opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/persisted/FrontendHistoryMetadata.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.base.Verify;
  14 import com.google.common.collect.ImmutableMap;
  15 import com.google.common.primitives.UnsignedLong;
  16 import java.io.DataInput;
  17 import java.io.DataOutput;
  18 import java.io.IOException;
  19 import java.util.HashMap;
  20 import java.util.Map;
  21 import java.util.Map.Entry;
  22 import org.eclipse.jdt.annotation.NonNull;
  23 import org.opendaylight.controller.cluster.datastore.utils.ImmutableUnsignedLongSet;
  24 import org.opendaylight.yangtools.concepts.WritableObject;
  25 import org.opendaylight.yangtools.concepts.WritableObjects;
  26
  27 public final class FrontendHistoryMetadata implements WritableObject {
  28     private final @NonNull ImmutableUnsignedLongSet purgedTransactions;
  29     private final @NonNull ImmutableMap<UnsignedLong, Boolean> closedTransactions;
  30     private final long historyId;
  31     private final long cookie;
  32     private final boolean closed;
  33
  34     public FrontendHistoryMetadata(final long historyId, final long cookie, final boolean closed,
  35             final Map<UnsignedLong, Boolean> closedTransactions, final ImmutableUnsignedLongSet purgedTransactions) {
  36         this.historyId = historyId;
  37         this.cookie = cookie;
  38         this.closed = closed;
  39         this.closedTransactions = ImmutableMap.copyOf(closedTransactions);
  40         this.purgedTransactions = requireNonNull(purgedTransactions);
  41     }
  42
  43     public long getHistoryId() {
  44         return historyId;
  45     }
  46
  47     public long getCookie() {
  48         return cookie;
  49     }
  50
  51     public boolean isClosed() {
  52         return closed;
  53     }
  54
  55     public ImmutableMap<UnsignedLong, Boolean> getClosedTransactions() {
  56         return closedTransactions;
  57     }
  58
  59     public ImmutableUnsignedLongSet getPurgedTransactions() {
  60         return purgedTransactions;
  61     }
  62
  63     @Override
  64     public void writeTo(final DataOutput out) throws IOException {
  65         WritableObjects.writeLongs(out, historyId, cookie);
  66         out.writeBoolean(closed);
  67
  68         final int purgedSize = purgedTransactions.size();
  69         WritableObjects.writeLongs(out, closedTransactions.size(), purgedSize);
  70         for (Entry<UnsignedLong, Boolean> e : closedTransactions.entrySet()) {
  71             WritableObjects.writeLong(out, e.getKey().longValue());
  72             out.writeBoolean(e.getValue());
  73         }
  74         purgedTransactions.writeRangesTo(out, purgedSize);
  75     }
  76
  77     public static FrontendHistoryMetadata readFrom(final DataInput in) throws IOException {
  78         byte header = WritableObjects.readLongHeader(in);
  79         final long historyId = WritableObjects.readFirstLong(in, header);
  80         final long cookie = WritableObjects.readSecondLong(in, header);
  81         final boolean closed = in.readBoolean();
  82
  83         header = WritableObjects.readLongHeader(in);
  84         long ls = WritableObjects.readFirstLong(in, header);
  85         Verify.verify(ls >= 0 && ls <= Integer.MAX_VALUE);
  86         final int csize = (int) ls;
  87
  88         ls = WritableObjects.readSecondLong(in, header);
  89         Verify.verify(ls >= 0 && ls <= Integer.MAX_VALUE);
  90         final int psize = (int) ls;
  91
  92         final Map<UnsignedLong, Boolean> closedTransactions = new HashMap<>(csize);
  93         for (int i = 0; i < csize; ++i) {
  94             final UnsignedLong key = UnsignedLong.fromLongBits(WritableObjects.readLong(in));
  95             final Boolean value = in.readBoolean();
  96             closedTransactions.put(key, value);
  97         }
  98         final var purgedTransactions = ImmutableUnsignedLongSet.readFrom(in, psize);
  99
 100         return new FrontendHistoryMetadata(historyId, cookie, closed, closedTransactions, purgedTransactions);
 101     }
 102
 103     @Override
 104     public String toString() {
 105         return MoreObjects.toStringHelper(FrontendHistoryMetadata.class).add("historyId", historyId)
 106                 .add("cookie", cookie).add("closed", closed).add("closedTransactions", closedTransactions)
 107                 .add("purgedTransactions", purgedTransactions).toString();
 108     }
 109 }