opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/sal/binding/impl/connect/dom/BindingIndependentConnector.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.sal.binding.impl.connect.dom;
   9
  10 import static com.google.common.base.Preconditions.checkArgument;
  11 import static com.google.common.base.Preconditions.checkState;
  12
  13 import java.lang.ref.WeakReference;
  14 import java.lang.reflect.InvocationHandler;
  15 import java.lang.reflect.Method;
  16 import java.lang.reflect.Proxy;
  17 import java.util.Collection;
  18 import java.util.Collections;
  19 import java.util.HashMap;
  20 import java.util.HashSet;
  21 import java.util.Map;
  22 import java.util.Map.Entry;
  23 import java.util.Set;
  24 import java.util.WeakHashMap;
  25 import java.util.concurrent.Callable;
  26 import java.util.concurrent.ConcurrentHashMap;
  27 import java.util.concurrent.ConcurrentMap;
  28 import java.util.concurrent.ExecutionException;
  29 import java.util.concurrent.Future;
  30
  31 import org.opendaylight.controller.md.sal.common.api.RegistrationListener;
  32 import org.opendaylight.controller.md.sal.common.api.TransactionStatus;
  33 import org.opendaylight.controller.md.sal.common.api.data.DataCommitHandler;
  34 import org.opendaylight.controller.md.sal.common.api.data.DataCommitHandler.DataCommitTransaction;
  35 import org.opendaylight.controller.md.sal.common.api.data.DataCommitHandlerRegistration;
  36 import org.opendaylight.controller.md.sal.common.api.data.DataModification;
  37 import org.opendaylight.controller.md.sal.common.api.data.DataReader;
  38 import org.opendaylight.controller.md.sal.common.api.routing.RouteChange;
  39 import org.opendaylight.controller.md.sal.common.api.routing.RouteChangeListener;
  40 import org.opendaylight.controller.md.sal.common.api.routing.RouteChangePublisher;
  41 import org.opendaylight.controller.sal.binding.api.NotificationProviderService;
  42 import org.opendaylight.controller.sal.binding.api.NotificationProviderService.NotificationInterestListener;
  43 import org.opendaylight.controller.sal.binding.api.RpcProviderRegistry;
  44 import org.opendaylight.controller.sal.binding.api.data.DataProviderService;
  45 import org.opendaylight.controller.sal.binding.api.data.RuntimeDataProvider;
  46 import org.opendaylight.controller.sal.binding.api.rpc.RpcContextIdentifier;
  47 import org.opendaylight.controller.sal.binding.api.rpc.RpcRouter;
  48 import org.opendaylight.yangtools.yang.data.impl.codec.BindingIndependentMappingService;
  49 import org.opendaylight.yangtools.yang.data.impl.codec.DeserializationException;
  50 import org.opendaylight.controller.sal.binding.impl.RpcProviderRegistryImpl;
  51 import org.opendaylight.controller.sal.binding.impl.RpcProviderRegistryImpl.GlobalRpcRegistrationListener;
  52 import org.opendaylight.controller.sal.binding.impl.RpcProviderRegistryImpl.RouterInstantiationListener;
  53 import org.opendaylight.controller.sal.common.util.CommitHandlerTransactions;
  54 import org.opendaylight.controller.sal.common.util.Rpcs;
  55 import org.opendaylight.controller.sal.core.api.Broker.ProviderSession;
  56 import org.opendaylight.controller.sal.core.api.Broker.RoutedRpcRegistration;
  57 import org.opendaylight.controller.sal.core.api.Provider;
  58 import org.opendaylight.controller.sal.core.api.RpcImplementation;
  59 import org.opendaylight.controller.sal.core.api.RpcProvisionRegistry;
  60 import org.opendaylight.controller.sal.core.api.data.DataModificationTransaction;
  61 import org.opendaylight.controller.sal.core.api.notify.NotificationListener;
  62 import org.opendaylight.controller.sal.core.api.notify.NotificationPublishService;
  63 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  64 import org.opendaylight.yangtools.concepts.Registration;
  65 import org.opendaylight.yangtools.concepts.util.ClassLoaderUtils;
  66 import org.opendaylight.yangtools.yang.binding.Augmentable;
  67 import org.opendaylight.yangtools.yang.binding.Augmentation;
  68 import org.opendaylight.yangtools.yang.binding.BaseIdentity;
  69 import org.opendaylight.yangtools.yang.binding.BindingMapping;
  70 import org.opendaylight.yangtools.yang.binding.DataContainer;
  71 import org.opendaylight.yangtools.yang.binding.DataObject;
  72 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  73 import org.opendaylight.yangtools.yang.binding.Notification;
  74 import org.opendaylight.yangtools.yang.binding.RpcService;
  75 import org.opendaylight.yangtools.yang.binding.util.BindingReflections;
  76 import org.opendaylight.yangtools.yang.common.QName;
  77 import org.opendaylight.yangtools.yang.common.RpcError;
  78 import org.opendaylight.yangtools.yang.common.RpcResult;
  79 import org.opendaylight.yangtools.yang.data.api.CompositeNode;
  80 import org.opendaylight.yangtools.yang.data.api.Node;
  81 import org.opendaylight.yangtools.yang.data.impl.ImmutableCompositeNode;
  82 import org.slf4j.Logger;
  83 import org.slf4j.LoggerFactory;
  84
  85 import com.google.common.base.Function;
  86 import com.google.common.base.Optional;
  87 import com.google.common.collect.FluentIterable;
  88 import com.google.common.collect.ImmutableList;
  89 import com.google.common.collect.ImmutableSet;
  90 import com.google.common.collect.ImmutableSet.Builder;
  91 import com.google.common.util.concurrent.Futures;
  92
  93 public class BindingIndependentConnector implements //
  94         RuntimeDataProvider, //
  95         Provider, //
  96         AutoCloseable {
  97
  98
  99
 100     private final Logger LOG = LoggerFactory.getLogger(BindingIndependentConnector.class);
 101
 102     @SuppressWarnings("deprecation")
 103     private static final InstanceIdentifier<? extends DataObject> ROOT = InstanceIdentifier.builder().toInstance();
 104
 105     private static final org.opendaylight.yangtools.yang.data.api.InstanceIdentifier ROOT_BI = org.opendaylight.yangtools.yang.data.api.InstanceIdentifier
 106             .builder().toInstance();
 107
 108     private final static Method EQUALS_METHOD;
 109
 110     private BindingIndependentMappingService mappingService;
 111
 112     private org.opendaylight.controller.sal.core.api.data.DataProviderService biDataService;
 113
 114     private DataProviderService baDataService;
 115
 116     private ConcurrentMap<Object, BindingToDomTransaction> domOpenedTransactions = new ConcurrentHashMap<>();
 117     private ConcurrentMap<Object, DomToBindingTransaction> bindingOpenedTransactions = new ConcurrentHashMap<>();
 118
 119     private BindingToDomCommitHandler bindingToDomCommitHandler = new BindingToDomCommitHandler();
 120     private DomToBindingCommitHandler domToBindingCommitHandler = new DomToBindingCommitHandler();
 121
 122     private Registration<DataCommitHandler<InstanceIdentifier<? extends DataObject>, DataObject>> baCommitHandlerRegistration;
 123
 124     private Registration<DataCommitHandler<org.opendaylight.yangtools.yang.data.api.InstanceIdentifier, CompositeNode>> biCommitHandlerRegistration;
 125
 126     private RpcProvisionRegistry biRpcRegistry;
 127     private RpcProviderRegistry baRpcRegistry;
 128
 129     private ListenerRegistration<DomToBindingRpcForwardingManager> domToBindingRpcManager;
 130     // private ListenerRegistration<BindingToDomRpcForwardingManager>
 131     // bindingToDomRpcManager;
 132
 133     private Function<InstanceIdentifier<?>, org.opendaylight.yangtools.yang.data.api.InstanceIdentifier> toDOMInstanceIdentifier = new Function<InstanceIdentifier<?>, org.opendaylight.yangtools.yang.data.api.InstanceIdentifier>() {
 134
 135         @Override
 136         public org.opendaylight.yangtools.yang.data.api.InstanceIdentifier apply(InstanceIdentifier<?> input) {
 137             return mappingService.toDataDom(input);
 138         }
 139
 140     };
 141
 142     private Registration<DataReader<InstanceIdentifier<? extends DataObject>, DataObject>> baDataReaderRegistration;
 143
 144     private boolean rpcForwarding = false;
 145
 146     private boolean dataForwarding = false;
 147
 148     private boolean notificationForwarding = false;
 149
 150     private RpcProviderRegistryImpl baRpcRegistryImpl;
 151
 152     private org.opendaylight.controller.sal.dom.broker.spi.RpcRouter biRouter;
 153
 154     private NotificationProviderService baNotifyService;
 155
 156     private NotificationPublishService domNotificationService;
 157
 158     static {
 159         try {
 160             EQUALS_METHOD = Object.class.getMethod("equals", Object.class);
 161         } catch (Exception e) {
 162             throw new RuntimeException(e);
 163         }
 164     }
 165
 166     @Override
 167     public DataObject readOperationalData(InstanceIdentifier<? extends DataObject> path) {
 168         try {
 169             org.opendaylight.yangtools.yang.data.api.InstanceIdentifier biPath = mappingService.toDataDom(path);
 170             CompositeNode result = biDataService.readOperationalData(biPath);
 171             return potentialAugmentationRead(path, biPath, result);
 172         } catch (DeserializationException e) {
 173             throw new IllegalStateException(e);
 174         }
 175     }
 176
 177     private DataObject potentialAugmentationRead(InstanceIdentifier<? extends DataObject> path,
 178             org.opendaylight.yangtools.yang.data.api.InstanceIdentifier biPath, CompositeNode result)
 179             throws DeserializationException {
 180         Class<? extends DataObject> targetType = path.getTargetType();
 181         if (Augmentation.class.isAssignableFrom(targetType)) {
 182             path = mappingService.fromDataDom(biPath);
 183             Class<? extends Augmentation<?>> augmentType = (Class<? extends Augmentation<?>>) targetType;
 184             DataObject parentTo = mappingService.dataObjectFromDataDom(path, result);
 185             if (parentTo instanceof Augmentable<?>) {
 186                 return (DataObject) ((Augmentable) parentTo).getAugmentation(augmentType);
 187             }
 188         }
 189         return mappingService.dataObjectFromDataDom(path, result);
 190     }
 191
 192     @Override
 193     public DataObject readConfigurationData(InstanceIdentifier<? extends DataObject> path) {
 194         try {
 195             org.opendaylight.yangtools.yang.data.api.InstanceIdentifier biPath = mappingService.toDataDom(path);
 196             CompositeNode result = biDataService.readConfigurationData(biPath);
 197             return potentialAugmentationRead(path, biPath, result);
 198         } catch (DeserializationException e) {
 199             throw new IllegalStateException(e);
 200         }
 201     }
 202
 203     private DataModificationTransaction createBindingToDomTransaction(
 204             DataModification<InstanceIdentifier<? extends DataObject>, DataObject> source) {
 205         DataModificationTransaction target = biDataService.beginTransaction();
 206         LOG.debug("Created DOM Transaction {} for {},", target.getIdentifier(),source.getIdentifier());
 207         for (Entry<InstanceIdentifier<? extends DataObject>, DataObject> entry : source.getUpdatedConfigurationData()
 208                 .entrySet()) {
 209             Entry<org.opendaylight.yangtools.yang.data.api.InstanceIdentifier, CompositeNode> biEntry = mappingService
 210                     .toDataDom(entry);
 211             target.putConfigurationData(biEntry.getKey(), biEntry.getValue());
 212             LOG.debug("Update of Binding Configuration Data {} is translated to {}",entry,biEntry);
 213         }
 214         for (Entry<InstanceIdentifier<? extends DataObject>, DataObject> entry : source.getUpdatedOperationalData()
 215                 .entrySet()) {
 216             Entry<org.opendaylight.yangtools.yang.data.api.InstanceIdentifier, CompositeNode> biEntry = mappingService
 217                     .toDataDom(entry);
 218             target.putOperationalData(biEntry.getKey(), biEntry.getValue());
 219             LOG.debug("Update of Binding Operational Data {} is translated to {}",entry,biEntry);
 220         }
 221         for (InstanceIdentifier<? extends DataObject> entry : source.getRemovedConfigurationData()) {
 222             org.opendaylight.yangtools.yang.data.api.InstanceIdentifier biEntry = mappingService.toDataDom(entry);
 223             target.removeConfigurationData(biEntry);
 224             LOG.debug("Delete of Binding Configuration Data {} is translated to {}",entry,biEntry);
 225         }
 226         for (InstanceIdentifier<? extends DataObject> entry : source.getRemovedOperationalData()) {
 227             org.opendaylight.yangtools.yang.data.api.InstanceIdentifier biEntry = mappingService.toDataDom(entry);
 228             target.removeOperationalData(biEntry);
 229             LOG.debug("Delete of Binding Operational Data {} is translated to {}",entry,biEntry);
 230         }
 231         return target;
 232     }
 233
 234     private org.opendaylight.controller.sal.binding.api.data.DataModificationTransaction createDomToBindingTransaction(
 235             DataModification<org.opendaylight.yangtools.yang.data.api.InstanceIdentifier, CompositeNode> source) {
 236         org.opendaylight.controller.sal.binding.api.data.DataModificationTransaction target = baDataService
 237                 .beginTransaction();
 238         for (Entry<org.opendaylight.yangtools.yang.data.api.InstanceIdentifier, CompositeNode> entry : source
 239                 .getUpdatedConfigurationData().entrySet()) {
 240             try {
 241                 InstanceIdentifier<?> baKey = mappingService.fromDataDom(entry.getKey());
 242                 DataObject baData = mappingService.dataObjectFromDataDom(baKey, entry.getValue());
 243                 target.putConfigurationData(baKey, baData);
 244             } catch (DeserializationException e) {
 245                 LOG.error("Ommiting from BA transaction: {}.", entry.getKey(), e);
 246             }
 247         }
 248         for (Entry<org.opendaylight.yangtools.yang.data.api.InstanceIdentifier, CompositeNode> entry : source
 249                 .getUpdatedOperationalData().entrySet()) {
 250             try {
 251
 252                 InstanceIdentifier<?> baKey = mappingService.fromDataDom(entry.getKey());
 253                 DataObject baData = mappingService.dataObjectFromDataDom(baKey, entry.getValue());
 254                 target.putOperationalData(baKey, baData);
 255             } catch (DeserializationException e) {
 256                 LOG.error("Ommiting from BA transaction: {}.", entry.getKey(), e);
 257             }
 258         }
 259         for (org.opendaylight.yangtools.yang.data.api.InstanceIdentifier entry : source.getRemovedConfigurationData()) {
 260             try {
 261
 262                 InstanceIdentifier<?> baEntry = mappingService.fromDataDom(entry);
 263                 target.removeConfigurationData(baEntry);
 264             } catch (DeserializationException e) {
 265                 LOG.error("Ommiting from BA transaction: {}.", entry, e);
 266             }
 267         }
 268         for (org.opendaylight.yangtools.yang.data.api.InstanceIdentifier entry : source.getRemovedOperationalData()) {
 269             try {
 270
 271                 InstanceIdentifier<?> baEntry = mappingService.fromDataDom(entry);
 272                 target.removeOperationalData(baEntry);
 273             } catch (DeserializationException e) {
 274                 LOG.error("Ommiting from BA transaction: {}.", entry, e);
 275             }
 276         }
 277         return target;
 278     }
 279
 280     public org.opendaylight.controller.sal.core.api.data.DataProviderService getBiDataService() {
 281         return biDataService;
 282     }
 283
 284     protected void setDomDataService(org.opendaylight.controller.sal.core.api.data.DataProviderService biDataService) {
 285         this.biDataService = biDataService;
 286     }
 287
 288     public DataProviderService getBaDataService() {
 289         return baDataService;
 290     }
 291
 292     protected void setBindingDataService(DataProviderService baDataService) {
 293         this.baDataService = baDataService;
 294     }
 295
 296     public RpcProviderRegistry getRpcRegistry() {
 297         return baRpcRegistry;
 298     }
 299
 300     protected void setBindingRpcRegistry(RpcProviderRegistry rpcRegistry) {
 301         this.baRpcRegistry = rpcRegistry;
 302     }
 303
 304     public void startDataForwarding() {
 305         checkState(!dataForwarding, "Connector is already forwarding data.");
 306         baDataReaderRegistration = baDataService.registerDataReader(ROOT, this);
 307         baCommitHandlerRegistration = baDataService.registerCommitHandler(ROOT, bindingToDomCommitHandler);
 308         biCommitHandlerRegistration = biDataService.registerCommitHandler(ROOT_BI, domToBindingCommitHandler);
 309         baDataService.registerCommitHandlerListener(domToBindingCommitHandler);
 310         dataForwarding = true;
 311     }
 312
 313     public void startRpcForwarding() {
 314         if (baRpcRegistry != null && biRpcRegistry != null && baRpcRegistry instanceof RouteChangePublisher<?, ?>) {
 315             checkState(!rpcForwarding, "Connector is already forwarding RPCs");
 316             domToBindingRpcManager = baRpcRegistry.registerRouteChangeListener(new DomToBindingRpcForwardingManager());
 317             if (baRpcRegistry instanceof RpcProviderRegistryImpl) {
 318                 baRpcRegistryImpl = (RpcProviderRegistryImpl) baRpcRegistry;
 319                 baRpcRegistryImpl.registerRouterInstantiationListener(domToBindingRpcManager.getInstance());
 320                 baRpcRegistryImpl.registerGlobalRpcRegistrationListener(domToBindingRpcManager.getInstance());
 321             }
 322             if (biRpcRegistry instanceof org.opendaylight.controller.sal.dom.broker.spi.RpcRouter) {
 323                 biRouter = (org.opendaylight.controller.sal.dom.broker.spi.RpcRouter) biRpcRegistry;
 324             }
 325             rpcForwarding = true;
 326         }
 327     }
 328
 329     public void startNotificationForwarding() {
 330         checkState(!notificationForwarding, "Connector is already forwarding notifications.");
 331         if (baNotifyService != null && domNotificationService != null) {
 332             baNotifyService.registerInterestListener(new DomToBindingNotificationForwarder());
 333
 334             notificationForwarding = true;
 335         }
 336     }
 337
 338     protected void setMappingService(BindingIndependentMappingService mappingService) {
 339         this.mappingService = mappingService;
 340     }
 341
 342     @Override
 343     public Collection<ProviderFunctionality> getProviderFunctionality() {
 344         return Collections.emptyList();
 345     }
 346
 347     @Override
 348     public void onSessionInitiated(ProviderSession session) {
 349         setDomDataService(session.getService(org.opendaylight.controller.sal.core.api.data.DataProviderService.class));
 350         setDomRpcRegistry(session.getService(RpcProvisionRegistry.class));
 351
 352     }
 353
 354     public <T extends RpcService> void onRpcRouterCreated(Class<T> serviceType, RpcRouter<T> router) {
 355
 356     }
 357
 358     public void setDomRpcRegistry(RpcProvisionRegistry registry) {
 359         biRpcRegistry = registry;
 360     }
 361
 362     @Override
 363     public void close() throws Exception {
 364         if (baCommitHandlerRegistration != null) {
 365             baCommitHandlerRegistration.close();
 366         }
 367         if (biCommitHandlerRegistration != null) {
 368             biCommitHandlerRegistration.close();
 369         }
 370
 371     }
 372
 373     private class DomToBindingTransaction implements
 374             DataCommitTransaction<org.opendaylight.yangtools.yang.data.api.InstanceIdentifier, CompositeNode> {
 375
 376         private final org.opendaylight.controller.sal.binding.api.data.DataModificationTransaction backing;
 377         private final DataModification<org.opendaylight.yangtools.yang.data.api.InstanceIdentifier, CompositeNode> modification;
 378
 379         public DomToBindingTransaction(
 380                 org.opendaylight.controller.sal.binding.api.data.DataModificationTransaction backing,
 381                 DataModification<org.opendaylight.yangtools.yang.data.api.InstanceIdentifier, CompositeNode> modification) {
 382             super();
 383             this.backing = backing;
 384             this.modification = modification;
 385             bindingOpenedTransactions.put(backing.getIdentifier(), this);
 386         }
 387
 388         @Override
 389         public DataModification<org.opendaylight.yangtools.yang.data.api.InstanceIdentifier, CompositeNode> getModification() {
 390             return modification;
 391         }
 392
 393         @Override
 394         public RpcResult<Void> rollback() throws IllegalStateException {
 395             // backing.cancel();
 396             return Rpcs.<Void> getRpcResult(true, null, Collections.<RpcError> emptySet());
 397         }
 398
 399         @Override
 400         public RpcResult<Void> finish() throws IllegalStateException {
 401             Future<RpcResult<TransactionStatus>> result = backing.commit();
 402             try {
 403                 RpcResult<TransactionStatus> baResult = result.get();
 404                 return Rpcs.<Void> getRpcResult(baResult.isSuccessful(), null, baResult.getErrors());
 405             } catch (InterruptedException e) {
 406                 throw new IllegalStateException("", e);
 407             } catch (ExecutionException e) {
 408                 throw new IllegalStateException("", e);
 409             }
 410         }
 411     }
 412
 413     private class BindingToDomTransaction implements
 414             DataCommitTransaction<InstanceIdentifier<? extends DataObject>, DataObject> {
 415
 416         private DataModificationTransaction backing;
 417         private DataModification<InstanceIdentifier<? extends DataObject>, DataObject> modification;
 418
 419         public BindingToDomTransaction(DataModificationTransaction backing,
 420                 DataModification<InstanceIdentifier<? extends DataObject>, DataObject> modification) {
 421             this.backing = backing;
 422             this.modification = modification;
 423             domOpenedTransactions.put(backing.getIdentifier(), this);
 424         }
 425
 426         @Override
 427         public DataModification<InstanceIdentifier<? extends DataObject>, DataObject> getModification() {
 428             return modification;
 429         }
 430
 431         @Override
 432         public RpcResult<Void> finish() throws IllegalStateException {
 433             Future<RpcResult<TransactionStatus>> result = backing.commit();
 434             try {
 435                 RpcResult<TransactionStatus> biResult = result.get();
 436                 return Rpcs.<Void> getRpcResult(biResult.isSuccessful(), null, biResult.getErrors());
 437             } catch (InterruptedException e) {
 438                 throw new IllegalStateException("", e);
 439             } catch (ExecutionException e) {
 440                 throw new IllegalStateException("", e);
 441             } finally {
 442                 domOpenedTransactions.remove(backing.getIdentifier());
 443             }
 444         }
 445
 446         @Override
 447         public RpcResult<Void> rollback() throws IllegalStateException {
 448             domOpenedTransactions.remove(backing.getIdentifier());
 449             return Rpcs.<Void> getRpcResult(true, null, Collections.<RpcError> emptySet());
 450         }
 451     }
 452
 453     private class BindingToDomCommitHandler implements
 454             DataCommitHandler<InstanceIdentifier<? extends DataObject>, DataObject> {
 455
 456         @Override
 457         public org.opendaylight.controller.md.sal.common.api.data.DataCommitHandler.DataCommitTransaction<InstanceIdentifier<? extends DataObject>, DataObject> requestCommit(
 458                 DataModification<InstanceIdentifier<? extends DataObject>, DataObject> bindingTransaction) {
 459
 460             /**
 461              * Transaction was created as DOM transaction, in that case we do
 462              * not need to forward it back.
 463              */
 464             if (bindingOpenedTransactions.containsKey(bindingTransaction.getIdentifier())) {
 465
 466                 return CommitHandlerTransactions.allwaysSuccessfulTransaction(bindingTransaction);
 467             }
 468             DataModificationTransaction domTransaction = createBindingToDomTransaction(bindingTransaction);
 469             BindingToDomTransaction wrapped = new BindingToDomTransaction(domTransaction, bindingTransaction);
 470             LOG.trace("Forwarding Binding Transaction: {} as DOM Transaction: {} .", bindingTransaction.getIdentifier(),
 471                     domTransaction.getIdentifier());
 472             return wrapped;
 473         }
 474     }
 475
 476     private class DomToBindingCommitHandler implements //
 477             RegistrationListener<DataCommitHandlerRegistration<InstanceIdentifier<? extends DataObject>, DataObject>>, //
 478             DataCommitHandler<org.opendaylight.yangtools.yang.data.api.InstanceIdentifier, CompositeNode> {
 479
 480         @Override
 481         public void onRegister(DataCommitHandlerRegistration<InstanceIdentifier<? extends DataObject>, DataObject> registration) {
 482
 483             org.opendaylight.yangtools.yang.data.api.InstanceIdentifier domPath = mappingService.toDataDom(registration
 484                     .getPath());
 485
 486         }
 487
 488         @Override
 489         public void onUnregister(DataCommitHandlerRegistration<InstanceIdentifier<? extends DataObject>, DataObject> registration) {
 490             // NOOP for now
 491             // FIXME: do registration based on only active commit handlers.
 492         }
 493
 494         public org.opendaylight.controller.md.sal.common.api.data.DataCommitHandler.DataCommitTransaction<org.opendaylight.yangtools.yang.data.api.InstanceIdentifier, CompositeNode> requestCommit(
 495                 DataModification<org.opendaylight.yangtools.yang.data.api.InstanceIdentifier, CompositeNode> domTransaction) {
 496             Object identifier = domTransaction.getIdentifier();
 497
 498             /**
 499              * We checks if the transcation was originated in this mapper. If it
 500              * was originated in this mapper we are returing allways success
 501              * commit hanlder to prevent creating loop in two-phase commit and
 502              * duplicating data.
 503              */
 504             if (domOpenedTransactions.containsKey(identifier)) {
 505                 return CommitHandlerTransactions.allwaysSuccessfulTransaction(domTransaction);
 506             }
 507
 508             org.opendaylight.controller.sal.binding.api.data.DataModificationTransaction baTransaction = createDomToBindingTransaction(domTransaction);
 509             DomToBindingTransaction forwardedTransaction = new DomToBindingTransaction(baTransaction, domTransaction);
 510             LOG.trace("Forwarding DOM Transaction: {} as Binding Transaction: {}.", domTransaction.getIdentifier(),
 511                     baTransaction.getIdentifier());
 512             return forwardedTransaction;
 513         }
 514     }
 515
 516     /**
 517      * Manager responsible for instantiating forwarders responsible for
 518      * forwarding of RPC invocations from DOM Broker to Binding Aware Broker
 519      *
 520      */
 521     private class DomToBindingRpcForwardingManager implements
 522             RouteChangeListener<RpcContextIdentifier, InstanceIdentifier<?>>,
 523             RouterInstantiationListener,
 524             GlobalRpcRegistrationListener {
 525
 526         private final Map<Class<? extends RpcService>, DomToBindingRpcForwarder> forwarders = new WeakHashMap<>();
 527         private RpcProviderRegistryImpl registryImpl;
 528
 529         public RpcProviderRegistryImpl getRegistryImpl() {
 530             return registryImpl;
 531         }
 532
 533         public void setRegistryImpl(RpcProviderRegistryImpl registryImpl) {
 534             this.registryImpl = registryImpl;
 535         }
 536
 537         @Override
 538         public void onGlobalRpcRegistered(Class<? extends RpcService> cls) {
 539             getRpcForwarder(cls, null);
 540         }
 541
 542         @Override
 543         public void onGlobalRpcUnregistered(Class<? extends RpcService> cls) {
 544             // NOOP
 545         }
 546
 547         @Override
 548         public void onRpcRouterCreated(RpcRouter<?> router) {
 549             Class<? extends BaseIdentity> ctx = router.getContexts().iterator().next();
 550             getRpcForwarder(router.getServiceType(), ctx);
 551         }
 552
 553         @Override
 554         public void onRouteChange(RouteChange<RpcContextIdentifier, InstanceIdentifier<?>> change) {
 555             for (Entry<RpcContextIdentifier, Set<InstanceIdentifier<?>>> entry : change.getAnnouncements().entrySet()) {
 556                 bindingRoutesAdded(entry);
 557             }
 558         }
 559
 560         private void bindingRoutesAdded(Entry<RpcContextIdentifier, Set<InstanceIdentifier<?>>> entry) {
 561             Class<? extends BaseIdentity> context = entry.getKey().getRoutingContext();
 562             Class<? extends RpcService> service = entry.getKey().getRpcService();
 563             if (context != null) {
 564                 getRpcForwarder(service, context).registerPaths(context, service, entry.getValue());
 565             }
 566         }
 567
 568         private DomToBindingRpcForwarder getRpcForwarder(Class<? extends RpcService> service,
 569                 Class<? extends BaseIdentity> context) {
 570             DomToBindingRpcForwarder potential = forwarders.get(service);
 571             if (potential != null) {
 572                 return potential;
 573             }
 574             if (context == null) {
 575                 potential = new DomToBindingRpcForwarder(service);
 576             } else {
 577                 potential = new DomToBindingRpcForwarder(service, context);
 578             }
 579
 580             forwarders.put(service, potential);
 581             return potential;
 582         }
 583
 584     }
 585
 586     private class DomToBindingRpcForwarder implements RpcImplementation, InvocationHandler {
 587
 588         private final Set<QName> supportedRpcs;
 589         private final WeakReference<Class<? extends RpcService>> rpcServiceType;
 590         private Set<org.opendaylight.controller.sal.core.api.Broker.RoutedRpcRegistration> registrations;
 591         private Map<QName, RpcInvocationStrategy> strategiesByQName = new HashMap<>();
 592         private WeakHashMap<Method, RpcInvocationStrategy> strategiesByMethod = new WeakHashMap<>();
 593
 594         public DomToBindingRpcForwarder(Class<? extends RpcService> service) {
 595             this.rpcServiceType = new WeakReference<Class<? extends RpcService>>(service);
 596             this.supportedRpcs = mappingService.getRpcQNamesFor(service);
 597             try {
 598                 for (QName rpc : supportedRpcs) {
 599                     RpcInvocationStrategy strategy = createInvocationStrategy(rpc, service);
 600                     strategiesByMethod.put(strategy.targetMethod, strategy);
 601                     strategiesByQName.put(rpc, strategy);
 602                     biRpcRegistry.addRpcImplementation(rpc, this);
 603                 }
 604
 605             } catch (Exception e) {
 606                 LOG.error("Could not forward Rpcs of type {}", service.getName(),e);
 607             }
 608             registrations = ImmutableSet.of();
 609         }
 610
 611         /**
 612          * Constructor for Routed RPC Forwareder.
 613          *
 614          * @param service
 615          * @param context
 616          */
 617         public DomToBindingRpcForwarder(Class<? extends RpcService> service, Class<? extends BaseIdentity> context) {
 618             this.rpcServiceType = new WeakReference<Class<? extends RpcService>>(service);
 619             this.supportedRpcs = mappingService.getRpcQNamesFor(service);
 620             Builder<RoutedRpcRegistration> registrationsBuilder = ImmutableSet
 621                     .<org.opendaylight.controller.sal.core.api.Broker.RoutedRpcRegistration> builder();
 622             try {
 623                 for (QName rpc : supportedRpcs) {
 624                     RpcInvocationStrategy strategy = createInvocationStrategy(rpc, service);
 625                     strategiesByMethod.put(strategy.targetMethod, strategy);
 626                     strategiesByQName.put(rpc, strategy);
 627                     registrationsBuilder.add(biRpcRegistry.addRoutedRpcImplementation(rpc, this));
 628                 }
 629                 createDefaultDomForwarder();
 630             } catch (Exception e) {
 631                 LOG.error("Could not forward Rpcs of type {}", service.getName(), e);
 632             }
 633             registrations = registrationsBuilder.build();
 634         }
 635
 636         public void registerPaths(Class<? extends BaseIdentity> context, Class<? extends RpcService> service,
 637                 Set<InstanceIdentifier<?>> set) {
 638             QName ctx = BindingReflections.findQName(context);
 639             for (org.opendaylight.yangtools.yang.data.api.InstanceIdentifier path : FluentIterable.from(set).transform(
 640                     toDOMInstanceIdentifier)) {
 641                 for (org.opendaylight.controller.sal.core.api.Broker.RoutedRpcRegistration reg : registrations) {
 642                     reg.registerPath(ctx, path);
 643                 }
 644             }
 645         }
 646
 647
 648         @Override
 649         public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
 650             if (EQUALS_METHOD.equals(method)) {
 651                 return false;
 652             }
 653             RpcInvocationStrategy strategy = strategiesByMethod.get(method);
 654             checkState(strategy != null);
 655             checkArgument(args.length <= 2);
 656             if (args.length == 1) {
 657                 checkArgument(args[0] instanceof DataObject);
 658                 return strategy.forwardToDomBroker((DataObject) args[0]);
 659             }
 660             return strategy.forwardToDomBroker(null);
 661         }
 662
 663         public void removePaths(Class<? extends BaseIdentity> context, Class<? extends RpcService> service,
 664                 Set<InstanceIdentifier<?>> set) {
 665             QName ctx = BindingReflections.findQName(context);
 666             for (org.opendaylight.yangtools.yang.data.api.InstanceIdentifier path : FluentIterable.from(set).transform(
 667                     toDOMInstanceIdentifier)) {
 668                 for (org.opendaylight.controller.sal.core.api.Broker.RoutedRpcRegistration reg : registrations) {
 669                     reg.unregisterPath(ctx, path);
 670                 }
 671             }
 672         }
 673
 674         @Override
 675         public Set<QName> getSupportedRpcs() {
 676             return supportedRpcs;
 677         }
 678
 679         @SuppressWarnings({ "unchecked", "rawtypes" })
 680         public void createDefaultDomForwarder() {
 681             if (baRpcRegistryImpl != null) {
 682                 Class<?> cls = rpcServiceType.get();
 683                 ClassLoader clsLoader = cls.getClassLoader();
 684                 RpcService proxy = (RpcService) Proxy.newProxyInstance(clsLoader, new Class<?>[] { cls }, this);
 685
 686                 RpcRouter rpcRouter = baRpcRegistryImpl.getRpcRouter(rpcServiceType.get());
 687                 rpcRouter.registerDefaultService(proxy);
 688             }
 689         }
 690
 691         @Override
 692         public RpcResult<CompositeNode> invokeRpc(QName rpc, CompositeNode domInput) {
 693             checkArgument(rpc != null);
 694             checkArgument(domInput != null);
 695
 696             Class<? extends RpcService> rpcType = rpcServiceType.get();
 697             checkState(rpcType != null);
 698             RpcService rpcService = baRpcRegistry.getRpcService(rpcType);
 699             checkState(rpcService != null);
 700             CompositeNode domUnwrappedInput = domInput.getFirstCompositeByName(QName.create(rpc, "input"));
 701             try {
 702                 return resolveInvocationStrategy(rpc).invokeOn(rpcService, domUnwrappedInput);
 703             } catch (Exception e) {
 704                 throw new IllegalStateException(e);
 705             }
 706         }
 707
 708         private RpcInvocationStrategy resolveInvocationStrategy(QName rpc) {
 709             return strategiesByQName.get(rpc);
 710         }
 711
 712         private RpcInvocationStrategy createInvocationStrategy(final QName rpc,
 713                 final Class<? extends RpcService> rpcType) throws Exception {
 714             return ClassLoaderUtils.withClassLoader(rpcType.getClassLoader(), new Callable<RpcInvocationStrategy>() {
 715                 @Override
 716                 public RpcInvocationStrategy call() throws Exception {
 717                     String methodName = BindingMapping.getMethodName(rpc);
 718                     Method targetMethod = null;
 719                     for (Method possibleMethod : rpcType.getMethods()) {
 720                         if (possibleMethod.getName().equals(methodName)
 721                                 && BindingReflections.isRpcMethod(possibleMethod)) {
 722                             targetMethod = possibleMethod;
 723                             break;
 724                         }
 725                     }
 726                     checkState(targetMethod != null, "Rpc method not found");
 727                     Optional<Class<?>> outputClass = BindingReflections.resolveRpcOutputClass(targetMethod);
 728                     Optional<Class<? extends DataContainer>> inputClass = BindingReflections
 729                             .resolveRpcInputClass(targetMethod);
 730
 731                     RpcInvocationStrategy strategy = null;
 732                     if (outputClass.isPresent()) {
 733                         if (inputClass.isPresent()) {
 734                             strategy = new DefaultInvocationStrategy(rpc, targetMethod, outputClass.get(), inputClass
 735                                     .get());
 736                         } else {
 737                             strategy = new NoInputNoOutputInvocationStrategy(rpc, targetMethod);
 738                         }
 739                     } else if(inputClass.isPresent()){
 740                         strategy = new NoOutputInvocationStrategy(rpc,targetMethod, inputClass.get());
 741                     } else {
 742                         strategy = new NoInputNoOutputInvocationStrategy(rpc,targetMethod);
 743                     }
 744                     return strategy;
 745                 }
 746
 747             });
 748         }
 749     }
 750
 751     private abstract class RpcInvocationStrategy {
 752
 753         protected final Method targetMethod;
 754         protected final QName rpc;
 755
 756         public RpcInvocationStrategy(QName rpc, Method targetMethod) {
 757             this.targetMethod = targetMethod;
 758             this.rpc = rpc;
 759         }
 760
 761         public abstract Future<RpcResult<?>> forwardToDomBroker(DataObject input);
 762
 763         public abstract RpcResult<CompositeNode> uncheckedInvoke(RpcService rpcService, CompositeNode domInput)
 764                 throws Exception;
 765
 766         public RpcResult<CompositeNode> invokeOn(RpcService rpcService, CompositeNode domInput) throws Exception {
 767             return uncheckedInvoke(rpcService, domInput);
 768         }
 769     }
 770
 771     private class DefaultInvocationStrategy extends RpcInvocationStrategy {
 772
 773         @SuppressWarnings("rawtypes")
 774         private WeakReference<Class> inputClass;
 775
 776         @SuppressWarnings("rawtypes")
 777         private WeakReference<Class> outputClass;
 778
 779         @SuppressWarnings({ "rawtypes", "unchecked" })
 780         public DefaultInvocationStrategy(QName rpc, Method targetMethod, Class<?> outputClass,
 781                 Class<? extends DataContainer> inputClass) {
 782             super(rpc, targetMethod);
 783             this.outputClass = new WeakReference(outputClass);
 784             this.inputClass = new WeakReference(inputClass);
 785         }
 786
 787         @SuppressWarnings("unchecked")
 788         @Override
 789         public RpcResult<CompositeNode> uncheckedInvoke(RpcService rpcService, CompositeNode domInput) throws Exception {
 790             DataContainer bindingInput = mappingService.dataObjectFromDataDom(inputClass.get(), domInput);
 791             Future<RpcResult<?>> futureResult = (Future<RpcResult<?>>) targetMethod.invoke(rpcService, bindingInput);
 792             if (futureResult == null) {
 793                 return Rpcs.getRpcResult(false);
 794             }
 795             RpcResult<?> bindingResult = futureResult.get();
 796             final Object resultObj = bindingResult.getResult();
 797             if (resultObj instanceof DataObject) {
 798                 final CompositeNode output = mappingService.toDataDom((DataObject)resultObj);
 799                 return Rpcs.getRpcResult(true, output, Collections.<RpcError>emptySet());
 800             }
 801             return Rpcs.getRpcResult(true);
 802         }
 803
 804         @Override
 805         public Future<RpcResult<?>> forwardToDomBroker(DataObject input) {
 806             if(biRouter != null) {
 807                 CompositeNode xml = mappingService.toDataDom(input);
 808                 CompositeNode wrappedXml = ImmutableCompositeNode.create(rpc, ImmutableList.<Node<?>> of(xml));
 809                 RpcResult<CompositeNode> result = biRouter.invokeRpc(rpc, wrappedXml);
 810                 Object baResultValue = null;
 811                 if (result.getResult() != null) {
 812                     baResultValue = mappingService.dataObjectFromDataDom(outputClass.get(), result.getResult());
 813                 }
 814                 RpcResult<?> baResult = Rpcs.getRpcResult(result.isSuccessful(), baResultValue, result.getErrors());
 815                 return Futures.<RpcResult<?>> immediateFuture(baResult);
 816             }
 817             return Futures.<RpcResult<?>> immediateFuture(Rpcs.getRpcResult(false));
 818         }
 819
 820     }
 821
 822     private class NoInputNoOutputInvocationStrategy extends RpcInvocationStrategy {
 823
 824         public NoInputNoOutputInvocationStrategy(QName rpc, Method targetMethod) {
 825             super(rpc, targetMethod);
 826         }
 827
 828         public RpcResult<CompositeNode> uncheckedInvoke(RpcService rpcService, CompositeNode domInput) throws Exception {
 829             @SuppressWarnings("unchecked")
 830             Future<RpcResult<Void>> result = (Future<RpcResult<Void>>) targetMethod.invoke(rpcService);
 831             RpcResult<Void> bindingResult = result.get();
 832             return Rpcs.getRpcResult(bindingResult.isSuccessful(), bindingResult.getErrors());
 833         }
 834
 835         @Override
 836         public Future<RpcResult<?>> forwardToDomBroker(DataObject input) {
 837             return Futures.immediateFuture(null);
 838         }
 839     }
 840
 841     private class NoOutputInvocationStrategy extends RpcInvocationStrategy {
 842
 843
 844         @SuppressWarnings("rawtypes")
 845         private WeakReference<Class> inputClass;
 846
 847         @SuppressWarnings({ "rawtypes", "unchecked" })
 848         public NoOutputInvocationStrategy(QName rpc, Method targetMethod,
 849                 Class<? extends DataContainer> inputClass) {
 850             super(rpc,targetMethod);
 851             this.inputClass = new WeakReference(inputClass);
 852         }
 853
 854
 855         @Override
 856         public RpcResult<CompositeNode> uncheckedInvoke(RpcService rpcService, CompositeNode domInput) throws Exception {
 857             DataContainer bindingInput = mappingService.dataObjectFromDataDom(inputClass.get(), domInput);
 858             Future<RpcResult<?>> result = (Future<RpcResult<?>>) targetMethod.invoke(rpcService, bindingInput);
 859             if (result == null) {
 860                 return Rpcs.getRpcResult(false);
 861             }
 862             RpcResult<?> bindingResult = result.get();
 863             return Rpcs.getRpcResult(true);
 864         }
 865
 866         @Override
 867         public Future<RpcResult<?>> forwardToDomBroker(DataObject input) {
 868             if(biRouter != null) {
 869                 CompositeNode xml = mappingService.toDataDom(input);
 870                 CompositeNode wrappedXml = ImmutableCompositeNode.create(rpc,ImmutableList.<Node<?>>of(xml));
 871                 RpcResult<CompositeNode> result = biRouter.invokeRpc(rpc, wrappedXml);
 872                 Object baResultValue = null;
 873                 RpcResult<?> baResult = Rpcs.<Void>getRpcResult(result.isSuccessful(), null, result.getErrors());
 874                 return Futures.<RpcResult<?>>immediateFuture(baResult);
 875             }
 876             return Futures.<RpcResult<?>>immediateFuture(Rpcs.getRpcResult(false));
 877         }
 878
 879     }
 880
 881     public boolean isRpcForwarding() {
 882         return rpcForwarding;
 883     }
 884
 885     public boolean isDataForwarding() {
 886         return dataForwarding;
 887     }
 888
 889     public boolean isNotificationForwarding() {
 890         return notificationForwarding;
 891     }
 892
 893     public BindingIndependentMappingService getMappingService() {
 894         return mappingService;
 895     }
 896
 897     public void setBindingNotificationService(NotificationProviderService baService) {
 898         this.baNotifyService = baService;
 899
 900     }
 901
 902     public void setDomNotificationService(NotificationPublishService domService) {
 903         this.domNotificationService = domService;
 904     }
 905
 906     private class DomToBindingNotificationForwarder implements NotificationInterestListener, NotificationListener {
 907
 908         private ConcurrentMap<QName, WeakReference<Class<? extends Notification>>> notifications = new ConcurrentHashMap<>();
 909         private Set<QName> supportedNotifications = new HashSet<>();
 910
 911         @Override
 912         public Set<QName> getSupportedNotifications() {
 913             return Collections.unmodifiableSet(supportedNotifications);
 914         }
 915
 916         @Override
 917         public void onNotification(CompositeNode notification) {
 918             QName qname = notification.getNodeType();
 919             WeakReference<Class<? extends Notification>> potential = notifications.get(qname);
 920             if (potential != null) {
 921                 Class<? extends Notification> potentialClass = potential.get();
 922                 if (potentialClass != null) {
 923                     final DataContainer baNotification = mappingService.dataObjectFromDataDom(potentialClass,
 924                             notification);
 925
 926                     if (baNotification instanceof Notification) {
 927                         baNotifyService.publish((Notification) baNotification);
 928                     }
 929                 }
 930             }
 931         }
 932
 933         @Override
 934         public void onNotificationSubscribtion(Class<? extends Notification> notificationType) {
 935             QName qname = BindingReflections.findQName(notificationType);
 936             if (qname != null) {
 937                 WeakReference<Class<? extends Notification>> already = notifications.putIfAbsent(qname,
 938                         new WeakReference<Class<? extends Notification>>(notificationType));
 939                 if (already == null) {
 940                     domNotificationService.addNotificationListener(qname, this);
 941                     supportedNotifications.add(qname);
 942                 }
 943             }
 944         }
 945     }
 946 }