opendaylight/md-sal/sal-inmemory-datastore/src/main/java/org/opendaylight/controller/md/sal/dom/store/impl/ChainedTransactionCommitImpl.java

   1 /*
   2  * Copyright (c) 2014 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.md.sal.dom.store.impl;
   9
  10 import com.google.common.base.Preconditions;
  11 import com.google.common.util.concurrent.FutureCallback;
  12 import com.google.common.util.concurrent.Futures;
  13 import com.google.common.util.concurrent.ListenableFuture;
  14 import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
  15
  16 final class ChainedTransactionCommitImpl implements DOMStoreThreePhaseCommitCohort {
  17     private final SnapshotBackedWriteTransaction transaction;
  18     private final DOMStoreThreePhaseCommitCohort delegate;
  19     private final DOMStoreTransactionChainImpl txChain;
  20
  21     protected ChainedTransactionCommitImpl(final SnapshotBackedWriteTransaction transaction,
  22             final DOMStoreThreePhaseCommitCohort delegate, final DOMStoreTransactionChainImpl txChain) {
  23         this.transaction = Preconditions.checkNotNull(transaction);
  24         this.delegate = Preconditions.checkNotNull(delegate);
  25         this.txChain = Preconditions.checkNotNull(txChain);
  26     }
  27
  28     @Override
  29     public ListenableFuture<Boolean> canCommit() {
  30         return delegate.canCommit();
  31     }
  32
  33     @Override
  34     public ListenableFuture<Void> preCommit() {
  35         return delegate.preCommit();
  36     }
  37
  38     @Override
  39     public ListenableFuture<Void> abort() {
  40         return delegate.abort();
  41     }
  42
  43     @Override
  44     public ListenableFuture<Void> commit() {
  45         ListenableFuture<Void> commitFuture = delegate.commit();
  46         Futures.addCallback(commitFuture, new FutureCallback<Void>() {
  47             @Override
  48             public void onFailure(final Throwable t) {
  49                 txChain.onTransactionFailed(transaction, t);
  50             }
  51
  52             @Override
  53             public void onSuccess(final Void result) {
  54                 txChain.onTransactionCommited(transaction);
  55             }
  56         });
  57         return commitFuture;
  58     }
  59 }