Experimental Physics and
Industrial Control System

[email protected] · Thu, 26 Oct 95 11:47:54 -0400

John Said:

>Look, what we NEED is a real error messaging system that allows code to
>log meaningful, arbitrairly complex, appropriate messages.
>
>I object to the idea of basing the error message and logging scheme on
>a return code to message mapping system.  And that goes for anywhere,
>including on the IOCs themselves.

Wholeheartedly agree!  Both EZCA and CDEV are attempting to move away from
this, but much work remains.

John also proposed a basic error logging system, and I would suggest that
log messages consist of the following "atoms":

	severity
	status code (a ---small--- set)
	originating node
	originating application/sub-system/whatever
	time stamp
	arbitrarily long text

SLAC's error code system is like this, but heavily VMS.  A browser tool could
filter based on any of the atoms.  The status code could be useful to tell
the browser to NOT display any more of that particular flavor of message.
Something at the level of the EZCA or CDEV enumerated error codes.

Chip

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System