opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/PingPongFuture.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.broker.impl;
   9
  10 import com.google.common.base.Preconditions;
  11 import com.google.common.util.concurrent.AbstractCheckedFuture;
  12 import com.google.common.util.concurrent.ListenableFuture;
  13 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  14
  15 /**
  16  * A {@link Future} used to report the status of an future {@link java.util.concurrent.Future}.
  17  */
  18 final class PingPongFuture extends AbstractCheckedFuture<Void, TransactionCommitFailedException> {
  19     protected PingPongFuture(final ListenableFuture<Void> delegate) {
  20         super(delegate);
  21     }
  22
  23     @Override
  24     protected TransactionCommitFailedException mapException(final Exception e) {
  25         Preconditions.checkArgument(e instanceof TransactionCommitFailedException);
  26         return (TransactionCommitFailedException) e;
  27     }
  28 }