RE: Passing Parameters to Event Handlers

Thanks for your reply.  The command is defined in command.cfg (I should've
included that in my email).  Following is the command definition and how I'm
trying to use it:

-- In command.cfg:
define command{
        command_name    router-host
        command_line    $USER5$/router-host.sh $HOSTNAME$ $HOSTSTATE$
$STATETYPE$ $HOSTATTEMPT$ $TIMET$ $ARG1$
        }

Note that $USER5$ is a path defined in my resources.cfg file and is used for
all of my custom commands/event handlers,etc and that works.

Using a template for the hosts, the event handler configuration looks like
this:

define host {
        name                            routers
        use                             standard-host
        event_handler_enabled           1
        event_handler                   router-host
        register                        0
        }

An acutal host configuration:
define host{
        use                     routers         ; Name of host template to
use
        host_name               jaxwanrt1
        alias                   JAX 7507
        address                 10.10.10.10 	; IP Changed to protect the
innocent
        parents                 jaxcoresw1,jaxcoresw2
	 }

Now, to pass the parameter to the command (to be parsed by $ARG1$) I have
tried modifying the event handler in the following ways:

event_handler		router-host!VALUE

This causes an error that says that router-host!VALUE is not defined

I also tried:

event_handler		router-host;VALUE
I forget where in the docs I saw something like this.  This does not produce
an error, but the value is not passed to $ARG1$.

Mike
-----Original Message-----
From: Stanley Hopcroft [mailto:[email protected]]
Sent: Tuesday, November 19, 2002 11:57 PM
To: Mike Dean
Cc: [email protected]
Subject: Re: [netsaint] Passing Parameters to Event Handlers


Dear Sir,

Is the command you wish to be performed as your event handler defined in 
command.cfg ?

I am using global event handlers (with other macro parameters) without
any problems.

command[global-host-handler]=$USER1$/global_host_handler $TIMET$ 
$HOSTNAME$ $HOSTSTATE$ $STATETYPE$ 
command[global-svc-handler]=$USER1$/global_svc_handler $TIMET$ 
$HOSTNAME$ '$SERVICEDESC$' $SERVICESTATE$ $STATETYPE$ '$OUTPUT$' 

If it's not working you could consider enabling the appropriate debug
option (rebuilding Netsaint with the compile time debug switch, DEBUG3)  
and potentially sending a bug report

However, the docco clearly distinguishes between commands used in 
services (with parms etc) and those used in event handlers.

It may be that it is __not__ possible.

You can find out for sure by running it in the foreground (no -d) in the 
debugger breaking at the local event handler and displaying the 
processed command line.

I really can't see why it doesn't, since process_macros is called in 
run_service_handler and this expands $ARG1$ etc.

Yours sincerely.


-- 
------------------------------------------------------------------------
Stanley Hopcroft
------------------------------------------------------------------------

'...No man is an island, entire of itself; every man is a piece of the
continent, a part of the main. If a clod be washed away by the sea,
Europe is the less, as well as if a promontory were, as well as if a
manor of thy friend's or of thine own were. Any man's death diminishes
me, because I am involved in mankind; and therefore never send to know
for whom the bell tolls; it tolls for thee...'

from Meditation 17, J Donne.