opendaylight/md-sal/sal-dom-compat/src/main/java/org/opendaylight/controller/sal/core/compat/LegacyDOMDataBrokerAdapter.java

   1 /*
   2  * Copyright (c) 2017 Inocybe Technologies 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.core.compat;
   9
  10 import com.google.common.base.Optional;
  11 import com.google.common.base.Preconditions;
  12 import com.google.common.collect.ClassToInstanceMap;
  13 import com.google.common.collect.ForwardingObject;
  14 import com.google.common.collect.ImmutableClassToInstanceMap;
  15 import com.google.common.collect.ImmutableClassToInstanceMap.Builder;
  16 import com.google.common.util.concurrent.CheckedFuture;
  17 import com.google.common.util.concurrent.FluentFuture;
  18 import com.google.common.util.concurrent.FutureCallback;
  19 import com.google.common.util.concurrent.MoreExecutors;
  20 import com.google.common.util.concurrent.SettableFuture;
  21 import java.util.Map;
  22 import java.util.concurrent.atomic.AtomicReference;
  23 import java.util.function.Supplier;
  24 import javax.annotation.Nonnull;
  25 import org.opendaylight.controller.md.sal.common.api.MappingCheckedFuture;
  26 import org.opendaylight.controller.md.sal.common.api.data.AsyncTransaction;
  27 import org.opendaylight.controller.md.sal.common.api.data.DataStoreUnavailableException;
  28 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  29 import org.opendaylight.controller.md.sal.common.api.data.OptimisticLockFailedException;
  30 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  31 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainClosedException;
  32 import org.opendaylight.controller.md.sal.common.api.data.TransactionChainListener;
  33 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  34 import org.opendaylight.controller.md.sal.dom.api.ClusteredDOMDataTreeChangeListener;
  35 import org.opendaylight.controller.md.sal.dom.api.DOMDataBroker;
  36 import org.opendaylight.controller.md.sal.dom.api.DOMDataBrokerExtension;
  37 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadOnlyTransaction;
  38 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadWriteTransaction;
  39 import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeListener;
  40 import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeChangeService;
  41 import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeCommitCohortRegistry;
  42 import org.opendaylight.controller.md.sal.dom.api.DOMDataTreeIdentifier;
  43 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
  44 import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
  45 import org.opendaylight.mdsal.common.api.CommitInfo;
  46 import org.opendaylight.mdsal.dom.api.DOMDataTreeReadTransaction;
  47 import org.opendaylight.mdsal.dom.api.DOMDataTreeReadWriteTransaction;
  48 import org.opendaylight.mdsal.dom.api.DOMDataTreeTransaction;
  49 import org.opendaylight.mdsal.dom.api.DOMDataTreeWriteTransaction;
  50 import org.opendaylight.mdsal.dom.api.DOMTransactionChainClosedException;
  51 import org.opendaylight.mdsal.dom.api.DOMTransactionChainListener;
  52 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  53 import org.opendaylight.yangtools.util.concurrent.ExceptionMapper;
  54 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  55 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  56
  57 /**
  58  * Adapter between the legacy controller API-based DOMDataBroker and the mdsal API-based DOMDataBroker.
  59  *
  60  * @author Thomas Pantelis
  61  */
  62 public class LegacyDOMDataBrokerAdapter extends ForwardingObject implements DOMDataBroker {
  63     private static final ExceptionMapper<TransactionCommitFailedException> COMMIT_EX_MAPPER =
  64             new ExceptionMapper<TransactionCommitFailedException>("commit", TransactionCommitFailedException.class) {
  65         @Override
  66         protected TransactionCommitFailedException newWithCause(final String message, final Throwable cause) {
  67             if (cause instanceof org.opendaylight.mdsal.common.api.OptimisticLockFailedException) {
  68                 return new OptimisticLockFailedException(cause.getMessage(), cause.getCause());
  69             } else if (cause instanceof org.opendaylight.mdsal.common.api.TransactionCommitFailedException) {
  70                 Throwable rootCause = cause.getCause();
  71                 if (rootCause instanceof org.opendaylight.mdsal.common.api.DataStoreUnavailableException) {
  72                     rootCause = new DataStoreUnavailableException(rootCause.getMessage(), rootCause.getCause());
  73                 }
  74
  75                 return new TransactionCommitFailedException(cause.getMessage(), rootCause);
  76             }
  77
  78             return new TransactionCommitFailedException(message, cause);
  79         }
  80     };
  81
  82     private final org.opendaylight.mdsal.dom.api.DOMDataBroker delegate;
  83     private final ClassToInstanceMap<DOMDataBrokerExtension> extensions;
  84
  85     public LegacyDOMDataBrokerAdapter(final org.opendaylight.mdsal.dom.api.DOMDataBroker delegate) {
  86         this.delegate = delegate;
  87
  88         ClassToInstanceMap<org.opendaylight.mdsal.dom.api.DOMDataBrokerExtension> delegateExtensions =
  89                 delegate.getExtensions();
  90
  91         Builder<DOMDataBrokerExtension> extBuilder = ImmutableClassToInstanceMap.builder();
  92         final org.opendaylight.mdsal.dom.api.DOMDataTreeChangeService delegateTreeChangeService =
  93                 (org.opendaylight.mdsal.dom.api.DOMDataTreeChangeService) delegateExtensions.get(
  94                         org.opendaylight.mdsal.dom.api.DOMDataTreeChangeService.class);
  95         if (delegateTreeChangeService != null) {
  96             extBuilder.put(DOMDataTreeChangeService.class, new DOMDataTreeChangeService() {
  97                 @Override
  98                 public <L extends DOMDataTreeChangeListener> ListenerRegistration<L> registerDataTreeChangeListener(
  99                         final DOMDataTreeIdentifier treeId, final L listener) {
 100                     final org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener delegateListener;
 101                     if (listener instanceof ClusteredDOMDataTreeChangeListener) {
 102                         delegateListener = (org.opendaylight.mdsal.dom.api.ClusteredDOMDataTreeChangeListener)
 103                             listener::onDataTreeChanged;
 104                     } else {
 105                         delegateListener = listener::onDataTreeChanged;
 106                     }
 107
 108                     final ListenerRegistration<org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener> reg =
 109                         delegateTreeChangeService.registerDataTreeChangeListener(
 110                             new org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier(
 111                                 treeId.getDatastoreType().toMdsal(), treeId.getRootIdentifier()), delegateListener);
 112
 113                     return new ListenerRegistration<L>() {
 114                         @Override
 115                         public L getInstance() {
 116                             return listener;
 117                         }
 118
 119                         @Override
 120                         public void close() {
 121                             reg.close();
 122                         }
 123                     };
 124                 }
 125             });
 126         }
 127
 128         final org.opendaylight.mdsal.dom.api.DOMDataTreeCommitCohortRegistry delegateCohortRegistry =
 129                 (org.opendaylight.mdsal.dom.api.DOMDataTreeCommitCohortRegistry) delegateExtensions.get(
 130                         org.opendaylight.mdsal.dom.api.DOMDataTreeCommitCohortRegistry.class);
 131         if (delegateCohortRegistry != null) {
 132             extBuilder.put(DOMDataTreeCommitCohortRegistry.class, delegateCohortRegistry::registerCommitCohort);
 133         }
 134
 135         extensions = extBuilder.build();
 136     }
 137
 138     @Override
 139     protected org.opendaylight.mdsal.dom.api.DOMDataBroker delegate() {
 140         return delegate;
 141     }
 142
 143     @Override
 144     public Map<Class<? extends DOMDataBrokerExtension>, DOMDataBrokerExtension> getSupportedExtensions() {
 145         return extensions;
 146     }
 147
 148     @Override
 149     public DOMDataReadOnlyTransaction newReadOnlyTransaction() {
 150         return new DOMDataReadOnlyTransactionAdapter(delegate().newReadOnlyTransaction());
 151     }
 152
 153     @Override
 154     public DOMDataReadWriteTransaction newReadWriteTransaction() {
 155         return new DOMDataTransactionAdapter(delegate().newReadWriteTransaction());
 156     }
 157
 158     @Override
 159     public DOMDataWriteTransaction newWriteOnlyTransaction() {
 160         return new DOMDataTransactionAdapter(delegate().newWriteOnlyTransaction());
 161     }
 162
 163     @Override
 164     public DOMTransactionChain createTransactionChain(final TransactionChainListener listener) {
 165         AtomicReference<DOMTransactionChain> legacyChain = new AtomicReference<>();
 166         DOMTransactionChainListener delegateListener =
 167                 new DOMTransactionChainListener() {
 168             @Override
 169             @SuppressWarnings("rawtypes")
 170             public void onTransactionChainFailed(final org.opendaylight.mdsal.dom.api.DOMTransactionChain chain,
 171                     final DOMDataTreeTransaction transaction, final Throwable cause) {
 172                 listener.onTransactionChainFailed(legacyChain.get(),
 173                     (AsyncTransaction) () -> transaction.getIdentifier(),
 174                         cause instanceof Exception ? COMMIT_EX_MAPPER.apply((Exception)cause) : cause);
 175             }
 176
 177             @Override
 178             public void onTransactionChainSuccessful(final org.opendaylight.mdsal.dom.api.DOMTransactionChain chain) {
 179                 listener.onTransactionChainSuccessful(legacyChain.get());
 180             }
 181         };
 182
 183         final org.opendaylight.mdsal.dom.api.DOMTransactionChain delegateChain =
 184                 delegate().createTransactionChain(delegateListener);
 185         legacyChain.set(new DOMTransactionChain() {
 186             @Override
 187             public DOMDataReadOnlyTransaction newReadOnlyTransaction() {
 188                 return new DOMDataReadOnlyTransactionAdapter(wrapException(delegateChain::newReadOnlyTransaction));
 189             }
 190
 191             @Override
 192             public DOMDataReadWriteTransaction newReadWriteTransaction() {
 193                 return new DOMDataTransactionAdapter(wrapException(delegateChain::newReadWriteTransaction));
 194             }
 195
 196             @Override
 197             public DOMDataWriteTransaction newWriteOnlyTransaction() {
 198                 return new DOMDataTransactionAdapter(wrapException(delegateChain::newWriteOnlyTransaction));
 199             }
 200
 201             @Override
 202             public void close() {
 203                 delegateChain.close();
 204             }
 205         });
 206
 207         return legacyChain.get();
 208     }
 209
 210     static <T> T wrapException(final Supplier<T> supplier) {
 211         try {
 212             return supplier.get();
 213         } catch (DOMTransactionChainClosedException e) {
 214             throw new TransactionChainClosedException("Transaction chain already closed", e);
 215         }
 216     }
 217
 218     private static class DOMDataTransactionAdapter implements DOMDataReadWriteTransaction {
 219         private final DOMDataTreeReadTransaction readDelegate;
 220         private final DOMDataTreeWriteTransaction writeDelegate;
 221         private final Object identifier;
 222
 223         DOMDataTransactionAdapter(@Nonnull final DOMDataTreeReadTransaction readDelegate) {
 224             this.readDelegate = Preconditions.checkNotNull(readDelegate);
 225             this.identifier = readDelegate.getIdentifier();
 226             this.writeDelegate = null;
 227         }
 228
 229         DOMDataTransactionAdapter(@Nonnull final DOMDataTreeWriteTransaction writeDelegate) {
 230             this.writeDelegate = Preconditions.checkNotNull(writeDelegate);
 231             this.identifier = writeDelegate.getIdentifier();
 232             this.readDelegate = null;
 233         }
 234
 235         DOMDataTransactionAdapter(@Nonnull final DOMDataTreeReadWriteTransaction rwDelegate) {
 236             this.readDelegate = Preconditions.checkNotNull(rwDelegate);
 237             this.writeDelegate = rwDelegate;
 238             this.identifier = readDelegate.getIdentifier();
 239         }
 240
 241         DOMDataTreeReadTransaction readDelegate() {
 242             return readDelegate;
 243         }
 244
 245         DOMDataTreeWriteTransaction writeDelegate() {
 246             return writeDelegate;
 247         }
 248
 249         @Override
 250         public Object getIdentifier() {
 251             return identifier;
 252         }
 253
 254         @Override
 255         public CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> read(LogicalDatastoreType store,
 256                 YangInstanceIdentifier path) {
 257             return MappingCheckedFuture.create(readDelegate().read(store.toMdsal(), path).transform(
 258                 Optional::fromJavaUtil, MoreExecutors.directExecutor()), ReadFailedExceptionAdapter.INSTANCE);
 259         }
 260
 261         @Override
 262         public CheckedFuture<Boolean, ReadFailedException> exists(LogicalDatastoreType store,
 263                 YangInstanceIdentifier path) {
 264             return MappingCheckedFuture.create(readDelegate().exists(store.toMdsal(), path),
 265                     ReadFailedExceptionAdapter.INSTANCE);
 266         }
 267
 268         @Override
 269         public void delete(LogicalDatastoreType store, YangInstanceIdentifier path) {
 270             writeDelegate().delete(store.toMdsal(), path);
 271         }
 272
 273         @Override
 274         public void put(LogicalDatastoreType store, YangInstanceIdentifier path, NormalizedNode<?, ?> data) {
 275             writeDelegate().put(store.toMdsal(), path, data);
 276         }
 277
 278         @Override
 279         public void merge(LogicalDatastoreType store, YangInstanceIdentifier path, NormalizedNode<?, ?> data) {
 280             writeDelegate().merge(store.toMdsal(), path, data);
 281         }
 282
 283         @Override
 284         public boolean cancel() {
 285             return writeDelegate().cancel();
 286         }
 287
 288         @Override
 289         public FluentFuture<? extends CommitInfo> commit() {
 290             final SettableFuture<CommitInfo> resultFuture = SettableFuture.create();
 291             writeDelegate().commit().addCallback(new FutureCallback<CommitInfo>() {
 292                 @Override
 293                 public void onSuccess(final CommitInfo result) {
 294                     resultFuture.set(result);
 295                 }
 296
 297                 @Override
 298                 public void onFailure(final Throwable ex) {
 299                     if (ex instanceof Exception) {
 300                         resultFuture.setException(COMMIT_EX_MAPPER.apply((Exception)ex));
 301                     } else {
 302                         resultFuture.setException(ex);
 303                     }
 304                 }
 305             }, MoreExecutors.directExecutor());
 306
 307             return resultFuture;
 308         }
 309     }
 310
 311     private static class DOMDataReadOnlyTransactionAdapter implements DOMDataReadOnlyTransaction {
 312         private final DOMDataTransactionAdapter adapter;
 313
 314         DOMDataReadOnlyTransactionAdapter(final DOMDataTreeReadTransaction delegateTx) {
 315             adapter = new DOMDataTransactionAdapter(delegateTx);
 316         }
 317
 318         @Override
 319         public CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> read(final LogicalDatastoreType store,
 320                 final YangInstanceIdentifier path) {
 321             return adapter.read(store, path);
 322         }
 323
 324         @Override
 325         public CheckedFuture<Boolean, ReadFailedException> exists(final LogicalDatastoreType store,
 326                 final YangInstanceIdentifier path) {
 327             return adapter.exists(store, path);
 328         }
 329
 330         @Override
 331         public Object getIdentifier() {
 332             return adapter.getIdentifier();
 333         }
 334
 335         @Override
 336         public void close() {
 337             adapter.readDelegate().close();
 338         }
 339     }
 340 }