opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/NoOpTransactionContext.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 akka.actor.ActorSelection;
  11 import com.google.common.util.concurrent.SettableFuture;
  12 import java.util.Optional;
  13 import java.util.SortedSet;
  14 import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
  15 import org.opendaylight.controller.cluster.datastore.exceptions.NoShardLeaderException;
  16 import org.opendaylight.controller.cluster.datastore.messages.AbstractRead;
  17 import org.opendaylight.controller.cluster.datastore.modification.AbstractModification;
  18 import org.opendaylight.mdsal.common.api.DataStoreUnavailableException;
  19 import org.opendaylight.mdsal.common.api.ReadFailedException;
  20 import org.slf4j.Logger;
  21 import org.slf4j.LoggerFactory;
  22 import scala.concurrent.Future;
  23
  24 final class NoOpTransactionContext extends AbstractTransactionContext {
  25     private static final Logger LOG = LoggerFactory.getLogger(NoOpTransactionContext.class);
  26
  27     private final Throwable failure;
  28
  29     NoOpTransactionContext(final Throwable failure, final TransactionIdentifier identifier) {
  30         super(identifier);
  31         this.failure = failure;
  32     }
  33
  34     @Override
  35     public void closeTransaction() {
  36         LOG.debug("NoOpTransactionContext {} closeTransaction called", getIdentifier());
  37     }
  38
  39     @Override
  40     public Future<Object> directCommit(final Boolean havePermit) {
  41         LOG.debug("Tx {} directCommit called, failure: {}", getIdentifier(), failure);
  42         return akka.dispatch.Futures.failed(failure);
  43     }
  44
  45     @Override
  46     public Future<ActorSelection> readyTransaction(final Boolean havePermit,
  47             final Optional<SortedSet<String>> participatingShardNamess) {
  48         LOG.debug("Tx {} readyTransaction called, failure: {}", getIdentifier(), failure);
  49         return akka.dispatch.Futures.failed(failure);
  50     }
  51
  52     @Override
  53     public void executeModification(final AbstractModification modification, final Boolean havePermit) {
  54         LOG.debug("Tx {} executeModification {} called path = {}", getIdentifier(),
  55                 modification.getClass().getSimpleName(), modification.getPath());
  56     }
  57
  58     @Override
  59     public <T> void executeRead(final AbstractRead<T> readCmd, final SettableFuture<T> proxyFuture,
  60             final Boolean havePermit) {
  61         LOG.debug("Tx {} executeRead {} called path = {}", getIdentifier(), readCmd.getClass().getSimpleName(),
  62                 readCmd.getPath());
  63
  64         final Throwable t;
  65         if (failure instanceof NoShardLeaderException) {
  66             t = new DataStoreUnavailableException(failure.getMessage(), failure);
  67         } else {
  68             t = failure;
  69         }
  70         proxyFuture.setException(new ReadFailedException("Error executeRead " + readCmd.getClass().getSimpleName()
  71                 + " for path " + readCmd.getPath(), t));
  72     }
  73 }