generate graphviz dot file for NiftyCloud Firewall map

niftycloud-fw-visualization.awk

#!/usr/bin/awk -f
BEGIN {
  FS="##";
  print "digraph G {";
  print "\t\"0.0.0.0/0\" [label = \"インターネット\"];";
}

$7 ~ /CIDR|IP|GRPNAME/ {
  src = $8;
}

/^PERMISSION/ {
  dst = $2;
  pair = sprintf("\"%s\" -> \"%s\"", src, dst);
  label = $3":"$4":"$5;

  if (grants[pair]) {
    grants[pair] = grants[pair]" "label;
  } else {
    grants[pair] = label;
  }
}

END{
  for (pair in grants) {
    label = grants[pair];
    printf("\t%s [label = \"%s\"]\n", pair, label);
  }

  print "}"
}

example)

% nifty-describe-security-groups --show-empty-fields --delimiter "##" | \
% ./niftycloud-fw-visualization.awk | \
% dot -Tpng > fw.png