workers created when request comes in?

workers created when request comes in?

[Joseph McDonald]

Is it possible to have unicorn spawn a new worker when a request comes
in, and only allow that child to service the one request?

In development mode it would be nice if I could just save my changes
and know that I will see them right away without having to HUP the
server.

thanks,
-joe
_______________________________________________
Unicorn mailing list - mongrel-unicorn@rubyforge.org
http://rubyforge.org/mailman/listinfo/mongrel-unicorn
Do not quote signatures (like this one) or top post when replying

Re: workers created when request comes in?

[Eric Wong]

Joseph McDonald <superjoe@gmail.com> wrote:
> Is it possible to have unicorn spawn a new worker when a request comes
> in, and only allow that child to service the one request?
> 
> In development mode it would be nice if I could just save my changes
> and know that I will see them right away without having to HUP the
> server.

Hi Joseph,

Yes, just send SIGQUIT to yourself anywhere inside the application
dispatch and it'll defer the exit until your application is done
processing.

You should be able to just make it middleware like this:

  # name inspired by the "shotgun" gem
  class Unicorn::Shotgun < Struct.new(:app)
    def call(env)
      Process.kill(:QUIT, 0)
      app.call(env)
    end
  end

-- 
Eric Wong
_______________________________________________
Unicorn mailing list - mongrel-unicorn@rubyforge.org
http://rubyforge.org/mailman/listinfo/mongrel-unicorn
Do not quote signatures (like this one) or top post when replying

Re: workers created when request comes in?

[Eric Wong]

Joseph McDonald <superjoe@gmail.com> wrote:
> On Tue, Dec 15, 2009 at 6:37 PM, Eric Wong <normalperson@yhbt.net> wrote:
> 
> > Yes, just send SIGQUIT to yourself anywhere inside the application
> > dispatch and it'll defer the exit until your application is done
> > processing.
> >
> > You should be able to just make it middleware like this:
> >
> >  # name inspired by the "shotgun" gem
> >  class Unicorn::Shotgun < Struct.new(:app)
> >    def call(env)
> >      Process.kill(:QUIT, 0)
                             ^-- Oops, that should be a $$, not 0
> >      app.call(env)
> >    end
> >  end
> 
> Thanks Eric,
> I added that middleware, but now unicorn exits after servicing one
> request.  I'd like unicorn to keep running and fork off a new child if
> a new request comes in.  Is that possible?

Yeah, just change the 0 to a $$ there, brain fart :x

With that middleware, it should prefork a worker, but then kill it
after every request (and a new one will be preforked).

-- 
Eric Wong
_______________________________________________
Unicorn mailing list - mongrel-unicorn@rubyforge.org
http://rubyforge.org/mailman/listinfo/mongrel-unicorn
Do not quote signatures (like this one) or top post when replying