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NeoStoreIndexStoreViewTest.java
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NeoStoreIndexStoreViewTest.java
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/*
* Copyright (c) 2002-2019 "Neo4j,"
* Neo4j Sweden AB [http://neo4j.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.transaction.state.storeview;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.mockito.InOrder;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.neo4j.graphdb.Label;
import org.neo4j.graphdb.Node;
import org.neo4j.graphdb.Relationship;
import org.neo4j.graphdb.RelationshipType;
import org.neo4j.graphdb.Transaction;
import org.neo4j.helpers.collection.Iterables;
import org.neo4j.helpers.collection.Visitor;
import org.neo4j.internal.kernel.api.TokenWrite;
import org.neo4j.internal.kernel.api.exceptions.EntityNotFoundException;
import org.neo4j.internal.kernel.api.exceptions.KernelException;
import org.neo4j.internal.kernel.api.schema.LabelSchemaDescriptor;
import org.neo4j.kernel.api.index.IndexEntryUpdate;
import org.neo4j.kernel.api.labelscan.NodeLabelUpdate;
import org.neo4j.kernel.api.schema.RelationTypeSchemaDescriptor;
import org.neo4j.kernel.api.schema.SchemaDescriptorFactory;
import org.neo4j.kernel.impl.api.index.EntityUpdates;
import org.neo4j.kernel.impl.api.index.StoreScan;
import org.neo4j.kernel.impl.core.ThreadToStatementContextBridge;
import org.neo4j.kernel.impl.locking.Lock;
import org.neo4j.kernel.impl.locking.LockService;
import org.neo4j.kernel.impl.storageengine.impl.recordstorage.RecordStorageEngine;
import org.neo4j.kernel.impl.storageengine.impl.recordstorage.RecordStorageReader;
import org.neo4j.kernel.impl.store.NeoStores;
import org.neo4j.kernel.internal.GraphDatabaseAPI;
import org.neo4j.storageengine.api.StorageNodeCursor;
import org.neo4j.storageengine.api.StorageReader;
import org.neo4j.storageengine.api.StorageRelationshipScanCursor;
import org.neo4j.test.rule.EmbeddedDatabaseRule;
import org.neo4j.values.storable.Value;
import org.neo4j.values.storable.Values;
import static java.util.Collections.emptySet;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.containsInAnyOrder;
import static org.hamcrest.Matchers.greaterThanOrEqualTo;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyLong;
import static org.mockito.Mockito.inOrder;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import static org.neo4j.helpers.collection.Iterators.asSet;
public class NeoStoreIndexStoreViewTest
{
@Rule
public EmbeddedDatabaseRule dbRule = new EmbeddedDatabaseRule();
private final Map<Long, Lock> lockMocks = new HashMap<>();
private final Label label = Label.label( "Person" );
private final RelationshipType relationshipType = RelationshipType.withName( "Knows" );
private GraphDatabaseAPI graphDb;
private NeoStoreIndexStoreView storeView;
private int labelId;
private int relTypeId;
private int propertyKeyId;
private int relPropertyKeyId;
private Node alistair;
private Node stefan;
private LockService locks;
private NeoStores neoStores;
private Relationship aKnowsS;
private Relationship sKnowsA;
private StorageReader reader;
@Before
public void before() throws KernelException
{
graphDb = dbRule.getGraphDatabaseAPI();
createAlistairAndStefanNodes();
getOrCreateIds();
neoStores = graphDb.getDependencyResolver().resolveDependency( RecordStorageEngine.class ).testAccessNeoStores();
locks = mock( LockService.class );
when( locks.acquireNodeLock( anyLong(), any() ) ).thenAnswer(
invocation ->
{
Long nodeId = invocation.getArgument( 0 );
return lockMocks.computeIfAbsent( nodeId, k -> mock( Lock.class ) );
} );
when( locks.acquireRelationshipLock( anyLong(), any() ) ).thenAnswer( invocation ->
{
Long nodeId = invocation.getArgument( 0 );
return lockMocks.computeIfAbsent( nodeId, k -> mock( Lock.class ) );
} );
storeView = new NeoStoreIndexStoreView( locks, neoStores );
reader = new RecordStorageReader( neoStores );
}
@After
public void after()
{
reader.close();
}
@Test
public void shouldScanExistingNodesForALabel() throws Exception
{
// given
EntityUpdateCollectingVisitor visitor = new EntityUpdateCollectingVisitor();
@SuppressWarnings( "unchecked" )
Visitor<NodeLabelUpdate,Exception> labelVisitor = mock( Visitor.class );
StoreScan<Exception> storeScan =
storeView.visitNodes( new int[]{labelId}, id -> id == propertyKeyId, visitor, labelVisitor, false );
// when
storeScan.run();
// then
assertEquals(
asSet(
add( alistair.getId(), propertyKeyId, "Alistair", new long[] { labelId } ),
add( stefan.getId(), propertyKeyId, "Stefan", new long[] { labelId } )
), visitor.getUpdates() );
}
@Test
public void shouldScanExistingRelationshipsForARelationshiptype() throws Exception
{
// given
EntityUpdateCollectingVisitor visitor = new EntityUpdateCollectingVisitor();
@SuppressWarnings( "unchecked" )
StoreScan<Exception> storeScan =
storeView.visitRelationships( new int[]{relTypeId}, id -> id == relPropertyKeyId, visitor );
// when
storeScan.run();
// then
assertEquals( asSet( add( aKnowsS.getId(), relPropertyKeyId, "long", new long[]{relTypeId} ),
add( sKnowsA.getId(), relPropertyKeyId, "lengthy", new long[]{relTypeId} ) ), visitor.getUpdates() );
}
@Test
public void shouldIgnoreDeletedNodesDuringScan() throws Exception
{
// given
deleteAlistairAndStefanNodes();
EntityUpdateCollectingVisitor visitor = new EntityUpdateCollectingVisitor();
@SuppressWarnings( "unchecked" )
Visitor<NodeLabelUpdate,Exception> labelVisitor = mock( Visitor.class );
StoreScan<Exception> storeScan = storeView.visitNodes( new int[]{labelId}, id -> id == propertyKeyId, visitor, labelVisitor, false );
// when
storeScan.run();
// then
assertEquals( emptySet(), visitor.getUpdates() );
}
@Test
public void shouldIgnoreDeletedRelationshipsDuringScan() throws Exception
{
// given
deleteAlistairAndStefanNodes();
EntityUpdateCollectingVisitor visitor = new EntityUpdateCollectingVisitor();
@SuppressWarnings( "unchecked" )
StoreScan<Exception> storeScan =
storeView.visitRelationships( new int[]{relTypeId}, id -> id == relPropertyKeyId, visitor );
// when
storeScan.run();
// then
assertEquals( emptySet(), visitor.getUpdates() );
}
@Test
public void shouldLockNodesWhileReadingThem() throws Exception
{
// given
@SuppressWarnings( "unchecked" )
Visitor<EntityUpdates,Exception> visitor = mock( Visitor.class );
StoreScan<Exception> storeScan =
storeView.visitNodes( new int[]{labelId}, id -> id == propertyKeyId, visitor, null, false );
// when
storeScan.run();
// then
assertThat( "allocated locks: " + lockMocks.keySet(), lockMocks.size(), greaterThanOrEqualTo( 2 ) );
Lock lock0 = lockMocks.get( 0L );
Lock lock1 = lockMocks.get( 1L );
assertNotNull( "Lock[node=0] never acquired", lock0 );
assertNotNull( "Lock[node=1] never acquired", lock1 );
InOrder order = inOrder( locks, lock0, lock1 );
order.verify( locks ).acquireNodeLock( 0, LockService.LockType.READ_LOCK );
order.verify( lock0 ).release();
order.verify( locks ).acquireNodeLock( 1, LockService.LockType.READ_LOCK );
order.verify( lock1 ).release();
}
@Test
public void shouldLockRelationshipsWhileReadingThem() throws Exception
{
// given
@SuppressWarnings( "unchecked" )
Visitor<EntityUpdates,Exception> visitor = mock( Visitor.class );
StoreScan<Exception> storeScan = storeView.visitRelationships( new int[]{relTypeId}, id -> id == relPropertyKeyId, visitor );
// when
storeScan.run();
// then
assertThat( "allocated locks: " + lockMocks.keySet(), lockMocks.size(), greaterThanOrEqualTo( 2 ) );
Lock lock0 = lockMocks.get( 0L );
Lock lock1 = lockMocks.get( 1L );
assertNotNull( "Lock[relationship=0] never acquired", lock0 );
assertNotNull( "Lock[relationship=1] never acquired", lock1 );
InOrder order = inOrder( locks, lock0, lock1 );
order.verify( locks ).acquireRelationshipLock( 0, LockService.LockType.READ_LOCK );
order.verify( lock0 ).release();
order.verify( locks ).acquireRelationshipLock( 1, LockService.LockType.READ_LOCK );
order.verify( lock1 ).release();
}
@Test
public void shouldReadProperties() throws EntityNotFoundException
{
Value value = storeView.getNodePropertyValue( alistair.getId(), propertyKeyId );
assertTrue( value.equals( Values.of( "Alistair" ) ) );
}
@Test
public void processAllNodeProperties() throws Exception
{
CopyUpdateVisitor propertyUpdateVisitor = new CopyUpdateVisitor();
StoreViewNodeStoreScan storeViewNodeStoreScan =
new StoreViewNodeStoreScan( new RecordStorageReader( neoStores ), locks,
null, propertyUpdateVisitor, new int[]{labelId},
id -> true );
try ( StorageNodeCursor nodeCursor = reader.allocateNodeCursor() )
{
nodeCursor.single( 1 );
nodeCursor.next();
storeViewNodeStoreScan.process( nodeCursor );
}
EntityUpdates propertyUpdates = propertyUpdateVisitor.getPropertyUpdates();
assertNotNull( "Visitor should contain container with updates.", propertyUpdates );
LabelSchemaDescriptor index1 = SchemaDescriptorFactory.forLabel( 0, 0 );
LabelSchemaDescriptor index2 = SchemaDescriptorFactory.forLabel( 0, 1 );
LabelSchemaDescriptor index3 = SchemaDescriptorFactory.forLabel( 0, 0, 1 );
LabelSchemaDescriptor index4 = SchemaDescriptorFactory.forLabel( 1, 1 );
List<LabelSchemaDescriptor> indexes = Arrays.asList( index1, index2, index3, index4 );
assertThat(
Iterables.map(
IndexEntryUpdate::indexKey,
propertyUpdates.forIndexKeys( indexes ) ),
containsInAnyOrder( index1, index2, index3 ) );
}
@Test
public void processAllRelationshipProperties() throws Exception
{
createAlistairAndStefanNodes();
CopyUpdateVisitor propertyUpdateVisitor = new CopyUpdateVisitor();
RelationshipStoreScan relationshipStoreScan =
new RelationshipStoreScan( new RecordStorageReader( neoStores ), locks, propertyUpdateVisitor, new int[]{relTypeId},
id -> true );
try ( StorageRelationshipScanCursor relationshipScanCursor = reader.allocateRelationshipScanCursor() )
{
relationshipScanCursor.single( 1 );
relationshipScanCursor.next();
relationshipStoreScan.process( relationshipScanCursor );
}
EntityUpdates propertyUpdates = propertyUpdateVisitor.getPropertyUpdates();
assertNotNull( "Visitor should contain container with updates.", propertyUpdates );
RelationTypeSchemaDescriptor index1 = SchemaDescriptorFactory.forRelType( 0, 2 );
RelationTypeSchemaDescriptor index2 = SchemaDescriptorFactory.forRelType( 0, 3 );
RelationTypeSchemaDescriptor index3 = SchemaDescriptorFactory.forRelType( 0, 2, 3 );
RelationTypeSchemaDescriptor index4 = SchemaDescriptorFactory.forRelType( 1, 3 );
List<RelationTypeSchemaDescriptor> indexes = Arrays.asList( index1, index2, index3, index4 );
assertThat( Iterables.map( IndexEntryUpdate::indexKey, propertyUpdates.forIndexKeys( indexes ) ), containsInAnyOrder( index1, index2, index3 ) );
}
EntityUpdates add( long nodeId, int propertyKeyId, Object value, long[] labels )
{
return EntityUpdates.forEntity( nodeId, true ).withTokens( labels ).added( propertyKeyId, Values.of( value ) ).build();
}
private void createAlistairAndStefanNodes()
{
try ( Transaction tx = graphDb.beginTx() )
{
alistair = graphDb.createNode( label );
alistair.setProperty( "name", "Alistair" );
alistair.setProperty( "country", "UK" );
stefan = graphDb.createNode( label );
stefan.setProperty( "name", "Stefan" );
stefan.setProperty( "country", "Deutschland" );
aKnowsS = alistair.createRelationshipTo( stefan, relationshipType );
aKnowsS.setProperty( "duration", "long" );
aKnowsS.setProperty( "irrelevant", "prop" );
sKnowsA = stefan.createRelationshipTo( alistair, relationshipType );
sKnowsA.setProperty( "duration", "lengthy" );
sKnowsA.setProperty( "irrelevant", "prop" );
tx.success();
}
}
private void deleteAlistairAndStefanNodes()
{
try ( Transaction tx = graphDb.beginTx() )
{
aKnowsS.delete();
sKnowsA.delete();
alistair.delete();
stefan.delete();
tx.success();
}
}
private void getOrCreateIds() throws KernelException
{
try ( Transaction tx = graphDb.beginTx() )
{
ThreadToStatementContextBridge bridge =
graphDb.getDependencyResolver().resolveDependency( ThreadToStatementContextBridge.class );
TokenWrite tokenWrite = bridge.getKernelTransactionBoundToThisThread( true ).tokenWrite();
labelId = tokenWrite.labelGetOrCreateForName( "Person" );
relTypeId = tokenWrite.relationshipTypeGetOrCreateForName( "Knows" );
propertyKeyId = tokenWrite.propertyKeyGetOrCreateForName( "name" );
relPropertyKeyId = tokenWrite.propertyKeyGetOrCreateForName( "duration" );
tx.success();
}
}
private static class CopyUpdateVisitor implements Visitor<EntityUpdates,RuntimeException>
{
private EntityUpdates propertyUpdates;
@Override
public boolean visit( EntityUpdates element ) throws RuntimeException
{
propertyUpdates = element;
return true;
}
public EntityUpdates getPropertyUpdates()
{
return propertyUpdates;
}
}
class EntityUpdateCollectingVisitor implements Visitor<EntityUpdates,Exception>
{
private final Set<EntityUpdates> updates = new HashSet<>();
@Override
public boolean visit( EntityUpdates propertyUpdates )
{
updates.add( propertyUpdates );
return false;
}
Set<EntityUpdates> getUpdates()
{
return updates;
}
}
}