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StoreCopyProcess.java
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StoreCopyProcess.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 java.io.IOException;
import org.neo4j.causalclustering.identity.StoreId;
import org.neo4j.helpers.AdvertisedSocketAddress;
import org.neo4j.io.fs.FileSystemAbstraction;
import org.neo4j.io.pagecache.PageCache;
import org.neo4j.logging.Log;
import org.neo4j.logging.LogProvider;
public class StoreCopyProcess
{
private final FileSystemAbstraction fs;
private final PageCache pageCache;
private final LocalDatabase localDatabase;
private final CopiedStoreRecovery copiedStoreRecovery;
private final Log log;
private final RemoteStore remoteStore;
public StoreCopyProcess( FileSystemAbstraction fs, PageCache pageCache, LocalDatabase localDatabase,
CopiedStoreRecovery copiedStoreRecovery, RemoteStore remoteStore, LogProvider logProvider )
{
this.fs = fs;
this.pageCache = pageCache;
this.localDatabase = localDatabase;
this.copiedStoreRecovery = copiedStoreRecovery;
this.remoteStore = remoteStore;
this.log = logProvider.getLog( getClass() );
}
public void replaceWithStoreFrom( AdvertisedSocketAddress source, StoreId expectedStoreId )
throws IOException, StoreCopyFailedException, StreamingTransactionsFailedException
{
try ( TemporaryStoreDirectory tempStore = new TemporaryStoreDirectory( fs, pageCache,
localDatabase.storeDir() ) )
{
remoteStore.copy( source, expectedStoreId, tempStore.storeDir() );
copiedStoreRecovery.recoverCopiedStore( tempStore.storeDir() );
localDatabase.replaceWith( tempStore.storeDir() );
}
log.info( "Replaced store with one downloaded from %s", source );
}
}