/**
* Construct and return a new session object, based on the default settings specified by this
* Manager's properties. The session id specified will be used as the session id. If a new session
* cannot be created for any reason, return <code>null</code>.
*
* @param sessionId The session id which should be used to create the new session; if <code>null
* </code>, a new session id will be generated
* @exception IllegalStateException if a new session cannot be instantiated for any reason
*/
@Override
public Session createSession(String sessionId) {
if ((maxActiveSessions >= 0) && (getActiveSessions() >= maxActiveSessions)) {
rejectedSessions++;
throw new IllegalStateException(sm.getString("managerBase.createSession.ise"));
}
// Recycle or create a Session instance
Session session = createEmptySession();
// Initialize the properties of the new session and return it
session.setNew(true);
session.setValid(true);
session.setCreationTime(System.currentTimeMillis());
session.setMaxInactiveInterval(this.maxInactiveInterval);
String id = sessionId;
if (id == null) {
id = generateSessionId();
}
session.setId(id);
sessionCounter++;
SessionTiming timing = new SessionTiming(session.getCreationTime(), 0);
synchronized (sessionCreationTiming) {
sessionCreationTiming.add(timing);
sessionCreationTiming.poll();
}
return (session);
}
/**
* Reinstantiates a serialized session from the data passed in. This will first call
* createSession() so that we get a fresh instance with all the managers set and all the transient
* fields validated. Then it calls Session.readObjectData(byte[]) to deserialize the object
*
* @param data - a byte array containing session data
* @return a valid Session object, null if an error occurs
*/
protected Session readSession(byte[] data, String sessionId) {
try {
ReplicationStream session_in = getReplicationStream(data);
Session session = sessionId != null ? this.findSession(sessionId) : null;
boolean isNew = (session == null);
// clear the old values from the existing session
if (session != null) {
ReplicatedSession rs = (ReplicatedSession) session;
rs.expire(false); // cleans up the previous values, since we are not doing removes
session = null;
} // end if
if (session == null) {
session = createSession(null, false, false);
sessions.remove(session.getIdInternal());
}
boolean hasPrincipal = session_in.readBoolean();
SerializablePrincipal p = null;
if (hasPrincipal) p = (SerializablePrincipal) session_in.readObject();
((ReplicatedSession) session).readObjectData(session_in);
if (hasPrincipal) session.setPrincipal(p.getPrincipal(getContainer().getRealm()));
((ReplicatedSession) session).setId(sessionId, isNew);
ReplicatedSession rsession = (ReplicatedSession) session;
rsession.setAccessCount(1);
session.setManager(this);
session.setValid(true);
rsession.setLastAccessedTime(System.currentTimeMillis());
rsession.setThisAccessedTime(System.currentTimeMillis());
((ReplicatedSession) session).setAccessCount(0);
session.setNew(false);
if (log.isTraceEnabled())
log.trace(
"Session loaded id="
+ sessionId
+ " actualId="
+ session.getId()
+ " exists="
+ this.sessions.containsKey(sessionId)
+ " valid="
+ rsession.isValid());
return session;
} catch (Exception x) {
log.error("Failed to deserialize the session!", x);
}
return null;
}
/**
* Construct and return a new session object, based on the default settings specified by this
* Manager's properties. The session id specified will be used as the session id. If a new session
* cannot be created for any reason, return <code>null</code>.
*
* @param sessionId The session id which should be used to create the new session; if <code>null
* </code>, a new session id will be generated
* @exception IllegalStateException if a new session cannot be instantiated for any reason
*/
public Session createSession(String sessionId, Random random) {
// Recycle or create a Session instance
Session session = createEmptySession();
// Initialize the properties of the new session and return it
session.setNew(true);
session.setValid(true);
session.setCreationTime(System.currentTimeMillis());
session.setMaxInactiveInterval(this.maxInactiveInterval);
if (sessionId == null) {
sessionId = generateSessionId(random);
}
session.setId(sessionId);
sessionCounter++;
return (session);
}
/**
* Creates a HTTP session. Most of the code in here is copied from the StandardManager. This is
* not pretty, yeah I know, but it was necessary since the StandardManager had hard coded the
* session instantiation to the a StandardSession, when we actually want to instantiate a
* ReplicatedSession<br>
* If the call comes from the Tomcat servlet engine, a SessionMessage goes out to the other nodes
* in the cluster that this session has been created.
*
* @param notify - if set to true the other nodes in the cluster will be notified. This flag is
* needed so that we can create a session before we deserialize a replicated one
* @see ReplicatedSession
*/
protected Session createSession(String sessionId, boolean notify, boolean setId) {
// inherited from the basic manager
if ((getMaxActiveSessions() >= 0) && (sessions.size() >= getMaxActiveSessions())) {
throw new TooManyActiveSessionsException(
sm.getString("standardManager.createSession.ise"), getMaxActiveSessions());
}
Session session = new ReplicatedSession(this);
// Initialize the properties of the new session and return it
session.setNew(true);
session.setValid(true);
session.setCreationTime(System.currentTimeMillis());
session.setMaxInactiveInterval(this.maxInactiveInterval);
if (sessionId == null) sessionId = generateSessionId();
if (setId) session.setId(sessionId);
if (notify && (cluster != null)) {
((ReplicatedSession) session).setIsDirty(true);
}
return (session);
} // createSession