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RemoteStoreTest.java
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RemoteStoreTest.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 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.causalclustering.catchup.storecopy;
import org.junit.Test;
import java.io.File;
import java.io.IOException;
import java.util.UUID;
import org.neo4j.causalclustering.catchup.TxPullRequestResult;
import org.neo4j.causalclustering.catchup.tx.TransactionLogCatchUpFactory;
import org.neo4j.causalclustering.catchup.tx.TransactionLogCatchUpWriter;
import org.neo4j.causalclustering.catchup.tx.TxPullClient;
import org.neo4j.causalclustering.catchup.tx.TxPullResponseListener;
import org.neo4j.causalclustering.identity.MemberId;
import org.neo4j.causalclustering.identity.StoreId;
import org.neo4j.io.fs.FileSystemAbstraction;
import org.neo4j.io.pagecache.PageCache;
import org.neo4j.kernel.monitoring.Monitors;
import org.neo4j.logging.LogProvider;
import org.neo4j.logging.NullLogProvider;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.anyBoolean;
import static org.mockito.Matchers.anyLong;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import static org.neo4j.causalclustering.catchup.CatchupResult.SUCCESS_END_OF_STREAM;
public class RemoteStoreTest
{
@Test
public void shouldCopyStoreFilesAndPullTransactions() throws Exception
{
// given
StoreId storeId = new StoreId( 1, 2, 3, 4 );
StoreCopyClient storeCopyClient = mock( StoreCopyClient.class );
TxPullClient txPullClient = mock( TxPullClient.class );
when( txPullClient.pullTransactions( any(), any(), anyLong(), any() ) ).thenReturn( new TxPullRequestResult( SUCCESS_END_OF_STREAM, 13) );
TransactionLogCatchUpWriter writer = mock( TransactionLogCatchUpWriter.class );
RemoteStore remoteStore = new RemoteStore( NullLogProvider.getInstance(), mock( FileSystemAbstraction.class ),
null, storeCopyClient, txPullClient, factory( writer ), new Monitors() );
// when
MemberId localhost = new MemberId( UUID.randomUUID() );
remoteStore.copy( localhost, storeId, new File( "destination" ) );
// then
verify( storeCopyClient ).copyStoreFiles( eq( localhost ), eq( storeId ), any( StoreFileStreams.class ) );
verify( txPullClient ).pullTransactions( eq( localhost ), eq( storeId ), anyLong(), any( TxPullResponseListener.class ) );
}
@Test
public void shouldSetLastPulledTransactionId() throws Exception
{
// given
long lastFlushedTxId = 12;
StoreId wantedStoreId = new StoreId( 1, 2, 3, 4 );
MemberId localhost = new MemberId( UUID.randomUUID() );
StoreCopyClient storeCopyClient = mock( StoreCopyClient.class );
when( storeCopyClient.copyStoreFiles( eq( localhost ), eq( wantedStoreId ), any( StoreFileStreams.class ) ) )
.thenReturn( lastFlushedTxId );
TxPullClient txPullClient = mock( TxPullClient.class );
when( txPullClient.pullTransactions( eq( localhost ), eq( wantedStoreId ), anyLong(), any( TxPullResponseListener.class ) ) )
.thenReturn( new TxPullRequestResult( SUCCESS_END_OF_STREAM, 13) );
TransactionLogCatchUpWriter writer = mock( TransactionLogCatchUpWriter.class );
RemoteStore remoteStore = new RemoteStore( NullLogProvider.getInstance(), mock( FileSystemAbstraction.class ),
null, storeCopyClient, txPullClient, factory( writer ), new Monitors() );
// when
remoteStore.copy( localhost, wantedStoreId, new File( "destination" ) );
// then
long previousTxId = lastFlushedTxId - 1; // the interface is defined as asking for the one preceding
verify( txPullClient ).pullTransactions( eq( localhost ), eq( wantedStoreId ), eq( previousTxId ), any( TxPullResponseListener.class ) );
}
@Test
public void shouldCloseDownTxLogWriterIfTxStreamingFails() throws Exception
{
// given
StoreId storeId = new StoreId( 1, 2, 3, 4 );
StoreCopyClient storeCopyClient = mock( StoreCopyClient.class );
TxPullClient txPullClient = mock( TxPullClient.class );
TransactionLogCatchUpWriter writer = mock( TransactionLogCatchUpWriter.class );
RemoteStore remoteStore = new RemoteStore( NullLogProvider.getInstance(), mock( FileSystemAbstraction.class ),
null,
storeCopyClient, txPullClient, factory( writer ), new Monitors() );
doThrow( StoreCopyFailedException.class ).when( txPullClient )
.pullTransactions( any( MemberId.class ), eq( storeId ), anyLong(), any( TransactionLogCatchUpWriter.class ) );
// when
try
{
remoteStore.copy( null, storeId, null );
}
catch ( StoreCopyFailedException e )
{
// expected
}
// then
verify( writer ).close();
}
private TransactionLogCatchUpFactory factory( TransactionLogCatchUpWriter writer ) throws IOException
{
TransactionLogCatchUpFactory factory = mock( TransactionLogCatchUpFactory.class );
when( factory.create( any( File.class ), any( FileSystemAbstraction.class ),
any( PageCache.class ), any( LogProvider.class ), anyLong(), anyBoolean() ) ).thenReturn( writer );
return factory;
}
}