opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/compat/PreLithiumTransactionContextImpl.java

   1 /*
   2  * Copyright (c) 2015 Brocade Communications 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.compat;
   9
  10 import akka.actor.ActorSelection;
  11 import org.opendaylight.controller.cluster.datastore.DataStoreVersions;
  12 import org.opendaylight.controller.cluster.datastore.OperationCompleter;
  13 import org.opendaylight.controller.cluster.datastore.TransactionContextImpl;
  14 import org.opendaylight.controller.cluster.datastore.identifiers.TransactionIdentifier;
  15 import org.opendaylight.controller.cluster.datastore.messages.DeleteData;
  16 import org.opendaylight.controller.cluster.datastore.messages.MergeData;
  17 import org.opendaylight.controller.cluster.datastore.messages.ReadyTransaction;
  18 import org.opendaylight.controller.cluster.datastore.messages.ReadyTransactionReply;
  19 import org.opendaylight.controller.cluster.datastore.messages.WriteData;
  20 import org.opendaylight.controller.cluster.datastore.utils.ActorContext;
  21 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  22 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25 import scala.concurrent.Future;
  26
  27 /**
  28  * Implementation of TransactionContextImpl used when talking to a pre-Lithium controller that doesn't
  29  * support the BatchedModifications message.
  30  *
  31  * @author Thomas Pantelis
  32  */
  33 public class PreLithiumTransactionContextImpl extends TransactionContextImpl {
  34     private static final Logger LOG = LoggerFactory.getLogger(PreLithiumTransactionContextImpl.class);
  35
  36     private final String transactionPath;
  37
  38     public PreLithiumTransactionContextImpl(String transactionPath, ActorSelection actor, TransactionIdentifier identifier,
  39             ActorContext actorContext, boolean isTxActorLocal,
  40             short remoteTransactionVersion, OperationCompleter operationCompleter) {
  41         super(actor, identifier, actorContext, isTxActorLocal, remoteTransactionVersion, operationCompleter);
  42         this.transactionPath = transactionPath;
  43     }
  44
  45     @Override
  46     public void deleteData(YangInstanceIdentifier path) {
  47         executeOperationAsync(new DeleteData(path, getRemoteTransactionVersion()));
  48     }
  49
  50     @Override
  51     public void mergeData(YangInstanceIdentifier path, NormalizedNode<?, ?> data) {
  52         executeOperationAsync(new MergeData(path, data, getRemoteTransactionVersion()));
  53     }
  54
  55     @Override
  56     public void writeData(YangInstanceIdentifier path, NormalizedNode<?, ?> data) {
  57         executeOperationAsync(new WriteData(path, data, getRemoteTransactionVersion()));
  58     }
  59
  60     @Override
  61     public Future<ActorSelection> readyTransaction() {
  62         LOG.debug("Tx {} readyTransaction called", getIdentifier());
  63
  64         // Send the ReadyTransaction message to the Tx actor.
  65
  66         Future<Object> lastReplyFuture = executeOperationAsync(ReadyTransaction.INSTANCE);
  67
  68         return transformReadyReply(lastReplyFuture);
  69     }
  70
  71     @Override
  72     protected String extractCohortPathFrom(ReadyTransactionReply readyTxReply) {
  73         // In base Helium we used to return the local path of the actor which represented
  74         // a remote ThreePhaseCommitCohort. The local path would then be converted to
  75         // a remote path using this resolvePath method. To maintain compatibility with
  76         // a Helium node we need to continue to do this conversion.
  77         // At some point in the future when upgrades from Helium are not supported
  78         // we could remove this code to resolvePath and just use the cohortPath as the
  79         // resolved cohortPath
  80         if(getRemoteTransactionVersion() < DataStoreVersions.HELIUM_1_VERSION) {
  81             return getActorContext().resolvePath(transactionPath, readyTxReply.getCohortPath());
  82         }
  83
  84         return readyTxReply.getCohortPath();
  85     }
  86
  87     @Override
  88     public boolean supportsDirectCommit() {
  89         return false;
  90     }
  91
  92     @Override
  93     public Future<Object> directCommit() {
  94         throw new UnsupportedOperationException("directCommit is not supported for " + getClass());
  95     }
  96 }