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

Example 6 with ManagedDocumentLock

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

the class Txn method acquireDocumentLock.

public void acquireDocumentLock(final SupplierE<ManagedDocumentLock, LockException> fnLockAcquire) throws LockException {
    final ManagedDocumentLock lock = fnLockAcquire.get();
    locksHeld.add(new LockInfo(lock, lock::close));
}

Example 7 with ManagedDocumentLock

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

the class RpcConnection method listDocumentPermissions.

private Map<String, List> listDocumentPermissions(final XmldbURI collUri) throws EXistException, PermissionDeniedException {
    return this.<Map<String, List>>readCollection(collUri).apply((collection, broker, transaction) -> {
        final Map<String, List> result = new HashMap<>(collection.getDocumentCount(broker));
        for (final Iterator<DocumentImpl> i = collection.iterator(broker); i.hasNext(); ) {
            final DocumentImpl doc = i.next();
            try (final ManagedDocumentLock documentLock = broker.getBrokerPool().getLockManager().acquireDocumentReadLock(doc.getURI())) {
                final Permission perm = doc.getPermissions();
                result.put(doc.getFileURI().toString(), toList(perm));
            }
        }
        return result;
    });
}

Example 8 with ManagedDocumentLock

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

the class RpcConnection method storeBinary.

private boolean storeBinary(final byte[] data, final XmldbURI docUri, final String mimeType, final int overwrite, final Date created, final Date modified) throws EXistException, PermissionDeniedException {
    return this.<Boolean>writeCollection(docUri.removeLastSegment()).apply((collection, broker, transaction) -> {
        // keep a write lock in the transaction
        transaction.acquireCollectionLock(() -> broker.getBrokerPool().getLockManager().acquireCollectionWriteLock(collection.getURI()));
        try (final ManagedDocumentLock lockedDocument = broker.getBrokerPool().getLockManager().acquireDocumentWriteLock(docUri)) {
            if (overwrite == 0) {
                // NOTE: we have the document write lock above
                final DocumentImpl old = collection.getDocument(broker, docUri.lastSegment());
                if (old != null) {
                    // NOTE: early release of Collection lock inline with Asymmetrical Locking scheme
                    collection.close();
                    throw new PermissionDeniedException("Old document exists and overwrite is not allowed");
                }
            }
            if (LOG.isDebugEnabled()) {
                LOG.debug("Storing binary resource to collection {}", collection.getURI());
            }
            broker.storeDocument(transaction, docUri.lastSegment(), new StringInputSource(data), MimeTable.getInstance().getContentType(mimeType), created, modified, null, null, null, collection);
            // NOTE: early release of Collection lock inline with Asymmetrical Locking scheme
            collection.close();
            return true;
        }
    });
}

Example 9 with ManagedDocumentLock

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

the class RpcConnection method parse.

private boolean parse(final byte[] xml, final XmldbURI docUri, final int overwrite, @Nullable final Date created, @Nullable final Date modified) throws EXistException, PermissionDeniedException {
    return this.<Boolean>writeCollection(docUri.removeLastSegment()).apply((collection, broker, transaction) -> {
        try (final ManagedDocumentLock lockedDocument = broker.getBrokerPool().getLockManager().acquireDocumentWriteLock(docUri)) {
            if (overwrite == 0) {
                // NOTE: we have the document write lock above
                final DocumentImpl old = collection.getDocument(broker, docUri.lastSegment());
                if (old != null) {
                    // NOTE: early release of Collection lock inline with Asymmetrical Locking scheme
                    collection.close();
                    throw new PermissionDeniedException("Document exists and overwrite is not allowed");
                }
            }
            final InputSource source = new StringInputSource(xml);
            final long startTime = System.currentTimeMillis();
            final MimeType mime = MimeTable.getInstance().getContentTypeFor(docUri.lastSegment());
            broker.storeDocument(transaction, docUri.lastSegment(), source, mime, created, modified, null, null, null, collection);
            // NOTE: early release of Collection lock inline with Asymmetrical Locking scheme
            collection.close();
            if (LOG.isDebugEnabled()) {
                LOG.debug("parsing {} took {}ms.", docUri, System.currentTimeMillis() - startTime);
            }
            return true;
        }
    });
}

Example 10 with ManagedDocumentLock

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

the class DocumentNameOrId method getResourceByAbsoluteId.

private Sequence getResourceByAbsoluteId(final IntegerValue ivAbsoluteId) throws XPathException, PermissionDeniedException, LockException, IOException {
    final BigInteger absoluteId = ivAbsoluteId.toJavaObject(BigInteger.class);
    final Tuple3<Integer, Integer, Byte> decoded = decodeAbsoluteResourceId(absoluteId);
    final DocumentImpl doc = context.getBroker().getResourceById(decoded._1, decoded._3, decoded._2);
    if (doc != null) {
        try (final ManagedDocumentLock docLock = context.getBroker().getBrokerPool().getLockManager().acquireDocumentReadLock(doc.getURI())) {
            if (doc instanceof BinaryDocument) {
                final BinaryDocument bin = (BinaryDocument) doc;
                final InputStream is = context.getBroker().getBinaryResource(bin);
                return Base64BinaryDocument.getInstance(context, is);
            } else {
                return new NodeProxy(doc);
            }
        }
    }
    return Sequence.EMPTY_SEQUENCE;
}