opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/messages/ReadData.java

   1 /*
   2  * Copyright (c) 2014 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
   9 package org.opendaylight.controller.cluster.datastore.messages;
  10
  11 import com.google.common.base.Optional;
  12 import com.google.common.util.concurrent.CheckedFuture;
  13 import com.google.common.util.concurrent.SettableFuture;
  14 import org.opendaylight.controller.cluster.datastore.util.InstanceIdentifierUtils;
  15 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  16 import org.opendaylight.controller.protobuff.messages.transaction.ShardTransactionMessages;
  17 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
  18 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  19 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  20
  21 public class ReadData extends AbstractRead<Optional<NormalizedNode<?, ?>>> {
  22   public static final Class<ShardTransactionMessages.ReadData> SERIALIZABLE_CLASS =
  23           ShardTransactionMessages.ReadData.class;
  24
  25   public ReadData(final YangInstanceIdentifier path) {
  26     super(path);
  27   }
  28
  29   public Object toSerializable(){
  30     return ShardTransactionMessages.ReadData.newBuilder()
  31         .setInstanceIdentifierPathArguments(InstanceIdentifierUtils.toSerializable(getPath()))
  32         .build();
  33   }
  34
  35   public static ReadData fromSerializable(final Object serializable){
  36     ShardTransactionMessages.ReadData o = (ShardTransactionMessages.ReadData) serializable;
  37     return new ReadData(InstanceIdentifierUtils.fromSerializable(o.getInstanceIdentifierPathArguments()));
  38   }
  39
  40     @Override
  41     public CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> apply(DOMStoreReadTransaction readDelegate) {
  42         return readDelegate.read(getPath());
  43     }
  44
  45     @Override
  46     public void processResponse(Object readResponse, SettableFuture<Optional<NormalizedNode<?, ?>>> returnFuture) {
  47         if(readResponse instanceof ReadDataReply) {
  48             ReadDataReply reply = (ReadDataReply) readResponse;
  49             returnFuture.set(Optional.<NormalizedNode<?, ?>> fromNullable(reply.getNormalizedNode()));
  50
  51         } else if(ReadDataReply.isSerializedType(readResponse)) {
  52             ReadDataReply reply = ReadDataReply.fromSerializable(readResponse);
  53             returnFuture.set(Optional.<NormalizedNode<?, ?>> fromNullable(reply.getNormalizedNode()));
  54
  55         } else {
  56             returnFuture.setException(new ReadFailedException("Invalid response reading data for path " + getPath()));
  57         }
  58     }
  59 }