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TransactionLogsInSeparateLocationIT.java
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TransactionLogsInSeparateLocationIT.java
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/*
* Copyright (c) 2002-2017 "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 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.graphdb;
import org.junit.Rule;
import org.junit.Test;
import java.io.File;
import java.io.IOException;
import org.neo4j.graphdb.factory.GraphDatabaseSettings;
import org.neo4j.io.fs.FileSystemAbstraction;
import org.neo4j.kernel.impl.transaction.log.PhysicalLogVersionedStoreChannel;
import org.neo4j.kernel.impl.transaction.log.files.LogFiles;
import org.neo4j.kernel.impl.transaction.log.files.LogFilesBuilder;
import org.neo4j.test.TestGraphDatabaseFactory;
import org.neo4j.test.rule.TestDirectory;
import org.neo4j.test.rule.fs.DefaultFileSystemRule;
import org.neo4j.test.rule.fs.FileSystemRule;
import static org.hamcrest.Matchers.greaterThan;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
public class TransactionLogsInSeparateLocationIT
{
@Rule
public final TestDirectory testDirectory = TestDirectory.testDirectory();
@Rule
public final FileSystemRule fileSystemRule = new DefaultFileSystemRule();
@Test
public void databaseWithTransactionLogsInSeparateRelativeLocation() throws IOException
{
File storeDir = testDirectory.graphDbDir();
File txDirectory = new File( storeDir, "transaction-logs" );
performTransactions( txDirectory.getName(), storeDir );
verifyTransactionLogs( txDirectory, storeDir );
}
@Test
public void databaseWithTransactionLogsInSeparateAbsoluteLocation() throws IOException
{
File storeDir = testDirectory.graphDbDir();
File txDirectory = testDirectory.directory( "transaction-logs" );
performTransactions( txDirectory.getAbsolutePath(), storeDir );
verifyTransactionLogs( txDirectory, storeDir );
}
private void performTransactions( String txPath, File storeDir ) throws IOException
{
GraphDatabaseService database = new TestGraphDatabaseFactory().newEmbeddedDatabaseBuilder( storeDir )
.setConfig( GraphDatabaseSettings.logical_logs_location, txPath )
.newGraphDatabase();
for ( int i = 0; i < 10; i++ )
{
try ( Transaction transaction = database.beginTx() )
{
Node node = database.createNode();
node.setProperty( "a", "b" );
node.setProperty( "c", "d" );
transaction.success();
}
}
database.shutdown();
}
private void verifyTransactionLogs( File txDirectory, File storeDir ) throws IOException
{
FileSystemAbstraction fileSystem = fileSystemRule.get();
LogFiles storeDirLogs = LogFilesBuilder.logFilesBasedOnlyBuilder( storeDir, fileSystem ).build();
assertFalse( storeDirLogs.versionExists( 0 ) );
LogFiles txDirectoryLogs = LogFilesBuilder.logFilesBasedOnlyBuilder( txDirectory, fileSystem ).build();
assertTrue( txDirectoryLogs.versionExists( 0 ) );
try ( PhysicalLogVersionedStoreChannel physicalLogVersionedStoreChannel = txDirectoryLogs.openForVersion( 0 ) )
{
assertThat( physicalLogVersionedStoreChannel.size(), greaterThan( 0L ) );
}
}
}