#!/usr/bin/perl
use strict;
use warnings;

use YAML qw/ LoadFile DumpFile Dump /;
use Data::Dumper;
local $Data::Dumper::Indent = 1;
use constant DIV => '-' x 20 . "\n";

my $routers = {
  'routers' => {
    'router1' => '192.168.1.2',
    'router2' => '192.168.1.3',
    'router3' => '192.168.1.4',
    'router4' => '192.168.1.5',
    'router5' => '192.168.1.6',
  }
};
my $groups = {
  'groups' => {
    'group1' => [
      'router1',
      'router5',
    ],
    'group2' => [
      'router1',
      'router2',
      'router3',
    ],
    'group3' => [
      'router2',
      'router3',
      'router4',
    ]
  }
};

print "Dumping initial data...\n" . DIV;
print Dumper $routers, $groups;

print "Writing YAML file...\n";
DumpFile( "./yaml-test.conf", $routers, $groups );

print "Reading YAML file...\n";
( $routers, $groups ) = LoadFile( "yaml-test.conf" );

print "Dumping YAML'd data...\n" . DIV;
print Dumper $routers, $groups;

print "Dumping YAML'd data with YAML...\n" . DIV;
print Dump $routers, $groups;