Ahoy ApplicationController for REST API request, response log

application_controller.rb

class ApplicationController < ActionController::Base
  after_action :track_action

  protected

  def track_action
    ahoy.track "Called API", request.path_parameters.merge(log_request, log_response)
  end

  private

  # https://stackoverflow.com/a/28687803/1399891
  def log_request
    http_envs = {}.tap do |envs|
      request.headers.each do |key, value|
        envs[key] = value if key.downcase.starts_with?('http') || key.downcase.starts_with?('x') || key.downcase.starts_with?('content')
      end
    end

    {
      request: {
        method: request.method,
        to: request.url,
        from: request.remote_ip,
        headers: http_envs,
        body: parse_json(request.raw_post)
      }
    }
  end

  def log_response
    {
      response: {
        status: response.status,
        headers: response.headers,
        body: parse_json(response.body)
      }
    }
  end

  def parse_json string
    JSON.parse(string) rescue string
  end
end