1 package MooseX::Daemonize;
2 use strict; # because Kwalitee is pedantic
5 use MooseX::Daemonize::Types;
10 MooseX::Daemonize::Core
11 MooseX::Daemonize::WithSignalHandling
12 MooseX::Daemonize::WithPidFile
22 ( my $name = lc $_[0]->meta->name ) =~ s/::/_/g;
28 isa => 'Path::Class::Dir',
33 default => sub { Path::Class::Dir->new('var', 'run') },
37 isa => 'Path::Class::Dir',
42 default => sub { Path::Class::Dir->new('/') },
46 metaclass => 'Getopt',
61 my $file = $self->pidbase . '/' . $self->progname . '.pid';
62 confess "Cannot write to $file" unless (-e $file ? -w $file : -w $self->pidbase);
63 MooseX::Daemonize::PidFile->new( file => $file );
69 confess "instance already running" if $self->pidfile->running;
71 $self->daemonize unless $self->foreground;
73 return unless $self->is_daemon;
75 $self->pidfile->pid($$);
77 # Avoid 'stdin reopened for output' warning with newer perls
79 open( NULL, '/dev/null' );
86 $self->pidfile->write;
91 # Make _kill *really* private
95 my ( $self, %args ) = @_;
96 my $pid = $self->pidfile->pid;
97 $self->$_kill($pid) unless $self->foreground();
98 $self->pidfile->remove;
99 return 1 if $args{no_exit};
105 $self->stop( no_exit => 1 );
110 my ($self, $signal) = @_;
111 return $self->handle_sigint if $signal eq 'INT';
112 return $self->handle_sighup if $signal eq 'HUP';
115 sub handle_sigint { $_[0]->stop; }
116 sub handle_sighup { $_[0]->restart; }
119 my ( $self, $pid ) = @_;
121 unless ( CORE::kill 0 => $pid ) {
123 # warn "$pid already appears dead.";
129 # warn "$pid is us! Can't commit suicide.";
133 my $timeout = $self->stop_timeout;
135 # kill 0 => $pid returns 0 if the process is dead
136 # $!{EPERM} could also be true if we cant kill it (permission error)
138 # Try SIGINT ... 2s ... SIGTERM ... 2s ... SIGKILL ... 3s ... UNDEAD!
139 for ( [ 2, $timeout ], [15, $timeout], [9, $timeout * 1.5] ) {
140 my ($signal, $timeout) = @$_;
141 $timeout = int $timeout;
143 CORE::kill($signal, $pid);
145 last unless CORE::kill 0 => $pid or $!{EPERM};
149 last unless CORE::kill 0 => $pid or $!{EPERM};
154 return unless ( CORE::kill 0 => $pid or $!{EPERM} );
156 # IF it is still running
157 Carp::carp "$pid doesn't seem to want to die."; # AHH EVIL DEAD!
165 MooseX::Daemonize - provides a Role that daemonizes your Moose based
170 This document describes MooseX::Daemonize version 0.04
176 with qw(MooseX::Daemonize);
179 my ( $self, $file ) = @_;
180 open( FILE, ">$file" ) || die;
186 # then in the main package ...
188 my $daemon = FileMaker->new();
190 $daemon->create_file($file);
195 Often you want to write a persistant daemon that has a pid file, and responds
196 appropriately to Signals. This module helps provide the basic infrastructure
203 =item progname Path::Class::Dir | Str
205 The name of our daemon, defaults to $self->meta->name =~ s/::/_/;
207 =item pidbase Path::Class::Dir | Str
209 The base for our bid, defaults to /var/run/$progname
211 =item pidfile MooseX::Daemonize::PidFile | Str
213 The file we store our PID in, defaults to /var/run/$progname
215 =item foreground Bool
217 If true, the process won't background. Useful for debugging. This option can
218 be set via Getopt's -f.
222 If true, the process is the backgrounded process. This is useful for example
223 in an after 'start' => sub { } block
227 Number of seconds to wait for the process to stop, before trying harder to kill
228 it. Defaults to 2 seconds
238 Setup a pidfile, fork, then setup the signal handlers.
242 Stop the process matching the pidfile, and unlinks the pidfile.
253 Calls C<Proc::Daemon::Init> to daemonize this process.
255 =item setup_signals()
257 Setup the signal handlers, by default it only sets up handlers for SIGINT and SIGHUP
259 =item handle_sigint()
261 Handle a INT signal, by default calls C<$self->stop()>
263 =item handle_sighup()
265 Handle a HUP signal. By default calls C<$self->restart()>
269 The C<meta()> method from L<Class::MOP::Class>
275 =for author to fill in:
276 A list of all the other modules that this module relies upon,
277 including any restrictions on versions, and an indication whether
278 the module is part of the standard Perl distribution, part of the
279 module's distribution, or must be installed separately. ]
281 Obviously L<Moose>, and L<Proc::Daemon>
283 =head1 INCOMPATIBILITIES
285 =for author to fill in:
286 A list of any modules that this module cannot be used in conjunction
287 with. This may be due to name conflicts in the interface, or
288 competition for system or program resources, or due to internal
289 limitations of Perl (for example, many modules that use source code
290 filters are mutually incompatible).
295 =head1 BUGS AND LIMITATIONS
297 =for author to fill in:
298 A list of known problems with the module, together with some
299 indication Whether they are likely to be fixed in an upcoming
300 release. Also a list of restrictions on the features the module
301 does provide: data types that cannot be handled, performance issues
302 and the circumstances in which they may arise, practical
303 limitations on the size of data sets, special cases that are not
306 No bugs have been reported.
308 Please report any bugs or feature requests to
309 C<bug-acme-dahut-call@rt.cpan.org>, or through the web interface at
310 L<http://rt.cpan.org>.
314 L<Proc::Daemon>, L<Daemon::Generic>, L<MooseX::Getopt>
318 Chris Prather C<< <perigrin@cpan.org> >>
322 Mike Boyko, Matt S. Trout, Stevan Little, Brandon Black, Ash Berlin and the
325 Some bug fixes sponsored by Takkle Inc.
327 =head1 LICENCE AND COPYRIGHT
329 Copyright (c) 2007, Chris Prather C<< <perigrin@cpan.org> >>. All rights
332 This module is free software; you can redistribute it and/or
333 modify it under the same terms as Perl itself. See L<perlartistic>.
336 =head1 DISCLAIMER OF WARRANTY
338 BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
339 FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
340 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
341 PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
342 EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
343 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
344 ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH
345 YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
346 NECESSARY SERVICING, REPAIR, OR CORRECTION.
348 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
349 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
350 REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE
351 LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL,
352 OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE
353 THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
354 RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
355 FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
356 SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF