convert-tfstate.rb

#!/usr/bin/env ruby

require 'json'

tfstate_file = ARGV[0]

tfstate = ''
File.open(tfstate_file, 'r') do |f|
  tfstate = JSON.load(f)
end

tfstate['modules'][0]['resources'].each do |name, resouce|
  if resouce['type'] == 'aws_alb'
    resouce['primary']['attributes']['load_balancer_type'] = 'application'
  end

  if resouce['type'] == 'aws_alb_target_group'
    resouce['primary']['attributes']['target_type'] = 'instance'
  end

end

puts JSON.pretty_generate(tfstate)