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.CheckedFuture;
  13 import com.google.common.util.concurrent.Futures;
  14 import java.util.concurrent.Semaphore;
  15 import org.opendaylight.controller.cluster.datastore.identifiers.TransactionIdentifier;
  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 Semaphore operationLimiter;
  28
  29     public NoOpTransactionContext(Throwable failure, TransactionIdentifier identifier, Semaphore 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", identifier);
  38     }
  39
  40     @Override
  41     public Future<ActorSelection> readyTransaction() {
  42         LOG.debug("Tx {} readyTransaction called", identifier);
  43         operationLimiter.release();
  44         return akka.dispatch.Futures.failed(failure);
  45     }
  46
  47     @Override
  48     public void deleteData(YangInstanceIdentifier path) {
  49         LOG.debug("Tx {} deleteData called path = {}", identifier, path);
  50         operationLimiter.release();
  51     }
  52
  53     @Override
  54     public void mergeData(YangInstanceIdentifier path, NormalizedNode<?, ?> data) {
  55         LOG.debug("Tx {} mergeData called path = {}", identifier, path);
  56         operationLimiter.release();
  57     }
  58
  59     @Override
  60     public void writeData(YangInstanceIdentifier path, NormalizedNode<?, ?> data) {
  61         LOG.debug("Tx {} writeData called path = {}", identifier, path);
  62         operationLimiter.release();
  63     }
  64
  65     @Override
  66     public CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> readData(
  67             YangInstanceIdentifier path) {
  68         LOG.debug("Tx {} readData called path = {}", identifier, path);
  69         operationLimiter.release();
  70         return Futures.immediateFailedCheckedFuture(new ReadFailedException(
  71                 "Error reading data for path " + path, failure));
  72     }
  73
  74     @Override
  75     public CheckedFuture<Boolean, ReadFailedException> dataExists(
  76             YangInstanceIdentifier path) {
  77         LOG.debug("Tx {} dataExists called path = {}", identifier, path);
  78         operationLimiter.release();
  79         return Futures.immediateFailedCheckedFuture(new ReadFailedException(
  80                 "Error checking exists for path " + path, failure));
  81     }
  82 }