Examples with FileWatcher org.neo4j.io.fs.watcher.FileWatcher used on opensource projects

Example 1 with FileWatcher

use of org.neo4j.io.fs.watcher.FileWatcher in project neo4j by neo4j.

the class SelectiveFileSystemAbstractionTest method provideSelectiveWatcher.

@Test
public void provideSelectiveWatcher() throws IOException {
    File specialFile = new File("special");
    File otherFile = new File("other");
    FileSystemAbstraction normal = mock(FileSystemAbstraction.class);
    FileSystemAbstraction special = mock(FileSystemAbstraction.class);
    FileWatcher specialWatcher = mock(FileWatcher.class);
    FileWatcher normalWatcher = mock(FileWatcher.class);
    WatchedResource specialResource = mock(WatchedResource.class);
    WatchedResource normalResource = mock(WatchedResource.class);
    when(special.fileWatcher()).thenReturn(specialWatcher);
    when(normal.fileWatcher()).thenReturn(normalWatcher);
    when(specialWatcher.watch(specialFile)).thenReturn(specialResource);
    when(normalWatcher.watch(otherFile)).thenReturn(normalResource);
    try (SelectiveFileSystemAbstraction fs = new SelectiveFileSystemAbstraction(specialFile, special, normal)) {
        FileWatcher fileWatcher = fs.fileWatcher();
        assertSame(specialResource, fileWatcher.watch(specialFile));
        assertSame(normalResource, fileWatcher.watch(otherFile));
    }
}

Example 2 with FileWatcher

use of org.neo4j.io.fs.watcher.FileWatcher in project neo4j by neo4j.

the class FileWatcherLifecycleAdapterTest method startMonitoringWhenLifecycleStarting.

@Test
public void startMonitoringWhenLifecycleStarting() throws Throwable {
    CountDownLatch latch = new CountDownLatch(1);
    FileWatcher watcher = new TestFileWatcher(latch);
    FileWatcherLifecycleAdapter watcherAdapter = new FileWatcherLifecycleAdapter(jobScheduler, watcher);
    watcherAdapter.init();
    watcherAdapter.start();
    latch.await();
}

Example 3 with FileWatcher

use of org.neo4j.io.fs.watcher.FileWatcher in project neo4j by neo4j.

the class FileWatchIT method doNotMonitorTransactionLogFiles.

@Test(timeout = TEST_TIMEOUT)
public void doNotMonitorTransactionLogFiles() throws InterruptedException, IOException {
    assumeFalse(SystemUtils.IS_OS_WINDOWS);
    FileWatcher fileWatcher = getFileWatcher(database);
    CheckPointer checkpointer = getCheckpointer(database);
    ModificationEventListener modificationEventListener = new ModificationEventListener(MetaDataStore.DEFAULT_NAME);
    fileWatcher.addFileWatchEventListener(modificationEventListener);
    do {
        createNode(database);
        forceCheckpoint(checkpointer);
    } while (!modificationEventListener.awaitModificationNotification());
    String fileName = PhysicalLogFile.DEFAULT_NAME + ".0";
    DeletionLatchEventListener deletionListener = new DeletionLatchEventListener(fileName);
    fileWatcher.addFileWatchEventListener(deletionListener);
    deleteFile(storeDir, fileName);
    deletionListener.awaitDeletionNotification();
    AssertableLogProvider.LogMatcher logMatcher = AssertableLogProvider.inLog(DefaultFileDeletionEventListener.class).info(containsString(fileName));
    logProvider.assertNone(logMatcher);
}

Example 4 with FileWatcher

use of org.neo4j.io.fs.watcher.FileWatcher in project neo4j by neo4j.

the class FileWatchIT method notifyWhenWholeStoreDirectoryRemoved.

@Test(timeout = TEST_TIMEOUT)
public void notifyWhenWholeStoreDirectoryRemoved() throws IOException, InterruptedException {
    assumeFalse(SystemUtils.IS_OS_WINDOWS);
    String fileName = MetaDataStore.DEFAULT_NAME;
    FileWatcher fileWatcher = getFileWatcher(database);
    CheckPointer checkpointer = getCheckpointer(database);
    ModificationEventListener modificationListener = new ModificationEventListener(fileName);
    fileWatcher.addFileWatchEventListener(modificationListener);
    do {
        createNode(database);
        forceCheckpoint(checkpointer);
    } while (!modificationListener.awaitModificationNotification());
    fileWatcher.removeFileWatchEventListener(modificationListener);
    String storeDirectoryName = TestDirectory.DATABASE_DIRECTORY;
    DeletionLatchEventListener eventListener = new DeletionLatchEventListener(storeDirectoryName);
    fileWatcher.addFileWatchEventListener(eventListener);
    FileUtils.deleteRecursively(storeDir);
    eventListener.awaitDeletionNotification();
    logProvider.assertContainsMessageContaining("'" + storeDirectoryName + "' which belongs to the store was deleted while database was running.");
}

Example 5 with FileWatcher

use of org.neo4j.io.fs.watcher.FileWatcher in project neo4j by neo4j.

the class FileWatchIT method doNotNotifyAboutLuceneIndexFilesDeletion.

@Test(timeout = TEST_TIMEOUT)
public void doNotNotifyAboutLuceneIndexFilesDeletion() throws InterruptedException, IOException {
    DependencyResolver dependencyResolver = ((GraphDatabaseAPI) database).getDependencyResolver();
    FileWatcher fileWatcher = getFileWatcher(database);
    CheckPointer checkPointer = dependencyResolver.resolveDependency(CheckPointer.class);
    String propertyStoreName = MetaDataStore.DEFAULT_NAME + StoreFactory.PROPERTY_STORE_NAME;
    AccumulativeDeletionEventListener accumulativeListener = new AccumulativeDeletionEventListener();
    ModificationEventListener modificationListener = new ModificationEventListener(propertyStoreName);
    fileWatcher.addFileWatchEventListener(modificationListener);
    fileWatcher.addFileWatchEventListener(accumulativeListener);
    String labelName = "labelName";
    String propertyName = "propertyName";
    Label testLabel = Label.label(labelName);
    createIndexes(database, propertyName, testLabel);
    do {
        createNode(database, propertyName, testLabel);
        forceCheckpoint(checkPointer);
    } while (!modificationListener.awaitModificationNotification());
    fileWatcher.removeFileWatchEventListener(modificationListener);
    ModificationEventListener afterRemovalListener = new ModificationEventListener(propertyStoreName);
    fileWatcher.addFileWatchEventListener(afterRemovalListener);
    dropAllIndexes(database);
    do {
        createNode(database, propertyName, testLabel);
        forceCheckpoint(checkPointer);
    } while (!afterRemovalListener.awaitModificationNotification());
    accumulativeListener.assertDoesNotHaveAnyDeletions();
}