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