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         final byte[] bytes = bos.toByteArray();
  51         assertEquals(242, bytes.length);
  52
  53         ShardDataTreeSnapshot deserialized;
  54         try (ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(bytes))) {
  55             deserialized = ShardDataTreeSnapshot.deserialize(in).getSnapshot();
  56         }
  57
  58         Optional<NormalizedNode<?, ?>> actualNode = deserialized.getRootNode();
  59         assertTrue("rootNode present", actualNode.isPresent());
  60         assertEquals("rootNode", expectedNode, actualNode.get());
  61         assertEquals("Deserialized type", MetadataShardDataTreeSnapshot.class, deserialized.getClass());
  62         assertEquals("Metadata size", 0, ((MetadataShardDataTreeSnapshot)deserialized).getMetadata().size());
  63     }
  64
  65     @Test
  66     public void testShardDataTreeSnapshotWithMetadata() throws Exception {
  67         NormalizedNode<?, ?> expectedNode = ImmutableContainerNodeBuilder.create()
  68                 .withNodeIdentifier(new YangInstanceIdentifier.NodeIdentifier(TestModel.TEST_QNAME))
  69                 .withChild(ImmutableNodes.leafNode(TestModel.DESC_QNAME, "foo")).build();
  70
  71         Map<Class<? extends ShardDataTreeSnapshotMetadata<?>>, ShardDataTreeSnapshotMetadata<?>> expMetadata =
  72                 ImmutableMap.of(TestShardDataTreeSnapshotMetadata.class, new TestShardDataTreeSnapshotMetadata("test"));
  73         MetadataShardDataTreeSnapshot snapshot = new MetadataShardDataTreeSnapshot(expectedNode, expMetadata);
  74         ByteArrayOutputStream bos = new ByteArrayOutputStream();
  75         try (ObjectOutputStream out = new ObjectOutputStream(bos)) {
  76             snapshot.serialize(out);
  77         }
  78
  79         final byte[] bytes = bos.toByteArray();
  80         assertEquals(390, bytes.length);
  81
  82         ShardDataTreeSnapshot deserialized;
  83         try (ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(bytes))) {
  84             deserialized = ShardDataTreeSnapshot.deserialize(in).getSnapshot();
  85         }
  86
  87         Optional<NormalizedNode<?, ?>> actualNode = deserialized.getRootNode();
  88         assertTrue("rootNode present", actualNode.isPresent());
  89         assertEquals("rootNode", expectedNode, actualNode.get());
  90         assertEquals("Deserialized type", MetadataShardDataTreeSnapshot.class, deserialized.getClass());
  91         assertEquals("Metadata", expMetadata, ((MetadataShardDataTreeSnapshot)deserialized).getMetadata());
  92     }
  93
  94     static class TestShardDataTreeSnapshotMetadata
  95             extends ShardDataTreeSnapshotMetadata<TestShardDataTreeSnapshotMetadata> {
  96         private static final long serialVersionUID = 1L;
  97
  98         private final String data;
  99
 100         TestShardDataTreeSnapshotMetadata(final String data) {
 101             this.data = data;
 102         }
 103
 104         @Override
 105         public Class<TestShardDataTreeSnapshotMetadata> getType() {
 106             return TestShardDataTreeSnapshotMetadata.class;
 107         }
 108
 109         @Override
 110         protected Externalizable externalizableProxy() {
 111             return new Proxy(data);
 112         }
 113
 114         @Override
 115         public int hashCode() {
 116             return data.hashCode();
 117         }
 118
 119         @Override
 120         public boolean equals(final Object obj) {
 121             return obj instanceof TestShardDataTreeSnapshotMetadata
 122                     && data.equals(((TestShardDataTreeSnapshotMetadata)obj).data);
 123         }
 124
 125         private static class Proxy implements Externalizable {
 126             private String data;
 127
 128             @SuppressWarnings("checkstyle:RedundantModifier")
 129             public Proxy() {
 130             }
 131
 132             Proxy(final String data) {
 133                 this.data = data;
 134             }
 135
 136             @Override
 137             public void writeExternal(final ObjectOutput out) throws IOException {
 138                 out.writeObject(data);
 139             }
 140
 141             @Override
 142             public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
 143                 data = (String) in.readObject();
 144             }
 145
 146             Object readResolve() {
 147                 return new TestShardDataTreeSnapshotMetadata(data);
 148             }
 149         }
 150     }
 151 }