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

Example 6 with DatabaseHealth

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

the class BatchingNeoStoresTest method someDataInTheDatabase.

private void someDataInTheDatabase(Config config) throws Exception {
    NullLog nullLog = NullLog.getInstance();
    try (JobScheduler scheduler = JobSchedulerFactory.createInitialisedScheduler();
        PageCache pageCache = new ConfiguringPageCacheFactory(fileSystem, Config.defaults(), PageCacheTracer.NULL, nullLog, scheduler, Clocks.nanoClock(), new MemoryPools()).getOrCreatePageCache();
        Lifespan life = new Lifespan()) {
        // TODO this little dance with TokenHolders is really annoying and must be solved with a better abstraction
        DeferredInitializedTokenCreator propertyKeyTokenCreator = new DeferredInitializedTokenCreator() {

            @Override
            void create(String name, boolean internal, int id) {
                txState.propertyKeyDoCreateForName(name, internal, id);
            }
        };
        DeferredInitializedTokenCreator labelTokenCreator = new DeferredInitializedTokenCreator() {

            @Override
            void create(String name, boolean internal, int id) {
                txState.labelDoCreateForName(name, internal, id);
            }
        };
        DeferredInitializedTokenCreator relationshipTypeTokenCreator = new DeferredInitializedTokenCreator() {

            @Override
            void create(String name, boolean internal, int id) {
                txState.relationshipTypeDoCreateForName(name, internal, id);
            }
        };
        TokenHolders tokenHolders = new TokenHolders(new DelegatingTokenHolder(propertyKeyTokenCreator, TokenHolder.TYPE_PROPERTY_KEY), new DelegatingTokenHolder(labelTokenCreator, TokenHolder.TYPE_LABEL), new DelegatingTokenHolder(relationshipTypeTokenCreator, TokenHolder.TYPE_RELATIONSHIP_TYPE));
        IndexConfigCompleter indexConfigCompleter = index -> index;
        RecoveryCleanupWorkCollector recoveryCleanupWorkCollector = immediate();
        RecordStorageEngine storageEngine = life.add(new RecordStorageEngine(databaseLayout, Config.defaults(), pageCache, fileSystem, NullLogProvider.getInstance(), tokenHolders, new DatabaseSchemaState(NullLogProvider.getInstance()), new StandardConstraintSemantics(), indexConfigCompleter, LockService.NO_LOCK_SERVICE, new DatabaseHealth(PanicEventGenerator.NO_OP, nullLog), new DefaultIdGeneratorFactory(fileSystem, immediate(), DEFAULT_DATABASE_NAME), new DefaultIdController(), recoveryCleanupWorkCollector, PageCacheTracer.NULL, true, INSTANCE, writable(), CommandLockVerification.Factory.IGNORE, LockVerificationMonitor.Factory.IGNORE));
        // Create the relationship type token
        TxState txState = new TxState();
        NeoStores neoStores = storageEngine.testAccessNeoStores();
        CommandCreationContext commandCreationContext = storageEngine.newCommandCreationContext(INSTANCE);
        commandCreationContext.initialize(NULL);
        propertyKeyTokenCreator.initialize(neoStores.getPropertyKeyTokenStore(), txState);
        labelTokenCreator.initialize(neoStores.getLabelTokenStore(), txState);
        relationshipTypeTokenCreator.initialize(neoStores.getRelationshipTypeTokenStore(), txState);
        int relTypeId = tokenHolders.relationshipTypeTokens().getOrCreateId(RELTYPE.name());
        apply(txState, commandCreationContext, storageEngine);
        // Finally, we're initialized and ready to create two nodes and a relationship
        txState = new TxState();
        long node1 = commandCreationContext.reserveNode();
        long node2 = commandCreationContext.reserveNode();
        txState.nodeDoCreate(node1);
        txState.nodeDoCreate(node2);
        txState.relationshipDoCreate(commandCreationContext.reserveRelationship(), relTypeId, node1, node2);
        apply(txState, commandCreationContext, storageEngine);
        neoStores.flush(NULL);
    }
}

Example 7 with DatabaseHealth

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

the class StoreUpgraderInterruptionTestIT method newUpgrader.

private StoreUpgrader newUpgrader(StoreVersionCheck versionCheck, MigrationProgressMonitor progressMonitor, StoreMigrationParticipant... participants) {
    Config config = Config.defaults(allow_upgrade, true);
    Dependencies dependencies = new Dependencies();
    dependencies.satisfyDependencies(new Monitors());
    RecordStorageEngineFactory storageEngineFactory = new RecordStorageEngineFactory();
    var databaseHealth = new DatabaseHealth(PanicEventGenerator.NO_OP, NullLog.getInstance());
    LogsUpgrader logsUpgrader = new LogsUpgrader(fs, storageEngineFactory, workingDatabaseLayout, pageCache, legacyTransactionLogsLocator, config, dependencies, NULL, INSTANCE, databaseHealth, false);
    StoreUpgrader upgrader = new StoreUpgrader(versionCheck, progressMonitor, config, fs, NullLogProvider.getInstance(), logsUpgrader, NULL);
    for (StoreMigrationParticipant participant : participants) {
        upgrader.addParticipant(participant);
    }
    return upgrader;
}

Example 8 with DatabaseHealth

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

the class RecoveryCleanupIT method dirtyDatabase.

private void dirtyDatabase() throws IOException {
    db = startDatabase();
    Health databaseHealth = databaseHealth(db);
    index(db);
    someData(db);
    checkpoint(db);
    someData(db);
    databaseHealth.panic(new Throwable("Trigger recovery on next startup"));
    managementService.shutdown();
    db = null;
}

Example 9 with DatabaseHealth

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

the class DatabaseHealthTest method shouldGenerateDatabasePanicEvents.

@Test
void shouldGenerateDatabasePanicEvents() {
    // GIVEN
    DatabasePanicEventGenerator generator = mock(DatabasePanicEventGenerator.class);
    Health databaseHealth = new DatabaseHealth(generator, NullLogProvider.getInstance().getLog(DatabaseHealth.class));
    databaseHealth.healed();
    // WHEN
    Exception cause = new Exception("My own fault");
    databaseHealth.panic(cause);
    databaseHealth.panic(cause);
    // THEN
    verify(generator).panic(cause);
}

Example 10 with DatabaseHealth

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

the class DatabaseHealthTest method databaseWithCriticalErrorsCanNotBeHealed.

@Test
void databaseWithCriticalErrorsCanNotBeHealed() {
    AssertableLogProvider logProvider = new AssertableLogProvider();
    Health databaseHealth = new DatabaseHealth(mock(DatabasePanicEventGenerator.class), logProvider.getLog(DatabaseHealth.class));
    assertTrue(databaseHealth.isHealthy());
    IOException criticalException = new IOException("Space exception.", new OutOfMemoryError("Out of memory."));
    databaseHealth.panic(criticalException);
    assertFalse(databaseHealth.isHealthy());
    assertFalse(databaseHealth.healed());
    assertThat(logProvider).doesNotContainMessage("Database health set to OK").containsMessages("Database encountered a critical error and can't be healed. Restart required.");
}