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package Mojo::Server::Morbo;
use Mojo::Base -base;
use Mojo::Home;
use Mojo::Server::Daemon;
use POSIX 'WNOHANG';
has watch => sub { [qw(lib templates)] };
# "All in all, this is one day Mittens the kitten won't soon forget.
# Kittens give Morbo gas.
# In lighter news, the city of New New York is doomed.
# Blame rests with known human Professor Hubert Farnsworth and his tiny,
# inferior brain."
sub check_file {
my ($self, $file) = @_;
# Check if modify time and/or size have changed
my ($size, $mtime) = (stat $file)[7, 9];
return unless defined $mtime;
my $cache = $self->{cache} ||= {};
my $stats = $cache->{$file} ||= [$^T, $size];
return if $mtime <= $stats->[0] && $size == $stats->[1];
return $cache->{$file} = [$mtime, $size];
}
sub run {
my ($self, $app) = @_;
# Watch files and manage worker
$SIG{CHLD} = sub { $self->_reap };
$SIG{INT} = $SIG{TERM} = $SIG{QUIT} = sub {
$self->{finished} = 1;
kill 'TERM', $self->{running} if $self->{running};
};
unshift @{$self->watch}, $app;
$self->{modified} = 1;
$self->_manage while !$self->{finished} || $self->{running};
exit 0;
}
# "And so with two weeks left in the campaign, the question on everyone's
# mind is, who will be the president of Earth?
# Jack Johnson or bitter rival John Jackson.
# Two terrific candidates, Morbo?
# All humans are vermin in the eyes of Morbo!"
sub _manage {
my $self = shift;
# Discover files
my @files;
for my $watch (@{$self->watch}) {
if (-d $watch) {
my $home = Mojo::Home->new->parse($watch);
push @files, $home->rel_file($_) for @{$home->list_files};
}
elsif (-r $watch) { push @files, $watch }
}
# Check files
for my $file (@files) {
next unless $self->check_file($file);
say qq{File "$file" changed, restarting.} if $ENV{MORBO_VERBOSE};
kill 'TERM', $self->{running} if $self->{running};
$self->{modified} = 1;
}
# Housekeeping
$self->_reap;
delete $self->{running} if $self->{running} && !kill 0, $self->{running};
$self->_spawn if !$self->{running} && delete $self->{modified};
sleep 1;
}
sub _reap {
my $self = shift;
while ((my $pid = waitpid -1, WNOHANG) > 0) { delete $self->{running} }
}
# "Morbo cannot read his teleprompter.
# He forgot how you say that letter that looks like a man wearing a hat.
# It's a T. It goes 'tuh'.
# Hello, little man. I will destroy you!"
sub _spawn {
my $self = shift;
# Fork
my $manager = $$;
$ENV{MORBO_REV}++;
die "Can't fork: $!" unless defined(my $pid = fork);
# Manager
return $self->{running} = $pid if $pid;
# Worker
$SIG{CHLD} = 'DEFAULT';
$SIG{INT} = $SIG{TERM} = $SIG{QUIT} = sub { $self->{finished} = 1 };
my $daemon = Mojo::Server::Daemon->new;
$daemon->load_app($self->watch->[0]);
$daemon->silent(1) if $ENV{MORBO_REV} > 1;
$daemon->start;
my $loop = $daemon->ioloop;
$loop->recurring(
1 => sub { shift->stop if !kill(0, $manager) || $self->{finished} });
$loop->start;
exit 0;
}
1;
=head1 NAME
Mojo::Server::Morbo - DOOOOOOOOOOOOOOOOOOM!
=head1 SYNOPSIS
use Mojo::Server::Morbo;
my $morbo = Mojo::Server::Morbo->new;
$morbo->run('./myapp.pl');
=head1 DESCRIPTION
L<Mojo::Server::Morbo> is a full featured self-restart capable non-blocking
I/O HTTP 1.1 and WebSocket server built around the very well tested and
reliable L<Mojo::Server::Daemon> with C<IPv6>, C<TLS> and C<libev> support.
To start applications with it you can use the L<morbo> script.
$ morbo myapp.pl
Server available at http://127.0.0.1:3000.
Optional modules L<EV>, L<IO::Socket::INET6> and L<IO::Socket::SSL> are
supported transparently and used if installed. Individual features can also be
disabled with the C<MOJO_NO_IPV6> and C<MOJO_NO_TLS> environment variables.
See L<Mojolicious::Guides::Cookbook> for more.
=head1 ATTRIBUTES
L<Mojo::Server::Morbo> implements the following attributes.
=head2 C<watch>
my $watch = $morbo->watch;
$morbo = $morbo->watch(['/home/sri/myapp']);
Files and directories to watch for changes, defaults to the application script
as well as the C<lib> and C<templates> directories in the current working
directory.
=head1 METHODS
L<Mojo::Server::Morbo> inherits all methods from L<Mojo::Base> and implements
the following new ones.
=head2 C<check_file>
my $success = $morbo->check_file('/home/sri/lib/MyApp.pm');
Check if file has been modified since last check.
=head2 C<run>
$morbo->run('script/myapp');
Run server for application.
=head1 SEE ALSO
L<Mojolicious>, L<Mojolicious::Guides>, L<http://mojolicio.us>.
=cut
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