Examples with VersionAwareLogEntryReader org.neo4j.kernel.impl.transaction.log.entry.VersionAwareLogEntryReader used on opensource projects

Example 36 with VersionAwareLogEntryReader

use of org.neo4j.kernel.impl.transaction.log.entry.VersionAwareLogEntryReader in project neo4j by neo4j.

the class Recovery method performRecovery.

/**
 * Performs recovery of database described by provided layout.
 *
 * @param fs database filesystem
 * @param pageCache page cache used to perform database recovery.
 * @param tracers underlying operation tracers
 * @param config custom configuration
 * @param databaseLayout database to recover layout.
 * @param storageEngineFactory {@link StorageEngineFactory} for the storage to recover.
 * @param logProvider log provider
 * @param globalMonitors global server monitors
 * @param extensionFactories extension factories for extensions that should participate in recovery
 * @param providedLogFiles log files from database
 * @param forceRunRecovery to force recovery to run even if the usual checks indicates that it's not required.
 * In specific cases, like after store copy there's always a need for doing a recovery or at least to start the db, checkpoint and shut down,
 * even if the normal "is recovery required" checks says that recovery isn't required.
 * @throws IOException on any unexpected I/O exception encountered during recovery.
 */
public static void performRecovery(FileSystemAbstraction fs, PageCache pageCache, DatabaseTracers tracers, Config config, DatabaseLayout databaseLayout, StorageEngineFactory storageEngineFactory, boolean forceRunRecovery, LogProvider logProvider, Monitors globalMonitors, Iterable<ExtensionFactory<?>> extensionFactories, Optional<LogFiles> providedLogFiles, RecoveryStartupChecker startupChecker, MemoryTracker memoryTracker, Clock clock) throws IOException {
    Log recoveryLog = logProvider.getLog(Recovery.class);
    if (!forceRunRecovery && !isRecoveryRequired(fs, pageCache, databaseLayout, storageEngineFactory, config, providedLogFiles, memoryTracker)) {
        return;
    }
    checkAllFilesPresence(databaseLayout, fs, pageCache, storageEngineFactory);
    LifeSupport recoveryLife = new LifeSupport();
    Monitors monitors = new Monitors(globalMonitors, logProvider);
    DatabasePageCache databasePageCache = new DatabasePageCache(pageCache, IOController.DISABLED);
    SimpleLogService logService = new SimpleLogService(logProvider);
    VersionAwareLogEntryReader logEntryReader = new VersionAwareLogEntryReader(storageEngineFactory.commandReaderFactory());
    DatabaseReadOnlyChecker readOnlyChecker = writable();
    DatabaseSchemaState schemaState = new DatabaseSchemaState(logProvider);
    JobScheduler scheduler = JobSchedulerFactory.createInitialisedScheduler();
    VersionContextSupplier versionContextSupplier = EmptyVersionContextSupplier.EMPTY;
    DatabaseHealth databaseHealth = new DatabaseHealth(PanicEventGenerator.NO_OP, recoveryLog);
    TokenHolders tokenHolders = new TokenHolders(new DelegatingTokenHolder(new ReadOnlyTokenCreator(), TYPE_PROPERTY_KEY), new DelegatingTokenHolder(new ReadOnlyTokenCreator(), TYPE_LABEL), new DelegatingTokenHolder(new ReadOnlyTokenCreator(), TYPE_RELATIONSHIP_TYPE));
    RecoveryCleanupWorkCollector recoveryCleanupCollector = new GroupingRecoveryCleanupWorkCollector(scheduler, INDEX_CLEANUP, INDEX_CLEANUP_WORK, databaseLayout.getDatabaseName());
    DatabaseExtensions extensions = instantiateRecoveryExtensions(databaseLayout, fs, config, logService, databasePageCache, scheduler, DbmsInfo.TOOL, monitors, tokenHolders, recoveryCleanupCollector, readOnlyChecker, extensionFactories, tracers.getPageCacheTracer());
    DefaultIndexProviderMap indexProviderMap = new DefaultIndexProviderMap(extensions, config);
    StorageEngine storageEngine = storageEngineFactory.instantiate(fs, databaseLayout, config, databasePageCache, tokenHolders, schemaState, getConstraintSemantics(), indexProviderMap, NO_LOCK_SERVICE, new DefaultIdGeneratorFactory(fs, recoveryCleanupCollector, databaseLayout.getDatabaseName()), new DefaultIdController(), databaseHealth, logService.getInternalLogProvider(), recoveryCleanupCollector, tracers.getPageCacheTracer(), true, readOnlyChecker, memoryTracker);
    // Schema indexes
    FullScanStoreView fullScanStoreView = new FullScanStoreView(NO_LOCK_SERVICE, storageEngine::newReader, config, scheduler);
    IndexStoreViewFactory indexStoreViewFactory = new IndexStoreViewFactory(config, storageEngine::newReader, NO_LOCKS, fullScanStoreView, NO_LOCK_SERVICE, logProvider);
    IndexStatisticsStore indexStatisticsStore = new IndexStatisticsStore(databasePageCache, databaseLayout, recoveryCleanupCollector, readOnlyChecker, tracers.getPageCacheTracer());
    IndexingService indexingService = Database.buildIndexingService(storageEngine, schemaState, indexStoreViewFactory, indexStatisticsStore, config, scheduler, indexProviderMap, tokenHolders, logProvider, logProvider, monitors.newMonitor(IndexingService.Monitor.class), tracers.getPageCacheTracer(), memoryTracker, databaseLayout.getDatabaseName(), readOnlyChecker);
    MetadataProvider metadataProvider = storageEngine.metadataProvider();
    Dependencies dependencies = new Dependencies();
    dependencies.satisfyDependencies(databaseLayout, config, databasePageCache, fs, logProvider, tokenHolders, schemaState, getConstraintSemantics(), NO_LOCK_SERVICE, databaseHealth, new DefaultIdGeneratorFactory(fs, recoveryCleanupCollector, databaseLayout.getDatabaseName()), new DefaultIdController(), readOnlyChecker, versionContextSupplier, logService, metadataProvider);
    LogFiles logFiles = LogFilesBuilder.builder(databaseLayout, fs).withLogEntryReader(logEntryReader).withConfig(config).withDependencies(dependencies).withMemoryTracker(memoryTracker).build();
    boolean failOnCorruptedLogFiles = config.get(GraphDatabaseInternalSettings.fail_on_corrupted_log_files);
    validateStoreId(logFiles, storageEngine.getStoreId(), config);
    TransactionMetadataCache metadataCache = new TransactionMetadataCache();
    PhysicalLogicalTransactionStore transactionStore = new PhysicalLogicalTransactionStore(logFiles, metadataCache, logEntryReader, monitors, failOnCorruptedLogFiles);
    BatchingTransactionAppender transactionAppender = new BatchingTransactionAppender(logFiles, LogRotation.NO_ROTATION, metadataCache, metadataProvider, databaseHealth);
    LifeSupport schemaLife = new LifeSupport();
    schemaLife.add(storageEngine.schemaAndTokensLifecycle());
    schemaLife.add(indexingService);
    var doParallelRecovery = config.get(GraphDatabaseInternalSettings.do_parallel_recovery);
    TransactionLogsRecovery transactionLogsRecovery = transactionLogRecovery(fs, metadataProvider, monitors.newMonitor(RecoveryMonitor.class), monitors.newMonitor(RecoveryStartInformationProvider.Monitor.class), logFiles, storageEngine, transactionStore, metadataProvider, schemaLife, databaseLayout, failOnCorruptedLogFiles, recoveryLog, startupChecker, tracers.getPageCacheTracer(), memoryTracker, doParallelRecovery);
    CheckPointerImpl.ForceOperation forceOperation = new DefaultForceOperation(indexingService, storageEngine);
    var checkpointAppender = logFiles.getCheckpointFile().getCheckpointAppender();
    CheckPointerImpl checkPointer = new CheckPointerImpl(metadataProvider, RecoveryThreshold.INSTANCE, forceOperation, LogPruning.NO_PRUNING, checkpointAppender, databaseHealth, logProvider, tracers, IOController.DISABLED, new StoreCopyCheckPointMutex(), versionContextSupplier, clock);
    recoveryLife.add(scheduler);
    recoveryLife.add(recoveryCleanupCollector);
    recoveryLife.add(extensions);
    recoveryLife.add(indexProviderMap);
    recoveryLife.add(storageEngine);
    recoveryLife.add(new MissingTransactionLogsCheck(databaseLayout, config, fs, logFiles, recoveryLog));
    recoveryLife.add(logFiles);
    recoveryLife.add(transactionLogsRecovery);
    recoveryLife.add(transactionAppender);
    recoveryLife.add(checkPointer);
    try {
        recoveryLife.start();
        if (databaseHealth.isHealthy()) {
            checkPointer.forceCheckPoint(new SimpleTriggerInfo("Recovery completed."));
        }
    } finally {
        recoveryLife.shutdown();
    }
}

Example 37 with VersionAwareLogEntryReader

use of org.neo4j.kernel.impl.transaction.log.entry.VersionAwareLogEntryReader in project neo4j by neo4j.

the class CheckpointLogFile method reachableCheckpoints.

@Override
public List<CheckpointInfo> reachableCheckpoints() throws IOException {
    var versionVisitor = new RangeLogVersionVisitor();
    fileHelper.accept(versionVisitor);
    long highestVersion = versionVisitor.getHighestVersion();
    if (highestVersion < 0) {
        return emptyList();
    }
    long currentVersion = versionVisitor.getLowestVersion();
    var checkpointReader = new VersionAwareLogEntryReader(NO_COMMANDS, true);
    var checkpoints = new ArrayList<CheckpointInfo>();
    while (currentVersion <= highestVersion) {
        try (var channel = channelAllocator.openLogChannel(currentVersion);
            var reader = new ReadAheadLogChannel(channel, NO_MORE_CHANNELS, context.getMemoryTracker());
            var logEntryCursor = new LogEntryCursor(checkpointReader, reader)) {
            log.info("Scanning log file with version %d for checkpoint entries", currentVersion);
            LogEntryDetachedCheckpoint checkpoint;
            var lastCheckpointLocation = reader.getCurrentPosition();
            var lastLocation = lastCheckpointLocation;
            while (logEntryCursor.next()) {
                lastCheckpointLocation = lastLocation;
                LogEntry logEntry = logEntryCursor.get();
                checkpoint = verify(logEntry);
                checkpoints.add(new CheckpointInfo(checkpoint, lastCheckpointLocation));
                lastLocation = reader.getCurrentPosition();
            }
            currentVersion++;
        }
    }
    return checkpoints;
}

Example 38 with VersionAwareLogEntryReader

use of org.neo4j.kernel.impl.transaction.log.entry.VersionAwareLogEntryReader in project neo4j by neo4j.

the class CheckpointLogFile method findLatestCheckpoint.

@Override
public Optional<CheckpointInfo> findLatestCheckpoint() throws IOException {
    var versionVisitor = new RangeLogVersionVisitor();
    fileHelper.accept(versionVisitor);
    long highestVersion = versionVisitor.getHighestVersion();
    if (highestVersion < 0) {
        return Optional.empty();
    }
    long lowestVersion = versionVisitor.getLowestVersion();
    long currentVersion = highestVersion;
    var checkpointReader = new VersionAwareLogEntryReader(NO_COMMANDS, true);
    while (currentVersion >= lowestVersion) {
        try (var channel = channelAllocator.openLogChannel(currentVersion);
            var reader = new ReadAheadLogChannel(channel, NO_MORE_CHANNELS, context.getMemoryTracker());
            var logEntryCursor = new LogEntryCursor(checkpointReader, reader)) {
            log.info("Scanning log file with version %d for checkpoint entries", currentVersion);
            LogEntryDetachedCheckpoint checkpoint = null;
            var lastCheckpointLocation = reader.getCurrentPosition();
            var lastLocation = lastCheckpointLocation;
            while (logEntryCursor.next()) {
                lastCheckpointLocation = lastLocation;
                LogEntry logEntry = logEntryCursor.get();
                checkpoint = verify(logEntry);
                lastLocation = reader.getCurrentPosition();
            }
            if (checkpoint != null) {
                return Optional.of(new CheckpointInfo(checkpoint, lastCheckpointLocation));
            }
            currentVersion--;
        }
    }
    return Optional.empty();
}

Example 39 with VersionAwareLogEntryReader

use of org.neo4j.kernel.impl.transaction.log.entry.VersionAwareLogEntryReader in project neo4j by neo4j.

the class TransactionLogFilesTest method createLogFiles.

private LogFiles createLogFiles() throws Exception {
    var files = LogFilesBuilder.builder(databaseLayout, fileSystem).withTransactionIdStore(new SimpleTransactionIdStore()).withLogVersionRepository(new SimpleLogVersionRepository()).withLogEntryReader(new VersionAwareLogEntryReader(new TestCommandReaderFactory())).withStoreId(StoreId.UNKNOWN).build();
    files.init();
    return files;
}