AW: NEB: Difference between event types

[Mohr James]

Read the source. Read the source. Read the source. All they ever tell me is "Read the source." ;-)

I started doing just that (ie. Backtracing the functions), but stopped after a while because my C is so rusty and I lost the flow a couple of times. However, I think you are right with the key functions being broker.c and checks.c. I'm a visual person, so I think the best thing for me is to draw out the connections.

I started putting my notes together here:

http://www.linux-tutorial.info/nagios_event_broker.htm

If there is anything wrong, please let me know, but keep in mind that it is an work in progress. It's not accessable from the homepage, so you'll have to use the direct link.

Regards,

Jim Mohr

>> -----Ursprüngliche Nachricht-----
>> Von: Andreas Ericsson [mailto:ae at op5.se] 
>> Gesendet: Montag, 24. Oktober 2005 22:13
>> An: Mohr James
>> Cc: Nagios-users at lists.sourceforge.net
>> Betreff: Re: [Nagios-users] NEB: Difference between event types
>> 
>> Mohr James wrote:
>> > What is the difference between these event types?
>> > 
>> > NEBCALLBACK_SERVICE_STATUS_DATA
>> > NEBCALLBACK_SERVICE_CHECK_DATA
>> > 
>> > Is the CHECK_DATA when Nagios starts a check is this is the status 
>> > data for the step of actually doing the check, whereas 
>> STATUS_DATA is 
>> > the data returned by the check or sent by send_nsca?
>> > 
>> 
>> I think STATUS_DATA is what Nagios passes to the module when 
>> it updates the logged status of the service. This happens 
>> once for all services at load-time and once when 
>> max_attempts have been reached.
>> 
>> > So, for example, if I was only interested in the data 
>> returned by the 
>> > check or sent by send_nsca I would need a callback for the 
>> > NEBCALLBACK_SERVICE_CHECK_DATA event. Is that right?
>> > 
>> 
>> I should think so, yes. You can check broker.c for 
>> confirmation though. 
>> If you backtrace the function flow scheme you'll find how 
>> it's called from checks.c (I think).
>> 
>> -- 
>> Andreas Ericsson                   andreas.ericsson at op5.se
>> OP5 AB                             www.op5.se
>> Tel: +46 8-230225                  Fax: +46 8-230231
>> 


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