perl - Parallel requests in Mojolicious application -


i have perl application which, example, parallel searching in google:

use mojo::useragent; use mojo::ioloop;  $ua = mojo::useragent->new();  $delay = mojo::ioloop->delay(sub { 'done1 (should before render)'; });  foreach $i ( 1 .. 10 ) {     $delay->begin();      $ua->get("http://www.google.ru/search?q=$i" => sub {         $i;         $delay->end();     }); }  $delay->wait() unless $delay->ioloop->is_running();  'done2 (should before render)'; 'found! (render)';

and it's works fine:

6 1 7 10 3 9 2 5 8 4 done1 (should before render) done2 (should before render) found! (render)

when use code in mojolicious application in controller:

package myapp::google;  use mojo::base 'mojolicious::controller';  sub search {      $self = shift;      $delay = mojo::ioloop->delay(sub { $self->app->log->debug('done1 (should before render)') });      foreach $i ( 1 .. 10 ) {         $delay->begin();          $self->ua->get("http://www.google.ru/search?q=$i" => sub {             $self->app->log->debug($i);             $delay->end();         });     }      $delay->wait() unless $delay->ioloop->is_running();      $self->app->log->debug('done2 (should before render)');      return $self->render_text('found!');  }

it going in wrong way:

[wed may 15 11:07:32 2013] [debug] routing controller "myapp::google" , action "search". [wed may 15 11:07:32 2013] [debug] done2 (should before render) [wed may 15 11:07:32 2013] [debug] 200 ok (0.005689s, 175.778/s). [wed may 15 11:07:32 2013] [debug] 1 [wed may 15 11:07:32 2013] [debug] 8 [wed may 15 11:07:32 2013] [debug] 10 [wed may 15 11:07:32 2013] [debug] 5 [wed may 15 11:07:32 2013] [debug] 3 [wed may 15 11:07:32 2013] [debug] 9 [wed may 15 11:07:32 2013] [debug] 6 [wed may 15 11:07:32 2013] [debug] 2 [wed may 15 11:07:32 2013] [debug] 4 [wed may 15 11:07:32 2013] [debug] 7 [wed may 15 11:07:32 2013] [debug] done1 (should before render)

i guess $delay->wait() is not waiting. why going?

in case need disable automatic rendering calling method render_later controller. (http://mojolicio.us/perldoc/mojolicious/controller#render_later)

just add next string search controller:

$self->render_later;

complete example:

#!/usr/bin/perl -wl use mojolicious::lite;  '/' => sub {     $self = shift;     $self->render_later;     $delay = mojo::ioloop->delay(sub {         $self->app->log->debug('delay finished!');         $self->render(text => 'test!');     });     $i (0 .. 5) {         $end = $delay->begin;         mojo::ioloop->timer($i => sub {             $self->app->log->debug($i);             $end->();         });     } };  app->start;

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