opendaylight/md-sal/cds-access-api/src/main/java/org/opendaylight/controller/cluster/access/commands/SkipTransactionsRequestV1.java

   1 /*
   2  * Copyright (c) 2021 PANTHEON.tech, 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 com.google.common.collect.ImmutableList;
  12 import com.google.common.primitives.UnsignedLong;
  13 import java.io.IOException;
  14 import java.io.ObjectInput;
  15 import java.io.ObjectOutput;
  16 import java.util.List;
  17 import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
  18 import org.opendaylight.yangtools.concepts.WritableObjects;
  19
  20 /**
  21  * Externalizable proxy for use with {@link SkipTransactionsRequest}. It implements the initial
  22  * (Phosphorus SR1) serialization format.
  23  */
  24 final class SkipTransactionsRequestV1 extends AbstractTransactionRequestProxy<SkipTransactionsRequest> {
  25     private List<UnsignedLong> others;
  26
  27     // checkstyle flags the public modifier as redundant however it is explicitly needed for Java serialization to
  28     // be able to create instances via reflection.
  29     @SuppressWarnings("checkstyle:RedundantModifier")
  30     public SkipTransactionsRequestV1() {
  31         // For Externalizable
  32     }
  33
  34     SkipTransactionsRequestV1(final SkipTransactionsRequest request) {
  35         super(request);
  36         others = request.getOthers();
  37     }
  38
  39     @Override
  40     public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
  41         super.readExternal(in);
  42
  43         final int size = in.readInt();
  44         final var builder = ImmutableList.<UnsignedLong>builderWithExpectedSize(size);
  45         int idx;
  46         if (size % 2 != 0) {
  47             builder.add(UnsignedLong.fromLongBits(WritableObjects.readLong(in)));
  48             idx = 1;
  49         } else {
  50             idx = 0;
  51         }
  52         for (; idx < size; idx += 2) {
  53             final byte hdr = WritableObjects.readLongHeader(in);
  54             builder.add(UnsignedLong.fromLongBits(WritableObjects.readFirstLong(in, hdr)));
  55             builder.add(UnsignedLong.fromLongBits(WritableObjects.readSecondLong(in, hdr)));
  56         }
  57         others = builder.build();
  58     }
  59
  60     @Override
  61     public void writeExternal(final ObjectOutput out) throws IOException {
  62         super.writeExternal(out);
  63
  64         final int size = others.size();
  65         out.writeInt(size);
  66
  67         int idx;
  68         if (size % 2 != 0) {
  69             WritableObjects.writeLong(out, others.get(0).longValue());
  70             idx = 1;
  71         } else {
  72             idx = 0;
  73         }
  74         for (; idx < size; idx += 2) {
  75             WritableObjects.writeLongs(out, others.get(idx).longValue(), others.get(idx + 1).longValue());
  76         }
  77     }
  78
  79     @Override
  80     protected SkipTransactionsRequest createRequest(final TransactionIdentifier target, final long sequence,
  81             final ActorRef replyToActor) {
  82         return new SkipTransactionsRequest(target, sequence, replyToActor, others);
  83     }
  84 }