIdleAlarmSent(true);
        EntityServiceFactory.getInstance().addUpdateEntity(u, p);
        // PointServiceFactory.getInstance().updatePoint(u, p);
        final Value va = ValueFactory.createValueModel(v.get(0), AlertType.IdleAlert);
        SubscriptionServiceFactory.getInstance().processSubscriptions(u, p, va);
        retVal = true;
      }
    }
    return retVal;
  }
}
/** Created by bsautner User: benjamin Date: 2/18/12 Time: 12:21 PM */
public class CalculationServiceImpl extends RemoteServiceServlet implements CalculationService {
  final Logger log = Logger.getLogger(CalculationServiceImpl.class.getName());

  @Override
  public void processCalculations(final User u, final Entity point, final Value value)
      throws NimbitsException {

    final List<Entity> calculations =
        EntityServiceFactory.getInstance().getEntityByTrigger(u, point, EntityType.calculation);
    for (final Entity entity : calculations) {
      Calculation c = (Calculation) entity;
      try {

        final List<Entity> target =
            EntityServiceFactory.getInstance().getEntityByKey(u, c.getTarget(), EntityType.point);
        if (target.isEmpty()) {
          log.severe("Point target was null " + c.getTarget());
          log.severe(c.getFormula());
          log.severe("trigger: " + c.getTrigger());
          disableCalc(u, c);
        } else {
          log.info("Solving calc" + c.getFormula());
          final Value result = solveEquation(u, c);
          log.info("result" + result);
          ValueServiceFactory.getInstance().recordValue(u, target.get(0), result);
        }
      } catch (NimbitsException e1) {
        LogHelper.logException(this.getClass(), e1);
        disableCalc(u, c);
      }
    }
  }

  private static void disableCalc(User u, Trigger c) throws NimbitsException {
    c.setEnabled(false);
    EntityServiceFactory.getInstance().addUpdateEntity(u, c);
  }

  @Override
  public Value solveEquation(final User user, final Calculation calculation)
      throws NimbitsException {

    final MathEvaluator m = new MathEvaluatorImpl(calculation.getFormula());
    log.info(calculation.getFormula());

    if (!Utils.isEmptyString(calculation.getX()) && calculation.getFormula().contains("x")) {
      //  Point p = PointServiceFactory.getInstance().getPointByKey(calculation.getX());
      final Entity p =
          EntityServiceFactory.getInstance()
              .getEntityByKey(user, calculation.getX(), EntityType.point)
              .get(0);

      if (p != null) {
        log.info("calc has an x car and i found " + p.getName());
        final List<Value> val = ValueServiceFactory.getInstance().getCurrentValue(p);

        final double d = val.isEmpty() ? 0.0 : val.get(0).getDoubleValue();

        m.addVariable("x", d);
      } else {
        log.severe("calc has an x car and x not found");
      }
    }
    if (!Utils.isEmptyString(calculation.getY()) && calculation.getFormula().contains("y")) {
      final Entity p =
          EntityServiceFactory.getInstance()
              .getEntityByKey(user, calculation.getY(), EntityType.point)
              .get(0);

      // Point p = PointServiceFactory.getInstance().getPointByKey(calculation.getY());
      if (p != null) {
        final List<Value> val = ValueServiceFactory.getInstance().getCurrentValue(p);
        final double d = val.isEmpty() ? 0.0 : val.get(0).getDoubleValue();
        m.addVariable("y", d);
      }
    }
    if (!Utils.isEmptyString(calculation.getZ()) && calculation.getFormula().contains("z")) {
      final Entity p =
          EntityServiceFactory.getInstance()
              .getEntityByKey(user, calculation.getZ(), EntityType.point)
              .get(0);

      //  Point p = PointServiceFactory.getInstance().getPointByKey(calculation.getZ());
      if (p != null) {
        final List<Value> val = ValueServiceFactory.getInstance().getCurrentValue(p);
        final double d = val.isEmpty() ? 0.0 : val.get(0).getDoubleValue();
        m.addVariable("z", d);
      }
    }

    final Double retVal = m.getValue();

    if (retVal == null) {

      throw new NimbitsException("Formula returned a null value: " + calculation.getFormula());
    }

    return ValueFactory.createValueModel(retVal, "CV");
  }
}