Examples with LockResult org.olat.core.util.coordinate.LockResult used on opensource projects

Example 26 with LockResult

use of org.olat.core.util.coordinate.LockResult in project openolat by klemens.

the class RepositoryEntryResource method getRepoFileById.

/**
 * Download the export zip file of a repository entry.
 * @response.representation.mediaType multipart/form-data
 * @response.representation.doc Download the resource file
 * @response.representation.200.mediaType application/zip
 * @response.representation.200.doc Download the repository entry as export zip file
 * @response.representation.200.example {@link org.olat.restapi.support.vo.Examples#SAMPLE_REPOENTRYVO}
 * @response.representation.401.doc The roles of the authenticated user are not sufficient
 * @response.representation.404.doc The resource could not found
 * @response.representation.406.doc Download of this resource is not possible
 * @response.representation.409.doc The resource is locked
 * @param repoEntryKey
 * @param request The HTTP request
 * @return
 */
@GET
@Path("file")
@Produces({ "application/zip", MediaType.APPLICATION_OCTET_STREAM })
public Response getRepoFileById(@PathParam("repoEntryKey") String repoEntryKey, @Context HttpServletRequest request) {
    RepositoryEntry re = lookupRepositoryEntry(repoEntryKey);
    if (re == null)
        return Response.serverError().status(Status.NOT_FOUND).build();
    RepositoryHandler typeToDownload = RepositoryHandlerFactory.getInstance().getRepositoryHandler(re);
    if (typeToDownload == null)
        return Response.serverError().status(Status.NOT_FOUND).build();
    OLATResource ores = OLATResourceManager.getInstance().findResourceable(re.getOlatResource());
    if (ores == null)
        return Response.serverError().status(Status.NOT_FOUND).build();
    Identity identity = getIdentity(request);
    boolean isAuthor = RestSecurityHelper.isAuthor(request);
    boolean isOwner = repositoryManager.isOwnerOfRepositoryEntry(identity, re);
    if (!(isAuthor | isOwner))
        return Response.serverError().status(Status.UNAUTHORIZED).build();
    boolean canDownload = re.getCanDownload() && typeToDownload.supportsDownload();
    if (!canDownload)
        return Response.serverError().status(Status.NOT_ACCEPTABLE).build();
    boolean isAlreadyLocked = typeToDownload.isLocked(ores);
    LockResult lockResult = null;
    try {
        lockResult = typeToDownload.acquireLock(ores, identity);
        if (lockResult == null || (lockResult != null && lockResult.isSuccess() && !isAlreadyLocked)) {
            MediaResource mr = typeToDownload.getAsMediaResource(ores, false);
            if (mr != null) {
                repositoryService.incrementDownloadCounter(re);
                // success
                return Response.ok(mr.getInputStream()).cacheControl(cc).build();
            } else
                return Response.serverError().status(Status.NO_CONTENT).build();
        } else
            return Response.serverError().status(Status.CONFLICT).build();
    } finally {
        if ((lockResult != null && lockResult.isSuccess() && !isAlreadyLocked))
            typeToDownload.releaseLock(lockResult);
    }
}

Example 27 with LockResult

use of org.olat.core.util.coordinate.LockResult in project openolat by klemens.

the class CatalogWebService method addCatalogEntry.

/**
 * Adds a catalog entry under the path specified in the URL.
 * @response.representation.qname {http://www.example.com}catalogEntryVO
 * @response.representation.mediaType application/xml, application/json
 * @response.representation.doc The catalog entry
 * @response.representation.example {@link org.olat.restapi.support.vo.Examples#SAMPLE_CATALOGENTRYVO}
 * @response.representation.200.qname {http://www.example.com}catalogEntryVO
 * @response.representation.200.mediaType application/xml, application/json
 * @response.representation.200.doc The list of catalog entry
 * @response.representation.200.example {@link org.olat.restapi.support.vo.Examples#SAMPLE_CATALOGENTRYVO}
 * @response.representation.401.doc Not authorized
 * @response.representation.404.doc The path could not be resolved to a valid catalog entry
 * @param path The path
 * @param entryVo The catalog entry
 * @param httpRquest The HTTP request
 * @param uriInfo The URI informations
 * @return The response
 */
@PUT
@Path("{path:.*}")
@Consumes({ MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON })
@Produces({ MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON })
public Response addCatalogEntry(@PathParam("path") List<PathSegment> path, CatalogEntryVO entryVo, @Context HttpServletRequest httpRequest, @Context UriInfo uriInfo) {
    if (!isAuthor(httpRequest)) {
        return Response.serverError().status(Status.UNAUTHORIZED).build();
    }
    Long parentKey = getCatalogEntryKeyFromPath(path);
    if (parentKey == null) {
        return Response.serverError().status(Status.NOT_ACCEPTABLE).build();
    }
    CatalogEntry parent = catalogManager.loadCatalogEntry(parentKey);
    if (parent == null) {
        return Response.serverError().status(Status.NOT_FOUND).build();
    }
    int type = guessType(entryVo);
    if (type == CatalogEntry.TYPE_NODE && !canAdminSubTree(parent, httpRequest)) {
        return Response.serverError().status(Status.UNAUTHORIZED).build();
    }
    RepositoryEntry re = null;
    if (entryVo.getRepositoryEntryKey() != null) {
        re = RepositoryManager.getInstance().lookupRepositoryEntry(entryVo.getRepositoryEntryKey());
        if (re == null) {
            return Response.serverError().status(Status.NOT_FOUND).build();
        }
    }
    Identity id = getUserRequest(httpRequest).getIdentity();
    LockResult lock = CoordinatorManager.getInstance().getCoordinator().getLocker().acquireLock(lockRes, id, LOCK_TOKEN);
    if (!lock.isSuccess()) {
        return getLockedResponse(lock, httpRequest);
    }
    CatalogEntry ce = null;
    try {
        ce = catalogManager.createCatalogEntry();
        ce.setType(guessType(entryVo));
        ce.setName(entryVo.getName());
        ce.setDescription(entryVo.getDescription());
        ce.setOwnerGroup(BaseSecurityManager.getInstance().createAndPersistSecurityGroup());
        if (re != null) {
            ce.setRepositoryEntry(re);
        }
        catalogManager.addCatalogEntry(parent, ce);
    } catch (Exception e) {
        throw new WebApplicationException(e);
    } finally {
        CoordinatorManager.getInstance().getCoordinator().getLocker().releaseLock(lock);
    }
    CatalogEntryVO newEntryVo = link(get(ce), uriInfo);
    return Response.ok(newEntryVo).build();
}

Example 28 with LockResult

use of org.olat.core.util.coordinate.LockResult in project openolat by klemens.

the class ClusterLocker method acquireLock.

@Override
public LockResult acquireLock(final OLATResourceable ores, final Identity requestor, final String locksubkey) {
    final String asset = OresHelper.createStringRepresenting(ores, locksubkey);
    LockResult res = syncer.doInSync(ores, new SyncerCallback<LockResult>() {

        @Override
        public LockResult execute() {
            LockResultImpl lres;
            LockImpl li = clusterLockManager.findLock(asset);
            if (li == null) {
                // fine, we can lock it
                li = clusterLockManager.createLockImpl(asset, requestor);
                clusterLockManager.saveLock(li);
                LockEntry le = new LockEntry(li.getAsset(), li.getCreationDate().getTime(), li.getOwner());
                lres = new LockResultImpl(true, le);
            } else {
                // already locked by a user.
                // if that user is us, we can reacquire it
                LockEntry le = new LockEntry(li.getAsset(), li.getCreationDate().getTime(), li.getOwner());
                if (requestor.getName().equals(li.getOwner().getName())) {
                    // that's us -> success (asset, owner is the same, and we leave creationdate to when the lock was originally acquired, not when it was reacquired.
                    lres = new LockResultImpl(true, le);
                } else {
                    lres = new LockResultImpl(false, le);
                }
            }
            return lres;
        }
    });
    return res;
}