<%
# This template compute price of infrastructure
# based on the kind of machine the software is running on
# Demo performed during HashiConf 2019
# https://hashiconf.com/us/schedule/inversion-of-control-with-consul

regexp = 'web-.*'
srv_selector = Regexp.new(regexp)

costs = {
    'unknown'                 => 8,
    'base-10g-2018-q-1'       => 10,
    'base-10g-2015'           => 9,
    'base-1g-2013-1'          => 5,
    'base-1g-2015'            => 7,
    'base-1g-2013'            => 6,
    'cpustorage-10g-2018-h-1' => 15,
    'io-10g-2018-h-1'         => 12,
    'ram-1g-2015'             => 8,
    'ram-10g-2018-q-1'        => 9,
    'storage-10g-2015-1'      => 11,
    'storage-1g-2015-1'       => 10,
    'ssd-10g-2015'            => 12,
    'ram-10g-2015' => 42,
}


instances = {}
datacenters.each do |dc|
    services(dc:dc).each do |srv_name, tags|
        if srv_selector.match(srv_name)
            service(srv_name, dc:dc).each do |snode|
                instances[snode['Node']['Node']] = snode
            end
        end
    end
end


result = {
    'summary' => "Price for #{regexp}",
    'machines'=> instances.count,
    'price'   => 0,
    'flavors' => {},
}

instances.each do |name, snode|
  type = snode.service_or_node_meta_value('criteo_flavor')
  flavor_count = result['flavors'][type] || 0
  result['flavors'][type] = flavor_count + 1
  cost = costs[type] || costs['unknown']
  cost += 3 if snode.service_or_node_meta_value('os') == 'windows'
  result['price'] += cost
end

result['unkown_prices_for'] = result['flavors'].select{ |k| costs[k].nil? }

%><%= YAML.dump(result) %>