/**
* Copyright (c) 2002-2010 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.onlinebackup;
import static org.junit.Assert.assertEquals;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.junit.Before;
import org.junit.Test;
import org.neo4j.graphdb.Node;
import org.neo4j.graphdb.Relationship;
import org.neo4j.graphdb.RelationshipType;
import org.neo4j.graphdb.Transaction;
import org.neo4j.index.IndexService;
import org.neo4j.index.lucene.LuceneFulltextIndexService;
import org.neo4j.index.lucene.LuceneIndexService;
import org.neo4j.kernel.EmbeddedGraphDatabase;
/**
* Backup Neo4j and a Lucene data source to another running Neo4j+Lucene,
* including a lucene fulltext data source.
*/
public class MultiLuceneRunningTest
{
private static enum MyRels implements RelationshipType
{
TEST
}
private static final String FILE_SEP = System
.getProperty( "file.separator" );
private static final String TARGET_DIR = "target";
private static final String VAR = TARGET_DIR + FILE_SEP + "var";
private static final String STORE_LOCATION_DIR = VAR + FILE_SEP + "neo-db";
private static final String BACKUP_LOCATION_DIR = VAR + FILE_SEP
+ "neo-backup";
private HashMap<String, String> config = null;
@Before
public void setup()
{
Util.deleteDir( new File( VAR ) );
System.out.println( "setting up database and backup-copy "
+ "including Lucene and lucene-fulltext" );
EmbeddedGraphDatabase graphDb = Util.startGraphDbInstance(
STORE_LOCATION_DIR, getConfiguration() );
IndexService index = new LuceneIndexService( graphDb );
LuceneFulltextIndexService fulltextIndex = new LuceneFulltextIndexService(
graphDb );
Transaction tx = graphDb.beginTx();
try
{
Node node = addNode( graphDb );
index.index( node, "number", 1 );
fulltextIndex.index( node, "text", "abc def" );
tx.success();
}
finally
{
tx.finish();
}
Util.stopGraphDb( graphDb, index, fulltextIndex );
Util.copyDir( STORE_LOCATION_DIR, BACKUP_LOCATION_DIR );
}
protected Map<String, String> getConfiguration()
{
if ( config != null )
{
return config;
}
config = new HashMap<String, String>();
config.put( "keep_logical_logs", "nioneodb,lucene,lucene-fulltext" );
return config;
}
@Test
public void backup() throws IOException
{
System.out.println( "starting tests" );
EmbeddedGraphDatabase graphDb = Util.startGraphDbInstance(
STORE_LOCATION_DIR, getConfiguration() );
IndexService indexService = new LuceneIndexService( graphDb );
LuceneFulltextIndexService fulltextIndex = new LuceneFulltextIndexService(
graphDb );
System.out.println( "backing up original db without any changes" );
tryBackup( graphDb, BACKUP_LOCATION_DIR, 1 );
Transaction tx = graphDb.beginTx();
try
{
indexService.index( addNode( graphDb ), "number", 2 );
tx.success();
}
finally
{
tx.finish();
}
System.out.println( "one node added" );
tryBackup( graphDb, BACKUP_LOCATION_DIR, 2 );
tx = graphDb.beginTx();
try
{
indexService.index( addNode( graphDb ), "number", 3 );
tx.success();
}
finally
{
tx.finish();
}
System.out.println( "one node added" );
tx = graphDb.beginTx();
try
{
indexService.index( addNode( graphDb ), "number", 4 );
System.out.println( "one node added, not commited" );
tryBackup( graphDb, BACKUP_LOCATION_DIR, 3 );
tx.success();
}
finally
{
tx.finish();
}
System.out.println( "previous add commited" );
tryBackup( graphDb, BACKUP_LOCATION_DIR, 4 );
Util.stopGraphDb( graphDb, indexService, fulltextIndex );
}
protected void tryBackup( EmbeddedGraphDatabase graphDb, String location, int relCount )
throws IOException
{
setupBackup( graphDb, location );
EmbeddedGraphDatabase bDb = Util.startGraphDbInstance( location );
IndexService bIndexService = new LuceneIndexService( bDb );
LuceneFulltextIndexService bFulltextIndex = new LuceneFulltextIndexService(
bDb );
Transaction bTx = bDb.beginTx();
try
{
List<Relationship> rels = new ArrayList<Relationship>();
for ( Relationship rel : bDb.getReferenceNode().getRelationships() )
{
rels.add( rel );
}
assertEquals( relCount, rels.size() );
Node node = bIndexService.getSingleNode( "number", relCount );
assertEquals( true, node != null );
assertEquals( node.getId(), (long) (Long) node.getProperty(
"theId", -1L ) );
node = bFulltextIndex.getSingleNode( "text", "abc" );
assertEquals( true, node != null );
bTx.success();
}
finally
{
bTx.finish();
}
Util.stopGraphDb( bDb, bIndexService, bFulltextIndex );
}
protected void setupBackup( EmbeddedGraphDatabase graphDb, String location )
throws IOException
{
EmbeddedGraphDatabase bDb = Util.startGraphDbInstance( location );
IndexService bIndexService = new LuceneIndexService( bDb );
LuceneFulltextIndexService bFulltextIndex = new LuceneFulltextIndexService(
bDb );
Backup backupComp = Neo4jBackup.allDataSources( graphDb, bDb );
backupComp.enableFileLogger();
backupComp.doBackup();
Util.stopGraphDb( bDb, bIndexService, bFulltextIndex );
}
private Node addNode( EmbeddedGraphDatabase graphDb )
{
Node referenceNode = graphDb.getReferenceNode();
Node node = graphDb.createNode();
node.setProperty( "theId", node.getId() );
referenceNode.createRelationshipTo( node, MyRels.TEST );
return node;
}
}