/**
* Returns a session from the session store, returning null if there's no cached session.
*
* @param key the session id
* @param now the time in milliseconds. now == 0 implies that we're just checking for the
* existence of such a session in the cache and do not intend actually to load it if it is
* not.
* @return the cached session.
*/
public SessionArrayValue getSession(Env env, String key, long now) {
SessionArrayValue session;
boolean isNew = false;
boolean killSession = false;
if (_sessions == null) return null;
// Check the cache first
session = _sessions.get(key);
if (session != null && !session.getId().equals(key))
throw new IllegalStateException(key + " != " + session.getId());
if (session != null) {
if (session.inUse()) {
System.out.println("USE:" + isNew);
return (SessionArrayValue) session.copy(env);
}
}
if (session == null) return null;
if (isNew) {
isNew = !load(env, session, now);
System.out.println("LOAD:" + isNew);
} else if (!getSaveOnlyOnShutdown() && !session.load()) {
// if the load failed, then the session died out from underneath
session.reset(now);
isNew = true;
}
if (!isNew) session.setAccess(now);
return (SessionArrayValue) session.copy(env);
}
public void saveSession(Env env, SessionArrayValue session) {
SessionArrayValue copy = (SessionArrayValue) session.copy(env);
_sessions.put(session.getId(), copy);
session.finish();
if (_persistentStore != null) {
_persistentStore.put(session.getId(), copy.encode(env));
}
}
/**
* Creates a session. It's already been established that the key does not currently have a
* session.
*/
protected SessionArrayValue create(Env env, String key, long now) {
SessionArrayValue session = createSessionValue(key, now, _sessionTimeout);
load(env, session, now);
// If another thread has created and stored a new session,
// putIfNew will return the old session
session = _sessions.putIfNew(key, session);
if (!key.equals(session.getId()))
throw new IllegalStateException(key + " != " + session.getId());
return (SessionArrayValue) session.copy(env);
}