opendaylight/md-sal/sal-distributed-datastore/src/test/java/org/opendaylight/controller/cluster/datastore/persisted/ShardDataTreeSnapshotTest.java

   1 /*
   2  * Copyright (c) 2016, 2017 Brocade Communications 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 org.junit.Assert.assertEquals;
  11
  12 import java.io.ByteArrayInputStream;
  13 import java.io.ByteArrayOutputStream;
  14 import java.io.Externalizable;
  15 import java.io.IOException;
  16 import java.io.ObjectInput;
  17 import java.io.ObjectInputStream;
  18 import java.io.ObjectOutput;
  19 import java.io.ObjectOutputStream;
  20 import java.util.Map;
  21 import java.util.Optional;
  22 import org.junit.Test;
  23 import org.opendaylight.controller.md.cluster.datastore.model.TestModel;
  24 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  25 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  26 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
  27 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
  28
  29 /**
  30  * Unit tests for ShardDataTreeSnapshot.
  31  *
  32  * @author Thomas Pantelis
  33  */
  34 public class ShardDataTreeSnapshotTest {
  35
  36     @Test
  37     public void testShardDataTreeSnapshotWithNoMetadata() throws Exception {
  38         ContainerNode expectedNode = Builders.containerBuilder()
  39                 .withNodeIdentifier(new NodeIdentifier(TestModel.TEST_QNAME))
  40                 .withChild(ImmutableNodes.leafNode(TestModel.DESC_QNAME, "foo")).build();
  41
  42         MetadataShardDataTreeSnapshot snapshot = new MetadataShardDataTreeSnapshot(expectedNode);
  43         ByteArrayOutputStream bos = new ByteArrayOutputStream();
  44         try (ObjectOutputStream out = new ObjectOutputStream(bos)) {
  45             snapshot.serialize(out);
  46         }
  47
  48         final byte[] bytes = bos.toByteArray();
  49         assertEquals(202, bytes.length);
  50
  51         ShardDataTreeSnapshot deserialized;
  52         try (ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(bytes))) {
  53             deserialized = ShardDataTreeSnapshot.deserialize(in).getSnapshot();
  54         }
  55
  56         assertEquals("rootNode", Optional.of(expectedNode), deserialized.getRootNode());
  57         assertEquals("Deserialized type", MetadataShardDataTreeSnapshot.class, deserialized.getClass());
  58         assertEquals("Metadata size", 0, ((MetadataShardDataTreeSnapshot)deserialized).getMetadata().size());
  59     }
  60
  61     @Test
  62     public void testShardDataTreeSnapshotWithMetadata() throws Exception {
  63         ContainerNode expectedNode = Builders.containerBuilder()
  64                 .withNodeIdentifier(new NodeIdentifier(TestModel.TEST_QNAME))
  65                 .withChild(ImmutableNodes.leafNode(TestModel.DESC_QNAME, "foo")).build();
  66
  67         Map<Class<? extends ShardDataTreeSnapshotMetadata<?>>, ShardDataTreeSnapshotMetadata<?>> expMetadata =
  68                 Map.of(TestShardDataTreeSnapshotMetadata.class, new TestShardDataTreeSnapshotMetadata("test"));
  69         MetadataShardDataTreeSnapshot snapshot = new MetadataShardDataTreeSnapshot(expectedNode, expMetadata);
  70         ByteArrayOutputStream bos = new ByteArrayOutputStream();
  71         try (ObjectOutputStream out = new ObjectOutputStream(bos)) {
  72             snapshot.serialize(out);
  73         }
  74
  75         final byte[] bytes = bos.toByteArray();
  76         assertEquals(350, bytes.length);
  77
  78         ShardDataTreeSnapshot deserialized;
  79         try (ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(bytes))) {
  80             deserialized = ShardDataTreeSnapshot.deserialize(in).getSnapshot();
  81         }
  82
  83         assertEquals("rootNode", Optional.of(expectedNode), deserialized.getRootNode());
  84         assertEquals("Deserialized type", MetadataShardDataTreeSnapshot.class, deserialized.getClass());
  85         assertEquals("Metadata", expMetadata, ((MetadataShardDataTreeSnapshot)deserialized).getMetadata());
  86     }
  87
  88     static class TestShardDataTreeSnapshotMetadata
  89             extends ShardDataTreeSnapshotMetadata<TestShardDataTreeSnapshotMetadata> {
  90         @java.io.Serial
  91         private static final long serialVersionUID = 1L;
  92
  93         private final String data;
  94
  95         TestShardDataTreeSnapshotMetadata(final String data) {
  96             this.data = data;
  97         }
  98
  99         @Override
 100         public Class<TestShardDataTreeSnapshotMetadata> getType() {
 101             return TestShardDataTreeSnapshotMetadata.class;
 102         }
 103
 104         @Override
 105         protected Externalizable externalizableProxy() {
 106             return new Proxy(data);
 107         }
 108
 109         @Override
 110         public int hashCode() {
 111             return data.hashCode();
 112         }
 113
 114         @Override
 115         public boolean equals(final Object obj) {
 116             return obj instanceof TestShardDataTreeSnapshotMetadata other && data.equals(other.data);
 117         }
 118
 119         private static class Proxy implements Externalizable {
 120             @java.io.Serial
 121             private static final long serialVersionUID = 7534948936595056176L;
 122
 123             private String data;
 124
 125             @SuppressWarnings("checkstyle:RedundantModifier")
 126             public Proxy() {
 127             }
 128
 129             Proxy(final String data) {
 130                 this.data = data;
 131             }
 132
 133             @Override
 134             public void writeExternal(final ObjectOutput out) throws IOException {
 135                 out.writeObject(data);
 136             }
 137
 138             @Override
 139             public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
 140                 data = (String) in.readObject();
 141             }
 142
 143             Object readResolve() {
 144                 return new TestShardDataTreeSnapshotMetadata(data);
 145             }
 146         }
 147     }
 148 }