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             String transactionChainId, ActorContext actorContext, boolean isTxActorLocal,
  40             short remoteTransactionVersion, OperationCompleter operationCompleter) {
  41         super(actor, identifier, transactionChainId, actorContext, isTxActorLocal,
  42                 remoteTransactionVersion, operationCompleter);
  43         this.transactionPath = transactionPath;
  44     }
  45
  46     @Override
  47     public void deleteData(YangInstanceIdentifier path) {
  48         executeOperationAsync(new DeleteData(path, getRemoteTransactionVersion()));
  49     }
  50
  51     @Override
  52     public void mergeData(YangInstanceIdentifier path, NormalizedNode<?, ?> data) {
  53         executeOperationAsync(new MergeData(path, data, getRemoteTransactionVersion()));
  54     }
  55
  56     @Override
  57     public void writeData(YangInstanceIdentifier path, NormalizedNode<?, ?> data) {
  58         executeOperationAsync(new WriteData(path, data, getRemoteTransactionVersion()));
  59     }
  60
  61     @Override
  62     public Future<ActorSelection> readyTransaction() {
  63         LOG.debug("Tx {} readyTransaction called", getIdentifier());
  64
  65         // Send the ReadyTransaction message to the Tx actor.
  66
  67         Future<Object> lastReplyFuture = executeOperationAsync(ReadyTransaction.INSTANCE);
  68
  69         return transformReadyReply(lastReplyFuture);
  70     }
  71
  72     @Override
  73     protected String extractCohortPathFrom(ReadyTransactionReply readyTxReply) {
  74         // In base Helium we used to return the local path of the actor which represented
  75         // a remote ThreePhaseCommitCohort. The local path would then be converted to
  76         // a remote path using this resolvePath method. To maintain compatibility with
  77         // a Helium node we need to continue to do this conversion.
  78         // At some point in the future when upgrades from Helium are not supported
  79         // we could remove this code to resolvePath and just use the cohortPath as the
  80         // resolved cohortPath
  81         if(getRemoteTransactionVersion() < DataStoreVersions.HELIUM_1_VERSION) {
  82             return getActorContext().resolvePath(transactionPath, readyTxReply.getCohortPath());
  83         }
  84
  85         return readyTxReply.getCohortPath();
  86     }
  87
  88     @Override
  89     public boolean supportsDirectCommit() {
  90         return false;
  91     }
  92
  93     @Override
  94     public Future<Object> directCommit() {
  95         throw new UnsupportedOperationException("directCommit is not supported for " + getClass());
  96     }
  97 }