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

   1 /*
   2  * Copyright (c) 2015 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;
   9
  10 import static org.junit.Assert.assertEquals;
  11 import static org.junit.Assert.assertFalse;
  12 import static org.junit.Assert.assertNotNull;
  13 import static org.junit.Assert.assertNull;
  14 import static org.junit.Assert.assertTrue;
  15
  16 import java.io.File;
  17 import java.io.FileOutputStream;
  18 import java.math.BigInteger;
  19 import java.util.Arrays;
  20 import java.util.Collections;
  21 import org.apache.commons.lang3.SerializationUtils;
  22 import org.junit.After;
  23 import org.junit.Test;
  24 import org.opendaylight.controller.cluster.datastore.persisted.DatastoreSnapshot;
  25 import org.opendaylight.controller.cluster.datastore.persisted.DatastoreSnapshotList;
  26 import org.opendaylight.controller.cluster.datastore.persisted.MetadataShardDataTreeSnapshot;
  27 import org.opendaylight.controller.cluster.datastore.persisted.ShardManagerSnapshot;
  28 import org.opendaylight.controller.cluster.datastore.persisted.ShardSnapshotState;
  29 import org.opendaylight.controller.cluster.raft.ReplicatedLogEntry;
  30 import org.opendaylight.controller.cluster.raft.persisted.Snapshot;
  31 import org.opendaylight.controller.md.cluster.datastore.model.CarsModel;
  32 import org.opendaylight.controller.md.cluster.datastore.model.PeopleModel;
  33 import org.opendaylight.controller.md.cluster.datastore.model.SchemaContextHelper;
  34 import org.opendaylight.controller.md.cluster.datastore.model.TestModel;
  35 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  36 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  37 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree;
  38 import org.opendaylight.yangtools.yang.data.api.schema.tree.TreeType;
  39 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
  40 import org.opendaylight.yangtools.yang.data.impl.schema.tree.InMemoryDataTreeFactory;
  41
  42
  43 /**
  44  * Unit tests for DatastoreSnapshotRestore.
  45  *
  46  * @author Thomas Pantelis
  47  */
  48 public class DatastoreSnapshotRestoreTest {
  49     String restoreDirectoryPath = "target/DatastoreSnapshotRestoreTest-" + System.nanoTime();
  50     File restoreDirectoryFile = new File(restoreDirectoryPath);
  51     File backupFile = new File(restoreDirectoryFile, "backup");
  52
  53     @After
  54     public void tearDown() {
  55         backupFile.delete();
  56         restoreDirectoryFile.delete();
  57     }
  58
  59     @Test
  60     public void test() throws Exception {
  61         assertTrue("Failed to mkdir " + restoreDirectoryPath, restoreDirectoryFile.mkdirs());
  62
  63         final DatastoreSnapshot configSnapshot = new DatastoreSnapshot("config",
  64                 newShardManagerSnapshot("config-one", "config-two"),
  65                 Arrays.asList(new DatastoreSnapshot.ShardSnapshot("config-one", newSnapshot(CarsModel.BASE_PATH,
  66                         CarsModel.newCarsNode(CarsModel.newCarsMapNode(CarsModel.newCarEntry("optima",
  67                             BigInteger.valueOf(20000L)),CarsModel.newCarEntry("sportage",
  68                                 BigInteger.valueOf(30000L)))))),
  69                         new DatastoreSnapshot.ShardSnapshot("config-two", newSnapshot(PeopleModel.BASE_PATH,
  70                             PeopleModel.emptyContainer()))));
  71
  72         DatastoreSnapshot operSnapshot = new DatastoreSnapshot("oper",
  73                 null, Arrays.asList(new DatastoreSnapshot.ShardSnapshot("oper-one", newSnapshot(TestModel.TEST_PATH,
  74                         ImmutableNodes.containerNode(TestModel.TEST_QNAME)))));
  75
  76         DatastoreSnapshotList snapshotList = new DatastoreSnapshotList(Arrays.asList(configSnapshot, operSnapshot));
  77
  78         try (FileOutputStream fos = new FileOutputStream(backupFile)) {
  79             SerializationUtils.serialize(snapshotList, fos);
  80         }
  81
  82         DatastoreSnapshotRestore instance = DatastoreSnapshotRestore.instance(restoreDirectoryPath);
  83
  84         assertDatastoreSnapshotEquals(configSnapshot, instance.getAndRemove("config"));
  85         assertDatastoreSnapshotEquals(operSnapshot, instance.getAndRemove("oper"));
  86
  87         assertNull("DatastoreSnapshot was not removed", instance.getAndRemove("config"));
  88
  89         assertFalse(backupFile + " was not deleted", backupFile.exists());
  90
  91         instance = DatastoreSnapshotRestore.instance(restoreDirectoryPath);
  92         assertNull("Expected null DatastoreSnapshot", instance.getAndRemove("config"));
  93         assertNull("Expected null DatastoreSnapshot", instance.getAndRemove("oper"));
  94     }
  95
  96     private static void assertDatastoreSnapshotEquals(DatastoreSnapshot expected, DatastoreSnapshot actual) {
  97         assertNotNull("DatastoreSnapshot is null", actual);
  98         assertEquals("getType", expected.getType(), actual.getType());
  99
 100         if (expected.getShardManagerSnapshot() == null) {
 101             assertNull("Expected null ShardManagerSnapshot", actual.getShardManagerSnapshot());
 102         } else {
 103             assertEquals("ShardManagerSnapshot", expected.getShardManagerSnapshot().getShardList(),
 104                     actual.getShardManagerSnapshot().getShardList());
 105         }
 106
 107         assertEquals("ShardSnapshots size", expected.getShardSnapshots().size(), actual.getShardSnapshots().size());
 108         for (int i = 0; i < expected.getShardSnapshots().size(); i++) {
 109             assertEquals("ShardSnapshot " + (i + 1) + " name", expected.getShardSnapshots().get(i).getName(),
 110                     actual.getShardSnapshots().get(i).getName());
 111             assertSnapshotEquals("ShardSnapshot " + (i + 1) + " snapshot",
 112                     expected.getShardSnapshots().get(i).getSnapshot(), actual.getShardSnapshots().get(i).getSnapshot());
 113         }
 114     }
 115
 116     private static void assertSnapshotEquals(String prefix, Snapshot expected, Snapshot actual) {
 117         assertEquals(prefix + " lastIndex", expected.getLastIndex(), actual.getLastIndex());
 118         assertEquals(prefix + " lastTerm", expected.getLastTerm(), actual.getLastTerm());
 119         assertEquals(prefix + " lastAppliedIndex", expected.getLastAppliedIndex(), actual.getLastAppliedIndex());
 120         assertEquals(prefix + " lastAppliedTerm", expected.getLastAppliedTerm(), actual.getLastAppliedTerm());
 121         assertEquals(prefix + " unAppliedEntries", expected.getUnAppliedEntries(), actual.getUnAppliedEntries());
 122         assertEquals(prefix + " electionTerm", expected.getElectionTerm(), actual.getElectionTerm());
 123         assertEquals(prefix + " electionVotedFor", expected.getElectionVotedFor(), actual.getElectionVotedFor());
 124         assertEquals(prefix + " Root node", ((ShardSnapshotState)expected.getState()).getSnapshot().getRootNode(),
 125                 ((ShardSnapshotState)actual.getState()).getSnapshot().getRootNode());
 126     }
 127
 128     private static ShardManagerSnapshot newShardManagerSnapshot(String... shards) {
 129         return new ShardManagerSnapshot(Arrays.asList(shards));
 130     }
 131
 132     private static Snapshot newSnapshot(YangInstanceIdentifier path, NormalizedNode<?, ?> node)
 133             throws Exception {
 134         DataTree dataTree = InMemoryDataTreeFactory.getInstance().create(TreeType.OPERATIONAL);
 135         dataTree.setSchemaContext(SchemaContextHelper.full());
 136         AbstractShardTest.writeToStore(dataTree, path, node);
 137         NormalizedNode<?, ?> root = AbstractShardTest.readStore(dataTree, YangInstanceIdentifier.EMPTY);
 138
 139         return Snapshot.create(new ShardSnapshotState(new MetadataShardDataTreeSnapshot(root)),
 140                 Collections.<ReplicatedLogEntry>emptyList(), 2, 1, 2, 1, 1, "member-1", null);
 141     }
 142 }