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