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