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CommunityEditionModule.java
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CommunityEditionModule.java
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/*
* Copyright (c) 2002-2016 "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.factory;
import java.io.File;
import org.neo4j.graphdb.DependencyResolver;
import org.neo4j.graphdb.factory.GraphDatabaseSettings;
import org.neo4j.helpers.Service;
import org.neo4j.io.fs.FileSystemAbstraction;
import org.neo4j.io.pagecache.IOLimiter;
import org.neo4j.io.pagecache.PageCache;
import org.neo4j.kernel.DatabaseAvailability;
import org.neo4j.kernel.NeoStoreDataSource;
import org.neo4j.kernel.api.exceptions.KernelException;
import org.neo4j.kernel.builtinprocs.BuiltInProcedures;
import org.neo4j.kernel.configuration.Config;
import org.neo4j.kernel.impl.api.SchemaWriteGuard;
import org.neo4j.kernel.impl.api.index.RemoveOrphanConstraintIndexesOnStartup;
import org.neo4j.kernel.impl.constraints.ConstraintSemantics;
import org.neo4j.kernel.impl.constraints.StandardConstraintSemantics;
import org.neo4j.kernel.impl.core.DefaultLabelIdCreator;
import org.neo4j.kernel.impl.core.DefaultPropertyTokenCreator;
import org.neo4j.kernel.impl.core.DefaultRelationshipTypeCreator;
import org.neo4j.kernel.impl.core.DelegatingLabelTokenHolder;
import org.neo4j.kernel.impl.core.DelegatingPropertyKeyTokenHolder;
import org.neo4j.kernel.impl.core.DelegatingRelationshipTypeTokenHolder;
import org.neo4j.kernel.impl.core.ReadOnlyTokenCreator;
import org.neo4j.kernel.impl.core.TokenCreator;
import org.neo4j.kernel.impl.coreapi.CoreAPIAvailabilityGuard;
import org.neo4j.kernel.impl.locking.Locks;
import org.neo4j.kernel.impl.locking.ResourceTypes;
import org.neo4j.kernel.impl.locking.SimpleStatementLocksFactory;
import org.neo4j.kernel.impl.locking.StatementLocksFactory;
import org.neo4j.kernel.impl.locking.community.CommunityLockManger;
import org.neo4j.kernel.impl.logging.LogService;
import org.neo4j.kernel.impl.proc.Procedures;
import org.neo4j.kernel.impl.store.id.DefaultIdGeneratorFactory;
import org.neo4j.kernel.impl.store.id.IdGeneratorFactory;
import org.neo4j.kernel.impl.store.id.IdReuseEligibility;
import org.neo4j.kernel.impl.store.id.configuration.CommunityIdTypeConfigurationProvider;
import org.neo4j.kernel.impl.store.id.configuration.IdTypeConfigurationProvider;
import org.neo4j.kernel.impl.transaction.TransactionHeaderInformationFactory;
import org.neo4j.kernel.impl.transaction.state.DataSourceManager;
import org.neo4j.kernel.impl.util.JobScheduler;
import org.neo4j.kernel.internal.DefaultKernelData;
import org.neo4j.kernel.internal.GraphDatabaseAPI;
import org.neo4j.kernel.internal.KernelData;
import org.neo4j.kernel.lifecycle.LifeSupport;
import org.neo4j.kernel.lifecycle.LifecycleStatus;
import org.neo4j.udc.UsageData;
/**
* This implementation of {@link org.neo4j.kernel.impl.factory.EditionModule} creates the implementations of services
* that are specific to the Community edition.
*/
public class CommunityEditionModule extends EditionModule
{
public CommunityEditionModule( PlatformModule platformModule )
{
org.neo4j.kernel.impl.util.Dependencies dependencies = platformModule.dependencies;
Config config = platformModule.config;
LogService logging = platformModule.logging;
FileSystemAbstraction fileSystem = platformModule.fileSystem;
PageCache pageCache = platformModule.pageCache;
File storeDir = platformModule.storeDir;
DataSourceManager dataSourceManager = platformModule.dataSourceManager;
LifeSupport life = platformModule.life;
life.add( platformModule.dataSourceManager );
GraphDatabaseFacade graphDatabaseFacade = platformModule.graphDatabaseFacade;
lockManager = dependencies.satisfyDependency( createLockManager( config, logging ) );
statementLocksFactory = createStatementLocksFactory( lockManager, config, logging );
idTypeConfigurationProvider = createIdTypeConfigurationProvider( config );
idGeneratorFactory = dependencies.satisfyDependency( createIdGeneratorFactory( fileSystem, idTypeConfigurationProvider ) );
propertyKeyTokenHolder = life.add( dependencies.satisfyDependency( new DelegatingPropertyKeyTokenHolder(
createPropertyKeyCreator( config, dataSourceManager, idGeneratorFactory ) ) ) );
labelTokenHolder = life.add( dependencies.satisfyDependency(new DelegatingLabelTokenHolder( createLabelIdCreator( config,
dataSourceManager, idGeneratorFactory ) ) ));
relationshipTypeTokenHolder = life.add( dependencies.satisfyDependency(new DelegatingRelationshipTypeTokenHolder(
createRelationshipTypeCreator( config, dataSourceManager, idGeneratorFactory ) ) ));
dependencies.satisfyDependency(
createKernelData( fileSystem, pageCache, storeDir, config, graphDatabaseFacade, life ) );
createAuthManagerLog( config, logging, platformModule.fileSystem, platformModule.jobScheduler );
life.add( dependencies.satisfyDependency( createAuthManager( config, logging,
platformModule.fileSystem, platformModule.jobScheduler ) ) );
commitProcessFactory = new CommunityCommitProcessFactory();
headerInformationFactory = createHeaderInformationFactory();
schemaWriteGuard = createSchemaWriteGuard();
transactionStartTimeout = config.get( GraphDatabaseSettings.transaction_start_timeout );
constraintSemantics = createSchemaRuleVerifier();
coreAPIAvailabilityGuard = new CoreAPIAvailabilityGuard( platformModule.availabilityGuard, transactionStartTimeout );
ioLimiter = IOLimiter.unlimited();
eligibleForIdReuse = IdReuseEligibility.ALWAYS;
registerRecovery( platformModule.databaseInfo, life, dependencies );
publishEditionInfo( dependencies.resolveDependency( UsageData.class ), platformModule.databaseInfo, config );
dependencies.satisfyDependency( createSessionTracker() );
}
protected void createAuthManagerLog( Config config, LogService logging, FileSystemAbstraction fileSystem, JobScheduler
jobScheduler )
{
// no auth manager log in community
}
protected IdTypeConfigurationProvider createIdTypeConfigurationProvider( Config config )
{
return new CommunityIdTypeConfigurationProvider();
}
protected ConstraintSemantics createSchemaRuleVerifier()
{
return new StandardConstraintSemantics();
}
protected StatementLocksFactory createStatementLocksFactory( Locks locks, Config config, LogService logService )
{
return new SimpleStatementLocksFactory( locks );
}
protected SchemaWriteGuard createSchemaWriteGuard()
{
return () -> {};
}
protected TokenCreator createRelationshipTypeCreator( Config config, DataSourceManager dataSourceManager,
IdGeneratorFactory idGeneratorFactory )
{
if ( config.get( GraphDatabaseSettings.read_only ) )
{
return new ReadOnlyTokenCreator();
}
else
{
return new DefaultRelationshipTypeCreator( dataSourceManager, idGeneratorFactory );
}
}
protected TokenCreator createPropertyKeyCreator( Config config, DataSourceManager dataSourceManager,
IdGeneratorFactory idGeneratorFactory )
{
if ( config.get( GraphDatabaseSettings.read_only ) )
{
return new ReadOnlyTokenCreator();
}
else
{
return new DefaultPropertyTokenCreator( dataSourceManager, idGeneratorFactory );
}
}
protected TokenCreator createLabelIdCreator( Config config, DataSourceManager dataSourceManager,
IdGeneratorFactory idGeneratorFactory )
{
if ( config.get( GraphDatabaseSettings.read_only ) )
{
return new ReadOnlyTokenCreator();
}
else
{
return new DefaultLabelIdCreator( dataSourceManager, idGeneratorFactory );
}
}
protected KernelData createKernelData( FileSystemAbstraction fileSystem, PageCache pageCache, File storeDir,
Config config, GraphDatabaseAPI graphAPI, LifeSupport life )
{
return life.add( new DefaultKernelData( fileSystem, pageCache, storeDir, config, graphAPI ) );
}
protected IdGeneratorFactory createIdGeneratorFactory( FileSystemAbstraction fs, IdTypeConfigurationProvider idTypeConfigurationProvider )
{
return new DefaultIdGeneratorFactory( fs, idTypeConfigurationProvider );
}
public static Locks createLockManager( Config config, LogService logging )
{
String key = config.get( GraphDatabaseFacadeFactory.Configuration.lock_manager );
for ( Locks.Factory candidate : Service.load( Locks.Factory.class ) )
{
String candidateId = candidate.getKeys().iterator().next();
if ( candidateId.equals( key ) )
{
return candidate.newInstance( ResourceTypes.values() );
}
else if ( key.equals( "" ) )
{
logging.getInternalLog( CommunityEditionModule.class )
.info( "No locking implementation specified, defaulting to '" + candidateId + "'" );
return candidate.newInstance( ResourceTypes.values() );
}
}
if ( key.equals( "community" ) )
{
return new CommunityLockManger();
}
else if ( key.equals( "" ) )
{
logging.getInternalLog( CommunityEditionModule.class )
.info( "No locking implementation specified, defaulting to 'community'" );
return new CommunityLockManger();
}
throw new IllegalArgumentException( "No lock manager found with the name '" + key + "'." );
}
protected TransactionHeaderInformationFactory createHeaderInformationFactory()
{
return TransactionHeaderInformationFactory.DEFAULT;
}
protected void registerRecovery( final DatabaseInfo databaseInfo, LifeSupport life,
final DependencyResolver dependencyResolver )
{
life.addLifecycleListener( ( instance, from, to ) -> {
if ( instance instanceof DatabaseAvailability && to.equals( LifecycleStatus.STARTED ) )
{
doAfterRecoveryAndStartup( databaseInfo, dependencyResolver );
}
} );
}
@Override
public void setupProcedures( Procedures procedures ) throws KernelException
{
// If you change this, don't forget to update the HA and Core|Edge editions, too
procedures.registerProcedure( org.neo4j.kernel.builtinprocs.BuiltInProcedures.class );
registerProceduresFromProvider( "auth-procedures-provider", procedures );
}
@Override
protected void doAfterRecoveryAndStartup( DatabaseInfo databaseInfo, DependencyResolver dependencyResolver )
{
super.doAfterRecoveryAndStartup( databaseInfo, dependencyResolver );
new RemoveOrphanConstraintIndexesOnStartup( dependencyResolver.resolveDependency( NeoStoreDataSource.class )
.getKernel(), dependencyResolver.resolveDependency( LogService.class ).getInternalLogProvider() ).perform();
}
}