How to exit a program running under a Morbo or Hypnotoad server

Question

In the programs running under the Morbo (and Hypnotoad) server a call of exit() is silently ignored and effectively works as a return from the callback. An END block fires as usually but a program itself never exits.

#!/usr/bin/perl

use Modern::Perl;
use Mojolicious::Lite;

END {
  say "END block";
}

 Mojo::IOLoop->timer(5 => sub {
  say "Sleeping...";
  sleep 15;
  say "Before...";
  exit(1);
  say "Never seen";
});

app->start;

$ morbo test.pl
Server available at http://127.0.0.1:3000
Sleeping...
Before...
END block
^C

The program does exit. It's `morbo` that's still running. – ikegami Dec 11 '17 at 15:58 — ikegami, Dec 11 '17 at 15:58
...so you're asking how to kill the parent process. – ikegami Dec 11 '17 at 17:50 — ikegami, Dec 11 '17 at 17:50

score 1 · Answer 1 · answered Oct 12 '19 at 15:29

When starting a Mojolicious-app something bad could happen (no database-connection). I decided to change the root-URL of my app.

In Myapp.pm:

sub startup {
    my $app = shift;
    $app->plugin('Config');
    ...
    my $r = $app->routes;
    $r->get('/')->to('root#index')->name('root');

    eval {
        $app->check_important_things_which_can_die;
    };
    if ($@) {
       $r->find('root')->remove;
       $r->get('/')->to('Error::Root#index')->name('error_root');
    }

I don't know wether this works in a running application after routing has been used.

score 0 · Answer 2 · answered Oct 16 '19 at 21:52

0

You can issue a kill to the parent process ID from within your Handler:

system "kill -s INT " . getppid();

This will gracefully exit the server process, killing any workers that have been launched. Also works for Hypnotoad.

answered Oct 16 '19 at 21:52

Elle Fie

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How to exit a program running under a Morbo or Hypnotoad server

2 Answers2