#!/usr/bin/perl -w

use strict;
use File::Which;
use JSON;

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

my $cli = which('hpacucli') || which('ssacli');

# hpacucli or ssacli utility is needed
if (not defined $cli){
  print to_json($json);
  exit(0);
}

open( CLI, "$cli controller all show status|" )
  or die "An error occured while running $cli: $!";

foreach my $line (<CLI>){
  if ( $line =~ m/Another instance of hpacucli is running! Stop it first\./i ){
    die "Another instance of hpacucli is running\n";
  }
  elsif ( $line =~  m/(.*) in Slot (\d+)/i ) {
    push @{$json->{data}}, {"{#MODEL}" => $1, "{#SLOT}" => $2};
  }
}
close CLI;
print to_json($json);
exit(0);