Examples with Descriptors org.apache.jackrabbit.oak.api.Descriptors used on opensource projects

Example 1 with Descriptors

use of org.apache.jackrabbit.oak.api.Descriptors in project jackrabbit-oak by apache.

the class AggregatingDescriptorsTest method testInitialDescriptors.

@Test
public void testInitialDescriptors() throws Exception {
    final ValueFactory valueFactory = new SimpleValueFactory();
    final MyTracker<Descriptors> tracker = createTracker();
    final GenericDescriptors input = new GenericDescriptors();
    input.put("a", valueFactory.createValue("b"), true, false);
    input.put("b", valueFactory.createValue("c"), true, true);
    tracker.addService(input);
    AggregatingDescriptors aggregator = new AggregatingDescriptors(tracker);
    assertMatches(aggregator, 2, input);
}

Example 2 with Descriptors

use of org.apache.jackrabbit.oak.api.Descriptors in project jackrabbit-oak by apache.

the class AggregatingDescriptorsTest method testLaterAddedDescriptors.

@Test
public void testLaterAddedDescriptors() throws Exception {
    final ValueFactory valueFactory = new SimpleValueFactory();
    final MyTracker<Descriptors> tracker = createTracker();
    AggregatingDescriptors aggregator = new AggregatingDescriptors(tracker);
    assertMatches(aggregator, 0);
    final GenericDescriptors input1 = new GenericDescriptors();
    input1.put("a", valueFactory.createValue("b"), true, false);
    input1.put("b", valueFactory.createValue("c"), true, true);
    tracker.addService(input1);
    assertMatches(aggregator, 2, input1);
    final GenericDescriptors input2 = new GenericDescriptors();
    input2.put("b", valueFactory.createValue("c2"), true, true);
    input2.put("c", valueFactory.createValue("d"), true, true);
    tracker.addService(input2);
    assertMatches(aggregator, 3, input2, input1);
}

Example 3 with Descriptors

use of org.apache.jackrabbit.oak.api.Descriptors in project jackrabbit-oak by apache.

the class AggregatingDescriptors method getKeys.

@Override
public String[] getKeys() {
    Set<String> keys = new HashSet<String>();
    for (Iterator<Descriptors> it = getDescriptors().iterator(); it.hasNext(); ) {
        Descriptors descriptors = it.next();
        Collections.addAll(keys, descriptors.getKeys());
    }
    return keys.toArray(new String[keys.size()]);
}

Example 4 with Descriptors

use of org.apache.jackrabbit.oak.api.Descriptors in project jackrabbit-oak by apache.

the class AggregatingDescriptors method getValue.

@CheckForNull
@Override
public Value getValue(@Nonnull String key) {
    for (Iterator<Descriptors> it = getDescriptors().iterator(); it.hasNext(); ) {
        Descriptors descriptors = it.next();
        Value value = descriptors.getValue(key);
        if (value != null) {
            return value;
        }
    }
    return null;
}

Example 5 with Descriptors

use of org.apache.jackrabbit.oak.api.Descriptors in project jackrabbit-oak by apache.

the class Registrations method registerSegmentStore.

/**
 * Configures and registers a new SegmentNodeStore instance together will
 * all required components. Anything that must be disposed of (like
 * registered services or MBeans) will be registered via the
 * {@code registration} parameter.
 *
 * @param context            An instance of {@link ComponentContext}.
 * @param blobStore          An instance of {@link BlobStore}. It can be
 *                           {@code null}.
 * @param segmentStore       An instance of {@link SegmentNodeStorePersistence}. It can be
 *                           {@code null}.
 * @param statisticsProvider An instance of {@link StatisticsProvider}.
 * @param closer             An instance of {@link Closer}. It will be used
 *                           to track every registered service or
 *                           component.
 * @param whiteboard         An instance of {@link Whiteboard}. It will be
 *                           used to register services in the OSGi
 *                           framework.
 * @param role               The role of this component. It can be {@code
 *                           null}.
 * @param descriptors        Determines if repository descriptors related to
 *                           discovery services should be registered.
 * @return A configured {@link SegmentNodeStore}, or {@code null} if the
 * setup failed.
 * @throws IOException In case an unrecoverable error occurs.
 */
static SegmentNodeStore registerSegmentStore(@Nonnull ComponentContext context, @Nullable BlobStore blobStore, @Nullable SegmentNodeStorePersistence segmentStore, @Nonnull StatisticsProvider statisticsProvider, @Nonnull Closer closer, @Nonnull Whiteboard whiteboard, @Nullable String role, boolean descriptors) throws IOException {
    Configuration configuration = new Configuration(context, role);
    Closeables closeables = new Closeables(closer);
    Registrations registrations = new Registrations(whiteboard, role);
    // Listen for GCMonitor services
    GCMonitor gcMonitor = GCMonitor.EMPTY;
    if (configuration.isPrimarySegmentStore()) {
        GCMonitorTracker tracker = new GCMonitorTracker();
        tracker.start(whiteboard);
        closeables.add(tracker);
        gcMonitor = tracker;
    }
    // Create the gc options
    if (configuration.getCompactionGainThreshold() != null) {
        log.warn("Detected deprecated flag 'compaction.gainThreshold'. " + "Please use 'compaction.sizeDeltaEstimation' instead and " + "'compaction.disableEstimation' to disable estimation.");
    }
    if (configuration.getRetainedGenerations() != RETAINED_GENERATIONS_DEFAULT) {
        log.warn("The number of retained generations defaults to {} and can't be " + "changed. This configuration option is considered deprecated " + "and will be removed in the future.", RETAINED_GENERATIONS_DEFAULT);
    }
    SegmentGCOptions gcOptions = new SegmentGCOptions(configuration.getPauseCompaction(), configuration.getRetryCount(), configuration.getForceCompactionTimeout()).setGcSizeDeltaEstimation(configuration.getSizeDeltaEstimation()).setMemoryThreshold(configuration.getMemoryThreshold()).setEstimationDisabled(configuration.getDisableEstimation()).setGCLogInterval(configuration.getGCProcessLog());
    if (configuration.isStandbyInstance()) {
        gcOptions.setRetainedGenerations(1);
    }
    // Build the FileStore
    FileStoreBuilder builder = fileStoreBuilder(configuration.getSegmentDirectory()).withSegmentCacheSize(configuration.getSegmentCacheSize()).withStringCacheSize(configuration.getStringCacheSize()).withTemplateCacheSize(configuration.getTemplateCacheSize()).withStringDeduplicationCacheSize(configuration.getStringDeduplicationCacheSize()).withTemplateDeduplicationCacheSize(configuration.getTemplateDeduplicationCacheSize()).withNodeDeduplicationCacheSize(configuration.getNodeDeduplicationCacheSize()).withMaxFileSize(configuration.getMaxFileSize()).withMemoryMapping(configuration.getMemoryMapping()).withGCMonitor(gcMonitor).withIOMonitor(new MetricsIOMonitor(statisticsProvider)).withStatisticsProvider(statisticsProvider).withGCOptions(gcOptions);
    if (configuration.hasCustomBlobStore() && blobStore != null) {
        log.info("Initializing SegmentNodeStore with BlobStore [{}]", blobStore);
        builder.withBlobStore(blobStore);
    }
    if (configuration.hasCustomSegmentStore() && segmentStore != null) {
        log.info("Initializing SegmentNodeStore with custom persistence [{}]", segmentStore);
        builder.withCustomPersistence(segmentStore);
    }
    if (configuration.isStandbyInstance()) {
        builder.withSnfeListener(IGNORE_SNFE);
    }
    final FileStore store;
    try {
        store = builder.build();
    } catch (InvalidFileStoreVersionException e) {
        log.error("The storage format is not compatible with this version of Oak Segment Tar", e);
        return null;
    }
    // store should be closed last
    closeables.add(store);
    // Listen for Executor services on the whiteboard
    WhiteboardExecutor executor = new WhiteboardExecutor();
    executor.start(whiteboard);
    closeables.add(executor);
    // Expose stats about the segment cache
    CacheStatsMBean segmentCacheStats = store.getSegmentCacheStats();
    closeables.add(registrations.registerMBean(CacheStatsMBean.class, segmentCacheStats, CacheStats.TYPE, segmentCacheStats.getName()));
    // Expose stats about the string and template caches
    CacheStatsMBean stringCacheStats = store.getStringCacheStats();
    closeables.add(registrations.registerMBean(CacheStatsMBean.class, stringCacheStats, CacheStats.TYPE, stringCacheStats.getName()));
    CacheStatsMBean templateCacheStats = store.getTemplateCacheStats();
    closeables.add(registrations.registerMBean(CacheStatsMBean.class, templateCacheStats, CacheStats.TYPE, templateCacheStats.getName()));
    WriterCacheManager cacheManager = builder.getCacheManager();
    CacheStatsMBean stringDeduplicationCacheStats = cacheManager.getStringCacheStats();
    if (stringDeduplicationCacheStats != null) {
        closeables.add(registrations.registerMBean(CacheStatsMBean.class, stringDeduplicationCacheStats, CacheStats.TYPE, stringDeduplicationCacheStats.getName()));
    }
    CacheStatsMBean templateDeduplicationCacheStats = cacheManager.getTemplateCacheStats();
    if (templateDeduplicationCacheStats != null) {
        closeables.add(registrations.registerMBean(CacheStatsMBean.class, templateDeduplicationCacheStats, CacheStats.TYPE, templateDeduplicationCacheStats.getName()));
    }
    CacheStatsMBean nodeDeduplicationCacheStats = cacheManager.getNodeCacheStats();
    if (nodeDeduplicationCacheStats != null) {
        closeables.add(registrations.registerMBean(CacheStatsMBean.class, nodeDeduplicationCacheStats, CacheStats.TYPE, nodeDeduplicationCacheStats.getName()));
    }
    // Expose an MBean to managing and monitoring garbage collection
    final FileStoreGCMonitor monitor = new FileStoreGCMonitor(Clock.SIMPLE);
    closeables.add(registrations.register(GCMonitor.class, monitor));
    if (!configuration.isStandbyInstance()) {
        closeables.add(registrations.registerMBean(SegmentRevisionGC.class, new SegmentRevisionGCMBean(store, gcOptions, monitor), SegmentRevisionGC.TYPE, "Segment node store revision garbage collection"));
    }
    Runnable cancelGC = new Runnable() {

        @Override
        public void run() {
            store.cancelGC();
        }
    };
    Supplier<String> statusMessage = new Supplier<String>() {

        @Override
        public String get() {
            return monitor.getStatus();
        }
    };
    closeables.add(registrations.registerMBean(RevisionGCMBean.class, new RevisionGC(store.getGCRunner(), cancelGC, statusMessage, executor), RevisionGCMBean.TYPE, "Revision garbage collection"));
    // Expose statistics about the FileStore
    closeables.add(registrations.registerMBean(FileStoreStatsMBean.class, store.getStats(), FileStoreStatsMBean.TYPE, "FileStore statistics"));
    // register segment node store
    SegmentNodeStore.SegmentNodeStoreBuilder segmentNodeStoreBuilder = SegmentNodeStoreBuilders.builder(store).withStatisticsProvider(statisticsProvider);
    if (configuration.isStandbyInstance() || !configuration.isPrimarySegmentStore()) {
        segmentNodeStoreBuilder.dispatchChanges(false);
    }
    SegmentNodeStore segmentNodeStore = segmentNodeStoreBuilder.build();
    if (configuration.isPrimarySegmentStore()) {
        ObserverTracker observerTracker = new ObserverTracker(segmentNodeStore);
        observerTracker.start(context.getBundleContext());
        closeables.add(observerTracker);
    }
    if (configuration.isPrimarySegmentStore()) {
        closeables.add(registrations.registerMBean(CheckpointMBean.class, new SegmentCheckpointMBean(segmentNodeStore), CheckpointMBean.TYPE, "Segment node store checkpoint management"));
    }
    if (descriptors) {
        // ensure a clusterId is initialized
        // and expose it as 'oak.clusterid' repository descriptor
        GenericDescriptors clusterIdDesc = new GenericDescriptors();
        clusterIdDesc.put(ClusterRepositoryInfo.OAK_CLUSTERID_REPOSITORY_DESCRIPTOR_KEY, new SimpleValueFactory().createValue(getOrCreateId(segmentNodeStore)), true, false);
        closeables.add(registrations.register(Descriptors.class, clusterIdDesc));
        // Register "discovery lite" descriptors
        closeables.add(registrations.register(Descriptors.class, new SegmentDiscoveryLiteDescriptors(segmentNodeStore)));
    }
    // If a shared data store register the repo id in the data store
    if (configuration.isPrimarySegmentStore() && isShared(blobStore)) {
        SharedDataStore sharedDataStore = (SharedDataStore) blobStore;
        try {
            sharedDataStore.addMetadataRecord(new ByteArrayInputStream(new byte[0]), SharedStoreRecordType.REPOSITORY.getNameFromId(getOrCreateId(segmentNodeStore)));
        } catch (Exception e) {
            throw new IOException("Could not register a unique repositoryId", e);
        }
        if (blobStore instanceof BlobTrackingStore) {
            BlobTrackingStore trackingStore = (BlobTrackingStore) blobStore;
            if (trackingStore.getTracker() != null) {
                trackingStore.getTracker().close();
            }
            trackingStore.addTracker(new BlobIdTracker(configuration.getRepositoryHome(), getOrCreateId(segmentNodeStore), configuration.getBlobSnapshotInterval(), sharedDataStore));
        }
    }
    if (configuration.isPrimarySegmentStore() && blobStore instanceof GarbageCollectableBlobStore) {
        BlobGarbageCollector gc = new MarkSweepGarbageCollector(new SegmentBlobReferenceRetriever(store), (GarbageCollectableBlobStore) blobStore, executor, TimeUnit.SECONDS.toMillis(configuration.getBlobGcMaxAge()), getOrCreateId(segmentNodeStore), whiteboard);
        closeables.add(registrations.registerMBean(BlobGCMBean.class, new BlobGC(gc, executor), BlobGCMBean.TYPE, "Segment node store blob garbage collection"));
    }
    // Expose an MBean for backup/restore operations
    closeables.add(registrations.registerMBean(FileStoreBackupRestoreMBean.class, new FileStoreBackupRestoreImpl(segmentNodeStore, store.getRevisions(), store.getReader(), configuration.getBackupDirectory(), executor), FileStoreBackupRestoreMBean.TYPE, "Segment node store backup/restore"));
    // Expose statistics about the SegmentNodeStore
    closeables.add(registrations.registerMBean(SegmentNodeStoreStatsMBean.class, segmentNodeStore.getStats(), SegmentNodeStoreStatsMBean.TYPE, "SegmentNodeStore statistics"));
    if (configuration.isPrimarySegmentStore()) {
        log.info("Primary SegmentNodeStore initialized");
    } else {
        log.info("Secondary SegmentNodeStore initialized, role={}", role);
    }
    // Register a factory service to expose the FileStore
    closeables.add(registrations.register(SegmentStoreProvider.class, new DefaultSegmentStoreProvider(store)));
    if (configuration.isStandbyInstance()) {
        return segmentNodeStore;
    }
    if (configuration.isPrimarySegmentStore()) {
        Map<String, Object> props = new HashMap<String, Object>();
        props.put(Constants.SERVICE_PID, SegmentNodeStore.class.getName());
        props.put("oak.nodestore.description", new String[] { "nodeStoreType=segment" });
        closeables.add(registrations.register(NodeStore.class, segmentNodeStore, props));
    }
    return segmentNodeStore;
}