org.mycore.access.MCRAccessCacheManager Maven / Gradle / Ivy
/*
* This file is part of *** M y C o R e ***
* See http://www.mycore.de/ for details.
*
* MyCoRe is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* MyCoRe is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MyCoRe. If not, see .
*/
package org.mycore.access;
import org.mycore.common.MCRCache;
import org.mycore.common.MCRSession;
import org.mycore.common.MCRSessionMgr;
import org.mycore.common.events.MCRSessionEvent;
import org.mycore.common.events.MCRSessionListener;
/**
* @author Thomas Scheffler (yagee)
*
*/
class MCRAccessCacheManager implements MCRSessionListener {
private static final int CAPACITY = 200;
private static String key = MCRAccessCacheManager.class.getCanonicalName();
ThreadLocal> accessCache = ThreadLocal.withInitial(() -> {
//this is only called for every session that was created before this class could attach to session events
MCRSession session = MCRSessionMgr.getCurrentSession();
@SuppressWarnings("unchecked")
MCRCache cache = (MCRCache) session.get(key);
if (cache == null) {
cache = createCache(session);
session.put(key, cache);
}
return cache;
});
@Override
@SuppressWarnings("unchecked")
public void sessionEvent(MCRSessionEvent event) {
MCRCache cache;
MCRSession session = event.getSession();
switch (event.getType()) {
case created:
case activated:
break;
case passivated:
accessCache.remove();
break;
case destroyed:
cache = (MCRCache) session.get(key);
if (cache != null) {
cache.close();
}
break;
default:
break;
}
}
private MCRCache createCache(MCRSession session) {
return new MCRCache<>(CAPACITY, "Access rights in MCRSession " + session.getID());
}
MCRAccessCacheManager() {
//init for current user done
MCRSessionMgr.addSessionListener(this);
}
public Boolean isPermitted(String id, String permission) {
MCRPermissionHandle handle = new MCRPermissionHandle(id, permission);
MCRCache permissionCache = accessCache.get();
MCRSession currentSession = MCRSessionMgr.getCurrentSession();
return permissionCache.getIfUpToDate(handle, currentSession.getLoginTime());
}
public void cachePermission(String id, String permission, boolean permitted) {
MCRPermissionHandle handle = new MCRPermissionHandle(id, permission);
accessCache.get().put(handle, permitted);
}
public void removePermission(String id, String permission) {
MCRPermissionHandle handle = new MCRPermissionHandle(id, permission);
MCRCache permissionCache = accessCache.get();
permissionCache.remove(handle);
}
}