Class: RequestRecorder::Middleware

Inherits:
Object
  • Object
show all
Defined in:
lib/request_recorder/middleware.rb

Constant Summary collapse

MARKER = 
"request_recorder"
MAX_STEPS = 
100
SEPARATOR = 
"-"
AUTH = 
:frontend_auth

Instance Method Summary collapse

Constructor Details

#initialize(app, options = {}) ⇒ Middleware

Returns a new instance of Middleware.



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# File 'lib/request_recorder/middleware.rb', line 19

def initialize(app, options={})
  @app = app
  @store = options.fetch(:store)
  @auth = options[AUTH]
  @headers = options[:headers] || {}
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/request_recorder/middleware.rb', line 26

def call(env)
  # keep this part as fast as possible, since 99.99999% of requests will not need it
  return @app.call(env) unless "#{env["PATH_INFO"]}-#{env["QUERY_STRING"]}-#{env["HTTP_COOKIE"]}".include?(MARKER)

  if env["PATH_INFO"].to_s.starts_with?("/#{MARKER}/")
    key = env["PATH_INFO"].split("/")[2]
    render_frontend(env, key)
  else
    result = nil
    log = capture_logging do
      begin
        result = @app.call(env)
      rescue Exception => e
        result = e
      end
    end

    steps_left, id = read_state_from_env(env)
    return [500, {}, "#{MARKER} exceeded maximum value #{MAX_STEPS}"] if steps_left > MAX_STEPS
    id = persist_log(id, log)

    if result.is_a?(Exception)
      raise result # Do not mess up the apps normal exception behavior
    else
      path = [env["PATH_INFO"], env["QUERY_STRING"]].compact.join("?")
      extra_headers = chrome_logger_headers(log, path) if @auth && @auth.call(env)
      response_with_data_in_cookie(result, steps_left, id, extra_headers)
    end
  end
end