void InternalCCache::cleanup()
{
#ifdef _DEBUG
saml::NDC ndc("cleanup()");
#endif
int rerun_timer = 0;
int timeout_life = 0;
Mutex* mutex = Mutex::create();
// Load our configuration details...
const XMLCh* tag=m_root->getAttributeNS(NULL,cleanupInterval);
if (tag && *tag)
rerun_timer = XMLString::parseInt(tag);
tag=m_root->getAttributeNS(NULL,cacheTimeout);
if (tag && *tag)
timeout_life = XMLString::parseInt(tag);
if (rerun_timer <= 0)
rerun_timer = 300; // rerun every 5 minutes
if (timeout_life <= 0)
timeout_life = 28800; // timeout after 8 hours
mutex->lock();
log->info("Cleanup thread started... Run every %d secs; timeout after %d secs",
rerun_timer, timeout_life);
while (shutdown == false) {
shutdown_wait->timedwait(mutex,rerun_timer);
if (shutdown == true)
break;
log->debug("Cleanup thread running...");
// Ok, let's run through the cleanup process and clean out
// really old sessions. This is a two-pass process. The
// first pass is done holding a read-lock while we iterate over
// the database. The second pass doesn't need a lock because
// the 'deletes' will lock the database.
// Pass 1: iterate over the map and find all entries that have not been
// used in X hours
vector<string> stale_keys;
time_t stale = time(NULL) - timeout_life;
lock->rdlock();
for (map<string,InternalCCacheEntry*>::iterator i=m_hashtable.begin();
i != m_hashtable.end(); i++)
{
// If the last access was BEFORE the stale timeout...
i->second->lock();
time_t last=i->second->lastAccess();
i->second->unlock();
if (last < stale)
stale_keys.push_back(i->first);
}
lock->unlock();
log->info("deleting %d old items.", stale_keys.size());
// Pass 2: walk through the list of stale entries and remove them from
// the database
for (vector<string>::iterator j = stale_keys.begin(); j != stale_keys.end(); j++) {
remove (j->c_str());
// Transaction Logging
STConfig& stc=static_cast<STConfig&>(ShibTargetConfig::getConfig());
stc.getTransactionLog().infoStream() << "Purged expired session from memory (ID: " << j->c_str() << ")";
stc.releaseTransactionLog();
}
}
log->info("Cleanup thread finished.");
mutex->unlock();
delete mutex;
Thread::exit(NULL);
}
