#
# Copyright 2020 Centreon (http://www.centreon.com/)
#
# Centreon is a full-fledged industry-strength solution that meets
# the needs in IT infrastructure and application monitoring for
# service performance.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

package network::hp::procurve::snmp::mode::memory;

use base qw(centreon::plugins::mode);

use strict;
use warnings;

sub new {
    my ($class, %options) = @_;
    my $self = $class->SUPER::new(package => __PACKAGE__, %options);
    bless $self, $class;
    
    $options{options}->add_options(arguments =>
                                {
                                  "warning:s"               => { name => 'warning' },
                                  "critical:s"              => { name => 'critical' },
                                });

    return $self;
}

sub check_options {
    my ($self, %options) = @_;
    $self->SUPER::init(%options);
    
    if (($self->{perfdata}->threshold_validate(label => 'warning', value => $self->{option_results}->{warning})) == 0) {
       $self->{output}->add_option_msg(short_msg => "Wrong warning threshold '" . $self->{option_results}->{warning} . "'.");
       $self->{output}->option_exit();
    }
    if (($self->{perfdata}->threshold_validate(label => 'critical', value => $self->{option_results}->{critical})) == 0) {
       $self->{output}->add_option_msg(short_msg => "Wrong critical threshold '" . $self->{option_results}->{critical} . "'.");
       $self->{output}->option_exit();
    }
}

sub run {
    my ($self, %options) = @_;
    $self->{snmp} = $options{snmp};

    my $oid_hpGlobalMemEntry = '.1.3.6.1.4.1.11.2.14.11.5.1.1.2.2.1.1';
    my $oid_hpGlobalMemSlotIndex = '.1.3.6.1.4.1.11.2.14.11.5.1.1.2.2.1.1.1';
    my $oid_hpGlobalMemTotalBytes = '.1.3.6.1.4.1.11.2.14.11.5.1.1.2.2.1.1.5'; # in B
    my $oid_hpGlobalMemAllocBytes = '.1.3.6.1.4.1.11.2.14.11.5.1.1.2.2.1.1.7'; # in B
    my $oid_hpGlobalMemFreeBytes = '.1.3.6.1.4.1.11.2.14.11.5.1.1.2.2.1.1.6'; # in B
    my $result = $self->{snmp}->get_table(oid => $oid_hpGlobalMemEntry, nothing_quit => 1);
    
    $self->{output}->output_add(severity => 'OK',
                                short_msg => 'All memories are ok.');
    
    foreach my $oid (keys %$result) {
        next if ($oid !~ /^$oid_hpGlobalMemSlotIndex/);
        $oid =~ /\.([0-9]+)$/;
        my $instance = $1;
        my $memory_used = $result->{$oid_hpGlobalMemAllocBytes . '.' . $instance};
        my $memory_free = $result->{$oid_hpGlobalMemFreeBytes . '.' . $instance};
        my $total_size = $result->{$oid_hpGlobalMemTotalBytes . '.' . $instance};
        my $prct_used = $memory_used * 100 / $total_size;
        my $prct_free = 100 - $prct_used;
        
        my $exit = $self->{perfdata}->threshold_check(value => $prct_used, threshold => [ { label => 'critical', exit_litteral => 'critical' }, { label => 'warning', exit_litteral => 'warning' } ]);
        my ($total_value, $total_unit) = $self->{perfdata}->change_bytes(value => $total_size);
        my ($used_value, $used_unit) = $self->{perfdata}->change_bytes(value => $memory_used);
        my ($free_value, $free_unit) = $self->{perfdata}->change_bytes(value => $memory_free);
        
        $self->{output}->output_add(long_msg => sprintf("Memory '%s' Total: %s Used: %s (%.2f%%) Free: %s (%.2f%%)", $instance,
                                            $total_value . " " . $total_unit,
                                            $used_value . " " . $used_unit, $prct_used,
                                            $free_value . " " . $free_unit, $prct_free));
        if (!$self->{output}->is_status(value => $exit, compare => 'ok', litteral => 1)) {
             $self->{output}->output_add(severity => $exit,
                                        short_msg => sprintf("Memory '%s' Total: %s Used: %s (%.2f%%) Free: %s (%.2f%%)", $instance,
                                            $total_value . " " . $total_unit,
                                            $used_value . " " . $used_unit, $prct_used,
                                            $free_value . " " . $free_unit, $prct_free));
        }
        
        $self->{output}->perfdata_add(label => "used_" . $instance, unit => 'B',
                                      value => $memory_used,
                                      warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning', total => $total_size),
                                      critical => $self->{perfdata}->get_perfdata_for_output(label => 'critical', total => $total_size),
                                      min => 0, max => $total_size);
    }
    
    $self->{output}->display();
    $self->{output}->exit();
}

1;

__END__

=head1 MODE

Check memory usage (hpNetSwitch.mib).

=over 8

=item B<--warning>

Threshold warning in percent.

=item B<--critical>

Threshold critical in percent.

=back

=cut