Examples with LockException org.exist.util.LockException used on opensource projects

Example 46 with LockException

use of org.exist.util.LockException in project exist by eXist-db.

the class HasIndex method eval.

@Override
public Sequence eval(final Sequence[] args, final Sequence contextSequence) throws XPathException {
    final String id = args[0].getStringValue();
    final SortIndexWorker index = (SortIndexWorker) context.getBroker().getIndexController().getWorkerByIndexId(SortIndex.ID);
    try {
        return BooleanValue.valueOf(index.hasIndex(id));
    } catch (final EXistException e) {
        throw new XPathException(this, e.getMessage(), e);
    } catch (final LockException e) {
        throw new XPathException(this, "Caught lock error while searching index. Giving up.", e);
    }
}

Example 47 with LockException

use of org.exist.util.LockException in project exist by eXist-db.

the class MutableCollection method getDescendants.

@Override
public List<Collection> getDescendants(final DBBroker broker, final Subject user) throws PermissionDeniedException {
    final ArrayList<Collection> collectionList = new ArrayList<>();
    final Iterator<XmldbURI> i;
    try (final ManagedCollectionLock collectionLock = lockManager.acquireCollectionReadLock(path)) {
        if (!getPermissionsNoLock().validate(broker.getCurrentSubject(), Permission.READ)) {
            throw new PermissionDeniedException("Permission to list sub-collections denied on " + this.getURI());
        }
        collectionList.ensureCapacity(subCollections.size());
        i = stableIterator(subCollections);
    } catch (final LockException e) {
        LOG.error(e.getMessage(), e);
        return Collections.emptyList();
    }
    while (i.hasNext()) {
        final XmldbURI childName = i.next();
        // TODO : resolve URI !
        final Collection child = broker.getCollection(path.append(childName));
        if (getPermissions().validate(user, Permission.READ)) {
            collectionList.add(child);
            if (child.getChildCollectionCount(broker) > 0) {
                // Recursive call
                collectionList.addAll(child.getDescendants(broker, user));
            }
        }
    }
    return collectionList;
}

Example 48 with LockException

use of org.exist.util.LockException in project exist by eXist-db.

the class MutableCollection method validateXMLResourceInternal.

/**
 * Validates an XML document et prepares it for further storage. Launches prepare and postValidate triggers.
 * Since the process is dependant from the collection configuration, the collection acquires a write lock during
 * the process.
 *
 * @param transaction The database transaction
 * @param broker      The database broker
 * @param name        the name (without path) of the document
 * @param validator   A function which validates the document of throws an Exception
 *
 * @return An {@link IndexInfo} with a write lock on the document.
 */
private IndexInfo validateXMLResourceInternal(final Txn transaction, final DBBroker broker, final XmldbURI name, final CollectionConfiguration config, final Consumer2E<IndexInfo, SAXException, EXistException> validator) throws EXistException, PermissionDeniedException, TriggerException, SAXException, LockException, IOException {
    // Make the necessary operations if we process a collection configuration document
    checkConfigurationDocument(transaction, broker, name);
    final Database db = broker.getBrokerPool();
    if (db.isReadOnly()) {
        throw new IOException("Database is read-only");
    }
    ManagedDocumentLock documentWriteLock = null;
    DocumentImpl oldDoc = null;
    db.getProcessMonitor().startJob(ProcessMonitor.ACTION_VALIDATE_DOC, name);
    try {
        try (final ManagedCollectionLock collectionLock = lockManager.acquireCollectionWriteLock(path)) {
            // acquire the WRITE_LOCK on the Document, this lock is released in storeXMLInternal via IndexInfo
            documentWriteLock = lockManager.acquireDocumentWriteLock(getURI().append(name.lastSegment()));
            oldDoc = documents.get(name.lastSegmentString());
            checkPermissionsForAddDocument(broker, oldDoc);
            // NOTE: the new `document` object actually gets discarded in favour of the `oldDoc` below if there is an oldDoc and it is XML (so we can use -1 as the docId because it will never be used)
            final int docId = (oldDoc != null && oldDoc.getResourceType() == DocumentImpl.XML_FILE) ? -1 : broker.getNextResourceId(transaction);
            DocumentImpl document = new DocumentImpl((BrokerPool) db, this, docId, name);
            checkCollectionConflict(name);
            manageDocumentInformation(oldDoc, document);
            final Indexer indexer = new Indexer(broker, transaction);
            final IndexInfo info = new IndexInfo(indexer, config, documentWriteLock);
            info.setCreating(oldDoc == null);
            info.setOldDocPermissions(oldDoc != null ? oldDoc.getPermissions() : null);
            indexer.setDocument(document, config);
            indexer.setValidating(true);
            final DocumentTriggers trigger = new DocumentTriggers(broker, transaction, indexer, this, broker.isTriggersEnabled() ? config : null);
            trigger.setValidating(true);
            info.setTriggers(trigger);
            if (oldDoc == null) {
                trigger.beforeCreateDocument(broker, transaction, getURI().append(name));
            } else {
                trigger.beforeUpdateDocument(broker, transaction, oldDoc);
            }
            if (LOG.isDebugEnabled()) {
                LOG.debug("Scanning document {}", getURI().append(name));
            }
            validator.accept(info);
            // new document is valid: remove old document
            if (oldDoc != null) {
                if (LOG.isDebugEnabled()) {
                    LOG.debug("removing old document {}", oldDoc.getFileURI());
                }
                updateModificationTime(document);
                /**
                 * Matching {@link StreamListener#endReplaceDocument(Txn)} call is in
                 * {@link #storeXMLInternal(Txn, DBBroker, IndexInfo, Consumer2E)}
                 */
                final StreamListener listener = broker.getIndexController().getStreamListener(document, StreamListener.ReindexMode.REPLACE_DOCUMENT);
                listener.startReplaceDocument(transaction);
                if (oldDoc.getResourceType() == DocumentImpl.BINARY_FILE) {
                    // TODO : use a more elaborated method ? No triggers...
                    broker.removeBinaryResource(transaction, (BinaryDocument) oldDoc);
                    documents.remove(oldDoc.getFileURI().lastSegmentString());
                    addDocument(transaction, broker, document);
                } else {
                    // TODO : use a more elaborated method ? No triggers...
                    broker.removeXMLResource(transaction, oldDoc, false);
                    oldDoc.copyOf(broker, document, oldDoc);
                    indexer.setDocumentObject(oldDoc);
                    // old has become new at this point
                    document = oldDoc;
                }
                if (LOG.isDebugEnabled()) {
                    LOG.debug("removed old document {}", oldDoc.getFileURI());
                }
            } else {
                addDocument(transaction, broker, document);
            }
            trigger.setValidating(false);
            return info;
        }
    } catch (final EXistException | PermissionDeniedException | SAXException | LockException | IOException e) {
        // if there is an exception and we hold the document WRITE_LOCK we must release it
        if (documentWriteLock != null) {
            documentWriteLock.close();
        }
        throw e;
    } finally {
        db.getProcessMonitor().endJob();
    }
}

Example 49 with LockException

use of org.exist.util.LockException in project exist by eXist-db.

the class MutableCollection method storeXMLInternal.

/**
 * Stores an XML document in the database. {@link #validateXMLResourceInternal(Txn, DBBroker, XmldbURI,
 * CollectionConfiguration, Consumer2E)}should have been called previously in order to acquire a write lock
 * for the document. Launches the finish trigger.
 *
 * @param transaction The database transaction
 * @param broker      The database broker
 * @param info        Tracks information between validate and store phases
 * @param parserFn    A function which parses the XML document
 */
private void storeXMLInternal(final Txn transaction, final DBBroker broker, final IndexInfo info, final Consumer2E<IndexInfo, EXistException, SAXException> parserFn) throws EXistException, SAXException, PermissionDeniedException {
    final DocumentImpl document = info.getIndexer().getDocument();
    final Database db = broker.getBrokerPool();
    try {
        if (LOG.isDebugEnabled()) {
            LOG.debug("storing document {} ...", document.getDocId());
        }
        // Sanity check
        if (!lockManager.isDocumentLockedForWrite(document.getURI())) {
            LOG.warn("document is not locked for write !");
        }
        db.getProcessMonitor().startJob(ProcessMonitor.ACTION_STORE_DOC, document.getFileURI());
        parserFn.accept(info);
        broker.storeXMLResource(transaction, document);
        broker.flush();
        broker.closeDocument();
        // broker.checkTree(document);
        LOG.debug("document stored.");
    } finally {
        // This lock has been acquired in validateXMLResourceInternal()
        info.getDocumentLock().close();
        broker.getBrokerPool().getProcessMonitor().endJob();
    }
    if (info.isCreating()) {
        info.getTriggers().afterCreateDocument(broker, transaction, document);
    } else {
        final StreamListener listener = broker.getIndexController().getStreamListener();
        listener.endReplaceDocument(transaction);
        info.getTriggers().afterUpdateDocument(broker, transaction, document);
    }
    db.getNotificationService().notifyUpdate(document, (info.isCreating() ? UpdateListener.ADD : UpdateListener.UPDATE));
    // Is it a collection configuration file ?
    final XmldbURI docName = document.getFileURI();
    // TODO: *resolve* URI against CollectionConfigurationManager.CONFIG_COLLECTION_URI
    if (getURI().startsWith(XmldbURI.CONFIG_COLLECTION_URI) && docName.endsWith(CollectionConfiguration.COLLECTION_CONFIG_SUFFIX_URI)) {
        broker.sync(Sync.MAJOR);
        final CollectionConfigurationManager manager = broker.getBrokerPool().getConfigurationManager();
        if (manager != null) {
            try {
                manager.invalidate(getURI(), broker.getBrokerPool());
                manager.loadConfiguration(broker, this);
            } catch (final PermissionDeniedException | LockException pde) {
                throw new EXistException(pde.getMessage(), pde);
            } catch (final CollectionConfigurationException e) {
                // DIZ: should this exception really been thrown? bugid=1807744
                throw new EXistException("Error while reading new collection configuration: " + e.getMessage(), e);
            }
        }
    }
}

Example 50 with LockException

use of org.exist.util.LockException in project exist by eXist-db.

the class STXTransformerTrigger method configure.

@Override
public void configure(DBBroker broker, Txn transaction, Collection parent, Map<String, List<?>> parameters) throws TriggerException {
    super.configure(broker, transaction, parent, parameters);
    final String stylesheet = (String) parameters.get("src").get(0);
    if (stylesheet == null) {
        throw new TriggerException("STXTransformerTrigger requires an attribute 'src'");
    }
    /*
        String origProperty = System.getProperty("javax.xml.transform.TransformerFactory");
        System.setProperty("javax.xml.transform.TransformerFactory",  "net.sf.joost.trax.TransformerFactoryImpl");
        factory = (SAXTransformerFactory)TransformerFactory.newInstance();
        // reset property to previous setting
        if(origProperty != null) {
                System.setProperty("javax.xml.transform.TransformerFactory", origProperty);
        }
         */
    /*ServiceLoader<TransformerFactory> loader = ServiceLoader.load(TransformerFactory.class);
        for(TransformerFactory transformerFactory : loader) {
            if(transformerFactory.getClass().getName().equals("net.sf.joost.trax.TransformerFactoryImpl")) {
                    factory = transformerFactory.ne
            }
        }*/
    XmldbURI stylesheetUri = null;
    try {
        stylesheetUri = XmldbURI.xmldbUriFor(stylesheet);
    } catch (final URISyntaxException e) {
    }
    // TODO: allow full XmldbURIs to be used as well.
    if (stylesheetUri == null || stylesheet.indexOf(':') == Constants.STRING_NOT_FOUND) {
        stylesheetUri = parent.getURI().resolveCollectionPath(stylesheetUri);
        DocumentImpl doc;
        try {
            doc = (DocumentImpl) broker.getXMLResource(stylesheetUri);
            if (doc == null) {
                throw new TriggerException("stylesheet " + stylesheetUri + " not found in database");
            }
            if (doc instanceof BinaryDocument) {
                throw new TriggerException("stylesheet " + stylesheetUri + " must be stored as an xml document and not a binary document!");
            }
            handler = factory.newTransformerHandler(STXTemplatesCache.getInstance().getOrUpdateTemplate(broker, doc));
        } catch (final TransformerConfigurationException | PermissionDeniedException | SAXException | LockException e) {
            throw new TriggerException(e.getMessage(), e);
        }
    } else {
        try {
            LOG.debug("compiling stylesheet {}", stylesheet);
            final Templates template = factory.newTemplates(new StreamSource(stylesheet));
            handler = factory.newTransformerHandler(template);
        } catch (final TransformerConfigurationException e) {
            throw new TriggerException(e.getMessage(), e);
        }
    }
}