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KernelTransactionTimeoutMonitorTest.java
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KernelTransactionTimeoutMonitorTest.java
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/*
* Copyright (c) 2002-2018 "Neo4j,"
* Neo4j Sweden AB [http://neo4j.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.kernel.impl.api;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import java.util.HashSet;
import java.util.concurrent.TimeUnit;
import org.neo4j.kernel.api.KernelTransactionHandle;
import org.neo4j.kernel.api.exceptions.Status;
import org.neo4j.kernel.impl.api.transaciton.monitor.KernelTransactionMonitor;
import org.neo4j.logging.AssertableLogProvider;
import org.neo4j.logging.internal.LogService;
import org.neo4j.logging.internal.SimpleLogService;
import org.neo4j.time.Clocks;
import org.neo4j.time.FakeClock;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
class KernelTransactionTimeoutMonitorTest
{
private static final int EXPECTED_REUSE_COUNT = 2;
private KernelTransactions kernelTransactions;
private FakeClock fakeClock;
private AssertableLogProvider logProvider;
private LogService logService;
@BeforeEach
void setUp()
{
kernelTransactions = mock( KernelTransactions.class );
fakeClock = Clocks.fakeClock();
logProvider = new AssertableLogProvider();
logService = new SimpleLogService( logProvider, logProvider );
}
@Test
void terminateExpiredTransactions()
{
HashSet<KernelTransactionHandle> transactions = new HashSet<>();
KernelTransactionImplementation tx1 = prepareTxMock( 3, 1, 3 );
KernelTransactionImplementation tx2 = prepareTxMock( 4, 1, 8 );
KernelTransactionImplementationHandle handle1 = new KernelTransactionImplementationHandle( tx1, fakeClock );
KernelTransactionImplementationHandle handle2 = new KernelTransactionImplementationHandle( tx2, fakeClock );
transactions.add( handle1 );
transactions.add( handle2 );
when( kernelTransactions.activeTransactions()).thenReturn( transactions );
KernelTransactionMonitor transactionMonitor = buildTransactionMonitor();
fakeClock.forward( 3, TimeUnit.MILLISECONDS );
transactionMonitor.run();
verify( tx1, never() ).markForTermination( Status.Transaction.TransactionTimedOut );
verify( tx2, never() ).markForTermination( Status.Transaction.TransactionTimedOut );
logProvider.assertNoMessagesContaining( "timeout" );
fakeClock.forward( 2, TimeUnit.MILLISECONDS );
transactionMonitor.run();
verify( tx1 ).markForTermination( EXPECTED_REUSE_COUNT, Status.Transaction.TransactionTimedOut );
verify( tx2, never() ).markForTermination( Status.Transaction.TransactionTimedOut );
logProvider.assertContainsLogCallContaining( "timeout" );
logProvider.clear();
fakeClock.forward( 10, TimeUnit.MILLISECONDS );
transactionMonitor.run();
verify( tx2 ).markForTermination( EXPECTED_REUSE_COUNT, Status.Transaction.TransactionTimedOut );
logProvider.assertContainsLogCallContaining( "timeout" );
}
@Test
void skipTransactionWithoutTimeout()
{
HashSet<KernelTransactionHandle> transactions = new HashSet<>();
KernelTransactionImplementation tx1 = prepareTxMock( 7, 3, 0 );
KernelTransactionImplementation tx2 = prepareTxMock( 8, 4, 0 );
KernelTransactionImplementationHandle handle1 = new KernelTransactionImplementationHandle( tx1, fakeClock );
KernelTransactionImplementationHandle handle2 = new KernelTransactionImplementationHandle( tx2, fakeClock );
transactions.add( handle1 );
transactions.add( handle2 );
when( kernelTransactions.activeTransactions()).thenReturn( transactions );
KernelTransactionMonitor transactionMonitor = buildTransactionMonitor();
fakeClock.forward( 300, TimeUnit.MILLISECONDS );
transactionMonitor.run();
verify( tx1, never() ).markForTermination( Status.Transaction.TransactionTimedOut );
verify( tx2, never() ).markForTermination( Status.Transaction.TransactionTimedOut );
logProvider.assertNoMessagesContaining( "timeout" );
}
private KernelTransactionMonitor buildTransactionMonitor()
{
return new KernelTransactionMonitor( kernelTransactions, fakeClock, logService );
}
private static KernelTransactionImplementation prepareTxMock( long userTxId, long startMillis, long timeoutMillis )
{
KernelTransactionImplementation transaction = mock( KernelTransactionImplementation.class );
when( transaction.startTime() ).thenReturn( startMillis );
when( transaction.userTransactionId() ).thenReturn( userTxId );
when( transaction.getReuseCount() ).thenReturn( EXPECTED_REUSE_COUNT );
when( transaction.timeout() ).thenReturn( timeoutMillis );
when( transaction.markForTermination( EXPECTED_REUSE_COUNT, Status.Transaction.TransactionTimedOut ) ).thenReturn( true );
return transaction;
}
}