/**
* Copyright (c) 2002-2011 "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.kernel.impl.core;
import static org.junit.Assert.assertEquals;
import static org.neo4j.kernel.impl.AbstractNeo4jTestCase.getStorePath;
import java.io.File;
import java.util.concurrent.atomic.AtomicInteger;
import org.junit.Before;
import org.junit.Test;
import org.neo4j.graphdb.event.ErrorState;
import org.neo4j.graphdb.event.KernelEventHandler;
import org.neo4j.kernel.EmbeddedGraphDatabase;
import org.neo4j.kernel.impl.AbstractNeo4jTestCase;
public class TestShutdownSequence
{
private EmbeddedGraphDatabase graphDb;
public @Before
void createGraphDb()
{
graphDb = new EmbeddedGraphDatabase( getStorePath( "shutdown" ) );
}
public @Test
void canInvokeShutdownMultipleTimes()
{
graphDb.shutdown();
graphDb.shutdown();
}
public @Test
void eventHandlersAreOnlyInvokedOnceDuringShutdown()
{
final AtomicInteger counter = new AtomicInteger();
graphDb.registerKernelEventHandler( new KernelEventHandler()
{
public void beforeShutdown()
{
counter.incrementAndGet();
}
public Object getResource()
{
return null;
}
public void kernelPanic( ErrorState error )
{
// do nothing
}
public ExecutionOrder orderComparedTo( KernelEventHandler other )
{
return ExecutionOrder.DOESNT_MATTER;
}
} );
graphDb.shutdown();
graphDb.shutdown();
assertEquals( 1, counter.get() );
}
public @Test
void canRemoveFilesAndReinvokeShutdown()
{
graphDb.shutdown();
AbstractNeo4jTestCase.deleteFileOrDirectory( new File(
getStorePath( "shutdown" ) ) );
graphDb.shutdown();
}
public @Test
void canInvokeShutdownFromShutdownHandler()
{
graphDb.registerKernelEventHandler( new KernelEventHandler()
{
public void beforeShutdown()
{
graphDb.shutdown();
}
public Object getResource()
{
return null;
}
public void kernelPanic( ErrorState error )
{
// do nothing
}
public ExecutionOrder orderComparedTo( KernelEventHandler other )
{
return ExecutionOrder.DOESNT_MATTER;
}
} );
graphDb.shutdown();
}
}