S├ębastien Aperghis-Tramoni

NAME

SNMP::ToolBox - Set of SNMP-related utilities

VERSION

Version 0.03

SYNOPSIS

    use SNMP::ToolBox;

    # sort a list of OIDs
    @oid_list = sort by_oid @oid_list;

    # OID-encode a string
    $idx = oid_encode($name);

DESCRIPTION

This module contains a set of functions useful for writing SNMP-related programs and modules: by_oid, find_next_oid(), oid_encode().

EXPORTS

The following functions are exported by default:

    by_oid  find_next_oid  oid_encode

FUNCTIONS

by_oid

Sub-routine suitable for being used with sort for sorting OIDs. Two implementations are included in this module: a classical one, by splitting the OIDs and comparing each pair of components, and another, by evaluating the OIDs as Perl v-strings. The fastest one for the running version of Perl will be used.

Example:

    @oid_list = sort by_oid @oid_list;

Even though the implementations proposed in this module are pretty good, it is suggested to use Sort::Key::OID's oidsort() when possible, for it is roughly 40-50 times faster. Here is an example on how to always use the best function available:

    use constant HAVE_SORT_KEY_OID
        => eval "use Sort::Key::OID 0.04 'oidsort'; 1" ? 1 : 0;

    @oid_list = HAVE_SORT_KEY_OID
              ? oidsort(@oid_list)
              : sort by_oid @oid_list;

Using a constant allows the Perl compiler to optimise away the dead code early.

find_next_oid

Generic implementation of the algorithm to find the OID following a given one in an ordered list of OIDs. Typically needed for implementing a "getnext" feature in nearly any kind of server-side SNMP extension (pass_persist, SMUX, AgentX, etc).

Expects the list of OIDs as an arrayref, the OID to request against and an optional context. Returns the appropriate "next" OID or the string "NONE".

Arguments:

1. (mandatory) reference to an array containing the list of OIDs
2. (optional) OID to request against
3. (optional) OID context; when given, no OID outside of this contexte will be returned

Exemple:

    my $oid = $walk_base;

    while ($oid ne "NONE") {
        $oid = get_next_oid(\@oid_list, $oid, $walk_base);
        # ...
    }

oid_encode

Returns the OID-encoded equivalent of the string given in argument.

Example:

    my $idx = oid_encode($name);

SUPPORT

You can find documentation for this module with the perldoc command.

    perldoc SNMP::ToolBox

You can also look for information at:

BUGS

Please report any bugs or feature requests to bug-snmp-toolbox at rt.cpan.org, or through the web interface at https://rt.cpan.org/Public/Dist/Display.html?Name=SNMP-ToolBox. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

AUTHOR

Sébastien Aperghis-Tramoni <sebastien at aperghis.net>

LICENSE AND COPYRIGHT

Copyright 2011 Sebastien Aperghis-Tramoni.

This program is free software; you can redistribute it and/or modify it under the terms of either: the GNU General Public License as published by the Free Software Foundation; or the Artistic License.

See http://dev.perl.org/licenses/ for more information.




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