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#!/usr/bin/perl
use strict;
use JSON;
my $in;
while (<STDIN>) {
$in .= $_;
}
my %assets = %{JSON::XS::decode_json($in)};
print "Drawing family tree from JSON:\n\n";
while (my ($key, $value) = each %assets) {
print_tree ($key,0,undef);
last;
}
sub print_tree
{
my ($chassis_id,$indent,$parent,$max) = @_;
if (!defined($parent)) {
$parent = "";
}
if ($indent > 50) {
die "Possible loop detected.";
}
for (my $i = 0; $i < $indent; $i++) {
print "\t";
}
print " - " . $assets{$chassis_id}{sysName} . "\n";
while (my ($key, $value) = each %{$assets{$chassis_id}{neighbors}}) {
if ($key ne $parent) {
print_tree($key,$indent+1,$chassis_id);
}
}
}
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