opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ChainedCommitCohort.java

   1 /*
   2  * Copyright (c) 2015 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.cluster.datastore;
   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.yangtools.yang.data.api.schema.tree.DataTreeCandidateTip;
  15 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
  16 import org.slf4j.Logger;
  17 import org.slf4j.LoggerFactory;
  18
  19 final class ChainedCommitCohort extends ShardDataTreeCohort {
  20     private static final Logger LOG = LoggerFactory.getLogger(ChainedCommitCohort.class);
  21     private final ReadWriteShardDataTreeTransaction transaction;
  22     private final ShardDataTreeTransactionChain chain;
  23     private final ShardDataTreeCohort delegate;
  24
  25     ChainedCommitCohort(final ShardDataTreeTransactionChain chain, final ReadWriteShardDataTreeTransaction transaction, final ShardDataTreeCohort delegate) {
  26         this.transaction = Preconditions.checkNotNull(transaction);
  27         this.delegate = Preconditions.checkNotNull(delegate);
  28         this.chain = Preconditions.checkNotNull(chain);
  29     }
  30
  31     @Override
  32     public ListenableFuture<Void> commit() {
  33         final ListenableFuture<Void> ret = delegate.commit();
  34
  35         Futures.addCallback(ret, new FutureCallback<Void>() {
  36             @Override
  37             public void onSuccess(Void result) {
  38                 chain.clearTransaction(transaction);
  39                 LOG.debug("Committed transaction {}", transaction);
  40             }
  41
  42             @Override
  43             public void onFailure(Throwable t) {
  44                 LOG.error("Transaction {} commit failed, cannot recover", transaction, t);
  45             }
  46         });
  47
  48         return ret;
  49     }
  50
  51     @Override
  52     public ListenableFuture<Boolean> canCommit() {
  53         return delegate.canCommit();
  54     }
  55
  56     @Override
  57     public ListenableFuture<Void> preCommit() {
  58         return delegate.preCommit();
  59     }
  60
  61     @Override
  62     public ListenableFuture<Void> abort() {
  63         return delegate.abort();
  64     }
  65
  66     @Override
  67     DataTreeCandidateTip getCandidate() {
  68         return delegate.getCandidate();
  69     }
  70
  71     @Override
  72     DataTreeModification getDataTreeModification() {
  73         return delegate.getDataTreeModification();
  74     }
  75 }