Examples with LockManager org.exist.storage.lock.LockManager used on opensource projects

Example 11 with LockManager

use of org.exist.storage.lock.LockManager in project exist by eXist-db.

the class ExtCollection method toSequence.

private Sequence toSequence(final DocumentSet docs) throws XPathException {
    final Sequence result = new ValueSequence();
    final LockManager lockManager = context.getBroker().getBrokerPool().getLockManager();
    for (final Iterator<DocumentImpl> i = docs.getDocumentIterator(); i.hasNext(); ) {
        final DocumentImpl doc = i.next();
        // filter out binary documents, fn:collection should only return XML documents
        if (doc.getResourceType() == DocumentImpl.XML_FILE) {
            ManagedDocumentLock dlock = null;
            try {
                if (!context.inProtectedMode()) {
                    dlock = lockManager.acquireDocumentReadLock(doc.getURI());
                }
                result.add(new NodeProxy(doc));
            } catch (final LockException e) {
                throw new XPathException(this, ErrorCodes.FODC0002, e);
            } finally {
                if (dlock != null) {
                    dlock.close();
                }
            }
        }
    }
    return result;
}

Example 12 with LockManager

use of org.exist.storage.lock.LockManager in project exist by eXist-db.

the class InMemoryOutputStream method stream.

public void stream(final XmldbURL xmldbURL, final InputStream is, @Deprecated final int length) throws IOException {
    BrokerPool db;
    try {
        db = BrokerPool.getInstance();
    } catch (EXistException e) {
        throw new IOException(e);
    }
    try (final DBBroker broker = db.getBroker()) {
        final XmldbURI collectionUri = XmldbURI.create(xmldbURL.getCollection());
        final XmldbURI documentUri = XmldbURI.create(xmldbURL.getDocumentName());
        final TransactionManager transact = db.getTransactionManager();
        try (final Txn txn = transact.beginTransaction();
            final Collection collection = broker.getOrCreateCollection(txn, collectionUri)) {
            if (collection == null) {
                throw new IOException("Resource " + collectionUri.toString() + " is not a collection.");
            }
            final LockManager lockManager = db.getLockManager();
            txn.acquireCollectionLock(() -> lockManager.acquireCollectionWriteLock(collectionUri));
            if (collection.hasChildCollection(broker, documentUri)) {
                throw new IOException("Resource " + documentUri.toString() + " is a collection.");
            }
            try (final FilterInputStreamCache cache = FilterInputStreamCacheFactory.getCacheInstance(() -> (String) broker.getConfiguration().getProperty(Configuration.BINARY_CACHE_CLASS_PROPERTY), is);
                final CachingFilterInputStream cfis = new CachingFilterInputStream(cache)) {
                final MimeType mime = MimeTable.getInstance().getContentTypeFor(documentUri);
                try (final ManagedDocumentLock lock = lockManager.acquireDocumentWriteLock(documentUri)) {
                    broker.storeDocument(txn, documentUri, new CachingFilterInputStreamInputSource(cfis), mime, collection);
                }
            }
            txn.commit();
        }
    } catch (final IOException ex) {
        LOG.debug(ex);
        throw ex;
    } catch (final Exception ex) {
        LOG.debug(ex);
        throw new IOException(ex.getMessage(), ex);
    }
}

Example 13 with LockManager

use of org.exist.storage.lock.LockManager in project exist by eXist-db.

the class NewArrayNodeSet method lock.

@Override
public ManagedLocks<ManagedDocumentLock> lock(final DBBroker broker, final boolean exclusive) throws LockException {
    sort();
    final LockManager lockManager = broker.getBrokerPool().getLockManager();
    final ManagedDocumentLock[] managedDocumentLocks = new ManagedDocumentLock[documentCount];
    try {
        for (int idx = 0; idx < documentCount; idx++) {
            final DocumentImpl doc = nodes[documentNodesOffset[idx]].getOwnerDocument();
            final ManagedDocumentLock managedDocumentLock;
            if (exclusive) {
                managedDocumentLock = lockManager.acquireDocumentWriteLock(doc.getURI());
            } else {
                managedDocumentLock = lockManager.acquireDocumentReadLock(doc.getURI());
            }
            managedDocumentLocks[idx] = managedDocumentLock;
        }
        return new ManagedLocks<>(managedDocumentLocks);
    } catch (final LockException e) {
        // unlock any previously locked documents
        new ManagedLocks<>(managedDocumentLocks).close();
        throw e;
    }
}

Example 14 with LockManager

use of org.exist.storage.lock.LockManager in project exist by eXist-db.

the class ExtArrayNodeSet method lock.

@Override
public ManagedLocks<ManagedDocumentLock> lock(final DBBroker broker, final boolean exclusive) throws LockException {
    final LockManager lockManager = broker.getBrokerPool().getLockManager();
    final ManagedDocumentLock[] managedDocumentLocks = new ManagedDocumentLock[partCount];
    try {
        for (int i = 0; i < partCount; i++) {
            final DocumentImpl doc = parts[i].getOwnerDocument();
            final ManagedDocumentLock docLock;
            if (exclusive) {
                docLock = lockManager.acquireDocumentWriteLock(doc.getURI());
            } else {
                docLock = lockManager.acquireDocumentReadLock(doc.getURI());
            }
            managedDocumentLocks[i] = docLock;
        }
        return new ManagedLocks<>(managedDocumentLocks);
    } catch (final LockException e) {
        // unlock any previously locked documents
        new ManagedLocks<>(managedDocumentLocks).close();
        throw e;
    }
}