#!/usr/bin/perl -w

use strict;
use JSON;

my $json;
@{$json->{data}} = ();

my $megacli = undef;

if (-x '/opt/MegaRAID/MegaCli/MegaCli64'){
  $megacli = '/opt/MegaRAID/MegaCli/MegaCli64';
}
elsif (-x '/opt/MegaRAID/MegaCli/MegaCli'){
  $megacli = '/opt/MegaRAID/MegaCli/MegaCli';
}

unless($megacli){
  print to_json($json);
  exit(0);
}

my $adapters = 0;
open (ADPCOUNT, "$megacli -adpCount -NoLog |")
        || die "error: Could not execute MegaCli -adpCount";

while (<ADPCOUNT>) {
  if ( m/Controller Count:\s*(\d+)/ ) {
    $adapters = $1;
    last;
  }
}
close ADPCOUNT;

if ($adapters > 0){
  push @{$json->{data}}, {"{#CONTROLLERNO}" => $adapters};
}

print to_json($json);
exit(0);