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1 | package Catalyst::Engine::HTTP::Restarter; |
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2 | use Moose; |
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3 | use Moose::Util qw/find_meta/; |
4 | use namespace::clean -except => 'meta'; |
5 | |
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6 | extends 'Catalyst::Engine::HTTP'; |
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7 | |
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8 | use Catalyst::Engine::HTTP::Restarter::Watcher; |
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9 | |
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10 | around run => sub { |
11 | my $orig = shift; |
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12 | my ( $self, $class, $port, $host, $options ) = @_; |
13 | |
14 | $options ||= {}; |
15 | |
16 | # Setup restarter |
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17 | unless ( my $restarter = fork ) { |
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18 | |
19 | # Prepare |
20 | close STDIN; |
21 | close STDOUT; |
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22 | |
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23 | $self->_make_components_mutable($class); |
24 | |
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25 | my $watcher = Catalyst::Engine::HTTP::Restarter::Watcher->new( |
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26 | directory => ( |
27 | $options->{restart_directory} || |
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28 | File::Spec->catdir( $FindBin::Bin, '..' ) |
29 | ), |
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30 | follow_symlinks => $options->{follow_symlinks}, |
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31 | regex => $options->{restart_regex}, |
32 | delay => $options->{restart_delay}, |
33 | ); |
34 | |
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35 | $host ||= '127.0.0.1'; |
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36 | while (1) { |
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37 | |
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38 | # poll for changed files |
39 | my @changed_files = $watcher->watch(); |
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40 | |
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41 | # check if our parent process has died |
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42 | exit if $^O ne 'MSWin32' and getppid == 1; |
43 | |
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44 | # Restart if any files have changed |
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45 | if (@changed_files) { |
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46 | my $files = join ', ', @changed_files; |
47 | print STDERR qq/File(s) "$files" modified, restarting\n\n/; |
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48 | |
49 | require IO::Socket::INET; |
50 | require HTTP::Headers; |
51 | require HTTP::Request; |
52 | |
53 | my $client = IO::Socket::INET->new( |
54 | PeerAddr => $host, |
55 | PeerPort => $port |
56 | ) |
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57 | or die "Can't create client socket (is server running?): ", |
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58 | $!; |
59 | |
60 | # build the Kill request |
61 | my $req = |
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62 | HTTP::Request->new( 'RESTART', '/', |
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63 | HTTP::Headers->new( 'Connection' => 'close' ) ); |
64 | $req->protocol('HTTP/1.0'); |
65 | |
66 | $client->send( $req->as_string ) |
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67 | or die "Can't send restart instruction: ", $!; |
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68 | $client->close(); |
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69 | exit; |
70 | } |
71 | } |
72 | } |
73 | |
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74 | return $self->$orig( $class, $port, $host, $options ); |
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75 | }; |
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76 | |
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77 | # Naive way of trying to avoid Moose blowing up when you re-require components |
78 | # which have been made immutable. |
79 | sub _make_components_mutable { |
80 | my ($self, $class) = @_; |
81 | |
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82 | my @metas = map { find_meta($_) } ($class, map { blessed($_) } values %{ $class->components }); |
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83 | |
84 | foreach my $meta (@metas) { |
85 | $meta->make_mutable if $meta->is_immutable; |
86 | } |
87 | } |
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88 | |
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89 | 1; |
90 | __END__ |
91 | |
92 | =head1 NAME |
93 | |
94 | Catalyst::Engine::HTTP::Restarter - Catalyst Auto-Restarting HTTP Engine |
95 | |
96 | =head1 SYNOPSIS |
97 | |
98 | script/myapp_server.pl -restart |
99 | |
100 | =head1 DESCRIPTION |
101 | |
102 | The Restarter engine will monitor files in your application for changes |
103 | and restart the server when any changes are detected. |
104 | |
105 | =head1 METHODS |
106 | |
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107 | =head2 run |
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108 | |
109 | =head1 SEE ALSO |
110 | |
111 | L<Catalyst>, L<Catalyst::Engine::HTTP>, L<Catalyst::Engine::CGI>, |
112 | L<Catalyst::Engine>. |
113 | |
114 | =head1 AUTHORS |
115 | |
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116 | Catalyst Contributors, see Catalyst.pm |
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117 | |
118 | =head1 THANKS |
119 | |
120 | Many parts are ripped out of C<HTTP::Server::Simple> by Jesse Vincent. |
121 | |
122 | =head1 COPYRIGHT |
123 | |
124 | This program is free software, you can redistribute it and/or modify it under |
125 | the same terms as Perl itself. |
126 | |
127 | =cut |