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ConcurrentTransactionAccessTest.java
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ConcurrentTransactionAccessTest.java
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/*
* Copyright (c) 2002-2018 "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.server.rest.transactional;
import org.junit.Test;
import java.net.URI;
import java.time.Clock;
import javax.servlet.http.HttpServletRequest;
import org.neo4j.internal.kernel.api.security.LoginContext;
import org.neo4j.kernel.GraphDatabaseQueryService;
import org.neo4j.kernel.api.KernelTransaction;
import org.neo4j.logging.NullLogProvider;
import org.neo4j.server.rest.transactional.error.InvalidConcurrentTransactionAccess;
import org.neo4j.server.rest.web.TransactionUriScheme;
import org.neo4j.test.DoubleLatch;
import static java.lang.Long.parseLong;
import static org.junit.Assert.fail;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyLong;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
public class ConcurrentTransactionAccessTest
{
@Test
public void shouldThrowSpecificExceptionOnConcurrentTransactionAccess() throws Exception
{
// given
TransactionRegistry registry =
new TransactionHandleRegistry( mock( Clock.class), 0, NullLogProvider.getInstance() );
TransitionalPeriodTransactionMessContainer kernel = mock( TransitionalPeriodTransactionMessContainer.class );
GraphDatabaseQueryService queryService = mock( GraphDatabaseQueryService.class );
TransitionalTxManagementKernelTransaction kernelTransaction = mock( TransitionalTxManagementKernelTransaction.class );
when(kernel.newTransaction( any( KernelTransaction.Type.class ), any( LoginContext.class ), anyLong() ) ).thenReturn( kernelTransaction );
TransactionFacade actions = new TransactionFacade( kernel, null, queryService, registry, NullLogProvider.getInstance() );
final TransactionHandle transactionHandle =
actions.newTransactionHandle( new DisgustingUriScheme(), true, LoginContext.AUTH_DISABLED, -1 );
final DoubleLatch latch = new DoubleLatch();
final StatementDeserializer statements = mock( StatementDeserializer.class );
when( statements.hasNext() ).thenAnswer( invocation ->
{
latch.startAndWaitForAllToStartAndFinish();
return false;
} );
new Thread( () ->
{
// start and block until finish
transactionHandle.execute( statements, mock( ExecutionResultSerializer.class ), mock(
HttpServletRequest.class ) );
} ).start();
latch.waitForAllToStart();
try
{
// when
actions.findTransactionHandle( DisgustingUriScheme.parseTxId( transactionHandle.uri() ) );
fail( "should have thrown exception" );
}
catch ( InvalidConcurrentTransactionAccess neo4jError )
{
// then we get here
}
finally
{
latch.finish();
}
}
private static class DisgustingUriScheme implements TransactionUriScheme
{
private static long parseTxId( URI txUri )
{
return parseLong( txUri.toString() );
}
@Override
public URI txUri( long id )
{
return URI.create( String.valueOf( id ) );
}
@Override
public URI txCommitUri( long id )
{
return txUri( id );
}
}
}