opendaylight/md-sal/cds-access-api/src/main/java/org/opendaylight/controller/cluster/access/commands/AbstractReadPathTransactionRequestProxyV1.java

   1 /*
   2  * Copyright (c) 2017 Pantheon Technologies, s.r.o. 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 akka.actor.ActorRef;
  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.yangtools.yang.data.api.YangInstanceIdentifier;
  16 import org.opendaylight.yangtools.yang.data.codec.binfmt.NormalizedNodeDataInput;
  17 import org.opendaylight.yangtools.yang.data.codec.binfmt.NormalizedNodeDataOutput;
  18 import org.opendaylight.yangtools.yang.data.codec.binfmt.NormalizedNodeStreamVersion;
  19
  20 /**
  21  * Abstract base class for serialization proxies associated with {@link AbstractReadTransactionRequest}s. It implements
  22  * the initial (Boron) serialization format.
  23  *
  24  * @author Robert Varga
  25  *
  26  * @param <T> Message type
  27  */
  28 abstract class AbstractReadPathTransactionRequestProxyV1<T extends AbstractReadPathTransactionRequest<T>>
  29         extends AbstractReadTransactionRequestProxyV1<T> {
  30     private static final long serialVersionUID = 1L;
  31
  32     private YangInstanceIdentifier path;
  33     private transient NormalizedNodeStreamVersion streamVersion;
  34
  35     protected AbstractReadPathTransactionRequestProxyV1() {
  36         // For Externalizable
  37     }
  38
  39     AbstractReadPathTransactionRequestProxyV1(final T request) {
  40         super(request);
  41         path = request.getPath();
  42         streamVersion = request.getVersion().getStreamVersion();
  43     }
  44
  45     @Override
  46     public final void writeExternal(final ObjectOutput out) throws IOException {
  47         super.writeExternal(out);
  48         try (NormalizedNodeDataOutput nnout = streamVersion.newDataOutput(out)) {
  49             nnout.writeYangInstanceIdentifier(path);
  50         }
  51     }
  52
  53     @Override
  54     public final void readExternal(final ObjectInput in) throws ClassNotFoundException, IOException {
  55         super.readExternal(in);
  56         path = NormalizedNodeDataInput.newDataInput(in).readYangInstanceIdentifier();
  57     }
  58
  59     @Override
  60     protected final T createReadRequest(final TransactionIdentifier target, final long sequence,
  61             final ActorRef replyTo, final boolean snapshotOnly) {
  62         return createReadPathRequest(target, sequence, replyTo, path, snapshotOnly);
  63     }
  64
  65     abstract T createReadPathRequest(TransactionIdentifier target, long sequence, ActorRef replyTo,
  66             YangInstanceIdentifier requestPath, boolean snapshotOnly);
  67 }