#
# Copyright 2019 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 storage::quantum::dxi::ssh::mode::throughput;

use base qw(centreon::plugins::templates::counter);

use strict;
use warnings;

my $instance_mode;

sub custom_volume_perfdata {
    my ($self, %options) = @_;
    
    $self->{output}->perfdata_add(label => $self->{result_values}->{label}, unit => 'B/s',
                                  value => $self->{result_values}->{volume},
                                  warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning-' . $self->{label}),
                                  critical => $self->{perfdata}->get_perfdata_for_output(label => 'critical-' . $self->{label})
                                  );
}

sub custom_volume_threshold {
    my ($self, %options) = @_;
    
    my $exit = $self->{perfdata}->threshold_check(value => $self->{result_values}->{volume},
                                               threshold => [ { label => 'critical-' . $self->{label}, exit_litteral => 'critical' }, { label => 'warning-'. $self->{label}, exit_litteral => 'warning' } ]);
    return $exit;
}

sub custom_volume_output {
    my ($self, %options) = @_;
    
    my ($volume_value, $volume_unit) = $self->{perfdata}->change_bytes(value => $self->{result_values}->{volume});
    my $msg = sprintf("%s: %s %s/s", $self->{result_values}->{display}, $volume_value, $volume_unit);
    return $msg;
}

sub custom_volume_calc {
    my ($self, %options) = @_;

    $self->{result_values}->{volume} = $instance_mode->convert_to_bytes(raw_value => $options{new_datas}->{$self->{instance} . '_' . $options{extra_options}->{label_ref}});
    $self->{result_values}->{display} = $options{extra_options}->{display_ref};
    $self->{result_values}->{label} = $options{extra_options}->{label_ref};
    
    return 0;
}

sub convert_to_bytes {
    my ($class, %options) = @_;
    
    my ($value, $unit) = split(/\s+/, $options{raw_value});
    if ($unit =~ /kb*/i) {
        $value = $value * 1024;
    } elsif ($unit =~ /mb*/i) {
        $value = $value * 1024 * 1024;
    } elsif ($unit =~ /gb*/i) {
        $value = $value * 1024 * 1024 * 1024;
    } elsif ($unit =~ /tb*/i) {
        $value = $value * 1024 * 1024 * 1024 * 1024;
    }

    return $value;
}

sub set_counters {
    my ($self, %options) = @_;
    
    $self->{maps_counters_type} = [
        { name => 'global', type => 0 }
    ];
    
    $self->{maps_counters}->{global} = [
        { label => 'read-rate', set => {
                key_values => [ { name => 'read_rate' } ],
                closure_custom_calc => $self->can('custom_volume_calc'),
                closure_custom_calc_extra_options => { label_ref => 'read_rate', display_ref => 'Read Rate' },
                closure_custom_output => $self->can('custom_volume_output'),
                closure_custom_perfdata => $self->can('custom_volume_perfdata'),
                closure_custom_threshold_check => $self->can('custom_volume_threshold'),
            }
        },
        { label => 'write-rate', set => {
                key_values => [ { name => 'write_rate' } ],
                closure_custom_calc => $self->can('custom_volume_calc'),
                closure_custom_calc_extra_options => { label_ref => 'write_rate', display_ref => 'Write Rate' },
                closure_custom_output => $self->can('custom_volume_output'),
                closure_custom_perfdata => $self->can('custom_volume_perfdata'),
                closure_custom_threshold_check => $self->can('custom_volume_threshold'),
            }
        },
    ];
}

sub new {
    my ($class, %options) = @_;
    my $self = $class->SUPER::new(package => __PACKAGE__, %options);
    bless $self, $class;
    
    $self->{version} = '1.0';
    $options{options}->add_options(arguments =>
                                { 
                                  "hostname:s"          => { name => 'hostname' },
                                  "ssh-option:s@"       => { name => 'ssh_option' },
                                  "ssh-path:s"          => { name => 'ssh_path' },
                                  "ssh-command:s"       => { name => 'ssh_command', default => 'ssh' },
                                  "timeout:s"           => { name => 'timeout', default => 30 },
                                  "sudo"                => { name => 'sudo' },
                                  "command:s"           => { name => 'command', default => 'syscli' },
                                  "command-path:s"      => { name => 'command_path' },
                                  "command-options:s"   => { name => 'command_options', default => '--get ingestrate' },
                                });
    
    return $self;
}

sub check_options {
    my ($self, %options) = @_;
    $self->SUPER::check_options(%options);

    if (defined($self->{option_results}->{hostname}) && $self->{option_results}->{hostname} ne '') {
        $self->{option_results}->{remote} = 1;
    }

    $instance_mode = $self;
}

sub manage_selection {
    my ($self, %options) = @_;

    $self->{global} = {};

    my ($stdout, $exit_code) = centreon::plugins::misc::execute(output => $self->{output},
                                                                options => $self->{option_results},
                                                                sudo => $self->{option_results}->{sudo},
                                                                command => $self->{option_results}->{command},
                                                                command_path => $self->{option_results}->{command_path},
                                                                command_options => $self->{option_results}->{command_options},
                                                                );
    # Output data:
    #     Write Throughput = 0.03 MB/s
    #     Read Throughput = 6.98 MB/s

    foreach (split(/\n/, $stdout)) {
        $self->{global}->{write_rate} = $1 if ($_ =~ /.*Write\sThroughput\s=\s(.*)$/i);
        $self->{global}->{read_rate} = $1 if ($_ =~ /.*Read\sThroughput\s=\s(.*)$/i);
    }
}

1;

__END__

=head1 MODE

Check ingest throughput rate.

=over 8

=item B<--hostname>

Hostname to query.

=item B<--warning-*>

Threshold warning.
Can be: 'read-rate', 'write-rate'.

=item B<--critical-*>

Threshold critical.
Can be: 'read-rate', 'write-rate'.

=item B<--ssh-option>

Specify multiple options like the user (example: --ssh-option='-l=centreon-engine' --ssh-option='-p=52').

=item B<--ssh-path>

Specify ssh command path (default: none)

=item B<--ssh-command>

Specify ssh command (default: 'ssh'). Useful to use 'plink'.

=item B<--timeout>

Timeout in seconds for the command (Default: 30).

=item B<--sudo>

Use 'sudo' to execute the command.

=item B<--command>

Command to get information (Default: 'syscli').

=item B<--command-path>

Command path.

=item B<--command-options>

Command options (Default: '--get ingestrate').

=back

=cut