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IndexIT.java
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IndexIT.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.api.index;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import java.util.List;
import java.util.Set;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import org.neo4j.graphdb.Label;
import org.neo4j.graphdb.schema.IndexDefinition;
import org.neo4j.helpers.collection.Iterables;
import org.neo4j.helpers.collection.Iterators;
import org.neo4j.internal.kernel.api.IndexReference;
import org.neo4j.internal.kernel.api.SchemaRead;
import org.neo4j.internal.kernel.api.SchemaWrite;
import org.neo4j.internal.kernel.api.TokenWrite;
import org.neo4j.internal.kernel.api.Transaction;
import org.neo4j.internal.kernel.api.Write;
import org.neo4j.internal.kernel.api.exceptions.KernelException;
import org.neo4j.internal.kernel.api.exceptions.schema.SchemaKernelException;
import org.neo4j.internal.kernel.api.schema.LabelSchemaDescriptor;
import org.neo4j.internal.kernel.api.schema.SchemaDescriptor;
import org.neo4j.storageengine.api.NodePropertyAccessor;
import org.neo4j.kernel.api.schema.MultiTokenSchemaDescriptor;
import org.neo4j.kernel.api.schema.SchemaDescriptorFactory;
import org.neo4j.kernel.api.schema.constraints.IndexBackedConstraintDescriptor;
import org.neo4j.kernel.configuration.Config;
import org.neo4j.kernel.impl.api.integrationtest.KernelIntegrationTest;
import org.neo4j.kernel.impl.api.state.ConstraintIndexCreator;
import org.neo4j.kernel.internal.GraphDatabaseAPI;
import org.neo4j.logging.AssertableLogProvider;
import org.neo4j.storageengine.api.EntityType;
import org.neo4j.storageengine.api.schema.IndexDescriptor;
import static java.util.Collections.emptySet;
import static java.util.Collections.singletonList;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.containsInAnyOrder;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.mockito.Mockito.mock;
import static org.neo4j.graphdb.Label.label;
import static org.neo4j.graphdb.RelationshipType.withName;
import static org.neo4j.graphdb.factory.GraphDatabaseSettings.default_schema_provider;
import static org.neo4j.helpers.collection.Iterables.single;
import static org.neo4j.helpers.collection.Iterators.asSet;
import static org.neo4j.internal.kernel.api.security.LoginContext.AUTH_DISABLED;
public class IndexIT extends KernelIntegrationTest
{
private static final String LABEL = "Label";
private static final String LABEL2 = "Label2";
private static final String REL_TYPE = "RelType";
private static final String REL_TYPE2 = "RelType2";
private static final String PROPERTY_KEY = "prop";
private static final String PROPERTY_KEY2 = "prop2";
private int labelId;
private int labelId2;
private int relType;
private int relType2;
private int propertyKeyId;
private int propertyKeyId2;
private LabelSchemaDescriptor descriptor;
private LabelSchemaDescriptor descriptor2;
private ExecutorService executorService;
@Before
public void createLabelAndProperty() throws Exception
{
TokenWrite tokenWrites = tokenWriteInNewTransaction();
labelId = tokenWrites.labelGetOrCreateForName( LABEL );
labelId2 = tokenWrites.labelGetOrCreateForName( LABEL2 );
relType = tokenWrites.relationshipTypeGetOrCreateForName( REL_TYPE );
relType2 = tokenWrites.relationshipTypeGetOrCreateForName( REL_TYPE2 );
propertyKeyId = tokenWrites.propertyKeyGetOrCreateForName( PROPERTY_KEY );
propertyKeyId2 = tokenWrites.propertyKeyGetOrCreateForName( PROPERTY_KEY2 );
descriptor = SchemaDescriptorFactory.forLabel( labelId, propertyKeyId );
descriptor2 = SchemaDescriptorFactory.forLabel( labelId, propertyKeyId2 );
commit();
executorService = Executors.newCachedThreadPool();
}
@After
public void tearDown()
{
executorService.shutdown();
}
@Test
public void createIndexForAnotherLabelWhileHoldingSharedLockOnOtherLabel() throws KernelException
{
TokenWrite tokenWrite = tokenWriteInNewTransaction();
int label2 = tokenWrite.labelGetOrCreateForName( "Label2" );
Write write = dataWriteInNewTransaction();
long nodeId = write.nodeCreate();
write.nodeAddLabel( nodeId, label2 );
schemaWriteInNewTransaction().indexCreate( descriptor );
commit();
}
@Test( timeout = 10_000 )
public void createIndexesForDifferentLabelsConcurrently() throws Throwable
{
TokenWrite tokenWrite = tokenWriteInNewTransaction();
int label2 = tokenWrite.labelGetOrCreateForName( "Label2" );
LabelSchemaDescriptor anotherLabelDescriptor = SchemaDescriptorFactory.forLabel( label2, propertyKeyId );
schemaWriteInNewTransaction().indexCreate( anotherLabelDescriptor );
Future<?> indexFuture = executorService.submit( createIndex( db, label( LABEL ), PROPERTY_KEY ) );
indexFuture.get();
commit();
}
@Test
public void addIndexRuleInATransaction() throws Exception
{
// GIVEN
SchemaWrite schemaWriteOperations = schemaWriteInNewTransaction();
// WHEN
IndexReference expectedRule = schemaWriteOperations.indexCreate( descriptor );
commit();
// THEN
SchemaRead schemaRead = newTransaction().schemaRead();
assertEquals( asSet( expectedRule ), asSet( schemaRead.indexesGetForLabel( labelId ) ) );
assertEquals( expectedRule, schemaRead.index( descriptor.getLabelId(), descriptor.getPropertyIds() ) );
commit();
}
@Test
public void committedAndTransactionalIndexRulesShouldBeMerged() throws Exception
{
// GIVEN
SchemaWrite schemaWriteOperations = schemaWriteInNewTransaction();
IndexReference existingRule = schemaWriteOperations.indexCreate( descriptor );
commit();
// WHEN
Transaction transaction = newTransaction( AUTH_DISABLED );
IndexReference addedRule = transaction.schemaWrite()
.indexCreate( SchemaDescriptorFactory.forLabel( labelId, 10 ) );
Set<IndexReference> indexRulesInTx = asSet( transaction.schemaRead().indexesGetForLabel( labelId ) );
commit();
// THEN
assertEquals( asSet( existingRule, addedRule ), indexRulesInTx );
}
@Test
public void rollBackIndexRuleShouldNotBeCommitted() throws Exception
{
// GIVEN
SchemaWrite schemaWrite = schemaWriteInNewTransaction();
// WHEN
schemaWrite.indexCreate( descriptor );
// don't mark as success
rollback();
// THEN
Transaction transaction = newTransaction();
assertEquals( emptySet(), asSet( transaction.schemaRead().indexesGetForLabel( labelId ) ) );
commit();
}
@Test
public void shouldBeAbleToRemoveAConstraintIndexWithoutOwner() throws Exception
{
// given
NodePropertyAccessor propertyAccessor = mock( NodePropertyAccessor.class );
AssertableLogProvider logProvider = new AssertableLogProvider();
ConstraintIndexCreator creator = new ConstraintIndexCreator( () -> kernel, indexingService, propertyAccessor, logProvider );
String defaultProvider = Config.defaults().get( default_schema_provider );
IndexDescriptor constraintIndex = creator.createConstraintIndex( descriptor, defaultProvider );
// then
Transaction transaction = newTransaction();
assertEquals( emptySet(), asSet( transaction.schemaRead().constraintsGetForLabel( labelId ) ) );
commit();
// when
SchemaWrite schemaWrite = schemaWriteInNewTransaction();
schemaWrite.indexDrop( constraintIndex );
commit();
// then
transaction = newTransaction();
assertEquals( emptySet(), asSet( transaction.schemaRead().indexesGetForLabel( labelId ) ) );
commit();
}
@Test
public void shouldDisallowDroppingIndexThatDoesNotExist() throws Exception
{
// given
IndexReference index;
{
SchemaWrite statement = schemaWriteInNewTransaction();
index = statement.indexCreate( descriptor );
commit();
}
{
SchemaWrite statement = schemaWriteInNewTransaction();
statement.indexDrop( index );
commit();
}
// when
try
{
SchemaWrite statement = schemaWriteInNewTransaction();
statement.indexDrop( index );
commit();
}
// then
catch ( SchemaKernelException e )
{
assertEquals( "Unable to drop index on :label[" + labelId + "](property[" + propertyKeyId + "]): " +
"No such INDEX ON :label[" + labelId + "](property[" + propertyKeyId + "]).", e.getMessage() );
}
commit();
}
@Test
public void shouldFailToCreateIndexWhereAConstraintAlreadyExists() throws Exception
{
// given
{
SchemaWrite statement = schemaWriteInNewTransaction();
statement.uniquePropertyConstraintCreate( descriptor );
commit();
}
// when
try
{
SchemaWrite statement = schemaWriteInNewTransaction();
statement.indexCreate( descriptor );
commit();
fail( "expected exception" );
}
// then
catch ( SchemaKernelException e )
{
assertEquals( "There is a uniqueness constraint on :" + LABEL + "(" + PROPERTY_KEY + "), so an index is " +
"already created that matches this.", e.getMessage() );
}
commit();
}
@Test
public void shouldListConstraintIndexesInTheCoreAPI() throws Exception
{
// given
Transaction transaction = newTransaction( AUTH_DISABLED );
transaction.schemaWrite().uniquePropertyConstraintCreate(
SchemaDescriptorFactory.forLabel(
transaction.tokenWrite().labelGetOrCreateForName( "Label1" ),
transaction.tokenWrite().propertyKeyGetOrCreateForName( "property1" )
) );
commit();
// when
try ( org.neo4j.graphdb.Transaction ignore = db.beginTx() )
{
Set<IndexDefinition> indexes = Iterables.asSet( db.schema().getIndexes() );
// then
assertEquals( 1, indexes.size() );
IndexDefinition index = indexes.iterator().next();
assertEquals( "Label1", single( index.getLabels() ).name() );
assertEquals( asSet( "property1" ), Iterables.asSet( index.getPropertyKeys() ) );
assertTrue( "index should be a constraint index", index.isConstraintIndex() );
// when
try
{
index.drop();
fail( "expected exception" );
}
// then
catch ( IllegalStateException e )
{
assertEquals( "Constraint indexes cannot be dropped directly, " +
"instead drop the owning uniqueness constraint.", e.getMessage() );
}
}
}
@Test
public void shouldListMultiTokenIndexesInTheCoreAPI() throws Exception
{
Transaction transaction = newTransaction( AUTH_DISABLED );
MultiTokenSchemaDescriptor descriptor = SchemaDescriptorFactory.multiToken(
new int[]{labelId, labelId2}, EntityType.NODE, propertyKeyId );
transaction.schemaWrite().indexCreate( descriptor );
commit();
try ( @SuppressWarnings( "unused" ) org.neo4j.graphdb.Transaction tx = db.beginTx() )
{
Set<IndexDefinition> indexes = Iterables.asSet( db.schema().getIndexes() );
// then
assertEquals( 1, indexes.size() );
IndexDefinition index = indexes.iterator().next();
try
{
index.getLabel();
fail( "index.getLabel() should have thrown. ");
}
catch ( IllegalStateException ignore )
{
}
try
{
index.getRelationshipType();
fail( "index.getRelationshipType() should have thrown. ");
}
catch ( IllegalStateException ignore )
{
}
try
{
index.getRelationshipTypes();
fail( "index.getRelationshipTypes() should have thrown. ");
}
catch ( IllegalStateException ignore )
{
}
assertThat( index.getLabels(), containsInAnyOrder( label( LABEL ), label( LABEL2 ) ) );
assertFalse( "should not be a constraint index", index.isConstraintIndex() );
assertTrue( "should be a multi-token index", index.isMultiTokenIndex() );
assertFalse( "should not be a composite index", index.isCompositeIndex() );
assertTrue( "should be a node index", index.isNodeIndex() );
assertFalse( "should not be a relationship index", index.isRelationshipIndex() );
assertEquals( asSet( PROPERTY_KEY ), Iterables.asSet( index.getPropertyKeys() ) );
}
}
@Test
public void shouldListCompositeIndexesInTheCoreAPI() throws Exception
{
Transaction transaction = newTransaction( AUTH_DISABLED );
SchemaDescriptor descriptor = SchemaDescriptorFactory.forLabel( labelId, propertyKeyId, propertyKeyId2 );
transaction.schemaWrite().indexCreate( descriptor );
commit();
try ( @SuppressWarnings( "unused" ) org.neo4j.graphdb.Transaction tx = db.beginTx() )
{
Set<IndexDefinition> indexes = Iterables.asSet( db.schema().getIndexes() );
// then
assertEquals( 1, indexes.size() );
IndexDefinition index = indexes.iterator().next();
assertEquals( LABEL, single( index.getLabels() ).name() );
assertThat( index.getLabels(), containsInAnyOrder( label( LABEL ) ) );
try
{
index.getRelationshipType();
fail( "index.getRelationshipType() should have thrown. ");
}
catch ( IllegalStateException ignore )
{
}
try
{
index.getRelationshipTypes();
fail( "index.getRelationshipTypes() should have thrown. ");
}
catch ( IllegalStateException ignore )
{
}
assertFalse( "should not be a constraint index", index.isConstraintIndex() );
assertFalse( "should not be a multi-token index", index.isMultiTokenIndex() );
assertTrue( "should be a composite index", index.isCompositeIndex() );
assertTrue( "should be a node index", index.isNodeIndex() );
assertFalse( "should not be a relationship index", index.isRelationshipIndex() );
assertEquals( asSet( PROPERTY_KEY, PROPERTY_KEY2 ), Iterables.asSet( index.getPropertyKeys() ) );
}
}
@Test
public void shouldListRelationshipIndexesInTheCoreAPI() throws Exception
{
Transaction transaction = newTransaction( AUTH_DISABLED );
SchemaDescriptor descriptor = SchemaDescriptorFactory.forRelType( relType, propertyKeyId );
transaction.schemaWrite().indexCreate( descriptor );
commit();
try ( org.neo4j.graphdb.Transaction tx = db.beginTx() )
{
Set<IndexDefinition> indexes = Iterables.asSet( db.schema().getIndexes() );
// then
assertEquals( 1, indexes.size() );
IndexDefinition index = indexes.iterator().next();
try
{
index.getLabel();
fail( "index.getLabel() should have thrown. ");
}
catch ( IllegalStateException ignore )
{
}
try
{
index.getLabels();
fail( "index.getLabels() should have thrown. ");
}
catch ( IllegalStateException ignore )
{
}
assertEquals( REL_TYPE, index.getRelationshipType().name() );
assertEquals( singletonList( withName( REL_TYPE ) ), index.getRelationshipTypes() );
assertFalse( "should not be a constraint index", index.isConstraintIndex() );
assertFalse( "should not be a multi-token index", index.isMultiTokenIndex() );
assertFalse( "should not be a composite index", index.isCompositeIndex() );
assertFalse( "should not be a node index", index.isNodeIndex() );
assertTrue( "should be a relationship index", index.isRelationshipIndex() );
assertEquals( asSet( PROPERTY_KEY ), Iterables.asSet( index.getPropertyKeys() ) );
}
}
@Test
public void shouldListCompositeMultiTokenRelationshipIndexesInTheCoreAPI() throws Exception
{
Transaction transaction = newTransaction( AUTH_DISABLED );
SchemaDescriptor descriptor = SchemaDescriptorFactory.multiToken(
new int[]{relType, relType2}, EntityType.RELATIONSHIP, propertyKeyId, propertyKeyId2 );
transaction.schemaWrite().indexCreate( descriptor );
commit();
try ( org.neo4j.graphdb.Transaction tx = db.beginTx() )
{
Set<IndexDefinition> indexes = Iterables.asSet( db.schema().getIndexes() );
// then
assertEquals( 1, indexes.size() );
IndexDefinition index = indexes.iterator().next();
try
{
index.getLabel();
fail( "index.getLabel() should have thrown. ");
}
catch ( IllegalStateException ignore )
{
}
try
{
index.getLabels();
fail( "index.getLabels() should have thrown. ");
}
catch ( IllegalStateException ignore )
{
}
try
{
index.getRelationshipType();
fail( "index.getRelationshipType() should have thrown. ");
}
catch ( IllegalStateException ignore )
{
}
assertThat( index.getRelationshipTypes(), containsInAnyOrder( withName( REL_TYPE ), withName( REL_TYPE2 ) ) );
assertFalse( "should not be a constraint index", index.isConstraintIndex() );
assertTrue( "should be a multi-token index", index.isMultiTokenIndex() );
assertTrue( "should be a composite index", index.isCompositeIndex() );
assertFalse( "should not be a node index", index.isNodeIndex() );
assertTrue( "should be a relationship index", index.isRelationshipIndex() );
assertEquals( asSet( PROPERTY_KEY, PROPERTY_KEY2 ), Iterables.asSet( index.getPropertyKeys() ) );
}
}
@Test
public void shouldListAll() throws Exception
{
// given
SchemaWrite schemaWrite = schemaWriteInNewTransaction();
IndexReference index1 = schemaWrite.indexCreate( descriptor );
IndexReference index2 =
((IndexBackedConstraintDescriptor) schemaWrite.uniquePropertyConstraintCreate( descriptor2 ))
.ownedIndexDescriptor();
commit();
// then/when
SchemaRead schemaRead = newTransaction().schemaRead();
List<IndexReference> indexes = Iterators.asList( schemaRead.indexesGetAll() );
assertThat( indexes, containsInAnyOrder( index1, index2 ) );
commit();
}
private Runnable createIndex( GraphDatabaseAPI db, Label label, String propertyKey )
{
return () ->
{
try ( org.neo4j.graphdb.Transaction transaction = db.beginTx() )
{
db.schema().indexFor( label ).on( propertyKey ).create();
transaction.success();
}
try ( org.neo4j.graphdb.Transaction transaction = db.beginTx() )
{
db.schema().awaitIndexesOnline( 1, TimeUnit.MINUTES );
transaction.success();
}
};
}
}