Event Tracer

Event Tracer

The Event Tracer monitors and visualizes events occuring in the UBIK^® system environment immediately, while the event data is also written by the logging mechanism in the background. This enables the user to watch events as they happen without the need to open log files. These events can be errors and warnings as well as messages generated out of the customizing code for debugging purposes (see logging category types).

The list shows all events that occured since the start of the Studio session. Every entry has an information header shown in the list, consisting of the type and the time it occured as well as the time that elapsed, which is updated frequently. Every entry then can be expanded to show the full infomation included in this event.

Message Types

UBIK^® Event Tracer is able to show the following event types:

Icon	Type	Content
	Error	events the user should pay high attention to because the system is in a vulnerable state (marked with red error symbol); if the error message also provides a stack trace, the stacktrace will be shown on the right of the list box
	Warning	events that have to be investigated because they are potentially important to the productive use of the system (marked with yellow warning symbol)
	Message	events that support the user in debugging or finding problems in general (marked with blue message symbol)

The Event Tracer features a toolbar with the following items, from left to right:

Icon	Item	Purpose
	Select Category	Here the user can check or uncheck the categories to be shown in the list; changing this will hide or show the selected category of events in the list
	Sort by time stamp	this will sort the entries by the time stamp; clicking this repeatedly will change the direction of the sorting between ascending and descending time stamp
	Sort by category	this will sort the entries by the level of importance; clicking this repeatedly will change the direction of the sorting between important messages shown on top or at the bottom of the list
	Expand all items	this will expand all list entries to show all the information behind
	Collapse all items	this will collapse all list entries to show their headers only
	Copy to Clipboard	this will copy the content of the currently selected event(s)
	Copy all to Clipboard	this will copy the content of the all listed events to the clipboard
	Save to file	Saves the content of the currently selected event(s) to a text file
	Save all to file	Saves the content of the all listed events to a text file
	Clear all items	Clears the event list

The Event Tracer features a status bar at the bottom showing the following information:

• number of each event type; clicking these items will also hide or show the respective type of events in the list.
• last event including the time stamp; clicking on this item will automatically show and select the item in the events list.

By right-clicking an event in the list, a context menu is shown: