Examples with MCRPath org.mycore.datamodel.niofs.MCRPath used on opensource projects

Example 1 with MCRPath

use of org.mycore.datamodel.niofs.MCRPath in project mycore by MyCoRe-Org.

the class MCRFileNodeServlet method getContent.

/* (non-Javadoc)
     * @see org.mycore.frontend.servlets.MCRContentServlet#getContent(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     */
@Override
public MCRContent getContent(HttpServletRequest request, HttpServletResponse response) throws IOException {
    if (!isParametersValid(request, response)) {
        return null;
    }
    String ownerID = getOwnerID(request);
    if (!MCRAccessManager.checkPermissionForReadingDerivate(ownerID)) {
        LOGGER.info("AccessForbidden to {}", request.getPathInfo());
        response.sendError(HttpServletResponse.SC_FORBIDDEN);
        return null;
    }
    String path = getPath(request);
    MCRPath mcrPath = MCRPath.getPath(ownerID, path);
    BasicFileAttributes attr;
    try {
        attr = Files.readAttributes(mcrPath, BasicFileAttributes.class);
    } catch (NoSuchFileException e) {
        String msg = e.getMessage();
        if (msg == null) {
            msg = "File or directory not found: " + mcrPath;
        }
        response.sendError(HttpServletResponse.SC_NOT_FOUND, msg);
        return null;
    }
    if (attr.isDirectory()) {
        try {
            return sendDirectory(request, response, mcrPath);
        } catch (TransformerException | SAXException e) {
            throw new IOException(e);
        }
    }
    if (attr.isRegularFile()) {
        return sendFile(request, response, mcrPath);
    }
    response.sendError(HttpServletResponse.SC_NOT_FOUND, "Not a file or directory: " + mcrPath);
    return null;
}

Example 2 with MCRPath

use of org.mycore.datamodel.niofs.MCRPath in project mycore by MyCoRe-Org.

the class MCRMetadataManager method create.

/**
 * Stores the derivate.
 *
 * @param mcrDerivate
 *            derivate instance to store
 * @throws MCRPersistenceException
 *            if a persistence problem is occurred
 * @throws MCRAccessException
 *            if write permission to object is missing
 */
public static void create(final MCRDerivate mcrDerivate) throws MCRPersistenceException, MCRAccessException {
    if (exists(mcrDerivate.getId())) {
        throw new MCRPersistenceException("The derivate " + mcrDerivate.getId() + " already exists, nothing done.");
    }
    try {
        mcrDerivate.validate();
    } catch (MCRException exc) {
        throw new MCRPersistenceException("The derivate " + mcrDerivate.getId() + " is not valid.", exc);
    }
    final MCRObjectID objid = mcrDerivate.getDerivate().getMetaLink().getXLinkHrefID();
    if (!MCRAccessManager.checkPermission(objid, PERMISSION_WRITE)) {
        throw MCRAccessException.missingPermission("Add derivate " + mcrDerivate.getId() + " to object.", objid.toString(), PERMISSION_WRITE);
    }
    byte[] objectBackup;
    try {
        objectBackup = MCRXMLMetadataManager.instance().retrieveBLOB(objid);
    } catch (IOException ioExc) {
        throw new MCRPersistenceException("Unable to retrieve xml blob of " + objid);
    }
    if (objectBackup == null) {
        throw new MCRPersistenceException("Cannot find " + objid + " to attach derivate " + mcrDerivate.getId() + " to it.");
    }
    // prepare the derivate metadata and store under the XML table
    if (mcrDerivate.getService().getDate("createdate") == null || !mcrDerivate.isImportMode()) {
        mcrDerivate.getService().setDate("createdate");
    }
    if (mcrDerivate.getService().getDate("modifydate") == null || !mcrDerivate.isImportMode()) {
        mcrDerivate.getService().setDate("modifydate");
    }
    // handle events
    fireEvent(mcrDerivate, null, MCREvent.CREATE_EVENT);
    // add the link to metadata
    final MCRMetaLinkID der = new MCRMetaLinkID();
    der.setReference(mcrDerivate.getId().toString(), null, mcrDerivate.getLabel());
    der.setSubTag("derobject");
    try {
        if (LOGGER.isDebugEnabled()) {
            LOGGER.debug("adding Derivate in data store");
        }
        MCRMetadataManager.addOrUpdateDerivateToObject(objid, der);
    } catch (final Exception e) {
        MCRMetadataManager.restore(mcrDerivate, objid, objectBackup);
        // throw final exception
        throw new MCRPersistenceException("Error while creatlink to MCRObject " + objid + ".", e);
    }
    // create data in IFS
    if (mcrDerivate.getDerivate().getInternals() != null) {
        MCRObjectID derId = mcrDerivate.getId();
        MCRPath rootPath = MCRPath.getPath(derId.toString(), "/");
        if (mcrDerivate.getDerivate().getInternals().getSourcePath() == null) {
            try {
                rootPath.getFileSystem().createRoot(rootPath.getOwner());
                BasicFileAttributes attrs = Files.readAttributes(rootPath, BasicFileAttributes.class);
                if (!(attrs.fileKey() instanceof String)) {
                    throw new MCRPersistenceException("Cannot get ID from newely created directory, as it is not a String." + rootPath);
                }
                mcrDerivate.getDerivate().getInternals().setIFSID(attrs.fileKey().toString());
            } catch (IOException ioExc) {
                throw new MCRPersistenceException("Cannot create root of '" + rootPath.getOwner() + "' or read the file attributes.", ioExc);
            }
        } else {
            final String sourcepath = mcrDerivate.getDerivate().getInternals().getSourcePath();
            final File f = new File(sourcepath);
            if (f.exists()) {
                try {
                    if (LOGGER.isDebugEnabled()) {
                        LOGGER.debug("Starting File-Import");
                    }
                    importDerivate(derId.toString(), f.toPath());
                    BasicFileAttributes attrs = Files.readAttributes(rootPath, BasicFileAttributes.class);
                    if (!(attrs.fileKey() instanceof String)) {
                        throw new MCRPersistenceException("Cannot get ID from newely created directory, as it is not a String." + rootPath);
                    }
                    mcrDerivate.getDerivate().getInternals().setIFSID(attrs.fileKey().toString());
                } catch (final Exception e) {
                    if (Files.exists(rootPath)) {
                        deleteDerivate(derId.toString());
                    }
                    MCRMetadataManager.restore(mcrDerivate, objid, objectBackup);
                    throw new MCRPersistenceException("Can't add derivate to the IFS", e);
                }
            } else {
                LOGGER.warn("Empty derivate, the File or Directory -->{}<--  was not found.", sourcepath);
            }
        }
    }
}

Example 3 with MCRPath

use of org.mycore.datamodel.niofs.MCRPath in project mycore by MyCoRe-Org.

the class MCRFileMetaEventHandler method handlePathDeleted.

@Override
protected void handlePathDeleted(MCREvent evt, Path path, BasicFileAttributes attrs) {
    if (attrs.isDirectory()) {
        return;
    }
    MCRPath mcrPath = MCRPath.toMCRPath(path);
    MCRObjectID derivateID = MCRObjectID.getInstance(mcrPath.getOwner());
    if (!MCRMetadataManager.exists(derivateID)) {
        LOGGER.warn("Derivate {} from file '{}' does not exist.", derivateID, path);
        return;
    }
    MCRDerivate derivate = MCRMetadataManager.retrieveMCRDerivate(derivateID);
    MCRObjectDerivate objectDerivate = derivate.getDerivate();
    if (objectDerivate.deleteFileMetaData('/' + path.subpath(0, path.getNameCount()).toString())) {
        try {
            MCRMetadataManager.update(derivate);
        } catch (MCRPersistenceException | MCRAccessException e) {
            throw new MCRPersistenceException("Could not update derivate: " + derivateID, e);
        }
    }
}

Example 4 with MCRPath

use of org.mycore.datamodel.niofs.MCRPath in project mycore by MyCoRe-Org.

the class MCRFileMetaEventHandler method handleDerivateUpdated.

@Override
protected void handleDerivateUpdated(MCREvent evt, MCRDerivate der) {
    HashSet<MCRCategLinkReference> before = new HashSet<>();
    before.addAll(CATEGLINK_SERVICE.getReferences(der.getId().toString()));
    handleDerivateDeleted(evt, der);
    handleDerivateCreated(evt, der);
    HashSet<MCRCategLinkReference> after = new HashSet<>();
    after.addAll(CATEGLINK_SERVICE.getReferences(der.getId().toString()));
    HashSet<MCRCategLinkReference> combined = new HashSet<>(before);
    combined.addAll(after);
    for (MCRCategLinkReference ref : combined) {
        MCRObjectID derId = der.getId();
        String path = ref.getObjectID();
        MCRPath file = MCRPath.getPath(derId.toString(), path);
        BasicFileAttributes attrs;
        try {
            attrs = Files.readAttributes(file, BasicFileAttributes.class);
        } catch (IOException e) {
            LOGGER.warn("File is linked to category but cannot be read:{}{}", der.getId(), ref.getObjectID(), e);
            continue;
        }
        MCREvent fileEvent = new MCREvent(MCREvent.PATH_TYPE, MCREvent.INDEX_EVENT);
        fileEvent.put(MCREvent.PATH_KEY, file);
        fileEvent.put(MCREvent.FILEATTR_KEY, attrs);
        MCREventManager.instance().handleEvent(fileEvent);
    }
}

Example 5 with MCRPath

use of org.mycore.datamodel.niofs.MCRPath in project mycore by MyCoRe-Org.

the class MCRMigrationCommands method fixDerivateLinks.

@MCRCommand(syntax = "fix invalid derivate links {0} for {1}", help = "Fixes the paths of all derivate links " + "({0} -> xpath -> e.g. /mycoreobject/metadata/derivateLinks/derivateLink) for object {1}. (MCR-1267)", order = 15)
public static void fixDerivateLinks(String xpath, String id) throws IOException, JDOMException, SAXException {
    // get mcr object
    MCRObjectID objectID = MCRObjectID.getInstance(id);
    // find derivate links
    Document xml = MCRXMLMetadataManager.instance().retrieveXML(objectID);
    Element mcrObjectXML = xml.getRootElement();
    XPathExpression<Element> expression = XPathFactory.instance().compile(xpath, Filters.element());
    List<Element> derivateLinkElements = expression.evaluate(mcrObjectXML);
    // check them
    boolean changedObject = false;
    for (Element derivateLinkElement : derivateLinkElements) {
        String href = derivateLinkElement.getAttributeValue("href", MCRConstants.XLINK_NAMESPACE);
        MCRMetaDerivateLink link = new MCRMetaDerivateLink();
        link.setReference(href, null, null);
        String owner = link.getOwner();
        try {
            String path = link.getPath();
            MCRPath mcrPath = MCRPath.getPath(owner, path);
            if (!Files.exists(mcrPath)) {
                // -> e.g. a?c.tif -> path (a), query (c.tif) which is obvious wrong
                if (tryRawPath(objectID, derivateLinkElement, href, link, owner)) {
                    changedObject = true;
                } else {
                    LOGGER.warn("{} of {}cannot be found on file system. This is most likly a dead link.", href, objectID);
                }
            }
        } catch (URISyntaxException uriExc) {
            // not encoded properly
            if (tryRawPath(objectID, derivateLinkElement, href, link, owner)) {
                changedObject = true;
            } else {
                LOGGER.warn("{} of {} isn't URI encoded and cannot be found on file system. This is most likly a dead link.", href, objectID);
            }
        }
    }
    // store the mcr object if its changed
    if (changedObject) {
        // we use MCRXMLMetadataMananger because we don't want to validate the old mcr object
        MCRXMLMetadataManager.instance().update(objectID, xml, new Date());
        // manually fire update event
        MCRObject newObject = MCRMetadataManager.retrieveMCRObject(objectID);
        newObject.setImportMode(true);
        MCRMetadataManager.fireUpdateEvent(newObject);
    }
}