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Application Listener add to correctly shutdown the jackrabbit repository

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master
lucio 4 years ago
parent c1ab8333b8
commit 188d11ff70
9 changed files with 173 additions and 64 deletions
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2
.settings/org.eclipse.wst.common.component
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@ -7,7 +7,7 @@
<dependent-module archiveName="authorization-control-library-1.1.0-SNAPSHOT.jar" deploy-path="/WEB-INF/lib" handle="module:/resource/authorization-control-library/authorization-control-library">
<dependency-type>uses</dependency-type>
</dependent-module>
<dependent-module archiveName="storagehub-model-1.0.5-SNAPSHOT.jar" deploy-path="/WEB-INF/lib" handle="module:/resource/storagehub-model/storagehub-model">
<dependent-module archiveName="storagehub-model-1.0.6-SNAPSHOT.jar" deploy-path="/WEB-INF/lib" handle="module:/resource/storagehub-model/storagehub-model">
<dependency-type>uses</dependency-type>
</dependent-module>
<property name="context-root" value="storagehub"/>

1
src/main/java/org/gcube/data/access/storagehub/StorageHub.java
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@ -32,6 +32,7 @@ public class StorageHub extends Application {
classes.add(UserManager.class);
classes.add(GroupManager.class);
classes.add(SerializableErrorEntityTextWriter.class);
classes.add(MyApplicationListener.class);
return classes;
}

38
src/main/java/org/gcube/data/access/storagehub/Utils.java
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@ -26,6 +26,7 @@ import javax.jcr.query.Query;
import javax.jcr.version.Version;
import org.apache.commons.io.FilenameUtils;
import org.apache.jackrabbit.util.ISO9075;
import org.apache.jackrabbit.util.Text;
import org.gcube.common.authorization.library.provider.AuthorizationProvider;
import org.gcube.common.scope.api.ScopeProvider;
@ -109,15 +110,30 @@ public class Utils {
}
public static <T extends Item> List<T> serachByNameOnFolder(Session ses, Node parent, List<String> excludes, Range range, boolean showHidden, Class<? extends Item> nodeTypeToInclude, String nameParam) throws RepositoryException, BackendGenericError{
String xpath = String.format("/jcr:root%s//element(*,nthl:workspaceItem)[jcr:like(@jcr:title, '%s')]",ISO9075.encodePath(parent.getPath()), nameParam);
public static <T extends Item> List<T> getItemList(Node parent, List<String> excludes, Range range, boolean showHidden, Class<? extends Item> nodeTypeToInclude) throws RepositoryException, BackendGenericError{
//String query = String.format("SELECT * FROM [nthl:workspaceLeafItem] AS node WHERE ISDESCENDANTNODE('%s') ORDER BY node.[jcr:lastModified] DESC ",vreFolder.getPath());
logger.trace("query for search is {}",xpath);
logger.debug("getting children of node {}", parent.getIdentifier());
Query jcrQuery = ses.getWorkspace().getQueryManager().createQuery(xpath, Query.XPATH);
List<T> returnList = new ArrayList<T>();
NodeIterator it = jcrQuery.execute().getNodes();
return getItemListFromNodeIterator(it, excludes, range, showHidden, nodeTypeToInclude);
}
public static <T extends Item> List<T> getItemList(Node parent, List<String> excludes, Range range, boolean showHidden, Class<? extends Item> nodeTypeToInclude) throws RepositoryException, BackendGenericError{
logger.trace("getting children of node {}", parent.getIdentifier());
long start = System.currentTimeMillis();
NodeIterator iterator = parent.getNodes();
logger.trace("time to get iterator {}",(System.currentTimeMillis()-start));
return getItemListFromNodeIterator(iterator, excludes, range, showHidden, nodeTypeToInclude);
}
private static <T extends Item> List<T> getItemListFromNodeIterator(NodeIterator iterator, List<String> excludes, Range range, boolean showHidden, Class<? extends Item> nodeTypeToInclude) throws RepositoryException, BackendGenericError{
List<T> returnList = new ArrayList<T>();
logger.trace("nodeType is {}",nodeTypeToInclude);
int count =0;
logger.trace("selected range is {}", range);
@ -125,12 +141,12 @@ public class Utils {
while (iterator.hasNext()){
Node current = iterator.nextNode();
logger.debug("current node "+current.getName());
logger.trace("current node "+current.getName());
if (isToExclude(current, showHidden))
continue;
logger.debug("current node not excluded "+current.getName());
logger.trace("current node not excluded "+current.getName());
if (range==null || (count>=range.getStart() && returnList.size()<range.getLimit())) {
T item = node2Item.getFilteredItem(current, excludes, nodeTypeToInclude);
@ -166,13 +182,13 @@ public class Utils {
Node currentNode = session.getNodeByIdentifier(directory.getId());
queue.push(directory);
Deque<Item> tempQueue = new LinkedList<Item>();
logger.debug("adding directory {}",currentNode.getPath());
logger.trace("adding directory {}",currentNode.getPath());
for (Item item : Utils.getItemList(currentNode,Excludes.GET_ONLY_CONTENT, null, false, null)){
if (excludes.contains(item.getId())) continue;
if (item instanceof FolderItem)
tempQueue.addAll(getAllNodesForZip((FolderItem) item, session, accountingHandler, excludes));
else if (item instanceof AbstractFileItem){
logger.debug("adding file {}",item.getPath());
logger.trace("adding file {}",item.getPath());
AbstractFileItem fileItem = (AbstractFileItem) item;
accountingHandler.createReadObj(fileItem.getTitle(), session, session.getNodeByIdentifier(item.getId()), false);
queue.addLast(item);
@ -190,9 +206,9 @@ public class Utils {
Item item = queue.pop();
if (item instanceof FolderItem) {
actualPath = Paths.getPath(item.getPath());
logger.debug("actualPath is {}",actualPath.toPath());
logger.trace("actualPath is {}",actualPath.toPath());
String name = Paths.remove(actualPath, originalPath).toPath().replaceFirst("/", "");
logger.debug("writing dir {}",name);
logger.trace("writing dir {}",name);
if (name.isEmpty()) continue;
try {
zos.putNextEntry(new ZipEntry(name));
@ -208,7 +224,7 @@ public class Utils {
}
try(BufferedInputStream is = new BufferedInputStream(streamToWrite)){
String name = (Paths.remove(actualPath, originalPath).toPath()+item.getName()).replaceFirst("/", "");
logger.debug("writing file {}",name);
logger.trace("writing file {}",name);
zos.putNextEntry(new ZipEntry(name));
copyStream(is, zos);
}catch (Exception e) {
@ -285,7 +301,7 @@ public class Utils {
String nameTocheck = ext.isEmpty()? String.format("%s(*)",filename): String.format("%s(*).%s",filename, ext);
logger.debug("filename is {}, extension is {} , and name to check is {}", filename, ext, nameTocheck);
logger.trace("filename is {}, extension is {} , and name to check is {}", filename, ext, nameTocheck);
NodeIterator ni = destination.getNodes(nameTocheck);
int maxval = 0;

6
src/main/java/org/gcube/data/access/storagehub/handlers/Item2NodeConverter.java
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@ -56,7 +56,7 @@ public class Item2NodeConverter {
field.setAccessible(true);
try{
//Class<?> returnType = field.getType();
logger.debug("creating node - added field {}",field.getName());
logger.trace("creating node - added field {}",field.getName());
Values values = getObjectValue(field.getType(), field.get(item));
if (values.isMulti()) newNode.setProperty(attribute.value(), values.getValues());
else newNode.setProperty(attribute.value(), values.getValue());
@ -67,7 +67,7 @@ public class Item2NodeConverter {
NodeAttribute nodeAttribute = field.getAnnotation(NodeAttribute.class);
if (nodeAttribute.isReadOnly()) continue;
String nodeName = nodeAttribute.value();
logger.debug("retrieving field node "+field.getName());
logger.trace("retrieving field node "+field.getName());
field.setAccessible(true);
try{
Object obj = field.get(item);
@ -129,7 +129,7 @@ public class Item2NodeConverter {
}
} else if (field.isAnnotationPresent(ListNodes.class)){
logger.debug("found field {} of type annotated as ListNodes in class {} on node {}", field.getName(), object.getClass().getName(), newNode.getName());
logger.trace("found field {} of type annotated as ListNodes in class {} on node {}", field.getName(), object.getClass().getName(), newNode.getName());
field.setAccessible(true);
List<Object> toSetList = (List<Object>) field.get(object);

4
src/main/java/org/gcube/data/access/storagehub/handlers/Node2ItemConverter.java
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@ -127,7 +127,7 @@ public class Node2ItemConverter {
try{
Class<?> returnType = field.getType();
field.set(item, getPropertyValue(returnType, node.getProperty(attribute.value())));
logger.debug("retrieve item - added field {}",field.getName());
logger.trace("retrieve item - added field {}",field.getName());
}catch(PathNotFoundException e){
logger.trace("the current node dosn't contain {} property",attribute.value());
} catch (Exception e ) {
@ -320,7 +320,7 @@ public class Node2ItemConverter {
public boolean checkNodeType(Node node, Class<? extends Item> classToCompare) throws BackendGenericError{
try {
logger.info("class from nodetype is {} and class to compare is {}",ClassHandler.instance().get(node.getPrimaryNodeType().getName()), classToCompare);
logger.trace("class from nodetype is {} and class to compare is {}",ClassHandler.instance().get(node.getPrimaryNodeType().getName()), classToCompare);
return classToCompare.isAssignableFrom(ClassHandler.instance().get(node.getPrimaryNodeType().getName()));

67
src/main/java/org/gcube/data/access/storagehub/handlers/VREQueryRetriever.java
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@ -1,9 +1,13 @@
package org.gcube.data.access.storagehub.handlers;
import java.text.SimpleDateFormat;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.concurrent.Callable;
import javax.jcr.Credentials;
@ -17,10 +21,11 @@ import javax.jcr.observation.Event;
import javax.jcr.observation.EventJournal;
import javax.jcr.query.Query;
import org.apache.jackrabbit.util.ISO9075;
import org.gcube.common.storagehub.model.Excludes;
import org.gcube.common.storagehub.model.NodeConstants;
import org.gcube.common.storagehub.model.items.Item;
import org.gcube.data.access.storagehub.Constants;
import org.gcube.common.storagehub.model.types.NodeProperty;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ -29,7 +34,7 @@ public class VREQueryRetriever implements Callable<List<Item>> {
private static final Logger logger = LoggerFactory.getLogger(VREQueryRetriever.class);
private static final int CACHE_DIMENSION = 50;
private Repository repository;
private Credentials credentials;
private Item vreFolder;
@ -37,7 +42,7 @@ public class VREQueryRetriever implements Callable<List<Item>> {
long lastTimestamp =0;
private Node2ItemConverter node2Item = new Node2ItemConverter();
public VREQueryRetriever(Repository repository, Credentials credentials, Item vreFolder) {
super();
@ -53,20 +58,50 @@ public class VREQueryRetriever implements Callable<List<Item>> {
try {
long start = System.currentTimeMillis();
ses = repository.login(credentials);
String query = String.format("SELECT * FROM [nthl:workspaceLeafItem] AS node WHERE ISDESCENDANTNODE('%s') ORDER BY node.[jcr:lastModified] DESC ",vreFolder.getPath());
logger.trace("query for recents is {}",query);
Query jcrQuery = ses.getWorkspace().getQueryManager().createQuery(query, Constants.QUERY_LANGUAGE);
Calendar now = Calendar.getInstance();
now.add(Calendar.YEAR, -1);
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS", Locale.ENGLISH);
String formattedDate = formatter.format(now.getTime());
String xpath = String.format("/jcr:root%s//element(*,nthl:workspaceLeafItem)[@jcr:lastModified>xs:dateTime('%s')] order by @jcr:lastModified descending",ISO9075.encodePath(vreFolder.getPath()),formattedDate);
//String query = String.format("SELECT * FROM [nthl:workspaceLeafItem] AS node WHERE ISDESCENDANTNODE('%s') ORDER BY node.[jcr:lastModified] DESC ",vreFolder.getPath());
logger.debug("query for recents is {}",xpath);
Query jcrQuery = ses.getWorkspace().getQueryManager().createQuery(xpath, Query.XPATH);
jcrQuery.setLimit(CACHE_DIMENSION);
lastTimestamp = System.currentTimeMillis();
NodeIterator it = jcrQuery.execute().getNodes();
logger.trace("query for recents took {}",System.currentTimeMillis()-start);
logger.debug("query for recents took {}",System.currentTimeMillis()-start);
while (it.hasNext()) {
Node node = it.nextNode();
Item item =node2Item.getItem(node, Excludes.EXCLUDE_ACCOUNTING);
//long lastModifiedTimeItem = node.getProperty(NodeProperty.LAST_MODIFIED.toString()).getLong();
//logger.debug("RECENTS - node {} has timestamp {} ", node.getProperty(NodeProperty.TITLE.toString()).getString(), lastModifiedTimeItem);
/*
if(cachedList.size()<=CACHE_DIMENSION || lastModifiedTimeItem>cachedList.get(CACHE_DIMENSION-1).getLastModificationTime().getTimeInMillis()) {
logger.debug("cachedList contains {}",cachedList.size());
if(cachedList.size()>=CACHE_DIMENSION) cachedList.remove(CACHE_DIMENSION-1);
Item item =node2Item.getItem(node, Excludes.EXCLUDE_ACCOUNTING);
int insertposition =0;
for(Item cachedItem: cachedList) {
if (cachedItem.getLastModificationTime().before(item.getLastModificationTime()))
break;
insertposition++;
}
cachedList.add(insertposition, item);
logger.debug("RECENTS - adding item {} with node {} in position {}",item.getTitle(), node.getName(), insertposition);
}*/
Item item = node2Item.getItem(node, Excludes.EXCLUDE_ACCOUNTING);
logger.debug("RECENTS - adding item {} with timestamp {}",item.getTitle(), item.getLastModificationTime().getTimeInMillis());
cachedList.add(item);
logger.trace("adding item {} with node {}",item.getTitle(), node.getName());
}
logger.trace("creating objects took {}",System.currentTimeMillis()-start);
logger.debug("creating objects took {}",System.currentTimeMillis()-start);
if (cachedList.size()<=10) return cachedList;
else return cachedList.subList(0, 10);
} catch (Exception e) {
@ -79,7 +114,7 @@ public class VREQueryRetriever implements Callable<List<Item>> {
}
} else {
try {
long timestampToUse = lastTimestamp;
lastTimestamp = System.currentTimeMillis();
@ -89,16 +124,16 @@ public class VREQueryRetriever implements Callable<List<Item>> {
EventJournal journalChanged = ses.getWorkspace().getObservationManager().getEventJournal(Event.PROPERTY_CHANGED^Event.NODE_REMOVED^Event.NODE_MOVED^Event.NODE_ADDED, vreFolder.getPath(), true, null, types);
journalChanged.skipTo(timestampToUse);
logger.trace("getting the journal took {}",System.currentTimeMillis()-start);
int events = 0;
while (journalChanged.hasNext()) {
events++;
Event event = journalChanged.nextEvent();
switch(event.getType()) {
case Event.NODE_ADDED:
if (ses.nodeExists(event.getPath())) {
Node nodeAdded = ses.getNode(event.getPath());
@ -109,7 +144,7 @@ public class VREQueryRetriever implements Callable<List<Item>> {
}
}
break;
case Event.PROPERTY_CHANGED:
if (ses.propertyExists(event.getPath())) {
Property property = ses.getProperty(event.getPath());

60
src/main/java/org/gcube/data/access/storagehub/services/GroupManager.java
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@ -108,9 +108,9 @@ public class GroupManager {
log.info("group {} found",group.getPrincipal().getName());
groups.add(group.getPrincipal().getName());
}
}catch(Exception e) {
log.error("jcr error getting groups", e);
GXOutboundErrorResponse.throwException(new BackendGenericError(e));
}catch(RepositoryException re ){
log.error("jcr error creating item", re);
GXOutboundErrorResponse.throwException(new BackendGenericError("jcr error creating item", re));
} finally {
if (session!=null)
session.logout();
@ -174,9 +174,9 @@ public class GroupManager {
if (authorizable.isGroup())
authorizable.remove();
session.save();
}catch(Exception e) {
log.error("jcr error getting users", e);
GXOutboundErrorResponse.throwException(new BackendGenericError(e));
}catch(RepositoryException re ){
log.error("jcr error creating item", re);
GXOutboundErrorResponse.throwException(new BackendGenericError("jcr error creating item", re));
} finally {
if (session!=null)
session.logout();
@ -270,9 +270,9 @@ public class GroupManager {
log.error(she.getErrorMessage(), she);
GXOutboundErrorResponse.throwException(she, Response.Status.fromStatusCode(she.getStatus()));
}catch(RepositoryException re ){
log.error("removing admin to VREFolder", re);
GXOutboundErrorResponse.throwException(new BackendGenericError("jcr error removing admin to VREFolder", re));
} finally {
log.error("jcr error creating item", re);
GXOutboundErrorResponse.throwException(new BackendGenericError("jcr error creating item", re));
}finally {
if (session!=null)
session.logout();
}
@ -307,10 +307,13 @@ public class GroupManager {
}
}catch(Exception e) {
log.error("jcr error getting admins of group {}", groupId, e);
GXOutboundErrorResponse.throwException(new BackendGenericError(e));
} finally {
}catch(StorageHubException she ){
log.error(she.getErrorMessage(), she);
GXOutboundErrorResponse.throwException(she, Response.Status.fromStatusCode(she.getStatus()));
}catch(RepositoryException re ){
log.error("jcr error creating item", re);
GXOutboundErrorResponse.throwException(new BackendGenericError("jcr error creating item", re));
}finally {
if (session!=null)
session.logout();
}
@ -354,10 +357,13 @@ public class GroupManager {
session.getWorkspace().clone(session.getWorkspace().getName(), folder.getPath(),userPath , false);
session.save();
}catch(Exception e) {
log.error("jcr error adding user {} to group {}", userId, groupId, e);
GXOutboundErrorResponse.throwException(new BackendGenericError(e));
} finally {
}catch(StorageHubException she ){
log.error(she.getErrorMessage(), she);
GXOutboundErrorResponse.throwException(she, Response.Status.fromStatusCode(she.getStatus()));
}catch(RepositoryException re ){
log.error("jcr error creating item", re);
GXOutboundErrorResponse.throwException(new BackendGenericError("jcr error creating item", re));
}finally {
if (session!=null)
session.logout();
}
@ -405,9 +411,12 @@ public class GroupManager {
success = group.removeMember(user);
session.save();
}catch(Exception e) {
log.error("jcr error adding user {} to group {}", userId, groupId, e);
GXOutboundErrorResponse.throwException(new BackendGenericError(e));
}catch(StorageHubException she ){
log.error(she.getErrorMessage(), she);
GXOutboundErrorResponse.throwException(she, Response.Status.fromStatusCode(she.getStatus()));
}catch(RepositoryException re ){
log.error("jcr error creating item", re);
GXOutboundErrorResponse.throwException(new BackendGenericError("jcr error creating item", re));
} finally {
if (session!=null)
session.logout();
@ -445,10 +454,13 @@ public class GroupManager {
}
}catch(Exception e) {
log.error("jcr error getting users of group {}", groupId, e);
GXOutboundErrorResponse.throwException(new BackendGenericError(e));
} finally {
}catch(StorageHubException she ){
log.error(she.getErrorMessage(), she);
GXOutboundErrorResponse.throwException(she, Response.Status.fromStatusCode(she.getStatus()));
}catch(RepositoryException re ){
log.error("jcr error creating item", re);
GXOutboundErrorResponse.throwException(new BackendGenericError("jcr error creating item", re));
}finally {
if (session!=null)
session.logout();
}

28
src/main/java/org/gcube/data/access/storagehub/services/ItemsManager.java
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@ -250,6 +250,34 @@ public class ItemsManager {
return new ItemList(toReturn);
}
@GET
@Path("{id}/search")
@Produces(MediaType.APPLICATION_JSON)
public ItemList searchItems(@QueryParam("showHidden") Boolean showHidden, @QueryParam("exclude") List<String> excludes, @QueryParam("onlyType") String nodeType,@QueryParam("name") String name ){
InnerMethodName.instance.set("listById");
Session ses = null;
List<? extends Item> toReturn = null;
try{
ses = repository.getRepository().login(CredentialHandler.getAdminCredentials(context));
authChecker.checkReadAuthorizationControl(ses, id);
toReturn = Utils.serachByNameOnFolder(ses, ses.getNodeByIdentifier(id), excludes, null, showHidden==null?false:showHidden, nodeType!=null ? ClassHandler.instance().get(nodeType) : null, name);
}catch (ItemNotFoundException e) {
log.error("id {} not found",id,e);
GXOutboundErrorResponse.throwException(new IdNotFoundException(id, e), Status.NOT_FOUND);
}catch(RepositoryException re){
log.error("jcr error getting children", re);
GXOutboundErrorResponse.throwException(new BackendGenericError(re));
}catch(StorageHubException she ){
log.error(she.getErrorMessage(), she);
GXOutboundErrorResponse.throwException(she, Response.Status.fromStatusCode(she.getStatus()));
}finally{
if (ses!=null)
ses.logout();
}
return new ItemList(toReturn);
}
@GET
@Path("{id}/children/paged")
@Produces(MediaType.APPLICATION_JSON)

31
src/main/java/org/gcube/data/access/storagehub/services/UserManager.java
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@ -8,6 +8,8 @@ import java.util.List;
import javax.inject.Inject;
import javax.jcr.Node;
import javax.jcr.NodeIterator;
import javax.jcr.PathNotFoundException;
import javax.jcr.RepositoryException;
import javax.jcr.query.QueryResult;
import javax.servlet.ServletContext;
import javax.ws.rs.Consumes;
@ -20,6 +22,7 @@ import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import org.apache.jackrabbit.api.JackrabbitSession;
import org.apache.jackrabbit.api.security.user.Authorizable;
@ -31,6 +34,7 @@ import org.gcube.common.authorization.control.annotations.AuthorizationControl;
import org.gcube.common.authorization.library.provider.AuthorizationProvider;
import org.gcube.common.gxrest.response.outbound.GXOutboundErrorResponse;
import org.gcube.common.storagehub.model.exceptions.BackendGenericError;
import org.gcube.common.storagehub.model.exceptions.StorageHubException;
import org.gcube.common.storagehub.model.exceptions.UserNotAuthorizedException;
import org.gcube.common.storagehub.model.types.NodeProperty;
import org.gcube.data.access.storagehub.Constants;
@ -122,9 +126,12 @@ public class UserManager {
Utils.createFolderInternally(session, workspaceFolder, Constants.VRE_FOLDER_PARENT_NAME, "special folder container of "+user, false, user, null);
session.save();
}catch(Exception e) {
log.error("jcr error creating user {}", user, e);
GXOutboundErrorResponse.throwException(new BackendGenericError(e));
}catch(StorageHubException she ){
log.error(she.getErrorMessage(), she);
GXOutboundErrorResponse.throwException(she, Response.Status.fromStatusCode(she.getStatus()));
}catch(RepositoryException re ){
log.error("jcr error creating item", re);
GXOutboundErrorResponse.throwException(new BackendGenericError("jcr error creating item", re));
} finally {
if (session!=null)
session.logout();
@ -169,14 +176,24 @@ public class UserManager {
}
Authorizable authorizable = usrManager.getAuthorizable(new PrincipalImpl(user));
if (!authorizable.isGroup()) {
if (authorizable!=null && !authorizable.isGroup()) {
log.info("removing user {}", user);
authorizable.remove();
} else log.warn("the user {} was already deleted", user);
org.gcube.common.storagehub.model.Path homePath = Utils.getHome(user);
try {
session.getNode(homePath.toPath()).remove();
} catch (PathNotFoundException e) {
log.warn("{} home dir was already deleted", user);
}
session.save();
}catch(Exception e) {
log.error("jcr error getting users", e);
GXOutboundErrorResponse.throwException(new BackendGenericError(e));
}catch(StorageHubException she ){
log.error(she.getErrorMessage(), she);
GXOutboundErrorResponse.throwException(she, Response.Status.fromStatusCode(she.getStatus()));
}catch(RepositoryException re ){
log.error("jcr error creating item", re);
GXOutboundErrorResponse.throwException(new BackendGenericError("jcr error creating item", re));
} finally {
if (session!=null)
session.logout();

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