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GraphStoreFixture.java
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GraphStoreFixture.java
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/*
* Copyright (c) 2002-2015 "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.consistency.checking;
import org.junit.rules.TestRule;
import org.junit.runner.Description;
import org.junit.runners.model.Statement;
import java.io.File;
import java.util.Collection;
import org.neo4j.consistency.statistics.AccessStatistics;
import org.neo4j.consistency.statistics.AccessStatsKeepingStoreAccess;
import org.neo4j.consistency.statistics.DefaultCounts;
import org.neo4j.consistency.statistics.Statistics;
import org.neo4j.consistency.statistics.VerboseStatistics;
import org.neo4j.graphdb.DependencyResolver;
import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.factory.GraphDatabaseBuilder;
import org.neo4j.index.lucene.LuceneLabelScanStoreBuilder;
import org.neo4j.io.fs.DefaultFileSystemAbstraction;
import org.neo4j.io.fs.FileSystemAbstraction;
import org.neo4j.io.pagecache.PageCache;
import org.neo4j.kernel.GraphDatabaseAPI;
import org.neo4j.kernel.api.ReadOperations;
import org.neo4j.kernel.api.direct.DirectStoreAccess;
import org.neo4j.kernel.api.exceptions.TransactionFailureException;
import org.neo4j.kernel.api.impl.index.DirectoryFactory;
import org.neo4j.kernel.api.impl.index.LuceneSchemaIndexProvider;
import org.neo4j.kernel.api.index.SchemaIndexProvider;
import org.neo4j.kernel.impl.api.TransactionApplicationMode;
import org.neo4j.kernel.impl.api.TransactionRepresentationCommitProcess;
import org.neo4j.kernel.impl.api.TransactionToApply;
import org.neo4j.kernel.impl.storageengine.StorageEngine;
import org.neo4j.kernel.impl.store.NeoStores;
import org.neo4j.kernel.impl.store.NodeLabelsField;
import org.neo4j.kernel.impl.store.NodeStore;
import org.neo4j.kernel.impl.store.StoreAccess;
import org.neo4j.kernel.impl.store.StoreFactory;
import org.neo4j.kernel.impl.store.record.DynamicRecord;
import org.neo4j.kernel.impl.store.record.NeoStoreRecord;
import org.neo4j.kernel.impl.store.record.NodeRecord;
import org.neo4j.kernel.impl.store.record.PropertyRecord;
import org.neo4j.kernel.impl.store.record.RelationshipGroupRecord;
import org.neo4j.kernel.impl.store.record.RelationshipRecord;
import org.neo4j.kernel.impl.store.record.SchemaRule;
import org.neo4j.kernel.impl.transaction.TransactionRepresentation;
import org.neo4j.kernel.impl.transaction.log.TransactionAppender;
import org.neo4j.kernel.impl.transaction.log.TransactionIdStore;
import org.neo4j.kernel.impl.transaction.tracing.CommitEvent;
import org.neo4j.logging.FormattedLogProvider;
import org.neo4j.logging.NullLog;
import org.neo4j.logging.NullLogProvider;
import org.neo4j.test.PageCacheRule;
import org.neo4j.test.TargetDirectory;
import org.neo4j.test.TestGraphDatabaseFactory;
import static java.lang.System.currentTimeMillis;
import static org.neo4j.consistency.ConsistencyCheckService.defaultConsistencyCheckThreadsNumber;
public abstract class GraphStoreFixture extends PageCacheRule implements TestRule
{
private DirectStoreAccess directStoreAccess;
private Statistics statistics;
private final boolean keepStatistics;
private NeoStores neoStore;
public GraphStoreFixture( boolean keepStatistics )
{
this.keepStatistics = keepStatistics;
}
public GraphStoreFixture()
{
this( false );
}
public void apply( Transaction transaction ) throws TransactionFailureException
{
applyTransaction( transaction );
}
public DirectStoreAccess directStoreAccess()
{
if ( directStoreAccess == null )
{
DefaultFileSystemAbstraction fileSystem = new DefaultFileSystemAbstraction();
PageCache pageCache = getPageCache( fileSystem );
neoStore = new StoreFactory( fileSystem, directory, pageCache, NullLogProvider.getInstance() ).openAllNeoStores();
StoreAccess nativeStores;
if ( keepStatistics )
{
AccessStatistics accessStatistics = new AccessStatistics();
statistics = new VerboseStatistics( accessStatistics,
new DefaultCounts( defaultConsistencyCheckThreadsNumber() ), NullLog.getInstance() );
nativeStores = new AccessStatsKeepingStoreAccess( neoStore, accessStatistics );
}
else
{
statistics = Statistics.NONE;
nativeStores = new StoreAccess( neoStore );
}
nativeStores.initialize();
directStoreAccess = new DirectStoreAccess(
nativeStores,
new LuceneLabelScanStoreBuilder(
directory,
nativeStores.getRawNeoStores(),
fileSystem,
FormattedLogProvider.toOutputStream( System.out )
).build(),
createIndexes( fileSystem )
);
}
return directStoreAccess;
}
private SchemaIndexProvider createIndexes( FileSystemAbstraction fileSystem )
{
return new LuceneSchemaIndexProvider( fileSystem, DirectoryFactory.PERSISTENT, directory );
}
public File directory()
{
return directory;
}
public Statistics getAccessStatistics()
{
return statistics;
}
public abstract static class Transaction
{
public final long startTimestamp = currentTimeMillis();
protected abstract void transactionData( TransactionDataBuilder tx, IdGenerator next );
public TransactionRepresentation representation( IdGenerator idGenerator, int masterId, int authorId,
long lastCommittedTx, NodeStore nodes )
{
TransactionWriter writer = new TransactionWriter();
transactionData( new TransactionDataBuilder( writer, nodes ), idGenerator );
return writer.representation( new byte[0], masterId, authorId, startTimestamp, lastCommittedTx,
currentTimeMillis() );
}
}
public IdGenerator idGenerator()
{
return new IdGenerator();
}
public class IdGenerator
{
public long schema()
{
return schemaId++;
}
public long node()
{
return nodeId++;
}
public int label()
{
return labelId++;
}
public long nodeLabel()
{
return nodeLabelsId++;
}
public long relationship()
{
return relId++;
}
public long relationshipGroup()
{
return relGroupId++;
}
public long property()
{
return propId++;
}
public long stringProperty()
{
return stringPropId++;
}
public long arrayProperty()
{
return arrayPropId++;
}
public int relationshipType()
{
return relTypeId++;
}
public int propertyKey()
{
return propKeyId++;
}
}
public static final class TransactionDataBuilder
{
private final TransactionWriter writer;
private final NodeStore nodes;
public TransactionDataBuilder( TransactionWriter writer, NodeStore nodes )
{
this.writer = writer;
this.nodes = nodes;
}
public void createSchema( Collection<DynamicRecord> beforeRecords, Collection<DynamicRecord> afterRecords,
SchemaRule rule )
{
writer.createSchema( beforeRecords, afterRecords, rule );
}
// In the following three methods there's an assumption that all tokens use one dynamic record
// and since the first record in a dynamic store the id starts at 1 instead of 0... hence the +1
public void propertyKey( int id, String key )
{
writer.propertyKey( id, key, id + 1 );
}
public void nodeLabel( int id, String name )
{
writer.label( id, name, id + 1 );
}
public void relationshipType( int id, String relationshipType )
{
writer.relationshipType( id, relationshipType, id + 1 );
}
public void update( NeoStoreRecord before, NeoStoreRecord after )
{
writer.update( before, after );
}
public void create( NodeRecord node )
{
updateCounts( node, 1 );
writer.create( node );
}
public void update( NodeRecord before, NodeRecord after )
{
updateCounts( before, -1 );
updateCounts( after, 1 );
writer.update( before, after );
}
public void delete( NodeRecord node )
{
updateCounts( node, -1 );
writer.delete( node );
}
public void create( RelationshipRecord relationship )
{
writer.create( relationship );
}
public void update( RelationshipRecord before, RelationshipRecord after )
{
writer.update( before, after );
}
public void delete( RelationshipRecord relationship )
{
writer.delete( relationship );
}
public void create( RelationshipGroupRecord group )
{
writer.create( group );
}
public void update( RelationshipGroupRecord before, RelationshipGroupRecord after )
{
writer.update( before, after );
}
public void delete( RelationshipGroupRecord group )
{
writer.delete( group );
}
public void create( PropertyRecord property )
{
writer.create( property );
}
public void update( PropertyRecord before, PropertyRecord property )
{
writer.update( before, property );
}
public void delete( PropertyRecord before, PropertyRecord property )
{
writer.delete( before, property );
}
private void updateCounts( NodeRecord node, int delta )
{
writer.incrementNodeCount( ReadOperations.ANY_LABEL, delta );
for ( long label : NodeLabelsField.parseLabelsField( node ).get( nodes ) )
{
writer.incrementNodeCount( (int)label, delta );
}
}
public void incrementNodeCount( int labelId, long delta )
{
writer.incrementNodeCount( labelId, delta );
}
public void incrementRelationshipCount( int startLabelId, int typeId, int endLabelId, long delta )
{
writer.incrementRelationshipCount( startLabelId, typeId, endLabelId, delta );
}
}
protected abstract void generateInitialData( GraphDatabaseService graphDb );
protected void start( @SuppressWarnings("UnusedParameters") File storeDir )
{
// allow for override
}
protected void stop() throws Throwable
{
if ( directStoreAccess != null )
{
neoStore.close();
directStoreAccess.close();
directStoreAccess = null;
}
}
protected int myId()
{
return 1;
}
protected int masterId()
{
return -1;
}
@SuppressWarnings("deprecation")
protected void applyTransaction( Transaction transaction ) throws TransactionFailureException
{
// TODO you know... we could have just appended the transaction representation to the log
// and the next startup of the store would do recovery where the transaction would have been
// applied and all would have been well.
GraphDatabaseBuilder builder = new TestGraphDatabaseFactory().newEmbeddedDatabaseBuilder( directory );
GraphDatabaseAPI database = (GraphDatabaseAPI) builder.newGraphDatabase();
try
{
DependencyResolver dependencyResolver = database.getDependencyResolver();
TransactionRepresentationCommitProcess commitProcess =
new TransactionRepresentationCommitProcess(
dependencyResolver.resolveDependency( TransactionAppender.class ),
dependencyResolver.resolveDependency( StorageEngine.class ) );
TransactionIdStore transactionIdStore = database.getDependencyResolver().resolveDependency(
TransactionIdStore.class );
NodeStore nodes = database.getDependencyResolver().resolveDependency( NeoStores.class ).getNodeStore();
TransactionRepresentation representation = transaction.representation( idGenerator(), masterId(), myId(),
transactionIdStore.getLastCommittedTransactionId(), nodes );
commitProcess.commit( new TransactionToApply( representation ), CommitEvent.NULL,
TransactionApplicationMode.EXTERNAL );
}
finally
{
database.shutdown();
}
}
private File directory;
private long schemaId;
private long nodeId;
private int labelId;
private long nodeLabelsId;
private long relId;
private long relGroupId;
private int propId;
private long stringPropId;
private long arrayPropId;
private int relTypeId;
private int propKeyId;
private void generateInitialData()
{
GraphDatabaseBuilder builder = new TestGraphDatabaseFactory().newEmbeddedDatabaseBuilder( directory );
GraphDatabaseAPI graphDb = (GraphDatabaseAPI) builder.newGraphDatabase();
try
{
generateInitialData( graphDb );
StoreAccess stores = new StoreAccess( graphDb ).initialize();
schemaId = stores.getSchemaStore().getHighId();
nodeId = stores.getNodeStore().getHighId();
labelId = (int) stores.getLabelTokenStore().getHighId();
nodeLabelsId = stores.getNodeDynamicLabelStore().getHighId();
relId = stores.getRelationshipStore().getHighId();
relGroupId = stores.getRelationshipGroupStore().getHighId();
propId = (int) stores.getPropertyStore().getHighId();
stringPropId = stores.getStringStore().getHighId();
arrayPropId = stores.getArrayStore().getHighId();
relTypeId = (int) stores.getRelationshipTypeTokenStore().getHighId();
propKeyId = (int) stores.getPropertyKeyNameStore().getHighId();
}
finally
{
graphDb.shutdown();
}
}
@Override
public Statement apply( final Statement base, Description description )
{
final TargetDirectory.TestDirectory directory = TargetDirectory.testDirForTest( description.getTestClass() );
return super.apply( directory.apply( new Statement()
{
@Override
public void evaluate() throws Throwable
{
GraphStoreFixture.this.directory = directory.graphDbDir();
try
{
generateInitialData();
start( GraphStoreFixture.this.directory );
try
{
base.evaluate();
}
finally
{
stop();
}
}
finally
{
GraphStoreFixture.this.directory = null;
}
}
}, description ), description );
}
}