src/main/java/at/ac/tuwien/sbc/valesriegler/xvsm/DriverXVSM.java

   1 package at.ac.tuwien.sbc.valesriegler.xvsm;
   2
   3
   4 import at.ac.tuwien.sbc.valesriegler.common.Bill;
   5 import at.ac.tuwien.sbc.valesriegler.common.Util;
   6 import at.ac.tuwien.sbc.valesriegler.types.*;
   7 import at.ac.tuwien.sbc.valesriegler.xvsm.spacehelpers.SpaceAction;
   8 import org.mozartspaces.capi3.EntryLockedException;
   9 import org.mozartspaces.core.ContainerReference;
  10 import org.mozartspaces.core.MzsConstants;
  11 import org.mozartspaces.core.MzsCoreException;
  12 import org.mozartspaces.core.TransactionReference;
  13 import org.slf4j.Logger;
  14 import org.slf4j.LoggerFactory;
  15
  16 import java.io.Serializable;
  17 import java.net.URI;
  18 import java.util.Arrays;
  19 import java.util.List;
  20
  21 public class DriverXVSM extends AbstractXVSMConnector {
  22     private static final Logger log = LoggerFactory.getLogger(DriverXVSM.class);
  23
  24     private int driverId;
  25
  26     public DriverXVSM(int id, int port) {
  27         super(port);
  28
  29         this.driverId = id;
  30
  31         preparedDeliveryPizzasContainer = useContainer(Util.DELIVER_DELIVERY_PIZZAS);
  32         deliveryOrderTakenContainer = useContainer(Util.DELIVERY_ORDER_TAKEN);
  33         deliverDeliveryOrderContainer = useContainer(Util.DELIVER_DELIVERY_ORDER);
  34         pizzeriaDeliveryContainer = useContainer(Util.PIZZERIA_DELIVERY);
  35
  36     }
  37
  38
  39     public void listenForPreparedDeliveryOrders() {
  40         getDefaultBuilder("listenForPreparedDeliveryOrders").setCref(deliverDeliveryOrderContainer).setLookaround(true).setSpaceAction(new SpaceAction() {
  41
  42             @Override
  43             public void onEntriesWritten(List<? extends Serializable> entries) throws Exception {
  44                 handleDeliveries(entries);
  45
  46             }
  47         }).createSpaceListenerImpl();
  48     }
  49
  50     private void handleDeliveries(List<? extends Serializable> entries) throws MzsCoreException {
  51         final List<DeliveryGroupData> deliveries = castEntries(entries);
  52
  53         for (DeliveryGroupData delivery : deliveries) {
  54             DeliveryGroupData template = new DeliveryGroupData(delivery.getId());
  55             template.setDeliveryStatus(DeliveryStatus.ORDERED);
  56
  57             final TransactionReference tx = capi.createTransaction(
  58                     7000,
  59                     URI.create(String.format(Util.SERVER_ADDR, port)));
  60             final String error = "Another driver wants to deliver this order!";
  61
  62             try {
  63                 // Get lock for delivering this delivery order
  64                 takeMatchingEntity(template, deliverDeliveryOrderContainer, tx, MzsConstants.RequestTimeout.ZERO, error);
  65                 final DeliveryGroupData group = takeMatchingEntity(template, pizzeriaDeliveryContainer, tx, MzsConstants.RequestTimeout.DEFAULT, "Cannot get the delivery order!");
  66                 group.setDriverId(driverId);
  67                 group.setDeliveryStatus(DeliveryStatus.IN_PROGRESS);
  68
  69                 final List<DeliveryGroupData> groups = Arrays.asList(group);
  70                         sendItemsToContainer(groups,
  71                                 pizzeriaDeliveryContainer, MzsConstants.RequestTimeout.ZERO, null);
  72
  73                 if (!Util.runSimulation) {
  74                     Thread.sleep(3000);
  75                 }
  76
  77                 final String address = String.format(Util.SERVER_ADDR, Util.DELIVERY_CUSTOMERS_PORT);
  78                 ContainerReference cref = null;
  79                 boolean success = false;
  80                 try {
  81                     cref = capi.lookupContainer(group.getAddress(), URI.create(address), MzsConstants.RequestTimeout.ZERO, null);
  82                     log.debug("Looked up container {} successfully!", address);
  83                     success = true;
  84
  85                 } catch (Exception ex) {
  86                     log.info("Could not find container {}", address);
  87                 }
  88                 if (success) {
  89                     group.setDeliveryStatus(DeliveryStatus.DELIVERED);
  90                     if (!Util.runSimulation) {
  91                         double sum = computeSum(group.getOrder());
  92                         sendItemsToContainer(Arrays.asList(new Bill(sum, group.getId())), cref, MzsConstants.RequestTimeout.ZERO, null);
  93                     }
  94                 } else {
  95                     group.setDeliveryStatus(DeliveryStatus.DELIVERY_FAILED);
  96                 }
  97                 sendItemsToContainer(groups, pizzeriaDeliveryContainer, MzsConstants.RequestTimeout.ZERO, tx);
  98                 capi.commitTransaction(tx);
  99
 100
 101             } catch(EntryLockedException e) {
 102                 capi.rollbackTransaction(tx);
 103             } catch (Exception e) {
 104                 log.info("DRiverXVSM exception");
 105                 log.info(e.getMessage());
 106                 e.printStackTrace();
 107             }
 108         }
 109     }
 110
 111     private double computeSum(Order order) {
 112         final List<PizzaOrder> orderedPizzas = order.getOrderedPizzas();
 113         double sum = 0;
 114         for (PizzaOrder pizza : orderedPizzas) {
 115             final PizzaType pizzaType = pizza.getPizzaType();
 116             switch (pizzaType) {
 117                 case CARDINALE: sum = sum + 6;
 118                     break;
 119                 case MARGHERITA: sum = sum + 5;
 120                     break;
 121                 case SALAMI: sum = sum + 5.5;
 122                     break;
 123                 default:
 124                     throw new RuntimeException("Unhandled Pizzatype: " + pizzaType);
 125             }
 126         }
 127         return sum;
 128     }
 129
 130     public void listenForPreparedDeliveryPizzas() {
 131         getDefaultBuilder("listenForPreparedDeliveryPizzas").setCref(preparedDeliveryPizzasContainer).setLookaround(true).setSpaceAction(new SpaceAction() {
 132
 133             @Override
 134             public void onEntriesWritten(List<? extends Serializable> entries)
 135                     throws Exception {
 136
 137                 List<Pizza> pizzas = castEntries(entries);
 138
 139                 for (Pizza pizza : pizzas) {
 140                     int orderId = pizza.getOrderId();
 141                     Order order = new Order();
 142                     order.setId(orderId);
 143
 144                     TransactionReference tx = getDefaultTransaction();
 145
 146                     try {
 147                         DeliveryGroupData entity = new DeliveryGroupData();
 148                         entity.setDeliveryStatus(null);
 149                         entity.setOrder(order);
 150
 151                         final DeliveryGroupData groupData = takeMatchingEntity(entity,
 152                                 deliveryOrderTakenContainer, tx, MzsConstants.RequestTimeout.DEFAULT,
 153                                 "Another driver just checks if the delivery order is complete");
 154                         int numberOfPizzas = groupData.getOrder().getNumberOfPizzas();
 155
 156                         Pizza pizzaTemplate = new Pizza();
 157                         pizzaTemplate.setOrderId(orderId);
 158
 159                         List<Pizza> pizzasOfOrder = takeMatchingEntities(
 160                                 pizzaTemplate, preparedDeliveryPizzasContainer, tx,
 161                                 MzsConstants.RequestTimeout.DEFAULT,
 162                                 "Cannot take the pizzas from the preparedDeliveryPizzasContainer");
 163
 164                         if (pizzasOfOrder.size() == numberOfPizzas) {
 165                             final List<DeliveryGroupData> groupsWithCompleteOrder = Arrays.asList(groupData);
 166                             sendItemsToContainer(groupsWithCompleteOrder,
 167                                     deliverDeliveryOrderContainer, MzsConstants.RequestTimeout.DEFAULT,
 168                                     tx);
 169
 170                             capi.commitTransaction(tx);
 171                         } else {
 172                             log.info("Not yet all pizzas prepared! Order with id "
 173                                     + orderId + " has " + numberOfPizzas
 174                                     + " pizzas, but only " + pizzasOfOrder.size()
 175                                     + " pizzas are ready by now!");
 176                             capi.rollbackTransaction(tx);
 177                         }
 178                     } catch (NullPointerException e) {
 179
 180                     } catch (Exception e) {
 181                         capi.rollbackTransaction(tx);
 182                     }
 183                 }
 184             }
 185         }).createSpaceListenerImpl();
 186     }
 187 }