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