OMNIbus event reader process
The phases of the OMNIbus event reader process are startup, event polling, event querying, deleted event notification, and event queueing.
- Startup
- When the event reader is started it reads events using the StateChange or serial value that it used before being shut down. To read all the events on start-up, click Clear State.
- Event Polling
- During the event polling phase, the OMNIbus event reader queries the ObjectServer at intervals for all new and unprocessed events. You set the polling interval when you configure the event reader.
- Event Querying
- When the OMNIbus event reader queries the ObjectServer, either at startup, or when polling for events at intervals, it reads the state file, retrieves new or updated events, and records the state file.. For more information, see Event querying.
- Deleted Event Notification
- If the OMNIbus event reader is configured to run a policy when an event is deleted from the ObjectServer, it listens to the ObjectServer through the IDUC interface for notification of deleted alerts. The IDUC delete notification includes the event field data for the deleted alert.
- Event Queueing
- After it retrieves new or updated events, or has received events through delete notification, the OMNIbus event reader compares the field data in the events to its set of filters. For more information, see Event queuing.