CODEWITHSUNDEEP
rubyprocessbackgroundsinatra
spacemonkey
spacemonkey

Reputation: 20004

Start some process and then redirect back (even though process is still running) on Sinatra

I have a ruby script which takes some fare amount of time to finish running. I have tried running this code:

get "/run" do
  exec "ruby #{"/home/user/script.rb"} &"
  redirect '/'
end

But what happens is that, my Sinatra script then waits until the process is finished. How to execute that script so it is left to run in the background, and my Sinatra script just redirects back?

Thanks!

Upvotes: 1

Views: 1767

Answers (2)

omarshammas
omarshammas

Reputation: 631

I encountered a similar problem, and below is what worked for me.

get "/run" do

    task = Thread.new { 
        p "sleeping for 10 secs"
        sleep(10)
        p "woke up :)"

    }

    redirect '/'
end

Upvotes: 4

intellidiot
intellidiot

Reputation: 11228

You have to fork and detach the child process.

require 'rubygems'
require 'sinatra'

get "/" do
  "index"
end

get "/run" do
  Process.detach(fork{ exec "ruby script.rb &"})    
  redirect '/'
end

let's say script.rb is like

p "sleeping for 10 secs"
sleep(10)
p "woke up :)"

This works for me.

Upvotes: 3

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