Event notifications are received from the Domain Manager when the status of an event changes. In order to receive these notifications, you must subscribe to events in the Domain Manager.

The ASL format of the notification record is:

 timestamp:    integer      fs
               “NOTIFY”     fs
 class:        word         fs
 instance:     word         fs
 event:        word         fs
 certainty:    float        fs
                            eol

Normally, the Domain Manager sends the following:

  • Single notification message when an event becomes active

  • Single clear message when the event is no longer active.

    If an event corresponds to a root-cause problem, it is possible that the certainty of the diagnosis will change over time. If the diagnosis certainty changes, the Domain Manager generates another notification. Notifications of this type are streamed in a slightly different manner:

    timestamp:    integer            fs
                  “CERTAINTY_CHANGE” fs
    class:        word               fs
    instance:     word               fs
    event:        word               fs
    certainty:    float              fs
                                     eol
    

    The subscriber front end normally discards certainty changes that are less than 1% (0.01). This behavior can be disabled.

    When the Domain Manager clears an event, the ASL format of the notification record is:

    timestamp:    integer      fs
                  “CLEAR”      fs
    class:        word         fs
    instance:     word         fs
    event:        word         fs
                               eol