our $VERSION = 0.05;
-with qw[
- MooseX::Daemonize::WithPidFile
- MooseX::Getopt
-];
+with 'MooseX::Daemonize::WithPidFile',
+ 'MooseX::Getopt';
has progname => (
- isa => 'Str',
- is => 'ro',
- lazy => 1,
- required => 1,
- default => sub {
+ metaclass => 'Getopt',
+ isa => 'Str',
+ is => 'ro',
+ lazy => 1,
+ required => 1,
+ default => sub {
( my $name = lc $_[0]->meta->name ) =~ s/::/_/g;
return $name;
},
);
has pidbase => (
- isa => 'Path::Class::Dir',
- is => 'ro',
- coerce => 1,
- required => 1,
- lazy => 1,
- default => sub { Path::Class::Dir->new('var', 'run') },
+ metaclass => 'Getopt',
+ isa => 'Path::Class::Dir',
+ is => 'ro',
+ coerce => 1,
+ required => 1,
+ lazy => 1,
+ default => sub { Path::Class::Dir->new('var', 'run') },
);
has basedir => (
- isa => 'Path::Class::Dir',
- is => 'ro',
- coerce => 1,
- required => 1,
- lazy => 1,
- default => sub { Path::Class::Dir->new('/') },
+ metaclass => 'Getopt',
+ isa => 'Path::Class::Dir',
+ is => 'ro',
+ coerce => 1,
+ required => 1,
+ lazy => 1,
+ default => sub { Path::Class::Dir->new('/') },
);
has foreground => (
);
has stop_timeout => (
- isa => 'Int',
- is => 'rw',
- default => sub { 2 }
+ metaclass => 'Getopt',
+ isa => 'Int',
+ is => 'rw',
+ default => sub { 2 }
);
+# methods ...
+
+## PID file related stuff ...
+
sub init_pidfile {
my $self = shift;
my $file = $self->pidbase . '/' . $self->progname . '.pid';
MooseX::Daemonize::Pid::File->new( file => $file );
}
+# backwards compat,
+sub check { (shift)->pidfile->is_running }
+sub save_pid { (shift)->pidfile->write }
+sub remove_pid { (shift)->pidfile->remove }
+sub get_pid { (shift)->pidfile->pid }
+
+## signal handling ...
+
+sub setup_signals {
+ my $self = shift;
+ $SIG{'INT'} = sub { $self->handle_sigint };
+ $SIG{'HUP'} = sub { $self->handle_sighup };
+}
+
+sub handle_sigint { $_[0]->stop; }
+sub handle_sighup { $_[0]->restart; }
+
+## daemon control methods ...
+
sub start {
my ($self) = @_;
return unless $self->is_daemon;
- $self->pidfile->pid($$);
-
- # Avoid 'stdin reopened for output'
- # warning with newer perls
- open( NULL, '/dev/null' );
- <NULL> if (0);
+ $self->pidfile->pid($$);
# Change to basedir
chdir $self->basedir;
return $$;
}
+sub restart {
+ my ($self) = @_;
+ $self->stop( no_exit => 1 );
+ $self->start();
+}
+
# Make _kill *really* private
my $_kill;
exit;
}
-sub restart {
- my ($self) = @_;
- $self->stop( no_exit => 1 );
- $self->start();
-}
-
-sub setup_signals {
- my $self = shift;
- $SIG{'INT'} = sub { $self->handle_sigint };
- $SIG{'HUP'} = sub { $self->handle_sighup };
-}
-
-sub handle_sigint { $_[0]->stop; }
-sub handle_sighup { $_[0]->restart; }
-
$_kill = sub {
my ( $self, $pid ) = @_;
return unless $pid;
=head1 VERSION
-This document describes MooseX::Daemonize version 0.04
+This document describes MooseX::Daemonize version 0.05
=head1 SYNOPSIS
- package FileMaker;
+ package My::Daemon;
use Moose;
+
with qw(MooseX::Daemonize);
+
+ # ... define your class ....
+
+ after start => sub {
+ my $self = shift;
+ return unless $self->is_daemon;
+ # your daemon code here ...
+ };
- sub create_file {
- my ( $self, $file ) = @_;
- open( FILE, ">$file" ) || die;
- close(FILE);
- }
-
- no Moose;
-
- # then in the main package ...
+ # then in your script ...
+
+ my $daemon = My::Daemon->new_with_options();
- my $daemon = FileMaker->new();
- $daemon->start();
- $daemon->create_file($file);
- $daemon->stop();
+ my ($command) = @{$daemon->extra_argv}
+ defined $command || die "No command specified";
+
+ $daemon->start() if $command eq 'start';
+ $daemon->stop() if $command eq 'stop';
=head1 DESCRIPTION
Often you want to write a persistant daemon that has a pid file, and responds
-appropriately to Signals. This module helps provide the basic infrastructure
-to do that.
+appropriately to Signals. This module provides a set of basic roles as an
+infrastructure to do that.
=head1 ATTRIBUTES
+This list includes attributes brought in from other roles as well
+we include them here for ease of documentation. All of these attributes
+are settable though L<MooseX::Getopt>'s command line handling, with the
+exception of C<is_daemon>.
+
=over
-=item progname Path::Class::Dir | Str
+=item I<progname Path::Class::Dir | Str>
-The name of our daemon, defaults to $self->meta->name =~ s/::/_/;
+The name of our daemon, defaults to C<$package_name =~ s/::/_/>;
-=item pidbase Path::Class::Dir | Str
+=item I<pidbase Path::Class::Dir | Str>
-The base for our bid, defaults to /var/run/$progname
+The base for our bid, defaults to C</var/run/$progname>
-=item pidfile MooseX::Daemonize::Pid::File | Str
+=item I<pidfile MooseX::Daemonize::Pid::File | Str>
-The file we store our PID in, defaults to /var/run/$progname
+The file we store our PID in, defaults to C</var/run/$progname>
-=item foreground Bool
+=item I<foreground Bool>
If true, the process won't background. Useful for debugging. This option can
be set via Getopt's -f.
-=item is_daemon Bool
+=item I<is_daemon Bool>
+
+If true, the process is the backgrounded daemon process, if false it is the
+parent process. This is useful for example in an C<after 'start' => sub { }>
+block.
-If true, the process is the backgrounded process. This is useful for example
-in an after 'start' => sub { } block
+B<NOTE:> This option is explicitly B<not> available through L<MooseX::Getopt>.
-=item stop_timeout
+=item I<stop_timeout>
Number of seconds to wait for the process to stop, before trying harder to kill
-it. Defaults to 2 seconds
+it. Defaults to 2 seconds.
=back
=head1 METHODS
-=over
+=head2 Daemon Control Methods
+
+These methods can be used to control the daemon behavior. Every effort
+has been made to have these methods DWIM (Do What I Mean), so that you
+can focus on just writing the code for your daemon.
-=item start()
+Extending these methods is best done with the L<Moose> method modifiers,
+such as C<before>, C<after> and C<around>.
+
+=over 4
+
+=item B<start>
Setup a pidfile, fork, then setup the signal handlers.
-=item stop()
+=item B<stop>
Stop the process matching the pidfile, and unlinks the pidfile.
-=item restart()
+=item B<restart>
-Litterally
+Literally this is:
$self->stop();
$self->start();
-=item daemonize()
+=back
+
+=head2 Pidfile Handling Methods
+
+=over 4
+
+=item B<init_pidfile>
+
+This method will create a L<MooseX::Daemonize::Pid::File> object and tell
+it to store the PID in the file C<$pidbase/$progname.pid>.
+
+=item B<check>
+
+This checks to see if the daemon process is currently running by checking
+the pidfile.
-Calls daemonize from MooseX::Daemonize::Core.
+=item B<get_pid>
-=item setup_signals()
+Returns the PID of the daemon process.
-Setup the signal handlers, by default it only sets up handlers for SIGINT and SIGHUP
+=item B<save_pid>
-=item handle_sigint()
+Write the pidfile.
+
+=item B<remove_pid>
+
+Removes the pidfile.
+
+=back
+
+=head2 Signal Handling Methods
+
+=over 4
+
+=item B<setup_signals>
+
+Setup the signal handlers, by default it only sets up handlers for SIGINT and
+SIGHUP. If you wish to add more signals just use the C<after> method modifier
+and add them.
+
+=item B<handle_sigint>
Handle a INT signal, by default calls C<$self->stop()>
-=item handle_sighup()
+=item B<handle_sighup>
Handle a HUP signal. By default calls C<$self->restart()>
+=back
+
+=head2 Introspection
+
+=over 4
+
=item meta()
The C<meta()> method from L<Class::MOP::Class>
=head1 DEPENDENCIES
-=for author to fill in:
- A list of all the other modules that this module relies upon,
- including any restrictions on versions, and an indication whether
- the module is part of the standard Perl distribution, part of the
- module's distribution, or must be installed separately. ]
-
-Obviously L<Moose>, and L<Proc::Daemon>
+L<Moose>, L<MooseX::Getopt>, L<MooseX::Types::Path::Class> and L<POSIX>
=head1 INCOMPATIBILITIES
-=for author to fill in:
- A list of any modules that this module cannot be used in conjunction
- with. This may be due to name conflicts in the interface, or
- competition for system or program resources, or due to internal
- limitations of Perl (for example, many modules that use source code
- filters are mutually incompatible).
-
-None reported.
-
+None reported. Although obviously this will not work on Windows.
=head1 BUGS AND LIMITATIONS
-=for author to fill in:
- A list of known problems with the module, together with some
- indication Whether they are likely to be fixed in an upcoming
- release. Also a list of restrictions on the features the module
- does provide: data types that cannot be handled, performance issues
- and the circumstances in which they may arise, practical
- limitations on the size of data sets, special cases that are not
- (yet) handled, etc.
-
No bugs have been reported.
Please report any bugs or feature requests to
=head1 SEE ALSO
-L<Proc::Daemon>, L<Daemon::Generic>, L<MooseX::Getopt>
+L<Proc::Daemon>, L<Daemon::Generic>
=head1 AUTHOR
This module is free software; you can redistribute it and/or
modify it under the same terms as Perl itself. See L<perlartistic>.
-
=head1 DISCLAIMER OF WARRANTY
BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
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