opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/persisted/FrontendClientMetadata.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.datastore.persisted;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.base.MoreObjects;
  13 import com.google.common.collect.ImmutableList;
  14 import java.io.DataInput;
  15 import java.io.DataOutput;
  16 import java.io.IOException;
  17 import java.util.Collection;
  18 import org.eclipse.jdt.annotation.NonNull;
  19 import org.opendaylight.controller.cluster.access.concepts.ClientIdentifier;
  20 import org.opendaylight.controller.cluster.datastore.utils.ImmutableUnsignedLongSet;
  21 import org.opendaylight.yangtools.concepts.Identifiable;
  22 import org.opendaylight.yangtools.concepts.WritableObject;
  23
  24 public final class FrontendClientMetadata implements Identifiable<ClientIdentifier>, WritableObject {
  25     private final @NonNull ImmutableList<FrontendHistoryMetadata> currentHistories;
  26     private final @NonNull ImmutableUnsignedLongSet purgedHistories;
  27     private final @NonNull ClientIdentifier identifier;
  28
  29     public FrontendClientMetadata(final ClientIdentifier identifier, final ImmutableUnsignedLongSet purgedHistories,
  30             final Collection<FrontendHistoryMetadata> currentHistories) {
  31         this.identifier = requireNonNull(identifier);
  32         this.purgedHistories = requireNonNull(purgedHistories);
  33         this.currentHistories = ImmutableList.copyOf(currentHistories);
  34     }
  35
  36     public Collection<FrontendHistoryMetadata> getCurrentHistories() {
  37         return currentHistories;
  38     }
  39
  40     public ImmutableUnsignedLongSet getPurgedHistories() {
  41         return purgedHistories;
  42     }
  43
  44     @Override
  45     public ClientIdentifier getIdentifier() {
  46         return identifier;
  47     }
  48
  49     @Override
  50     public void writeTo(final DataOutput out) throws IOException {
  51         identifier.writeTo(out);
  52         purgedHistories.writeTo(out);
  53
  54         out.writeInt(currentHistories.size());
  55         for (final FrontendHistoryMetadata h : currentHistories) {
  56             h.writeTo(out);
  57         }
  58     }
  59
  60     public static FrontendClientMetadata readFrom(final DataInput in) throws IOException {
  61         final ClientIdentifier id = ClientIdentifier.readFrom(in);
  62         final var purgedHistories = ImmutableUnsignedLongSet.readFrom(in);
  63
  64         final int currentSize = in.readInt();
  65         final var currentBuilder = ImmutableList.<FrontendHistoryMetadata>builderWithExpectedSize(currentSize);
  66         for (int i = 0; i < currentSize; ++i) {
  67             currentBuilder.add(FrontendHistoryMetadata.readFrom(in));
  68         }
  69
  70         return new FrontendClientMetadata(id, purgedHistories, currentBuilder.build());
  71     }
  72
  73     @Override
  74     public String toString() {
  75         return MoreObjects.toStringHelper(FrontendClientMetadata.class).add("identifer", identifier)
  76                 .add("current", currentHistories).add("purged", purgedHistories).toString();
  77     }
  78 }