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|
use strict;
use warnings;
package MooseX::Daemonize::Pid::File;
# ABSTRACT: PID file management for MooseX::Daemonize
our $VERSION = '0.22';
use Moose;
use Moose::Util::TypeConstraints qw(coerce from via);
use MooseX::Types::Path::Class;
use MooseX::Getopt::OptionTypeMap;
use namespace::autoclean;
# NOTE:
# set up some basic coercions
# that will come in handy
# - SL
coerce 'MooseX::Daemonize::Pid::File'
=> from 'Str'
=> via { MooseX::Daemonize::Pid::File->new( file => $_ ) }
=> from 'ArrayRef'
=> via { MooseX::Daemonize::Pid::File->new( file => $_ ) }
=> from 'Path::Class::File'
=> via { MooseX::Daemonize::Pid::File->new( file => $_ ) };
# NOTE:
# make sure this class plays
# well with MooseX::Getopt
# - SL
MooseX::Getopt::OptionTypeMap->add_option_type_to_map(
'MooseX::Daemonize::Pid::File' => '=s',
);
extends 'MooseX::Daemonize::Pid';
has '+pid' => (
default => sub {
my $self = shift;
$self->does_file_exist
? $self->file->slurp(chomp => 1)
: $$
}
);
has 'file' => (
is => 'ro',
isa => 'Path::Class::File',
coerce => 1,
required => 1,
handles => [ 'remove' ]
);
sub does_file_exist { -s (shift)->file }
sub write {
my $self = shift;
my $fh = $self->file->openw;
$fh->print($self->pid . "\n");
$fh->close;
}
override 'is_running' => sub {
return 0 unless (shift)->does_file_exist;
super();
};
__PACKAGE__->meta->make_immutable;
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
MooseX::Daemonize::Pid::File - PID file management for MooseX::Daemonize
=head1 VERSION
version 0.22
=head1 DESCRIPTION
This object extends L<MooseX::Daemonize::Pid> to add persistence in a Pidfile.
This class sets up some basic coercion routines for itself so that it can
be created from a I<Str> (a file name), I<ArrayRef> (an array of path components
for a filename) or a I<Path::Class::File> object.
This class registers it's type with L<MooseX::Getopt> as well, and is expected
to be passed on the command line as a string (which will then go through the
coercion routines mentioned above).
=head1 ATTRIBUTES
=over
=item I<pid Int>
This is inherited from L<MooseX:Daemonize::Pid> and extended here to
get it's default value from the Pidfile (if available).
=item I<file Path::Class::File | Str>
=back
=head1 METHODS
=over
=item B<clear_pid>
=item B<has_pid>
Both of these methods are inherited from L<MooseX:Daemonize::Pid> see that
module for more information.
=item B<remove>
This removes the Pidfile.
=item B<write>
This writes the Pidfile.
=item B<does_file_exist>
This checks if the Pidfile exists.
=item B<is_running>
This checks if the Pidfile exists, if it does it checks to see if the process
is running, if the Pidfile doesn't exist, it returns false.
=item meta()
The C<meta()> method from L<Class::MOP::Class>
=back
=head1 SUPPORT
Bugs may be submitted through L<the RT bug tracker|https://rt.cpan.org/Public/Dist/Display.html?Name=MooseX-Daemonize>
(or L<bug-MooseX-Daemonize@rt.cpan.org|mailto:bug-MooseX-Daemonize@rt.cpan.org>).
There is also a mailing list available for users of this distribution, at
L<http://lists.perl.org/list/moose.html>.
There is also an irc channel available for users of this distribution, at
L<C<#moose> on C<irc.perl.org>|irc://irc.perl.org/#moose>.
=head1 AUTHORS
=over 4
=item *
Stevan Little <stevan.little@iinteractive.com>
=item *
Chris Prather <chris@prather.org>
=back
=head1 COPYRIGHT AND LICENCE
This software is copyright (c) 2007 by Chris Prather.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
|
