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

   1 package at.ac.tuwien.sbc.valesriegler.xvsm;
   2
   3 import at.ac.tuwien.sbc.valesriegler.common.Util;
   4 import at.ac.tuwien.sbc.valesriegler.types.*;
   5 import at.ac.tuwien.sbc.valesriegler.xvsm.spacehelpers.SpaceAction;
   6 import org.mozartspaces.core.MzsConstants.RequestTimeout;
   7 import org.mozartspaces.core.MzsCoreException;
   8 import org.mozartspaces.core.TransactionReference;
   9 import org.slf4j.Logger;
  10 import org.slf4j.LoggerFactory;
  11
  12 import java.io.Serializable;
  13 import java.net.URI;
  14 import java.util.Arrays;
  15 import java.util.Collections;
  16 import java.util.List;
  17
  18 public class CookXVSM extends AbstractXVSMConnector {
  19     private static final Logger log = LoggerFactory.getLogger(CookXVSM.class);
  20
  21     private int cookId;
  22
  23     public CookXVSM(int id, int port) {
  24         super(port);
  25
  26         this.cookId = id;
  27         orderTakenContainer = useContainer(Util.ORDER_TAKEN);
  28         deliveryOrderTakenContainer = useContainer(Util.DELIVERY_ORDER_TAKEN);
  29         preparedPizzasContainer = useContainer(Util.DELIVER_PIZZAS);
  30         preparePizzasContainer = useContainer(Util.PREPARE_PIZZAS);
  31         prepareDeliveryPizzasContainer = useContainer(Util.PREPARE_DELIVERY_PIZZAS);
  32         pizzaInProgressContainer = useContainer(Util.PIZZAS_IN_PROGRESS);
  33         preparedDeliveryPizzasContainer = useContainer(Util.DELIVER_DELIVERY_PIZZAS);
  34         pizzeriaGroupContainer = useContainer(Util.PIZZERIA_GROUP);
  35         pizzeriaDeliveryContainer = useContainer(Util.PIZZERIA_DELIVERY);
  36     }
  37
  38     public void listenForPizzas() {
  39        getDefaultBuilder("").setLookaround(true).setCref(preparePizzasContainer).setTimeout(15000).setSpaceAction(new SpaceAction() {
  40
  41             @Override
  42             public void onEntriesWritten(List<? extends Serializable> entries)
  43                     throws Exception {
  44
  45                 List<PizzaOrder> pizzas = castEntries(entries);
  46
  47                 if (inNotification.get()) Collections.shuffle(pizzas);
  48
  49                 for (PizzaOrder pizzaOrder : pizzas) {
  50
  51                     TransactionReference tx = capi.createTransaction(9000, URI.create(String.format(Util.SERVER_ADDR, port)));
  52                     String pizzaAlreadyCooked = String.format("Normal pizza with id %d has already been cooked by another cook", pizzaOrder.getId());
  53
  54                     try {
  55                         if (!mayPrepareCustomerPizza(pizzaOrder, tx)) {
  56                             capi.rollbackTransaction(tx);
  57                             continue;
  58                         }
  59
  60                         // Require the lock for preparing the pizza
  61                         PizzaOrder order = takeMatchingEntity(new PizzaOrder(pizzaOrder.getId()), preparePizzasContainer, tx, RequestTimeout.ZERO, pizzaAlreadyCooked);
  62
  63                         // tell the space that you prepare the pizza -> without a transaction!!
  64                         Pizza pizzaInProgress = Pizza.createPizzaFromPizzaOrder(order, cookId, true);
  65                         pizzaInProgress.setStatus(PizzaOrderStatus.IN_PREPARATION);
  66
  67                         notifyCustomerPizzaInProgress(order, pizzaInProgress);
  68
  69                         PizzaOrder pizza = createPizza(order);
  70
  71                         notifyCustomerPizzaDone(pizza, tx);
  72                         capi.commitTransaction(tx);
  73                         log.debug("I have completed preparing a pizza for order {}!", pizza.getOrderId());
  74                     } catch (NullPointerException e) {
  75                         // the strange nullpointer exception from the space
  76                     } catch (EntityNotFoundByTemplate e) {
  77                         log.info("entitynotfound: {}", e.getMessage());
  78                     } catch (Exception e) {
  79                         log.error("outer cook");
  80                         log.error(e.getMessage());
  81                     }
  82
  83                 }
  84             }
  85         }).createSpaceListenerImpl();
  86
  87     }
  88
  89     public void listenForDeliveryPizzas() {
  90         getDefaultBuilder("").setLookaround(true).setCref(prepareDeliveryPizzasContainer).setTimeout(15000).setSpaceAction(new SpaceAction() {
  91
  92             @Override
  93             public void onEntriesWritten(List<? extends Serializable> entries)
  94                     throws Exception {
  95
  96                 List<PizzaOrder> pizzas = castEntries(entries);
  97
  98                 if (inNotification.get()) Collections.shuffle(pizzas);
  99
 100                 for (PizzaOrder pizzaOrder : pizzas) {
 101
 102                     TransactionReference tx = capi.createTransaction(12000, URI.create(String.format(Util.SERVER_ADDR, port)));
 103                     String pizzaAlreadyCooked = String.format("Delivery Pizza with id %d has already been cooked by another cook", pizzaOrder.getId());
 104
 105                     try {
 106                         if (!mayPrepareDeliveryPizza(tx)) {
 107                             capi.rollbackTransaction(tx);
 108                             continue;
 109                         }
 110
 111                         // Require the lock for preparing the pizza
 112                         PizzaOrder order = takeMatchingEntity(new PizzaOrder(pizzaOrder.getId()), prepareDeliveryPizzasContainer, tx, RequestTimeout.ZERO, pizzaAlreadyCooked);
 113
 114                         // tell the space that you prepare the pizza -> without a transaction!!
 115                         Pizza pizzaInProgress = Pizza.createPizzaFromPizzaOrder(order, cookId, true);
 116                         pizzaInProgress.setStatus(PizzaOrderStatus.IN_PREPARATION);
 117
 118                         notifyDeliveryPizzaInProgress(order, pizzaInProgress);
 119
 120                         log.debug("before creating!");
 121
 122                         PizzaOrder pizza = createPizza(order);
 123
 124                         log.debug("after creating!");
 125
 126                         sendItemsToContainer(Arrays.asList(pizza), preparedDeliveryPizzasContainer, RequestTimeout.DEFAULT, tx);
 127
 128                         log.debug("after prepareddeliverypizzascon");
 129
 130                         notifyDeliveryPizzaDone(pizza, tx);
 131
 132                         log.debug("after notifydone");
 133
 134                         capi.commitTransaction(tx);
 135                         log.debug("I have completed preparing a delivery pizza for order {}!", pizza.getOrderId());
 136                     } catch (NullPointerException e) {
 137                         // the strange nullpointer exception from the space
 138                     } catch (EntityNotFoundByTemplate e) {
 139                         log.info("entitynotfound: {}", e.getMessage());
 140
 141                     } catch (Exception e) {
 142                         log.error("outer cook");
 143                         log.error(e.getMessage());
 144                     }
 145
 146                 }
 147             }
 148         }).createSpaceListenerImpl();
 149
 150     }
 151
 152     /**
 153      * A cook may prepare a pizza if there is no current delivery order or if at least a pizza of the same order is
 154      * in preparation or has been done!
 155      */
 156     private boolean mayPrepareCustomerPizza(PizzaOrder pizzaOrder, TransactionReference tx) throws MzsCoreException {
 157         List<PizzaOrder> deliveryPizzas = readMatchingEntities(new PizzaOrder(), prepareDeliveryPizzasContainer, tx, RequestTimeout.DEFAULT, "MAYPREPAREPIZZA: Cannot access prepareDeliveryPizzasContainer");
 158         if (!deliveryPizzas.isEmpty()) {
 159             final PizzaOrder template = new PizzaOrder();
 160             template.setOrderId(pizzaOrder.getOrderId());
 161             final List<PizzaOrder> pizzasAlreadyDone = readMatchingEntities(template, preparedPizzasContainer, tx, RequestTimeout.DEFAULT, "MAYPREPAREPIZZA: Cannot access preparedPizzasContainer");
 162             if(! pizzasAlreadyDone.isEmpty()) return true;
 163             final List<PizzaOrder> pizzasOfOrderInProgress = readMatchingEntities(template, pizzaInProgressContainer, tx, RequestTimeout.DEFAULT, "MAYPREPAREPIZZA:: Cannot access pizzaInProgressContainer");
 164             if (! pizzasOfOrderInProgress.isEmpty()) return true;
 165
 166             return false;
 167         }
 168         else return true;
 169     }
 170
 171
 172     private boolean mayPrepareDeliveryPizza(TransactionReference tx) throws MzsCoreException {
 173         final PizzaOrder template = new PizzaOrder();
 174         template.setDeliveryPizza(false);
 175         final List<PizzaOrder> preparedNonDeliveryPizzas  = readMatchingEntities(template, preparedPizzasContainer, tx, RequestTimeout.DEFAULT, "mayPrepareDeliveryPizza: cannot access preparedPizzasContainer");
 176         if(! preparedNonDeliveryPizzas.isEmpty()) return false;
 177         final List<PizzaOrder> nonDeliveryPizzasInProgress = readMatchingEntities(template, pizzaInProgressContainer, tx, RequestTimeout.DEFAULT, "mayPrepareDeliveryPizza: cannot access pizzaInProgressContainer");
 178         if (! nonDeliveryPizzasInProgress.isEmpty()) return false;
 179
 180         return true;
 181     }
 182
 183     private void notifyCustomerPizzaDone(PizzaOrder pizza, TransactionReference tx) throws MzsCoreException {
 184         sendItemsToContainer(Arrays.asList(pizza), preparedPizzasContainer, RequestTimeout.DEFAULT, tx);
 185         final GroupData group = new GroupData();
 186         final Order groupOrder = new Order();
 187         groupOrder.setId(pizza.getOrderId());
 188         group.setOrder(groupOrder);
 189         group.setState(GroupState.ORDERED);
 190         GroupData groupData = takeMatchingEntity(group, pizzeriaGroupContainer, tx, RequestTimeout.INFINITE, "Cannot take the group from pizzeriaGroupContainer");
 191         final List<PizzaOrder> orderedPizzas = groupData.getOrder().getOrderedPizzas();
 192         for (PizzaOrder orderedPizza : orderedPizzas) {
 193             if (orderedPizza.getId() == pizza.getId()) {
 194                 orderedPizza.setStatus(PizzaOrderStatus.DONE);
 195                 orderedPizza.setCookId(pizza.getCookId());
 196             }
 197         }
 198         sendItemsToContainer(Arrays.asList(groupData), pizzeriaGroupContainer, RequestTimeout.DEFAULT, tx);
 199     }
 200
 201     private void notifyDeliveryPizzaDone(PizzaOrder pizza, TransactionReference tx) throws MzsCoreException {
 202         final DeliveryGroupData group = new DeliveryGroupData();
 203         final Order groupOrder = new Order();
 204         groupOrder.setId(pizza.getOrderId());
 205         group.setOrder(groupOrder);
 206         group.setDeliveryStatus(null);
 207         DeliveryGroupData groupData = takeMatchingEntity(group, pizzeriaDeliveryContainer, tx, RequestTimeout.INFINITE, "Cannot take the delivery order from pizzeriaDeliveryContainer");
 208         final List<PizzaOrder> orderedPizzas = groupData.getOrder().getOrderedPizzas();
 209         for (PizzaOrder orderedPizza : orderedPizzas) {
 210             if (orderedPizza.getId() == pizza.getId()) {
 211                 orderedPizza.setStatus(PizzaOrderStatus.DONE);
 212                 orderedPizza.setCookId(pizza.getCookId());
 213             }
 214         }
 215         sendItemsToContainer(Arrays.asList(groupData), pizzeriaDeliveryContainer, RequestTimeout.DEFAULT, tx);
 216     }
 217
 218     private void notifyDeliveryPizzaInProgress(PizzaOrder order, Pizza pizzaInProgress) throws MzsCoreException {
 219         log.info("I say that I now prepare a delivery pizza for order {}", pizzaInProgress.getOrderId());
 220         final DeliveryGroupData groupTemplate = new DeliveryGroupData();
 221         final Order groupOrder = new Order();
 222         groupOrder.setId(order.getOrderId());
 223         groupTemplate.setOrder(groupOrder);
 224         groupTemplate.setDeliveryStatus(null);
 225         final TransactionReference inPreparationTx = getDefaultTransaction();
 226         final DeliveryGroupData groupFromSpace = takeMatchingEntity(groupTemplate, pizzeriaDeliveryContainer, inPreparationTx, RequestTimeout.DEFAULT, "Cannot take the delivery order from pizzeriaDeliveryContainer");
 227         final List<PizzaOrder> orderedPizzas = groupFromSpace.getOrder().getOrderedPizzas();
 228         for (PizzaOrder orderedPizza : orderedPizzas) {
 229             if (orderedPizza.getId() == pizzaInProgress.getId()) {
 230                 orderedPizza.setStatus(PizzaOrderStatus.IN_PREPARATION);
 231                 orderedPizza.setCookId(pizzaInProgress.getCookId());
 232             }
 233         }
 234         sendItemsToContainer(Arrays.asList(groupFromSpace), pizzeriaDeliveryContainer, RequestTimeout.DEFAULT, inPreparationTx);
 235         sendItemsToContainer(Arrays.asList(pizzaInProgress), pizzaInProgressContainer, RequestTimeout.DEFAULT, inPreparationTx);
 236         log.debug("before inprogress comit!");
 237         capi.commitTransaction(inPreparationTx);
 238     }
 239
 240     private void notifyCustomerPizzaInProgress(PizzaOrder order, Pizza pizzaInProgress) {
 241         try {
 242             log.debug("I say that I now prepare a pizza for order {}", pizzaInProgress.getOrderId());
 243             final GroupData groupTemplate = new GroupData();
 244             final Order groupOrder = new Order();
 245             groupOrder.setId(order.getOrderId());
 246             groupTemplate.setOrder(groupOrder);
 247             groupTemplate.setState(null);
 248             final TransactionReference inPreparationTx = getDefaultTransaction();
 249             final GroupData groupFromSpace = takeMatchingEntity(groupTemplate, pizzeriaGroupContainer, inPreparationTx, 100, "Cannot take the order from pizzeriaGroupContainer");
 250             final List<PizzaOrder> orderedPizzas = groupFromSpace.getOrder().getOrderedPizzas();
 251             for (PizzaOrder orderedPizza : orderedPizzas) {
 252                 if (orderedPizza.getId() == pizzaInProgress.getId()) {
 253                     orderedPizza.setStatus(PizzaOrderStatus.IN_PREPARATION);
 254                     orderedPizza.setCookId(pizzaInProgress.getCookId());
 255                 }
 256             }
 257             sendItemsToContainer(Arrays.asList(groupFromSpace), pizzeriaGroupContainer, RequestTimeout.ZERO, inPreparationTx);
 258             sendItemsToContainer(Arrays.asList(pizzaInProgress), pizzaInProgressContainer, RequestTimeout.ZERO, inPreparationTx);
 259             capi.commitTransaction(inPreparationTx);
 260         } catch (Exception e) {
 261             log.error("This error has occurred: {}", e.getMessage());
 262             e.printStackTrace();
 263         }
 264     }
 265
 266     private PizzaOrder createPizza(PizzaOrder order) throws InterruptedException {
 267         long duration = order.getPizzaType().duration;
 268         if (! Util.runSimulation) {
 269             Thread.sleep(duration * 1000);
 270         }
 271
 272         PizzaOrder pizza = Pizza.createPizzaFromPizzaOrder(order, cookId, false);
 273         pizza.setStatus(PizzaOrderStatus.DONE);
 274         return pizza;
 275     }
 276
 277 }