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 com.google.common.base.MoreObjects;
  11 import com.google.common.base.Verify;
  12 import com.google.common.collect.ImmutableMap;
  13 import com.google.common.collect.ImmutableRangeSet;
  14 import com.google.common.collect.Range;
  15 import com.google.common.collect.RangeSet;
  16 import com.google.common.collect.TreeRangeSet;
  17 import com.google.common.primitives.UnsignedLong;
  18 import java.io.DataInput;
  19 import java.io.DataOutput;
  20 import java.io.IOException;
  21 import java.util.HashMap;
  22 import java.util.Map;
  23 import java.util.Map.Entry;
  24 import java.util.Set;
  25 import org.opendaylight.yangtools.concepts.WritableObject;
  26 import org.opendaylight.yangtools.concepts.WritableObjects;
  27
  28 public final class FrontendHistoryMetadata implements WritableObject {
  29     private final RangeSet<UnsignedLong> purgedTransactions;
  30     private final Map<UnsignedLong, Boolean> closedTransactions;
  31     private final long historyId;
  32     private final long cookie;
  33     private final boolean closed;
  34
  35     public FrontendHistoryMetadata(final long historyId, final long cookie, final boolean closed,
  36             final Map<UnsignedLong, Boolean> closedTransactions, final RangeSet<UnsignedLong> purgedTransactions) {
  37         this.historyId = historyId;
  38         this.cookie = cookie;
  39         this.closed = closed;
  40         this.closedTransactions = ImmutableMap.copyOf(closedTransactions);
  41         this.purgedTransactions = ImmutableRangeSet.copyOf(purgedTransactions);
  42     }
  43
  44     public long getHistoryId() {
  45         return historyId;
  46     }
  47
  48     public long getCookie() {
  49         return cookie;
  50     }
  51
  52     public boolean isClosed() {
  53         return closed;
  54     }
  55
  56     public Map<UnsignedLong, Boolean> getClosedTransactions() {
  57         return closedTransactions;
  58     }
  59
  60     public RangeSet<UnsignedLong> getPurgedTransactions() {
  61         return purgedTransactions;
  62     }
  63
  64     @Override
  65     public void writeTo(final DataOutput out) throws IOException {
  66         WritableObjects.writeLongs(out, historyId, cookie);
  67         out.writeBoolean(closed);
  68
  69         final Set<Range<UnsignedLong>> purgedRanges = purgedTransactions.asRanges();
  70         WritableObjects.writeLongs(out, closedTransactions.size(), purgedRanges.size());
  71         for (Entry<UnsignedLong, Boolean> e : closedTransactions.entrySet()) {
  72             WritableObjects.writeLong(out, e.getKey().longValue());
  73             out.writeBoolean(e.getValue().booleanValue());
  74         }
  75         for (Range<UnsignedLong> r : purgedRanges) {
  76             WritableObjects.writeLongs(out, r.lowerEndpoint().longValue(), r.upperEndpoint().longValue());
  77         }
  78     }
  79
  80     public static FrontendHistoryMetadata readFrom(final DataInput in) throws IOException {
  81         byte header = WritableObjects.readLongHeader(in);
  82         final long historyId = WritableObjects.readFirstLong(in, header);
  83         final long cookie = WritableObjects.readSecondLong(in, header);
  84         final boolean closed = in.readBoolean();
  85
  86         header = WritableObjects.readLongHeader(in);
  87         long ls = WritableObjects.readFirstLong(in, header);
  88         Verify.verify(ls >= 0 && ls <= Integer.MAX_VALUE);
  89         final int csize = (int) ls;
  90
  91         ls = WritableObjects.readSecondLong(in, header);
  92         Verify.verify(ls >= 0 && ls <= Integer.MAX_VALUE);
  93         final int psize = (int) ls;
  94
  95         final Map<UnsignedLong, Boolean> closedTransactions = new HashMap<>(csize);
  96         for (int i = 0; i < csize; ++i) {
  97             final UnsignedLong key = UnsignedLong.fromLongBits(WritableObjects.readLong(in));
  98             final Boolean value = Boolean.valueOf(in.readBoolean());
  99             closedTransactions.put(key, value);
 100         }
 101         final RangeSet<UnsignedLong> purgedTransactions = TreeRangeSet.create();
 102         for (int i = 0; i < psize; ++i) {
 103             final byte h = WritableObjects.readLongHeader(in);
 104             final UnsignedLong l = UnsignedLong.fromLongBits(WritableObjects.readFirstLong(in, h));
 105             final UnsignedLong u = UnsignedLong.fromLongBits(WritableObjects.readSecondLong(in, h));
 106             purgedTransactions.add(Range.closed(l, u));
 107         }
 108
 109         return new FrontendHistoryMetadata(historyId, cookie, closed, closedTransactions, purgedTransactions);
 110     }
 111
 112     @Override
 113     public String toString() {
 114         return MoreObjects.toStringHelper(FrontendHistoryMetadata.class).add("historyId", historyId)
 115                 .add("cookie", cookie).add("closed", closed).add("closedTransactions", closedTransactions)
 116                 .add("purgedTransactions", purgedTransactions).toString();
 117     }
 118 }