server/runtime/org.argeo.server.jackrabbit/src/main/java/org/argeo/jackrabbit/remote/SimpleSessionProvider.java

   1 package org.argeo.jackrabbit.remote;
   2
   3 import java.io.Serializable;
   4 import java.util.ArrayList;
   5 import java.util.Collections;
   6 import java.util.HashMap;
   7 import java.util.Iterator;
   8 import java.util.List;
   9 import java.util.Map;
  10
  11 import javax.jcr.LoginException;
  12 import javax.jcr.Node;
  13 import javax.jcr.Repository;
  14 import javax.jcr.RepositoryException;
  15 import javax.jcr.Session;
  16 import javax.jcr.Value;
  17 import javax.servlet.ServletException;
  18 import javax.servlet.http.HttpServletRequest;
  19
  20 import org.apache.commons.logging.Log;
  21 import org.apache.commons.logging.LogFactory;
  22 import org.apache.jackrabbit.api.JackrabbitSession;
  23 import org.apache.jackrabbit.api.security.user.Group;
  24 import org.apache.jackrabbit.api.security.user.User;
  25 import org.apache.jackrabbit.api.security.user.UserManager;
  26 import org.apache.jackrabbit.server.SessionProvider;
  27 import org.argeo.ArgeoException;
  28 import org.argeo.jcr.ArgeoNames;
  29 import org.argeo.jcr.JcrUtils;
  30
  31 /**
  32  * To be injected, typically of scope="session". Implements an open session in
  33  * view patter: a new JCR session is created for each request
  34  */
  35 public class SimpleSessionProvider implements SessionProvider, Serializable {
  36         private static final long serialVersionUID = 2270957712453841368L;
  37
  38         private final static Log log = LogFactory
  39                         .getLog(SimpleSessionProvider.class);
  40
  41         private transient Map<String, Session> sessions;
  42
  43         private Boolean openSessionInView = true;
  44
  45         public Session getSession(HttpServletRequest request, Repository rep,
  46                         String workspace) throws LoginException, ServletException,
  47                         RepositoryException {
  48
  49                 if (openSessionInView) {
  50                         JackrabbitSession session = (JackrabbitSession) rep
  51                                         .login(workspace);
  52                         writeRemoteRoles(session);
  53                         return session;
  54                 } else {
  55                         // since sessions is transient it can't be restored from the session
  56                         if (sessions == null)
  57                                 sessions = Collections
  58                                                 .synchronizedMap(new HashMap<String, Session>());
  59
  60                         if (!sessions.containsKey(workspace)) {
  61                                 try {
  62                                         JackrabbitSession session = (JackrabbitSession) rep.login(
  63                                                         null, workspace);
  64                                         writeRemoteRoles(session);
  65                                         if (log.isTraceEnabled())
  66                                                 log.trace("User " + session.getUserID()
  67                                                                 + " logged into " + request.getServletPath());
  68                                         sessions.put(workspace, session);
  69                                         return session;
  70                                 } catch (Exception e) {
  71                                         throw new ArgeoException("Cannot open session", e);
  72                                 }
  73                         } else {
  74                                 Session session = sessions.get(workspace);
  75                                 if (!session.isLive()) {
  76                                         sessions.remove(workspace);
  77                                         session = rep.login(null, workspace);
  78                                         sessions.put(workspace, session);
  79                                 }
  80                                 return session;
  81                         }
  82                 }
  83         }
  84
  85         protected void writeRemoteRoles(JackrabbitSession session)
  86                         throws RepositoryException {
  87                 // retrieve roles
  88                 String userId = session.getUserID();
  89                 UserManager userManager = session.getUserManager();
  90                 User user = (User) userManager.getAuthorizable(userId);
  91                 if (user == null) {
  92                         // anonymous
  93                         return;
  94                 }
  95                 List<String> userGroupIds = new ArrayList<String>();
  96                 if (user != null)
  97                         for (Iterator<Group> it = user.memberOf(); it.hasNext();)
  98                                 userGroupIds.add(it.next().getID());
  99
 100                 // write roles if needed
 101                 Node userProfile = JcrUtils.getUserProfile(session);
 102                 boolean writeRoles = false;
 103                 if (userProfile.hasProperty(ArgeoNames.ARGEO_REMOTE_ROLES)) {
 104                         Value[] roles = userProfile.getProperty(
 105                                         ArgeoNames.ARGEO_REMOTE_ROLES).getValues();
 106                         if (roles.length != userGroupIds.size())
 107                                 writeRoles = true;
 108                         else
 109                                 for (int i = 0; i < roles.length; i++)
 110                                         if (!roles[i].getString().equals(userGroupIds.get(i)))
 111                                                 writeRoles = true;
 112                 } else
 113                         writeRoles = true;
 114
 115                 if (writeRoles) {
 116                         session.getWorkspace().getVersionManager()
 117                                         .checkout(userProfile.getPath());
 118                         String[] roleIds = userGroupIds.toArray(new String[userGroupIds
 119                                         .size()]);
 120                         userProfile.setProperty(ArgeoNames.ARGEO_REMOTE_ROLES, roleIds);
 121                         JcrUtils.updateLastModified(userProfile);
 122                         session.save();
 123                         session.getWorkspace().getVersionManager()
 124                                         .checkin(userProfile.getPath());
 125                 }
 126
 127         }
 128
 129         public void releaseSession(Session session) {
 130                 if (log.isTraceEnabled())
 131                         log.trace("Releasing JCR session " + session);
 132                 if (openSessionInView) {
 133                         if (session.isLive()) {
 134                                 session.logout();
 135                                 if (log.isTraceEnabled())
 136                                         log.trace("Logged out remote JCR session " + session);
 137                         }
 138                 }
 139         }
 140
 141         public void init() {
 142         }
 143
 144         public void dispose() {
 145                 if (sessions != null)
 146                         for (String workspace : sessions.keySet()) {
 147                                 Session session = sessions.get(workspace);
 148                                 if (session.isLive()) {
 149                                         session.logout();
 150                                         if (log.isDebugEnabled())
 151                                                 log.debug("Logged out remote JCR session " + session);
 152                                 }
 153                         }
 154         }
 155 }