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.cluster.datastore.identifiers.TransactionIdentifier;
  15 import org.opendaylight.controller.md.sal.common.api.data.DataStoreUnavailableException;
  16 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  17 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  18 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  19 import org.slf4j.Logger;
  20 import org.slf4j.LoggerFactory;
  21 import scala.concurrent.Future;
  22
  23 final class NoOpTransactionContext extends AbstractTransactionContext {
  24     private static final Logger LOG = LoggerFactory.getLogger(NoOpTransactionContext.class);
  25
  26     private final Throwable failure;
  27     private final OperationLimiter operationLimiter;
  28
  29     public NoOpTransactionContext(Throwable failure, TransactionIdentifier identifier, OperationLimiter operationLimiter) {
  30         super(identifier);
  31         this.failure = failure;
  32         this.operationLimiter = operationLimiter;
  33     }
  34
  35     @Override
  36     public void closeTransaction() {
  37         LOG.debug("NoOpTransactionContext {} closeTransaction called", getIdentifier());
  38     }
  39
  40     @Override
  41     public boolean supportsDirectCommit() {
  42         return true;
  43     }
  44
  45     @Override
  46     public Future<Object> directCommit() {
  47         LOG.debug("Tx {} directCommit called, failure: {}", getIdentifier(), failure);
  48         operationLimiter.release();
  49         return akka.dispatch.Futures.failed(failure);
  50     }
  51
  52     @Override
  53     public Future<ActorSelection> readyTransaction() {
  54         LOG.debug("Tx {} readyTransaction called, failure: {}", getIdentifier(), failure);
  55         operationLimiter.release();
  56         return akka.dispatch.Futures.failed(failure);
  57     }
  58
  59     @Override
  60     public void deleteData(YangInstanceIdentifier path) {
  61         LOG.debug("Tx {} deleteData called path = {}", getIdentifier(), path);
  62         operationLimiter.release();
  63     }
  64
  65     @Override
  66     public void mergeData(YangInstanceIdentifier path, NormalizedNode<?, ?> data) {
  67         LOG.debug("Tx {} mergeData called path = {}", getIdentifier(), path);
  68         operationLimiter.release();
  69     }
  70
  71     @Override
  72     public void writeData(YangInstanceIdentifier path, NormalizedNode<?, ?> data) {
  73         LOG.debug("Tx {} writeData called path = {}", getIdentifier(), path);
  74         operationLimiter.release();
  75     }
  76
  77     @Override
  78     public void readData(final YangInstanceIdentifier path, SettableFuture<Optional<NormalizedNode<?, ?>>> proxyFuture) {
  79         LOG.debug("Tx {} readData called path = {}", getIdentifier(), path);
  80         operationLimiter.release();
  81         Throwable t;
  82         if(failure instanceof NoShardLeaderException) {
  83             t = new DataStoreUnavailableException(failure.getMessage(), failure);
  84         } else {
  85             t = failure;
  86         }
  87         proxyFuture.setException(new ReadFailedException("Error reading data for path " + path, t));
  88     }
  89
  90     @Override
  91     public void dataExists(YangInstanceIdentifier path, SettableFuture<Boolean> proxyFuture) {
  92         LOG.debug("Tx {} dataExists called path = {}", getIdentifier(), path);
  93         operationLimiter.release();
  94         proxyFuture.setException(new ReadFailedException("Error checking exists for path " + path, failure));
  95     }
  96 }