It contains the list of all services available in the server node and the percent of resources occupied by each type of services as well as total sizes of each of services in the server node. For each service in a server node , it contains the current number of service requests executed in the server node. The class Admission represents an admission control. The default virtual functions which check an admission condition and what to do with rejected sessions implement just one admission control strategy. It may be replaced by a user defined strategy.
Admission is associated with a server.
An admission condition is checked at the server but the decision what to do with the rejected session is delegated to the node which has generated this message. The Proxy is a Generator which handles sessions and requests generated by clients represented by Proxy and sends requests to servers or finds requested service resources in the Proxy cache. As Proxy is derived from Sender , it can balance the load of clusters and of servers in clusters. The Server hosts services. The class member detail specifies the level of detail with which the server is modeled.