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Full Discussion: Parsing a $VARIABLE within a script.
Top Forums Shell Programming and Scripting Parsing a $VARIABLE within a script. Post 302707559 by Don Cragun on Saturday 29th of September 2012 02:30:11 AM
Old 09-29-2012
This is a lot to absorb and your last message clears up some of the issues, but I'm still confused about several issues. I think I understand some things now. I assume that:
  1. The 40K+ files named "Event" followed by 8 lowercase hexadecimal digits are templates for 40K+ different types of event messages.
  2. Someplace else there are a bunch (40K+ or less) of SetScript files.
  3. You have a way to get an individual event message stored in a shell variable referenced by $EVENTMESSAGE.
  4. SetScript files or Eventxxxxxxxx files enable some external process to format an external event reported by some piece of hardware or software into an event message using variables that are somehow made available to the environment of that external process.
  5. You showed the following event message in your last posting:
    Code:
    Sep 28, 2012 7:43:57 AM MDT
 
- An "iddmodAgentDownTrap" event has occurred, from a device designated as type Host_IBMDirector, named lpvd-sqldv01.c.utah.com.
 
This trap is sent when an Insight agent is detected to be down. It is then resent synchronously with the Alarm traps, every 5 minutes (default frequency) as long as the Insight agent is still detected to be down.
 
Agent Name = ms2008-default@lpvd-sqldv01
Agent Type = ms2005
Agent Status = down

    which is supposed to correspond to Eventxxxxxxxx file "Event01169b15" which says that events of this type are formatted as:
    Code:
    {d "%w- %d %m-, %Y - %T"} - An "iddmodAgentDownTrap" event has occurred, from a device designated as type: {t}, named: {m}. 
 
This trap is sent when an Insight agent is detected to be down. It is then resent synchronously with the Alarm traps, every 5 minutes (default frequency) as long as the Insight agent is still detected to be down. 
 
Agent Name = {S 1} 
Agent Type = {S 3} 
Agent Status = {T iddmodAlarmSummaryUpDown 4}

    but the 1st line of Event01169b15 turned into three lines in the event message. I believe the two extra newlines were a cut and paste error and would not appear in an actual event message.
  6. In message #6 in this thread you showed a SetScript that contained the line:
    Code:
    echo "Server Instance Error: " $SI

    but showed the corresponding line in the event message to be:
    Code:
    Server Instance: 31415

    I assume it was another cut and paste error that caused " Error" to be in the SetScript file but not in the event message.
Are the above assumptions correct?

When your script is called will it always be given a single event message stored in the variable $EVENTMESSAGE, or is it given a file from which it reads multiple event messages? Is there any way for your program to determine which Eventxxxxxxxx file is associated with an event message?
Is there any way to determine which SetScript file is associated with an Eventxxxxxxxx file? Is there any way to determine which SetScript file is associated with a given event message?

And, again, more concretely, and most importantly, assuming that one of your scripts is called with EVENTMESSAGE set to:
Code:
Sep 27,2012 09:03:08 PM - A "LiveHealthAlarm" event has occurred, from SwCiscoIOS device, named co-lpvi-6509-Q67-1.c.utah.com.
 
eHealth Alarm Start Time - Sep 27,2012 09:03:08 PM
eHealth Alarm Occurrence - 305954
Element Name - co-lpvi-6509-Q67-1.c.utah.com-RH
Element Alias - co-lpvi-6509-Q67-1.c.utah.com-RH
Profile - _Router or Switch - Failure
Exception Type - basicEvent
Description - Generic Syslog message
eHealth Alarm ID - 1000042

exactly what output do you want your script to produce? And, does your script know which Eventxxxxxxxx file and which SetScript file are associated with that event?
 

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