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FailedIndexProxy.java
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FailedIndexProxy.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 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.index;
import java.io.File;
import java.io.IOException;
import java.util.concurrent.Future;
import org.neo4j.graphdb.ResourceIterator;
import org.neo4j.internal.kernel.api.IndexCapability;
import org.neo4j.kernel.api.exceptions.index.IndexPopulationFailedKernelException;
import org.neo4j.kernel.api.index.IndexPopulator;
import org.neo4j.kernel.api.index.InternalIndexState;
import org.neo4j.kernel.api.index.SchemaIndexProvider;
import org.neo4j.kernel.api.schema.index.IndexDescriptor;
import org.neo4j.logging.Log;
import org.neo4j.logging.LogProvider;
import static org.neo4j.helpers.FutureAdapter.VOID;
import static org.neo4j.helpers.collection.Iterators.emptyResourceIterator;
public class FailedIndexProxy extends AbstractSwallowingIndexProxy
{
protected final IndexPopulator populator;
private final String indexUserDescription;
private final IndexCountsRemover indexCountsRemover;
private final Log log;
FailedIndexProxy( IndexDescriptor descriptor,
SchemaIndexProvider.Descriptor providerDescriptor,
IndexCapability indexCapability,
String indexUserDescription,
IndexPopulator populator,
IndexPopulationFailure populationFailure,
IndexCountsRemover indexCountsRemover,
LogProvider logProvider )
{
super( descriptor, providerDescriptor, indexCapability, populationFailure );
this.populator = populator;
this.indexUserDescription = indexUserDescription;
this.indexCountsRemover = indexCountsRemover;
this.log = logProvider.getLog( getClass() );
}
@Override
public Future<Void> drop() throws IOException
{
indexCountsRemover.remove();
String message = "FailedIndexProxy#drop index on " + indexUserDescription + " dropped due to:\n" +
getPopulationFailure().asString();
log.info( message );
populator.drop();
return VOID;
}
@Override
public InternalIndexState getState()
{
return InternalIndexState.FAILED;
}
@Override
public boolean awaitStoreScanCompleted() throws IndexPopulationFailedKernelException
{
throw getPopulationFailure().asIndexPopulationFailure( getDescriptor().schema(), indexUserDescription );
}
@Override
public void activate()
{
throw new UnsupportedOperationException( "Cannot activate a failed index." );
}
@Override
public void validate() throws IndexPopulationFailedKernelException
{
throw getPopulationFailure().asIndexPopulationFailure( getDescriptor().schema(), indexUserDescription );
}
@Override
public ResourceIterator<File> snapshotFiles()
{
return emptyResourceIterator();
}
}