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BackupImpl.java
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BackupImpl.java
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/*
* Copyright (c) 2002-2016 "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.backup;
import org.neo4j.com.RequestContext;
import org.neo4j.com.Response;
import org.neo4j.com.storecopy.ResponsePacker;
import org.neo4j.com.storecopy.StoreCopyServer;
import org.neo4j.com.storecopy.StoreWriter;
import org.neo4j.helpers.Provider;
import org.neo4j.kernel.impl.store.StoreId;
import org.neo4j.kernel.impl.transaction.log.LogFileInformation;
import org.neo4j.kernel.impl.transaction.log.LogicalTransactionStore;
import org.neo4j.kernel.impl.transaction.log.TransactionIdStore;
import org.neo4j.kernel.logging.ConsoleLogger;
import org.neo4j.kernel.logging.Logging;
import org.neo4j.kernel.monitoring.Monitors;
import static org.neo4j.com.RequestContext.anonymous;
class BackupImpl implements TheBackupInterface
{
private final StoreCopyServer storeCopyServer;
private final ResponsePacker incrementalResponsePacker;
private final LogicalTransactionStore logicalTransactionStore;
private final Provider<StoreId> storeId;
private final TransactionIdStore transactionIdStore;
private final LogFileInformation logFileInformation;
private final ConsoleLogger logger;
public BackupImpl( StoreCopyServer storeCopyServer, Monitors monitors,
LogicalTransactionStore logicalTransactionStore, TransactionIdStore transactionIdStore,
LogFileInformation logFileInformation, Provider<StoreId> storeId, Logging logging )
{
this.storeCopyServer = storeCopyServer;
this.logicalTransactionStore = logicalTransactionStore;
this.transactionIdStore = transactionIdStore;
this.logFileInformation = logFileInformation;
this.storeId = storeId;
this.logger = logging.getConsoleLog( getClass() );
this.incrementalResponsePacker = new ResponsePacker( logicalTransactionStore, transactionIdStore, storeId );
}
@Override
public Response<Void> fullBackup( StoreWriter writer, boolean forensics )
{
try ( StoreWriter storeWriter = writer )
{
logger.log( "Full backup started..." );
RequestContext copyStartContext = storeCopyServer.flushStoresAndStreamStoreFiles( storeWriter, forensics );
ResponsePacker responsePacker = new StoreCopyResponsePacker( logicalTransactionStore,
transactionIdStore, logFileInformation, storeId,
copyStartContext.lastAppliedTransaction() + 1, storeCopyServer.monitor() ); // mandatory transaction id
long optionalTransactionId = copyStartContext.lastAppliedTransaction();
return responsePacker.packTransactionStreamResponse( anonymous( optionalTransactionId ), null/*no response object*/ );
}
finally
{
logger.log( "Full backup finished." );
}
}
@Override
public Response<Void> incrementalBackup( RequestContext context )
{
try
{
logger.log("Incremental backup started...");
return incrementalResponsePacker.packTransactionStreamResponse( context, null );
} finally {
logger.log("Incremental backup finished.");
}
}
}