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