/**
* Gets the {@link SessionContext} without upping its access information and instead checks the
* current values for timeouts. Can optionally return null or throw an exception.
*
* @param uuid
* @param strict If true, an exception will be raised on timeout; otherwise null returned.
* @return
*/
private Data getDataNullOrThrowOnTimeout(String uuid, boolean strict) {
//
// All times are in milliseconds
//
// Getting quiet so that we have the previous access and hit info
final Data data = this.sessions.get(uuid);
if (data == null) {
// Previously we called internalRemove here, under the
// assumption that some other thread/event could cause the
// element to be set to null. That's no longer allowed
// and will only occur by a call to internalRemove,
// making that call unneeded.
if (strict) {
throw new RemovedSessionException("No context for " + uuid);
} else {
return null;
}
}
long lastAccess = data.lastAccessTime;
long hits = data.hitCount;
// Get session info
SessionContext ctx = data.sessionContext;
long now = System.currentTimeMillis();
long start = ctx.getSession().getStarted().getTime();
long timeToIdle = ctx.getSession().getTimeToIdle();
long timeToLive = ctx.getSession().getTimeToLive();
// If never accessed, used creation time
if (lastAccess == 0) {
lastAccess = start;
}
// Calculated
long alive = now - start;
long idle = now - lastAccess;
// Do comparisons if timeTo{} is non-0
if (0 < timeToLive && timeToLive < alive) {
String reason =
reason("timeToLive", lastAccess, hits, start, timeToLive, (alive - timeToLive));
if (strict) {
throw new SessionTimeoutException(reason, ctx);
} else {
return null;
}
} else if (0 < timeToIdle && timeToIdle < idle) {
String reason =
reason("timeToIdle", lastAccess, hits, start, timeToIdle, (idle - timeToIdle));
if (strict) {
throw new SessionTimeoutException(reason, ctx);
} else {
return null;
}
}
return data;
}
public void login(Principal principal) {
// Can't use the method in SessionManager since that leads to a
// circular reference in Spring.
final String uuid = principal.getName();
final SessionContext ctx = cache.getSessionContext(uuid);
final SessionStats stats = ctx.stats();
final BasicEventContext c = new BasicEventContext(principal, stats);
login(c);
}
Data(SessionContext sc, long last, long count) {
this.sessionContext = sc;
this.lastAccessTime = last;
this.hitCount = count;
// clear context
sc.getSession().getDetails().setContexts(null);
}
