/*****************************************************************
* This patch extends the nagios escalation functionality.
* It is based on nagios release version 3.2.0, affected files are: 
*	base/config.c , base/notifications.c ,
*	common/objects.c , include/objects.h ,
*	xdata/xodtemplate.c , xdata/xodtemplate.h
*
* All changes are free to use under the GPL
* 06.01.2010
* Vitali Voroth, DECOIT GmbH, Germany
* http://www.decoit.de
*****************************************************************/

// Introduction
It is now possible to define an escalation_condition
(similar to escalation_options [w,u,c,r]).

An escalation with an defined condition will only be escalated if
the current state of a particular host/service fits the condition.
One possible usecase for this could be the folowing scenario:
Think of two different escalations for the same service foo.
One of them should only escalate when service bar is OK,
the other should escalate if bar is CRITICAL or WARNING.
Now think about foo being the main service offered by an company
and the admin has to react instantly if it is down. Bar could
be an service indicating if the admin is in the office or at home
and the escalation would react as following:
If the admin is in the office, send an email first, after 5 minutes
send an SMS. 
If the admin is at home, send an SMS fist and after 30 minutes an second
SMS to the admin and the head of department.

This should be achieved without reloading or restarting the Nagios/Icinga
service.

// Syntax
The escalation_condition option is completely optional and can be
defined for host escalations as well as for service escalations.

The syntax is: 
escalation_condition <condition> ( [ & / | ] <condition> )*
where <condition> is either:
	host hostname = [u,d,o]
or
	service hostname.service_description] = [w,u,c,o].

As you can see, the escalation_condition  accepts a list of one or
more conditions separated by & (logical AND) or | (logical OR).
The meanings of [w,u,c,o,d] differ a bit from the ones used for
escalation_options. 
	w = WARNING
	u = UNKNOWN
	c = CRITICAL
	o = OK for services or UP for hosts (one could think of ONLINE)
	d = DOWN for hosts

	
// Example
define serviceescalation {
	host_name 		localhost
	service_description 	HTTP
	first_notification 	5
	contact_groups 		admins, managers
	escalation_condition 	host linux=d | service linux.SSH=w,c
	}

This example escalation would be escalated if the HOST 'linux' is DOWN or 
the Service 'linux.SSH' is WARNING or CRITICAL.