Service-controlled queues in WebAdmin

UTM makes use of so-called "service-controlled queues" (frequently referred to as "queues" for short). The respective openUTM manuals provide a detailed description of precisely what a service-controlled queue is, where it can be used and how it can be used.

There are three types of service-controlled queue. These differ primarily in the way they are created, but there is generally no difference in their function or mode of use. The three types of queue are:

• Temporary queues
  Temporary queues are generated and deleted again in UTM program units. This is done using the KDCS calls QCRE (Create) and QREL (Delete).

• Tac queues
  Tac queues are generated in the same way as Tacs, i.e. either with a KDCDEF "TAC" statement (with TYPE=Q) or dynamically by means of a KDCADMI program interface call.
  Tac queues are therefore represented by a special variant of an UTM object of the type TAC.

• User-Queues
  Every UTM user simultaneously represents a potentially exploitable user queue unless the QLEV property is explicitly set to zero. A "User" type object is created either with a KDCDEF "USER" statement or dynamically by means of a KDCADMI program interface call.

WebAdmin also uses service-controlled queues for the "WebAdmin message destination" functionality (see WebAdmin message destination – message collectors).

The sections below describe how WebAdmin supports service-controlled queues and indicates where you will encounter them.