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.base.Optional;
  12 import com.google.common.util.concurrent.SettableFuture;
  13 import org.opendaylight.controller.cluster.datastore.exceptions.NoShardLeaderException;
  14 import org.opendaylight.controller.md.sal.common.api.data.DataStoreUnavailableException;
  15 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  16 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  17 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  18 import org.slf4j.Logger;
  19 import org.slf4j.LoggerFactory;
  20 import scala.concurrent.Future;
  21
  22 final class NoOpTransactionContext extends AbstractTransactionContext {
  23     private static final Logger LOG = LoggerFactory.getLogger(NoOpTransactionContext.class);
  24
  25     private final Throwable failure;
  26
  27     public NoOpTransactionContext(Throwable failure, OperationLimiter limiter) {
  28         super(limiter);
  29         this.failure = failure;
  30     }
  31
  32     @Override
  33     public void closeTransaction() {
  34         LOG.debug("NoOpTransactionContext {} closeTransaction called", getIdentifier());
  35     }
  36
  37     @Override
  38     public boolean supportsDirectCommit() {
  39         return true;
  40     }
  41
  42     @Override
  43     public Future<Object> directCommit() {
  44         LOG.debug("Tx {} directCommit called, failure: {}", getIdentifier(), failure);
  45         releaseOperation();
  46         return akka.dispatch.Futures.failed(failure);
  47     }
  48
  49     @Override
  50     public Future<ActorSelection> readyTransaction() {
  51         LOG.debug("Tx {} readyTransaction called, failure: {}", getIdentifier(), failure);
  52         releaseOperation();
  53         return akka.dispatch.Futures.failed(failure);
  54     }
  55
  56     @Override
  57     public void deleteData(YangInstanceIdentifier path) {
  58         LOG.debug("Tx {} deleteData called path = {}", getIdentifier(), path);
  59         releaseOperation();
  60     }
  61
  62     @Override
  63     public void mergeData(YangInstanceIdentifier path, NormalizedNode<?, ?> data) {
  64         LOG.debug("Tx {} mergeData called path = {}", getIdentifier(), path);
  65         releaseOperation();
  66     }
  67
  68     @Override
  69     public void writeData(YangInstanceIdentifier path, NormalizedNode<?, ?> data) {
  70         LOG.debug("Tx {} writeData called path = {}", getIdentifier(), path);
  71         releaseOperation();
  72     }
  73
  74     @Override
  75     public void readData(final YangInstanceIdentifier path, SettableFuture<Optional<NormalizedNode<?, ?>>> proxyFuture) {
  76         LOG.debug("Tx {} readData called path = {}", getIdentifier(), path);
  77         releaseOperation();
  78
  79         final Throwable t;
  80         if (failure instanceof NoShardLeaderException) {
  81             t = new DataStoreUnavailableException(failure.getMessage(), failure);
  82         } else {
  83             t = failure;
  84         }
  85         proxyFuture.setException(new ReadFailedException("Error reading data for path " + path, t));
  86     }
  87
  88     @Override
  89     public void dataExists(YangInstanceIdentifier path, SettableFuture<Boolean> proxyFuture) {
  90         LOG.debug("Tx {} dataExists called path = {}", getIdentifier(), path);
  91         releaseOperation();
  92         proxyFuture.setException(new ReadFailedException("Error checking exists for path " + path, failure));
  93     }
  94 }