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 com.google.common.collect.ImmutableMap;
  13 import java.io.ByteArrayInputStream;
  14 import java.io.ByteArrayOutputStream;
  15 import java.io.Externalizable;
  16 import java.io.IOException;
  17 import java.io.ObjectInput;
  18 import java.io.ObjectInputStream;
  19 import java.io.ObjectOutput;
  20 import java.io.ObjectOutputStream;
  21 import java.util.Map;
  22 import java.util.Optional;
  23 import org.junit.Test;
  24 import org.opendaylight.controller.md.cluster.datastore.model.TestModel;
  25 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  26 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  27 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
  28 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableContainerNodeBuilder;
  29
  30 /**
  31  * Unit tests for ShardDataTreeSnapshot.
  32  *
  33  * @author Thomas Pantelis
  34  */
  35 public class ShardDataTreeSnapshotTest {
  36
  37     @Test
  38     public void testShardDataTreeSnapshotWithNoMetadata() throws Exception {
  39         NormalizedNode<?, ?> expectedNode = ImmutableContainerNodeBuilder.create()
  40                 .withNodeIdentifier(new YangInstanceIdentifier.NodeIdentifier(TestModel.TEST_QNAME))
  41                 .withChild(ImmutableNodes.leafNode(TestModel.DESC_QNAME, "foo")).build();
  42
  43         MetadataShardDataTreeSnapshot snapshot = new MetadataShardDataTreeSnapshot(expectedNode);
  44         ByteArrayOutputStream bos = new ByteArrayOutputStream();
  45         try (ObjectOutputStream out = new ObjectOutputStream(bos)) {
  46             snapshot.serialize(out);
  47         }
  48
  49         ShardDataTreeSnapshot deserialized;
  50         try (ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(bos.toByteArray()))) {
  51             deserialized = ShardDataTreeSnapshot.deserialize(in);
  52         }
  53
  54         Optional<NormalizedNode<?, ?>> actualNode = deserialized.getRootNode();
  55         assertEquals("rootNode present", true, actualNode.isPresent());
  56         assertEquals("rootNode", expectedNode, actualNode.get());
  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         NormalizedNode<?, ?> expectedNode = ImmutableContainerNodeBuilder.create()
  64                 .withNodeIdentifier(new YangInstanceIdentifier.NodeIdentifier(TestModel.TEST_QNAME))
  65                 .withChild(ImmutableNodes.leafNode(TestModel.DESC_QNAME, "foo")).build();
  66
  67         Map<Class<? extends ShardDataTreeSnapshotMetadata<?>>, ShardDataTreeSnapshotMetadata<?>> expMetadata =
  68                 ImmutableMap.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         ShardDataTreeSnapshot deserialized;
  76         try (ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(bos.toByteArray()))) {
  77             deserialized = ShardDataTreeSnapshot.deserialize(in);
  78         }
  79
  80         Optional<NormalizedNode<?, ?>> actualNode = deserialized.getRootNode();
  81         assertEquals("rootNode present", true, actualNode.isPresent());
  82         assertEquals("rootNode", expectedNode, actualNode.get());
  83         assertEquals("Deserialized type", MetadataShardDataTreeSnapshot.class, deserialized.getClass());
  84         assertEquals("Metadata", expMetadata, ((MetadataShardDataTreeSnapshot)deserialized).getMetadata());
  85     }
  86
  87     static class TestShardDataTreeSnapshotMetadata
  88             extends ShardDataTreeSnapshotMetadata<TestShardDataTreeSnapshotMetadata> {
  89         private static final long serialVersionUID = 1L;
  90
  91         private final String data;
  92
  93         TestShardDataTreeSnapshotMetadata(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(Object obj) {
 114             return obj instanceof TestShardDataTreeSnapshotMetadata
 115                     && data.equals(((TestShardDataTreeSnapshotMetadata)obj).data);
 116         }
 117
 118         private static class Proxy implements Externalizable {
 119             private String data;
 120
 121             @SuppressWarnings("checkstyle:RedundantModifier")
 122             public Proxy() {
 123             }
 124
 125             Proxy(String data) {
 126                 this.data = data;
 127             }
 128
 129             @Override
 130             public void writeExternal(ObjectOutput out) throws IOException {
 131                 out.writeObject(data);
 132             }
 133
 134             @Override
 135             public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
 136                 data = (String) in.readObject();
 137             }
 138
 139             Object readResolve() {
 140                 return new TestShardDataTreeSnapshotMetadata(data);
 141             }
 142         }
 143     }
 144 }