opendaylight/md-sal/sal-distributed-datastore/src/test/java/org/opendaylight/controller/cluster/datastore/persisted/FrontendShardDataTreeSnapshotMetadataTest.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
   9 package org.opendaylight.controller.cluster.datastore.persisted;
  10
  11 import static org.junit.Assert.assertEquals;
  12 import static org.junit.Assert.assertFalse;
  13 import static org.junit.Assert.assertTrue;
  14
  15 import com.google.common.collect.Range;
  16 import com.google.common.collect.RangeSet;
  17 import com.google.common.collect.TreeRangeSet;
  18 import com.google.common.primitives.UnsignedLong;
  19 import java.io.ByteArrayInputStream;
  20 import java.io.ByteArrayOutputStream;
  21 import java.io.IOException;
  22 import java.io.ObjectInputStream;
  23 import java.io.ObjectOutputStream;
  24 import java.util.ArrayList;
  25 import java.util.Collection;
  26 import java.util.Collections;
  27 import java.util.HashMap;
  28 import java.util.List;
  29 import java.util.Map;
  30 import org.junit.Test;
  31 import org.opendaylight.controller.cluster.access.concepts.ClientIdentifier;
  32 import org.opendaylight.controller.cluster.access.concepts.FrontendIdentifier;
  33 import org.opendaylight.controller.cluster.access.concepts.FrontendType;
  34 import org.opendaylight.controller.cluster.access.concepts.MemberName;
  35
  36 public class FrontendShardDataTreeSnapshotMetadataTest {
  37
  38     @Test(expected = NullPointerException.class)
  39     public final void testCreateMetadataSnapshotNullInput() {
  40         new FrontendShardDataTreeSnapshotMetadata(null);
  41     }
  42
  43     @Test
  44     public final void testCreateMetadataSnapshotEmptyInput() throws Exception {
  45         final FrontendShardDataTreeSnapshotMetadata emptyOrigSnapshot = createEmptyMetadataSnapshot();
  46         final FrontendShardDataTreeSnapshotMetadata emptyCopySnapshot = copy(emptyOrigSnapshot);
  47         testMetadataSnapshotEqual(emptyOrigSnapshot, emptyCopySnapshot);
  48     }
  49
  50     @Test
  51     public final void testSerializeMetadataSnapshotWithOneClient() throws Exception {
  52         final FrontendShardDataTreeSnapshotMetadata origSnapshot = createMetadataSnapshot(1);
  53         final FrontendShardDataTreeSnapshotMetadata copySnapshot = copy(origSnapshot);
  54         testMetadataSnapshotEqual(origSnapshot, copySnapshot);
  55     }
  56
  57     @Test
  58     public final void testSerializeMetadataSnapshotWithMoreClients() throws Exception {
  59         final FrontendShardDataTreeSnapshotMetadata origSnapshot = createMetadataSnapshot(5);
  60         final FrontendShardDataTreeSnapshotMetadata copySnapshot = copy(origSnapshot);
  61         testMetadataSnapshotEqual(origSnapshot, copySnapshot);
  62     }
  63
  64     private static void testMetadataSnapshotEqual(final FrontendShardDataTreeSnapshotMetadata origSnapshot,
  65             final FrontendShardDataTreeSnapshotMetadata copySnapshot) {
  66
  67         final List<FrontendClientMetadata> origClientList = origSnapshot.getClients();
  68         final List<FrontendClientMetadata> copyClientList = copySnapshot.getClients();
  69
  70         assertTrue(origClientList.size() == copyClientList.size());
  71
  72         final Map<ClientIdentifier, FrontendClientMetadata> origIdent = new HashMap<>();
  73         final Map<ClientIdentifier, FrontendClientMetadata> copyIdent = new HashMap<>();
  74         origClientList.forEach(client -> origIdent.put(client.getIdentifier(), client));
  75         origClientList.forEach(client -> copyIdent.put(client.getIdentifier(), client));
  76
  77         assertTrue(origIdent.keySet().containsAll(copyIdent.keySet()));
  78         assertTrue(copyIdent.keySet().containsAll(origIdent.keySet()));
  79
  80         origIdent.values().forEach(client -> {
  81             final FrontendClientMetadata copyClient = copyIdent.get(client.getIdentifier());
  82             testObject(client.getIdentifier(), copyClient.getIdentifier());
  83             assertTrue(client.getPurgedHistories().equals(copyClient.getPurgedHistories()));
  84             assertTrue(client.getCurrentHistories().equals(copyClient.getCurrentHistories()));
  85         });
  86     }
  87
  88     private static FrontendShardDataTreeSnapshotMetadata createEmptyMetadataSnapshot() {
  89         return new FrontendShardDataTreeSnapshotMetadata(Collections.<FrontendClientMetadata>emptyList());
  90     }
  91
  92     private static FrontendShardDataTreeSnapshotMetadata createMetadataSnapshot(final int size) {
  93         final List<FrontendClientMetadata> clients = new ArrayList<>();
  94         for (long i = 0; i < size; i++) {
  95             clients.add(createFrontedClientMetadata(i));
  96         }
  97         return new FrontendShardDataTreeSnapshotMetadata(clients);
  98     }
  99
 100     private static FrontendClientMetadata createFrontedClientMetadata(final long num) {
 101         final String index = String.valueOf(num);
 102         final String indexName = "test_" + index;
 103         final FrontendIdentifier frontendIdentifier = FrontendIdentifier.create(MemberName.forName(indexName),
 104                 FrontendType.forName(index));
 105         final ClientIdentifier clientIdentifier = ClientIdentifier.create(frontendIdentifier, num);
 106
 107         final RangeSet<UnsignedLong> purgedHistories = TreeRangeSet.create();
 108         purgedHistories.add(Range.closed(UnsignedLong.ZERO, UnsignedLong.ONE));
 109
 110         final Collection<FrontendHistoryMetadata> currentHistories = Collections
 111                 .singleton(new FrontendHistoryMetadata(num, num, num, true));
 112
 113         return new FrontendClientMetadata(clientIdentifier, purgedHistories, currentHistories);
 114     }
 115
 116     private static <T> void testObject(final T object, final T equalObject) {
 117         assertEquals(object.hashCode(), equalObject.hashCode());
 118         assertTrue(object.equals(object));
 119         assertTrue(object.equals(equalObject));
 120         assertFalse(object.equals(null));
 121         assertFalse(object.equals("dummy"));
 122     }
 123
 124     @SuppressWarnings("unchecked")
 125     private static <T> T copy(final T obj) throws IOException, ClassNotFoundException {
 126         final ByteArrayOutputStream bos = new ByteArrayOutputStream();
 127         try (ObjectOutputStream oos = new ObjectOutputStream(bos)) {
 128             oos.writeObject(obj);
 129         }
 130
 131         try (ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(bos.toByteArray()))) {
 132             return (T) ois.readObject();
 133         }
 134     }
 135 }