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package Nagios::Plugin::Threshold;
use 5.006;
use strict;
use warnings;
use base qw(Class::Accessor::Fast);
__PACKAGE__->mk_accessors(qw(warning critical));
use Nagios::Plugin::Range;
use Nagios::Plugin::Functions qw(:codes nagios_die);
our ($VERSION) = $Nagios::Plugin::Functions::VERSION;
sub get_status
{
my ($self, $value) = @_;
if ($self->critical->is_set) {
return CRITICAL if $self->critical->check_range($value);
}
if ($self->warning->is_set) {
return WARNING if $self->warning->check_range($value);
}
return OK;
}
sub _inflate
{
my ($self, $value, $key) = @_;
# Return an undefined range if $value is undef
return Nagios::Plugin::Range->new if ! defined $value;
# For refs, check isa N::P::Range
if (ref $value) {
nagios_die("Invalid $key object: type " . ref $value)
unless $value->isa("Nagios::Plugin::Range");
return $value;
}
# Otherwise parse $value
my $range = Nagios::Plugin::Range->parse_range_string($value);
nagios_die("Cannot parse $key range: '$value'") unless(defined($range));
return $range;
}
sub set_thresholds
{
my ($self, %arg) = @_;
# Equals new() as a class method
return $self->new(%arg) unless ref $self;
# On an object, just acts as special mutator
$self->set($_, $arg{$_}) foreach qw(warning critical);
}
sub set
{
my $self = shift;
my ($key, $value) = @_;
$self->SUPER::set($key, $self->_inflate($value, $key));
}
# Constructor - inflate scalars to N::P::Range objects
sub new
{
my ($self, %arg) = @_;
$self->SUPER::new({
map { $_ => $self->_inflate($arg{$_}, $_) } qw(warning critical)
});
}
1;
__END__
=head1 NAME
Nagios::Plugin::Threshold - class for handling Nagios::Plugin thresholds.
=head1 SYNOPSIS
# NB: This is an internal Nagios::Plugin class.
# See Nagios::Plugin itself for public interfaces.
# Constructor
$t = Nagios::Plugin::Threshold->set_thresholds(
warning => $warning_range_string,
critical => $critical_range_string,
);
# Value checking - returns CRITICAL if in the critical range,
# WARNING if in the warning range, and OK otherwise
$status = $t->get_status($value);
# Accessors - return the associated N::P::Range object
$warning_range = $t->warning;
$critical_range = $t->critical;
=head1 DESCRIPTION
Internal Nagios::Plugin class for handling threshold data. See
Nagios::Plugin for public interfaces.
A threshold object contains (typically) a pair of ranges, associated
with a particular severity e.g.
warning => range1
critical => range2
=head1 AUTHOR
This code is maintained by the Nagios Plugin Development Team: see
http://nagiosplug.sourceforge.net.
=head1 COPYRIGHT AND LICENSE
Copyright (C) 2006-2007 Nagios Plugin Development Team
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut
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