/**
* Sets up the portal mappings. May be called at context init or at any other time.
*
* <p>Notice that this isn't thread safe. The main problem is reading the prefix2portalid and
* isPortalPickingActive by the doFilter() method while setupPortalMappings() is being run. This
* could be solved by making doFilter synchronized but then only one thread could be in doFilter
* at a time and that might be a performance issue.
*
* <p>Since setupPortalMappings is synchronized we cannot get an inconsistent state after it
* returns. There will be a short time when it is running when the prefix2portalid and
* isPortalPickingActive might be inconsistent. If a different thread calls doFilter at that time
* and gets a bad result we should be able to live with it.
*/
public static synchronized void setupPortalMappings(Collection<Portal> portals) {
if (portals == null || portals.size() < 1) {
log.debug("No portal mappings found in db. Filtering for portals will be inactive");
prefix2portalid = new HashMap<String, Integer>();
isPortalPickingActive = false;
return;
}
int mappingCount = 0;
boolean prefixCollision = false;
HashMap<String, Integer> newPrefixMap = new HashMap<String, Integer>();
HashMap<Integer, String> newPortalIdMap = new HashMap<Integer, String>();
for (Portal portal : portals) {
if (portal == null) continue;
String urlprefix = portal.getUrlprefix();
if (urlprefix == null
|| urlprefix.trim().length() == 0
|| " ".equalsIgnoreCase(urlprefix)) {
log.debug(
"no url prefix mapping for portal "
+ portal.getAppName()
+ " id "
+ portal.getPortalId());
continue;
}
urlprefix = urlprefix.trim();
if (protectedPrefixes.contains(urlprefix)) {
log.error(
"the prefix "
+ urlprefix
+ " is a directory that is in the webapp"
+ " and may not be used as a prefix for portal "
+ portal.getPortalId());
continue;
}
if (newPrefixMap.containsKey(urlprefix)) {
Integer i = newPrefixMap.get(urlprefix);
log.debug(
"multiple portals have the url prefix "
+ urlprefix
+ ", both portals id:"
+ i.toString()
+ " and id:"
+ portal.getPortalId());
newPrefixMap.remove(urlprefix);
newPortalIdMap.remove(i);
prefixCollision = true;
}
log.debug("urlprefix:'" + urlprefix + "' -> \t\tportalid: " + portal.getPortalId());
newPrefixMap.put(urlprefix, new Integer(portal.getPortalId()));
newPortalIdMap.put(new Integer(portal.getPortalId()), urlprefix);
mappingCount++;
}
if (mappingCount > 0) {
prefix2portalid = newPrefixMap;
portalid2prefix = newPortalIdMap;
isPortalPickingActive = true;
} else {
prefix2portalid = new HashMap<String, Integer>();
portalid2prefix = new HashMap<Integer, String>();
isPortalPickingActive = false;
}
log.info("final mappings:");
for (String key : prefix2portalid.keySet()) {
Integer id = prefix2portalid.get(key);
log.info("portalid: " + id + "\turlprefix:'" + key + "'");
}
if (prefixCollision) log.info("there were at least two portals that had the same prefix.");
}
