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285 lines
11 KiB
Java
285 lines
11 KiB
Java
package org.gcube.data.access.storagehub.handlers;
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import java.util.Calendar;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.stream.Collectors;
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import javax.inject.Inject;
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import javax.inject.Singleton;
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import javax.jcr.ItemNotFoundException;
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import javax.jcr.Node;
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import javax.jcr.RepositoryException;
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import javax.jcr.Session;
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import javax.jcr.lock.LockException;
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import javax.jcr.version.Version;
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import org.gcube.common.authorization.library.AuthorizedTasks;
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import org.gcube.common.storagehub.model.Excludes;
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import org.gcube.common.storagehub.model.Paths;
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import org.gcube.common.storagehub.model.exceptions.BackendGenericError;
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import org.gcube.common.storagehub.model.exceptions.InvalidCallParameters;
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import org.gcube.common.storagehub.model.exceptions.ItemLockedException;
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import org.gcube.common.storagehub.model.exceptions.StorageHubException;
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import org.gcube.common.storagehub.model.items.AbstractFileItem;
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import org.gcube.common.storagehub.model.items.FolderItem;
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import org.gcube.common.storagehub.model.items.Item;
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import org.gcube.common.storagehub.model.items.TrashItem;
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import org.gcube.common.storagehub.model.items.nodes.Content;
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import org.gcube.common.storagehub.model.plugins.FolderManager;
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import org.gcube.common.storagehub.model.types.ItemAction;
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import org.gcube.data.access.storagehub.AuthorizationChecker;
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import org.gcube.data.access.storagehub.PathUtil;
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import org.gcube.data.access.storagehub.Utils;
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import org.gcube.data.access.storagehub.accounting.AccountingHandler;
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import org.gcube.data.access.storagehub.handlers.items.Item2NodeConverter;
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import org.gcube.data.access.storagehub.handlers.items.Node2ItemConverter;
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import org.gcube.data.access.storagehub.handlers.plugins.FolderPluginHandler;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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@Singleton
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public class TrashHandler {
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private static Logger log = LoggerFactory.getLogger(TrashHandler.class);
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ExecutorService executor = Executors.newFixedThreadPool(100);
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@Inject
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VersionHandler versionHandler;
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@Inject
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AuthorizationChecker authChecker;
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@Inject
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AccountingHandler accountingHandler;
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@Inject
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Item2NodeConverter item2Node;
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@Inject
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Node2ItemConverter node2Item;
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@Inject
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PathUtil pathUtil;
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@Inject FolderPluginHandler managerHandler;
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@Inject
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FolderPluginHandler folderHandler;
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public void removeNodes(Session ses, List<Item> itemsToDelete) throws RepositoryException, StorageHubException{
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log.debug("defnitively removing nodes with ids {}",itemsToDelete);
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for (Item item: itemsToDelete) {
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removeNodesInternally(ses, item, false);
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}
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}
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public void removeOnlyNodesContent(Session ses, List<Item> itemsToDelete) throws RepositoryException, StorageHubException{
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log.debug("defnitively removing nodes with ids {}",itemsToDelete);
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for (Item item: itemsToDelete) {
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removeNodesInternally(ses, item, true);
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}
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}
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private void retrieveContentsToDelete(Set<AbstractFileItem> itemsToDelete, Item itemToDelete) throws Exception{
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if (itemToDelete instanceof AbstractFileItem) {
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itemsToDelete.add(((AbstractFileItem) itemToDelete));
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}else if (itemToDelete instanceof FolderItem) {
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//only to be sure to not delete shared content
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if (itemToDelete.isShared()) return;
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List<Item> items = Utils.getItemList((Node) itemToDelete, Excludes.GET_ONLY_CONTENT , null, true, null);
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for (Item item: items)
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retrieveContentsToDelete(itemsToDelete, item);
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}
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}
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private void removeNodesInternally(Session ses, Item itemToDelete, boolean onlyContent) throws RepositoryException, StorageHubException {
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try {
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Set<AbstractFileItem> itemsToDelete = new HashSet<>();
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Node nodeToDelete = ses.getNodeByIdentifier(itemToDelete.getId());
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if (itemToDelete instanceof TrashItem) {
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List<Item> trashChildren = Utils.getItemList(nodeToDelete, Excludes.GET_ONLY_CONTENT, null, true, null);
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for (Item itemContentToRetrieve: trashChildren)
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retrieveContentsToDelete(itemsToDelete, itemContentToRetrieve);
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} else
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retrieveContentsToDelete(itemsToDelete, itemToDelete);
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if (!onlyContent)
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nodeToDelete.remove();
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String ids = itemsToDelete.stream().map((i) -> i.getId()).collect(Collectors.joining(","));
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log.debug("content ids to remove are {}",ids);
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Runnable deleteFromStorageRunnable = AuthorizedTasks.bind(new Runnable() {
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@Override
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public void run() {
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for (AbstractFileItem item: itemsToDelete ) {
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try {
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FolderManager manager = folderHandler.getFolderManager(item);
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manager.getStorageBackend().onDelete(item.getContent());
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List<Version> versions = versionHandler.getContentVersionHistory((Node)item.getRelatedNode());
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for (Version version: versions) {
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Content content = node2Item.getContent(version);
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manager.getStorageBackend().onDelete(content);
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}
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log.debug("file with id {} correctly removed from storage {}",item.getId(), manager.getClass().getSimpleName());
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}catch(Throwable t) {
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log.warn("error removing file with id {} from storage",item.getId(), t);
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}
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}
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}
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});
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executor.execute(deleteFromStorageRunnable);
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if (!onlyContent)
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ses.save();
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}catch (LockException e) {
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throw new ItemLockedException("the selected node or his parent is locked", e);
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}catch (Exception e) {
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throw new BackendGenericError("error permanetly deleting items",e);
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}
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}
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public void moveToTrash(Session ses, Node nodeToDelete, Item item, String login) throws RepositoryException, BackendGenericError{
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log.debug("moving node {} to trash ",item.getId());
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final Node trashFolder = ses.getNode(pathUtil.getTrashPath(login, ses).toPath());
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try {
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ses.getWorkspace().getLockManager().lock(trashFolder.getPath(), true, true, 0,login);
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ses.getWorkspace().getLockManager().lock(nodeToDelete.getPath(), true, true, 0,login);
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log.debug("preparing thrash item");
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TrashItem trashItem = new TrashItem();
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trashItem.setDeletedBy(login);
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trashItem.setDeletedFrom(nodeToDelete.getParent().getPath());
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Calendar now = Calendar.getInstance();
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trashItem.setDeletedTime(now);
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trashItem.setHidden(false);
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trashItem.setLastAction(ItemAction.CREATED);
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trashItem.setDescription("trash item of node " + nodeToDelete.getPath());
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trashItem.setParentId(trashFolder.getIdentifier());
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trashItem.setParentPath(trashFolder.getPath());
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//String pathUUid= UUID.randomUUID().toString();
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trashItem.setTitle(item.getTitle());
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trashItem.setName(item.getId());
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trashItem.setOriginalParentId(nodeToDelete.getParent().getIdentifier());
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trashItem.setOwner(login);
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trashItem.setLastModificationTime(item.getLastModificationTime());
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trashItem.setLastModifiedBy(item.getLastModifiedBy());
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trashItem.setLenght(0);
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if (item instanceof FolderItem) {
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trashItem.setFolder(true);
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}else if (item instanceof AbstractFileItem ) {
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AbstractFileItem file = (AbstractFileItem) item;
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if (file.getContent()!=null) {
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trashItem.setMimeType(file.getContent().getMimeType());
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trashItem.setLenght(file.getContent().getSize());
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}
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trashItem.setFolder(false);
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}
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log.debug("creating node");
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Node newTrashItemNode = item2Node.getNode(trashFolder, trashItem);
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ses.save();
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log.debug("calling jcr move");
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ses.getWorkspace().move(nodeToDelete.getPath(), Paths.append(Paths.getPath(newTrashItemNode.getPath()),nodeToDelete.getName()).toPath());
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String mimetype = null;
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if (item instanceof AbstractFileItem) {
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if (((AbstractFileItem)item).getContent()!=null)
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mimetype = ((AbstractFileItem) item).getContent().getMimeType();
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else log.warn("the AbstractFileItem with id {} has no content (check it!!)", item.getId());
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}
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accountingHandler.createFolderRemoveObj(item.getName(), item.getClass().getSimpleName(), mimetype, ses, login, (Node) item.getRelatedNode(), true);
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}catch(Throwable t) {
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log.error("error exceuting move to trash",t);
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throw new BackendGenericError(t);
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}finally {
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ses.getWorkspace().getLockManager().unlock(nodeToDelete.getPath());
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ses.getWorkspace().getLockManager().unlock(trashFolder.getPath());
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}
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}
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public String restoreItem(Session ses, TrashItem item, FolderItem destination, String login) throws RepositoryException, StorageHubException, BackendGenericError{
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log.debug("restoring node from trash with user ");
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//final Node trashFolder = ses.getNode(Paths.append(Utils.getHomePath(),Constants.TRASH_ROOT_FOLDER_NAME).toPath());
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Node destinationNode= null;
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if (destination==null) {
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boolean originalParentExists = true;
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boolean originalParentTrashed = false;
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Node originalParent = null;
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try {
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originalParent = ses.getNodeByIdentifier(item.getOriginalParentId());
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}catch (ItemNotFoundException e) {
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originalParentExists = false;
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}
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Item originalParentItem = null;
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if (originalParentExists) {
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originalParentItem = node2Item.getItem(originalParent, Excludes.ALL);
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originalParentTrashed = originalParentItem.isTrashed();
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}
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if(originalParentExists && !originalParentTrashed) {
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destinationNode = originalParent;
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}else {
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String homeWS = pathUtil.getWorkspacePath(login).toPath();
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Node node = ses.getNode(homeWS);
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destinationNode = node;
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}
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} else {
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Node node = (Node)destination.getRelatedNode();
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if (!node2Item.checkNodeType(node, FolderItem.class))
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throw new InvalidCallParameters("destination Node is not a folder");
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destinationNode = node;
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}
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authChecker.checkWriteAuthorizationControl(ses, login, destinationNode.getIdentifier(), true );
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ses.getWorkspace().getLockManager().lock(destinationNode.getPath(), true, true, 0,login);
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String newNodePath = null;
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try {
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//the real node is a child of the Trash node
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List<Item> items = Utils.getItemList(ses.getNodeByIdentifier(item.getId()), Excludes.ALL, null, false, null);
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if (items.size()!=1) {
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log.warn("a problem occurred restoring item from trash");
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throw new BackendGenericError("An error occurred on trash item");
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}
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Item itemToMove = items.get(0);
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item2Node.updateOwnerOnSubTree(ses.getNodeByIdentifier(itemToMove.getId()), login);
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String uniqueName = Utils.checkExistanceAndGetUniqueName(ses, destinationNode, itemToMove.getName());
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newNodePath = Paths.append(Paths.getPath(destinationNode.getPath()),uniqueName).toPath();
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ses.move(itemToMove.getPath(), newNodePath);
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Utils.setPropertyOnChangeNode(ses.getNode(newNodePath), login, ItemAction.MOVED);
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ses.removeItem(item.getPath());
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ses.save();
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}catch (Exception e) {
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if (ses.getWorkspace().getLockManager().isLocked(destinationNode.getPath()))
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ses.getWorkspace().getLockManager().unlock(destinationNode.getPath());
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}
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return ses.getNode(newNodePath).getIdentifier();
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}
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}
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