/** * receives all sign on / sign off events so it can release locks of users which have or are * logged off */ @Override public void event(final Event event) { final SignOnOffEvent se = (SignOnOffEvent) event; if (!se.isSignOn() && se.isEventOnThisNode()) { // it is a "logout" event - we are only interested in logout events // and it is from our VM => only release all locks from within one // VM final String identName = se.getIdentityName(); // release all locks held by the identity that has just logged out. // (assuming one user has only one session (logged in with one // browser only): otherwise (as in singlevm, too) // since the lock is reentrant, a lock could be freed while a // session still is in a locked workflow (2x lock and then once // freed) try { clusterLockManager.releaseAllLocksFor(identName); } catch (final DBRuntimeException dbEx) { log.warn( "releaseAllLocksFor failed, close session and try it again for identName=" + identName); // TODO: 2010-04-23 Transactions [eglis]: OLAT-4318: this // rollback has possibly unwanted // side effects, as it rolls back any changes with this // transaction during this // event handling. Nicer would be to be done in the // outmost-possible place, e.g. dofire() DBFactory.getInstance().rollbackAndCloseSession(); // try again with new db-session log.info("try again to release all locks for identName=" + identName); clusterLockManager.releaseAllLocksFor(identName); log.info("Done, released all locks for identName=" + identName); } } }
/** * Delete any locks hold by this principal. * * @param principal */ public void releaseAllLocksForPrincipal(OLATPrincipal principal) { try { clusterLockManager.releaseAllLocksFor(principal.getName()); log.info( "Done, released all locks managed by the clusterLockManager for identName=" + principal.getName()); } catch (Exception e) { log.warn("releaseAllLocksFor failed, for identName=" + principal.getName()); } try { this.getPersistentLockManager().releaseAllLocksForPrincipal(principal); log.info( "Done, released all locks managed by the PersistentLockManager for identName=" + principal.getName()); } catch (Exception e) { log.warn("releaseAllLocksForPrincipal failed, for identName=" + principal.getName()); } }