#!/usr/bin/env perl
use 5.014;
use strict;
use warnings;
use YAML;
use Cwd 'abs_path';
use Data::Dumper;

if($#ARGV!=0)
{
  die "usage: show_flow.pl file.yml\n";
}
my $filename = abs_path($ARGV[0]);
my $ylog = YAML::LoadFile($filename);

foreach my $i (@{$ylog->{'flow'}})
{
  foreach my $key (keys %{$i})
  {
    print "$key\n";
  }
}
#EOF