opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/persisted/ST.java

   1 /*
   2  * Copyright (c) 2022 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.datastore.persisted;
   9
  10 import static com.google.common.base.Verify.verifyNotNull;
  11 import static java.util.Objects.requireNonNull;
  12
  13 import com.google.common.io.ByteStreams;
  14 import java.io.IOException;
  15 import org.opendaylight.controller.cluster.access.concepts.LocalHistoryIdentifier;
  16 import org.opendaylight.controller.cluster.datastore.persisted.AbstractIdentifiablePayload.SerialForm;
  17 import org.opendaylight.controller.cluster.datastore.utils.ImmutableUnsignedLongSet;
  18
  19 /**
  20  * Serialization proxy for {@link SkipTransactionsPayload}.
  21  */
  22 final class ST implements SerialForm {
  23     private static final long serialVersionUID = 1L;
  24
  25     private ImmutableUnsignedLongSet transactionIds;
  26     private LocalHistoryIdentifier identifier;
  27     private byte[] bytes;
  28
  29     @SuppressWarnings("checkstyle:RedundantModifier")
  30     public ST() {
  31         // For Externalizable
  32     }
  33
  34     ST(final byte[] bytes) {
  35         this.bytes = requireNonNull(bytes);
  36     }
  37
  38     @Override
  39     public byte[] bytes() {
  40         return bytes;
  41     }
  42
  43     @Override
  44     public void readExternal(final byte[] newBytes) throws IOException {
  45         bytes = requireNonNull(newBytes);
  46
  47         final var in = ByteStreams.newDataInput(newBytes);
  48         identifier = LocalHistoryIdentifier.readFrom(in);
  49         transactionIds = verifyNotNull(ImmutableUnsignedLongSet.readFrom(in));
  50     }
  51
  52     @Override
  53     public Object readResolve() {
  54         return new SkipTransactionsPayload(identifier, bytes, transactionIds);
  55     }
  56 }