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 java.util.concurrent.Semaphore;
  14 import org.opendaylight.controller.cluster.datastore.identifiers.TransactionIdentifier;
  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     private final Semaphore operationLimiter;
  27
  28     public NoOpTransactionContext(Throwable failure, TransactionIdentifier identifier, Semaphore operationLimiter) {
  29         super(identifier);
  30         this.failure = failure;
  31         this.operationLimiter = operationLimiter;
  32     }
  33
  34     @Override
  35     public void closeTransaction() {
  36         LOG.debug("NoOpTransactionContext {} closeTransaction called", getIdentifier());
  37     }
  38
  39     @Override
  40     public boolean supportsDirectCommit() {
  41         return true;
  42     }
  43
  44     @Override
  45     public Future<Object> directCommit() {
  46         LOG.debug("Tx {} directCommit called, failure: {}", getIdentifier(), failure);
  47         operationLimiter.release();
  48         return akka.dispatch.Futures.failed(failure);
  49     }
  50
  51     @Override
  52     public Future<ActorSelection> readyTransaction() {
  53         LOG.debug("Tx {} readyTransaction called, failure: {}", getIdentifier(), failure);
  54         operationLimiter.release();
  55         return akka.dispatch.Futures.failed(failure);
  56     }
  57
  58     @Override
  59     public void deleteData(YangInstanceIdentifier path) {
  60         LOG.debug("Tx {} deleteData called path = {}", getIdentifier(), path);
  61         operationLimiter.release();
  62     }
  63
  64     @Override
  65     public void mergeData(YangInstanceIdentifier path, NormalizedNode<?, ?> data) {
  66         LOG.debug("Tx {} mergeData called path = {}", getIdentifier(), path);
  67         operationLimiter.release();
  68     }
  69
  70     @Override
  71     public void writeData(YangInstanceIdentifier path, NormalizedNode<?, ?> data) {
  72         LOG.debug("Tx {} writeData called path = {}", getIdentifier(), path);
  73         operationLimiter.release();
  74     }
  75
  76     @Override
  77     public void readData(final YangInstanceIdentifier path, SettableFuture<Optional<NormalizedNode<?, ?>>> proxyFuture) {
  78         LOG.debug("Tx {} readData called path = {}", getIdentifier(), path);
  79         operationLimiter.release();
  80         proxyFuture.setException(new ReadFailedException("Error reading data for path " + path, failure));
  81     }
  82
  83     @Override
  84     public void dataExists(YangInstanceIdentifier path, SettableFuture<Boolean> proxyFuture) {
  85         LOG.debug("Tx {} dataExists called path = {}", getIdentifier(), path);
  86         operationLimiter.release();
  87         proxyFuture.setException(new ReadFailedException("Error checking exists for path " + path, failure));
  88     }
  89 }