Credential adapter; wraps hash and converts keys into methods

credential_adapter.rb

module Patterns
  class CredentialAdapter
    attr_reader :config_params

    def initialize(config_params ={})
      @config_params = config_params
    end

    def method_missing(message, *args, &block)
      if config_params.include?(message)
        config_params[message]
      else
        nil
      end
    end

    def respond_to?(method_name, include_private = false)
      config_params.include?(method_name) || super
    end
  end
end