Does em-synchrony support asynchronous call on oracle database?

[Gwowen Fu]

Hi,

I want to make two asynchronous calls on a Ruby on Rails server. One HTTP request and one database query. After both calls are finished then I will merge them to become one single JSON object.

After spending many hours on the internet, the closest thing I could find is em-synchrony. Just like EventMachine and Fiber, no oracle database support is mentioned anywhere.

Is it doable?

If that's not the right approach, how could it be done? Should I create a new Thread for one of the request then join them?

require 'eventmachine'

require 'em-synchrony'

require 'em-synchrony/em-http'

EM.synchrony do

  multi = EventMachine::Synchrony::Multi.new

  multi.add :page1, EventMachine::HttpRequest.new("http://google.com/search?q=eventmachine").aget

  multi.add :page2, { return "5" }

  data = multi.perform.responses[:callback].values

  EM::Synchrony::Iterator.new(data, 2).each do |page, iter|

  end

  puts "All done! Stopping event loop."

  EventMachine.stop

end