Filter protocol - principle of actions
The MANAGER, the Filter/Run command and the EVENT-EDITOR
realize actions affecting the events.
Actions on events are of several types and are part of the filter
specifications:
- Display action executed by the EVENT-EDITOR in order to display
events (Display action(s) for protocol events or Counter
action(s) for statistics events).
- Record action executed by the MANAGER to record the events in a
file.
- actions specific to protocol events:
- Record Start, Record Stop actions
(associated to the Record action) for more sophisticated
recording purposes.
- Start Delay and Stop Delay actions to measure delays
between events.
- Trig-out action to supply an activation signal to an external
equipment triggered by an event occurrence.
Action sequencing
The actions are realized in sequence on the various event streams:
- Record action for recording in the event file.
- Display action from the event file for reading by EVENT-EDITOR.
Filtering principle and filter file
Each action can be carried out selectively on the events through means of a
FILTERING operation.
This filtering operation enables selection of the events on which the action
is executed. To each independent action, execution parameters are associated:
- interface selection as part of the action.
- SELECTION CONDITIONS (depending on protocols used on the interface) as
part of the action.
- execution FORMAT globally defined for the action type.
Different filtering actions and execution formats of different type can be
defined and saved in filter files which can be edited by the FILTER-EDITOR:
- if an action is defined, the attached selection conditions are applied on
events.
- if the filter does not include any filtering action of a certain type, no
filtering of this type is carried out (for example, if no Display
action, all the events are displayed).
- the Display format is systematically applied to display the events.
- the Record format is systematically applied to record the events.
Filters are used in the profile definition and execution, event file edition
and processing. Implementing a filter for its Display or Record
specifications is carried out by designating its file name.
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