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BackupFlowFactory.java
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BackupFlowFactory.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.backup;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import org.neo4j.commandline.admin.OutsideWorld;
import org.neo4j.consistency.ConsistencyCheckService;
import org.neo4j.helpers.progress.ProgressMonitorFactory;
import org.neo4j.io.pagecache.PageCache;
import org.neo4j.logging.LogProvider;
/*
Backup flows are iterate through backup strategies and make sure at least one of them is a valid backup. Handles cases when that isn't possible.
This factory helps in the construction of them
*/
class BackupFlowFactory
{
private final LogProvider logProvider;
private final ConsistencyCheckService consistencyCheckService;
private final AddressResolutionHelper addressResolutionHelper;
private final BackupCopyService backupCopyService;
private final OutsideWorld outsideWorld;
BackupFlowFactory( BackupModuleResolveAtRuntime backupModuleResolveAtRuntime )
{
this.logProvider = backupModuleResolveAtRuntime.getLogProvider();
this.outsideWorld = backupModuleResolveAtRuntime.getOutsideWorld();
this.backupCopyService = backupModuleResolveAtRuntime.getBackupCopyService();
this.consistencyCheckService = new ConsistencyCheckService();
this.addressResolutionHelper = new AddressResolutionHelper();
}
BackupFlow backupFlow( OnlineBackupContext onlineBackupContext, BackupProtocolService backupProtocolService, BackupDelegator backupDelegator,
PageCache pageCache )
{
ProgressMonitorFactory progressMonitorFactory = ProgressMonitorFactory.textual( outsideWorld.errorStream() );
List<BackupStrategyWrapper> strategies = Stream
.of(
new CausalClusteringBackupStrategy( backupDelegator, addressResolutionHelper ),
new HaBackupStrategy( backupProtocolService, addressResolutionHelper, onlineBackupContext.getRequiredArguments().getTimeout() ) )
.map( strategy -> new BackupStrategyWrapper( strategy, backupCopyService, pageCache, onlineBackupContext.getConfig(),
new BackupRecoveryService() ) )
.collect( Collectors.toList() );
return new BackupFlow( consistencyCheckService, outsideWorld, logProvider, progressMonitorFactory, strategies );
}
}