Examples with Monitors org.neo4j.monitoring.Monitors used on opensource projects

Example 31 with Monitors

use of org.neo4j.monitoring.Monitors in project neo4j by neo4j.

the class DatabaseRecoveryIT method shouldSeeTheSameRecordsAtCheckpointAsAfterReverseRecovery.

@Test
void shouldSeeTheSameRecordsAtCheckpointAsAfterReverseRecovery() throws Exception {
    // given
    EphemeralFileSystemAbstraction fs = new EphemeralFileSystemAbstraction();
    managementService = new TestDatabaseManagementServiceBuilder(directory.homePath()).setFileSystem(fs).impermanent().build();
    GraphDatabaseService db = managementService.database(DEFAULT_DATABASE_NAME);
    produceRandomGraphUpdates(db, 100);
    checkPoint(db);
    EphemeralFileSystemAbstraction checkPointFs = fs.snapshot();
    // when
    produceRandomGraphUpdates(db, 100);
    flush(db);
    EphemeralFileSystemAbstraction crashedFs = fs.snapshot();
    managementService.shutdown();
    fs.close();
    Dependencies dependencies = new Dependencies();
    Monitors monitors;
    AtomicReference<EphemeralFileSystemAbstraction> reversedFs;
    try (PageCache pageCache = pageCacheExtension.getPageCache(crashedFs)) {
        dependencies.satisfyDependencies(pageCache);
        monitors = new Monitors();
        reversedFs = new AtomicReference<>();
        monitors.addMonitorListener(new RecoveryMonitor() {

            @Override
            public void reverseStoreRecoveryCompleted(long checkpointTxId) {
                try {
                    // Flush the page cache which will fished out of the GlobalModule at the point of constructing the database
                    pageCache.flushAndForce();
                } catch (IOException e) {
                    throw new UncheckedIOException(e);
                }
                // The stores should now be equal in content to the db as it was right after the checkpoint.
                // Grab a snapshot so that we can compare later.
                reversedFs.set(crashedFs.snapshot());
            }
        });
        DatabaseManagementService managementService = new TestDatabaseManagementServiceBuilder(directory.homePath()).setFileSystem(crashedFs).setExternalDependencies(dependencies).setMonitors(monitors).impermanent().build();
        managementService.shutdown();
    }
    // then
    fs.close();
    try {
        // Here we verify that the neostore contents, record by record are exactly the same when comparing
        // the store as it was right after the checkpoint with the store as it was right after reverse recovery completed.
        assertSameStoreContents(checkPointFs, reversedFs.get(), databaseLayout);
    } finally {
        IOUtils.closeAll(checkPointFs, reversedFs.get());
    }
}

Example 32 with Monitors

use of org.neo4j.monitoring.Monitors in project neo4j by neo4j.

the class KernelTransactionsTest method newKernelTransactions.

private KernelTransactions newKernelTransactions(Locks locks, StorageEngine storageEngine, TransactionCommitProcess commitProcess, boolean testKernelTransactions, Config config) {
    LifeSupport life = new LifeSupport();
    life.start();
    TransactionIdStore transactionIdStore = mock(TransactionIdStore.class);
    when(transactionIdStore.getLastCommittedTransaction()).thenReturn(new TransactionId(0, 0, 0));
    Tracers tracers = new Tracers("null", NullLog.getInstance(), new Monitors(), mock(JobScheduler.class), clock, config);
    final DatabaseTracers databaseTracers = new DatabaseTracers(tracers);
    KernelTransactions transactions;
    if (testKernelTransactions) {
        transactions = createTestTransactions(storageEngine, commitProcess, transactionIdStore, databaseTracers, locks, clock, databaseAvailabilityGuard);
    } else {
        transactions = createTransactions(storageEngine, commitProcess, transactionIdStore, databaseTracers, locks, clock, databaseAvailabilityGuard, config);
    }
    transactions.start();
    return transactions;
}

Example 33 with Monitors

use of org.neo4j.monitoring.Monitors in project neo4j by neo4j.

the class LuceneIndexProviderTest method createIndexProvider.

private LuceneIndexProvider createIndexProvider(Config config) {
    var directoryFactory = new DirectoryFactory.InMemoryDirectoryFactory();
    var directoryStructureFactory = directoriesByProvider(testDir.homePath());
    return new LuceneIndexProvider(fileSystem, directoryFactory, directoryStructureFactory, new Monitors(), config, writable());
}

Example 34 with Monitors

use of org.neo4j.monitoring.Monitors in project neo4j by neo4j.

the class Recovery method performRecovery.

/**
 * Performs recovery of database described by provided layout.
 * <b>Transaction logs should be located in their default location and any provided custom location is ignored.</b>
 * If recovery is not required nothing will be done to the the database or logs.
 *
 * @param fs database filesystem
 * @param pageCache page cache used to perform database recovery.
 * @param tracers underlying operations tracer
 * @param config custom configuration
 * @param databaseLayout database to recover layout.
 * @param storageEngineFactory storage engine factory
 * @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, MemoryTracker memoryTracker) throws IOException {
    requireNonNull(fs);
    requireNonNull(pageCache);
    requireNonNull(config);
    requireNonNull(databaseLayout);
    requireNonNull(storageEngineFactory);
    // remove any custom logical logs location
    Config recoveryConfig = Config.newBuilder().fromConfig(config).set(GraphDatabaseSettings.transaction_logs_root_path, null).build();
    performRecovery(fs, pageCache, tracers, recoveryConfig, databaseLayout, StorageEngineFactory.defaultStorageEngine(), forceRunRecovery, NullLogProvider.getInstance(), new Monitors(), loadExtensions(), Optional.empty(), EMPTY_CHECKER, memoryTracker, systemClock());
}

Example 35 with Monitors

use of org.neo4j.monitoring.Monitors 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();
    }
}