ConfigRecursive created by rasouza - https://repl.it/@rasouza/ConfigRecursive

main.rb

require 'bundler/inline'
require './mock_classes'

gemfile true do
  source 'http://rubygems.org'
  gem 'config'
end

Config.load_and_set_settings(Config.setting_files(".", "dev"))

events = Settings.strategies.to_hash

def register_events_recursive(node, path = "", events = {})
  events[path[1..-1]][:strategy] = Object::const_get(node[:strategy]) if node.has_key?(:strategy)
  events[path[1..-1]][:message] = Object::const_get(node[:message]) if node.has_key?(:message)
  events[path[1..-1]][:sender] = Object::const_get(node[:sender]) if node.has_key?(:sender)

  if (not node.has_key?(:strategy))
    node.each_pair do |k, v|
      node[k] = register_events_recursive(v, "#{path}.#{k}", events)
    end
  end

  node
end

new_events = {}
new_events.default_proc = proc { |hash, key| hash[key] = Hash.new } # creates Hash if key doesn't exist
events_chg = register_events_recursive(events, "", new_events)
p new_events

mock_classes.rb

class EmailStrategy
end

class BankAccountChangedMailMessage
end

class DefaultStrategy
end

settings.yml

log:
  path: STDOUT
  level: error

queue:
  host: queue
  name: messages
  channel: jaime_topics

strategies:
  bank_account:
    changed:
      strategy: EmailStrategy
      message: BankAccountChangedMailMessage

  default:
    action:
      strategy: DefaultStrategy

mandrill:
  api_key: <%= ENV['MANDRILL_API_KEY'] %>