Proxy to staging

README.md

Prereqs

1. bundle install
2. Copy your _appoptics_session cookie from staging.

Start the server

Start the server on port 9989

WEBPACK_PORT=4321 SESSION_COOKIE='_appoptics_session=[redacted]; path=/;' bundle exec rackup config.ru -p 9989

config.ru

require 'rack-proxy'

abort "WEBPACK_PORT required" unless ENV['WEBPACK_PORT']
abort "SESSION_COOKIE required" unless ENV['SESSION_COOKIE']

class ProxyAppoptics < Rack::Proxy
  def rewrite_env(env)
    env['HTTP_COOKIE'] = ENV['SESSION_COOKIE']
    env
  end

  def rewrite_response(resp)
    status, headers, response = resp

    body = response.to_s
      .gsub(%r{https://cdn.appoptics.com/assets/(.*)-[A-z0-9]+\.js}, "http://0.0.0.0:#{ENV['WEBPACK_PORT']}/assets/\\1.js")
      .gsub('environment: "staging"', 'environment: "dev", instrument: false')

    [status, headers, [body]]
  end
end

use ProxyAppoptics, {backend: "https://my-stg.appoptics.com"}

run proc {|env| [404, {}, ["not found"]]}

Gemfile

source "https://rubygems.org"

gem "rack"
gem "rack-proxy"