Quick rake task to automate setting CORS headers on fastly

fastly.rake

namespace :fastly do

  desc "set fastly cors headers to fix chrome/firefox font loading issues"
  task allow_cors: :environment do    

    # check for the Cors Allow header

    versions = Yajl.load(Excon.get("https://api.fastly.com/service/#{ENV['FASTLY_SERVICE_ID']}/version",
      :headers => {'Fastly-Key'=>ENV['FASTLY_API_KEY']}).body)
    last_version = versions.last['number']

    exists = Excon.get("https://api.fastly.com/service/#{ENV['FASTLY_SERVICE_ID']}/version/#{last_version}/header/Cors%20Allow",
      :headers => {'Fastly-Key'=>ENV['FASTLY_API_KEY']}).status
    
    if(exists == 200)
      puts "Allow Cors already set. Done."
    else

      cloned = Yajl.load(Excon.put("https://api.fastly.com/service/#{ENV['FASTLY_SERVICE_ID']}/version/#{last_version}/clone",
        :headers => {'Fastly-Key'=>ENV['FASTLY_API_KEY']}).body)

      cloned_version = cloned['number']

      puts cloned

      response = Yajl.load(Excon.post("https://api.fastly.com/service/#{ENV['FASTLY_SERVICE_ID']}/version/#{cloned_version}/header",
        :headers => {'Fastly-Key'=>ENV['FASTLY_API_KEY']},
        :body => 'name=Cors Allow&type=response&action=set&dst=http.Access-Control-Allow-Origin&src="*"&ignore_if_set=0&priority=10').body)    

      puts response

      activated = Excon.put("https://api.fastly.com/service/#{ENV['FASTLY_SERVICE_ID']}/version/#{cloned_version}/activate",
        :headers => {'Fastly-Key'=>ENV['FASTLY_API_KEY']}).status

      if(activated == 200)
        puts "Allow Cors header set. Done."
      end

    end

  end

end