opendaylight/md-sal/cds-access-api/src/main/java/org/opendaylight/controller/cluster/access/commands/ReadTransactionSuccessProxyV1.java

   1 /*
   2  * Copyright (c) 2016 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.access.commands;
   9
  10 import com.google.common.base.Optional;
  11 import java.io.IOException;
  12 import java.io.ObjectInput;
  13 import java.io.ObjectOutput;
  14 import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
  15 import org.opendaylight.controller.cluster.datastore.node.utils.stream.NormalizedNodeDataOutput;
  16 import org.opendaylight.controller.cluster.datastore.node.utils.stream.NormalizedNodeInputOutput;
  17 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  18
  19 /**
  20  * Externalizable proxy for use with {@link ReadTransactionSuccess}. It implements the initial (Boron) serialization
  21  * format.
  22  *
  23  * @author Robert Varga
  24  */
  25 final class ReadTransactionSuccessProxyV1 extends AbstractTransactionSuccessProxy<ReadTransactionSuccess> {
  26     private static final long serialVersionUID = 1L;
  27     private Optional<NormalizedNode<?, ?>> data;
  28
  29     public ReadTransactionSuccessProxyV1() {
  30         // For Externalizable
  31     }
  32
  33     ReadTransactionSuccessProxyV1(final ReadTransactionSuccess request) {
  34         super(request);
  35         this.data = request.getData();
  36     }
  37
  38     @Override
  39     public void writeExternal(final ObjectOutput out) throws IOException {
  40         super.writeExternal(out);
  41
  42         if (data.isPresent()) {
  43             out.writeBoolean(true);
  44             try (NormalizedNodeDataOutput nnout = NormalizedNodeInputOutput.newDataOutput(out)) {
  45                 nnout.writeNormalizedNode(data.get());
  46             }
  47         } else {
  48             out.writeBoolean(false);
  49         }
  50
  51         out.writeObject(data);
  52     }
  53
  54     @Override
  55     public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
  56         super.readExternal(in);
  57
  58         if (in.readBoolean()) {
  59             data = Optional.of(NormalizedNodeInputOutput.newDataInput(in).readNormalizedNode());
  60         } else {
  61             data = Optional.absent();
  62         }
  63     }
  64
  65     @Override
  66     protected ReadTransactionSuccess createSuccess(final TransactionIdentifier target, final long sequence,
  67             final long retry) {
  68         return new ReadTransactionSuccess(target, sequence, retry, data);
  69     }
  70 }