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NeoStoreDataSource.java
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NeoStoreDataSource.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.kernel;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.locks.LockSupport;
import java.util.function.Supplier;
import org.neo4j.function.Factory;
import org.neo4j.graphdb.DependencyResolver;
import org.neo4j.graphdb.ResourceIterator;
import org.neo4j.graphdb.config.Setting;
import org.neo4j.graphdb.factory.GraphDatabaseSettings;
import org.neo4j.graphdb.index.IndexImplementation;
import org.neo4j.graphdb.index.IndexProviders;
import org.neo4j.helpers.Clock;
import org.neo4j.helpers.Exceptions;
import org.neo4j.helpers.collection.Visitor;
import org.neo4j.io.fs.FileSystemAbstraction;
import org.neo4j.io.pagecache.PageCache;
import org.neo4j.kernel.api.KernelAPI;
import org.neo4j.kernel.api.TokenNameLookup;
import org.neo4j.kernel.api.index.SchemaIndexProvider;
import org.neo4j.kernel.api.labelscan.LabelScanStore;
import org.neo4j.kernel.configuration.Config;
import org.neo4j.kernel.guard.Guard;
import org.neo4j.kernel.impl.api.CommitProcessFactory;
import org.neo4j.kernel.impl.api.ConstraintEnforcingEntityOperations;
import org.neo4j.kernel.impl.api.DataIntegrityValidatingStatementOperations;
import org.neo4j.kernel.impl.api.GuardingStatementOperations;
import org.neo4j.kernel.impl.api.Kernel;
import org.neo4j.kernel.impl.api.KernelSchemaStateStore;
import org.neo4j.kernel.impl.api.KernelTransactions;
import org.neo4j.kernel.impl.api.LegacyIndexApplierLookup;
import org.neo4j.kernel.impl.api.LegacyIndexProviderLookup;
import org.neo4j.kernel.impl.api.LegacyPropertyTrackers;
import org.neo4j.kernel.impl.api.LockingStatementOperations;
import org.neo4j.kernel.impl.api.RecoveryLegacyIndexApplierLookup;
import org.neo4j.kernel.impl.api.SchemaStateConcern;
import org.neo4j.kernel.impl.api.SchemaWriteGuard;
import org.neo4j.kernel.impl.api.StateHandlingStatementOperations;
import org.neo4j.kernel.impl.api.StatementOperationParts;
import org.neo4j.kernel.impl.api.TransactionCommitProcess;
import org.neo4j.kernel.impl.api.TransactionHooks;
import org.neo4j.kernel.impl.api.TransactionRepresentationStoreApplier;
import org.neo4j.kernel.impl.api.UpdateableSchemaState;
import org.neo4j.kernel.impl.api.index.IndexUpdateMode;
import org.neo4j.kernel.impl.api.index.IndexUpdatesValidator;
import org.neo4j.kernel.impl.api.index.IndexingService;
import org.neo4j.kernel.impl.api.index.OnlineIndexUpdatesValidator;
import org.neo4j.kernel.impl.api.index.RecoveryIndexingUpdatesValidator;
import org.neo4j.kernel.impl.api.index.SchemaIndexProviderMap;
import org.neo4j.kernel.impl.api.index.sampling.IndexSamplingConfig;
import org.neo4j.kernel.impl.api.scan.LabelScanStoreProvider;
import org.neo4j.kernel.impl.api.state.ConstraintIndexCreator;
import org.neo4j.kernel.impl.api.store.CacheLayer;
import org.neo4j.kernel.impl.api.store.DiskLayer;
import org.neo4j.kernel.impl.api.store.ProcedureCache;
import org.neo4j.kernel.impl.api.store.SchemaCache;
import org.neo4j.kernel.impl.api.store.StoreReadLayer;
import org.neo4j.kernel.impl.api.store.StoreStatement;
import org.neo4j.kernel.impl.cache.BridgingCacheAccess;
import org.neo4j.kernel.impl.constraints.ConstraintSemantics;
import org.neo4j.kernel.impl.core.CacheAccessBackDoor;
import org.neo4j.kernel.impl.core.LabelTokenHolder;
import org.neo4j.kernel.impl.core.NodeManager;
import org.neo4j.kernel.impl.core.PropertyKeyTokenHolder;
import org.neo4j.kernel.impl.core.RelationshipTypeTokenHolder;
import org.neo4j.kernel.impl.core.StartupStatisticsProvider;
import org.neo4j.kernel.impl.factory.GraphDatabaseFacadeFactory;
import org.neo4j.kernel.impl.index.IndexConfigStore;
import org.neo4j.kernel.impl.index.LegacyIndexStore;
import org.neo4j.kernel.impl.locking.LockService;
import org.neo4j.kernel.impl.locking.Locks;
import org.neo4j.kernel.impl.locking.ReentrantLockService;
import org.neo4j.kernel.impl.store.MetaDataStore;
import org.neo4j.kernel.impl.store.NeoStores;
import org.neo4j.kernel.impl.store.SchemaStorage;
import org.neo4j.kernel.impl.store.StoreFactory;
import org.neo4j.kernel.impl.store.StoreId;
import org.neo4j.kernel.impl.store.UnderlyingStorageException;
import org.neo4j.kernel.impl.store.record.SchemaRule;
import org.neo4j.kernel.impl.storemigration.StoreUpgrader;
import org.neo4j.kernel.impl.storemigration.StoreVersionCheck;
import org.neo4j.kernel.impl.storemigration.UpgradableDatabase;
import org.neo4j.kernel.impl.storemigration.legacystore.LegacyStoreVersionCheck;
import org.neo4j.kernel.impl.transaction.TransactionHeaderInformationFactory;
import org.neo4j.kernel.impl.transaction.TransactionMonitor;
import org.neo4j.kernel.impl.transaction.log.BatchingTransactionAppender;
import org.neo4j.kernel.impl.transaction.log.LogFile;
import org.neo4j.kernel.impl.transaction.log.LogFileInformation;
import org.neo4j.kernel.impl.transaction.log.LogFileRecoverer;
import org.neo4j.kernel.impl.transaction.log.LogPosition;
import org.neo4j.kernel.impl.transaction.log.LogVersionedStoreChannel;
import org.neo4j.kernel.impl.transaction.log.LoggingLogFileMonitor;
import org.neo4j.kernel.impl.transaction.log.LogicalTransactionStore;
import org.neo4j.kernel.impl.transaction.log.PhysicalLogFile;
import org.neo4j.kernel.impl.transaction.log.PhysicalLogFileInformation;
import org.neo4j.kernel.impl.transaction.log.PhysicalLogFiles;
import org.neo4j.kernel.impl.transaction.log.PhysicalLogicalTransactionStore;
import org.neo4j.kernel.impl.transaction.log.ReadableLogChannel;
import org.neo4j.kernel.impl.transaction.log.ReadableVersionableLogChannel;
import org.neo4j.kernel.impl.transaction.log.TransactionAppender;
import org.neo4j.kernel.impl.transaction.log.TransactionMetadataCache;
import org.neo4j.kernel.impl.transaction.log.checkpoint.CheckPointScheduler;
import org.neo4j.kernel.impl.transaction.log.checkpoint.CheckPointThreshold;
import org.neo4j.kernel.impl.transaction.log.checkpoint.CheckPointThresholds;
import org.neo4j.kernel.impl.transaction.log.checkpoint.CheckPointer;
import org.neo4j.kernel.impl.transaction.log.checkpoint.CheckPointerImpl;
import org.neo4j.kernel.impl.transaction.log.checkpoint.CountCommittedTransactionThreshold;
import org.neo4j.kernel.impl.transaction.log.checkpoint.SimpleTriggerInfo;
import org.neo4j.kernel.impl.transaction.log.checkpoint.TimeCheckPointThreshold;
import org.neo4j.kernel.impl.transaction.log.entry.LogEntry;
import org.neo4j.kernel.impl.transaction.log.entry.LogEntryReader;
import org.neo4j.kernel.impl.transaction.log.entry.LogEntryStart;
import org.neo4j.kernel.impl.transaction.log.entry.LogHeader;
import org.neo4j.kernel.impl.transaction.log.entry.VersionAwareLogEntryReader;
import org.neo4j.kernel.impl.transaction.log.pruning.LogPruneStrategy;
import org.neo4j.kernel.impl.transaction.log.pruning.LogPruning;
import org.neo4j.kernel.impl.transaction.log.pruning.LogPruningImpl;
import org.neo4j.kernel.impl.transaction.log.rotation.LogRotation;
import org.neo4j.kernel.impl.transaction.log.rotation.LogRotationImpl;
import org.neo4j.kernel.impl.transaction.log.rotation.StoreFlusher;
import org.neo4j.kernel.impl.transaction.state.DefaultSchemaIndexProviderMap;
import org.neo4j.kernel.impl.transaction.state.IntegrityValidator;
import org.neo4j.kernel.impl.transaction.state.NeoStoreFileListing;
import org.neo4j.kernel.impl.transaction.state.NeoStoreIndexStoreView;
import org.neo4j.kernel.impl.transaction.state.NeoStoreTransactionContextFactory;
import org.neo4j.kernel.impl.transaction.state.NeoStoresSupplier;
import org.neo4j.kernel.impl.transaction.state.PropertyLoader;
import org.neo4j.kernel.impl.transaction.state.RecoveryVisitor;
import org.neo4j.kernel.impl.util.Dependencies;
import org.neo4j.kernel.impl.util.IdOrderingQueue;
import org.neo4j.kernel.impl.util.JobScheduler;
import org.neo4j.kernel.impl.util.SynchronizedArrayIdOrderingQueue;
import org.neo4j.kernel.info.DiagnosticsExtractor;
import org.neo4j.kernel.info.DiagnosticsManager;
import org.neo4j.kernel.info.DiagnosticsPhase;
import org.neo4j.kernel.lifecycle.LifeSupport;
import org.neo4j.kernel.lifecycle.Lifecycle;
import org.neo4j.kernel.lifecycle.LifecycleAdapter;
import org.neo4j.kernel.lifecycle.Lifecycles;
import org.neo4j.kernel.monitoring.Monitors;
import org.neo4j.kernel.monitoring.tracing.Tracers;
import org.neo4j.kernel.recovery.DefaultRecoverySPI;
import org.neo4j.kernel.recovery.LatestCheckPointFinder;
import org.neo4j.kernel.recovery.Recovery;
import org.neo4j.logging.Log;
import org.neo4j.logging.LogProvider;
import org.neo4j.logging.Logger;
import org.neo4j.unsafe.batchinsert.LabelScanWriter;
import static org.neo4j.helpers.Settings.BOOLEAN;
import static org.neo4j.helpers.Settings.TRUE;
import static org.neo4j.helpers.Settings.setting;
import static org.neo4j.helpers.collection.Iterables.toList;
import static org.neo4j.kernel.impl.locking.LockService.NO_LOCK_SERVICE;
import static org.neo4j.kernel.impl.transaction.log.pruning.LogPruneStrategyFactory.fromConfigValue;
public class NeoStoreDataSource implements NeoStoresSupplier, Lifecycle, IndexProviders
{
private interface CacheModule
{
UpdateableSchemaState updateableSchemaState();
ProcedureCache procedureCache();
}
private interface StoreLayerModule
{
StoreReadLayer storeLayer();
NeoStores neoStores();
MetaDataStore metaDataStore();
// TODO encapsulate the indexing methods
IndexingService indexingService();
IndexUpdatesValidator indexUpdatesValidator();
LabelScanStore labelScanStore();
IntegrityValidator integrityValidator();
SchemaIndexProviderMap schemaIndexProviderMap();
CacheAccessBackDoor cacheAccess();
void loadSchemaCache();
}
private interface TransactionLogModule
{
TransactionRepresentationStoreApplier storeApplier();
LogicalTransactionStore logicalTransactionStore();
PhysicalLogFiles logFiles();
LogFileInformation logFileInformation();
LogFile logFile();
StoreFlusher storeFlusher();
LogRotation logRotation();
CheckPointer checkPointing();
TransactionAppender transactionAppender();
IdOrderingQueue legacyIndexTransactionOrderingQueue();
}
private interface KernelModule
{
TransactionCommitProcess transactionCommitProcess();
KernelTransactions kernelTransactions();
KernelAPI kernelAPI();
NeoStoreFileListing fileListing();
}
enum Diagnostics implements DiagnosticsExtractor<NeoStoreDataSource>
{
NEO_STORE_VERSIONS( "Store versions:" )
{
@Override
void dump( NeoStoreDataSource source, Logger logger )
{
source.storeLayerModule.neoStores().logVersions( logger );
}
},
NEO_STORE_ID_USAGE( "Id usage:" )
{
@Override
void dump( NeoStoreDataSource source, Logger logger )
{
source.storeLayerModule.neoStores().logIdUsage( logger );
}
},
NEO_STORE_RECORDS( "Neostore records:" )
{
@Override
void dump( NeoStoreDataSource source, Logger log )
{
source.storeLayerModule.neoStores().getMetaDataStore().logRecords( log );
}
},
TRANSACTION_RANGE( "Transaction log:" )
{
@Override
void dump( NeoStoreDataSource source, Logger log )
{
PhysicalLogFiles logFiles =
source.getDependencyResolver().resolveDependency( PhysicalLogFiles.class );
try
{
for ( long logVersion = logFiles.getLowestLogVersion();
logFiles.versionExists( logVersion ); logVersion++ )
{
if ( logFiles.hasAnyTransaction( logVersion ) )
{
LogHeader header = logFiles.extractHeader( logVersion );
long firstTransactionIdInThisLog = header.lastCommittedTxId + 1;
log.log( "Oldest transaction " + firstTransactionIdInThisLog +
" found in log with version " + logVersion );
return;
}
}
log.log( "No transactions found in any log" );
}
catch ( IOException e )
{ // It's fine, we just tried to be nice and log this. Failing is OK
log.log( "Error trying to figure out oldest transaction in log" );
}
}
};
private final String message;
Diagnostics( String message )
{
this.message = message;
}
@Override
public void dumpDiagnostics( final NeoStoreDataSource source, DiagnosticsPhase phase, Logger logger )
{
if ( applicable( phase ) )
{
logger.log( message );
dump( source, logger );
}
}
boolean applicable( DiagnosticsPhase phase )
{
return phase.isInitialization() || phase.isExplicitlyRequested();
}
abstract void dump( NeoStoreDataSource source, Logger logger );
}
public static final String DEFAULT_DATA_SOURCE_NAME = "nioneodb";
/**
* This setting is hidden to the user and is here merely for making it easier to back out of
* a change where reading property chains incurs read locks on {@link LockService}.
*/
private static final Setting<Boolean> use_read_locks_on_property_reads =
setting( "experimental.use_read_locks_on_property_reads", BOOLEAN, TRUE );
private final Monitors monitors;
private final Tracers tracers;
private final Log msgLog;
private final LogProvider logProvider;
private final DependencyResolver dependencyResolver;
private final TokenNameLookup tokenNameLookup;
private final PropertyKeyTokenHolder propertyKeyTokenHolder;
private final LabelTokenHolder labelTokens;
private final RelationshipTypeTokenHolder relationshipTypeTokens;
private final Locks locks;
private final SchemaWriteGuard schemaWriteGuard;
private final TransactionEventHandlers transactionEventHandlers;
private final IdGeneratorFactory idGeneratorFactory;
private final JobScheduler scheduler;
private final Config config;
private final LockService lockService;
private final IndexingService.Monitor indexingServiceMonitor;
private final FileSystemAbstraction fs;
private final StoreUpgrader storeMigrationProcess;
private final TransactionMonitor transactionMonitor;
private final KernelHealth kernelHealth;
private final PhysicalLogFile.Monitor physicalLogMonitor;
private final TransactionHeaderInformationFactory transactionHeaderInformationFactory;
private final StartupStatisticsProvider startupStatistics;
private final NodeManager nodeManager;
private final CommitProcessFactory commitProcessFactory;
private final PageCache pageCache;
private final AtomicInteger recoveredCount = new AtomicInteger();
private final Guard guard;
private final Map<String,IndexImplementation> indexProviders = new HashMap<>();
private final LegacyIndexProviderLookup legacyIndexProviderLookup;
private final IndexConfigStore indexConfigStore;
private final ConstraintSemantics constraintSemantics;
private Dependencies dependencies;
private LifeSupport life;
private SchemaIndexProvider indexProvider;
private File storeDir;
private boolean readOnly;
private CacheModule cacheModule;
private StoreLayerModule storeLayerModule;
private TransactionLogModule transactionLogModule;
private KernelModule kernelModule;
/**
* Creates a <CODE>NeoStoreXaDataSource</CODE> using configuration from
* <CODE>params</CODE>. First the map is checked for the parameter
* <CODE>config</CODE>.
* If that parameter exists a config file with that value is loaded (via
* {@link Properties#load}). Any parameter that exist in the config file
* and in the map passed into this constructor will take the value from the
* map.
* <p>
* If <CODE>config</CODE> parameter is set but file doesn't exist an
* <CODE>IOException</CODE> is thrown. If any problem is found with that
* configuration file or Neo4j store can't be loaded an <CODE>IOException is
* thrown</CODE>.
* <p>
* Note that the tremendous number of dependencies for this class, clearly, is an architecture smell. It is part
* of the ongoing work on introducing the Kernel API, where components that were previously spread throughout the
* core API are now slowly accumulating in the Kernel implementation. Over time, these components should be
* refactored into bigger components that wrap the very granular things we depend on here.
*/
public NeoStoreDataSource( File storeDir, Config config, IdGeneratorFactory idGeneratorFactory, LogProvider logProvider,
JobScheduler scheduler, TokenNameLookup tokenNameLookup, DependencyResolver dependencyResolver,
PropertyKeyTokenHolder propertyKeyTokens, LabelTokenHolder labelTokens,
RelationshipTypeTokenHolder relationshipTypeTokens, Locks lockManager,
SchemaWriteGuard schemaWriteGuard, TransactionEventHandlers transactionEventHandlers,
IndexingService.Monitor indexingServiceMonitor, FileSystemAbstraction fs,
StoreUpgrader storeMigrationProcess, TransactionMonitor transactionMonitor,
KernelHealth kernelHealth, PhysicalLogFile.Monitor physicalLogMonitor,
TransactionHeaderInformationFactory transactionHeaderInformationFactory,
StartupStatisticsProvider startupStatistics,
NodeManager nodeManager, Guard guard,
IndexConfigStore indexConfigStore, CommitProcessFactory commitProcessFactory,
PageCache pageCache,
ConstraintSemantics constraintSemantics,
Monitors monitors,
Tracers tracers )
{
this.storeDir = storeDir;
this.config = config;
this.tokenNameLookup = tokenNameLookup;
this.dependencyResolver = dependencyResolver;
this.scheduler = scheduler;
this.logProvider = logProvider;
this.propertyKeyTokenHolder = propertyKeyTokens;
this.labelTokens = labelTokens;
this.relationshipTypeTokens = relationshipTypeTokens;
this.locks = lockManager;
this.schemaWriteGuard = schemaWriteGuard;
this.transactionEventHandlers = transactionEventHandlers;
this.indexingServiceMonitor = indexingServiceMonitor;
this.fs = fs;
this.storeMigrationProcess = storeMigrationProcess;
this.transactionMonitor = transactionMonitor;
this.kernelHealth = kernelHealth;
this.physicalLogMonitor = physicalLogMonitor;
this.transactionHeaderInformationFactory = transactionHeaderInformationFactory;
this.startupStatistics = startupStatistics;
this.nodeManager = nodeManager;
this.guard = guard;
this.indexConfigStore = indexConfigStore;
this.constraintSemantics = constraintSemantics;
this.monitors = monitors;
this.tracers = tracers;
readOnly = config.get( Configuration.read_only );
msgLog = logProvider.getLog( getClass() );
this.idGeneratorFactory = idGeneratorFactory;
this.lockService = new ReentrantLockService();
this.legacyIndexProviderLookup = new LegacyIndexProviderLookup()
{
@Override
public IndexImplementation apply( String name )
{
assert name != null : "Null provider name supplied";
IndexImplementation provider = indexProviders.get( name );
if ( provider == null )
{
throw new IllegalArgumentException( "No index provider '" + name +
"' found. Maybe the intended provider (or one more of its " +
"dependencies) " +
"aren't on the classpath or it failed to load." );
}
return provider;
}
@Override
public Iterable<IndexImplementation> all()
{
return indexProviders.values();
}
};
this.commitProcessFactory = commitProcessFactory;
this.pageCache = pageCache;
}
@Override
public void init()
{ // We do our own internal life management:
// start() does life.init() and life.start(),
// stop() does life.stop() and life.shutdown().
}
@Override
public void start() throws IOException
{
dependencies = new Dependencies();
life = new LifeSupport();
indexProvider = dependencyResolver.resolveDependency( SchemaIndexProvider.class,
SchemaIndexProvider.HIGHEST_PRIORITIZED_OR_NONE );
dependencies.satisfyDependency( lockService );
// Monitor listeners
LoggingLogFileMonitor loggingLogMonitor = new LoggingLogFileMonitor( msgLog );
monitors.addMonitorListener( loggingLogMonitor );
monitors.addMonitorListener( (RecoveryVisitor.Monitor) txId -> recoveredCount.incrementAndGet() );
life.add( new Lifecycle.Delegate( Lifecycles.multiple( indexProviders.values() ) ) );
// Upgrade the store before we begin
upgradeStore( storeDir, storeMigrationProcess, indexProvider );
// Build all modules and their services
StoreLayerModule storeLayerModule = null;
try
{
LegacyIndexApplierLookup legacyIndexApplierLookup =
dependencies.satisfyDependency( new LegacyIndexApplierLookup.Direct( legacyIndexProviderLookup ) );
CacheModule cacheModule = buildCaches(
labelTokens, relationshipTypeTokens, propertyKeyTokenHolder );
// TODO Introduce a StorageEngine abstraction at the StoreLayerModule boundary
storeLayerModule = buildStoreLayer(
propertyKeyTokenHolder, labelTokens, relationshipTypeTokens, cacheModule,
cacheModule.updateableSchemaState()::clear );
TransactionLogModule transactionLogModule =
buildTransactionLogs( storeDir, config, logProvider, scheduler, storeLayerModule.labelScanStore(),
fs, storeLayerModule.neoStores(), storeLayerModule.cacheAccess(), storeLayerModule.indexingService(),
indexProviders.values(), legacyIndexApplierLookup );
buildRecovery( fs, storeLayerModule.cacheAccess(), storeLayerModule.indexingService(),
storeLayerModule.labelScanStore(), storeLayerModule.neoStores(),
monitors.newMonitor( RecoveryVisitor.Monitor.class ), monitors.newMonitor( Recovery.Monitor.class ),
transactionLogModule.logFiles(), transactionLogModule.storeFlusher(), startupStatistics,
legacyIndexApplierLookup );
KernelModule kernelModule = buildKernel( storeLayerModule.integrityValidator(),
transactionLogModule.transactionAppender(), storeLayerModule.neoStores(),
transactionLogModule.storeApplier(), storeLayerModule.indexingService(),
storeLayerModule.indexUpdatesValidator(),
storeLayerModule.storeLayer(),
cacheModule.updateableSchemaState(), storeLayerModule.labelScanStore(),
storeLayerModule.schemaIndexProviderMap(), cacheModule.procedureCache() );
// Do these assignments last so that we can ensure no cyclical dependencies exist
this.cacheModule = cacheModule;
this.storeLayerModule = storeLayerModule;
this.transactionLogModule = transactionLogModule;
this.kernelModule = kernelModule;
dependencies.satisfyDependency( this );
satisfyDependencies( cacheModule, storeLayerModule, transactionLogModule,
kernelModule );
}
catch ( Throwable e )
{
// Something unexpected happened during startup
msgLog.warn( "Exception occurred while setting up store modules. Attempting to close things down.",
e, true );
try
{
// Close the neostore, so that locks are released properly
if ( storeLayerModule != null )
{
storeLayerModule.neoStores().close();
}
}
catch ( Exception closeException )
{
msgLog.error( "Couldn't close neostore after startup failure" );
}
throw Exceptions.launderedException( e );
}
try
{
life.start();
}
catch ( Throwable e )
{
// Something unexpected happened during startup
msgLog.warn( "Exception occurred while starting the datasource. Attempting to close things down.",
e, true );
try
{
// Close the neostore, so that locks are released properly
storeLayerModule.neoStores().close();
}
catch ( Exception closeException )
{
msgLog.error( "Couldn't close neostore after startup failure" );
}
throw Exceptions.launderedException( e );
}
/*
* At this point recovery has completed and the datasource is ready for use. Whatever panic might have
* happened before has been healed. So we can safely set the kernel health to ok.
* This right now has any real effect only in the case of internal restarts (for example, after a store copy
* in the case of HA). Standalone instances will have to be restarted by the user, as is proper for all
* kernel panics.
*/
kernelHealth.healed();
}
// Startup sequence
// By doing this sequence of method calls we can ensure that no dependency cycles exist, and get a clearer view
// of the dependency tree, starting at the bottom
private void upgradeStore( File storeDir, StoreUpgrader storeMigrationProcess, SchemaIndexProvider indexProvider )
{
UpgradableDatabase upgradableDatabase =
new UpgradableDatabase( new StoreVersionCheck( pageCache ), new LegacyStoreVersionCheck( fs ) );
storeMigrationProcess
.addParticipant( indexProvider.storeMigrationParticipant( fs, pageCache ) );
storeMigrationProcess.migrateIfNeeded( storeDir, upgradableDatabase, indexProvider );
}
private CacheModule buildCaches( LabelTokenHolder labelTokens, RelationshipTypeTokenHolder relationshipTypeTokens,
PropertyKeyTokenHolder propertyKeyTokenHolder )
{
final UpdateableSchemaState updateableSchemaState = new KernelSchemaStateStore( logProvider );
final ProcedureCache procedureCache = new ProcedureCache();
life.add( new LifecycleAdapter()
{
@Override
public void start() throws Throwable
{
storeLayerModule.loadSchemaCache();
}
@Override
public void stop() throws Throwable
{
}
} );
return new CacheModule()
{
@Override
public ProcedureCache procedureCache()
{
return procedureCache;
}
@Override
public UpdateableSchemaState updateableSchemaState()
{
return updateableSchemaState;
}
};
}
private StoreLayerModule buildStoreLayer(
PropertyKeyTokenHolder propertyKeyTokenHolder, LabelTokenHolder labelTokens,
RelationshipTypeTokenHolder relationshipTypeTokens,
CacheModule cacheModule, Runnable schemaStateChangeCallback )
{
life.add( new LifecycleAdapter()
{
@Override
public void start() throws IOException
{
storeLayerModule.neoStores().makeStoreOk();
propertyKeyTokenHolder.setInitialTokens(
storeLayerModule.neoStores().getPropertyKeyTokenStore().getTokens( Integer.MAX_VALUE ) );
relationshipTypeTokens.setInitialTokens(
storeLayerModule.neoStores().getRelationshipTypeTokenStore().getTokens( Integer.MAX_VALUE ) );
labelTokens.setInitialTokens(
storeLayerModule.neoStores().getLabelTokenStore().getTokens( Integer.MAX_VALUE ) );
storeLayerModule.neoStores().rebuildCountStoreIfNeeded(); // TODO: move this to counts store lifecycle
}
} );
final StoreFactory storeFactory = new StoreFactory( storeDir, config, idGeneratorFactory, pageCache, fs, logProvider );
final NeoStores neoStores = storeFactory.openAllNeoStores( true );
final DefaultSchemaIndexProviderMap providerMap;
final IndexingService indexingService;
final IntegrityValidator integrityValidator;
final IndexUpdatesValidator indexUpdatesValidator;
final LabelScanStore labelScanStore;
final SchemaCache schemaCache;
final CacheAccessBackDoor cacheAccess;
final StoreReadLayer storeLayer;
try
{
providerMap = new DefaultSchemaIndexProviderMap( indexProvider );
indexingService = IndexingService.create(
new IndexSamplingConfig( config ), scheduler, providerMap,
new NeoStoreIndexStoreView( lockService, neoStores ), tokenNameLookup,
toList( new SchemaStorage( neoStores.getSchemaStore() ).allIndexRules() ), logProvider,
indexingServiceMonitor, schemaStateChangeCallback );
integrityValidator = new IntegrityValidator( neoStores, indexingService );
indexUpdatesValidator = dependencies.satisfyDependency(
new OnlineIndexUpdatesValidator( neoStores, kernelHealth, new PropertyLoader( neoStores ),
indexingService, IndexUpdateMode.ONLINE ) );
// TODO Move to constructor
labelScanStore = dependencyResolver.resolveDependency( LabelScanStoreProvider.class,
LabelScanStoreProvider.HIGHEST_PRIORITIZED ).getLabelScanStore();
life.add( indexingService );
life.add( labelScanStore );
schemaCache = new SchemaCache( constraintSemantics, Collections.<SchemaRule>emptyList() );
cacheAccess = new BridgingCacheAccess( schemaCache, schemaStateChangeCallback,
propertyKeyTokenHolder, relationshipTypeTokens, labelTokens );
ProcedureCache procedureCache = cacheModule.procedureCache();
SchemaStorage schemaStorage = new SchemaStorage( neoStores.getSchemaStore() );
DiskLayer diskLayer = new DiskLayer( propertyKeyTokenHolder, labelTokens, relationshipTypeTokens, schemaStorage,
neoStores, indexingService, storeStatementFactory( neoStores ) );
storeLayer = new CacheLayer( diskLayer, schemaCache, procedureCache );
}
catch ( Throwable failure )
{
neoStores.close();
throw failure;
}
return new StoreLayerModule()
{
@Override
public StoreReadLayer storeLayer()
{
return storeLayer;
}
@Override
public NeoStores neoStores()
{
return neoStores;
}
@Override
public MetaDataStore metaDataStore()
{
return neoStores.getMetaDataStore();
}
@Override
public IndexingService indexingService()
{
return indexingService;
}
@Override
public IndexUpdatesValidator indexUpdatesValidator()
{
return indexUpdatesValidator;
}
@Override
public LabelScanStore labelScanStore()
{
return labelScanStore;
}
@Override
public IntegrityValidator integrityValidator()
{
return integrityValidator;
}
@Override
public SchemaIndexProviderMap schemaIndexProviderMap()
{
return providerMap;
}
@Override
public CacheAccessBackDoor cacheAccess()
{
return cacheAccess;
}
@Override
public void loadSchemaCache()
{
List<SchemaRule> schemaRules = toList( neoStores.getSchemaStore().loadAllSchemaRules() );
schemaCache.load( schemaRules );
}
};
}
private Factory<StoreStatement> storeStatementFactory( final NeoStores neoStores )
{
final LockService lockService =
config.get( use_read_locks_on_property_reads ) ? this.lockService : NO_LOCK_SERVICE;
return () -> new StoreStatement( neoStores, lockService );
}
private TransactionLogModule buildTransactionLogs( File storeDir, Config config, LogProvider logProvider,
JobScheduler scheduler,
LabelScanStore labelScanStore,
FileSystemAbstraction fileSystemAbstraction,
NeoStores neoStores, CacheAccessBackDoor cacheAccess,
IndexingService indexingService,
Iterable<IndexImplementation> indexProviders,
LegacyIndexApplierLookup legacyIndexApplierLookup )
{
TransactionMetadataCache transactionMetadataCache = new TransactionMetadataCache( 1000, 100_000 );
final PhysicalLogFiles logFiles = new PhysicalLogFiles( storeDir, PhysicalLogFile.DEFAULT_NAME,
fileSystemAbstraction );
final IdOrderingQueue legacyIndexTransactionOrdering = new SynchronizedArrayIdOrderingQueue( 20 );
final TransactionRepresentationStoreApplier storeApplier = dependencies.satisfyDependency(
new TransactionRepresentationStoreApplier( indexingService, alwaysCreateNewWriter( labelScanStore ),
neoStores, cacheAccess, lockService, legacyIndexApplierLookup, indexConfigStore, kernelHealth,
legacyIndexTransactionOrdering ) );
MetaDataStore metaDataStore = neoStores.getMetaDataStore();
final PhysicalLogFile logFile = life.add( new PhysicalLogFile( fileSystemAbstraction, logFiles,
config.get( GraphDatabaseSettings.logical_log_rotation_threshold ), metaDataStore,
metaDataStore, physicalLogMonitor, transactionMetadataCache ) );
final PhysicalLogFileInformation.LogVersionToTimestamp
logInformation = new PhysicalLogFileInformation.LogVersionToTimestamp()
{
@Override
public long getTimestampForVersion( long version ) throws IOException
{
LogPosition position = LogPosition.start( version );
try ( ReadableVersionableLogChannel channel = logFile.getReader( position ) )
{
final LogEntryReader<ReadableVersionableLogChannel> reader = new VersionAwareLogEntryReader<>();
LogEntry entry;
while ( (entry = reader.readLogEntry( channel )) != null )
{
if ( entry instanceof LogEntryStart )
{
return entry.<LogEntryStart>as().getTimeWritten();
}
}
}
return -1;
}
};
final LogFileInformation logFileInformation =
new PhysicalLogFileInformation( logFiles, transactionMetadataCache, metaDataStore, logInformation );
String pruningConf = config.get(
config.get( GraphDatabaseFacadeFactory.Configuration.ephemeral )
? GraphDatabaseFacadeFactory.Configuration.ephemeral_keep_logical_logs
: GraphDatabaseSettings.keep_logical_logs );
LogPruneStrategy logPruneStrategy = fromConfigValue( fs, logFileInformation, logFiles, pruningConf );
final LogPruning logPruning = new LogPruningImpl( logPruneStrategy, logProvider );
final StoreFlusher storeFlusher = new StoreFlusher(
neoStores, indexingService, labelScanStore, indexProviders );
final LogRotation logRotation =
new LogRotationImpl( monitors.newMonitor( LogRotation.Monitor.class ), logFile, kernelHealth );
final TransactionAppender appender = life.add( new BatchingTransactionAppender(
logFile, logRotation, transactionMetadataCache, metaDataStore, legacyIndexTransactionOrdering,
kernelHealth ) );
final LogicalTransactionStore logicalTransactionStore =
new PhysicalLogicalTransactionStore( logFile, transactionMetadataCache );
int txThreshold = config.get( GraphDatabaseSettings.check_point_interval_tx );
final CountCommittedTransactionThreshold countCommittedTransactionThreshold =
new CountCommittedTransactionThreshold( txThreshold );
long timeMillisThreshold = config.get( GraphDatabaseSettings.check_point_interval_time );
TimeCheckPointThreshold timeCheckPointThreshold =
new TimeCheckPointThreshold( timeMillisThreshold, Clock.SYSTEM_CLOCK );
CheckPointThreshold threshold =
CheckPointThresholds.or( countCommittedTransactionThreshold, timeCheckPointThreshold );
final CheckPointerImpl checkPointer = new CheckPointerImpl(
metaDataStore, threshold, storeFlusher, logPruning, appender, kernelHealth, logProvider,
tracers.checkPointTracer );
long recurringPeriod = Math.min( timeMillisThreshold, TimeUnit.SECONDS.toMillis( 10 ) );
CheckPointScheduler checkPointScheduler = new CheckPointScheduler( checkPointer, scheduler, recurringPeriod );
life.add( checkPointer );
life.add( checkPointScheduler );
return new TransactionLogModule()
{
@Override
public TransactionRepresentationStoreApplier storeApplier()
{
return storeApplier;
}
@Override
public LogicalTransactionStore logicalTransactionStore()
{
return logicalTransactionStore;
}
@Override
public LogFileInformation logFileInformation()
{
return logFileInformation;
}
@Override
public PhysicalLogFiles logFiles()
{
return logFiles;
}
@Override
public LogFile logFile()
{
return logFile;
}
@Override
public StoreFlusher storeFlusher()
{
return storeFlusher;
}
@Override
public LogRotation logRotation()
{
return logRotation;
}
@Override
public CheckPointer checkPointing()
{
return checkPointer;
}
@Override
public TransactionAppender transactionAppender()
{
return appender;
}
@Override
public IdOrderingQueue legacyIndexTransactionOrderingQueue()
{
return legacyIndexTransactionOrdering;
}
};
}
private Supplier<LabelScanWriter> alwaysCreateNewWriter( final LabelScanStore labelScanStore )
{
return labelScanStore::newWriter;
}
private void buildRecovery( final FileSystemAbstraction fileSystemAbstraction, CacheAccessBackDoor cacheAccess,
IndexingService indexingService, LabelScanStore labelScanStore,
final NeoStores neoStores, RecoveryVisitor.Monitor recoveryVisitorMonitor, Recovery.Monitor recoveryMonitor,
final PhysicalLogFiles logFiles, final StoreFlusher storeFlusher,
final StartupStatisticsProvider startupStatistics,
LegacyIndexApplierLookup legacyIndexApplierLookup )
{
MetaDataStore metaDataStore = neoStores.getMetaDataStore();
final RecoveryLabelScanWriterProvider labelScanWriters =
new RecoveryLabelScanWriterProvider( labelScanStore, 1000 );
final RecoveryLegacyIndexApplierLookup recoveryLegacyIndexApplierLookup = new RecoveryLegacyIndexApplierLookup(
legacyIndexApplierLookup, 1000 );
final RecoveryIndexingUpdatesValidator indexUpdatesValidator = new RecoveryIndexingUpdatesValidator( indexingService );
final TransactionRepresentationStoreApplier storeRecoverer =
new TransactionRepresentationStoreApplier( indexingService, labelScanWriters, neoStores, cacheAccess,
lockService, legacyIndexApplierLookup, indexConfigStore, kernelHealth, IdOrderingQueue.BYPASS );
RecoveryVisitor recoveryVisitor =
new RecoveryVisitor( metaDataStore, storeRecoverer, indexUpdatesValidator, recoveryVisitorMonitor );
LogEntryReader<ReadableLogChannel> logEntryReader = new VersionAwareLogEntryReader<>();
final Visitor<LogVersionedStoreChannel,IOException> logFileRecoverer =
new LogFileRecoverer( logEntryReader, recoveryVisitor );
final LatestCheckPointFinder checkPointFinder =
new LatestCheckPointFinder( logFiles, fileSystemAbstraction, logEntryReader );
Recovery.SPI spi = new DefaultRecoverySPI( labelScanWriters, recoveryLegacyIndexApplierLookup,
storeFlusher, neoStores, logFileRecoverer, logFiles, fileSystemAbstraction, metaDataStore,
checkPointFinder, indexUpdatesValidator );
Recovery recovery = new Recovery( spi, recoveryMonitor );
life.add( recovery );
life.add( new LifecycleAdapter()
{
@Override
public void init() throws Throwable
{
startupStatistics.setNumberOfRecoveredTransactions( recoveredCount.get() );
recoveredCount.set( 0 );
}
} );
}
private KernelModule buildKernel( IntegrityValidator integrityValidator, TransactionAppender appender,