public interface StatelessTicketCache
When a service ticket or proxy ticket is validated against the CAS server, it is unable
to be used again. Most types of callers are stateful and are associated with a given
HttpSession. This allows the affirmative CAS validation outcome to be
stored in the
HttpSession, meaning the removal of the ticket from the CAS
server is not an issue.
Stateless callers, such as remoting protocols, cannot take advantage of
HttpSession. If the stateless caller is located a significant network
distance from the CAS server, acquiring a fresh service ticket or proxy ticket for each
invocation would be expensive.
To avoid this issue with stateless callers, it is expected stateless callers will
obtain a single service ticket or proxy ticket, and then present this same ticket to
the Spring Security secured application on each occasion. As no
HttpSession is available for such callers, the affirmative CAS validation
outcome cannot be stored in this location.
StatelessTicketCache enables the service tickets and proxy tickets
belonging to stateless callers to be placed in a cache. This in-memory cache stores the
CasAuthenticationToken, effectively providing the same capability as a
HttpSession with the ticket identifier being the key rather than a session
Implementations should provide a reasonable timeout on stored entries, such that the stateless caller are not required to unnecessarily acquire fresh CAS service tickets or proxy tickets.
|Modifier and Type||Method and Description|
Adds the specified
Removes the specified ticket from the cache, as per
Removes the specified ticket from the cache, meaning that future calls will require a new service ticket.
CasAuthenticationToken getByTicketId(String serviceTicket)
CasAuthenticationTokenassociated with the specified ticket.
If not found, returns a
void putTicketInCache(CasAuthenticationToken token)
CasAuthenticationTokento the cache.
CasAuthenticationToken.getCredentials() method is used to retrieve the
service ticket number.
token- to be added to the cache
void removeTicketFromCache(CasAuthenticationToken token)
token- to be removed
void removeTicketFromCache(String serviceTicket)
This is in case applications wish to provide a session termination capability for their stateless clients.
serviceTicket- to be removed