opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/modification/WriteModification.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.modification;
  10
  11 import java.io.IOException;
  12 import java.io.ObjectInput;
  13 import java.io.ObjectOutput;
  14 import org.opendaylight.controller.cluster.datastore.DataStoreVersions;
  15 import org.opendaylight.controller.cluster.datastore.node.NormalizedNodeToNodeCodec;
  16 import org.opendaylight.controller.cluster.datastore.node.NormalizedNodeToNodeCodec.Decoded;
  17 import org.opendaylight.controller.cluster.datastore.node.NormalizedNodeToNodeCodec.Encoded;
  18 import org.opendaylight.controller.cluster.datastore.utils.SerializationUtils;
  19 import org.opendaylight.controller.cluster.datastore.utils.SerializationUtils.Applier;
  20 import org.opendaylight.controller.protobuff.messages.persistent.PersistentMessages;
  21 import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction;
  22 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  23 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  24 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
  25
  26 /**
  27  * WriteModification stores all the parameters required to write data to the specified path
  28  */
  29 public class WriteModification extends AbstractModification {
  30     private static final long serialVersionUID = 1L;
  31
  32     private NormalizedNode<?, ?> data;
  33
  34     public WriteModification() {
  35         this(DataStoreVersions.CURRENT_VERSION);
  36     }
  37
  38     public WriteModification(short version) {
  39         super(version);
  40     }
  41
  42     public WriteModification(final YangInstanceIdentifier path, final NormalizedNode<?, ?> data) {
  43         super(path);
  44         this.data = data;
  45     }
  46
  47     @Override
  48     public void apply(final DOMStoreWriteTransaction transaction) {
  49         transaction.write(getPath(), data);
  50     }
  51
  52     @Override
  53     public void apply(final DataTreeModification transaction) {
  54         transaction.write(getPath(), data);
  55     }
  56
  57     public NormalizedNode<?, ?> getData() {
  58         return data;
  59     }
  60
  61     @Override
  62     public byte getType() {
  63         return WRITE;
  64     }
  65
  66     @Override
  67     public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
  68         SerializationUtils.deserializePathAndNode(in, this, APPLIER);
  69     }
  70
  71     @Override
  72     public void writeExternal(ObjectOutput out) throws IOException {
  73         SerializationUtils.serializePathAndNode(getPath(), data, out);
  74     }
  75
  76     @Override
  77     @Deprecated
  78     public Object toSerializable() {
  79         Encoded encoded = new NormalizedNodeToNodeCodec(null).encode(getPath(), getData());
  80         return PersistentMessages.Modification.newBuilder().setType(this.getClass().toString())
  81                 .setPath(encoded.getEncodedPath()).setData(encoded.getEncodedNode()
  82                         .getNormalizedNode()).build();
  83     }
  84
  85     @Deprecated
  86     public static WriteModification fromSerializable(final Object serializable) {
  87         PersistentMessages.Modification o = (PersistentMessages.Modification) serializable;
  88         Decoded decoded = new NormalizedNodeToNodeCodec(null).decode(o.getPath(), o.getData());
  89         return new WriteModification(decoded.getDecodedPath(), decoded.getDecodedNode());
  90     }
  91
  92     public static WriteModification fromStream(ObjectInput in, short version)
  93             throws ClassNotFoundException, IOException {
  94         WriteModification mod = new WriteModification(version);
  95         mod.readExternal(in);
  96         return mod;
  97     }
  98
  99     private static final Applier<WriteModification> APPLIER = new Applier<WriteModification>() {
 100         @Override
 101         public void apply(WriteModification instance, YangInstanceIdentifier path,
 102                 NormalizedNode<?, ?> node) {
 103             instance.setPath(path);
 104             instance.data = node;
 105         }
 106     };
 107 }