Wes: Created page with "{{helper|Watcher|code=agent/helpers/watcher.c|documentation=watcher}} The '''watcher''' does what it's named: it watches variables and any time an incoming request is made for t..."

2011-07-20T22:50:04Z

Created page with "{{helper|Watcher|code=agent/helpers/watcher.c|documentation=watcher}} The '''watcher''' does what it's named: it watches variables and any time an incoming request is made for t..."

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{{helper|Watcher|code=agent/helpers/watcher.c|documentation=watcher}}

The '''watcher''' does what it's named: it watches variables and any time an incoming request is made for the [[OID]] assigned to it, it returns the current value of the variable. It is the absolute simplest way to tie a memory address to an OID with a single line of code.

== Example Usage ==

static int my_int = 42;
netsnmp_register_read_only_int_scalar("myVariable",
my_oid,
OID_LENGTH(my_oid),
&my_int, NULL);
== Types Supported ==

There are a number of scalar convenience functions that can be watched.

netsnmp_register_ulong_scalar( /* ... */ );
netsnmp_register_read_only_ulong_scalar( /* ... */ );
netsnmp_register_long_scalar( /* ... */ );
netsnmp_register_read_only_long_scalar( /* ... */ );
netsnmp_register_int_scalar( /* ... */ );
netsnmp_register_read_only_int_scalar( /* ... */ );
netsnmp_register_read_only_counter32_scalar( /* ... */ );

The _read_only_ variants should be use if you don't want to support [[SET]] operations to the value.

Watcher - Revision history

Wes: Created page with "{{helper|Watcher|code=agent/helpers/watcher.c|documentation=watcher}} The '''watcher''' does what it's named: it watches variables and any time an incoming request is made for t..."