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PlatformModule.java
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PlatformModule.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 java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.function.Supplier;
import org.neo4j.graphdb.DependencyResolver;
import org.neo4j.graphdb.factory.GraphDatabaseSettings;
import org.neo4j.graphdb.security.URLAccessRule;
import org.neo4j.helpers.Clock;
import org.neo4j.helpers.collection.Iterables;
import org.neo4j.io.fs.DefaultFileSystemAbstraction;
import org.neo4j.io.fs.FileSystemAbstraction;
import org.neo4j.io.pagecache.PageCache;
import org.neo4j.kernel.AvailabilityGuard;
import org.neo4j.kernel.internal.StoreLocker;
import org.neo4j.kernel.internal.StoreLockerLifecycleAdapter;
import org.neo4j.kernel.internal.Version;
import org.neo4j.kernel.configuration.Config;
import org.neo4j.kernel.extension.KernelExtensionFactory;
import org.neo4j.kernel.extension.KernelExtensions;
import org.neo4j.kernel.extension.UnsatisfiedDependencyStrategies;
import org.neo4j.kernel.impl.logging.LogService;
import org.neo4j.kernel.impl.logging.StoreLogService;
import org.neo4j.kernel.impl.pagecache.ConfiguringPageCacheFactory;
import org.neo4j.kernel.impl.pagecache.PageCacheLifecycle;
import org.neo4j.kernel.impl.security.URLAccessRules;
import org.neo4j.kernel.impl.spi.SimpleKernelContext;
import org.neo4j.kernel.impl.transaction.TransactionStats;
import org.neo4j.kernel.impl.transaction.state.DataSourceManager;
import org.neo4j.kernel.impl.util.JobScheduler;
import org.neo4j.kernel.impl.util.Neo4jJobScheduler;
import org.neo4j.kernel.info.DiagnosticsManager;
import org.neo4j.kernel.info.JvmChecker;
import org.neo4j.kernel.info.JvmMetadataRepository;
import org.neo4j.kernel.lifecycle.LifeSupport;
import org.neo4j.kernel.monitoring.Monitors;
import org.neo4j.kernel.monitoring.tracing.Tracers;
import org.neo4j.logging.Level;
import org.neo4j.logging.Log;
import org.neo4j.logging.LogProvider;
import org.neo4j.udc.UsageData;
import org.neo4j.udc.UsageDataKeys;
/**
* Platform module for {@link org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory}. This creates
* all the services needed by {@link org.neo4j.kernel.impl.factory.EditionModule} implementations.
*/
public class PlatformModule
{
public final PageCache pageCache;
public final Monitors monitors;
public final GraphDatabaseFacade graphDatabaseFacade;
public final org.neo4j.kernel.impl.util.Dependencies dependencies;
public final LogService logging;
public final LifeSupport life;
public final File storeDir;
public final DatabaseInfo databaseInfo;
public final DiagnosticsManager diagnosticsManager;
public final Tracers tracers;
public final Config config;
public final FileSystemAbstraction fileSystem;
public final DataSourceManager dataSourceManager;
public final KernelExtensions kernelExtensions;
public final URLAccessRule urlAccessRule;
public final JobScheduler jobScheduler;
public final AvailabilityGuard availabilityGuard;
public final TransactionStats transactionMonitor;
public PlatformModule( File providedStoreDir, Map<String, String> params, DatabaseInfo databaseInfo,
GraphDatabaseFacadeFactory.Dependencies externalDependencies, GraphDatabaseFacade graphDatabaseFacade )
{
this.databaseInfo = databaseInfo;
dependencies = new org.neo4j.kernel.impl.util.Dependencies( new Supplier<DependencyResolver>()
{
@Override
public DependencyResolver get()
{
return dataSourceManager.getDataSource().getDependencyResolver();
}
} );
life = dependencies.satisfyDependency( createLife() );
this.graphDatabaseFacade = dependencies.satisfyDependency( graphDatabaseFacade );
// SPI - provided services
config = dependencies.satisfyDependency( new Config( params, getSettingsClasses(
externalDependencies.settingsClasses(), externalDependencies.kernelExtensions() ) ) );
this.storeDir = providedStoreDir.getAbsoluteFile();
// Database system information, used by UDC
dependencies.satisfyDependency( new UsageData() );
fileSystem = dependencies.satisfyDependency( createFileSystemAbstraction() );
// Component monitoring
monitors = externalDependencies.monitors() == null ? new Monitors() : externalDependencies.monitors();
dependencies.satisfyDependency( monitors );
jobScheduler = life.add( dependencies.satisfyDependency( createJobScheduler() ) );
// If no logging was passed in from the outside then create logging and register
// with this life
logging = dependencies.satisfyDependency( createLogService( externalDependencies.userLogProvider() ) );
config.setLogger( logging.getInternalLog( Config.class ) );
life.add( dependencies.satisfyDependency( new StoreLockerLifecycleAdapter( new StoreLocker( fileSystem ), storeDir ) ));
new JvmChecker( logging.getInternalLog( JvmChecker.class ),
new JvmMetadataRepository() ).checkJvmCompatibilityAndIssueWarning();
String desiredImplementationName = config.get( GraphDatabaseFacadeFactory.Configuration.tracer );
tracers = dependencies.satisfyDependency( new Tracers( desiredImplementationName,
logging.getInternalLog( Tracers.class ), monitors, jobScheduler ) );
dependencies.satisfyDependency( tracers.pageCacheTracer );
dependencies.satisfyDependency( tracers.transactionTracer );
dependencies.satisfyDependency( tracers.checkPointTracer );
pageCache = dependencies.satisfyDependency( createPageCache( fileSystem, config, logging, tracers ) );
life.add( new PageCacheLifecycle( pageCache ) );
diagnosticsManager = life.add( dependencies.satisfyDependency( new DiagnosticsManager( logging.getInternalLog(
DiagnosticsManager.class ) ) ) );
// TODO please fix the bad dependencies instead of doing this. Before the removal of JTA
// this was the place of the XaDataSourceManager. NeoStoreXaDataSource is create further down than
// (specifically) KernelExtensions, which creates an interesting out-of-order issue with #doAfterRecovery().
// Anyways please fix this.
dataSourceManager = dependencies.satisfyDependency( new DataSourceManager() );
availabilityGuard = new AvailabilityGuard( Clock.SYSTEM_CLOCK, logging.getInternalLog(
AvailabilityGuard.class ) );
transactionMonitor = dependencies.satisfyDependency( createTransactionStats() );
kernelExtensions = dependencies.satisfyDependency( new KernelExtensions(
new SimpleKernelContext( fileSystem, storeDir, databaseInfo ),
externalDependencies.kernelExtensions(),
dependencies,
UnsatisfiedDependencyStrategies.fail() ) );
urlAccessRule = dependencies.satisfyDependency( URLAccessRules.combined( externalDependencies.urlAccessRules() ) );
publishPlatformInfo( dependencies.resolveDependency( UsageData.class ) );
}
private void publishPlatformInfo( UsageData sysInfo )
{
sysInfo.set( UsageDataKeys.version, Version.getKernel().getReleaseVersion() );
sysInfo.set( UsageDataKeys.revision, Version.getKernel().getVersion() );
}
public LifeSupport createLife()
{
return new LifeSupport();
}
protected FileSystemAbstraction createFileSystemAbstraction()
{
return new DefaultFileSystemAbstraction();
}
protected LogService createLogService( LogProvider userLogProvider )
{
long internalLogRotationThreshold = config.get( GraphDatabaseSettings.store_internal_log_rotation_threshold );
long internalLogRotationDelay = config.get( GraphDatabaseSettings.store_internal_log_rotation_delay );
int internalLogMaxArchives = config.get( GraphDatabaseSettings.store_internal_log_max_archives );
final StoreLogService.Builder builder =
StoreLogService.withRotation( internalLogRotationThreshold, internalLogRotationDelay,
internalLogMaxArchives, jobScheduler );
if ( userLogProvider != null )
{
builder.withUserLogProvider( userLogProvider );
}
builder.withRotationListener(
logProvider -> diagnosticsManager.dumpAll( logProvider.getLog( DiagnosticsManager.class ) ) );
for ( String debugContext : config.get( GraphDatabaseSettings.store_internal_debug_contexts ) )
{
builder.withLevel( debugContext, Level.DEBUG );
}
builder.withDefaultLevel( config.get( GraphDatabaseSettings.store_internal_log_level ) );
File internalLog = config.get( GraphDatabaseSettings.store_internal_log_location );
StoreLogService logService;
try
{
if ( internalLog == null )
{
logService = builder.inStoreDirectory( fileSystem, storeDir );
}
else
{
logService = builder.toFile( fileSystem, internalLog );
}
}
catch ( IOException ex )
{
throw new RuntimeException( ex );
}
return life.add( logService );
}
protected Neo4jJobScheduler createJobScheduler()
{
return new Neo4jJobScheduler();
}
protected PageCache createPageCache( FileSystemAbstraction fileSystem,
Config config,
LogService logging,
Tracers tracers )
{
Log pageCacheLog = logging.getInternalLog( PageCache.class );
ConfiguringPageCacheFactory pageCacheFactory = new ConfiguringPageCacheFactory(
fileSystem, config, tracers.pageCacheTracer, pageCacheLog );
PageCache pageCache = pageCacheFactory.getOrCreatePageCache();
if ( config.get( GraphDatabaseSettings.dump_configuration ) )
{
pageCacheFactory.dumpConfiguration();
}
return pageCache;
}
protected TransactionStats createTransactionStats()
{
return new TransactionStats();
}
private Iterable<Class<?>> getSettingsClasses( Iterable<Class<?>> settingsClasses,
Iterable<KernelExtensionFactory<?>> kernelExtensions )
{
List<Class<?>> totalSettingsClasses = Iterables.toList( settingsClasses );
// Get the list of settings classes for extensions
for ( KernelExtensionFactory<?> kernelExtension : kernelExtensions )
{
Class<?> settingsClass = kernelExtension.getSettingsClass();
if ( settingsClass != null )
{
totalSettingsClasses.add( settingsClass );
}
}
return totalSettingsClasses;
}
}